Docs: Update for release FEX-2508.1

unittests: add blake3 test
this provokes RA spilling and hit an assertion fail on main. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
2026-10-12 01:00:38 +02:00 · 2025-08-05 19:51:54 -07:00 · 2025-08-05 19:50:53 -07:00 · 2025-08-05 19:50:48 -07:00 · 2025-08-05 19:50:43 -07:00
623 changed files with 58436 additions and 86064 deletions
@@ -7,6 +7,3 @@ FEXCore/Source/Interface/Core/X86Tables/*
 # Inline headers with list-like content that can't be processed individually
 Source/Tools/LinuxEmulation/LinuxSyscalls/x*/SyscallsNames.inl
 Source/Tools/LinuxEmulation/LinuxSyscalls/x*/Ioctl/*.inl
-
-# Include files in unittests
-unittests/*ASM/Includes/*.inc
@@ -20,5 +20,3 @@
 # Whole-tree reformat with clang-format-19
 5267cde60e7642852d18f20ae8568643bb5293d5

-# Minor reformat with clang-format-19
-9fdd96af61c969cb5732471223f00eda64b7a069
@@ -13,7 +13,6 @@ env:
  BUILD_TYPE: Release
  CC: clang
  CXX: clang++
-  FEX_PORTABLE: 1

 jobs:
  build_plus_test:
@@ -34,6 +33,7 @@ jobs:
        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV

    - name: Update RootFS cache
      # Use a bash shell so we can use the same syntax for environment variable
@@ -136,9 +136,6 @@ jobs:
    - name: FEXLinuxTests
      working-directory: ${{runner.workspace}}/build
      shell: bash
-      env:
-        # These tests require non-portable install due to thunks.
-        FEX_PORTABLE: 0
      run: cmake --build . --config $BUILD_TYPE --target fex_linux_tests_all

    - name: FEXLinuxTests Results move
@@ -20,7 +20,6 @@ env:
  BUILD_TYPE: Release
  CC: clang
  CXX: clang++
-  FEX_PORTABLE: 1

 jobs:
  glibc_fault_test:
@@ -41,6 +40,7 @@ jobs:
        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV

    - name: Update RootFS cache
      # Use a bash shell so we can use the same syntax for environment variable
@@ -13,7 +13,6 @@ env:
  BUILD_TYPE: Release
  CC: clang
  CXX: clang++
-  FEX_PORTABLE: 1

 jobs:
  hostrunner_tests:
@@ -34,6 +33,7 @@ jobs:
        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV

    - name: Update RootFS cache
      # Use a bash shell so we can use the same syntax for environment variable
@@ -33,6 +33,7 @@ jobs:
        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV

    - name: Update RootFS cache
      # Use a bash shell so we can use the same syntax for environment variable
@@ -48,6 +48,7 @@ jobs:
        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV

    - name: Update RootFS cache
      # Use a bash shell so we can use the same syntax for environment variable
@@ -77,7 +78,7 @@ jobs:
      # Note the current convention is to use the -S and -B options here to specify source
      # and build directories, but this is only available with CMake 3.13 and higher.
      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=$MINGW_TRIPLE -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True -DBUILD_TESTING=False -DCMAKE_INSTALL_PREFIX=${{runner.workspace}}/build/install
+      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=$MINGW_TRIPLE -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True -DBUILD_TESTS=False -DCMAKE_INSTALL_PREFIX=${{runner.workspace}}/build/install

    - name: Build
      working-directory: ${{runner.workspace}}/build
@@ -60,6 +60,7 @@ jobs:
          START_REV: ${{ github.event.pull_request.base.sha }}
          END_REV: ${{ github.event.pull_request.head.sha }}
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
+        # Using --diff_from_common_commit option available in clang-format-19
        run: |
          python ./External/code-format-helper/code-format-helper.py \
            --repo "FEX-emu/FEX" \
@@ -13,7 +13,6 @@ env:
  BUILD_TYPE: Release
  CC: clang
  CXX: clang++
-  FEX_PORTABLE: 1

 jobs:
  vixl_simulator:
@@ -35,6 +34,7 @@ jobs:
        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV

    - name: Update RootFS cache
      # Use a bash shell so we can use the same syntax for environment variable
@@ -46,12 +46,12 @@ jobs:
    - name: Configure CMake arm64ec
      shell: bash
      working-directory: ${{runner.workspace}}/build_arm64ec
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=arm64ec-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=False -DENABLE_JEMALLOC_GLIBC_ALLOC=False -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=False -DCMAKE_INSTALL_PREFIX=/usr
+      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=arm64ec-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=False -DENABLE_JEMALLOC_GLIBC_ALLOC=False -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTS=False -DCMAKE_INSTALL_PREFIX=/usr

    - name: Configure CMake wow64
      shell: bash
      working-directory: ${{runner.workspace}}/build_wow64
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=aarch64-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=False -DENABLE_JEMALLOC_GLIBC_ALLOC=False -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=False -DCMAKE_INSTALL_PREFIX=/usr
+      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=aarch64-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=False -DENABLE_JEMALLOC_GLIBC_ALLOC=False -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTS=False -DCMAKE_INSTALL_PREFIX=/usr

    - name: Build arm64ec
      working-directory: ${{runner.workspace}}/build_arm64ec
@@ -46,6 +46,3 @@
 [submodule "External/tracy"]
 	path = External/tracy
 	url = https://github.com/wolfpld/tracy
-[submodule "External/range-v3"]
-	path = External/range-v3
-	url = https://github.com/ericniebler/range-v3.git
@@ -4,6 +4,7 @@ project(FEX C CXX ASM)
 INCLUDE (CheckIncludeFiles)
 CHECK_INCLUDE_FILES ("gdb/jit-reader.h" HAVE_GDB_JIT_READER_H)

+option(BUILD_TESTS "Build unit tests to ensure sanity" TRUE)
 option(BUILD_FEX_LINUX_TESTS "Build FEXLinuxTests, requires x86 compiler" FALSE)
 option(BUILD_THUNKS "Build thunks" FALSE)
 option(BUILD_FEXCONFIG "Build FEXConfig" TRUE)
@@ -303,8 +304,7 @@ set (CMAKE_LINKER_FLAGS_RELEASE "${CMAKE_LINKER_FLAGS_RELEASE} -fomit-frame-poin

 include_directories(External/robin-map/include/)

-include(CTest)
-if (BUILD_TESTING OR ENABLE_VIXL_DISASSEMBLER OR ENABLE_VIXL_SIMULATOR)
+if (BUILD_TESTS OR ENABLE_VIXL_DISASSEMBLER OR ENABLE_VIXL_SIMULATOR)
  add_subdirectory(External/vixl/)
  include_directories(SYSTEM External/vixl/src/)
 endif()
@@ -319,7 +319,7 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
 endif()

 find_package(PkgConfig REQUIRED)
-find_package(Python 3.9 REQUIRED COMPONENTS Interpreter)
+find_package(Python 3.0 REQUIRED COMPONENTS Interpreter)

 set(BUILD_SHARED_LIBS OFF)

@@ -335,7 +335,7 @@ endif()
 add_definitions(-Wno-trigraphs)
 add_definitions(-DGLOBAL_DATA_DIRECTORY="${DATA_DIRECTORY}/")

-if (BUILD_TESTING)
+if (BUILD_TESTS)
  find_package(Catch2 3 QUIET)
  if (NOT Catch2_FOUND)
    add_subdirectory(External/Catch2/)
@@ -345,9 +345,6 @@ if (BUILD_TESTING)
  endif()

  include(Catch)
-else ()
-  # Override any previously generated test list to avoid running stale test binaries
-  file(GENERATE OUTPUT CTestTestfile.cmake CONTENT "# No tests since BUILD_TESTING is disabled")
 endif()

 find_package(fmt QUIET)
@@ -357,12 +354,6 @@ if (NOT fmt_FOUND)
  add_subdirectory(External/fmt/)
 endif()

-find_package(range-v3 QUIET)
-if (NOT range-v3_FOUND)
-  add_subdirectory(External/range-v3/)
-  target_compile_definitions(range-v3 INTERFACE RANGES_DISABLE_DEPRECATED_WARNINGS)
-endif()
-
 add_subdirectory(External/tiny-json/)
 include_directories(External/tiny-json/)

@@ -458,8 +449,13 @@ endif()

 add_compile_options(-Wall)

-if (BUILD_TESTING)
+include(CTest)
+if (BUILD_TESTS)
  message(STATUS "Unit tests are enabled")
+  if (NOT BUILD_TESTING)
+    # CMake checks this variable before generating CTestTestfile.cmake
+    message(SEND_ERROR "Unit tests require BUILD_TESTING to be enabled")
+  endif()

  set (TEST_JOB_COUNT "" CACHE STRING "Override number of parallel jobs to use while running tests")
  if (TEST_JOB_COUNT)
@@ -490,11 +486,10 @@ file(GLOB CONFIG_SOURCES CONFIGURE_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/Data/*.js
 # Any application configuration json file gets installed
 foreach(CONFIG_SRC ${CONFIG_SOURCES})
  install(FILES ${CONFIG_SRC}
-    DESTINATION ${DATA_DIRECTORY}/
-    COMPONENT Runtime)
+    DESTINATION ${DATA_DIRECTORY}/)
 endforeach()

-if (BUILD_TESTING)
+if (BUILD_TESTS)
  add_subdirectory(unittests/)
 endif()

@@ -555,7 +550,6 @@ if (BUILD_THUNKS)
    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest
    )"
    DEPENDS guest-libs
-    COMPONENT Runtime
  )

  install(
@@ -565,7 +559,6 @@ if (BUILD_THUNKS)
    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest_32
    )"
    DEPENDS guest-libs-32
-    COMPONENT Runtime
  )

  add_custom_target(uninstall_guest-libs
@@ -607,3 +600,46 @@ if (OVERRIDE_VERSION STREQUAL "detect")
 else()
  set(GIT_DESCRIBE_STRING "FEX-${OVERRIDE_VERSION}")
 endif()
+
+# Parse the version here
+# Change something like `FEX-2106.1-76-<hash>` in to a list
+string(REPLACE "-" ";" DESCRIBE_LIST ${GIT_DESCRIBE_STRING})
+
+# Extract the `2106.1` element
+list(GET DESCRIBE_LIST 1 DESCRIBE_LIST)
+
+# Change `2106.1` in to a list
+string(REPLACE "." ";" DESCRIBE_LIST ${DESCRIBE_LIST})
+
+# Calculate list size
+list(LENGTH DESCRIBE_LIST LIST_SIZE)
+
+# Pull out the major version
+list(GET DESCRIBE_LIST 0 FEX_VERSION_MAJOR)
+
+# Minor version only exists if there is a .1 at the end
+# eg: 2106 versus 2106.1
+if (LIST_SIZE GREATER 1)
+  list(GET DESCRIBE_LIST 1 FEX_VERSION_MINOR)
+endif()
+
+# Package creation
+set (CPACK_GENERATOR "DEB")
+set (CPACK_PACKAGE_NAME fex-emu)
+set (CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${GIT_DESCRIBE_STRING}_${CMAKE_SYSTEM_PROCESSOR}")
+set (CPACK_PACKAGE_CONTACT "FEX-Emu Maintainers <team@fex-emu.com>")
+set (CPACK_PACKAGE_VERSION_MAJOR "${FEX_VERSION_MAJOR}")
+set (CPACK_PACKAGE_VERSION_MINOR "${FEX_VERSION_MINOR}")
+set (CPACK_PACKAGE_VERSION_PATCH "${FEX_VERSION_PATCH}")
+set (CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/Data/CMake/CPack/Description.txt")
+
+# Debian defines
+set (CPACK_DEBIAN_PACKAGE_DEPENDS "libc6, libstdc++6, libepoxy0, libsdl2-2.0-0, libegl1, libx11-6, squashfuse")
+set (CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA
+  "${CMAKE_CURRENT_SOURCE_DIR}/Data/CMake/CPack/postinst;${CMAKE_CURRENT_SOURCE_DIR}/Data/CMake/CPack/prerm;${CMAKE_CURRENT_SOURCE_DIR}/Data/CMake/CPack/triggers")
+if (CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
+  # binfmt_misc conflicts with qemu-user-static
+  # We also only install binfmt_misc on aarch64 hosts
+  set (CPACK_DEBIAN_PACKAGE_CONFLICTS "${CPACK_DEBIAN_PACKAGE_CONFLICTS}, qemu-user-static")
+endif()
+include (CPack)
@@ -174,7 +174,7 @@ public:
  // Logical immediate
  void and_(ARMEmitter::Size s, ARMEmitter::Register rd, ARMEmitter::Register rn, uint64_t Imm) {
    uint32_t n, immr, imms;
-    const auto IsImm = IsImmLogical(Imm, RegSizeInBits(s), &n, &imms, &immr);
+    [[maybe_unused]] const auto IsImm = IsImmLogical(Imm, RegSizeInBits(s), &n, &imms, &immr);
    LOGMAN_THROW_A_FMT(IsImm, "Couldn't encode immediate to logical op");
    and_(s, rd, rn, n, immr, imms);
  }
@@ -185,7 +185,7 @@ public:

  void ands(ARMEmitter::Size s, ARMEmitter::Register rd, ARMEmitter::Register rn, uint64_t Imm) {
    uint32_t n, immr, imms;
-    const auto IsImm = IsImmLogical(Imm, RegSizeInBits(s), &n, &imms, &immr);
+    [[maybe_unused]] const auto IsImm = IsImmLogical(Imm, RegSizeInBits(s), &n, &imms, &immr);
    LOGMAN_THROW_A_FMT(IsImm, "Couldn't encode immediate to logical op");
    ands(s, rd, rn, n, immr, imms);
  }
@@ -196,14 +196,14 @@ public:

  void orr(ARMEmitter::Size s, ARMEmitter::Register rd, ARMEmitter::Register rn, uint64_t Imm) {
    uint32_t n, immr, imms;
-    const auto IsImm = IsImmLogical(Imm, RegSizeInBits(s), &n, &imms, &immr);
+    [[maybe_unused]] const auto IsImm = IsImmLogical(Imm, RegSizeInBits(s), &n, &imms, &immr);
    LOGMAN_THROW_A_FMT(IsImm, "Couldn't encode immediate to logical op");
    orr(s, rd, rn, n, immr, imms);
  }

  void eor(ARMEmitter::Size s, ARMEmitter::Register rd, ARMEmitter::Register rn, uint64_t Imm) {
    uint32_t n, immr, imms;
-    const auto IsImm = IsImmLogical(Imm, RegSizeInBits(s), &n, &imms, &immr);
+    [[maybe_unused]] const auto IsImm = IsImmLogical(Imm, RegSizeInBits(s), &n, &imms, &immr);
    LOGMAN_THROW_A_FMT(IsImm, "Couldn't encode immediate to logical op");
    eor(s, rd, rn, n, immr, imms);
  }
@@ -333,7 +333,7 @@ public:
    bfi(s, rd, Reg::zr, lsb, width);
  }
  void bfxil(ARMEmitter::Size s, Register rd, Register rn, uint32_t lsb, uint32_t width) {
-    const auto reg_size_bits = RegSizeInBits(s);
+    [[maybe_unused]] const auto reg_size_bits = RegSizeInBits(s);
    const auto lsb_p_width = lsb + width;

    LOGMAN_THROW_A_FMT(width >= 1, "bfxil needs width >= 1");
@@ -977,7 +977,7 @@ private:
  }

  void xbfiz_helper(bool is_signed, ARMEmitter::Size s, Register rd, Register rn, uint32_t lsb, uint32_t width) {
-    const auto lsb_p_width = lsb + width;
+    [[maybe_unused]] const auto lsb_p_width = lsb + width;
    const auto reg_size_bits = RegSizeInBits(s);

    LOGMAN_THROW_A_FMT(lsb_p_width <= reg_size_bits, "lsb + width ({}) must be <= {}. lsb={}, width={}", lsb_p_width, reg_size_bits, lsb, width);
@@ -2244,7 +2244,8 @@ public:

  template<IsQOrDRegister T>
  void movi(SubRegSize size, T rd, uint64_t Imm, uint16_t Shift = 0) {
-    LOGMAN_THROW_A_FMT(size == SubRegSize::i8Bit || size == SubRegSize::i16Bit || size == SubRegSize::i32Bit || size == SubRegSize::i64Bit,
+    LOGMAN_THROW_A_FMT(size == SubRegSize::i8Bit || size == SubRegSize::i16Bit || size == SubRegSize::i32Bit ||
+                        size == SubRegSize::i64Bit,
                       "Unsupported movi size");

    uint32_t cmode;
@@ -12,7 +12,6 @@
 #include <CodeEmitter/Registers.h>

 #include <array>
-#include <bit>
 #include <cstdint>
 #include <utility>
 #include <type_traits>
@@ -1541,7 +1541,7 @@ public:
  void sqincp(SubRegSize size, XRegister rdn, PRegister pm) {
    SVEIncDecPredicateCountScalar(0, 1, 0b10, 0b00, size, rdn, pm);
  }
-  void sqincp(SubRegSize size, XRegister rdn, PRegister pm, WRegister wn) {
+  void sqincp(SubRegSize size, XRegister rdn, PRegister pm, [[maybe_unused]] WRegister wn) {
    LOGMAN_THROW_A_FMT(rdn.Idx() == wn.Idx(), "rdn and wn must be the same");
    SVEIncDecPredicateCountScalar(0, 1, 0b00, 0b00, size, rdn, pm);
  }
@@ -1554,7 +1554,7 @@ public:
  void sqdecp(SubRegSize size, XRegister rdn, PRegister pm) {
    SVEIncDecPredicateCountScalar(0, 1, 0b10, 0b10, size, rdn, pm);
  }
-  void sqdecp(SubRegSize size, XRegister rdn, PRegister pm, WRegister wn) {
+  void sqdecp(SubRegSize size, XRegister rdn, PRegister pm, [[maybe_unused]] WRegister wn) {
    LOGMAN_THROW_A_FMT(rdn.Idx() == wn.Idx(), "rdn and wn must be the same");
    SVEIncDecPredicateCountScalar(0, 1, 0b00, 0b10, size, rdn, pm);
  }
@@ -3296,7 +3296,7 @@ private:
    const auto log2_size_bytes = FEXCore::ilog2(size_bytes);

    // We can index up to 512-bit registers with dup
-    const auto max_index = (64U >> log2_size_bytes) - 1;
+    [[maybe_unused]] const auto max_index = (64U >> log2_size_bytes) - 1;
    LOGMAN_THROW_A_FMT(Index <= max_index, "dup index ({}) too large. Must be within [0, {}].", Index, max_index);

    // imm2:tsz make up a 7 bit wide field, with each increasing element size
@@ -3326,7 +3326,7 @@ private:

    uint32_t shift = 0;
    if (!is_uint8_imm) {
-      const bool is_uint16_imm = (imm >> 16) == 0;
+      [[maybe_unused]] const bool is_uint16_imm = (imm >> 16) == 0;

      LOGMAN_THROW_A_FMT(is_uint16_imm, "Immediate ({}) must be a 16-bit value within [256, 65280]", imm);
      LOGMAN_THROW_A_FMT((imm % 256) == 0, "Immediate ({}) must be a multiple of 256", imm);
@@ -4152,7 +4152,7 @@ private:

    const auto& op_data = mem_op.MetaType.ScalarVectorType;
    const bool is_scaled = op_data.scale != 0;
-    const auto msize_value = FEXCore::ToUnderlying(msize);
+    [[maybe_unused]] const auto msize_value = FEXCore::ToUnderlying(msize);

    LOGMAN_THROW_A_FMT(op_data.scale == 0 || op_data.scale == msize_value, "scale may only be 0 or {}", msize_value);

@@ -4266,7 +4266,7 @@ private:
    const auto msize_value = FEXCore::ToUnderlying(msize);
    const auto msize_bytes = 1U << msize_value;

-    const auto imm_limit = (32U << msize_value) - msize_bytes;
+    [[maybe_unused]] const auto imm_limit = (32U << msize_value) - msize_bytes;
    const auto imm = mem_op.MetaType.VectorImmType.Imm;
    const auto imm_to_encode = imm >> msize_value;

@@ -4332,8 +4332,8 @@ private:
    LOGMAN_THROW_A_FMT(pg <= PReg::p7, "Can only use p0-p7 as a governing predicate");
    LOGMAN_THROW_A_FMT((imm % num_regs) == 0, "Offset must be a multiple of {}", num_regs);

-    const auto min_offset = -8 * num_regs;
-    const auto max_offset = 7 * num_regs;
+    [[maybe_unused]] const auto min_offset = -8 * num_regs;
+    [[maybe_unused]] const auto max_offset = 7 * num_regs;
    LOGMAN_THROW_A_FMT(imm >= min_offset && imm <= max_offset,
                       "Invalid load/store offset ({}). Offset must be a multiple of {} and be within [{}, {}]", imm, num_regs, min_offset,
                       max_offset);
@@ -4440,8 +4440,8 @@ private:
    LOGMAN_THROW_A_FMT(pg <= PReg::p7, "Can only use p0-p7 as a governing predicate");

    const auto esize = static_cast<int>(16 << ssz);
-    const auto max_imm = (esize << 3) - esize;
-    const auto min_imm = -(max_imm + esize);
+    [[maybe_unused]] const auto max_imm = (esize << 3) - esize;
+    [[maybe_unused]] const auto min_imm = -(max_imm + esize);

    LOGMAN_THROW_A_FMT((imm % esize) == 0, "imm ({}) must be a multiple of {}", imm, esize);
    LOGMAN_THROW_A_FMT(imm >= min_imm && imm <= max_imm, "imm ({}) must be within [{}, {}]", imm, min_imm, max_imm);
@@ -4485,7 +4485,7 @@ private:
    const auto msize_value = FEXCore::ToUnderlying(msize);

    const auto data_size_bytes = 1U << msize_value;
-    const auto max_imm = (64U << msize_value) - data_size_bytes;
+    [[maybe_unused]] const auto max_imm = (64U << msize_value) - data_size_bytes;
    LOGMAN_THROW_A_FMT((imm % data_size_bytes) == 0 && imm <= max_imm, "imm must be a multiple of {} and be within [0, {}]",
                       data_size_bytes, max_imm);

@@ -4861,7 +4861,7 @@ private:
                       "64-bit variants may only use Zm between z0-z15");

    const auto Underlying = FEXCore::ToUnderlying(size);
-    const uint32_t IndexMax = (16 / (1U << Underlying)) - 1;
+    [[maybe_unused]] const uint32_t IndexMax = (16 / (1U << Underlying)) - 1;
    LOGMAN_THROW_A_FMT(index <= IndexMax, "Index must be within 0-{}", IndexMax);

    // Can be bit 20 or 19 depending on whether or not the element size is 64-bit.
@@ -5117,15 +5117,14 @@ private:
  requires (std::is_same_v<T, float> || std::is_same_v<T, double>)
  using FloatToEquivalentUInt = std::conditional_t<std::is_same_v<T, float>, uint32_t, uint64_t>;

-#if defined(ASSERTIONS_ENABLED) && ASSERTIONS_ENABLED
  // Determines if a floating-point value is capable of being converted
  // into an 8-bit immediate. See pseudocode definition of VFPExpandImm
  // in ARM A-profile reference manual for a general overview of how this was derived.
  template<typename T>
  requires (std::is_same_v<T, float> || std::is_same_v<T, double>)
-  [[nodiscard]]
+  [[nodiscard, maybe_unused]]
  static bool IsValidFPValueForImm8(T value) {
-    const uint64_t bits = std::bit_cast<FloatToEquivalentUInt<T>>(value);
+    const uint64_t bits = FEXCore::BitCast<FloatToEquivalentUInt<T>>(value);
    const uint64_t datasize_idx = FEXCore::ilog2(sizeof(T)) - 1;

    static constexpr std::array mantissa_masks {
@@ -5163,15 +5162,12 @@ private:

    return true;
  }
-#endif

 protected:
  static uint32_t FP32ToImm8(float value) {
-#if defined(ASSERTIONS_ENABLED) && ASSERTIONS_ENABLED
    LOGMAN_THROW_A_FMT(IsValidFPValueForImm8(value), "Value ({}) cannot be encoded into an 8-bit immediate", value);
-#endif

-    const auto bits = std::bit_cast<uint32_t>(value);
+    const auto bits = FEXCore::BitCast<uint32_t>(value);
    const auto sign = (bits & 0x80000000) >> 24;
    const auto expb2 = (bits & 0x20000000) >> 23;
    const auto b5_to_0 = (bits >> 19) & 0x3F;
@@ -5180,11 +5176,9 @@ protected:
  }

  static uint32_t FP64ToImm8(double value) {
-#if defined(ASSERTIONS_ENABLED) && ASSERTIONS_ENABLED
    LOGMAN_THROW_A_FMT(IsValidFPValueForImm8(value), "Value ({}) cannot be encoded into an 8-bit immediate", value);
-#endif

-    const auto bits = std::bit_cast<uint64_t>(value);
+    const auto bits = FEXCore::BitCast<uint64_t>(value);
    const auto sign = (bits & 0x80000000'00000000) >> 56;
    const auto expb2 = (bits & 0x20000000'00000000) >> 55;
    const auto b5_to_0 = (bits >> 48) & 0x3F;
@@ -5208,7 +5202,7 @@ private:
    uint32_t shift = 0;
    if (!is_int8_imm) {
      const int32_t imm16_limit = 32768;
-      const bool is_int16_imm = -imm16_limit <= imm && imm < imm16_limit;
+      [[maybe_unused]] const bool is_int16_imm = -imm16_limit <= imm && imm < imm16_limit;

      LOGMAN_THROW_A_FMT(is_int16_imm, "Immediate ({}) must be a 16-bit value within [-32768, 32512]", imm);
      LOGMAN_THROW_A_FMT((imm % 256) == 0, "Immediate ({}) must be a multiple of 256", imm);
@@ -30,7 +30,7 @@ public:
    const uint32_t SizeImm = FEXCore::ToUnderlying(size);
    const uint32_t IndexShift = SizeImm + 1;
    const uint32_t ElementSize = 1U << SizeImm;
-    const uint32_t MaxIndex = 128U / (ElementSize * 8);
+    [[maybe_unused]] const uint32_t MaxIndex = 128U / (ElementSize * 8);

    LOGMAN_THROW_A_FMT(Index < MaxIndex, "Index too large. Index={}, Max Index: {}", Index, MaxIndex);

@@ -1381,7 +1381,7 @@ private:
  void ASIMDScalarXIndexedElement(uint32_t U, ScalarRegSize size, uint32_t opcode, VRegister rm, VRegister rn, VRegister rd, uint32_t index) {
    LOGMAN_THROW_A_FMT(size != ScalarRegSize::i8Bit, "Scalar size must not be 8-bit");

-    const auto invalid_bound = 16U >> FEXCore::ToUnderlying(size);
+    [[maybe_unused]] const auto invalid_bound = 16U >> FEXCore::ToUnderlying(size);
    LOGMAN_THROW_A_FMT(index < invalid_bound, "Index ({}) must be within [0-{}]", index, invalid_bound - 1);

    uint32_t Instr = 0b0101'1111'0000'0000'0000'0000'0000'0000;
@@ -41,6 +41,7 @@ static bool IsImmLogical(uint64_t value, unsigned width, unsigned* n = nullptr,
  [[maybe_unused]] constexpr auto kDRegSize = 64;

  constexpr auto kWRegSize = 32;
+  constexpr auto kXRegSize = 64;

  LOGMAN_THROW_A_FMT((width == kBRegSize) || (width == kHRegSize) || (width == kSRegSize) || (width == kDRegSize), "Unexpected imm size");

@@ -128,8 +129,8 @@ static bool IsImmLogical(uint64_t value, unsigned width, unsigned* n = nullptr,
    // Compute the repeat distance d, and set up a bitmask covering the basic
    // unit of repetition (i.e. a word with the bottom d bits set). Also, in all
    // of these cases the N bit of the output will be zero.
-    clz_a = std::countl_zero(a);
-    int clz_c = std::countl_zero(c);
+    clz_a = CountLeadingZeros(a, kXRegSize);
+    int clz_c = CountLeadingZeros(c, kXRegSize);
    d = clz_a - clz_c;
    mask = ((UINT64_C(1) << d) - 1);
    out_n = 0;
@@ -150,7 +151,7 @@ static bool IsImmLogical(uint64_t value, unsigned width, unsigned* n = nullptr,
      // of set bits in our word, meaning that we have the trivial case of
      // d == 64 and only one 'repetition'. Set up all the same variables as in
      // the general case above, and set the N bit in the output.
-      clz_a = std::countl_zero(a);
+      clz_a = CountLeadingZeros(a, kXRegSize);
      d = 64;
      mask = ~UINT64_C(0);
      out_n = 1;
@@ -158,7 +159,7 @@ static bool IsImmLogical(uint64_t value, unsigned width, unsigned* n = nullptr,
  }

  // If the repeat period d is not a power of two, it can't be encoded.
-  if (!std::has_single_bit(uint32_t(d))) {
+  if (!IsPowerOf2(d)) {
    return false;
  }

@@ -178,7 +179,7 @@ static bool IsImmLogical(uint64_t value, unsigned width, unsigned* n = nullptr,
  static const uint64_t multipliers[] = {
    0x0000000000000001UL, 0x0000000100000001UL, 0x0001000100010001UL, 0x0101010101010101UL, 0x1111111111111111UL, 0x5555555555555555UL,
  };
-  uint64_t multiplier = multipliers[std::countl_zero(uint64_t(d)) - 57];
+  uint64_t multiplier = multipliers[CountLeadingZeros(d, kXRegSize) - 57];
  uint64_t candidate = (b - a) * multiplier;

  if (value != candidate) {
@@ -193,7 +194,7 @@ static bool IsImmLogical(uint64_t value, unsigned width, unsigned* n = nullptr,
  // Count the set bits in our basic stretch. The special case of clz(0) == -1
  // makes the answer come out right for stretches that reach the very top of
  // the word (e.g. numbers like 0xffffc00000000000).
-  int clz_b = (b == 0) ? -1 : std::countl_zero(b);
+  int clz_b = (b == 0) ? -1 : CountLeadingZeros(b, kXRegSize);
  int s = clz_a - clz_b;

  // Decide how many bits to rotate right by, to put the low bit of that basic
@@ -284,6 +285,11 @@ INT_1_TO_63_LIST(DECLARE_IS_UINT_N)

 private:

+template<typename V>
+static inline bool IsPowerOf2(V value) {
+  return (value != 0) && ((value & (value - 1)) == 0);
+}
+
 // Some compilers dislike negating unsigned integers,
 // so we provide an equivalent.
 template<typename T>
@@ -296,4 +302,50 @@ static inline uint64_t LowestSetBit(uint64_t value) {
  return value & UnsignedNegate(value);
 }

+template<typename V>
+static inline int CountLeadingZeros(V value, int width = (sizeof(V) * 8)) {
+#if COMPILER_HAS_BUILTIN_CLZ
+  if (width == 32) {
+    return (value == 0) ? 32 : __builtin_clz(static_cast<unsigned>(value));
+  } else if (width == 64) {
+    return (value == 0) ? 64 : __builtin_clzll(value);
+  }
+#endif
+  return CountLeadingZerosFallBack(value, width);
+}
+
+static inline int CountLeadingZerosFallBack(uint64_t value, int width) {
+  LOGMAN_THROW_A_FMT(IsPowerOf2(width) && (width <= 64), "Invalid width");
+  if (value == 0) {
+    return width;
+  }
+  int count = 0;
+  value = value << (64 - width);
+  if ((value & UINT64_C(0xffffffff00000000)) == 0) {
+    count += 32;
+    value = value << 32;
+  }
+  if ((value & UINT64_C(0xffff000000000000)) == 0) {
+    count += 16;
+    value = value << 16;
+  }
+  if ((value & UINT64_C(0xff00000000000000)) == 0) {
+    count += 8;
+    value = value << 8;
+  }
+  if ((value & UINT64_C(0xf000000000000000)) == 0) {
+    count += 4;
+    value = value << 4;
+  }
+  if ((value & UINT64_C(0xc000000000000000)) == 0) {
+    count += 2;
+    value = value << 2;
+  }
+  if ((value & UINT64_C(0x8000000000000000)) == 0) {
+    count += 1;
+  }
+  count += (value == 0);
+  return count;
+}
+
 public:
@@ -4,8 +4,7 @@ file(GLOB GEN_CONFIG_SOURCES CONFIGURE_DEPENDS *.json.in)
 # Any application configuration json file gets installed
 foreach(CONFIG_SRC ${CONFIG_SOURCES})
  install(FILES ${CONFIG_SRC}
-    DESTINATION ${DATA_DIRECTORY}/AppConfig/
-    COMPONENT Runtime)
+    DESTINATION ${DATA_DIRECTORY}/AppConfig/)
 endforeach()

 # Any configuration file json file that needs to be generated
@@ -22,6 +21,5 @@ foreach(GEN_CONFIG_SRC ${GEN_CONFIG_SOURCES})
  # Then install the configured json
  install(
    FILES ${CMAKE_BINARY_DIR}/Data/AppConfig/${CONFIG_NAME}
-    DESTINATION ${DATA_DIRECTORY}/AppConfig/
-    COMPONENT Runtime)
+    DESTINATION ${DATA_DIRECTORY}/AppConfig/)
 endforeach()
@@ -0,0 +1,3 @@
+x86 and x86-64 Linux emulator
+
+FEX allows you to run x86 applications on ARM64 Linux devices. It offers broad compatibility with both 32-bit and 64-bit binaries, and it can be used alongside Wine/Proton to play Windows games.
@@ -0,0 +1,18 @@
+#!/bin/sh
+set -e
+update_binfmt() {
+  # Check for update-binfmts
+  command -v update-binfmts >/dev/null || return 0
+
+  # Setup binfmt_misc
+  update-binfmts --import FEX-x86
+  update-binfmts --import FEX-x86_64
+}
+
+# Install FEXInterpreter hardlink
+# Needs to be done before setting up binfmt_misc
+ln -f /usr/bin/FEXLoader /usr/bin/FEXInterpreter
+
+if [ $(uname -m) = 'aarch64' ]; then
+  update_binfmt
+fi
@@ -0,0 +1,17 @@
+#!/bin/sh
+set -e
+update_binfmt() {
+  # Check for update-binfmts
+  command -v update-binfmts >/dev/null || return 0
+
+  # Uninstall
+  update-binfmts --unimport FEX-x86
+  update-binfmts --unimport FEX-x86_64
+}
+
+if [ $(uname -m) = 'aarch64' ]; then
+  update_binfmt
+fi
+
+# Remove FEXInterpreter hardlink
+unlink /usr/bin/FEXInterpreter
@@ -0,0 +1 @@
+activate-noawait ldconfig
@@ -14,7 +14,7 @@ RUN mkdir build

 ARG CC=clang-13
 ARG CXX=clang++-13
-RUN cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -DUSE_LINKER=lld -DENABLE_LTO=True -DBUILD_TESTING=False -DENABLE_ASSERTIONS=False -G Ninja .
+RUN cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -DUSE_LINKER=lld -DENABLE_LTO=True -DBUILD_TESTS=False -DENABLE_ASSERTIONS=False -G Ninja .
 RUN ninja

 WORKDIR /FEX/build
@@ -10,8 +10,7 @@ function(GenBinFmt Name)
  # Then install the configured binfmt
  install(
    FILES ${CMAKE_BINARY_DIR}/Data/binfmts/${FMT_NAME}
-    DESTINATION ${CMAKE_INSTALL_PREFIX}/share/binfmts/
-    COMPONENT Runtime)
+    DESTINATION ${CMAKE_INSTALL_PREFIX}/share/binfmts/)
 endfunction()

 if (NOT USE_LEGACY_BINFMTMISC)
@@ -20,8 +19,7 @@ if (NOT USE_LEGACY_BINFMTMISC)

  install(
    FILES ${CMAKE_BINARY_DIR}/Data/binfmts/FEX-x86.conf ${CMAKE_BINARY_DIR}/Data/binfmts/FEX-x86_64.conf
-    DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/binfmt.d/
-    COMPONENT Runtime)
+    DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/binfmt.d/)
 else()
  GenBinFmt(FEX-x86.in)
  GenBinFmt(FEX-x86_64.in)
@@ -1 +1 @@
-:FEX-x86:M:0:\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00:\xff\xff\xff\xff\xff\xfe\xfe\x00\x00\x00\x00\xff\xff\xff\xff\xff\xfe\xff\xff\xff:@CMAKE_INSTALL_PREFIX@/bin/FEX:POCF
+:FEX-x86:M:0:\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00:\xff\xff\xff\xff\xff\xfe\xfe\x00\x00\x00\x00\xff\xff\xff\xff\xff\xfe\xff\xff\xff:@CMAKE_INSTALL_PREFIX@/bin/FEXInterpreter:POCF
@@ -1,5 +1,5 @@
 package fex
-interpreter @CMAKE_INSTALL_PREFIX@/bin/FEX
+interpreter @CMAKE_INSTALL_PREFIX@/bin/FEXInterpreter
 magic \x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00
 offset 0
 mask \xff\xff\xff\xff\xff\xfe\xfe\x00\x00\x00\x00\xff\xff\xff\xff\xff\xfe\xff\xff\xff
@@ -1 +1 @@
-:FEX-x86_64:M:0:\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x3e\x00:\xff\xff\xff\xff\xff\xfe\xfe\x00\x00\x00\x00\xff\xff\xff\xff\xff\xfe\xff\xff\xff:@CMAKE_INSTALL_PREFIX@/bin/FEX:POCF
+:FEX-x86_64:M:0:\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x3e\x00:\xff\xff\xff\xff\xff\xfe\xfe\x00\x00\x00\x00\xff\xff\xff\xff\xff\xfe\xff\xff\xff:@CMAKE_INSTALL_PREFIX@/bin/FEXInterpreter:POCF
@@ -1,5 +1,5 @@
 package fex
-interpreter @CMAKE_INSTALL_PREFIX@/bin/FEX
+interpreter @CMAKE_INSTALL_PREFIX@/bin/FEXInterpreter
 magic \x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x3e\x00
 offset 0
 mask \xff\xff\xff\xff\xff\xfe\xfe\x00\x00\x00\x00\xff\xff\xff\xff\xff\xfe\xff\xff\xff
@@ -2,8 +2,8 @@

 let
  toolchain = pkgs.fetchzip {
-    url = "https://github.com/bylaws/llvm-mingw/releases/download/20250920/llvm-mingw-20250920-ucrt-ubuntu-22.04-aarch64.tar.xz";
-    sha256 = "sha256-LaojKjC8KzY+soW5u6eoDoXE3qtYk9Ejr7M3enTqRAE=";
+    url = "https://github.com/bylaws/llvm-mingw/releases/download/20250305/llvm-mingw-20250305-ucrt-ubuntu-20.04-aarch64.tar.xz";
+    sha256 = "sha256-cA03/ab9O61eO9+S2JzIXD4V0HzTXK5/AYyxW2d73Po=";
  };

  cmakeToolchainFile = pkgs.substitute {
@@ -45,7 +45,7 @@ pkgs.mkShell {
    fi
  '';

-  # E.g. cmake $FEX_CMAKE_TOOLCHAIN_ARM64EC -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_LTO=False -DBUILD_TESTING=False
+  # E.g. cmake $FEX_CMAKE_TOOLCHAIN_ARM64EC -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_LTO=False -DBUILD_TESTS=False
  FEX_CMAKE_TOOLCHAIN_ARM64EC = "--toolchain ${cmakeToolchainFile} -DMINGW_TRIPLE=arm64ec-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows";
  FEX_CMAKE_TOOLCHAIN_WOW64 = "--toolchain ${cmakeToolchainFile} -DMINGW_TRIPLE=aarch64-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows";
  FEX_MESON_CROSSFILE = "--cross-file ${mesonCrossFile}";
@@ -18,4 +18,4 @@ then
 fi

 set -o xtrace
-cmake $FEX_CMAKE_TOOLCHAIN_WOW64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_LTO=False -DBUILD_TESTING=False $@
+cmake $FEX_CMAKE_TOOLCHAIN_WOW64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_LTO=False -DBUILD_TESTS=False $@
@@ -18,4 +18,4 @@ then
 fi

 set -o xtrace
-cmake $FEX_CMAKE_TOOLCHAIN_ARM64EC -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_LTO=False -DBUILD_TESTING=False $@
+cmake $FEX_CMAKE_TOOLCHAIN_ARM64EC -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DENABLE_LTO=False -DBUILD_TESTS=False $@
@@ -14,4 +14,4 @@ fi
 rm -rf unittests/FEXLinuxTests

 set -o xtrace
-cmake . $FEX_CMAKE_TOOLCHAINS -DBUILD_TESTING=ON -DBUILD_FEX_LINUX_TESTS=ON
+cmake . $FEX_CMAKE_TOOLCHAINS -DBUILD_TESTS=ON -DBUILD_FEX_LINUX_TESTS=ON
@@ -214,6 +214,7 @@ class ClangFormatHelper(FormatHelper):
            self.clang_fmt_path,
            "--binary=clang-format-19",
            "--diff",
+            "--diff_from_common_commit",
        ]

        if args.start_rev and args.end_rev:
@@ -78,6 +78,6 @@ install (DIRECTORY include/FEXCore ${CMAKE_BINARY_DIR}/include/FEXCore
  DESTINATION include
  COMPONENT Development)

-if (BUILD_TESTING)
+if (BUILD_TESTS)
  add_subdirectory(unittests/)
 endif()
@@ -118,6 +118,41 @@ def print_man_env_option(name, desc, default, no_json_key):
    output_man.write("\\fBdefault:\\fR {0}\n".format(default))
    output_man.write(".Pp\n\n")

+def print_man_options(options):
+    output_man.write(".Sh OPTIONS\n")
+    output_man.write(".Bl -tag -width -indent\n")
+    for op_group, group_vals in options.items():
+        for op_key, op_vals in group_vals.items():
+            short = None
+            long = op_key.lower()
+
+            if ("ShortArg" in op_vals):
+                short = op_vals["ShortArg"]
+
+            default = op_vals["Default"]
+            value_type = op_vals["Type"]
+
+            # Textual default rather than enum based
+            if ("TextDefault" in op_vals):
+                default = op_vals["TextDefault"]
+
+            if (value_type == "str" or value_type == "strarray" or value_type == "strenum"):
+                # Wrap the string argument in quotes
+                default = "'" + default + "'"
+            print_man_option(
+                short,
+                long,
+                op_vals["Desc"],
+                default
+            )
+            if (value_type == "strenum"):
+                Enums = op_vals["Enums"]
+                output_man.write("\\fBAvailable Options:\\fR\n")
+                output_man.write(", ".join(f"{enum_op_val}" for [_, enum_op_val] in Enums.items()))
+                output_man.write("\n.sp\n")
+
+    output_man.write(".El\n")
+
 def print_man_environment(options):
    output_man.write(".Sh ENVIRONMENT\n")
    output_man.write(".Bl -tag -width -indent\n")
@@ -159,7 +194,7 @@ def print_man_environment_tail():
    "By default FEX will look in {$HOME, $XDG_CONFIG_HOME}/.fex-emu/",
    "This will override the full path",
    "If FEX_PORTABLE is declared then relative paths are also supported",
-    "For FEX: Relative to the FEX binary",
+    "For FEXInterpreter: Relative to the FEXInterpreter binary",
    "For WINE: Relative to %LOCALAPPDATA%"
    ],
    "''", True)
@@ -173,7 +208,7 @@ def print_man_environment_tail():
    "One must be careful with this option as it will override any applications that load with execve as well"
    "If you need to support applications that execve then use FEX_APP_CONFIG_LOCATION instead"
    "If FEX_PORTABLE is declared then relative paths are also supported",
-    "For FEX: Relative to the FEX binary",
+    "For FEXInterpreter: Relative to the FEXInterpreter binary",
    "For WINE: Relative to %LOCALAPPDATA%"
    ],
    "''", True)
@@ -192,8 +227,8 @@ def print_man_environment_tail():
    "PORTABLE",
    [
    "Allows FEX to run without installation. Global locations for configuration and binfmt_misc are ignored.",
-    "For FEX on Linux:",
-    "These files are instead read from <FEXPath>/fex-emu/ by default.",
+    "For FEXInterpreter on Linux:",
+    "These files are instead read from <FEXInterpreterPath>/fex-emu/ by default.",
    "For Arm64ec/Wow64 WINE builds:",
    "These files are instead read from $LOCALAPPDATA/fex-emu/ by default.",
    "For further customization, see FEX_APP_CONFIG_LOCATION and FEX_APP_DATA_LOCATION."
@@ -205,12 +240,20 @@ def print_man_header():
 .Dt FEX
 .Os Linux
 .Sh NAME
-.Nm FEX
+.Nm FEXLoader
+.Nm FEXInterpreter
 .Nm FEXBash
 .Nd Fast x86-64 and x86 emulation.
 .Sh SYNOPSIS
 .Nm
-.Ar <args> ...
+.Op options
+.Op Ar --
+.Ar Application
+<args> ...
+.Pp
+.Nm FEXInterpreter
+.Ar Application
+<args> ...
 .Pp
 .Nm FEXBash
 .Ar <args> ...
@@ -318,6 +361,82 @@ def print_config_option(type, group_name, json_name, default_value, short, choic

    output_argloader.write("\n");

+def print_argloader_options(options):
+    output_argloader.write("#ifdef BEFORE_PARSE\n")
+    output_argloader.write("#undef BEFORE_PARSE\n")
+    for op_group, group_vals in options.items():
+        for op_key, op_vals in group_vals.items():
+            default = op_vals["Default"]
+
+            if (op_vals["Type"] == "str" or op_vals["Type"] == "strarray" or op_vals["Type"] == "strenum"):
+                # Wrap the string argument in quotes
+                default = "\"" + default + "\""
+
+            # Textual default rather than enum based
+            if ("TextDefault" in op_vals):
+                default = "\"" + op_vals["TextDefault"] + "\""
+
+            short = None
+            choices = None
+
+            if ("ShortArg" in op_vals):
+                short = op_vals["ShortArg"]
+            if ("Choices" in op_vals):
+                choices = op_vals["Choices"]
+
+            print_config_option(
+                op_vals["Type"],
+                op_group,
+                op_key,
+                default,
+                short,
+                choices,
+                op_vals["Desc"])
+
+        output_argloader.write("\n")
+    output_argloader.write("#endif\n")
+
+def print_parse_argloader_options(options):
+    output_argloader.write("#ifdef AFTER_PARSE\n")
+    output_argloader.write("#undef AFTER_PARSE\n")
+    for op_group, group_vals in options.items():
+        for op_key, op_vals in group_vals.items():
+            output_argloader.write("if (Options.is_set_by_user(\"{0}\")) {{\n".format(op_key))
+
+            value_type = op_vals["Type"]
+            NeedsString = False
+            conversion_func = "fextl::fmt::format(\"{}\", "
+            if ("ArgumentHandler" in op_vals):
+                NeedsString = True
+                conversion_func = "FEXCore::Config::Handler::{0}(".format(op_vals["ArgumentHandler"])
+            if (value_type == "str"):
+                NeedsString = True
+                conversion_func = "std::move("
+            if (value_type == "bool"):
+                # boolean values need a decimal specifier. Otherwise fmt prints strings.
+                conversion_func = "fextl::fmt::format(\"{:d}\", "
+
+            if (value_type == "strenum"):
+                output_argloader.write("\tfextl::string UserValue = Options[\"{0}\"];\n".format(op_key))
+                output_argloader.write("\tSet(FEXCore::Config::ConfigOption::CONFIG_{}, FEXCore::Config::EnumParser<FEXCore::Config::{}ConfigPair>(FEXCore::Config::{}_EnumPairs, UserValue));\n".format(op_key.upper(), op_key, op_key, op_key))
+            elif (value_type == "strarray"):
+                # these need a bit more help
+                output_argloader.write("\tauto Array = Options.all(\"{0}\");\n".format(op_key))
+                output_argloader.write("\tfor (auto iter = Array.begin(); iter != Array.end(); ++iter) {\n")
+                output_argloader.write("\t\tAppendStrArrayValue(FEXCore::Config::ConfigOption::CONFIG_{0}, *iter);\n".format(op_key.upper()))
+                output_argloader.write("\t}\n")
+            else:
+                if (NeedsString):
+                    output_argloader.write("\tfextl::string UserValue = Options[\"{0}\"];\n".format(op_key))
+                else:
+                    output_argloader.write("\t{0} UserValue = Options.get(\"{1}\");\n".format(value_type, op_key))
+
+                output_argloader.write("\tSet(FEXCore::Config::ConfigOption::CONFIG_{0}, {1}UserValue));\n".format(op_key.upper(), conversion_func))
+            output_argloader.write("}\n")
+
+    output_argloader.write("#endif\n")
+
+
 def print_parse_envloader_options(options):
    output_argloader.write("#ifdef ENVLOADER\n")
    output_argloader.write("#undef ENVLOADER\n")
@@ -328,13 +447,13 @@ def print_parse_envloader_options(options):
            value_type = op_vals["Type"]
            if (value_type == "strenum"):
                output_argloader.write("else if (Key == \"FEX_{0}\") {{\n".format(op_key.upper()))
-                output_argloader.write("\tValue = FEXCore::Config::EnumParser<FEXCore::Config::{}ConfigPair>(FEXCore::Config::{}_EnumPairs, Value_View);\n".format(op_key, op_key))
+                output_argloader.write("Value = FEXCore::Config::EnumParser<FEXCore::Config::{}ConfigPair>(FEXCore::Config::{}_EnumPairs, Value_View);\n".format(op_key, op_key, op_key))
                output_argloader.write("}\n")

            if ("ArgumentHandler" in op_vals):
                conversion_func = "FEXCore::Config::Handler::{0}".format(op_vals["ArgumentHandler"])
                output_argloader.write("else if (Key == \"FEX_{0}\") {{\n".format(op_key.upper()))
-                output_argloader.write("\tValue = {0}(Value_View);\n".format(conversion_func))
+                output_argloader.write("Value = {0}(Value_View);\n".format(conversion_func))
                output_argloader.write("}\n")
    output_argloader.write("#endif\n")

@@ -348,15 +467,15 @@ def print_parse_jsonloader_options(options):
            value_type = op_vals["Type"]
            if (value_type == "strenum"):
                output_argloader.write("else if (KeyName == \"{0}\") {{\n".format(op_key))
-                output_argloader.write("\tSet(KeyOption, FEXCore::Config::EnumParser<FEXCore::Config::{}ConfigPair>(FEXCore::Config::{}_EnumPairs, Value_View));\n".format(op_key, op_key))
+                output_argloader.write("\tSet(KeyOption, FEXCore::Config::EnumParser<FEXCore::Config::{}ConfigPair>(FEXCore::Config::{}_EnumPairs, Value_View));\n".format(op_key, op_key, op_key))
                output_argloader.write("}\n")
            elif (value_type == "strarray"):
                output_argloader.write("else if (KeyName == \"{0}\") {{\n".format(op_key))
                output_argloader.write("\tAppendStrArrayValue(KeyOption, ConfigString);\n")
                output_argloader.write("}\n")
    assert op_key is not None, "No options found in JSONLOADER"
-    output_argloader.write("else {\n")
-    output_argloader.write("\tSet(KeyOption, ConfigString);\n")
+    output_argloader.write("else {{\n".format(op_key))
+    output_argloader.write("Set(KeyOption, ConfigString);\n")
    output_argloader.write("}\n")

    output_argloader.write("#endif\n")
@@ -398,6 +517,41 @@ def print_parse_enum_options(options):

    output_argloader.write("#endif\n")

+def check_for_duplicate_options(options):
+    short_map = []
+    long_map = []
+
+    # Spin through all the items and see if we have a duplicate option
+    for op_group, group_vals in options.items():
+        for op_key, op_vals in group_vals.items():
+            short = None
+            long = op_key.lower()
+            long_invert = None
+            if ("ShortArg" in op_vals):
+                short = op_vals["ShortArg"]
+            if (op_vals["Type"] == "bool"):
+                long_invert = "no-" + long
+
+            # Check for short key duplication
+            if (short != None):
+                if (short in short_map):
+                    raise Exception("Short config '{0}' for option '{1}' has duplicate entry!".format(short, op_key))
+                else:
+                    short_map.append(short)
+
+            # Check for long key duplication
+            if (long in long_map):
+                raise Exception("Long config '{0}' has duplicate entry!".format(long))
+            else:
+                long_map.append(long)
+
+            # Check for long key duplication
+            if (long_invert != None):
+                if (long_invert in long_map):
+                    raise Exception("Long config '{0}' has duplicate entry!".format(long_invert))
+                else:
+                    long_map.append(long_invert)
+
 if (len(sys.argv) < 5):
    sys.exit()

@@ -414,6 +568,8 @@ json_object = json.loads(json_text)
 options = json_object["Options"]
 unnamed_options = json_object["UnnamedOptions"]

+check_for_duplicate_options(options)
+
 # Generate config include file
 output_file = open(output_filename, "w")
 print_header()
@@ -425,6 +581,7 @@ output_file.close()
 # Generate man file
 output_man = open(output_man_page, "w")
 print_man_header()
+print_man_options(options)
 print_man_environment(options)
 print_man_tail()

@@ -432,6 +589,8 @@ output_man.close()

 # Generate argument loader code
 output_argloader = open(output_argumentloader_filename, "w")
+print_argloader_options(options);
+print_parse_argloader_options(options);

 # Generate environment loader code
 print_parse_envloader_options(options);
@@ -58,10 +58,9 @@ class OpDefinition:
    JITDispatch: bool
    JITDispatchOverride: str
    TiedSource: int
-    Inline: list[str]
-    Arguments: list[OpArgument]
-    EmitValidation: list[str]
-    Desc: list[str]
+    Arguments: list
+    EmitValidation: list
+    Desc: list

    def __init__(self):
        self.Name = None
@@ -92,14 +91,19 @@ class OpDefinition:
        attrs = vars(self)
        print(", ".join("%s: %s" % item for item in attrs.items()))

-IRTypesToCXX: dict[str, IRType] = {}
-CXXTypeToIR: dict[str, IRType] = {}
-IROps: list[OpDefinition] = []
+IRTypesToCXX = {}
+CXXTypeToIR = {}
+IROps = []

-IROpNameSet: set[str] = set()
+IROpNameMap = {}

-def is_ssa_type(op_type: str):
-    return op_type in {"SSA", "GPR", "GPRPair", "FPR"}
+def is_ssa_type(type):
+    if (type == "SSA" or
+       type == "GPR" or
+       type == "GPRPair" or
+       type == "FPR"):
+       return True
+    return False

 def parse_irtypes(irtypes):
    for op_key, op_val in irtypes.items():
@@ -214,8 +218,11 @@ def parse_ops(ops):
                        OpArg.DefaultInitializer = DefaultInit[1][:-1]

                    # If SSA type then we can generate validation for this op
-                    if OpArg.IsSSA and OpArg.Type in {"GPR", "GPRPair", "FPR"}:
-                        OpDef.EmitValidation.append(f"GetOpRegClass({ArgName}) == RegClass::Invalid || WalkFindRegClass({ArgName}) == RegClass::{OpArg.Type}")
+                    if (OpArg.IsSSA and
+                        (OpArg.Type == "GPR" or
+                        OpArg.Type == "GPRPair" or
+                        OpArg.Type == "FPR")):
+                        OpDef.EmitValidation.append(f"GetOpRegClass({ArgName}) == InvalidClass || WalkFindRegClass({ArgName}) == {OpArg.Type}Class")

                    OpArg.Name = ArgName
                    OpArg.NameWithPrefix = NameWithPrefix
@@ -271,12 +278,6 @@ def parse_ops(ops):
            if "TiedSource" in op_val:
                OpDef.TiedSource = op_val["TiedSource"]

-            # Pad Inline out to the argument count
-            OpDef.Inline = [''] * len(OpDef.Arguments)
-            if "Inline" in op_val:
-                Value = op_val["Inline"]
-                OpDef.Inline[0:len(Value)] = Value
-
            # Do some fixups of the data here
            if len(OpDef.EmitValidation) != 0:
                for i in range(len(OpDef.EmitValidation)):
@@ -288,28 +289,21 @@ def parse_ops(ops):
            #OpDef.print()

            # Error on duplicate op
-            if OpDef.Name in IROpNameSet:
+            if OpDef.Name in IROpNameMap:
                ExitError("Duplicate Op defined! {}".format(OpDef.Name))

            IROps.append(OpDef)
-            IROpNameSet.add(OpDef.Name)
+            IROpNameMap[OpDef.Name] = 1

 # Print out enum values
-def print_enums(enums):
+def print_enums():
    output_file.write("#ifdef IROP_ENUM\n")
    output_file.write("enum IROps : uint16_t {\n")
+
    for op in IROps:
        output_file.write("\tOP_{},\n" .format(op.Name.upper()))
-    output_file.write("};\n")

-    for name, members in enums.items():
-        output_file.write(f"enum {name} {{\n")
-        for member in members:
-            if member:
-                output_file.write(f"\t{member}\n")
-            else:
-                output_file.write("\n")
-        output_file.write("};\n\n")
+    output_file.write("};\n")

    output_file.write("#undef IROP_ENUM\n")
    output_file.write("#endif\n\n")
@@ -403,16 +397,16 @@ def print_ir_sizes():
    // Make sure our array maps directly to the IROps enum
    static_assert(IRSizes[IROps::OP_LAST] == -1ULL);

-    [[nodiscard]] inline size_t GetSize(IROps Op) { return IRSizes[Op]; }
-    [[nodiscard, gnu::const]] std::string_view const& GetName(IROps Op);
-    [[nodiscard, gnu::const]] uint8_t GetArgs(IROps Op);
-    [[nodiscard, gnu::const]] uint8_t GetRAArgs(IROps Op);
-    [[nodiscard, gnu::const]] FEXCore::IR::RegClass GetRegClass(IROps Op);
-    [[nodiscard, gnu::const]] bool HasSideEffects(IROps Op);
-    [[nodiscard, gnu::const]] bool ImplicitFlagClobber(IROps Op);
-    [[nodiscard, gnu::const]] bool GetHasDest(IROps Op);
-    [[nodiscard, gnu::const]] bool LoweredX87(IROps Op);
-    [[nodiscard, gnu::const]] int8_t TiedSource(IROps Op);
+    [[maybe_unused, nodiscard]] static size_t GetSize(IROps Op) { return IRSizes[Op]; }
+    [[nodiscard, gnu::const, gnu::visibility("default")]] std::string_view const& GetName(IROps Op);
+    [[nodiscard, gnu::const, gnu::visibility("default")]] uint8_t GetArgs(IROps Op);
+    [[nodiscard, gnu::const, gnu::visibility("default")]] uint8_t GetRAArgs(IROps Op);
+    [[nodiscard, gnu::const, gnu::visibility("default")]] FEXCore::IR::RegisterClassType GetRegClass(IROps Op);
+    [[nodiscard, gnu::const, gnu::visibility("default")]] bool HasSideEffects(IROps Op);
+    [[nodiscard, gnu::const, gnu::visibility("default")]] bool ImplicitFlagClobber(IROps Op);
+    [[nodiscard, gnu::const, gnu::visibility("default")]] bool GetHasDest(IROps Op);
+    [[nodiscard, gnu::const, gnu::visibility("default")]] bool LoweredX87(IROps Op);
+    [[nodiscard, gnu::const, gnu::visibility("default")]] int8_t TiedSource(IROps Op);

    #undef IROP_SIZES
    #endif
@@ -421,29 +415,30 @@ def print_ir_sizes():
 def print_ir_reg_classes():
    output_file.write("#ifdef IROP_REG_CLASSES_IMPL\n")

-    output_file.write("constexpr std::array<FEXCore::IR::RegClass, IROps::OP_LAST + 1> IRRegClasses = {\n")
+    output_file.write("constexpr std::array<FEXCore::IR::RegisterClassType, IROps::OP_LAST + 1> IRRegClasses = {\n")
    for op in IROps:
        if op.Name == "Last":
-            output_file.write("\tRegClass::Invalid,\n")
+            output_file.write("\tFEXCore::IR::InvalidClass,\n")
        else:
-            if op.HasDest and op.DestType is None:
+            Class = "Invalid"
+            if op.HasDest and op.DestType == None:
                ExitError("IR op {} has destination with no destination class".format(op.Name))

            if op.HasDest and op.DestType == "SSA": # Special case SSA type
-                output_file.write("\tRegClass::Complex,\n")
+                output_file.write("\tFEXCore::IR::ComplexClass,\n")
            elif op.HasDest:
-                output_file.write("\tRegClass::{},\n".format(op.DestType))
+                output_file.write("\tFEXCore::IR::{}Class,\n".format(op.DestType))
            else:
                # No destination so it has an invalid destination class
-                output_file.write("\tRegClass::Invalid, // No destination\n")
+                output_file.write("\tFEXCore::IR::InvalidClass, // No destination\n")


    output_file.write("};\n\n")

    output_file.write("// Make sure our array maps directly to the IROps enum\n")
-    output_file.write("static_assert(IRRegClasses[IROps::OP_LAST] == RegClass::Invalid);\n\n")
+    output_file.write("static_assert(IRRegClasses[IROps::OP_LAST] == FEXCore::IR::InvalidClass);\n\n")

-    output_file.write("FEXCore::IR::RegClass GetRegClass(IROps Op) { return IRRegClasses[Op]; }\n\n")
+    output_file.write("FEXCore::IR::RegisterClassType GetRegClass(IROps Op) { return IRRegClasses[Op]; }\n\n")

    output_file.write("#undef IROP_REG_CLASSES_IMPL\n")
    output_file.write("#endif\n\n")
@@ -566,7 +561,9 @@ def print_ir_arg_printer():

            SSAArgNum = 0
            FirstArg = True
-            for arg in op.Arguments:
+            for i in range(0, len(op.Arguments)):
+                arg = op.Arguments[i]
+
                # No point printing temporaries that we can't recover
                if arg.Temporary:
                    continue
@@ -591,13 +588,13 @@ def print_ir_arg_printer():
    output_file.write("#endif\n")

 def print_validation(op):
-    if len(op.EmitValidation) != 0:
-        output_file.write("#if defined(ASSERTIONS_ENABLED) && ASSERTIONS_ENABLED\n")
+    if op.EmitValidation != None:
+        output_file.write("\t\t#if defined(ASSERTIONS_ENABLED) && ASSERTIONS_ENABLED\n")

        for Validation in op.EmitValidation:
            Sanitized = Validation.replace("\"", "\\\"")
-            output_file.write("\t\tLOGMAN_THROW_A_FMT({}, \"{}\");\n".format(Validation, Sanitized))
-        output_file.write("#endif\n")
+            output_file.write("\tLOGMAN_THROW_A_FMT({}, \"{}\");\n".format(Validation, Sanitized))
+        output_file.write("\t\t#endif\n")

 # Print out IR allocator helpers
 def print_ir_allocator_helpers():
@@ -667,7 +664,7 @@ def print_ir_allocator_helpers():
    output_file.write("\t\treturn HeaderOp->Op;\n")
    output_file.write("\t}\n\n")

-    output_file.write("\tFEXCore::IR::RegClass GetOpRegClass(const OrderedNode *Op) const {\n")
+    output_file.write("\tFEXCore::IR::RegisterClassType GetOpRegClass(const OrderedNode *Op) const {\n")
    output_file.write("\t\treturn GetRegClass(GetOpType(Op));\n")
    output_file.write("\t}\n\n")

@@ -681,21 +678,22 @@ def print_ir_allocator_helpers():
            output_file.write("\tIRPair<IROp_{}> _{}(" .format(op.Name, op.Name))

            # Output SSA args first
-            for i, arg in enumerate(op.Arguments):
-                LastArg = i == len(op.Arguments) - 1
+            for i in range(0, len(op.Arguments)):
+                arg = op.Arguments[i]
+                LastArg = len(op.Arguments) - i - 1 == 0

                if arg.Temporary:
                    CType = IRTypesToCXX[arg.Type].CXXName
-                    output_file.write("{} {}".format(CType, arg.Name))
+                    output_file.write("{} {}".format(CType, arg.Name));
                elif arg.IsSSA:
                    # SSA value
                    output_file.write("OrderedNodeWrapper {}".format(arg.Name))
                else:
                    # User defined op that is stored
                    CType = IRTypesToCXX[arg.Type].CXXName
-                    output_file.write("{} {}".format(CType, arg.Name))
+                    output_file.write("{} {}".format(CType, arg.Name));

-                if arg.DefaultInitializer:
+                if arg.DefaultInitializer != None:
                    output_file.write(" = {}".format(arg.DefaultInitializer))

                if not LastArg:
@@ -753,19 +751,20 @@ def print_ir_allocator_helpers():
            if op.SSAArgNum:
                output_file.write("\tIRPair<IROp_{}> _{}(" .format(op.Name, op.Name))

-                for i, arg in enumerate(op.Arguments):
-                    LastArg = i == len(op.Arguments) - 1
+                for i in range(0, len(op.Arguments)):
+                    arg = op.Arguments[i]
+                    LastArg = len(op.Arguments) - i - 1 == 0

                    if arg.Temporary:
                        CType = IRTypesToCXX[arg.Type].CXXName
-                        output_file.write("{} {}".format(CType, arg.Name))
+                        output_file.write("{} {}".format(CType, arg.Name));
                    elif arg.IsSSA:
                        output_file.write("OrderedNode *{}".format(arg.Name))
                    else:
                        CType = IRTypesToCXX[arg.Type].CXXName
-                        output_file.write("{} {}".format(CType, arg.Name))
+                        output_file.write("{} {}".format(CType, arg.Name));

-                    if arg.DefaultInitializer:
+                    if arg.DefaultInitializer != None:
                        output_file.write(" = {}".format(arg.DefaultInitializer))

                    if not LastArg:
@@ -774,29 +773,9 @@ def print_ir_allocator_helpers():
                output_file.write(") {\n")
                output_file.write("\t\tauto ListDataBegin = DualListData.ListBegin();\n")

-                idx = 0
                for arg in op.Arguments:
                    if arg.IsSSA:
-                        # Inline an immediate if we can
-                        inline = op.Inline[idx]
-                        idx += 1
-
-                        if inline != '':
-                            Sized = "Size" in [x.Name for x in op.Arguments]
-                            P = ["Size" if Sized else "OpSize::i64Bit", arg.Name]
-
-                            # A few cases need extra info plumbed.
-                            if inline == "SubtractZero":
-                                P += ["Src2"]
-                            elif inline == "Mem":
-                                P += ["OffsetType", "OffsetScale"]
-                            elif inline == "Memtso":
-                                P += ["OffsetType", "OffsetScale", "true /* TSO */"]
-                                inline = "Mem"
-
-                            output_file.write(f"\t\t{arg.Name} = Inline{inline}({', '.join(P)});\n")
-
-                        output_file.write(f"\t\t{arg.Name}->AddUse();\n")
+                        output_file.write("\t\t{}->AddUse();\n".format(arg.Name))

                # Insert validation here. This is skipped for the
                # OrderedNodeWrapper version because validation can depend on
@@ -806,15 +785,16 @@ def print_ir_allocator_helpers():
                print_validation(op)

                output_file.write(f"\t\treturn _{op.Name}(")
-                for i, arg in enumerate(op.Arguments):
-                    LastArg = i == len(op.Arguments) - 1
+                for i in range(0, len(op.Arguments)):
+                    arg = op.Arguments[i]
+                    LastArg = len(op.Arguments) - i - 1 == 0
                    output_file.write(arg.Name)
                    if arg.IsSSA:
                        output_file.write("->Wrapped(ListDataBegin)")
                    if not LastArg:
                        output_file.write(", ")
-                output_file.write(");\n")
-                output_file.write("\t}\n\n")
+                output_file.write(");\n");
+                output_file.write("\t}\n\n");

    output_file.write("#undef IROP_ALLOCATE_HELPERS\n")
    output_file.write("#endif\n")
@@ -845,8 +825,8 @@ def print_ir_dispatcher_dispatch():
    output_dispatch_file.write("#endif\n")


-if len(sys.argv) < 4:
-    ExitError("Insufficient parameters passed to script")
+if (len(sys.argv) < 4):
+    ExitError()

 output_filename = sys.argv[2]
 output_dispatcher_filename = sys.argv[3]
@@ -858,7 +838,6 @@ json_file.close()
 json_object = json.loads(json_text)
 json_object = {k.upper(): v for k, v in json_object.items()}

-enums = json_object["ENUMS"]
 ops = json_object["OPS"]
 irtypes = json_object["IRTYPES"]
 defines = json_object["DEFINES"]
@@ -868,7 +847,7 @@ parse_ops(ops)

 output_file = open(output_filename, "w")

-print_enums(enums)
+print_enums()
 print_ir_structs(defines)
 print_ir_sizes()
 print_ir_reg_classes()
@@ -18,12 +18,14 @@ set (SRCS
  Common/JitSymbols.cpp
  Interface/Context/Context.cpp
  Interface/Core/LookupCache.cpp
-  Interface/Core/CodeCache.cpp
  Interface/Core/Core.cpp
  Interface/Core/CPUBackend.cpp
  Interface/Core/Addressing.cpp
  Interface/Core/CPUID.cpp
  Interface/Core/Frontend.cpp
+  Interface/Core/ObjectCache/JobHandling.cpp
+  Interface/Core/ObjectCache/NamedRegionObjectHandler.cpp
+  Interface/Core/ObjectCache/ObjectCacheService.cpp
  Interface/Core/OpcodeDispatcher/AVX_128.cpp
  Interface/Core/OpcodeDispatcher/Crypto.cpp
  Interface/Core/OpcodeDispatcher/Flags.cpp
@@ -31,6 +33,7 @@ set (SRCS
  Interface/Core/OpcodeDispatcher/X87.cpp
  Interface/Core/OpcodeDispatcher/X87F64.cpp
  Interface/Core/OpcodeDispatcher.cpp
+  Interface/Core/X86Tables.cpp
  Interface/Core/X86HelperGen.cpp
  Interface/Core/ArchHelpers/Arm64Emitter.cpp
  Interface/Core/Dispatcher/Dispatcher.cpp
@@ -58,9 +61,11 @@ set (SRCS
  Interface/Core/X86Tables/VEXTables.cpp
  Interface/Core/X86Tables/X87Tables.cpp
  Interface/GDBJIT/GDBJIT.cpp
+  Interface/IR/AOTIR.cpp
  Interface/IR/IRDumper.cpp
  Interface/IR/IREmitter.cpp
  Interface/IR/PassManager.cpp
+  Interface/IR/Passes/ConstProp.cpp
  Interface/IR/Passes/IRDumperPass.cpp
  Interface/IR/Passes/IRValidation.cpp
  Interface/IR/Passes/RedundantFlagCalculationElimination.cpp
@@ -202,7 +207,7 @@ add_custom_target(CONFIG_INC
  DEPENDS "${OUTPUT_MAN_NAME_COMPRESS}")

 # Install the compressed man page
-install(FILES ${OUTPUT_MAN_NAME_COMPRESS} COMPONENT Runtime DESTINATION ${MAN_DIR}/man1)
+install(FILES ${OUTPUT_MAN_NAME_COMPRESS} DESTINATION ${MAN_DIR}/man1)

 # Add in diagnostic colours if the option is available.
 # Ninja code generator will kill colours if this isn't here
@@ -2,10 +2,12 @@
 #pragma once

 #include <FEXCore/fextl/memory.h>
+#include <FEXCore/Debug/InternalThreadState.h>

 #include <chrono>
-#include <cstddef>
 #include <cstdint>
+#include <cstdio>
+#include <memory>
 #include <string_view>

 namespace FEXCore {
@@ -4,9 +4,9 @@
 #include <FEXCore/Utils/LogManager.h>
 #include <FEXCore/fextl/sstream.h>
 #include <FEXCore/fextl/string.h>
+#include <FEXHeaderUtils/BitUtils.h>
 #include "cephes_128bit.h"

-#include <bit>
 #include <cmath>
 #include <cstring>
 #include <stdint.h>
@@ -294,11 +294,7 @@ struct FEX_PACKED X80SoftFloat {
  FCMP(softfloat_state* state, const X80SoftFloat& lhs, const X80SoftFloat& rhs, bool* eq, bool* lt, bool* nan) {
    *eq = extF80_eq(state, lhs, rhs);
    *lt = extF80_lt(state, lhs, rhs);
-
-    // Use IEEE 754 semantics: unordered if neither <, =, nor > is true
-    // This is more reliable than custom NaN detection
-    bool gt = !(*eq) && !(*lt) && extF80_le(state, rhs, lhs);
-    *nan = !(*eq) && !(*lt) && !gt;
+    *nan = IsNan(lhs) || IsNan(rhs);
  }

  FEXCORE_PRESERVE_ALL_ATTR static X80SoftFloat FSCALE(softfloat_state* state, const X80SoftFloat& lhs, const X80SoftFloat& rhs) {
@@ -501,53 +497,12 @@ struct FEX_PACKED X80SoftFloat {

  float ToF32(softfloat_state* state) const {
    const float32_t Result = extF80_to_f32(state, *this);
-    return std::bit_cast<float>(Result);
-  }
-
-  bool IsSignalingNaN() const {
-    return (Exponent == 0x7FFF) && (Significand & 0x8000000000000000ULL) && !(Significand & 0x4000000000000000ULL) && // Bit 62 clear (signaling)
-           (Significand & 0x3FFFFFFFFFFFFFFFULL);
-  }
-
-  bool IsQuietNaN() const {
-    return (Exponent == 0x7FFF) && (Significand & 0x8000000000000000ULL) && (Significand & 0x4000000000000000ULL); // Bit 62 set (quiet)
-  }
-
-  // Helper to detect if this is any NaN
-  bool IsNaN() const {
-    return IsSignalingNaN() || IsQuietNaN();
-  }
-
-  // X87 value to F64 while preserving signaling nan property
-  double ToF64_PreserveNan(softfloat_state* state) const {
-    if (IsSignalingNaN()) {
-      // we keep it as a signaling nan in ieee754 in 64bits
-      uint64_t sign_bit = Sign ? 0x8000000000000000ULL : 0;
-      uint64_t exp_bits = 0x7FF0000000000000ULL;
-      uint64_t x87_frac = Significand & 0x3FFFFFFFFFFFFFFFULL;
-      uint64_t ieee_frac = (x87_frac >> 11) & 0x0007FFFFFFFFFFFFULL;
-
-      if (ieee_frac == 0) {
-        ieee_frac = 1;
-      }
-      ieee_frac &= ~0x0008000000000000ULL;
-
-      uint64_t result_bits = sign_bit | exp_bits | ieee_frac;
-      return std::bit_cast<double>(result_bits);
-    } else if (IsQuietNaN()) {
-      const float64_t Result = extF80_to_f64(state, *this);
-      uint64_t result_bits = std::bit_cast<uint64_t>(Result);
-      result_bits |= 0x0008000000000000ULL;
-      return std::bit_cast<double>(result_bits);
-    } else {
-      const float64_t Result = extF80_to_f64(state, *this);
-      return std::bit_cast<double>(Result);
-    }
+    return FEXCore::BitCast<float>(Result);
  }

  double ToF64(softfloat_state* state) const {
    const float64_t Result = extF80_to_f64(state, *this);
-    return std::bit_cast<double>(Result);
+    return FEXCore::BitCast<double>(Result);
  }

  FEXCore::VectorRegType ToVector() const {
@@ -559,7 +514,7 @@ struct FEX_PACKED X80SoftFloat {
  BIGFLOAT ToFMax(softfloat_state* state) const {
 #if BIGFLOATSIZE == 16
    const float128_t Result = extF80_to_f128(state, *this);
-    return std::bit_cast<BIGFLOAT>(Result);
+    return FEXCore::BitCast<BIGFLOAT>(Result);
 #else
    BIGFLOAT result {};
    memcpy(&result, this, sizeof(result));
@@ -618,51 +573,18 @@ struct FEX_PACKED X80SoftFloat {
  }

  X80SoftFloat(softfloat_state* state, const float rhs) {
-    *this = f32_to_extF80(state, std::bit_cast<float32_t>(rhs));
+    *this = f32_to_extF80(state, FEXCore::BitCast<float32_t>(rhs));
  }

  X80SoftFloat(softfloat_state* state, const double rhs) {
-    *this = f64_to_extF80(state, std::bit_cast<float64_t>(rhs));
-  }
-
-  // Create X80SoftFloat from double while preserving NaN signaling properties
-  static X80SoftFloat FromF64_PreserveNaN(softfloat_state* state, double value) {
-    uint64_t bits = std::bit_cast<uint64_t>(value);
-
-    // Check if it's a nan
-    if ((bits & 0x7FF0000000000000ULL) == 0x7FF0000000000000ULL && (bits & 0x000FFFFFFFFFFFFFULL) != 0) {
-
-      X80SoftFloat result;
-      result.Sign = (bits >> 63) & 1;
-      result.Exponent = 0x7FFF;
-
-      bool is_signaling = !(bits & 0x0008000000000000ULL);
-      uint64_t ieee_payload = bits & 0x0007FFFFFFFFFFFFULL;
-
-      // set bit 63 required for x87
-      result.Significand = 0x8000000000000000ULL;
-
-      if (is_signaling) { // clear bit 62 for signaling nan
-        result.Significand &= ~0x4000000000000000ULL;
-      } else { // clear bit 62 for quiet nan
-        result.Significand |= 0x4000000000000000ULL;
-      }
-
-      // ieee754 51-bit payload -> x87 62-bit payload
-      result.Significand |= (ieee_payload << 11) & 0x3FFFFFFFFFFFFFFFULL;
-
-      return result;
-    }
-
-    // For non-NaN values, use standard conversion
-    return X80SoftFloat(state, value);
+    *this = f64_to_extF80(state, FEXCore::BitCast<float64_t>(rhs));
  }

  X80SoftFloat(softfloat_state* state, BIGFLOAT rhs) {
 #if BIGFLOATSIZE == 16
-    *this = f128_to_extF80(state, std::bit_cast<float128_t>(rhs));
+    *this = f128_to_extF80(state, FEXCore::BitCast<float128_t>(rhs));
 #else
-    *this = std::bit_cast<long double>(rhs);
+    *this = FEXCore::BitCast<long double>(rhs);
 #endif
  }

@@ -2,27 +2,74 @@
 #pragma once
 #include <FEXCore/fextl/string.h>

-#include <concepts>
+#include <cstdint>
 #include <string_view>
+#include <optional>

 namespace FEXCore::StrConv {
-template<std::integral T>
-bool Conv(std::string_view Value, T* Result) {
-  if constexpr (std::is_signed_v<T>) {
-    *Result = static_cast<T>(std::strtoll(Value.data(), nullptr, 0));
-  } else {
-    *Result = static_cast<T>(std::strtoull(Value.data(), nullptr, 0));
-  }
+[[maybe_unused]]
+static bool Conv(std::string_view Value, bool* Result) {
+  *Result = std::strtoull(Value.data(), nullptr, 0);
  return true;
 }

-template<typename T, typename = std::enable_if_t<std::is_enum_v<T>, T>>
-bool Conv(std::string_view Value, T* Result) {
-  *Result = static_cast<T>(std::strtoull(Value.data(), nullptr, 0));
+[[maybe_unused]]
+static bool Conv(std::string_view Value, uint8_t* Result) {
+  *Result = std::strtoul(Value.data(), nullptr, 0);
  return true;
 }

-inline bool Conv(std::string_view Value, fextl::string* Result) {
+[[maybe_unused]]
+static bool Conv(std::string_view Value, int8_t* Result) {
+  *Result = std::strtol(Value.data(), nullptr, 0);
+  return true;
+}
+
+[[maybe_unused]]
+static bool Conv(std::string_view Value, uint16_t* Result) {
+  *Result = std::strtoul(Value.data(), nullptr, 0);
+  return true;
+}
+
+[[maybe_unused]]
+static bool Conv(std::string_view Value, int16_t* Result) {
+  *Result = std::strtol(Value.data(), nullptr, 0);
+  return true;
+}
+
+[[maybe_unused]]
+static bool Conv(std::string_view Value, uint32_t* Result) {
+  *Result = std::strtoul(Value.data(), nullptr, 0);
+  return true;
+}
+
+[[maybe_unused]]
+static bool Conv(std::string_view Value, int32_t* Result) {
+  *Result = std::strtol(Value.data(), nullptr, 0);
+  return true;
+}
+
+[[maybe_unused]]
+static bool Conv(std::string_view Value, uint64_t* Result) {
+  *Result = std::strtoull(Value.data(), nullptr, 0);
+  return true;
+}
+
+[[maybe_unused]]
+static bool Conv(std::string_view Value, int64_t* Result) {
+  *Result = std::strtoll(Value.data(), nullptr, 0);
+  return true;
+}
+
+template<typename T, typename = std::enable_if<std::is_enum<T>::value, T>>
+[[maybe_unused]]
+static bool Conv(std::string_view Value, T* Result) {
+  *Result = static_cast<T>(std::stoull(Value.data(), nullptr, 0));
+  return true;
+}
+
+[[maybe_unused]]
+static bool Conv(std::string_view Value, fextl::string* Result) {
  *Result = Value;
  return true;
 }
@@ -4,6 +4,7 @@
      "Multiblock": {
        "Type": "bool",
        "Default": "true",
+        "ShortArg": "m",
        "Desc": [
          "Controls multiblock code compilation",
          "Can cause long JIT compilation times and stutter"
@@ -12,10 +13,22 @@
      "MaxInst": {
        "Type": "int32",
        "Default": "5000",
+        "ShortArg": "n",
        "Desc": [
          "Maximum number of instruction to store in a block"
        ]
      },
+      "CacheObjectCodeCompilation": {
+        "Type": "uint32",
+        "Default": "FEXCore::Config::ConfigObjectCodeHandler::CONFIG_NONE",
+        "TextDefault": "none",
+        "Choices": [ "none", "read", "readwrite" ],
+        "ArgumentHandler": "CacheObjectCodeHandler",
+        "Desc": [
+          "Cache JIT object code to drive.",
+          "Allows JIT code to be shared between applications"
+        ]
+      },
      "HostFeatures": {
        "Type": "strenum",
        "Default": "FEXCore::Config::HostFeatures::OFF",
@@ -57,11 +70,7 @@
          "ENABLEPRESERVEALLABI": "enablepreserveallabi",
          "DISABLEPRESERVEALLABI": "disablepreserveallabi",
          "ENABLEWFXT": "enablewfxt",
-          "DISABLEWFXT": "disablewfxt",
-          "ENABLE3DNOW": "enable3dnow",
-          "DISABLE3DNOW": "disable3dnow",
-          "ENABLESSE4A": "enablesse4a",
-          "DISABLESSE4A": "disablesse4a"
+          "DISABLEWFXT": "disablewfxt"
        },
        "Desc": [
          "Allows controlling of the CPU features in the JIT.",
@@ -83,9 +92,7 @@
          "\t{enable,disable}rpres: Will force enable or disable rpres even if the host doesn't support it",
          "\t{enable,disable}svebitperm: Will force enable or disable svebitperm even if the host doesn't support it",
          "\t{enable,disable}preserveallabi: Will force enable or disable preserve_all abi even if the host doesn't support it",
-          "\t{enable,disable}wfxt: Will force enable or disable wfxt even if the host doesn't support it",
-          "\t{enable,disable}3dnow: Will force enable or disable 3DNow! even if the host doesn't support it",
-          "\t{enable,disable}sse4a: Will force enable or disable SSE4a even if the host doesn't support it"
+          "\t{enable,disable}wfxt: Will force enable or disable wfxt even if the host doesn't support it"
        ]
      },
      "SmallTSCScale": {
@@ -100,6 +107,7 @@
      "RootFS": {
        "Type": "str",
        "Default": "",
+        "ShortArg": "R",
        "Desc": [
          "Which Root filesystem prefix to use",
          "This can be a filesystem path",
@@ -114,6 +122,7 @@
      "ThunkHostLibs": {
        "Type": "str",
        "Default": "@CMAKE_INSTALL_FULL_LIBDIR@/fex-emu/HostThunks",
+        "ShortArg": "t",
        "Desc": [
          "Folder to find the host-side thunking libraries."
        ]
@@ -121,6 +130,7 @@
      "ThunkGuestLibs": {
        "Type": "str",
        "Default": "@CMAKE_INSTALL_PREFIX@/share/fex-emu/GuestThunks",
+        "ShortArg": "j",
        "Desc": [
          "Folder to find the guest-side thunking libraries."
        ]
@@ -128,6 +138,7 @@
      "ThunkConfig": {
        "Type": "str",
        "Default": "",
+        "ShortArg": "k",
        "Desc": [
          "A json file specifying where to overlay the thunks.",
          "This can be a filesystem path",
@@ -142,6 +153,7 @@
      "Env": {
        "Type": "strarray",
        "Default": "",
+        "ShortArg": "E",
        "Desc": [
          "Adds an environment variable to the emulated environment."
        ]
@@ -149,6 +161,7 @@
      "HostEnv": {
        "Type": "strarray",
        "Default": "",
+        "ShortArg": "H",
        "Desc": [
          "Adds an environment variable to the host environment.",
          "This can be useful for setting environment variables that thunks can pick up.",
@@ -167,6 +180,7 @@
      "SingleStep": {
        "Type": "bool",
        "Default": "false",
+        "ShortArg": "S",
        "Desc": [
          "Single stepping configuration."
        ]
@@ -174,6 +188,7 @@
      "GdbServer": {
        "Type": "bool",
        "Default": "false",
+        "ShortArg": "G",
        "Desc": [
          "Enables the GDB server."
        ]
@@ -207,6 +222,7 @@
      "DumpGPRs": {
        "Type": "bool",
        "Default": "false",
+        "ShortArg": "g",
        "Desc": [
          "When the test harness ends, print the GPR state."
        ]
@@ -214,6 +230,7 @@
      "O0": {
        "Type": "bool",
        "Default": "false",
+        "ShortArg": "O0",
        "Desc": [
          "Disables optimizations passes for debugging."
        ]
@@ -303,6 +320,7 @@
      "SilentLog": {
        "Type": "bool",
        "Default": "true",
+        "ShortArg": "s",
        "Desc": [
          "Disables logging"
        ]
@@ -310,6 +328,7 @@
      "OutputLog": {
        "Type": "str",
        "Default": "server",
+        "ShortArg": "o",
        "Desc": [
          "File to write FEX output to.",
          "[stdout, stderr, server, <Filename>]"
@@ -384,6 +403,14 @@
          "This is required to ensure a split-lock doesn't tear inside the process"
        ]
      },
+      "TSOAutoMigration": {
+        "Type": "bool",
+        "Default": "true",
+        "Desc": [
+          "Automatically enables TSO when shared memory is used.",
+          "Should work without issues in most cases."
+        ]
+      },
      "VolatileMetadata": {
        "Type": "bool",
        "Default": "true",
@@ -399,14 +426,6 @@
          "Emulates X87 floating point using 64-bit precision. This reduces emulation accuracy and may result in rendering bugs."
        ]
      },
-      "X87StrictReducedPrecision": {
-        "Type": "bool",
-        "Default": "false",
-        "Desc": [
-          "Enables stricter X87 floating point behavior when X87ReducedPrecision is enabled.",
-          "Adds additional checks and implementations like NaN propagation for better compatibility."
-        ]
-      },
      "ABILocalFlags": {
        "Type": "bool",
        "Default": "false",
@@ -454,16 +473,32 @@
        "Desc": [
          "Contrains the startup sleep to only apply to processes that match this name."
        ]
-      },
-      "MonoHacks": {
-        "Type": "bool",
-        "Default": "true",
-        "Desc": [
-          "Permits a hook-based SMC approach and smaller JIT blocks when mono is detected."
-        ]
      }
    },
    "Misc": {
+      "AOTIRCapture": {
+        "Type": "bool",
+        "Default": "false",
+        "Desc": [
+          "Captures IR and generates an AOT IR cache.",
+          "Captures both the loaded executable and libraries it loads."
+        ]
+      },
+      "AOTIRGenerate": {
+        "Type": "bool",
+        "Default": "false",
+        "Desc": [
+          "Scans file for executable code and generates an AOT IR cache.",
+          "Does not run the executable."
+        ]
+      },
+      "AOTIRLoad": {
+        "Type": "bool",
+        "Default": "false",
+        "Desc": [
+          "Loads an AOT IR cache for the loaded executable."
+        ]
+      },
      "ServerSocketPath": {
        "Type": "str",
        "Default": "",
@@ -477,32 +512,15 @@
        "Desc": [
          "Disables inline syscalls in order to support seccomp handling"
        ]
-      },
-      "ExtendedVolatileMetadata": {
-        "Type": "str",
-        "Default": "",
-        "Desc": [
-          "Configuration provided volatile metadata. Only implemented for WoW64/arm64ec.",
-          "Limited in its use but can be handy.",
-          "Extends on top of what Microsoft has for volatile metadata, but also supported for WoW64.",
-          "Colon delimited modules, then semi-colon delimited instructions, then comma delimited ranges",
-          "Default disables TSO in the module, unless instructions overlap the range",
-          "<module>;<offset begin>-<offset-end>,...;<instruction offset to force TSO>,...:<another>",
-          "examples:",
-          "  * Disable TSO for a full module: Just provide the module name:",
-          "      `hl2_linux`",
-          "  * Disable TSO for a part of the module:",
-          "      `hl2_linux;<offset begin>-<offset-end>`",
-          "  * Disable TSO for a part of the module, but enable TSO for some instructions within the module",
-          "      `hl2_linux;<offset begin>-<offset-end>;<instruction offset>,<instruction offset>`",
-          "  * Disable TSO for multiple modules",
-          "      `hl2_linux:libsdl2.so`"
-        ]
      }
    }
  },
  "UnnamedOptions": {
    "Misc": {
+      "IS_INTERPRETER": {
+        "Type": "bool",
+        "Default": "false"
+      },
      "INTERPRETER_INSTALLED": {
        "Type": "bool",
        "Default": "false"
@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: MIT
 #include "Interface/Context/Context.h"
 #include "Interface/Core/OpcodeDispatcher.h"
-#include "Interface/Core/Dispatcher/Dispatcher.h"
 #include "Interface/Core/X86Tables/X86Tables.h"

 #include <FEXCore/Core/CoreState.h>
@@ -9,12 +8,18 @@
 #include <FEXCore/Core/CPUID.h>
 #include <FEXCore/Core/HostFeatures.h>
 #include <FEXCore/Core/SignalDelegator.h>
-#include <FEXCore/HLE/SyscallHandler.h>
-
 #include <FEXCore/Core/Thunks.h>
 #include "FEXCore/Debug/InternalThreadState.h"

+#include <string.h>
+#include <utility>
+
 namespace FEXCore::Context {
+void InitializeStaticTables(OperatingMode Mode) {
+  X86Tables::InitializeInfoTables(Mode);
+  IR::InstallOpcodeHandlers(Mode);
+}
+
 fextl::unique_ptr<FEXCore::Context::Context> FEXCore::Context::Context::CreateNewContext(const FEXCore::HostFeatures& Features) {
  return fextl::make_unique<FEXCore::Context::ContextImpl>(Features);
 }
@@ -2,49 +2,61 @@
 #pragma once

 #include "Common/JitSymbols.h"
-#include "Interface/Core/CPUBackend.h"
 #include "Interface/Core/CPUID.h"
 #include "Interface/Core/X86HelperGen.h"
-#include <Interface/IR/IntrusiveIRList.h>
+#include "Interface/Core/ObjectCache/ObjectCacheService.h"
+#include "Interface/Core/Dispatcher/Dispatcher.h"
+#include "Interface/IR/AOTIR.h"
 #include <FEXCore/Config/Config.h>
 #include <FEXCore/Core/Context.h>
 #include <FEXCore/Core/CoreState.h>
 #include <FEXCore/Core/HostFeatures.h>
+#include <FEXCore/Core/SignalDelegator.h>
+#include <FEXCore/Debug/InternalThreadState.h>
 #include <FEXCore/IR/IR.h>
 #include <FEXCore/Utils/CompilerDefs.h>
+#include <FEXCore/Utils/Event.h>
 #include <FEXCore/Utils/SignalScopeGuards.h>
 #include <FEXCore/fextl/memory.h>
 #include <FEXCore/fextl/set.h>
 #include <FEXCore/fextl/string.h>
 #include <FEXCore/fextl/unordered_map.h>
 #include <FEXCore/fextl/vector.h>
+#include <FEXHeaderUtils/Syscalls.h>
+#include <stdint.h>

 #include <atomic>
-#include <cstddef>
-#include <cstdint>
 #include <mutex>
-#include <optional>
 #include <shared_mutex>

 namespace FEXCore {
-class SignalDelegator;
+class CodeLoader;
 class ThunkHandler;

-namespace Core {
-  struct DebugData;
-  struct InternalThreadState;
-} // namespace Core
+namespace CodeSerialize {
+  class CodeObjectSerializeService;
+}

 namespace CPU {
+  class Arm64JITCore;
  class Dispatcher;
 } // namespace CPU
-
 namespace HLE {
-  class SourcecodeResolver;
+  struct SyscallArguments;
  class SyscallHandler;
+  class SourcecodeResolver;
+  struct SourcecodeMap;
 } // namespace HLE
 } // namespace FEXCore

+namespace FEXCore::IR {
+struct IRListCopy;
+class IRListView;
+namespace Validation {
+  class IRValidation;
+}
+} // namespace FEXCore::IR
+
 namespace FEXCore::Context {
 struct FEX_PACKED ExitFunctionLinkData {
  uint64_t HostCode;
@@ -64,23 +76,7 @@ struct CustomIRResult {
 using BlockDelinkerFunc = void (*)(FEXCore::Core::CpuStateFrame* Frame, FEXCore::Context::ExitFunctionLinkData* Record);
 constexpr uint32_t TSC_SCALE_MAXIMUM = 1'000'000'000; ///< 1Ghz

-class CodeCache : public AbstractCodeCache {
-public:
-  CodeCache(ContextImpl&);
-  ~CodeCache();
-
-  ContextImpl& CTX;
-  bool IsGeneratingCache = false;
-
-  void LoadData(Core::InternalThreadState&, std::byte* MappedCacheFile, const ExecutableFileSectionInfo&) override;
-  bool SaveData(Core::InternalThreadState&, int TargetFD, const ExecutableFileSectionInfo&, uint64_t SerializedBaseAddress) override;
-
-  void InitiateCacheGeneration() override {
-    IsGeneratingCache = true;
-  }
-};
-
-class ContextImpl final : public FEXCore::Context::Context, public CPU::CodeBufferManager {
+class ContextImpl final : public FEXCore::Context::Context, CPU::CodeBufferManager {
 public:
  // Context base class implementation.
  bool InitCore() override;
@@ -94,7 +90,6 @@ public:

  bool IsAddressInCurrentBlock(FEXCore::Core::InternalThreadState* Thread, uint64_t Address, uint64_t Size) override;
  bool IsCurrentBlockSingleInst(FEXCore::Core::InternalThreadState* Thread) override;
-  uint64_t GetGuestBlockEntry(FEXCore::Core::InternalThreadState* Thread) override;

  uint64_t RestoreRIPFromHostPC(FEXCore::Core::InternalThreadState* Thread, uint64_t HostPC) override;
  uint32_t ReconstructCompactedEFLAGS(FEXCore::Core::InternalThreadState* Thread, bool WasInJIT, const uint64_t* HostGPRs, uint64_t PSTATE) override;
@@ -150,8 +145,24 @@ public:
  FEXCore::CPUID::XCRResults RunXCRFunction(uint32_t Function) override;
  FEXCore::CPUID::FunctionResults RunCPUIDFunctionName(uint32_t Function, uint32_t Leaf, uint32_t CPU) override;

-  CodeCache& GetCodeCache() override {
-    return CodeCache;
+  FEXCore::IR::AOTIRCacheEntry* LoadAOTIRCacheEntry(const fextl::string& Name) override;
+  void UnloadAOTIRCacheEntry(FEXCore::IR::AOTIRCacheEntry* Entry) override;
+
+  void SetAOTIRLoader(AOTIRLoaderCBFn CacheReader) override {
+    IRCaptureCache.SetAOTIRLoader(std::move(CacheReader));
+  }
+  void SetAOTIRWriter(AOTIRWriterCBFn CacheWriter) override {
+    IRCaptureCache.SetAOTIRWriter(std::move(CacheWriter));
+  }
+  void SetAOTIRRenamer(AOTIRRenamerCBFn CacheRenamer) override {
+    IRCaptureCache.SetAOTIRRenamer(std::move(CacheRenamer));
+  }
+
+  void FinalizeAOTIRCache() override {
+    IRCaptureCache.FinalizeAOTIRCache();
+  }
+  void WriteFilesWithCode(AOTIRCodeFileWriterFn Writer) override {
+    IRCaptureCache.WriteFilesWithCode(Writer);
  }

  void OnCodeBufferAllocated(CPU::CodeBuffer&) override;
@@ -162,6 +173,8 @@ public:
    return CodeInvalidationMutex;
  }

+  void MarkMemoryShared(FEXCore::Core::InternalThreadState* Thread) override;
+
  void ConfigureAOTGen(FEXCore::Core::InternalThreadState* Thread, fextl::set<uint64_t>* ExternalBranches, uint64_t SectionMaxAddress) override;

  bool IsAddressInCodeBuffer(FEXCore::Core::InternalThreadState* Thread, uintptr_t Address) const override;
@@ -176,13 +189,14 @@ public:

  void RemoveForceTSOInformation(uint64_t Address, uint64_t Size) override;

-  void MarkMonoDetected() override {
-    MonoDetected = true;
-  }
-
-  void MarkMonoBackpatcherBlock(uint64_t BlockEntry) override;
-
 public:
+  friend class FEXCore::HLE::SyscallHandler;
+#ifdef JIT_ARM64
+  friend class FEXCore::CPU::Arm64JITCore;
+#endif
+
+  friend class FEXCore::IR::Validation::IRValidation;
+
  struct {
    uint64_t VirtualMemSize {1ULL << 36};
    uint64_t TSCScale = 0;
@@ -195,9 +209,13 @@ public:
    FEX_CONFIG_OPT(GdbServer, GDBSERVER);
    FEX_CONFIG_OPT(Is64BitMode, IS64BIT_MODE);
    FEX_CONFIG_OPT(TSOEnabled, TSOENABLED);
+    FEX_CONFIG_OPT(TSOAutoMigration, TSOAUTOMIGRATION);
    FEX_CONFIG_OPT(VectorTSOEnabled, VECTORTSOENABLED);
    FEX_CONFIG_OPT(MemcpySetTSOEnabled, MEMCPYSETTSOENABLED);
    FEX_CONFIG_OPT(ABILocalFlags, ABILOCALFLAGS);
+    FEX_CONFIG_OPT(AOTIRCapture, AOTIRCAPTURE);
+    FEX_CONFIG_OPT(AOTIRGenerate, AOTIRGENERATE);
+    FEX_CONFIG_OPT(AOTIRLoad, AOTIRLOAD);
    FEX_CONFIG_OPT(SMCChecks, SMCCHECKS);
    FEX_CONFIG_OPT(MaxInstPerBlock, MAXINST);
    FEX_CONFIG_OPT(RootFSPath, ROOTFS);
@@ -206,13 +224,12 @@ public:
    FEX_CONFIG_OPT(BlockJITNaming, BLOCKJITNAMING);
    FEX_CONFIG_OPT(GDBSymbols, GDBSYMBOLS);
    FEX_CONFIG_OPT(ParanoidTSO, PARANOIDTSO);
+    FEX_CONFIG_OPT(CacheObjectCodeCompilation, CACHEOBJECTCODECOMPILATION);
    FEX_CONFIG_OPT(x87ReducedPrecision, X87REDUCEDPRECISION);
-    FEX_CONFIG_OPT(x87StrictReducedPrecision, X87STRICTREDUCEDPRECISION);
    FEX_CONFIG_OPT(DisableTelemetry, DISABLETELEMETRY);
    FEX_CONFIG_OPT(DisableVixlIndirectCalls, DISABLE_VIXL_INDIRECT_RUNTIME_CALLS);
    FEX_CONFIG_OPT(SmallTSCScale, SMALLTSCSCALE);
    FEX_CONFIG_OPT(StrictInProcessSplitLocks, STRICTINPROCESSSPLITLOCKS);
-    FEX_CONFIG_OPT(MonoHacks, MONOHACKS);
  } Config;

  FEXCore::ForkableSharedMutex CodeInvalidationMutex;
@@ -226,23 +243,29 @@ public:
  FEXCore::HLE::SourcecodeResolver* SourcecodeResolver {};
  FEXCore::ThunkHandler* ThunkHandler {};
  fextl::unique_ptr<FEXCore::CPU::Dispatcher> Dispatcher;
-  CodeCache CodeCache;

  SignalDelegator* SignalDelegation {};
  X86GeneratedCode X86CodeGen;

  ContextImpl(const FEXCore::HostFeatures& Features);
+  ~ContextImpl();

  static bool ThreadRemoveCodeEntry(FEXCore::Core::InternalThreadState* Thread, uint64_t GuestRIP);

-  static void ThreadRemoveCodeEntryFromJit(FEXCore::Core::CpuStateFrame* Frame, uint64_t GuestRIP);
+  // Wrapper which takes CpuStateFrame instead of InternalThreadState and unique_locks CodeInvalidationMutex
+  // Must be called from owning thread
+  static void ThreadRemoveCodeEntryFromJit(FEXCore::Core::CpuStateFrame* Frame, uint64_t GuestRIP) {
+    auto Thread = Frame->Thread;
+    auto lk = GuardSignalDeferringSection(static_cast<ContextImpl*>(Thread->CTX)->CodeInvalidationMutex, Thread);

-  // This is used as a replacement for the SMC writes in the mono callsite backpatcher that avoids atomic operations
-  // (safe as the invalidation mutex is locked) and manually invalidates the modified range. Allowing SMC to be detected
-  // even if faulting is disabled.
-  static void MonoBackpatcherWrite(FEXCore::Core::CpuStateFrame* Frame, uint8_t Size, uint64_t Address, uint64_t Value);
+    // NOTE: Other threads sharing the same CodeBuffer may reference
+    //       invalidated data ranges through their L1/L2 caches. This is
+    //       not currently a problem since FEX does not repurpose the
+    //       invalidated CodeBuffer memory range currently.
+    ThreadRemoveCodeEntry(Thread, GuestRIP);
+  }

-  void RemoveCustomIREntrypoint(FEXCore::Core::InternalThreadState* Thread, uintptr_t Entrypoint);
+  void RemoveCustomIREntrypoint(uintptr_t Entrypoint);

  struct GenerateIRResult {
    std::optional<IR::IRListView> IRView;
@@ -301,10 +324,6 @@ public:
    return ExitOnHLT;
  }

-  bool AreMonoHacksActive() const {
-    return Config.MonoHacks && MonoDetected;
-  }
-
 protected:
  void UpdateAtomicTSOEmulationConfig() {
    if (SupportsHardwareTSO) {
@@ -317,16 +336,12 @@ protected:
      VectorAtomicTSOEmulationEnabled = true;
      MemcpyAtomicTSOEmulationEnabled = true;
    } else {
-      AtomicTSOEmulationEnabled = Config.TSOEnabled;
-      VectorAtomicTSOEmulationEnabled = Config.TSOEnabled && Config.VectorTSOEnabled;
-      MemcpyAtomicTSOEmulationEnabled = Config.TSOEnabled && Config.MemcpySetTSOEnabled;
-    }
-  }
-
-  void UpdateX87PrecisionConfig() {
-    // If strict reduced precision is enabled, automatically enable reduced precision
-    if (Config.x87StrictReducedPrecision() && !Config.x87ReducedPrecision()) {
-      FEXCore::Config::Set(FEXCore::Config::CONFIG_X87REDUCEDPRECISION, "1");
+      // Atomic TSO emulation only enabled if the config option is enabled.
+      AtomicTSOEmulationEnabled = (IsMemoryShared || !Config.TSOAutoMigration) && Config.TSOEnabled;
+      // Atomic vector TSO emulation only enabled if TSO emulation is enabled and also vector TSO is enabled.
+      VectorAtomicTSOEmulationEnabled = (IsMemoryShared || !Config.TSOAutoMigration) && Config.TSOEnabled && Config.VectorTSOEnabled;
+      // Atomic memcpy TSO emulation only enabled if TSO emulation is enabled and also memcpy TSO is enabled.
+      MemcpyAtomicTSOEmulationEnabled = (IsMemoryShared || !Config.TSOAutoMigration) && Config.TSOEnabled && Config.MemcpySetTSOEnabled;
    }
  }

@@ -340,6 +355,10 @@ private:
   */
  void InitializeCompiler(FEXCore::Core::InternalThreadState* Thread);

+  IR::AOTIRCaptureCache IRCaptureCache;
+  fextl::unique_ptr<FEXCore::CodeSerialize::CodeObjectSerializeService> CodeObjectCacheService;
+
+  bool IsMemoryShared = false;
  bool SupportsHardwareTSO = false;
  bool AtomicTSOEmulationEnabled = true;
  bool VectorAtomicTSOEmulationEnabled = false;
@@ -352,14 +371,11 @@ private:
  std::atomic<bool> HasCustomIRHandlers {};
  struct CustomIRHandlerEntry final {
    CustomIREntrypointHandler Handler;
-    void* Creator;
-    void* Data;
+    void *Creator;
+    void *Data;
  };
  fextl::unordered_map<uint64_t, CustomIRHandlerEntry> CustomIRHandlers;
  IntervalList<uint64_t> ForceTSOValidRanges; // The ranges for which ForceTSOInstructions has populated data
  fextl::set<uint64_t> ForceTSOInstructions;
-
-  bool MonoDetected = false;
-  std::atomic<uint64_t> MonoBackpatcherBlock;
 };
 } // namespace FEXCore::Context
@@ -7,11 +7,12 @@

 namespace FEXCore::IR {

-Ref LoadEffectiveAddress(IREmitter* IREmit, const AddressMode& A, IR::OpSize GPRSize, bool AddSegmentBase, bool AllowUpperGarbage) {
+Ref LoadEffectiveAddress(IREmitter* IREmit, AddressMode A, IR::OpSize GPRSize, bool AddSegmentBase, bool AllowUpperGarbage) {
  Ref Tmp = A.Base;

  if (A.Offset) {
-    Tmp = Tmp ? IREmit->Add(GPRSize, Tmp, A.Offset) : IREmit->Constant(A.Offset);
+    Ref Offset = IREmit->Constant(A.Offset);
+    Tmp = Tmp ? IREmit->_Add(GPRSize, Tmp, Offset) : Offset;
  }

  if (A.Index) {
@@ -24,7 +25,7 @@ Ref LoadEffectiveAddress(IREmitter* IREmit, const AddressMode& A, IR::OpSize GPR
        Tmp = IREmit->_Lshl(GPRSize, A.Index, IREmit->Constant(Log2));
      }
    } else {
-      Tmp = Tmp ? IREmit->Add(GPRSize, Tmp, A.Index) : A.Index;
+      Tmp = Tmp ? IREmit->_Add(GPRSize, Tmp, A.Index) : A.Index;
    }
  }

@@ -45,23 +46,27 @@ Ref LoadEffectiveAddress(IREmitter* IREmit, const AddressMode& A, IR::OpSize GPR
  }

  if (A.Segment && AddSegmentBase) {
-    Tmp = Tmp ? IREmit->Add(GPRSize, Tmp, A.Segment) : A.Segment;
+    Tmp = Tmp ? IREmit->_Add(GPRSize, Tmp, A.Segment) : A.Segment;
  }

  return Tmp ?: IREmit->Constant(0);
 }

-AddressMode SelectAddressMode(IREmitter* IREmit, const AddressMode& A, IR::OpSize GPRSize, bool HostSupportsTSOImm9, bool AtomicTSO,
-                              bool Vector, IR::OpSize AccessSize) {
+AddressMode SelectAddressMode(IREmitter* IREmit, AddressMode A, IR::OpSize GPRSize, bool HostSupportsTSOImm9, bool AtomicTSO, bool Vector,
+                              IR::OpSize AccessSize) {
+  auto SoftwareAddressCalculation = [IREmit, &A, GPRSize]() -> AddressMode {
+    return {
+      .Base = LoadEffectiveAddress(IREmit, A, GPRSize, true),
+      .Index = IREmit->Invalid(),
+    };
+  };
+
  const auto Is32Bit = GPRSize == OpSize::i32Bit;
  const auto GPRSizeMatchesAddrSize = A.AddrSize == GPRSize;
  const auto OffsetIndexToLargeFor32Bit = Is32Bit && (A.Offset <= -16384 || A.Offset >= 16384);
  if (!GPRSizeMatchesAddrSize || OffsetIndexToLargeFor32Bit) {
    // If address size doesn't match GPR size then no optimizations can occur.
-    return {
-      .Base = LoadEffectiveAddress(IREmit, A, GPRSize, true),
-      .Index = IREmit->Invalid(),
-    };
+    return SoftwareAddressCalculation();
  }

  // Loadstore rules:
@@ -95,7 +100,7 @@ AddressMode SelectAddressMode(IREmitter* IREmit, const AddressMode& A, IR::OpSiz
  const bool OffsetIsSIMM9 = A.Offset && A.Offset >= -256 && A.Offset <= 255;
  const bool OffsetIsUnsignedScaled = A.Offset > 0 && (A.Offset & (AccessSizeAsImm - 1)) == 0 && (A.Offset / AccessSizeAsImm) <= 4095;

-  if ((AtomicTSO && !Vector && HostSupportsTSOImm9 && OffsetIsSIMM9) || (!AtomicTSO && (OffsetIsSIMM9 || OffsetIsUnsignedScaled))) {
+  auto InlineImmOffsetLoadstore = [IREmit, &GPRSize](AddressMode A) -> AddressMode {
    // Peel off the offset
    AddressMode B = A;
    B.Offset = 0;
@@ -103,25 +108,35 @@ AddressMode SelectAddressMode(IREmitter* IREmit, const AddressMode& A, IR::OpSiz
    return {
      .Base = LoadEffectiveAddress(IREmit, B, GPRSize, true /* AddSegmentBase */, false),
      .Index = IREmit->Constant(A.Offset),
-      .IndexType = MemOffsetType::SXTX,
+      .IndexType = MEM_OFFSET_SXTX,
      .IndexScale = 1,
    };
-  }
+  };
+
+  auto ScaledRegisterLoadstore = [IREmit, GPRSize](AddressMode A) -> AddressMode {
+    if (A.Index && A.Segment) {
+      A.Base = IREmit->_Add(GPRSize, A.Base, A.Segment);
+    } else if (A.Segment) {
+      A.Index = A.Segment;
+      A.IndexScale = 1;
+    }
+    return A;
+  };

  if (AtomicTSO) {
-    // TODO: LRCPC3 support for vector Imm9.
-  } else if (!Is32Bit && A.Base && (A.Index || A.Segment) && !A.Offset && (A.IndexScale == 1 || A.IndexScale == AccessSizeAsImm)) {
-    AddressMode B = A;
-
-    // ScaledRegisterLoadstore
-    if (B.Index && B.Segment) {
-      B.Base = IREmit->Add(GPRSize, B.Base, B.Segment);
-    } else if (B.Segment) {
-      B.Index = B.Segment;
-      B.IndexScale = 1;
+    if (!Vector) {
+      if (HostSupportsTSOImm9 && OffsetIsSIMM9) {
+        return InlineImmOffsetLoadstore(A);
+      }
+    } else {
+      // TODO: LRCPC3 support for vector Imm9.
+    }
+  } else {
+    if (OffsetIsSIMM9 || OffsetIsUnsignedScaled) {
+      return InlineImmOffsetLoadstore(A);
+    } else if (!Is32Bit && A.Base && (A.Index || A.Segment) && !A.Offset && (A.IndexScale == 1 || A.IndexScale == AccessSizeAsImm)) {
+      return ScaledRegisterLoadstore(A);
    }
-
-    return B;
  }

  if (Vector || !AtomicTSO) {
@@ -136,7 +151,7 @@ AddressMode SelectAddressMode(IREmitter* IREmit, const AddressMode& A, IR::OpSiz
        return {
          .Base = LoadEffectiveAddress(IREmit, B, GPRSize, true /* AddSegmentBase */, false),
          .Index = IREmit->Constant(A.Offset),
-          .IndexType = MemOffsetType::SXTX,
+          .IndexType = MEM_OFFSET_SXTX,
          .IndexScale = 1,
        };
      }
@@ -144,10 +159,7 @@ AddressMode SelectAddressMode(IREmitter* IREmit, const AddressMode& A, IR::OpSiz
  }

  // Fallback on software address calculation
-  return {
-    .Base = LoadEffectiveAddress(IREmit, A, GPRSize, true),
-    .Index = IREmit->Invalid(),
-  };
+  return SoftwareAddressCalculation();
 }


@@ -11,18 +11,17 @@ struct AddressMode {
  Ref Segment {nullptr};
  Ref Base {nullptr};
  Ref Index {nullptr};
-  int64_t Offset = 0;
-
-  MemOffsetType IndexType = MemOffsetType::SXTX;
+  MemOffsetType IndexType = MEM_OFFSET_SXTX;
  uint8_t IndexScale = 1;
+  int64_t Offset = 0;

  // Size in bytes for the address calculation. 8 for an arm64 hardware mode.
  IR::OpSize AddrSize;
  bool NonTSO;
 };

-Ref LoadEffectiveAddress(IREmitter* IREmit, const AddressMode& A, IR::OpSize GPRSize, bool AddSegmentBase, bool AllowUpperGarbage = false);
-AddressMode SelectAddressMode(IREmitter* IREmit, const AddressMode& A, IR::OpSize GPRSize, bool HostSupportsTSOImm9, bool AtomicTSO,
-                              bool Vector, IR::OpSize AccessSize);
+Ref LoadEffectiveAddress(IREmitter* IREmit, AddressMode A, IR::OpSize GPRSize, bool AddSegmentBase, bool AllowUpperGarbage = false);
+AddressMode SelectAddressMode(IREmitter* IREmit, AddressMode A, IR::OpSize GPRSize, bool HostSupportsTSOImm9, bool AtomicTSO, bool Vector,
+                              IR::OpSize AccessSize);

-} // namespace FEXCore::IR
+}; // namespace FEXCore::IR
@@ -1,10 +1,10 @@
 // SPDX-License-Identifier: MIT
 #include "Interface/Core/ArchHelpers/Arm64Emitter.h"
+#include "FEXCore/Core/X86Enums.h"
 #include "Interface/Core/Dispatcher/Dispatcher.h"
 #include "Interface/Context/Context.h"

 #include <FEXCore/Core/CoreState.h>
-#include <FEXCore/Core/X86Enums.h>
 #include <FEXCore/Utils/LogManager.h>
 #include <FEXCore/Utils/MathUtils.h>

@@ -712,7 +712,7 @@ void Arm64Emitter::SpillStaticRegs(ARMEmitter::Register TmpReg, bool FPRs, uint3
  // Now handle PF/AF
  if (PFAFSpillMask) {
    auto PFOffset = offsetof(FEXCore::Core::CpuStateFrame, State.pf_raw);
-    auto AFOffset = offsetof(FEXCore::Core::CpuStateFrame, State.af_raw);
+    [[maybe_unused]] auto AFOffset = offsetof(FEXCore::Core::CpuStateFrame, State.af_raw);
    LOGMAN_THROW_A_FMT(PFAFSpillMask == PFAFMask, "PF/AF not spilled together");
    LOGMAN_THROW_A_FMT(AFOffset == PFOffset + 4, "PF/AF are together");

@@ -1,31 +1,30 @@
 // SPDX-License-Identifier: MIT
 #pragma once

+#include "FEXCore/Utils/EnumUtils.h"
+#include "Interface/Core/ObjectCache/Relocations.h"
+
 #ifdef VIXL_DISASSEMBLER
 #include <aarch64/disasm-aarch64.h>
-#include <FEXCore/Config/Config.h>
-#include <FEXCore/fextl/memory.h>
-#include <FEXCore/fextl/vector.h>
 #endif
 #ifdef VIXL_SIMULATOR
 #include <aarch64/simulator-aarch64.h>
 #include <aarch64/simulator-constants-aarch64.h>
 #endif

+#include <FEXCore/Core/X86Enums.h>
+#include <FEXCore/Config/Config.h>
+#include <FEXCore/fextl/vector.h>
 #include <CodeEmitter/Emitter.h>
 #include <CodeEmitter/Registers.h>

 #include <cstddef>
 #include <cstdint>
-#include <optional>
 #include <span>

 namespace FEXCore::Context {
 class ContextImpl;
 }
-namespace FEXCore::X86State {
-enum X86Reg : uint32_t;
-}

 namespace FEXCore::CPU {
 // Contains the address to the currently available CPU state
@@ -1,17 +1,14 @@
 // SPDX-License-Identifier: MIT
+#include "FEXCore/IR/IR.h"
+#include "FEXCore/Utils/AllocatorHooks.h"
 #include "Interface/Context/Context.h"
 #include "Interface/Core/CPUBackend.h"
-#include "Interface/Core/LookupCache.h"
 #include "Interface/Core/Dispatcher/Dispatcher.h"
-
-#include <FEXCore/IR/IR.h>
-#include <FEXCore/Utils/AllocatorHooks.h>
-#include <FEXCore/Utils/PrctlUtils.h>
-
 #include <cstdint>

+#include "LookupCache.h"
+
 #ifndef _WIN32
-#include <linux/prctl.h>
 #include <sys/prctl.h>
 #endif

@@ -320,7 +317,7 @@ namespace CPU {
    // Resize the code buffer and reallocate our code size
    CurrentCodeBuffer = CodeBuffers.StartLargerCodeBuffer();

-    RegisterForSignalHandler(std::move(PrevCodeBuffer));
+    RegisterForSignalHandler(PrevCodeBuffer);
    return CurrentCodeBuffer.get();
  }

@@ -329,13 +326,14 @@ namespace CPU {
      // We have signal handlers that have generated code
      // This means that we can not safely clear the code at this point in time
      // Keep a reference to the old code buffer to delay deallocation
-      SignalHandlerCodeBuffers.push_back(std::move(CodeBuffer));
+      SignalHandlerCodeBuffers.push_back(CodeBuffer);
    } else {
      SignalHandlerCodeBuffers.clear();
    }
  }

  fextl::shared_ptr<CodeBuffer> CPUBackend::CheckCodeBufferUpdate() {
+    fextl::shared_ptr<CodeBuffer> OldCodeBuffer;
    auto NewCodeBuffer = CodeBuffers.GetLatest();
    if (CurrentCodeBuffer != NewCodeBuffer) {
      RegisterForSignalHandler(CurrentCodeBuffer);
@@ -360,10 +358,6 @@ namespace CPU {
      LogMan::Msg::EFmt("Failed to mprotect last page of code buffer.");
    }

-#ifndef _WIN32
-    prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, Ptr, Size, "FEXMemJIT");
-#endif
-
    LookupCache = fextl::make_unique<GuestToHostMap>();
  }

@@ -17,10 +17,6 @@ $end_info$

 #include <cstdint>

-namespace FEXCore::CPU {
-union Relocation;
-}
-
 namespace FEXCore {

 namespace IR {
@@ -161,7 +157,18 @@ namespace CPU {
    virtual CompiledCode CompileCode(uint64_t Entry, uint64_t Size, bool SingleInst, const FEXCore::IR::IRListView* IR,
                                     FEXCore::Core::DebugData* DebugData, bool CheckTF) = 0;

-    virtual fextl::vector<FEXCore::CPU::Relocation> TakeRelocations() = 0;
+    /**
+     * @brief Relocates a block of code from the JIT code object cache
+     *
+     * @param Entry - RIP of the entry
+     * @param SerializationData - Serialization data referring to the object cache for `Entry`
+     *
+     * @return An executable function pointer relocated from the cache object
+     */
+    [[nodiscard]]
+    virtual void* RelocateJITObjectCode(uint64_t /* Entry */, const CodeSerialize::CodeObjectFileSection* /* SerializationData */) {
+      return nullptr;
+    }

    virtual void ClearCache() {}

@@ -43,15 +43,12 @@ namespace ProductNames {
  static const char ARM_A715[] = "Cortex-A715";
  static const char ARM_A720[] = "Cortex-A720";
  static const char ARM_A725[] = "Cortex-A725";
-  static const char ARM_C1Pro[] = "C1-Pro";
-  static const char ARM_C1Premium[] = "C1-Premium";
  static const char ARM_X1[] = "Cortex-X1";
  static const char ARM_X1C[] = "Cortex-X1C";
  static const char ARM_X2[] = "Cortex-X2";
  static const char ARM_X3[] = "Cortex-X3";
  static const char ARM_X4[] = "Cortex-X4";
  static const char ARM_X925[] = "Cortex-X925";
-  static const char ARM_C1Ultra[] = "C1-Ultra";
  static const char ARM_N1[] = "Neoverse N1";
  static const char ARM_N2[] = "Neoverse N2";
  static const char ARM_N3[] = "Neoverse N3";
@@ -62,7 +59,6 @@ namespace ProductNames {
  static const char ARM_A65[] = "Cortex-A65";
  static const char ARM_A510[] = "Cortex-A510";
  static const char ARM_A520[] = "Cortex-A520";
-  static const char ARM_C1Nano[] = "C1-Nano";

  static const char ARM_Kryo200[] = "Kryo 2xx";
  static const char ARM_Kryo300[] = "Kryo 3xx";
@@ -74,7 +70,6 @@ namespace ProductNames {

  static const char ARM_Denver[] = "Nvidia Denver";
  static const char ARM_Carmel[] = "Nvidia Carmel";
-  static const char ARM_Olympus[] = "Nvidia Olympus";

  static const char ARM_Firestorm_M1[] = "Apple Firestorm (M1)";
  static const char ARM_Icestorm_M1[] = "Apple Icestorm (M1)";
@@ -90,9 +85,6 @@ namespace ProductNames {
  static const char ARM_Blizzard_M2Max[] = "Apple Blizzard (M2 Max)";

  static const char ARM_ORYON_1[] = "Oryon-1";
-  static const char ARM_Ampere_1[] = "AmpereOne";
-  static const char ARM_Ampere_1A[] = "AmpereOneA";
-  static const char ARM_Ampere_1B[] = "AmpereOneB";
 #else
 #endif
 } // namespace ProductNames
@@ -178,7 +170,7 @@ void CPUIDEmu::SetupHostHybridFlag() {
  // CPU priority order
  // This is mostly arbitrary but will sort by some sort of CPU priority by performance
  // Relative list so things they will commonly end up in big.little configurations sort of relate
-  static constexpr std::array<CPUMIDR, 66> CPUMIDRs = {{
+  static constexpr std::array<CPUMIDR, 58> CPUMIDRs = {{
    // Typically big CPU cores
    {0x51, 0x001, 1, ProductNames::ARM_ORYON_1}, // Qualcomm Oryon-1

@@ -189,46 +181,38 @@ void CPUIDEmu::SetupHostHybridFlag() {
    {0x61, 0x025, 1, ProductNames::ARM_Firestorm_M1Pro}, // Apple Firestorm (M1 Pro)
    {0x61, 0x023, 1, ProductNames::ARM_Firestorm_M1},    // Apple Firestorm (M1)

-    {0x41, 0xd8c, 1, ProductNames::ARM_C1Ultra},   // C1-Ultra
-    {0x41, 0xd90, 1, ProductNames::ARM_C1Premium}, // C1-Premium
-    {0x41, 0xd8b, 1, ProductNames::ARM_C1Pro},     // C1-Pro
-    {0x41, 0xd85, 1, ProductNames::ARM_X925},      // X925
-    {0x41, 0xd87, 1, ProductNames::ARM_A725},      // A725
-    {0x41, 0xd84, 1, ProductNames::ARM_V3},        // V3
-    {0x41, 0xd83, 1, ProductNames::ARM_V3AE},      // V3AE
-    {0x41, 0xd8e, 1, ProductNames::ARM_N3},        // N3
-    {0x41, 0xd82, 1, ProductNames::ARM_X4},        // X4
-    {0x41, 0xd81, 1, ProductNames::ARM_A720},      // A720
-    {0x41, 0xd4e, 1, ProductNames::ARM_X3},        // X3
-    {0x41, 0xd4d, 1, ProductNames::ARM_A715},      // A715
-    {0x41, 0xd4f, 1, ProductNames::ARM_V2},        // V2
-    {0x41, 0xd4b, 1, ProductNames::ARM_A78C},      // A78C
-    {0x41, 0xd4a, 1, ProductNames::ARM_E1},        // E1
-    {0x41, 0xd49, 1, ProductNames::ARM_N2},        // N2
-    {0x41, 0xd48, 1, ProductNames::ARM_X2},        // X2
-    {0x41, 0xd47, 1, ProductNames::ARM_A710},      // A710
-    {0x41, 0xd4C, 1, ProductNames::ARM_X1C},       // X1C
-    {0x41, 0xd44, 1, ProductNames::ARM_X1},        // X1
-    {0x41, 0xd42, 1, ProductNames::ARM_A78AE},     // A78AE
-    {0x41, 0xd41, 1, ProductNames::ARM_A78},       // A78
-    {0x41, 0xd40, 1, ProductNames::ARM_V1},        // V1
-    {0x41, 0xd0e, 1, ProductNames::ARM_A76AE},     // A76AE
-    {0x41, 0xd0d, 1, ProductNames::ARM_A77},       // A77
-    {0x41, 0xd0c, 1, ProductNames::ARM_N1},        // N1
-    {0x41, 0xd0b, 1, ProductNames::ARM_A76},       // A76
-    {0x51, 0x804, 1, ProductNames::ARM_Kryo400},   // Kryo 4xx Gold (A76 based)
-    {0x41, 0xd0a, 1, ProductNames::ARM_A75},       // A75
-    {0x51, 0x802, 1, ProductNames::ARM_Kryo300},   // Kryo 3xx Gold (A75 based)
-    {0x41, 0xd09, 1, ProductNames::ARM_A73},       // A73
-    {0x51, 0x800, 1, ProductNames::ARM_Kryo200},   // Kryo 2xx Gold (A73 based)
-    {0x41, 0xd08, 1, ProductNames::ARM_A72},       // A72
+    {0x41, 0xd85, 1, ProductNames::ARM_X925},    // X925
+    {0x41, 0xd87, 1, ProductNames::ARM_A725},    // A725
+    {0x41, 0xd84, 1, ProductNames::ARM_V3},      // V3
+    {0x41, 0xd83, 1, ProductNames::ARM_V3AE},    // V3AE
+    {0x41, 0xd8e, 1, ProductNames::ARM_N3},      // N3
+    {0x41, 0xd82, 1, ProductNames::ARM_X4},      // X4
+    {0x41, 0xd81, 1, ProductNames::ARM_A720},    // A720
+    {0x41, 0xd4e, 1, ProductNames::ARM_X3},      // X3
+    {0x41, 0xd4d, 1, ProductNames::ARM_A715},    // A715
+    {0x41, 0xd4f, 1, ProductNames::ARM_V2},      // V2
+    {0x41, 0xd4b, 1, ProductNames::ARM_A78C},    // A78C
+    {0x41, 0xd4a, 1, ProductNames::ARM_E1},      // E1
+    {0x41, 0xd49, 1, ProductNames::ARM_N2},      // N2
+    {0x41, 0xd48, 1, ProductNames::ARM_X2},      // X2
+    {0x41, 0xd47, 1, ProductNames::ARM_A710},    // A710
+    {0x41, 0xd4C, 1, ProductNames::ARM_X1C},     // X1C
+    {0x41, 0xd44, 1, ProductNames::ARM_X1},      // X1
+    {0x41, 0xd42, 1, ProductNames::ARM_A78AE},   // A78AE
+    {0x41, 0xd41, 1, ProductNames::ARM_A78},     // A78
+    {0x41, 0xd40, 1, ProductNames::ARM_V1},      // V1
+    {0x41, 0xd0e, 1, ProductNames::ARM_A76AE},   // A76AE
+    {0x41, 0xd0d, 1, ProductNames::ARM_A77},     // A77
+    {0x41, 0xd0c, 1, ProductNames::ARM_N1},      // N1
+    {0x41, 0xd0b, 1, ProductNames::ARM_A76},     // A76
+    {0x51, 0x804, 1, ProductNames::ARM_Kryo400}, // Kryo 4xx Gold (A76 based)
+    {0x41, 0xd0a, 1, ProductNames::ARM_A75},     // A75
+    {0x51, 0x802, 1, ProductNames::ARM_Kryo300}, // Kryo 3xx Gold (A75 based)
+    {0x41, 0xd09, 1, ProductNames::ARM_A73},     // A73
+    {0x51, 0x800, 1, ProductNames::ARM_Kryo200}, // Kryo 2xx Gold (A73 based)
+    {0x41, 0xd08, 1, ProductNames::ARM_A72},     // A72

-    {0xc0, 0xac3, 1, ProductNames::ARM_Ampere_1},  // AmpereOne
-    {0xc0, 0xac4, 1, ProductNames::ARM_Ampere_1A}, // AmpereOneA
-    {0xc0, 0xac5, 1, ProductNames::ARM_Ampere_1B}, // AmpereOneB
-
-    {0x4e, 0x010, 1, ProductNames::ARM_Olympus}, // Olympus
-    {0x4e, 0x004, 1, ProductNames::ARM_Carmel},  // Carmel
+    {0x4e, 0x004, 1, ProductNames::ARM_Carmel}, // Carmel

    // Denver rated above A57 to match TX2 weirdness
    {0x4e, 0x003, 1, ProductNames::ARM_Denver}, // Denver
@@ -243,7 +227,6 @@ void CPUIDEmu::SetupHostHybridFlag() {
    {0x61, 0x024, 0, ProductNames::ARM_Icestorm_M1Pro}, // Apple Icestorm (M1 Pro)
    {0x61, 0x022, 0, ProductNames::ARM_Icestorm_M1},    // Apple Icestorm (M1)

-    {0x41, 0xd8a, 1, ProductNames::ARM_C1Nano},   // C1-Nano
    {0x41, 0xd80, 0, ProductNames::ARM_A520},     // A520
    {0x41, 0xd46, 0, ProductNames::ARM_A510},     // A510
    {0x41, 0xd06, 0, ProductNames::ARM_A65},      // A65
@@ -909,71 +892,71 @@ FEXCore::CPUID::FunctionResults CPUIDEmu::Function_8000_0001h(uint32_t Leaf) con

  Res.eax = FAMILY_IDENTIFIER;

-  Res.ecx = (1 << 0) |                               // LAHF/SAHF
-            (1 << 1) |                               // 0 = Single core product, 1 = multi core product
-            (0 << 2) |                               // SVM
-            (1 << 3) |                               // Extended APIC register space
-            (0 << 4) |                               // LOCK MOV CR0 means MOV CR8
-            (1 << 5) |                               // ABM instructions
-            (CTX->HostFeatures.SupportsSSE4a << 6) | // SSE4a
-            (0 << 7) |                               // Misaligned SSE mode
-            (1 << 8) |                               // PREFETCHW
-            (0 << 9) |                               // OS visible workaround support
-            (0 << 10) |                              // Instruction based sampling support
-            (0 << 11) |                              // XOP
-            (0 << 12) |                              // SKINIT
-            (0 << 13) |                              // Watchdog timer support
-            (0 << 14) |                              // Reserved
-            (0 << 15) |                              // Lightweight profiling support
-            (0 << 16) |                              // FMA4
-            (1 << 17) |                              // Translation cache extension
-            (0 << 18) |                              // Reserved
-            (0 << 19) |                              // Reserved
-            (0 << 20) |                              // Reserved
-            (0 << 21) |                              // XOP-TBM
-            (0 << 22) |                              // Topology extensions support
-            (0 << 23) |                              // Core performance counter extensions
-            (0 << 24) |                              // NB performance counter extensions
-            (0 << 25) |                              // Reserved
-            (0 << 26) |                              // Data breakpoints extensions
-            (0 << 27) |                              // Performance TSC
-            (0 << 28) |                              // L2 perf counter extensions
-            (0 << 29) |                              // MONITORX
-            (0 << 30) |                              // Reserved
-            (0 << 31);                               // Reserved
+  Res.ecx = (1 << 0) |  // LAHF/SAHF
+            (1 << 1) |  // 0 = Single core product, 1 = multi core product
+            (0 << 2) |  // SVM
+            (1 << 3) |  // Extended APIC register space
+            (0 << 4) |  // LOCK MOV CR0 means MOV CR8
+            (1 << 5) |  // ABM instructions
+            (0 << 6) |  // SSE4a
+            (0 << 7) |  // Misaligned SSE mode
+            (1 << 8) |  // PREFETCHW
+            (0 << 9) |  // OS visible workaround support
+            (0 << 10) | // Instruction based sampling support
+            (0 << 11) | // XOP
+            (0 << 12) | // SKINIT
+            (0 << 13) | // Watchdog timer support
+            (0 << 14) | // Reserved
+            (0 << 15) | // Lightweight profiling support
+            (0 << 16) | // FMA4
+            (1 << 17) | // Translation cache extension
+            (0 << 18) | // Reserved
+            (0 << 19) | // Reserved
+            (0 << 20) | // Reserved
+            (0 << 21) | // XOP-TBM
+            (0 << 22) | // Topology extensions support
+            (0 << 23) | // Core performance counter extensions
+            (0 << 24) | // NB performance counter extensions
+            (0 << 25) | // Reserved
+            (0 << 26) | // Data breakpoints extensions
+            (0 << 27) | // Performance TSC
+            (0 << 28) | // L2 perf counter extensions
+            (0 << 29) | // MONITORX
+            (0 << 30) | // Reserved
+            (0 << 31);  // Reserved

-  Res.edx = (1 << 0) |                                // FPU
-            (1 << 1) |                                // Virtual mode extensions
-            (1 << 2) |                                // Debugging extensions
-            (1 << 3) |                                // Page size extensions
-            (1 << 4) |                                // TSC
-            (1 << 5) |                                // MSR support
-            (1 << 6) |                                // PAE
-            (1 << 7) |                                // Machine Check Exception
-            (1 << 8) |                                // CMPXCHG8B
-            (1 << 9) |                                // APIC
-            (0 << 10) |                               // Reserved
-            (1 << 11) |                               // SYSCALL/SYSRET
-            (1 << 12) |                               // MTRR
-            (1 << 13) |                               // Page global extension
-            (1 << 14) |                               // Machine Check architecture
-            (1 << 15) |                               // CMOV
-            (1 << 16) |                               // Page attribute table
-            (1 << 17) |                               // Page-size extensions
-            (0 << 18) |                               // Reserved
-            (0 << 19) |                               // Reserved
-            (1 << 20) |                               // NX
-            (0 << 21) |                               // Reserved
-            (1 << 22) |                               // MMXExt
-            (1 << 23) |                               // MMX
-            (1 << 24) |                               // FXSAVE/FXRSTOR
-            (1 << 25) |                               // FXSAVE/FXRSTOR Optimizations
-            (0 << 26) |                               // 1 gigabit pages
-            (SUPPORTS_RDTSCP << 27) |                 // RDTSCP
-            (0 << 28) |                               // Reserved
-            (1 << 29) |                               // Long Mode
-            (CTX->HostFeatures.Supports3DNow << 30) | // 3DNow! Extensions
-            (CTX->HostFeatures.Supports3DNow << 31);  // 3DNow!
+  Res.edx = (1 << 0) |                // FPU
+            (1 << 1) |                // Virtual mode extensions
+            (1 << 2) |                // Debugging extensions
+            (1 << 3) |                // Page size extensions
+            (1 << 4) |                // TSC
+            (1 << 5) |                // MSR support
+            (1 << 6) |                // PAE
+            (1 << 7) |                // Machine Check Exception
+            (1 << 8) |                // CMPXCHG8B
+            (1 << 9) |                // APIC
+            (0 << 10) |               // Reserved
+            (1 << 11) |               // SYSCALL/SYSRET
+            (1 << 12) |               // MTRR
+            (1 << 13) |               // Page global extension
+            (1 << 14) |               // Machine Check architecture
+            (1 << 15) |               // CMOV
+            (1 << 16) |               // Page attribute table
+            (1 << 17) |               // Page-size extensions
+            (0 << 18) |               // Reserved
+            (0 << 19) |               // Reserved
+            (1 << 20) |               // NX
+            (0 << 21) |               // Reserved
+            (1 << 22) |               // MMXExt
+            (1 << 23) |               // MMX
+            (1 << 24) |               // FXSAVE/FXRSTOR
+            (1 << 25) |               // FXSAVE/FXRSTOR Optimizations
+            (0 << 26) |               // 1 gigabit pages
+            (SUPPORTS_RDTSCP << 27) | // RDTSCP
+            (0 << 28) |               // Reserved
+            (1 << 29) |               // Long Mode
+            (1 << 30) |               // 3DNow! Extensions
+            (1 << 31);                // 3DNow!
  return Res;
 }

@@ -1,27 +0,0 @@
-// SPDX-License-Identifier: MIT
-#include <Interface/Context/Context.h>
-
-#include <FEXCore/HLE/SourcecodeResolver.h>
-
-namespace FEXCore {
-
-ExecutableFileInfo::~ExecutableFileInfo() = default;
-
-} // namespace FEXCore
-
-namespace FEXCore::Context {
-
-CodeCache::CodeCache(ContextImpl& CTX_)
-  : CTX(CTX_) {}
-CodeCache::~CodeCache() = default;
-
-void CodeCache::LoadData(Core::InternalThreadState& Thread, std::byte* MappedCacheFile, const ExecutableFileSectionInfo& GuestRIPLookup) {
-  // TODO
-}
-
-bool CodeCache::SaveData(Core::InternalThreadState& Thread, int fd, const ExecutableFileSectionInfo& SourceBinary, uint64_t SerializedBaseAddress) {
-  // TODO
-  return true;
-}
-
-} // namespace FEXCore::Context
@@ -14,11 +14,11 @@ $end_info$
 #include "Interface/Core/CPUBackend.h"
 #include "Interface/Core/CPUID.h"
 #include "Interface/Core/Frontend.h"
+#include "Interface/Core/ObjectCache/ObjectCacheService.h"
 #include "Interface/Core/OpcodeDispatcher.h"
 #include "Interface/Core/JIT/JITClass.h"
 #include "Interface/Core/Dispatcher/Dispatcher.h"
 #include "Interface/Core/X86Tables/X86Tables.h"
-#include <Interface/GDBJIT/GDBJIT.h>
 #include "Interface/IR/IR.h"
 #include "Interface/IR/IREmitter.h"
 #include "Interface/IR/Passes/RegisterAllocationPass.h"
@@ -57,13 +57,20 @@ $end_info$
 #include <algorithm>
 #include <array>
 #include <atomic>
+#include <chrono>
+#include <condition_variable>
 #include <fcntl.h>
 #include <functional>
 #include <mutex>
+#include <queue>
 #include <shared_mutex>
+#include <signal.h>
 #include <stdio.h>
+#include <string_view>
 #include <sys/stat.h>
+#include <type_traits>
 #include <unistd.h>
+#include <unordered_map>
 #include <utility>
 #include <xxhash.h>

@@ -71,7 +78,10 @@ namespace FEXCore::Context {
 ContextImpl::ContextImpl(const FEXCore::HostFeatures& Features)
  : HostFeatures {Features}
  , CPUID {this}
-  , CodeCache {*this} {
+  , IRCaptureCache {this} {
+  if (Config.CacheObjectCodeCompilation() != FEXCore::Config::ConfigObjectCodeHandler::CONFIG_NONE) {
+    CodeObjectCacheService = fextl::make_unique<FEXCore::CodeSerialize::CodeObjectSerializeService>(this);
+  }
  if (!Config.Is64BitMode()) {
    // When operating in 32-bit mode, the virtual memory we care about is only the lower 32-bits.
    Config.VirtualMemSize = 1ULL << 32;
@@ -93,8 +103,14 @@ ContextImpl::ContextImpl(const FEXCore::HostFeatures& Features)

  // Track atomic TSO emulation configuration.
  UpdateAtomicTSOEmulationConfig();
-  // Ensure X87 precision constraints are respected.
-  UpdateX87PrecisionConfig();
+}
+
+ContextImpl::~ContextImpl() {
+  {
+    if (CodeObjectCacheService) {
+      CodeObjectCacheService->Shutdown();
+    }
+  }
 }

 struct GetFrameBlockInfoResult {
@@ -123,11 +139,6 @@ bool ContextImpl::IsCurrentBlockSingleInst(FEXCore::Core::InternalThreadState* T
  return InlineTail && InlineTail->SingleInst;
 }

-uint64_t ContextImpl::GetGuestBlockEntry(FEXCore::Core::InternalThreadState* Thread) {
-  auto [_, InlineTail] = GetFrameBlockInfo(Thread->CurrentFrame);
-  return InlineTail ? InlineTail->RIP : 0;
-}
-
 uint64_t ContextImpl::RestoreRIPFromHostPC(FEXCore::Core::InternalThreadState* Thread, uint64_t HostPC) {
  const auto Frame = Thread->CurrentFrame;
  const uint64_t BlockBegin = Frame->State.InlineJITBlockHeader;
@@ -338,9 +349,36 @@ bool ContextImpl::InitCore() {
  Dispatcher = FEXCore::CPU::Dispatcher::Create(this);

  // Set up the SignalDelegator config since core is initialized.
-  SignalDelegation->SetConfig(Dispatcher->MakeSignalDelegatorConfig());
+  FEXCore::SignalDelegator::SignalDelegatorConfig SignalConfig {
+    .DispatcherBegin = Dispatcher->Start,
+    .DispatcherEnd = Dispatcher->End,

-#if defined(_WIN32) && !defined(_M_ARM_64EC)
+    .AbsoluteLoopTopAddress = Dispatcher->AbsoluteLoopTopAddress,
+    .AbsoluteLoopTopAddressFillSRA = Dispatcher->AbsoluteLoopTopAddressFillSRA,
+    .SignalHandlerReturnAddress = Dispatcher->SignalHandlerReturnAddress,
+    .SignalHandlerReturnAddressRT = Dispatcher->SignalHandlerReturnAddressRT,
+
+    .PauseReturnInstruction = Dispatcher->PauseReturnInstruction,
+    .ThreadPauseHandlerAddressSpillSRA = Dispatcher->ThreadPauseHandlerAddressSpillSRA,
+    .ThreadPauseHandlerAddress = Dispatcher->ThreadPauseHandlerAddress,
+
+    // Stop handlers.
+    .ThreadStopHandlerAddressSpillSRA = Dispatcher->ThreadStopHandlerAddressSpillSRA,
+    .ThreadStopHandlerAddress = Dispatcher->ThreadStopHandlerAddress,
+
+    // SRA information.
+    .SRAGPRCount = Dispatcher->GetSRAGPRCount(),
+    .SRAFPRCount = Dispatcher->GetSRAFPRCount(),
+  };
+
+  Dispatcher->GetSRAGPRMapping(SignalConfig.SRAGPRMapping);
+  Dispatcher->GetSRAFPRMapping(SignalConfig.SRAFPRMapping);
+
+  // Give this configuration to the SignalDelegator.
+  SignalDelegation->SetConfig(SignalConfig);
+
+#ifndef _WIN32
+#elif !defined(_M_ARM_64EC)
  // WOW64 always needs the interrupt fault check to be enabled.
  Config.NeedsPendingInterruptFaultCheck = true;
 #endif
@@ -360,6 +398,12 @@ void ContextImpl::HandleCallback(FEXCore::Core::InternalThreadState* Thread, uin
 void ContextImpl::ExecuteThread(FEXCore::Core::InternalThreadState* Thread) {
  Dispatcher->ExecuteDispatch(Thread->CurrentFrame);

+  if (CodeObjectCacheService) {
+    // Ensure the Code Object Serialization service has fully serialized this thread's data before clearing the cache
+    // Use the thread's object cache ref counter for this
+    CodeSerialize::CodeObjectSerializeService::WaitForEmptyJobQueue(&Thread->ObjectCacheRefCounter);
+  }
+
  // If it is the parent thread that died then just leave
  // TODO: This doesn't make sense when the parent thread doesn't outlive its children
 }
@@ -397,6 +441,22 @@ ContextImpl::CreateThread(uint64_t InitialRIP, uint64_t StackPointer, const FEXC
  Thread->CurrentFrame->State.gregs[X86State::REG_RSP] = StackPointer;
  Thread->CurrentFrame->State.rip = InitialRIP;

+  // Set up default code segment.
+  // Default code segment indexes match the numbers that the Linux kernel uses.
+  Thread->CurrentFrame->State.cs_idx = 6 << 3;
+  auto &GDT = Thread->CurrentFrame->State.gdt[Thread->CurrentFrame->State.cs_idx >> 3];
+  Thread->CurrentFrame->State.SetGDTBase(&GDT, 0);
+  Thread->CurrentFrame->State.SetGDTLimit(&GDT, 0xF'FFFFU);
+
+  if (Config.Is64BitMode) {
+    GDT.L = 1; // L = Long Mode = 64-bit
+    GDT.D = 0; // D = Default Operand SIze = Reserved
+  }
+  else {
+    GDT.L = 0; // L = Long Mode = 32-bit
+    GDT.D = 1; // D = Default Operand Size = 32-bit
+  }
+
  // Copy over the new thread state to the new object
  if (NewThreadState) {
    memcpy(&Thread->CurrentFrame->State, NewThreadState, sizeof(FEXCore::Core::CPUState));
@@ -460,6 +520,12 @@ void ContextImpl::OnCodeBufferAllocated(CPU::CodeBuffer& Buffer) {
 void ContextImpl::ClearCodeCache(FEXCore::Core::InternalThreadState* Thread, bool NewCodeBuffer) {
  FEXCORE_PROFILE_INSTANT("ClearCodeCache");

+  if (CodeObjectCacheService) {
+    // Ensure the Code Object Serialization service has fully serialized this thread's data before clearing the cache
+    // Use the thread's object cache ref counter for this
+    CodeSerialize::CodeObjectSerializeService::WaitForEmptyJobQueue(&Thread->ObjectCacheRefCounter);
+  }
+
  if (NewCodeBuffer) {
    // Allocate new CodeBuffer + L3 LookupCache and clear L1+L2 caches
    Thread->CPUBackend->ClearCache();
@@ -513,8 +579,7 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue
    auto BlockInfo = Thread->FrontendDecoder->GetDecodedBlockInfo();
    auto CodeBlocks = &BlockInfo->Blocks;

-    Thread->OpDispatcher->BeginFunction(GuestRIP, CodeBlocks, BlockInfo->TotalInstructionCount, BlockInfo->Is64BitMode,
-                                        AreMonoHacksActive() && MonoBackpatcherBlock.load(std::memory_order_relaxed) == GuestRIP);
+    Thread->OpDispatcher->BeginFunction(GuestRIP, CodeBlocks, BlockInfo->TotalInstructionCount, BlockInfo->Is64BitMode);

    const auto GPRSize = Thread->OpDispatcher->GetGPROpSize();

@@ -542,7 +607,7 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue

      if (InstsInBlock == 0) {
        // Special case for an empty instruction block.
-        Thread->OpDispatcher->ExitFunction(Thread->OpDispatcher->_InlineEntrypointOffset(GPRSize, Block.Entry - GuestRIP));
+        Thread->OpDispatcher->ExitFunction(Thread->OpDispatcher->_EntrypointOffset(GPRSize, Block.Entry - GuestRIP));
      }

      for (size_t i = 0; i < InstsInBlock; ++i) {
@@ -572,12 +637,11 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue
          Thread->OpDispatcher->_GuestOpcode(InstAddress - GuestRIP);
        }

-        if (Config.SMCChecks == FEXCore::Config::CONFIG_SMC_FULL || Block.ForceFullSMCDetection) {
-          auto ExistingCodePtr = reinterpret_cast<uint8_t*>(Block.Entry + BlockInstructionsLength);
-          auto InstAddressReg = Thread->OpDispatcher->_EntrypointOffset(GPRSize, InstAddress - GuestRIP);
-          std::array<uint8_t, 0x10> CodeOriginal;
-          memcpy(CodeOriginal.data(), ExistingCodePtr, DecodedInfo->InstSize);
-          auto CodeChanged = Thread->OpDispatcher->_ValidateCode(CodeOriginal, InstAddressReg, DecodedInfo->InstSize);
+        if (Config.SMCChecks == FEXCore::Config::CONFIG_SMC_FULL) {
+          auto ExistingCodePtr = reinterpret_cast<uint64_t*>(Block.Entry + BlockInstructionsLength);
+
+          auto CodeChanged = Thread->OpDispatcher->_ValidateCode(ExistingCodePtr[0], ExistingCodePtr[1],
+                                                                 (uintptr_t)ExistingCodePtr - GuestRIP, DecodedInfo->InstSize);

          auto InvalidateCodeCond = Thread->OpDispatcher->CondJump(CodeChanged);

@@ -587,7 +651,7 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue

          Thread->OpDispatcher->SetCurrentCodeBlock(CodeWasChangedBlock);
          Thread->OpDispatcher->_ThreadRemoveCodeEntry();
-          Thread->OpDispatcher->ExitFunction(Thread->OpDispatcher->_InlineEntrypointOffset(GPRSize, InstAddress - GuestRIP));
+          Thread->OpDispatcher->ExitFunction(Thread->OpDispatcher->_EntrypointOffset(GPRSize, InstAddress - GuestRIP));

          auto NextOpBlock = Thread->OpDispatcher->CreateNewCodeBlockAfter(CurrentBlock);

@@ -595,21 +659,15 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue
          Thread->OpDispatcher->SetCurrentCodeBlock(NextOpBlock);
        }

-        if (TableInfo && TableInfo->OpcodeDispatcher.OpDispatch) {
-          auto Fn = TableInfo->OpcodeDispatcher.OpDispatch;
+        if (TableInfo && TableInfo->OpcodeDispatcher) {
+          auto Fn = TableInfo->OpcodeDispatcher;
          Thread->OpDispatcher->ResetHandledLock();
          Thread->OpDispatcher->ResetDecodeFailure();
-          IR::ForceTSOMode ForceTSO = IR::ForceTSOMode::NoOverride;
-          if (BlockInForceTSOValidRange) {
-            if (InstForceTSOIt != ForceTSOInstructions.end() && *InstForceTSOIt == InstAddress) {
-              ForceTSO = IR::ForceTSOMode::ForceEnabled;
-            } else {
-              ForceTSO = IR::ForceTSOMode::ForceDisabled;
-            }
-          } else if (DecodedInfo->Flags & X86Tables::DecodeFlags::FLAG_FORCE_TSO) {
-            ForceTSO = IR::ForceTSOMode::ForceEnabled;
-          }
-
+          IR::ForceTSOMode ForceTSO =
+            BlockInForceTSOValidRange ?
+              (InstForceTSOIt != ForceTSOInstructions.end() && *InstForceTSOIt == InstAddress ? IR::ForceTSOMode::ForceEnabled :
+                                                                                                IR::ForceTSOMode::ForceDisabled) :
+              IR::ForceTSOMode::NoOverride;
          Thread->OpDispatcher->SetForceTSO(ForceTSO);
          std::invoke(Fn, Thread->OpDispatcher, DecodedInfo);
          if (Thread->OpDispatcher->HadDecodeFailure()) {
@@ -659,8 +717,7 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue

        if (NeedsBlockEnd) {
          // We had some instructions. Early exit
-          Thread->OpDispatcher->ExitFunction(
-            Thread->OpDispatcher->_InlineEntrypointOffset(GPRSize, Block.Entry + BlockInstructionsLength - GuestRIP));
+          Thread->OpDispatcher->ExitFunction(Thread->OpDispatcher->_EntrypointOffset(GPRSize, Block.Entry + BlockInstructionsLength - GuestRIP));
          break;
        }

@@ -703,10 +760,27 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue
 }

 ContextImpl::CompileCodeResult ContextImpl::CompileCode(FEXCore::Core::InternalThreadState* Thread, uint64_t GuestRIP, uint64_t MaxInst) {
+  // JIT Code object cache lookup
+  if (CodeObjectCacheService) {
+    auto CodeCacheEntry = CodeObjectCacheService->FetchCodeObjectFromCache(GuestRIP);
+    if (CodeCacheEntry) {
+      auto CompiledCode = Thread->CPUBackend->RelocateJITObjectCode(GuestRIP, CodeCacheEntry);
+      if (CompiledCode) {
+        return {
+          .CompiledCode = {},
+          .DebugData = nullptr, // nullptr here ensures that code serialization doesn't occur on from cache read
+          .StartAddr = 0,       // Unused
+          .Length = 0,          // Unused
+          .NeedsAddGuestCodeRanges = false,
+        };
+      }
+    }
+  }
+
  if (SourcecodeResolver && Config.GDBSymbols()) {
-    auto MappedSection = SyscallHandler->LookupExecutableFileSection(*Thread, GuestRIP);
-    if (MappedSection) {
-      MappedSection->FileInfo.SourcecodeMap = SourcecodeResolver->GenerateMap(MappedSection->FileInfo.Filename, MappedSection->FileInfo.FileId);
+    auto AOTIRCacheEntry = SyscallHandler->LookupAOTIRCacheEntry(Thread, GuestRIP);
+    if (AOTIRCacheEntry.Entry && !AOTIRCacheEntry.Entry->ContainsCode) {
+      AOTIRCacheEntry.Entry->SourcecodeMap = SourcecodeResolver->GenerateMap(AOTIRCacheEntry.Entry->Filename, AOTIRCacheEntry.Entry->FileId);
    }
  }

@@ -781,44 +855,51 @@ uintptr_t ContextImpl::CompileBlock(FEXCore::Core::CpuStateFrame* Frame, uint64_
  if (Config.BlockJITNaming()) {
    auto FragmentBasePtr = CompiledCode.BlockBegin;

-    auto GuestRIPLookup = SyscallHandler->LookupExecutableFileSection(*Thread, GuestRIP);
+    if (DebugData) {
+      auto GuestRIPLookup = SyscallHandler->LookupAOTIRCacheEntry(Thread, GuestRIP);

-    if (DebugData->Subblocks.size()) {
-      for (auto& Subblock : DebugData->Subblocks) {
-        auto BlockBasePtr = FragmentBasePtr + Subblock.HostCodeOffset;
-        if (GuestRIPLookup) {
-          Symbols.Register(Thread->SymbolBuffer.get(), BlockBasePtr, CompiledCode.Size, GuestRIPLookup->FileInfo.Filename,
-                           GuestRIP - GuestRIPLookup->FileStartVA);
-        } else {
-          Symbols.Register(Thread->SymbolBuffer.get(), BlockBasePtr, GuestRIP, Subblock.HostCodeSize);
+      if (DebugData->Subblocks.size()) {
+        for (auto& Subblock : DebugData->Subblocks) {
+          auto BlockBasePtr = FragmentBasePtr + Subblock.HostCodeOffset;
+          if (GuestRIPLookup.Entry) {
+            Symbols.Register(Thread->SymbolBuffer.get(), BlockBasePtr, CompiledCode.Size, GuestRIPLookup.Entry->Filename,
+                             GuestRIP - GuestRIPLookup.VAFileStart);
+          } else {
+            Symbols.Register(Thread->SymbolBuffer.get(), BlockBasePtr, GuestRIP, Subblock.HostCodeSize);
+          }
        }
-      }
-    } else {
-      if (GuestRIPLookup) {
-        Symbols.Register(Thread->SymbolBuffer.get(), FragmentBasePtr, CompiledCode.Size, GuestRIPLookup->FileInfo.Filename,
-                         GuestRIP - GuestRIPLookup->FileStartVA);
      } else {
-        Symbols.Register(Thread->SymbolBuffer.get(), FragmentBasePtr, GuestRIP, CompiledCode.Size);
+        if (GuestRIPLookup.Entry) {
+          Symbols.Register(Thread->SymbolBuffer.get(), FragmentBasePtr, CompiledCode.Size, GuestRIPLookup.Entry->Filename,
+                           GuestRIP - GuestRIPLookup.VAFileStart);
+        } else {
+          Symbols.Register(Thread->SymbolBuffer.get(), FragmentBasePtr, GuestRIP, CompiledCode.Size);
+        }
      }
    }
  }

-  if (Config.LibraryJITNaming() || Config.GDBSymbols()) {
-    auto MappedSection = SyscallHandler->LookupExecutableFileSection(*Thread, GuestRIP);
-    if (MappedSection) {
-      if (Config.LibraryJITNaming()) {
-        Symbols.RegisterNamedRegion(Thread->SymbolBuffer.get(), CodePtr, DebugData->HostCodeSize, MappedSection->FileInfo.Filename);
-      }
-
-      if (Config.GDBSymbols()) {
-        GDBJITRegister(MappedSection->FileInfo, MappedSection->FileStartVA, GuestRIP, (uintptr_t)CodePtr, *DebugData);
-      }
-    }
+  // Tell the object cache service to serialize the code if enabled
+  if (CodeObjectCacheService && Config.CacheObjectCodeCompilation == FEXCore::Config::ConfigObjectCodeHandler::CONFIG_READWRITE && DebugData) {
+    CodeObjectCacheService->AsyncAddSerializationJob(
+      fextl::make_unique<CodeSerialize::AsyncJobHandler::SerializationJobData>(CodeSerialize::AsyncJobHandler::SerializationJobData {
+        .GuestRIP = GuestRIP,
+        .GuestCodeLength = Length,
+        .GuestCodeHash = 0,
+        .HostCodeBegin = CompiledCode.BlockBegin,
+        .HostCodeLength = CompiledCode.Size,
+        .HostCodeHash = 0,
+        .ThreadJobRefCount = &Thread->ObjectCacheRefCounter,
+        .Relocations = std::move(*DebugData->Relocations),
+      }));
  }

  // Clear any relocations that might have been generated
-  if (!CodeCache.IsGeneratingCache) {
-    Thread->CPUBackend->ClearRelocations();
+  Thread->CPUBackend->ClearRelocations();
+
+  if (IRCaptureCache.PostCompileCode(Thread, CompiledCode.BlockBegin, GuestRIP, StartAddr, Length, {}, DebugData.get(), false)) {
+    // Early exit
+    return (uintptr_t)CodePtr;
  }

  if (NeedsAddGuestCodeRanges) {
@@ -897,6 +978,23 @@ void ContextImpl::InvalidateGuestCodeRange(FEXCore::Core::InternalThreadState* T
  InvalidateGuestThreadCodeRange(Thread, Accumulator, Start, Length);
 }

+void ContextImpl::MarkMemoryShared(FEXCore::Core::InternalThreadState* Thread) {
+  if (!Thread) {
+    return;
+  }
+
+  if (!IsMemoryShared) {
+    IsMemoryShared = true;
+    UpdateAtomicTSOEmulationConfig();
+
+    if (Config.TSOAutoMigration) {
+      // Only the lookup cache is cleared here, so that old code can keep running until next compilation.
+      // This will leak previously compiled blocks until the CodeBuffer is cleared for some other reason.
+      Thread->LookupCache->ClearCache();
+    }
+  }
+}
+
 bool ContextImpl::ThreadRemoveCodeEntry(FEXCore::Core::InternalThreadState* Thread, uint64_t GuestRIP) {
  LogMan::Throw::AFmt(static_cast<ContextImpl*>(Thread->CTX)->CodeInvalidationMutex.try_lock() == false, "CodeInvalidationMutex needs to "
                                                                                                         "be unique_locked here");
@@ -904,10 +1002,6 @@ bool ContextImpl::ThreadRemoveCodeEntry(FEXCore::Core::InternalThreadState* Thre
  return Thread->LookupCache->Erase(Thread->CurrentFrame, GuestRIP);
 }

-void ContextImpl::ThreadRemoveCodeEntryFromJit(FEXCore::Core::CpuStateFrame* Frame, uint64_t GuestRIP) {
-  static_cast<ContextImpl*>(Frame->Thread->CTX)->SyscallHandler->InvalidateGuestCodeRange(Frame->Thread, GuestRIP, 1);
-}
-
 std::optional<CustomIRResult>
 ContextImpl::AddCustomIREntrypoint(uintptr_t Entrypoint, CustomIREntrypointHandler Handler, void* Creator, void* Data) {
  LOGMAN_THROW_A_FMT(Config.Is64BitMode || !(Entrypoint >> 32), "64-bit Entrypoint in 32-bit mode {:x}", Entrypoint);
@@ -947,10 +1041,10 @@ void ContextImpl::AddThunkTrampolineIRHandler(uintptr_t Entrypoint, uintptr_t Gu

      if (GPRSize == IR::OpSize::i64Bit) {
        IR::Ref R = emit->_StoreRegister(emit->Constant(Entrypoint), GPRSize);
-        R->Reg = IR::PhysicalRegister(IR::RegClass::GPRFixed, X86State::REG_R11).Raw;
+        R->Reg = IR::PhysicalRegister(IR::GPRFixedClass, X86State::REG_R11).Raw;
      } else {
-        emit->_StoreContextFPR(GPRSize, emit->_VCastFromGPR(IR::OpSize::i64Bit, IR::OpSize::i64Bit, emit->Constant(Entrypoint)),
-                               offsetof(Core::CPUState, mm[0][0]));
+        emit->_StoreContext(GPRSize, IR::FPRClass, emit->_VCastFromGPR(IR::OpSize::i64Bit, IR::OpSize::i64Bit, emit->Constant(Entrypoint)),
+                            offsetof(Core::CPUState, mm[0][0]));
      }
      emit->_ExitFunction(IR::OpSize::i64Bit, emit->Constant(GuestThunkEntrypoint), IR::BranchHint::None, emit->Invalid(), emit->Invalid());
    },
@@ -981,36 +1075,25 @@ void ContextImpl::RemoveForceTSOInformation(uint64_t Address, uint64_t Size) {
  ForceTSOInstructions.erase(ForceTSOInstructions.lower_bound(Address), ForceTSOInstructions.upper_bound(Address + Size));
 }

-void ContextImpl::MarkMonoBackpatcherBlock(uint64_t BlockEntry) {
-  MonoBackpatcherBlock.store(BlockEntry, std::memory_order_relaxed);
-}
-
-void ContextImpl::RemoveCustomIREntrypoint(FEXCore::Core::InternalThreadState* Thread, uintptr_t Entrypoint) {
+void ContextImpl::RemoveCustomIREntrypoint(uintptr_t Entrypoint) {
  LOGMAN_THROW_A_FMT(Config.Is64BitMode || !(Entrypoint >> 32), "64-bit Entrypoint in 32-bit mode {:x}", Entrypoint);

  std::scoped_lock lk(CustomIRMutex);

+  InvalidatedEntryAccumulator Accumulator;
+  InvalidateGuestCodeRange(nullptr, Accumulator, Entrypoint, 1);
  CustomIRHandlers.erase(Entrypoint);
+
  HasCustomIRHandlers = !CustomIRHandlers.empty();
-  SyscallHandler->InvalidateGuestCodeRange(Thread, Entrypoint, 1);
 }

-void ContextImpl::MonoBackpatcherWrite(FEXCore::Core::CpuStateFrame* Frame, uint8_t Size, uint64_t Address, uint64_t Value) {
-  auto Thread = Frame->Thread;
-  auto CTX = static_cast<ContextImpl*>(Thread->CTX);
-  {
-    auto lk = GuardSignalDeferringSection(CTX->CodeInvalidationMutex, Thread);
+IR::AOTIRCacheEntry* ContextImpl::LoadAOTIRCacheEntry(const fextl::string& filename) {
+  auto rv = IRCaptureCache.LoadAOTIRCacheEntry(filename);
+  return rv;
+}

-    if (Size == 8) {
-      *reinterpret_cast<uint64_t*>(Address) = Value;
-    } else if (Size == 4) {
-      *reinterpret_cast<uint32_t*>(Address) = Value;
-    } else {
-      ERROR_AND_DIE_FMT("Unexpected write size for backpatcher: {}", Size);
-    }
-  }
-
-  CTX->SyscallHandler->InvalidateGuestCodeRange(Thread, Address, Size);
+void ContextImpl::UnloadAOTIRCacheEntry(IR::AOTIRCacheEntry* Entry) {
+  IRCaptureCache.UnloadAOTIRCacheEntry(Entry);
 }

 void ContextImpl::ConfigureAOTGen(FEXCore::Core::InternalThreadState* Thread, fextl::set<uint64_t>* ExternalBranches, uint64_t SectionMaxAddress) {
@@ -2,7 +2,6 @@

 #include "Common/SoftFloat.h"
 #include "Interface/Context/Context.h"
-#include "Interface/Core/CPUBackend.h"
 #include "Interface/Core/Dispatcher/Dispatcher.h"
 #include "Interface/Core/LookupCache.h"
 #include "Interface/Core/X86HelperGen.h"
@@ -17,20 +16,14 @@
 #include <FEXCore/Utils/Event.h>
 #include <FEXCore/Utils/LogManager.h>
 #include <FEXCore/Utils/MathUtils.h>
-#include <FEXHeaderUtils/Syscalls.h>

 #include <CodeEmitter/Emitter.h>

-#ifdef VIXL_SIMULATOR
-#include <aarch64/simulator-aarch64.h>
-#endif
-
-#include <array>
 #include <atomic>
-#include <bit>
 #include <condition_variable>
 #include <csignal>
 #include <cstring>
+#include <signal.h>

 namespace FEXCore::CPU {

@@ -141,6 +134,8 @@ void Dispatcher::EmitDispatcher() {

  // We want to ensure that we are 16 byte aligned at the top of this loop
  Align16B();
+  ARMEmitter::BiDirectionalLabel FullLookup {};
+  ARMEmitter::BiDirectionalLabel CallBlock {};

  Bind(&LoopTop);
  AbsoluteLoopTopAddress = GetCursorAddress<uint64_t>();
@@ -148,33 +143,23 @@ void Dispatcher::EmitDispatcher() {
  // Load in our RIP
  ldr(RipReg, STATE_PTR(CpuStateFrame, State.rip));

-#ifdef _M_ARM_64EC
-  // Clobbers TMP1/2
-  // Check the EC code bitmap incase we need to exit the JIT to call into native code.
-  ARMEmitter::ForwardLabel l_NotECCode;
-  ldr(TMP1, ARMEmitter::XReg::x18, TEB_PEB_OFFSET);
-  ldr(TMP1, TMP1, PEB_EC_CODE_BITMAP_OFFSET);
-
-  lsr(ARMEmitter::Size::i64Bit, TMP2, RipReg, 15);
-  and_(ARMEmitter::Size::i64Bit, TMP2, TMP2, 0x1fffffffffff8);
-  ldr(TMP1, TMP1, TMP2, ARMEmitter::ExtendedType::LSL_64, 0);
-  lsr(ARMEmitter::Size::i64Bit, TMP2, RipReg, 12);
-  lsrv(ARMEmitter::Size::i64Bit, TMP1, TMP1, TMP2);
-  tbz(TMP1, 0, &l_NotECCode);
-
-  str(REG_CALLRET_SP, STATE_PTR(CpuStateFrame, State.callret_sp));
-
-  add(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::rsp, StaticRegisters[X86State::REG_RSP], 0);
-  mov(EC_CALL_CHECKER_PC_REG, RipReg);
-  ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.Common.ExitFunctionEC));
-  br(TMP2);
-
-  Bind(&l_NotECCode);
-#endif
-
  ldrb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
  cbnz(ARMEmitter::Size::i32Bit, TMP1, &CompileSingleStep);

+  // L1 Cache
+  ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.L1Pointer));
+
+  and_(ARMEmitter::Size::i64Bit, TMP4, RipReg.R(), LookupCache::L1_ENTRIES_MASK);
+  add(ARMEmitter::Size::i64Bit, TMP1, TMP1, TMP4, ARMEmitter::ShiftType::LSL, 4);
+  ldp<ARMEmitter::IndexType::OFFSET>(TMP4, TMP1, TMP1, 0);
+  sub(ARMEmitter::Size::i64Bit, TMP1, TMP1, RipReg);
+  cbnz(ARMEmitter::Size::i64Bit, TMP1, &FullLookup);
+
+  br(TMP4);
+
+  // L1C check failed, do a full lookup
+  Bind(&FullLookup);
+
  // This is the block cache lookup routine
  // It matches what is going on it LookupCache.h::FindBlock
  ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.L2Pointer));
@@ -302,10 +287,40 @@ void Dispatcher::EmitDispatcher() {
    br(TMP1);
  }

+#ifdef _M_ARM_64EC
+  // Clobbers TMP1/2
+  auto EmitECExitCheck = [&]() {
+    // Check the EC code bitmap incase we need to exit the JIT to call into native code.
+    ARMEmitter::ForwardLabel l_NotECCode;
+    ldr(TMP1, ARMEmitter::XReg::x18, TEB_PEB_OFFSET);
+    ldr(TMP1, TMP1, PEB_EC_CODE_BITMAP_OFFSET);
+
+    lsr(ARMEmitter::Size::i64Bit, TMP2, RipReg, 15);
+    and_(ARMEmitter::Size::i64Bit, TMP2, TMP2, 0x1fffffffffff8);
+    ldr(TMP1, TMP1, TMP2, ARMEmitter::ExtendedType::LSL_64, 0);
+    lsr(ARMEmitter::Size::i64Bit, TMP2, RipReg, 12);
+    lsrv(ARMEmitter::Size::i64Bit, TMP1, TMP1, TMP2);
+    tbz(TMP1, 0, &l_NotECCode);
+
+    str(REG_CALLRET_SP, STATE_PTR(CpuStateFrame, State.callret_sp));
+
+    add(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::rsp, StaticRegisters[X86State::REG_RSP], 0);
+    mov(EC_CALL_CHECKER_PC_REG, RipReg);
+    ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.Common.ExitFunctionEC));
+    br(TMP2);
+
+    Bind(&l_NotECCode);
+  };
+#endif
+
  // Need to create the block
  {
    Bind(&NoBlock);

+#ifdef _M_ARM_64EC
+    EmitECExitCheck();
+#endif
+
    EmitSignalGuardedRegion([&]() {
      SpillStaticRegs(TMP1);

@@ -340,6 +355,10 @@ void Dispatcher::EmitDispatcher() {
  {
    Bind(&CompileSingleStep);

+#ifdef _M_ARM_64EC
+    EmitECExitCheck();
+#endif
+
    EmitSignalGuardedRegion([&]() {
      SpillStaticRegs(TMP1);

@@ -550,8 +569,8 @@ void Dispatcher::EmitDispatcher() {
      FABI_F80_I16_I32_PTR,
      FABI_F32_I16_F80_PTR,
      FABI_F64_I16_F80_PTR,
-      FABI_F64_F64_PTR,
-      FABI_F64_F64_F64_PTR,
+      FABI_F64_I16_F64_PTR,
+      FABI_F64_I16_F64_F64_PTR,
      FABI_I16_I16_F80_PTR,
      FABI_I32_I16_F80_PTR,
      FABI_I64_I16_F80_PTR,
@@ -559,7 +578,7 @@ void Dispatcher::EmitDispatcher() {
      FABI_F80_I16_F80_PTR,
      FABI_F80_I16_F80_F80_PTR,
      FABI_F80x2_I16_F80_PTR,
-      FABI_F64x2_F64_PTR,
+      FABI_F64x2_I16_F64_PTR,
      FABI_I32_I64_I64_V128_V128_I16,
      FABI_I32_V128_V128_I16,
    }};
@@ -758,7 +777,7 @@ uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {

    ldrh(ARMEmitter::WReg::w0, STATE, offsetof(FEXCore::Core::CPUState, FCW));
    if (!TMP_ABIARGS) {
-      mov(VABI1.Q(), VTMP1.Q());
+      fmov(VABI1.D(), VTMP1.D());
    }

    mov(ARMEmitter::XReg::x1, STATE);
@@ -791,7 +810,7 @@ uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {

    FillF64Result();
  } break;
-  case FABI_F64_F64_PTR: {
+  case FABI_F64_I16_F64_PTR: {
    // Linux Reg/Win32 Reg:
    // tmp4 (x4/x13): FallbackHandler
    // x30: return
@@ -801,17 +820,18 @@ uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {
    if (!TMP_ABIARGS) {
      fmov(VABI1.D(), VTMP1.D());
    }
-    mov(ARMEmitter::XReg::x0, STATE);
+    ldrh(ARMEmitter::WReg::w0, STATE, offsetof(FEXCore::Core::CPUState, FCW));
+    mov(ARMEmitter::XReg::x1, STATE);

    if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
-      GenerateIndirectRuntimeCall<double, double, uint64_t>(FallbackPointerReg);
+      GenerateIndirectRuntimeCall<double, uint16_t, double, uint64_t>(FallbackPointerReg);
    } else {
      blr(FallbackPointerReg);
    }

    FillF64Result();
  } break;
-  case FABI_F64_F64_F64_PTR: {
+  case FABI_F64_I16_F64_F64_PTR: {
    // Linux Reg/Win32 Reg:
    // tmp4 (x4/x13): FallbackHandler
    // x30: return
@@ -824,9 +844,10 @@ uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {
      fmov(VABI2.D(), VTMP2.D());
    }

-    mov(ARMEmitter::XReg::x0, STATE);
+    ldrh(ARMEmitter::WReg::w0, STATE, offsetof(FEXCore::Core::CPUState, FCW));
+    mov(ARMEmitter::XReg::x1, STATE);
    if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
-      GenerateIndirectRuntimeCall<double, double, double, uint64_t>(FallbackPointerReg);
+      GenerateIndirectRuntimeCall<double, uint16_t, double, double, uint64_t>(FallbackPointerReg);
    } else {
      blr(FallbackPointerReg);
    }
@@ -986,7 +1007,7 @@ uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {

    FillF80x2Result();
  } break;
-  case FABI_F64x2_F64_PTR: {
+  case FABI_F64x2_I16_F64_PTR: {
    // Linux Reg/Win32 Reg:
    // tmp4 (x4/x13): FallbackHandler
    // x30: return
@@ -995,13 +1016,14 @@ uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {

    SpillForABICall(CTX->HostFeatures.SupportsPreserveAllABI, TMP3, true);

-    mov(ARMEmitter::XReg::x0, STATE);
+    ldrh(ARMEmitter::WReg::w0, STATE, offsetof(FEXCore::Core::CPUState, FCW));
+    mov(ARMEmitter::XReg::x1, STATE);
    if (!TMP_ABIARGS) {
      fmov(VABI1.D(), VTMP1.D());
    }

    if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
-      // GenerateIndirectRuntimeCall<FEXCore::VectorScalarF64Pair, FEXCore::VectorRegType, uint64_t>(FallbackPointerReg);
+      // GenerateIndirectRuntimeCall<FEXCore::VectorScalarF64Pair, uint16_t, FEXCore::VectorRegType, uint64_t>(FallbackPointerReg);
    } else {
      blr(FallbackPointerReg);
    }
@@ -1103,53 +1125,6 @@ void Dispatcher::InitThreadPointers(FEXCore::Core::InternalThreadState* Thread)
  }
 }

-SignalDelegatorConfig Dispatcher::MakeSignalDelegatorConfig() const {
-  // PF/AF are the final two SRA registers. We only want GPRs
-  const auto GPRCount = uint16_t(StaticRegisters.size() - 2);
-  const auto FPRCount = uint16_t(StaticFPRegisters.size());
-
-  const auto GetSRAGPRMapping = [GPRCount, this] {
-    SignalDelegatorConfig::SRAIndexMapping Mapping {};
-    for (size_t i = 0; i < GPRCount; ++i) {
-      Mapping[i] = StaticRegisters[i].Idx();
-    }
-    return Mapping;
-  };
-
-  const auto GetSRAFPRMapping = [FPRCount, this] {
-    SignalDelegatorConfig::SRAIndexMapping Mapping {};
-    for (size_t i = 0; i < FPRCount; ++i) {
-      Mapping[i] = StaticFPRegisters[i].Idx();
-    }
-    return Mapping;
-  };
-
-  return FEXCore::SignalDelegatorConfig {
-    .DispatcherBegin = Start,
-    .DispatcherEnd = End,
-
-    .AbsoluteLoopTopAddress = AbsoluteLoopTopAddress,
-    .AbsoluteLoopTopAddressFillSRA = AbsoluteLoopTopAddressFillSRA,
-    .SignalHandlerReturnAddress = SignalHandlerReturnAddress,
-    .SignalHandlerReturnAddressRT = SignalHandlerReturnAddressRT,
-
-    .PauseReturnInstruction = PauseReturnInstruction,
-    .ThreadPauseHandlerAddressSpillSRA = ThreadPauseHandlerAddressSpillSRA,
-    .ThreadPauseHandlerAddress = ThreadPauseHandlerAddress,
-
-    // Stop handlers.
-    .ThreadStopHandlerAddressSpillSRA = ThreadStopHandlerAddressSpillSRA,
-    .ThreadStopHandlerAddress = ThreadStopHandlerAddress,
-
-    // SRA information.
-    .SRAGPRCount = GPRCount,
-    .SRAFPRCount = FPRCount,
-
-    .SRAGPRMapping = GetSRAGPRMapping(),
-    .SRAFPRMapping = GetSRAFPRMapping(),
-  };
-}
-
 fextl::unique_ptr<Dispatcher> Dispatcher::Create(FEXCore::Context::ContextImpl* CTX) {
  return fextl::make_unique<Dispatcher>(CTX);
 }
@@ -2,18 +2,25 @@
 #pragma once

 #include "Interface/Core/ArchHelpers/Arm64Emitter.h"
+#include "Interface/Core/CPUBackend.h"
 #include "Interface/Core/Interpreter/InterpreterOps.h"

+#include <FEXCore/Core/CoreState.h>
 #include <FEXCore/fextl/memory.h>

-#include <array>
-#include <cstddef>
+#ifdef VIXL_SIMULATOR
+#include <aarch64/simulator-aarch64.h>
+#endif
+
 #include <cstdint>
+#include <signal.h>
+#include <stddef.h>
+#include <stack>
+#include <tuple>

 namespace FEXCore {
 struct GuestSigAction;
-struct SignalDelegatorConfig;
-} // namespace FEXCore
+}

 namespace FEXCore::Core {
 struct CpuStateFrame;
@@ -35,32 +42,6 @@ public:
  Dispatcher(FEXCore::Context::ContextImpl* ctx);
  ~Dispatcher();

-  void InitThreadPointers(FEXCore::Core::InternalThreadState* Thread);
-
-#ifdef VIXL_SIMULATOR
-  void ExecuteDispatch(FEXCore::Core::CpuStateFrame* Frame);
-  void ExecuteJITCallback(FEXCore::Core::CpuStateFrame* Frame, uint64_t RIP);
-#else
-  void ExecuteDispatch(FEXCore::Core::CpuStateFrame* Frame) {
-    DispatchPtr(Frame, false);
-  }
-
-  void ExecuteJITCallback(FEXCore::Core::CpuStateFrame* Frame, uint64_t RIP) {
-    CallbackPtr(Frame, RIP);
-  }
-#endif
-
-  SignalDelegatorConfig MakeSignalDelegatorConfig() const;
-
-protected:
-  FEXCore::Context::ContextImpl* CTX;
-
-  using AsmDispatch = void (*)(FEXCore::Core::CpuStateFrame* Frame, bool SingleInst);
-  using JITCallback = void (*)(FEXCore::Core::CpuStateFrame* Frame, uint64_t RIP);
-
-  AsmDispatch DispatchPtr;
-  JITCallback CallbackPtr;
-private:
  /**
   * @name Dispatch Helper functions
   * @{ */
@@ -78,14 +59,62 @@ private:
  uint64_t GuestSignal_SIGILL {};
  uint64_t GuestSignal_SIGTRAP {};
  uint64_t GuestSignal_SIGSEGV {};
+  uint64_t IntCallbackReturnAddress {};

  uint64_t PauseReturnInstruction {};
  std::array<uint64_t, FallbackABI::FABI_UNKNOWN> ABIPointers {};
+
  /**  @} */

  uint64_t Start {};
  uint64_t End {};

+  void InitThreadPointers(FEXCore::Core::InternalThreadState* Thread);
+
+#ifdef VIXL_SIMULATOR
+  void ExecuteDispatch(FEXCore::Core::CpuStateFrame* Frame);
+  void ExecuteJITCallback(FEXCore::Core::CpuStateFrame* Frame, uint64_t RIP);
+#else
+  void ExecuteDispatch(FEXCore::Core::CpuStateFrame* Frame) {
+    DispatchPtr(Frame, false);
+  }
+
+  void ExecuteJITCallback(FEXCore::Core::CpuStateFrame* Frame, uint64_t RIP) {
+    CallbackPtr(Frame, RIP);
+  }
+#endif
+
+  uint16_t GetSRAGPRCount() const {
+    // PF/AF are the final two SRA registers.
+    // Only return the SRA for GPRs.
+    return StaticRegisters.size() - 2;
+  }
+
+  uint16_t GetSRAFPRCount() const {
+    return StaticFPRegisters.size();
+  }
+
+  void GetSRAGPRMapping(uint8_t Mapping[16]) const {
+    for (size_t i = 0; i < StaticRegisters.size() - 2; ++i) {
+      Mapping[i] = StaticRegisters[i].Idx();
+    }
+  }
+
+  void GetSRAFPRMapping(uint8_t Mapping[16]) const {
+    for (size_t i = 0; i < StaticFPRegisters.size(); ++i) {
+      Mapping[i] = StaticFPRegisters[i].Idx();
+    }
+  }
+
+protected:
+  FEXCore::Context::ContextImpl* CTX;
+
+  using AsmDispatch = void (*)(FEXCore::Core::CpuStateFrame* Frame, bool SingleInst);
+  using JITCallback = void (*)(FEXCore::Core::CpuStateFrame* Frame, uint64_t RIP);
+
+  AsmDispatch DispatchPtr;
+  JITCallback CallbackPtr;
+private:
  // Long division helpers
  uint64_t LUDIVHandlerAddress {};
  uint64_t LDIVHandlerAddress {};
@@ -71,23 +71,7 @@ Decoder::Decoder(FEXCore::Core::InternalThreadState* Thread)
  : Thread {Thread}
  , CTX {static_cast<FEXCore::Context::ContextImpl*>(Thread->CTX)}
  , OSABI {CTX->SyscallHandler ? CTX->SyscallHandler->GetOSABI() : FEXCore::HLE::SyscallOSABI::OS_UNKNOWN}
-  , PoolObject {CTX->FrontendAllocator, sizeof(FEXCore::X86Tables::DecodedInst) * DefaultDecodedBufferSize} {
-
-  FEX_CONFIG_OPT(ReducedPrecision, X87REDUCEDPRECISION);
-  if (ReducedPrecision) {
-    X87Table = &FEXCore::X86Tables::X87F64Ops;
-  } else {
-    X87Table = &FEXCore::X86Tables::X87F80Ops;
-  }
-
-  if (CTX->HostFeatures.SupportsAVX && CTX->HostFeatures.SupportsSVE256) {
-    VEXTable = &FEXCore::X86Tables::VEXTableOps;
-    VEXTableGroup = &FEXCore::X86Tables::VEXTableGroupOps;
-  } else if (CTX->HostFeatures.SupportsAVX) {
-    VEXTable = &FEXCore::X86Tables::VEXTableOps_AVX128;
-    VEXTableGroup = &FEXCore::X86Tables::VEXTableGroupOps_AVX128;
-  }
-}
+  , PoolObject {CTX->FrontendAllocator, sizeof(FEXCore::X86Tables::DecodedInst) * DefaultDecodedBufferSize} {}

 bool Decoder::CheckRangeExecutable(uint64_t Address, uint64_t Size) {
  // Treat FEX-internal X86 callbacks as always executable
@@ -99,7 +83,6 @@ bool Decoder::CheckRangeExecutable(uint64_t Address, uint64_t Size) {
    auto RangeInfo = CTX->SyscallHandler->QueryGuestExecutableRange(Thread, Address);
    ExecutableRangeBase = RangeInfo.Base;
    ExecutableRangeEnd = RangeInfo.Base + RangeInfo.Size;
-    ExecutableRangeWritable = RangeInfo.Writable;

    if (RangeInfo.Size == 0) {
      return false;
@@ -259,13 +242,13 @@ void Decoder::DecodeModRM_64(X86Tables::DecodedOperand* Operand, X86Tables::ModR

  if (HasSIB) {
    FEXCore::X86Tables::SIBDecoded SIB;
-    if (DecodeInst->Flags & DecodeFlags::FLAG_DECODED_SIB) {
+    if (DecodeInst->DecodedSIB) {
      SIB.Hex = DecodeInst->SIB;
    } else {
      // Haven't yet grabbed SIB, pull it now
      DecodeInst->SIB = ReadByte();
      SIB.Hex = DecodeInst->SIB;
-      DecodeInst->Flags |= DecodeFlags::FLAG_DECODED_SIB;
+      DecodeInst->DecodedSIB = true;
    }

    // If the SIB base is 0b101, aka BP or R13 then we have a 32bit displacement
@@ -331,13 +314,6 @@ void Decoder::DecodeModRM_64(X86Tables::DecodedOperand* Operand, X86Tables::ModR
 }

 bool Decoder::NormalOp(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op, DecodedHeader Options) {
-  if (Info->Type == FEXCore::X86Tables::TYPE_ARCH_DISPATCHER) [[unlikely]] {
-    // Dispatcher Op.
-    // TODO: Move this in to `NormalOpHeader`, Dispatch tables have a bug currently where some subtables don't inherit flags correctly.
-    // Can be seen by running FEX asm tests if this is removed.
-    return NormalOp(&Info->OpcodeDispatcher.Indirect[BlockInfo.Is64BitMode ? 1 : 0], Op);
-  }
-
  DecodeInst->OP = Op;
  DecodeInst->TableInfo = Info;

@@ -401,9 +377,9 @@ bool Decoder::NormalOp(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op,

  // If we require ModRM and haven't decoded it yet, do it now
  // Some instructions have to read modrm upfront, others do it later
-  if (HasMODRM && !(DecodeInst->Flags & DecodeFlags::FLAG_DECODED_MODRM)) {
+  if (HasMODRM && !DecodeInst->DecodedModRM) {
    DecodeInst->ModRM = ReadByte();
-    DecodeInst->Flags |= DecodeFlags::FLAG_DECODED_MODRM;
+    DecodeInst->DecodedModRM = true;
  }

  // New instruction size decoding
@@ -436,8 +412,9 @@ bool Decoder::NormalOp(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op,
      // If the default operating mode is 32bit and we have the operand size flag then the operating size drops to 16bit
      DecodeInst->Flags |= DecodeFlags::GenSizeDstSize(DecodeFlags::SIZE_16BIT);
      DestSize = 2;
-    } else if ((HasXMMDst || HasMMDst || BlockInfo.Is64BitMode) && (HasWideningDisplacement || DstSizeFlag == FEXCore::X86Tables::InstFlags::SIZE_64BIT ||
-                                                                    DstSizeFlag == FEXCore::X86Tables::InstFlags::SIZE_64BITDEF)) {
+    } else if ((HasXMMDst || HasMMDst || BlockInfo.Is64BitMode) &&
+               (HasWideningDisplacement || DstSizeFlag == FEXCore::X86Tables::InstFlags::SIZE_64BIT ||
+                DstSizeFlag == FEXCore::X86Tables::InstFlags::SIZE_64BITDEF)) {
      DecodeInst->Flags |= DecodeFlags::GenSizeDstSize(DecodeFlags::SIZE_64BIT);
      DestSize = 8;
    } else {
@@ -464,8 +441,9 @@ bool Decoder::NormalOp(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op,
      // See table 1-2. Operand-Size Overrides for this decoding
      // If the default operating mode is 32bit and we have the operand size flag then the operating size drops to 16bit
      DecodeInst->Flags |= DecodeFlags::GenSizeSrcSize(DecodeFlags::SIZE_16BIT);
-    } else if ((HasXMMSrc || HasMMSrc || BlockInfo.Is64BitMode) && (HasWideningDisplacement || SrcSizeFlag == FEXCore::X86Tables::InstFlags::SIZE_64BIT ||
-                                                                    SrcSizeFlag == FEXCore::X86Tables::InstFlags::SIZE_64BITDEF)) {
+    } else if ((HasXMMSrc || HasMMSrc || BlockInfo.Is64BitMode) &&
+               (HasWideningDisplacement || SrcSizeFlag == FEXCore::X86Tables::InstFlags::SIZE_64BIT ||
+                SrcSizeFlag == FEXCore::X86Tables::InstFlags::SIZE_64BITDEF)) {
      DecodeInst->Flags |= DecodeFlags::GenSizeSrcSize(DecodeFlags::SIZE_64BIT);
    } else {
      DecodeInst->Flags |= DecodeFlags::GenSizeSrcSize(DecodeFlags::SIZE_32BIT);
@@ -634,20 +612,11 @@ bool Decoder::NormalOp(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op,
        Literal = static_cast<int32_t>(Literal);
      }
      DecodeInst->Src[CurrentSrc].Data.Literal.Size = DestSize;
-      DecodeInst->Src[CurrentSrc].Data.Literal.SignExtend = true;
-    }
-
-    DecodeInst->Src[CurrentSrc].Type = DecodedOperand::OpType::Literal;
-    DecodeInst->Src[CurrentSrc].Data.Literal.Value = Literal;
-    ++CurrentSrc;
-
-    if (Bytes == 8) [[unlikely]] {
-      DecodeInst->Src[CurrentSrc].Data.Literal.Size = 4;
-      DecodeInst->Src[CurrentSrc].Type = DecodedOperand::OpType::Literal;
-      DecodeInst->Src[CurrentSrc].Data.Literal.Value = Literal >> 32;
    }

    Bytes = 0;
+    DecodeInst->Src[CurrentSrc].Type = DecodedOperand::OpType::Literal;
+    DecodeInst->Src[CurrentSrc].Data.Literal.Value = Literal;
  }

  LOGMAN_THROW_A_FMT(Bytes == 0, "Inst at 0x{:x}: 0x{:04x} '{}' Had an instruction of size {} with {} remaining", DecodeInst->PC,
@@ -657,7 +626,7 @@ bool Decoder::NormalOp(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op,
 }

 bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op) {
-  DecodeInst->OPRaw = DecodeInst->OP = Op;
+  DecodeInst->OP = Op;
  DecodeInst->TableInfo = Info;

  if (Info->Type == FEXCore::X86Tables::TYPE_UNKNOWN) {
@@ -673,13 +642,10 @@ bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16
  // A normal instruction is the most likely.
  if (Info->Type == FEXCore::X86Tables::TYPE_INST) [[likely]] {
    return NormalOp(Info, Op);
-  } else if (Info->Type == FEXCore::X86Tables::TYPE_ARCH_DISPATCHER) [[unlikely]] {
-    // Dispatcher Op.
-    return NormalOp(&Info->OpcodeDispatcher.Indirect[BlockInfo.Is64BitMode ? 1 : 0], Op);
  } else if (Info->Type >= FEXCore::X86Tables::TYPE_GROUP_1 && Info->Type <= FEXCore::X86Tables::TYPE_GROUP_11) {
    uint8_t ModRMByte = ReadByte();
    DecodeInst->ModRM = ModRMByte;
-    DecodeInst->Flags |= DecodeFlags::FLAG_DECODED_MODRM;
+    DecodeInst->DecodedModRM = true;

    FEXCore::X86Tables::ModRMDecoded ModRM;
    ModRM.Hex = DecodeInst->ModRM;
@@ -696,24 +662,24 @@ bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16
    constexpr uint16_t PF_F2 = 3;

    uint16_t PrefixType = PF_NONE;
-    if (LastEscapePrefix == 0xF3) {
+    if (DecodeInst->LastEscapePrefix == 0xF3) {
      PrefixType = PF_F3;
-    } else if (LastEscapePrefix == 0xF2) {
+    } else if (DecodeInst->LastEscapePrefix == 0xF2) {
      PrefixType = PF_F2;
-    } else if (LastEscapePrefix == 0x66) {
+    } else if (DecodeInst->LastEscapePrefix == 0x66) {
      PrefixType = PF_66;
    }

    // We have ModRM
    uint8_t ModRMByte = ReadByte();
    DecodeInst->ModRM = ModRMByte;
-    DecodeInst->Flags |= DecodeFlags::FLAG_DECODED_MODRM;
+    DecodeInst->DecodedModRM = true;

    FEXCore::X86Tables::ModRMDecoded ModRM;
    ModRM.Hex = DecodeInst->ModRM;

    uint16_t LocalOp = OPD(Info->Type, PrefixType, ModRM.reg);
-    const FEXCore::X86Tables::X86InstInfo* LocalInfo = &SecondInstGroupOps[LocalOp];
+    FEXCore::X86Tables::X86InstInfo* LocalInfo = &SecondInstGroupOps[LocalOp];
 #undef OPD
    if (LocalInfo->Type == FEXCore::X86Tables::TYPE_SECOND_GROUP_MODRM && ModRM.mod == 0b11) {
      // Everything in this group is privileged instructions aside from XGETBV
@@ -734,16 +700,11 @@ bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16
    // We have ModRM
    uint8_t ModRMByte = ReadByte();
    DecodeInst->ModRM = ModRMByte;
-    DecodeInst->Flags |= DecodeFlags::FLAG_DECODED_MODRM;
+    DecodeInst->DecodedModRM = true;

    uint16_t X87Op = ((Op - 0xD8) << 8) | ModRMByte;
-    return NormalOp(&(*X87Table)[X87Op], X87Op);
+    return NormalOp(&X87Ops[X87Op], X87Op);
  } else if (Info->Type == FEXCore::X86Tables::TYPE_VEX_TABLE_PREFIX) {
-    if (!VEXTable) {
-      // AVX not enabled.
-      return false;
-    }
-
    uint16_t map_select = 1;
    uint16_t pp = 0;
    const uint8_t Byte1 = ReadByte();
@@ -781,6 +742,7 @@ bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16
        DecodeInst->Flags |= DecodeFlags::FLAG_OPTION_AVX_W;
      }
      if (!(map_select >= 1 && map_select <= 3)) {
+        LogMan::Msg::EFmt("We don't understand a map_select of: {}", map_select);
        return false;
      }
    }
@@ -790,13 +752,13 @@ bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16
    Op = OPD(map_select, pp, VEXOp);
 #undef OPD

-    const FEXCore::X86Tables::X86InstInfo* LocalInfo = &(*VEXTable)[Op];
+    FEXCore::X86Tables::X86InstInfo* LocalInfo = &VEXTableOps[Op];

    if (LocalInfo->Type >= FEXCore::X86Tables::TYPE_VEX_GROUP_12 && LocalInfo->Type <= FEXCore::X86Tables::TYPE_VEX_GROUP_17) {
      // We have ModRM
      uint8_t ModRMByte = ReadByte();
      DecodeInst->ModRM = ModRMByte;
-      DecodeInst->Flags |= DecodeFlags::FLAG_DECODED_MODRM;
+      DecodeInst->DecodedModRM = true;

      FEXCore::X86Tables::ModRMDecoded ModRM;
      ModRM.Hex = DecodeInst->ModRM;
@@ -804,7 +766,7 @@ bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16
 #define OPD(group, pp, opcode) (((group - TYPE_VEX_GROUP_12) << 4) | (pp << 3) | (opcode))
      Op = OPD(LocalInfo->Type, pp, ModRM.reg);
 #undef OPD
-      return NormalOp(&(*VEXTableGroup)[Op], Op, options);
+      return NormalOp(&VEXTableGroupOps[Op], Op, options);
    } else {
      return NormalOp(LocalInfo, Op, options);
    }
@@ -820,7 +782,6 @@ bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16

 bool Decoder::DecodeInstructionImpl(uint64_t PC) {
  InstructionSize = 0;
-  LastEscapePrefix = 0;
  Instruction.fill(0);

  DecodeInst = &DecodedBuffer[DecodedSize];
@@ -842,7 +803,7 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
          // Decode ModRM
          uint8_t ModRMByte = ReadByte();
          DecodeInst->ModRM = ModRMByte;
-          DecodeInst->Flags |= DecodeFlags::FLAG_DECODED_MODRM;
+          DecodeInst->DecodedModRM = true;

          FEXCore::X86Tables::ModRMDecoded ModRM;
          ModRM.Hex = DecodeInst->ModRM;
@@ -881,7 +842,7 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
        uint16_t LocalOp = (Prefix << 8) | ReadByte();

        bool NoOverlay66 = (FEXCore::X86Tables::H0F38TableOps[LocalOp].Flags & InstFlags::FLAGS_NO_OVERLAY66) != 0;
-        if (LastEscapePrefix == 0x66 && NoOverlay66) { // Operand Size
+        if (DecodeInst->LastEscapePrefix == 0x66 && NoOverlay66) { // Operand Size
          // Remove prefix so it doesn't effect calculations.
          // This is only an escape prefix rather than modifier now
          DecodeInst->Flags &= ~DecodeFlags::FLAG_OPERAND_SIZE;
@@ -897,7 +858,7 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
        constexpr uint16_t PF_3A_REX = (1 << 1);

        uint16_t Prefix = PF_3A_NONE;
-        if (LastEscapePrefix == 0x66) { // Operand Size
+        if (DecodeInst->LastEscapePrefix == 0x66) { // Operand Size
          Prefix = PF_3A_66;
        }

@@ -923,17 +884,17 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {

          if (NoOverlay) { // This section of the table ignores prefix extention
            return NormalOpHeader(&FEXCore::X86Tables::SecondBaseOps[EscapeOp], EscapeOp);
-          } else if (LastEscapePrefix == 0xF3) { // REP
+          } else if (DecodeInst->LastEscapePrefix == 0xF3) { // REP
            // Remove prefix so it doesn't effect calculations.
            // This is only an escape prefix rather tan modifier now
            DecodeInst->Flags &= ~DecodeFlags::FLAG_REP_PREFIX;
            return NormalOpHeader(&FEXCore::X86Tables::RepModOps[EscapeOp], EscapeOp);
-          } else if (LastEscapePrefix == 0xF2) { // REPNE
+          } else if (DecodeInst->LastEscapePrefix == 0xF2) { // REPNE
            // Remove prefix so it doesn't effect calculations.
            // This is only an escape prefix rather tan modifier now
            DecodeInst->Flags &= ~DecodeFlags::FLAG_REPNE_PREFIX;
            return NormalOpHeader(&FEXCore::X86Tables::RepNEModOps[EscapeOp], EscapeOp);
-          } else if (LastEscapePrefix == 0x66 && !NoOverlay66) { // Operand Size
+          } else if (DecodeInst->LastEscapePrefix == 0x66 && !NoOverlay66) { // Operand Size
            // Remove prefix so it doesn't effect calculations.
            // This is only an escape prefix rather tan modifier now
            DecodeInst->Flags &= ~DecodeFlags::FLAG_OPERAND_SIZE;
@@ -949,7 +910,7 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
    }
    case 0x66: // Operand Size prefix
      DecodeInst->Flags |= DecodeFlags::FLAG_OPERAND_SIZE;
-      LastEscapePrefix = Op;
+      DecodeInst->LastEscapePrefix = Op;
      DecodeFlags::PushOpAddr(&DecodeInst->Flags, DecodeFlags::FLAG_OPERAND_SIZE_LAST);
      break;
    case 0x67: // Address Size override prefix
@@ -980,11 +941,11 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
      break;
    case 0xF2: // REPNE prefix
      DecodeInst->Flags |= DecodeFlags::FLAG_REPNE_PREFIX;
-      LastEscapePrefix = Op;
+      DecodeInst->LastEscapePrefix = Op;
      break;
    case 0xF3: // REP prefix
      DecodeInst->Flags |= DecodeFlags::FLAG_REP_PREFIX;
-      LastEscapePrefix = Op;
+      DecodeInst->LastEscapePrefix = Op;
      break;
    case 0x64: // FS prefix
      DecodeInst->Flags = (DecodeInst->Flags & ~FEXCore::X86Tables::DecodeFlags::FLAG_SEGMENTS) | DecodeFlags::FLAG_FS_PREFIX;
@@ -994,10 +955,7 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
      break;
    default:
      [[likely]] { // Default base table
-        const X86InstInfo* Info = &FEXCore::X86Tables::BaseOps[Op];
-        if (Info->Type == FEXCore::X86Tables::TYPE_ARCH_DISPATCHER) {
-          Info = &Info->OpcodeDispatcher.Indirect[BlockInfo.Is64BitMode ? 1 : 0];
-        }
+        auto Info = &FEXCore::X86Tables::BaseOps[Op];

        if (Info->Type == FEXCore::X86Tables::TYPE_REX_PREFIX) {
          DecodeInst->Flags |= DecodeFlags::FLAG_REX_PREFIX;
@@ -1049,27 +1007,11 @@ Decoder::DecodedBlockStatus Decoder::DecodeInstruction(uint64_t PC) {
    DecodeInst->TableInfo = nullptr;
    DecodeInst->InstSize = 0;
    return ErrorDuringDecoding ? DecodedBlockStatus::INVALID_INST : DecodedBlockStatus::NOEXEC_INST;
-  } else if (!DecodeInst->TableInfo || (DecodeInst->TableInfo->Type == TYPE_INST && !DecodeInst->TableInfo->OpcodeDispatcher.OpDispatch)) {
+  } else if (!DecodeInst->TableInfo || !DecodeInst->TableInfo->OpcodeDispatcher) {
    // If there wasn't an error during decoding but we have no dispatcher for the instruction then claim invalid instruction.
    return DecodedBlockStatus::INVALID_INST;
  }

-  if (CTX->AreMonoHacksActive()) {
-    // Unity uses a standard SPSC ringbuffer with cached read/write pointers and thread waiting flags at the following
-    // offsets, which are consistent between 32-bit and 64-bit Unity versions from 2015 onwards.
-    auto IsKnownAtomicDisplacement = [](uint64_t Displacement) {
-      return Displacement == 0x80 || Displacement == 0x84 || Displacement == 0xC0 || Displacement == 0xC4;
-    };
-
-    if (DecodeInst->OP == 0x8b && DecodeInst->Src[0].IsGPRIndirect() &&
-        IsKnownAtomicDisplacement(DecodeInst->Src[0].Data.GPRIndirect.Displacement)) {
-      DecodeInst->Flags |= X86Tables::DecodeFlags::FLAG_FORCE_TSO;
-    }
-    if (DecodeInst->OP == 0x89 && DecodeInst->Dest.IsGPRIndirect() && IsKnownAtomicDisplacement(DecodeInst->Dest.Data.GPRIndirect.Displacement)) {
-      DecodeInst->Flags |= X86Tables::DecodeFlags::FLAG_FORCE_TSO;
-    }
-  }
-
  return DecodedBlockStatus::SUCCESS;
 }

@@ -1085,13 +1027,6 @@ void Decoder::BranchTargetInMultiblockRange() {
  const auto InstEnd = DecodeInst->PC + DecodeInst->InstSize;

  if (DecodeInst->TableInfo->Flags & FEXCore::X86Tables::InstFlags::FLAGS_CALL) {
-    if (ExecutableRangeWritable && CTX->AreMonoHacksActive()) {
-      // Mono generated code often contains noreturn calls with garbage following them, and calls are always backpatched
-      // after CIL compilation leading to n recompiles for a multiblock with n calls. Choose to minimize stutters over
-      // raw performance and disable tracking past calls for mono generated code.
-      return;
-    }
-
    AddBranchTarget(InstEnd);
    BlockInfo.EntryPoints.emplace(InstEnd);
    return;
@@ -1123,16 +1058,10 @@ void Decoder::BranchTargetInMultiblockRange() {
    TargetRIP &= 0xFFFFFFFFU;
  }

-  if (Conditional) {
-    // If we are conditional then a target can be the instruction past the conditional instruction
-    AddBranchTarget(InstEnd);
-  }
-
  // If the target RIP is x86 code within the symbol ranges then we are golden
-  // Forbid distant branches to have the cost code better match the guest code layout, avoiding massive (range-wise) code
-  // blocks in highly fragmented guest code. Such branches are often not-taken branches to garbage in obfuscated code.
-  constexpr uint64_t MAX_FORWARD_BRANCH_DIST = FEXCore::Utils::FEX_PAGE_SIZE * 4;
-  bool ValidMultiblockMember = TargetRIP >= SymbolMinAddress && TargetRIP < std::min(InstEnd + MAX_FORWARD_BRANCH_DIST, SymbolMaxAddress);
+  // Forbid cross-page branches to both avoid massive (range-wise) code blocks in highly fragmented code and trying to decode unmapped branch targets
+  bool ValidMultiblockMember =
+    TargetRIP >= SymbolMinAddress && TargetRIP < std::min(FEXCore::AlignUp(InstEnd, FEXCore::Utils::FEX_PAGE_SIZE), SymbolMaxAddress);

 #ifdef _M_ARM_64EC
  ValidMultiblockMember = ValidMultiblockMember && !RtlIsEcCode(TargetRIP);
@@ -1143,6 +1072,9 @@ void Decoder::BranchTargetInMultiblockRange() {
    if (Conditional) {
      MaxCondBranchForward = std::max(MaxCondBranchForward, TargetRIP);
      MaxCondBranchBackwards = std::min(MaxCondBranchBackwards, TargetRIP);
+
+      // If we are conditional then a target can be the instruction past the conditional instruction
+      AddBranchTarget(InstEnd);
    }

    AddBranchTarget(TargetRIP);
@@ -1153,60 +1085,6 @@ void Decoder::BranchTargetInMultiblockRange() {
  }
 }

-bool Decoder::IsBranchMonoTailcall(uint64_t NumInstructions) const {
-  // While the mono call backpatching block can easily be detected due it being the only one to contain SMC-faulting
-  // atomics, that can't be said for the tailcall jump backpatcher which has changed several times across versions and
-  // can be partially inlined. To work around this, instead detect the tailcall site itself and force full non-signal-based
-  // SMC detection for that single block.
-  if (!ExecutableRangeWritable) {
-    // We only care about jitted code
-    return false;
-  }
-
-  // See mini-{amd64,x86}.c in the mono codebase, specifically where METHOD_JUMP patches are emitted.
-  if (GetGPROpSize() == IR::OpSize::i32Bit) {
-    // Matches:
-    // LEAVE
-    // <none> / NOP / MOV EAX, EAX / LEA EBP, [EBP+0]
-    // JMP imm32
-    if (DecodeInst->OP != 0xE9 || NumInstructions < 2) {
-      return false;
-    }
-
-    auto PrevInst = std::prev(DecodeInst);
-    if (PrevInst->OP == 0xC9) {
-      return true;
-    }
-
-    if (NumInstructions < 3 || std::prev(PrevInst)->OP != 0xC9) {
-      return false;
-    }
-
-    return PrevInst->OP == 0x90 || (PrevInst->OP == 0x8B && PrevInst->ModRM == 0xC0) ||
-           (PrevInst->OP == 0x8D && PrevInst->ModRM == 0x6D && PrevInst->Src[1].IsLiteral() && PrevInst->Src[1].Literal() == 0);
-  } else {
-    FEXCore::X86Tables::ModRMDecoded ModRM;
-    ModRM.Hex = DecodeInst->ModRM;
-    if (DecodeInst->OPRaw == 0xFF && ModRM.reg == 4 && DecodeInst->Src[0].IsGPR()) {
-      if (DecodeInst->Src[0].Data.GPR.GPR == FEXCore::X86State::REG_RAX) {
-        // Found in versions of mono from 2024 onwards - matches:
-        // REX.W JMP rax
-        return (DecodeInst->Flags & (DecodeFlags::FLAG_REX_PREFIX | DecodeFlags::FLAG_REX_WIDENING | DecodeFlags::FLAG_REX_XGPR_B |
-                                     DecodeFlags::FLAG_REX_XGPR_X | DecodeFlags::FLAG_REX_XGPR_R)) ==
-               (DecodeFlags::FLAG_REX_PREFIX | DecodeFlags::FLAG_REX_WIDENING);
-      } else if (NumInstructions > 1 && DecodeInst->Src[0].Data.GPR.GPR == FEXCore::X86State::REG_R11) {
-        // Found in older versions of mono - match:
-        // MOV r11, imm64
-        // JMP r11
-        auto PrevInst = std::prev(DecodeInst);
-        return PrevInst->OP == 0xBB && PrevInst->Dest.IsGPR() && PrevInst->Dest.Data.GPR.GPR == FEXCore::X86State::REG_R11;
-      }
-    }
-  }
-
-  return false;
-}
-
 bool Decoder::InstCanContinue() const {
  if (DecodeInst->PC + DecodeInst->InstSize == NextBlockStartAddress) {
    return false;
@@ -1309,7 +1187,7 @@ const uint8_t* Decoder::AdjustAddrForSpecialRegion(const uint8_t* _InstStream, u
  return _InstStream - EntryPoint + RIP;
 }

-void Decoder::DecodeInstructionsAtEntry(FEXCore::Core::InternalThreadState* Thread, const uint8_t* _InstStream, uint64_t PC, uint64_t MaxInst) {
+void Decoder::DecodeInstructionsAtEntry(FEXCore::Core::InternalThreadState *Thread, const uint8_t* _InstStream, uint64_t PC, uint64_t MaxInst) {
  FEXCORE_PROFILE_SCOPED("DecodeInstructions");
  BlockInfo.TotalInstructionCount = 0;
  BlockInfo.Blocks.clear();
@@ -1321,8 +1199,8 @@ void Decoder::DecodeInstructionsAtEntry(FEXCore::Core::InternalThreadState* Thre
  DecodedBuffer = PoolObject.ReownOrClaimBuffer();

  // Decode operating mode from thread's CS segment.
-  const auto CSSegment = Core::CPUState::GetSegmentFromIndex(Thread->CurrentFrame->State, Thread->CurrentFrame->State.cs_idx);
-  BlockInfo.Is64BitMode = CSSegment->L == 1;
+  const auto CSSegment = Thread->CurrentFrame->State.gdt[Thread->CurrentFrame->State.cs_idx >> 3];
+  BlockInfo.Is64BitMode = CSSegment.L == 1;
  LOGMAN_THROW_A_FMT(BlockInfo.Is64BitMode == CTX->Config.Is64BitMode, "Expected operating mode to not change at runtime!");

  // XXX: Load symbol data
@@ -1467,7 +1345,6 @@ void Decoder::DecodeInstructionsAtEntry(FEXCore::Core::InternalThreadState* Thre
          // If the branch target is within our multiblock range then we can keep going on
          // We don't want to short circuit this since we want to calculate our ranges still
          // NOTE: This will invalidate BlockIt, this is fine as we immediately break from the loop and EraseBlock cannot be true
-          BlockIt->ForceFullSMCDetection = CTX->AreMonoHacksActive() && IsBranchMonoTailcall(BlockIt->NumInstructions);
          BranchTargetInMultiblockRange();
        }

@@ -4,21 +4,18 @@
 #include "Interface/Core/X86Tables/X86Tables.h"
 #include "Interface/IR/IR.h"

-#include <FEXCore/Utils/ThreadPoolAllocator.h>
+#include <FEXCore/HLE/SyscallHandler.h>
+#include <FEXCore/Utils/Telemetry.h>
 #include <FEXCore/fextl/set.h>
 #include <FEXCore/fextl/vector.h>

 #include <array>
-#include <cstddef>
 #include <cstdint>
-#include <optional>
+#include <stddef.h>

 namespace FEXCore::Context {
 class ContextImpl;
 }
-namespace FEXCore::HLE {
-enum class SyscallOSABI;
-}

 namespace FEXCore::Frontend {
 class Decoder final {
@@ -37,7 +34,6 @@ public:
    FEXCore::X86Tables::DecodedInst* DecodedInstructions;
    DecodedBlockStatus BlockStatus;
    bool IsEntryPoint {};
-    bool ForceFullSMCDetection {};
  };

  struct DecodedBlockInformation final {
@@ -49,7 +45,7 @@ public:
  };

  Decoder(FEXCore::Core::InternalThreadState* Thread);
-  void DecodeInstructionsAtEntry(FEXCore::Core::InternalThreadState* Thread, const uint8_t* InstStream, uint64_t PC, uint64_t MaxInst);
+  void DecodeInstructionsAtEntry(FEXCore::Core::InternalThreadState *Thread, const uint8_t* InstStream, uint64_t PC, uint64_t MaxInst);

  const DecodedBlockInformation* GetDecodedBlockInfo() const {
    return &BlockInfo;
@@ -90,7 +86,6 @@ private:
  DecodedBlockStatus DecodeInstruction(uint64_t PC);

  void BranchTargetInMultiblockRange();
-  bool IsBranchMonoTailcall(uint64_t NumInstructions) const;
  bool InstCanContinue() const;

  void AddBranchTarget(uint64_t Target);
@@ -114,7 +109,6 @@ private:

  uint64_t ExecutableRangeBase {};
  uint64_t ExecutableRangeEnd {};
-  bool ExecutableRangeWritable {};
  bool HitNonExecutableRange {};

  const uint8_t* InstStream {};
@@ -125,7 +119,6 @@ private:
  static constexpr size_t MAX_INST_SIZE = 15;
  uint8_t InstructionSize {};
  std::array<uint8_t, MAX_INST_SIZE> Instruction;
-  uint8_t LastEscapePrefix {};
  FEXCore::X86Tables::DecodedInst* DecodeInst;

  // This is for multiblock data tracking
@@ -154,11 +147,6 @@ private:
    &FEXCore::Frontend::Decoder::DecodeModRM_16,
  };

-  const std::array<X86Tables::X86InstInfo, X86Tables::MAX_X87_TABLE_SIZE>* X87Table;
-
-  const std::array<X86Tables::X86InstInfo, X86Tables::MAX_VEX_TABLE_SIZE>* VEXTable {};
-  const std::array<X86Tables::X86InstInfo, X86Tables::MAX_VEX_GROUP_TABLE_SIZE>* VEXTableGroup {};
-
  const uint8_t* AdjustAddrForSpecialRegion(const uint8_t* _InstStream, uint64_t EntryPoint, uint64_t RIP);
 };
 } // namespace FEXCore::Frontend
@@ -2,13 +2,11 @@
 #pragma once
 #include "Common/SoftFloat.h"

-#include "Interface/Context/Context.h"
 #include "Interface/Core/Interpreter/Fallbacks/FallbackOpHandler.h"
 #include "Interface/IR/IR.h"

 #include <FEXCore/Debug/InternalThreadState.h>
 #include <FEXCore/Utils/SHMStats.h>
-#include <FEXCore/Config/Config.h>

 namespace FEXCore::CPU {
 FEXCORE_PRESERVE_ALL_ATTR static softfloat_state SoftFloatStateFromFCW(uint16_t FCW, bool Force80BitPrecision = false) {
@@ -79,12 +77,6 @@ struct OpHandlers<IR::OP_F80CVTTO> {
  FEXCORE_PRESERVE_ALL_ATTR static VectorRegType handle8(uint16_t FCW, double src, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    ScopedSoftFloatState State {FCW, Frame};
-    auto Context = static_cast<Context::ContextImpl*>(Frame->Thread->CTX);
-    auto ReducedPrecisionMode = Context->Config.x87ReducedPrecision;
-    auto StrictReducedPrecisionMode = Context->Config.x87StrictReducedPrecision;
-    if (!ReducedPrecisionMode || StrictReducedPrecisionMode) {
-      return X80SoftFloat::FromF64_PreserveNaN(&State.State, src);
-    }
    return X80SoftFloat(&State.State, src);
  }
 };
@@ -123,12 +115,6 @@ struct OpHandlers<IR::OP_F80CVT> {
  FEXCORE_PRESERVE_ALL_ATTR static double handle8(uint16_t FCW, VectorRegType src, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    ScopedSoftFloatState State {FCW, Frame};
-    auto Context = static_cast<Context::ContextImpl*>(Frame->Thread->CTX);
-    auto ReducedPrecisionMode = Context->Config.x87ReducedPrecision;
-    auto StrictReducedPrecisionMode = Context->Config.x87StrictReducedPrecision;
-    if (!ReducedPrecisionMode || StrictReducedPrecisionMode) {
-      return X80SoftFloat(src).ToF64_PreserveNan(&State.State);
-    }
    return X80SoftFloat(src).ToF64(&State.State);
  }
 };
@@ -354,7 +340,7 @@ struct OpHandlers<IR::OP_F80SCALE> {

 template<>
 struct OpHandlers<IR::OP_F64SIN> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    return sin(src);
  }
@@ -362,7 +348,7 @@ struct OpHandlers<IR::OP_F64SIN> {

 template<>
 struct OpHandlers<IR::OP_F64COS> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    return cos(src);
  }
@@ -370,7 +356,7 @@ struct OpHandlers<IR::OP_F64COS> {

 template<>
 struct OpHandlers<IR::OP_F64SINCOS> {
-  FEXCORE_PRESERVE_ALL_ATTR static VectorScalarF64Pair handle(double src, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static VectorScalarF64Pair handle(uint16_t FCW, double src, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    double sin, cos;
 #ifdef _WIN32
@@ -385,7 +371,7 @@ struct OpHandlers<IR::OP_F64SINCOS> {

 template<>
 struct OpHandlers<IR::OP_F64TAN> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    return tan(src);
  }
@@ -393,7 +379,7 @@ struct OpHandlers<IR::OP_F64TAN> {

 template<>
 struct OpHandlers<IR::OP_F64F2XM1> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    return exp2(src) - 1.0;
  }
@@ -401,7 +387,7 @@ struct OpHandlers<IR::OP_F64F2XM1> {

 template<>
 struct OpHandlers<IR::OP_F64ATAN> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    return atan2(src1, src2);
  }
@@ -409,7 +395,7 @@ struct OpHandlers<IR::OP_F64ATAN> {

 template<>
 struct OpHandlers<IR::OP_F64FPREM> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    return fmod(src1, src2);
  }
@@ -417,7 +403,7 @@ struct OpHandlers<IR::OP_F64FPREM> {

 template<>
 struct OpHandlers<IR::OP_F64FPREM1> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    return remainder(src1, src2);
  }
@@ -425,7 +411,7 @@ struct OpHandlers<IR::OP_F64FPREM1> {

 template<>
 struct OpHandlers<IR::OP_F64FYL2X> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    return src2 * log2(src1);
  }
@@ -433,7 +419,7 @@ struct OpHandlers<IR::OP_F64FYL2X> {

 template<>
 struct OpHandlers<IR::OP_F64SCALE> {
-  FEXCORE_PRESERVE_ALL_ATTR static double handle(double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
+  FEXCORE_PRESERVE_ALL_ATTR static double handle(uint16_t FCW, double src1, double src2, FEXCore::Core::CpuStateFrame* Frame) {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    if (src1 == 0.0) { // src1 might be +/- zero
      return src1;     // this will return negative or positive zero if when appropriate
@@ -459,6 +445,7 @@ struct OpHandlers<IR::OP_F80BCDSTORE> {
    uint64_t Tmp = Src1.ToI64(&State.State);
    X80SoftFloat Rv;
    uint8_t* BCD = reinterpret_cast<uint8_t*>(&Rv);
+    memset(BCD, 0, 10);

    for (size_t i = 0; i < 9; ++i) {
      if (Tmp == 0) {
@@ -82,22 +82,24 @@ void InterpreterOps::FillFallbackIndexPointers(Core::FallbackABIInfo* Info, uint
                                  reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F80SCALE>::handle)};

  // Double Precision Unary
-  Info[Core::OPINDEX_F64SIN] = {ABIHandlers[FABI_F64_F64_PTR], reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64SIN>::handle)};
-  Info[Core::OPINDEX_F64COS] = {ABIHandlers[FABI_F64_F64_PTR], reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64COS>::handle)};
-  Info[Core::OPINDEX_F64SINCOS] = {ABIHandlers[FABI_F64x2_F64_PTR],
+  Info[Core::OPINDEX_F64SIN] = {ABIHandlers[FABI_F64_I16_F64_PTR], reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64SIN>::handle)};
+  Info[Core::OPINDEX_F64COS] = {ABIHandlers[FABI_F64_I16_F64_PTR], reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64COS>::handle)};
+  Info[Core::OPINDEX_F64SINCOS] = {ABIHandlers[FABI_F64x2_I16_F64_PTR],
                                   reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64SINCOS>::handle)};
-  Info[Core::OPINDEX_F64TAN] = {ABIHandlers[FABI_F64_F64_PTR], reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64TAN>::handle)};
-  Info[Core::OPINDEX_F64F2XM1] = {ABIHandlers[FABI_F64_F64_PTR], reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64F2XM1>::handle)};
+  Info[Core::OPINDEX_F64TAN] = {ABIHandlers[FABI_F64_I16_F64_PTR], reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64TAN>::handle)};
+  Info[Core::OPINDEX_F64F2XM1] = {ABIHandlers[FABI_F64_I16_F64_PTR],
+                                  reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64F2XM1>::handle)};

  // Double Precision Binary
-  Info[Core::OPINDEX_F64ATAN] = {ABIHandlers[FABI_F64_F64_F64_PTR], reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64ATAN>::handle)};
-  Info[Core::OPINDEX_F64FPREM] = {ABIHandlers[FABI_F64_F64_F64_PTR],
+  Info[Core::OPINDEX_F64ATAN] = {ABIHandlers[FABI_F64_I16_F64_F64_PTR],
+                                 reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64ATAN>::handle)};
+  Info[Core::OPINDEX_F64FPREM] = {ABIHandlers[FABI_F64_I16_F64_F64_PTR],
                                  reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64FPREM>::handle)};
-  Info[Core::OPINDEX_F64FPREM1] = {ABIHandlers[FABI_F64_F64_F64_PTR],
+  Info[Core::OPINDEX_F64FPREM1] = {ABIHandlers[FABI_F64_I16_F64_F64_PTR],
                                   reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64FPREM1>::handle)};
-  Info[Core::OPINDEX_F64FYL2X] = {ABIHandlers[FABI_F64_F64_F64_PTR],
+  Info[Core::OPINDEX_F64FYL2X] = {ABIHandlers[FABI_F64_I16_F64_F64_PTR],
                                  reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64FYL2X>::handle)};
-  Info[Core::OPINDEX_F64SCALE] = {ABIHandlers[FABI_F64_F64_F64_PTR],
+  Info[Core::OPINDEX_F64SCALE] = {ABIHandlers[FABI_F64_I16_F64_F64_PTR],
                                  reinterpret_cast<uint64_t>(&FEXCore::CPU::OpHandlers<IR::OP_F64SCALE>::handle)};

  // SSE4.2 string instructions
@@ -218,21 +220,21 @@ bool InterpreterOps::GetFallbackHandler(const IR::IROp_Header* IROp, FallbackInf
    return true;                                                                                       \
  }

-#define COMMON_UNARY_F64_OP(OP)                        \
-  case IR::OP_F64##OP: {                               \
-    *Info = {FABI_F64_F64_PTR, Core::OPINDEX_F64##OP}; \
-    return true;                                       \
+#define COMMON_UNARY_F64_OP(OP)                            \
+  case IR::OP_F64##OP: {                                   \
+    *Info = {FABI_F64_I16_F64_PTR, Core::OPINDEX_F64##OP}; \
+    return true;                                           \
  }
-#define COMMON_UNARYPAIR_F64_OP(OP)                      \
-  case IR::OP_F64##OP: {                                 \
-    *Info = {FABI_F64x2_F64_PTR, Core::OPINDEX_F64##OP}; \
-    return true;                                         \
+#define COMMON_UNARYPAIR_F64_OP(OP)                          \
+  case IR::OP_F64##OP: {                                     \
+    *Info = {FABI_F64x2_I16_F64_PTR, Core::OPINDEX_F64##OP}; \
+    return true;                                             \
  }

-#define COMMON_BINARY_F64_OP(OP)                           \
-  case IR::OP_F64##OP: {                                   \
-    *Info = {FABI_F64_F64_F64_PTR, Core::OPINDEX_F64##OP}; \
-    return true;                                           \
+#define COMMON_BINARY_F64_OP(OP)                               \
+  case IR::OP_F64##OP: {                                       \
+    *Info = {FABI_F64_I16_F64_F64_PTR, Core::OPINDEX_F64##OP}; \
+    return true;                                               \
  }

    // Unary
@@ -19,8 +19,8 @@ enum FallbackABI {
  FABI_F80_I16_I32_PTR,
  FABI_F32_I16_F80_PTR,
  FABI_F64_I16_F80_PTR,
-  FABI_F64_F64_PTR,
-  FABI_F64_F64_F64_PTR,
+  FABI_F64_I16_F64_PTR,
+  FABI_F64_I16_F64_F64_PTR,
  FABI_I16_I16_F80_PTR,
  FABI_I32_I16_F80_PTR,
  FABI_I64_I16_F80_PTR,
@@ -28,7 +28,7 @@ enum FallbackABI {
  FABI_F80_I16_F80_PTR,
  FABI_F80_I16_F80_F80_PTR,
  FABI_F80x2_I16_F80_PTR,
-  FABI_F64x2_F64_PTR,
+  FABI_F64x2_I16_F64_PTR,
  FABI_I32_I64_I64_V128_V128_I16,
  FABI_I32_V128_V128_I16,
  FABI_UNKNOWN,
@@ -372,7 +372,7 @@ DEF_OP(CondSubNZCV) {
 DEF_OP(Neg) {
  auto Op = IROp->C<IR::IROp_Neg>();

-  if (Op->Cond == IR::CondClass::AL) {
+  if (Op->Cond == FEXCore::IR::COND_AL) {
    neg(ConvertSize48(IROp), GetReg(Node), GetReg(Op->Src));
  } else {
    cneg(ConvertSize48(IROp), GetReg(Node), GetReg(Op->Src), MapCC(Op->Cond));
@@ -515,12 +515,6 @@ DEF_OP(AndWithFlags) {
  }
 }

-DEF_OP(AndShift) {
-  auto Op = IROp->C<IR::IROp_XorShift>();
-
-  and_(ConvertSize48(IROp), GetReg(Node), GetReg(Op->Src1), GetReg(Op->Src2), ConvertIRShiftType(Op->Shift), Op->ShiftAmount);
-}
-
 DEF_OP(XorShift) {
  auto Op = IROp->C<IR::IROp_XorShift>();

@@ -1046,19 +1040,24 @@ DEF_OP(Popcount) {

  if (CTX->HostFeatures.SupportsCSSC) {
    switch (OpSize) {
-    case IR::OpSize::i8Bit:
-      uxtb(ARMEmitter::Size::i32Bit, Dst, Src);
-      cnt(ARMEmitter::Size::i32Bit, Dst, Dst);
-      break;
-    case IR::OpSize::i16Bit:
-      uxth(ARMEmitter::Size::i32Bit, Dst, Src);
-      cnt(ARMEmitter::Size::i32Bit, Dst, Dst);
-      break;
-    case IR::OpSize::i32Bit: cnt(ARMEmitter::Size::i32Bit, Dst, Src); break;
-    case IR::OpSize::i64Bit: cnt(ARMEmitter::Size::i64Bit, Dst, Src); break;
-    default: LOGMAN_MSG_A_FMT("Unsupported Popcount size: {}", OpSize);
+      case IR::OpSize::i8Bit:
+        uxtb(ARMEmitter::Size::i32Bit, Dst, Src);
+        cnt(ARMEmitter::Size::i32Bit, Dst, Dst);
+        break;
+      case IR::OpSize::i16Bit:
+        uxth(ARMEmitter::Size::i32Bit, Dst, Src);
+        cnt(ARMEmitter::Size::i32Bit, Dst, Dst);
+        break;
+      case IR::OpSize::i32Bit:
+        cnt(ARMEmitter::Size::i32Bit, Dst, Src);
+        break;
+      case IR::OpSize::i64Bit:
+        cnt(ARMEmitter::Size::i64Bit, Dst, Src);
+        break;
+      default: LOGMAN_MSG_A_FMT("Unsupported Popcount size: {}", OpSize);
    }
-  } else {
+  }
+  else {
    switch (OpSize) {
    case IR::OpSize::i8Bit:
      fmov(ARMEmitter::Size::i32Bit, VTMP1.S(), Src);
@@ -1190,19 +1189,6 @@ DEF_OP(Rev) {
  }
 }

-DEF_OP(Rbit) {
-  auto Op = IROp->C<IR::IROp_Rbit>();
-  const auto OpSize = IROp->Size;
-
-  LOGMAN_THROW_A_FMT(OpSize == IR::OpSize::i32Bit || OpSize == IR::OpSize::i64Bit, "Unsupported {} size: {}", __func__, OpSize);
-  const auto EmitSize = ConvertSize48(IROp);
-
-  const auto Dst = GetReg(Node);
-  const auto Src = GetReg(Op->Src);
-
-  rbit(EmitSize, Dst, Src);
-}
-
 DEF_OP(Bfi) {
  auto Op = IROp->C<IR::IROp_Bfi>();
  const auto EmitSize = ConvertSize(IROp);
@@ -1286,16 +1272,6 @@ DEF_OP(Sbfe) {
  sbfx(ConvertSize(IROp), Dst, Src, Op->lsb, Op->Width);
 }

-DEF_OP(MaskGenerateFromBitWidth) {
-  auto Op = IROp->C<IR::IROp_MaskGenerateFromBitWidth>();
-  auto BitWidth = GetReg(Op->BitWidth);
-
-  LoadConstant(ARMEmitter::Size::i64Bit, TMP1, -1);
-  cmp(ARMEmitter::Size::i64Bit, BitWidth, 0);
-  lslv(ARMEmitter::Size::i64Bit, TMP2, TMP1, BitWidth);
-  csinv(ARMEmitter::Size::i64Bit, GetReg(Node), TMP1, TMP2, ARMEmitter::Condition::CC_EQ);
-}
-
 DEF_OP(Select) {
  auto Op = IROp->C<IR::IROp_Select>();
  const auto OpSize = IROp->Size;
@@ -1392,12 +1368,12 @@ DEF_OP(VExtractToGPR) {
  const auto Op = IROp->C<IR::IROp_VExtractToGPR>();
  const auto OpSize = IROp->Size;

-  constexpr auto AVXRegBitSize = Core::CPUState::XMM_AVX_REG_SIZE * 8;
+  [[maybe_unused]] constexpr auto AVXRegBitSize = Core::CPUState::XMM_AVX_REG_SIZE * 8;
  constexpr auto SSERegBitSize = Core::CPUState::XMM_SSE_REG_SIZE * 8;
  const auto ElementSizeBits = IR::OpSizeAsBits(Op->Header.ElementSize);

  const auto Offset = ElementSizeBits * Op->Index;
-  const auto Is256Bit = Offset >= SSERegBitSize;
+  [[maybe_unused]] const auto Is256Bit = Offset >= SSERegBitSize;
  LOGMAN_THROW_A_FMT(!Is256Bit || HostSupportsSVE256, "Need SVE256 support in order to use {} with 256-bit operation", __func__);

  const auto Dst = GetReg(Node);
@@ -33,7 +33,7 @@ void Arm64JITCore::InsertNamedThunkRelocation(ARMEmitter::Register Reg, const IR

  uint64_t Pointer = reinterpret_cast<uint64_t>(EmitterCTX->ThunkHandler->LookupThunk(Sum));

-  LoadConstant(ARMEmitter::Size::i64Bit, Reg, Pointer, false);
+  LoadConstant(ARMEmitter::Size::i64Bit, Reg, Pointer, EmitterCTX->Config.CacheObjectCodeCompilation());
  Relocations.emplace_back(MoveABI);
 }

@@ -77,36 +77,39 @@ void Arm64JITCore::InsertGuestRIPMove(ARMEmitter::Register Reg, uint64_t Constan
  MoveABI.GuestRIPMove.GuestRIP = Constant;
  MoveABI.GuestRIPMove.RegisterIndex = Reg.Idx();

-  LoadConstant(ARMEmitter::Size::i64Bit, Reg, Constant, false);
+  LoadConstant(ARMEmitter::Size::i64Bit, Reg, Constant, EmitterCTX->Config.CacheObjectCodeCompilation());
  Relocations.emplace_back(MoveABI);
 }

-bool Arm64JITCore::ApplyRelocations(uint64_t GuestEntry, std::span<std::byte> Code, std::span<const FEXCore::CPU::Relocation> Relocations) {
-  const auto OrigBase = GetBufferBase();
-  const auto OrigSize = GetBufferSize();
-  const auto OrigOffset = GetCursorOffset();
+bool Arm64JITCore::ApplyRelocations(uint64_t GuestEntry, uint64_t CodeEntry, uint64_t CursorEntry, size_t NumRelocations,
+                                    const char* EntryRelocations) {
+  size_t DataIndex {};
+  for (size_t j = 0; j < NumRelocations; ++j) {
+    const FEXCore::CPU::Relocation* Reloc = reinterpret_cast<const FEXCore::CPU::Relocation*>(&EntryRelocations[DataIndex]);
+    LOGMAN_THROW_A_FMT((DataIndex % alignof(Relocation)) == 0, "Alignment of relocation wasn't adhered to");

-  SetBuffer(reinterpret_cast<std::uint8_t*>(Code.data()), Code.size_bytes());
-  for (auto& Reloc : Relocations) {
-    switch (Reloc.Header.Type) {
+    switch (Reloc->Header.Type) {
    case FEXCore::CPU::RelocationTypes::RELOC_NAMED_SYMBOL_LITERAL: {
-      uint64_t Pointer = GetNamedSymbolLiteral(Reloc.NamedSymbolLiteral.Symbol);
+      uint64_t Pointer = GetNamedSymbolLiteral(Reloc->NamedSymbolLiteral.Symbol);
      // Relocation occurs at the cursorEntry + offset relative to that cursor
-      SetCursorOffset(Reloc.NamedSymbolLiteral.Offset);
+      SetCursorOffset(CursorEntry + Reloc->NamedSymbolLiteral.Offset);

      // Generate a literal so we can place it
      dc64(Pointer);
+
+      DataIndex += sizeof(Reloc->NamedSymbolLiteral);
      break;
    }
    case FEXCore::CPU::RelocationTypes::RELOC_NAMED_THUNK_MOVE: {
-      uint64_t Pointer = reinterpret_cast<uint64_t>(EmitterCTX->ThunkHandler->LookupThunk(Reloc.NamedThunkMove.Symbol));
+      uint64_t Pointer = reinterpret_cast<uint64_t>(EmitterCTX->ThunkHandler->LookupThunk(Reloc->NamedThunkMove.Symbol));
      if (Pointer == ~0ULL) {
        return false;
      }

      // Relocation occurs at the cursorEntry + offset relative to that cursor.
-      SetCursorOffset(Reloc.NamedThunkMove.Offset);
-      LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Register(Reloc.NamedThunkMove.RegisterIndex), Pointer, true);
+      SetCursorOffset(CursorEntry + Reloc->NamedThunkMove.Offset);
+      LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Register(Reloc->NamedThunkMove.RegisterIndex), Pointer, true);
+      DataIndex += sizeof(Reloc->NamedThunkMove);
      break;
    }
    case FEXCore::CPU::RelocationTypes::RELOC_GUEST_RIP_MOVE: {
@@ -114,27 +117,18 @@ bool Arm64JITCore::ApplyRelocations(uint64_t GuestEntry, std::span<std::byte> Co
      // XXX: Should spin the relocation list, create a list of guest RIP moves, and ask for them all once, reduces lock contention.
      uint64_t Pointer = ~0ULL; // EmitterCTX->JITObjectCache->FindRelocatedRIP(Reloc->GuestRIPMove.GuestRIP);
      if (Pointer == ~0ULL) {
-        SetBuffer(OrigBase, OrigSize);
-        SetCursorOffset(OrigOffset);
        return false;
      }

      // Relocation occurs at the cursorEntry + offset relative to that cursor.
-      SetCursorOffset(Reloc.GuestRIPMove.Offset);
-      LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Register(Reloc.GuestRIPMove.RegisterIndex), Pointer, true);
+      SetCursorOffset(CursorEntry + Reloc->GuestRIPMove.Offset);
+      LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Register(Reloc->GuestRIPMove.RegisterIndex), Pointer, true);
+      DataIndex += sizeof(Reloc->GuestRIPMove);
      break;
    }
    }
  }

-  SetBuffer(OrigBase, OrigSize);
-  SetCursorOffset(OrigOffset);
-
  return true;
 }
-
-fextl::vector<FEXCore::CPU::Relocation> Arm64JITCore::TakeRelocations() {
-  return std::move(Relocations);
-}
-
 } // namespace FEXCore::CPU
@@ -322,26 +322,13 @@ DEF_OP(AtomicFetchNeg) {

  auto MemSrc = GetReg(Op->Addr);

-  if (CTX->HostFeatures.SupportsAtomics) {
-    // Use a CAS loop to avoid needing to emulate unaligned LLSC atomics
-    ldr(SubEmitSize, TMP2, MemSrc);
-    ARMEmitter::BackwardLabel LoopTop;
-    Bind(&LoopTop);
-    mov(EmitSize, TMP4, TMP2);
-    neg(EmitSize, TMP3, TMP2);
-    casal(SubEmitSize, TMP2, TMP3, MemSrc);
-    sub(EmitSize, TMP3, TMP2, TMP4);
-    cbnz(EmitSize, TMP3, &LoopTop);
-    mov(EmitSize, GetReg(Node), TMP2.R());
-  } else {
-    ARMEmitter::BackwardLabel LoopTop;
-    Bind(&LoopTop);
-    ldaxr(SubEmitSize, TMP2, MemSrc);
-    neg(EmitSize, TMP3, TMP2);
-    stlxr(SubEmitSize, TMP4, TMP3, MemSrc);
-    cbnz(EmitSize, TMP4, &LoopTop);
-    mov(EmitSize, GetReg(Node), TMP2.R());
-  }
+  ARMEmitter::BackwardLabel LoopTop;
+  Bind(&LoopTop);
+  ldaxr(SubEmitSize, TMP2, MemSrc);
+  neg(EmitSize, TMP3, TMP2);
+  stlxr(SubEmitSize, TMP4, TMP3, MemSrc);
+  cbnz(EmitSize, TMP4, &LoopTop);
+  mov(EmitSize, GetReg(Node), TMP2.R());
 }

 DEF_OP(TelemetrySetValue) {
@@ -146,15 +146,6 @@ DEF_OP(ExitFunction) {
        } else {
          stp<ARMEmitter::IndexType::PRE>(ARMEmitter::XReg::zr, ARMEmitter::XReg::zr, REG_CALLRET_SP, -0x10);
        }
-      } else if (Op->Hint == IR::BranchHint::CheckTF) {
-        ARMEmitter::ForwardLabel TFUnset;
-        ldrb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
-        cbz(ARMEmitter::Size::i32Bit, TMP1, &TFUnset);
-        LoadConstant(ARMEmitter::Size::i64Bit, TMP1, NewRIP);
-        str(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, State.rip));
-        ldr(TMP2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.DispatcherLoopTop));
-        blr(TMP2);
-        Bind(&TFUnset);
      }

      EmitLinkedBranch(NewRIP, Op->Hint == IR::BranchHint::Call);
@@ -214,20 +205,21 @@ DEF_OP(ExitFunction) {

 DEF_OP(Jump) {
  const auto Op = IROp->C<IR::IROp_Jump>();
+  const auto Target = Op->TargetBlock;

-  PendingTargetLabel = JumpTarget(Op->TargetBlock);
+  PendingTargetLabel = &JumpTargets.try_emplace(Target.ID()).first->second;
 }

 DEF_OP(CondJump) {
  auto Op = IROp->C<IR::IROp_CondJump>();

-  auto TrueTargetLabel = JumpTarget(Op->TrueBlock);
+  auto TrueTargetLabel = &JumpTargets.try_emplace(Op->TrueBlock.ID()).first->second;

  if (Op->FromNZCV) {
    b(MapCC(Op->Cond), TrueTargetLabel);
  } else {
-    uint64_t Const;
-    const bool isConst = IsInlineConstant(Op->Cmp2, &Const);
+    [[maybe_unused]] uint64_t Const;
+    [[maybe_unused]] const bool isConst = IsInlineConstant(Op->Cmp2, &Const);

    auto Reg = GetReg(Op->Cmp1);
    const auto Size = Op->CompareSize == IR::OpSize::i32Bit ? ARMEmitter::Size::i32Bit : ARMEmitter::Size::i64Bit;
@@ -235,16 +227,16 @@ DEF_OP(CondJump) {
    LOGMAN_THROW_A_FMT(IsGPR(Op->Cmp1), "CondJump: Expected GPR");
    LOGMAN_THROW_A_FMT(isConst, "CondJump: Expected constant source");

-    if (Op->Cond == IR::CondClass::EQ) {
+    if (Op->Cond.Val == FEXCore::IR::COND_EQ) {
      LOGMAN_THROW_A_FMT(Const == 0, "CondJump: Expected 0 source");
      cbz(Size, Reg, TrueTargetLabel);
-    } else if (Op->Cond == IR::CondClass::NEQ) {
+    } else if (Op->Cond.Val == FEXCore::IR::COND_NEQ) {
      LOGMAN_THROW_A_FMT(Const == 0, "CondJump: Expected 0 source");
      cbnz(Size, Reg, TrueTargetLabel);
-    } else if (Op->Cond == IR::CondClass::TSTZ) {
+    } else if (Op->Cond.Val == FEXCore::IR::COND_TSTZ) {
      LOGMAN_THROW_A_FMT(Const < 64, "CondJump: Expected valid bit source");
      tbz(Reg, Const, TrueTargetLabel);
-    } else if (Op->Cond == IR::CondClass::TSTNZ) {
+    } else if (Op->Cond.Val == FEXCore::IR::COND_TSTNZ) {
      LOGMAN_THROW_A_FMT(Const < 64, "CondJump: Expected valid bit source");
      tbnz(Reg, Const, TrueTargetLabel);
    } else {
@@ -252,7 +244,7 @@ DEF_OP(CondJump) {
    }
  }

-  PendingTargetLabel = JumpTarget(Op->FalseBlock);
+  PendingTargetLabel = &JumpTargets.try_emplace(Op->FalseBlock.ID()).first->second;
 }

 DEF_OP(Syscall) {
@@ -446,50 +438,48 @@ DEF_OP(Thunk) {

 DEF_OP(ValidateCode) {
  auto Op = IROp->C<IR::IROp_ValidateCode>();
-  auto OldCode = Op->CodeOriginal.data();
-  auto Base = GetReg(Op->Header.Args[0]).X();
+  const auto* OldCode = (const uint8_t*)&Op->CodeOriginalLow;
  int len = Op->CodeLength;
-  int Offset = 0;
-  ARMEmitter::ForwardLabel Fail;
+  int idx = 0;
+
+  LoadConstant(ARMEmitter::Size::i64Bit, GetReg(Node), 0);
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP1, Entry + Op->Offset);
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP2, 1);

  const auto Dst = GetReg(Node);

-  auto EmitCheck = [&](size_t Size, auto&& LoadData) {
-    while (len >= Size) {
-      LoadData();
-      sub(ARMEmitter::Size::i64Bit, TMP1, TMP1, TMP2);
-      cbnz(ARMEmitter::Size::i64Bit, TMP1, &Fail);
-      len -= Size;
-      Offset += Size;
-    }
-  };
-
-  EmitCheck(8, [&]() {
-    ldr(TMP1, Base, Offset);
-    LoadConstant(ARMEmitter::Size::i64Bit, TMP2, *(const uint64_t*)(OldCode + Offset));
-  });
-
-  EmitCheck(4, [&]() {
-    ldr(TMP1.W(), Base, Offset);
-    LoadConstant(ARMEmitter::Size::i32Bit, TMP2, *(const uint32_t*)(OldCode + Offset));
-  });
-
-  EmitCheck(2, [&]() {
-    ldrh(TMP1.W(), Base, Offset);
-    LoadConstant(ARMEmitter::Size::i32Bit, TMP2, *(const uint16_t*)(OldCode + Offset));
-  });
-
-  EmitCheck(1, [&]() {
-    ldrb(TMP1.W(), Base, Offset);
-    LoadConstant(ARMEmitter::Size::i32Bit, TMP2, *(const uint8_t*)(OldCode + Offset));
-  });
-
-  ARMEmitter::ForwardLabel End;
-  LoadConstant(ARMEmitter::Size::i32Bit, Dst, 0);
-  b(&End);
-  Bind(&Fail);
-  LoadConstant(ARMEmitter::Size::i32Bit, Dst, 1);
-  Bind(&End);
+  while (len >= 8) {
+    ldr(ARMEmitter::XReg::x2, TMP1, idx);
+    LoadConstant(ARMEmitter::Size::i64Bit, TMP4, *(const uint64_t*)(OldCode + idx));
+    cmp(ARMEmitter::Size::i64Bit, TMP3, TMP4);
+    csel(ARMEmitter::Size::i64Bit, Dst, Dst, TMP2, ARMEmitter::Condition::CC_EQ);
+    len -= 8;
+    idx += 8;
+  }
+  while (len >= 4) {
+    ldr(ARMEmitter::WReg::w2, TMP1, idx);
+    LoadConstant(ARMEmitter::Size::i64Bit, TMP4, *(const uint32_t*)(OldCode + idx));
+    cmp(ARMEmitter::Size::i32Bit, TMP3, TMP4);
+    csel(ARMEmitter::Size::i64Bit, Dst, Dst, TMP2, ARMEmitter::Condition::CC_EQ);
+    len -= 4;
+    idx += 4;
+  }
+  while (len >= 2) {
+    ldrh(TMP3, TMP1, idx);
+    LoadConstant(ARMEmitter::Size::i64Bit, TMP4, *(const uint16_t*)(OldCode + idx));
+    cmp(ARMEmitter::Size::i32Bit, TMP3, TMP4);
+    csel(ARMEmitter::Size::i64Bit, Dst, Dst, TMP2, ARMEmitter::Condition::CC_EQ);
+    len -= 2;
+    idx += 2;
+  }
+  while (len >= 1) {
+    ldrb(TMP3, TMP1, idx);
+    LoadConstant(ARMEmitter::Size::i64Bit, TMP4, *(const uint8_t*)(OldCode + idx));
+    cmp(ARMEmitter::Size::i32Bit, TMP3, TMP4);
+    csel(ARMEmitter::Size::i64Bit, Dst, Dst, TMP2, ARMEmitter::Condition::CC_EQ);
+    len -= 1;
+    idx += 1;
+  }
 }

 DEF_OP(ThreadRemoveCodeEntry) {
@@ -423,11 +423,11 @@ DEF_OP(Vector_FToI) {
    const auto Mask = PRED_TMP_32B.Merging();

    switch (Op->Round) {
-    case IR::RoundMode::Nearest: frintn(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
-    case IR::RoundMode::NegInfinity: frintm(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
-    case IR::RoundMode::PosInfinity: frintp(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
-    case IR::RoundMode::TowardsZero: frintz(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
-    case IR::RoundMode::Host: frinti(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
+    case FEXCore::IR::Round_Nearest.Val: frintn(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
+    case FEXCore::IR::Round_Negative_Infinity.Val: frintm(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
+    case FEXCore::IR::Round_Positive_Infinity.Val: frintp(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
+    case FEXCore::IR::Round_Towards_Zero.Val: frintz(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
+    case FEXCore::IR::Round_Host.Val: frinti(SubEmitSize, Dst.Z(), Mask, Vector.Z()); break;
    }
  } else {
    const auto IsScalar = ElementSize == OpSize;
@@ -449,21 +449,21 @@ DEF_OP(Vector_FToI) {
  }

      switch (Op->Round) {
-      case IR::RoundMode::Nearest: ROUNDING_FN(frintn); break;
-      case IR::RoundMode::NegInfinity: ROUNDING_FN(frintm); break;
-      case IR::RoundMode::PosInfinity: ROUNDING_FN(frintp); break;
-      case IR::RoundMode::TowardsZero: ROUNDING_FN(frintz); break;
-      case IR::RoundMode::Host: ROUNDING_FN(frinti); break;
+      case IR::Round_Nearest.Val: ROUNDING_FN(frintn); break;
+      case IR::Round_Negative_Infinity.Val: ROUNDING_FN(frintm); break;
+      case IR::Round_Positive_Infinity.Val: ROUNDING_FN(frintp); break;
+      case IR::Round_Towards_Zero.Val: ROUNDING_FN(frintz); break;
+      case IR::Round_Host.Val: ROUNDING_FN(frinti); break;
      }

 #undef ROUNDING_FN
    } else {
      switch (Op->Round) {
-      case IR::RoundMode::Nearest: frintn(SubEmitSize, Dst.Q(), Vector.Q()); break;
-      case IR::RoundMode::NegInfinity: frintm(SubEmitSize, Dst.Q(), Vector.Q()); break;
-      case IR::RoundMode::PosInfinity: frintp(SubEmitSize, Dst.Q(), Vector.Q()); break;
-      case IR::RoundMode::TowardsZero: frintz(SubEmitSize, Dst.Q(), Vector.Q()); break;
-      case IR::RoundMode::Host: frinti(SubEmitSize, Dst.Q(), Vector.Q()); break;
+      case FEXCore::IR::Round_Nearest.Val: frintn(SubEmitSize, Dst.Q(), Vector.Q()); break;
+      case FEXCore::IR::Round_Negative_Infinity.Val: frintm(SubEmitSize, Dst.Q(), Vector.Q()); break;
+      case FEXCore::IR::Round_Positive_Infinity.Val: frintp(SubEmitSize, Dst.Q(), Vector.Q()); break;
+      case FEXCore::IR::Round_Towards_Zero.Val: frintz(SubEmitSize, Dst.Q(), Vector.Q()); break;
+      case FEXCore::IR::Round_Host.Val: frinti(SubEmitSize, Dst.Q(), Vector.Q()); break;
      }
    }
  }
@@ -539,11 +539,11 @@ DEF_OP(Vector_F64ToI32) {
    // Then convert to integers using fcvtzs.
    auto CVTReg = Dst.Z();
    switch (Round) {
-    case IR::RoundMode::Nearest: frintn(ARMEmitter::SubRegSize::i64Bit, Dst.Z(), Mask, Vector.Z()); break;
-    case IR::RoundMode::NegInfinity: frintm(ARMEmitter::SubRegSize::i64Bit, Dst.Z(), Mask, Vector.Z()); break;
-    case IR::RoundMode::PosInfinity: frintp(ARMEmitter::SubRegSize::i64Bit, Dst.Z(), Mask, Vector.Z()); break;
-    case IR::RoundMode::TowardsZero: CVTReg = Vector.Z(); break;
-    case IR::RoundMode::Host: frinti(ARMEmitter::SubRegSize::i64Bit, Dst.Z(), Mask, Vector.Z()); break;
+    case IR::Round_Nearest.Val: frintn(ARMEmitter::SubRegSize::i64Bit, Dst.Z(), Mask, Vector.Z()); break;
+    case IR::Round_Negative_Infinity.Val: frintm(ARMEmitter::SubRegSize::i64Bit, Dst.Z(), Mask, Vector.Z()); break;
+    case IR::Round_Positive_Infinity.Val: frintp(ARMEmitter::SubRegSize::i64Bit, Dst.Z(), Mask, Vector.Z()); break;
+    case IR::Round_Towards_Zero.Val: CVTReg = Vector.Z(); break;
+    case IR::Round_Host.Val: frinti(ARMEmitter::SubRegSize::i64Bit, Dst.Z(), Mask, Vector.Z()); break;
    }

    fcvtzs(Dst.Z(), ARMEmitter::SubRegSize::i32Bit, Mask, CVTReg, ARMEmitter::SubRegSize::i64Bit);
@@ -567,11 +567,11 @@ DEF_OP(Vector_F64ToI32) {

    ///< Round float to integral depending on rounding mode.
    switch (Round) {
-    case IR::RoundMode::Nearest: frintn(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
-    case IR::RoundMode::NegInfinity: frintm(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
-    case IR::RoundMode::PosInfinity: frintp(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
-    case IR::RoundMode::TowardsZero: frintz(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
-    case IR::RoundMode::Host: frinti(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
+    case FEXCore::IR::Round_Nearest.Val: frintn(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
+    case FEXCore::IR::Round_Negative_Infinity.Val: frintm(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
+    case FEXCore::IR::Round_Positive_Infinity.Val: frintp(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
+    case FEXCore::IR::Round_Towards_Zero.Val: frintz(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
+    case FEXCore::IR::Round_Host.Val: frinti(ARMEmitter::SubRegSize::i64Bit, Dst.Q(), Vector.Q()); break;
    }

    // Now narrow from f64 to f32.
@@ -1,35 +0,0 @@
-// SPDX-License-Identifier: MIT
-#pragma once
-
-#include <FEXCore/Utils/AllocatorHooks.h>
-#include <FEXCore/fextl/vector.h>
-
-#include <cstdint>
-
-namespace FEXCore::CPU {
-union Relocation;
-} // namespace FEXCore::CPU
-
-namespace FEXCore::Core {
-struct DebugDataSubblock {
-  uint32_t HostCodeOffset;
-  uint32_t HostCodeSize;
-};
-
-struct DebugDataGuestOpcode {
-  uint64_t GuestEntryOffset;
-  ptrdiff_t HostEntryOffset;
-};
-
-/**
- * @brief Contains debug data for a block of code for later debugger analysis
- *
- * Needs to remain around for as long as the code could be executed at least
- */
-struct DebugData : public FEXCore::Allocator::FEXAllocOperators {
-  uint64_t HostCodeSize; ///< The size of the code generated in the host JIT
-  fextl::vector<DebugDataSubblock> Subblocks;
-  fextl::vector<DebugDataGuestOpcode> GuestOpcodes;
-  fextl::vector<FEXCore::CPU::Relocation>* Relocations;
-};
-} // namespace FEXCore::Core
@@ -16,7 +16,7 @@ DEF_OP(VAESImc) {

 DEF_OP(VAESEnc) {
  const auto Op = IROp->C<IR::IROp_VAESEnc>();
-  const auto OpSize = IROp->Size;
+  [[maybe_unused]] const auto OpSize = IROp->Size;

  const auto Dst = GetVReg(Node);
  const auto Key = GetVReg(Op->Key);
@@ -41,7 +41,7 @@ DEF_OP(VAESEnc) {

 DEF_OP(VAESEncLast) {
  const auto Op = IROp->C<IR::IROp_VAESEncLast>();
-  const auto OpSize = IROp->Size;
+  [[maybe_unused]] const auto OpSize = IROp->Size;

  const auto Dst = GetVReg(Node);
  const auto Key = GetVReg(Op->Key);
@@ -64,7 +64,7 @@ DEF_OP(VAESEncLast) {

 DEF_OP(VAESDec) {
  const auto Op = IROp->C<IR::IROp_VAESDec>();
-  const auto OpSize = IROp->Size;
+  [[maybe_unused]] const auto OpSize = IROp->Size;

  const auto Dst = GetVReg(Node);
  const auto Key = GetVReg(Op->Key);
@@ -89,7 +89,7 @@ DEF_OP(VAESDec) {

 DEF_OP(VAESDecLast) {
  const auto Op = IROp->C<IR::IROp_VAESDecLast>();
-  const auto OpSize = IROp->Size;
+  [[maybe_unused]] const auto OpSize = IROp->Size;

  const auto Dst = GetVReg(Node);
  const auto Key = GetVReg(Op->Key);
@@ -322,7 +322,7 @@ DEF_OP(VSha256U1) {

 DEF_OP(PCLMUL) {
  const auto Op = IROp->C<IR::IROp_PCLMUL>();
-  const auto OpSize = IROp->Size;
+  [[maybe_unused]] const auto OpSize = IROp->Size;

  const auto Dst = GetVReg(Node);
  const auto Src1 = GetVReg(Op->Src1);
@@ -12,13 +12,14 @@ $end_info$
 */

 #include "Common/SoftFloat.h"
-
+#include "FEXCore/Utils/Telemetry.h"
+#include "FEXCore/Utils/TypeDefines.h"
 #include "Interface/Context/Context.h"
 #include "Interface/Core/LookupCache.h"
+
 #include "Interface/Core/Dispatcher/Dispatcher.h"
-#include "Interface/Core/Interpreter/InterpreterOps.h"
-#include "Interface/Core/JIT/DebugData.h"
 #include "Interface/Core/JIT/JITClass.h"
+
 #include "Interface/IR/Passes/RegisterAllocationPass.h"

 #include "Utils/MemberFunctionToPointer.h"
@@ -29,16 +30,15 @@ $end_info$
 #include <FEXCore/Utils/Allocator.h>
 #include <FEXCore/Utils/CompilerDefs.h>
 #include <FEXCore/Utils/EnumUtils.h>
-#include <FEXCore/Utils/LogManager.h>
 #include <FEXCore/Utils/Profiler.h>
-#include <FEXCore/Utils/Telemetry.h>
-#include <FEXCore/Utils/TypeDefines.h>
 #include <FEXCore/HLE/SyscallHandler.h>

-#include <cstdio>
-#include <cstring>
-#include <limits>
+#include "Interface/Core/Interpreter/InterpreterOps.h"
+
+#include <stdio.h>
 #include <unistd.h>
+#include <string.h>
+#include <limits>

 namespace {
 struct DivRem {
@@ -222,7 +222,7 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      FillF64Result();
    } break;

-    case FABI_F64_F64_PTR: {
+    case FABI_F64_I16_F64_PTR: {
      // Linux Reg/Win32 Reg:
      // tmp4 (x4/x13): FallbackHandler
      // x30: return
@@ -239,7 +239,7 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
      FillF64Result();
    } break;
-    case FABI_F64x2_F64_PTR: {
+    case FABI_F64x2_I16_F64_PTR: {
      // Linux Reg/Win32 Reg:
      // tmp4 (x4/x13): FallbackHandler
      // x30: return
@@ -264,7 +264,7 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      FillF64x2Result(DstLo, DstHi);
    } break;

-    case FABI_F64_F64_F64_PTR: {
+    case FABI_F64_I16_F64_F64_PTR: {
      // Linux Reg/Win32 Reg:
      // tmp4 (x4/x13): FallbackHandler
      // x30: return
@@ -538,8 +538,7 @@ uint64_t Arm64JITCore::ExitFunctionLink(FEXCore::Core::CpuStateFrame* Frame, FEX
  } else {
    {
      // Guard the LookupCache lock with the code invalidation mutex, to avoid issues with forking
-      auto lk_inval =
-        GuardSignalDeferringSection<std::shared_lock>(static_cast<Context::ContextImpl*>(Thread->CTX)->CodeInvalidationMutex, Thread);
+      auto lk_inval = GuardSignalDeferringSection<std::shared_lock>(static_cast<Context::ContextImpl*>(Thread->CTX)->CodeInvalidationMutex, Thread);
      HostCode = Thread->LookupCache->FindBlock(GuestRip);
    }
    if (!HostCode) {
@@ -625,10 +624,10 @@ Arm64JITCore::Arm64JITCore(FEXCore::Context::ContextImpl* ctx, FEXCore::Core::In

  RAPass = Thread->PassManager->GetPass<IR::RegisterAllocationPass>("RA");

-  RAPass->AddRegisters(IR::RegClass::GPR, GeneralRegisters.size());
-  RAPass->AddRegisters(IR::RegClass::GPRFixed, StaticRegisters.size());
-  RAPass->AddRegisters(IR::RegClass::FPR, GeneralFPRegisters.size());
-  RAPass->AddRegisters(IR::RegClass::FPRFixed, StaticFPRegisters.size());
+  RAPass->AddRegisters(FEXCore::IR::GPRClass, GeneralRegisters.size());
+  RAPass->AddRegisters(FEXCore::IR::GPRFixedClass, StaticRegisters.size());
+  RAPass->AddRegisters(FEXCore::IR::FPRClass, GeneralFPRegisters.size());
+  RAPass->AddRegisters(FEXCore::IR::FPRFixedClass, StaticFPRegisters.size());
  RAPass->PairRegs = PairRegisters;

  {
@@ -640,7 +639,6 @@ Arm64JITCore::Arm64JITCore(FEXCore::Context::ContextImpl* ctx, FEXCore::Core::In
    Common.PrintValue = reinterpret_cast<uint64_t>(PrintValue);
    Common.PrintVectorValue = reinterpret_cast<uint64_t>(PrintVectorValue);
    Common.ThreadRemoveCodeEntryFromJIT = reinterpret_cast<uintptr_t>(&Context::ContextImpl::ThreadRemoveCodeEntryFromJit);
-    Common.MonoBackpatcherWrite = reinterpret_cast<uint64_t>(&Context::ContextImpl::MonoBackpatcherWrite);
    Common.CPUIDObj = reinterpret_cast<uint64_t>(&CTX->CPUID);

    {
@@ -741,48 +739,48 @@ bool Arm64JITCore::IsInlineEntrypointOffset(const IR::OrderedNodeWrapper& WNode,
  }
 }

-void Arm64JITCore::EmitTFCheck() {
-  ARMEmitter::ForwardLabel l_TFUnset;
-  ARMEmitter::ForwardLabel l_TFBlocked;
+void Arm64JITCore::EmitInterruptChecks(bool CheckTF) {
+  if (CheckTF) {
+    ARMEmitter::ForwardLabel l_TFUnset;
+    ARMEmitter::ForwardLabel l_TFBlocked;

-  // Note that this needs to be before the below suspend checks, as X86 checks this flag immediately after executing an instruction.
-  ldrb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
+    // Note that this needs to be before the below suspend checks, as X86 checks this flag immediately after executing an instruction.
+    ldrb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));

-  cbz(ARMEmitter::Size::i32Bit, TMP1, &l_TFUnset);
+    cbz(ARMEmitter::Size::i32Bit, TMP1, &l_TFUnset);

-  // X86 semantically checks TF after executing each instruction, so e.g. setting a context with TF set will execute a single instruction
-  // and then raise an exception. However on the FEX side this is simpler to implement by checking at the start of each instruction, handle this by having bit 1 being unset in the flag state indicate that TF is blocked for a single instruction.
-  tbz(TMP1, 1, &l_TFBlocked);
+    // X86 semantically checks TF after executing each instruction, so e.g. setting a context with TF set will execute a single instruction
+    // and then raise an exception. However on the FEX side this is simpler to implement by checking at the start of each instruction, handle this by having bit 1 being unset in the flag state indicate that TF is blocked for a single instruction.
+    tbz(TMP1, 1, &l_TFBlocked);

-  // Block TF for a single instruction when the frontend jumps to a new context by unsetting bit 1.
-  ldrb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
-  and_(ARMEmitter::Size::i32Bit, TMP1, TMP1, ~(1 << 1));
-  strb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
+    // Block TF for a single instruction when the frontend jumps to a new context by unsetting bit 1.
+    ldrb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
+    and_(ARMEmitter::Size::i32Bit, TMP1, TMP1, ~(1 << 1));
+    strb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));

-  Core::CpuStateFrame::SynchronousFaultDataStruct State = {
-    .FaultToTopAndGeneratedException = 1,
-    .Signal = Core::FAULT_SIGTRAP,
-    .TrapNo = X86State::X86_TRAPNO_DB,
-    .si_code = 2,
-    .err_code = 0,
-  };
+    Core::CpuStateFrame::SynchronousFaultDataStruct State = {
+      .FaultToTopAndGeneratedException = 1,
+      .Signal = Core::FAULT_SIGTRAP,
+      .TrapNo = X86State::X86_TRAPNO_DB,
+      .si_code = 2,
+      .err_code = 0,
+    };

-  uint64_t Constant {};
-  memcpy(&Constant, &State, sizeof(State));
+    uint64_t Constant {};
+    memcpy(&Constant, &State, sizeof(State));

-  LoadConstant(ARMEmitter::Size::i64Bit, TMP1, Constant);
-  str(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, SynchronousFaultData));
-  ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.GuestSignal_SIGTRAP));
-  br(TMP1);
+    LoadConstant(ARMEmitter::Size::i64Bit, TMP1, Constant);
+    str(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, SynchronousFaultData));
+    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.GuestSignal_SIGTRAP));
+    br(TMP1);

-  Bind(&l_TFBlocked);
-  // If TF was blocked for this instruction, unblock it for the next.
-  LoadConstant(ARMEmitter::Size::i32Bit, TMP1, 0b11);
-  strb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
-  Bind(&l_TFUnset);
-}
+    Bind(&l_TFBlocked);
+    // If TF was blocked for this instruction, unblock it for the next.
+    LoadConstant(ARMEmitter::Size::i32Bit, TMP1, 0b11);
+    strb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
+    Bind(&l_TFUnset);
+  }

-void Arm64JITCore::EmitSuspendInterruptCheck() {
  if (CTX->Config.NeedsPendingInterruptFaultCheck) {
    // Trigger a fault if there are any pending interrupts
    // Used only for suspend on WIN32 at the moment
@@ -807,9 +805,7 @@ void Arm64JITCore::EmitEntryPoint(ARMEmitter::BackwardLabel& HeaderLabel, bool C
  adr(TMP1, &HeaderLabel);
  str(TMP1, STATE, offsetof(FEXCore::Core::CPUState, InlineJITBlockHeader));

-  if (CheckTF) {
-    EmitTFCheck();
-  }
+  EmitInterruptChecks(CheckTF);

  if (SpillSlots) {
    const auto TotalSpillSlotsSize = SpillSlots * MaxSpillSlotSize;
@@ -831,7 +827,6 @@ CPUBackend::CompiledCode Arm64JITCore::CompileCode(uint64_t Entry, uint64_t Size
  CallReturnTargets.clear();
  PendingJumpThunks.clear();
  uint32_t SSACount = IR->GetSSACount();
-  JumpTargets.resize(IR->GetHeader()->BlockCount, {});

  this->Entry = Entry;
  this->DebugData = DebugData;
@@ -891,13 +886,10 @@ CPUBackend::CompiledCode Arm64JITCore::CompileCode(uint64_t Entry, uint64_t Size
    auto BlockStartHostCode = GetCursorAddress<uint8_t*>();
    {
      const auto Node = IR->GetID(BlockNode);
-      const auto Target = &JumpTargets[BlockIROp->ID];
+      const auto IsTarget = JumpTargets.try_emplace(Node).first;

      // if there's a pending branch, and it is not fall-through
-      if (PendingTargetLabel && PendingTargetLabel != Target) {
-        if (PendingTargetLabel->Backward.Location) {
-          EmitSuspendInterruptCheck();
-        }
+      if (PendingTargetLabel && PendingTargetLabel != &IsTarget->second) {
        b(PendingTargetLabel);
        PendingTargetLabel = nullptr;
      }
@@ -908,7 +900,7 @@ CPUBackend::CompiledCode Arm64JITCore::CompileCode(uint64_t Entry, uint64_t Size
        const auto IsReturnTarget = CallReturnTargets.try_emplace(Node).first;
        if (PendingTargetLabel) {
          // If there is a fallthrough branch to this block, skip over the entrypoint code.
-          b(Target);
+          b(&IsTarget->second);
        } else if (PendingCallReturnTargetLabel && PendingCallReturnTargetLabel != &IsReturnTarget->second) {
          // If we just emitted a call, but the block we're now emitting is not the return block so don't fallthrough.
          b(PendingCallReturnTargetLabel);
@@ -929,7 +921,7 @@ CPUBackend::CompiledCode Arm64JITCore::CompileCode(uint64_t Entry, uint64_t Size
      }
      PendingTargetLabel = nullptr;

-      Bind(Target);
+      Bind(&IsTarget->second);
    }

    for (auto [CodeNode, IROp] : IR->GetCode(BlockNode)) {
@@ -953,9 +945,6 @@ CPUBackend::CompiledCode Arm64JITCore::CompileCode(uint64_t Entry, uint64_t Size

  // Make sure last branch is generated. It certainly can't be eliminated here.
  if (PendingTargetLabel) {
-    if (PendingTargetLabel->Backward.Location) {
-      EmitSuspendInterruptCheck();
-    }
    b(PendingTargetLabel);
  }
  PendingTargetLabel = nullptr;
@@ -10,17 +10,13 @@ $end_info$
 #include "Interface/Core/ArchHelpers/Arm64Emitter.h"
 #include "Interface/Core/CPUBackend.h"
 #include "Interface/Core/Dispatcher/Dispatcher.h"
-#include "Interface/Core/JIT/Relocations.h"
 #include "Interface/IR/IR.h"
 #include "Interface/IR/IntrusiveIRList.h"
 #include "Interface/IR/RegisterAllocationData.h"

-#include <FEXCore/Config/Config.h>
 #include <FEXCore/Core/CoreState.h>
 #include <FEXCore/IR/IR.h>
-#include <FEXCore/Utils/LogManager.h>
 #include <FEXCore/fextl/map.h>
-#include <FEXCore/fextl/memory.h>
 #include <FEXCore/fextl/string.h>
 #include <FEXCore/fextl/vector.h>

@@ -28,20 +24,16 @@ $end_info$

 #include <array>
 #include <cstdint>
-#include <functional>
-#include <optional>
 #include <utility>
 #include <variant>

 namespace FEXCore::Core {
 struct InternalThreadState;
 }
+
 namespace FEXCore::Context {
 struct ExitFunctionLinkData;
 }
-namespace FEXCore::IR {
-class RegisterAllocationPass;
-}

 namespace FEXCore::CPU {
 class Arm64JITCore final : public CPUBackend, public Arm64Emitter {
@@ -75,13 +67,7 @@ private:
  uint64_t Entry {};
  CPUBackend::CompiledCode CodeData {};

-  fextl::vector<ARMEmitter::BiDirectionalLabel> JumpTargets;
-
-  ARMEmitter::BiDirectionalLabel* JumpTarget(IR::OrderedNodeWrapper Node) {
-    auto Block = IR->GetOp<IR::IROp_CodeBlock>(Node);
-    return &JumpTargets[Block->ID];
-  }
-
+  fextl::map<IR::NodeID, ARMEmitter::BiDirectionalLabel> JumpTargets;
  fextl::map<IR::NodeID, ARMEmitter::BiDirectionalLabel> CallReturnTargets;

  struct PendingJumpThunk {
@@ -97,13 +83,11 @@ private:

  [[nodiscard]]
  ARMEmitter::Register GetReg(IR::PhysicalRegister Reg) const {
-    const auto RegClass = Reg.AsRegClass();
+    LOGMAN_THROW_A_FMT(Reg.Class == IR::GPRFixedClass.Val || Reg.Class == IR::GPRClass.Val, "Unexpected Class: {}", Reg.Class);

-    LOGMAN_THROW_A_FMT(RegClass == IR::RegClass::GPRFixed || RegClass == IR::RegClass::GPR, "Unexpected Class: {}", Reg.Class);
-
-    if (RegClass == IR::RegClass::GPRFixed) {
+    if (Reg.Class == IR::GPRFixedClass.Val) {
      return StaticRegisters[Reg.Reg];
-    } else if (RegClass == IR::RegClass::GPR) {
+    } else if (Reg.Class == IR::GPRClass.Val) {
      return GeneralRegisters[Reg.Reg];
    }

@@ -122,13 +106,11 @@ private:

  [[nodiscard]]
  ARMEmitter::VRegister GetVReg(IR::PhysicalRegister Reg) const {
-    const auto RegClass = Reg.AsRegClass();
+    LOGMAN_THROW_A_FMT(Reg.Class == IR::FPRFixedClass.Val || Reg.Class == IR::FPRClass.Val, "Unexpected Class: {}", Reg.Class);

-    LOGMAN_THROW_A_FMT(RegClass == IR::RegClass::FPRFixed || RegClass == IR::RegClass::FPR, "Unexpected Class: {}", Reg.Class);
-
-    if (RegClass == IR::RegClass::FPRFixed) {
+    if (Reg.Class == IR::FPRFixedClass.Val) {
      return StaticFPRegisters[Reg.Reg];
-    } else if (RegClass == IR::RegClass::FPR) {
+    } else if (Reg.Class == IR::FPRClass.Val) {
      return GeneralFPRegisters[Reg.Reg];
    }

@@ -146,8 +128,8 @@ private:
  }

  [[nodiscard]]
-  static IR::RegClass GetRegClass(IR::Ref Node) {
-    return IR::PhysicalRegister(Node).AsRegClass();
+  FEXCore::IR::RegisterClassType GetRegClass(IR::Ref Node) const {
+    return FEXCore::IR::RegisterClassType {IR::PhysicalRegister(Node).Class};
  }

  [[nodiscard]]
@@ -164,7 +146,7 @@ private:
  // Converts IR-base shift type to ARMEmitter shift type.
  // Will be a no-op, only a type conversion since the two definitions match.
  [[nodiscard]]
-  static ARMEmitter::ShiftType ConvertIRShiftType(IR::ShiftType Shift) {
+  ARMEmitter::ShiftType ConvertIRShiftType(IR::ShiftType Shift) const {
    return Shift == IR::ShiftType::LSL ? ARMEmitter::ShiftType::LSL :
           Shift == IR::ShiftType::LSR ? ARMEmitter::ShiftType::LSR :
           Shift == IR::ShiftType::ASR ? ARMEmitter::ShiftType::ASR :
@@ -172,23 +154,18 @@ private:
  }

  [[nodiscard]]
-  static ARMEmitter::Size ConvertSize(const IR::IROp_Header* Op) {
+  ARMEmitter::Size ConvertSize(const IR::IROp_Header* Op) {
    return Op->Size == IR::OpSize::i64Bit ? ARMEmitter::Size::i64Bit : ARMEmitter::Size::i32Bit;
  }

  [[nodiscard]]
-  static ARMEmitter::Size ConvertSize48(const IR::IROp_Header* Op) {
+  ARMEmitter::Size ConvertSize48(const IR::IROp_Header* Op) {
    LOGMAN_THROW_A_FMT(Op->Size == IR::OpSize::i32Bit || Op->Size == IR::OpSize::i64Bit, "Invalid size");
    return ConvertSize(Op);
  }

  [[nodiscard]]
-  static ARMEmitter::Size ConvertSize(IR::OpSize Size) {
-    return Size == IR::OpSize::i64Bit ? ARMEmitter::Size::i64Bit : ARMEmitter::Size::i32Bit;
-  }
-
-  [[nodiscard]]
-  static ARMEmitter::SubRegSize ConvertSubRegSize16(IR::OpSize ElementSize) {
+  ARMEmitter::SubRegSize ConvertSubRegSize16(IR::OpSize ElementSize) {
    LOGMAN_THROW_A_FMT(ElementSize == IR::OpSize::i8Bit || ElementSize == IR::OpSize::i16Bit || ElementSize == IR::OpSize::i32Bit ||
                         ElementSize == IR::OpSize::i64Bit || ElementSize == IR::OpSize::i128Bit,
                       "Invalid size");
@@ -200,105 +177,105 @@ private:
  }

  [[nodiscard]]
-  static ARMEmitter::SubRegSize ConvertSubRegSize16(const IR::IROp_Header* Op) {
+  ARMEmitter::SubRegSize ConvertSubRegSize16(const IR::IROp_Header* Op) {
    return ConvertSubRegSize16(Op->ElementSize);
  }

  [[nodiscard]]
-  static ARMEmitter::SubRegSize ConvertSubRegSize8(IR::OpSize ElementSize) {
+  ARMEmitter::SubRegSize ConvertSubRegSize8(IR::OpSize ElementSize) {
    LOGMAN_THROW_A_FMT(ElementSize != IR::OpSize::i128Bit, "Invalid size");
    return ConvertSubRegSize16(ElementSize);
  }

  [[nodiscard]]
-  static ARMEmitter::SubRegSize ConvertSubRegSize8(const IR::IROp_Header* Op) {
+  ARMEmitter::SubRegSize ConvertSubRegSize8(const IR::IROp_Header* Op) {
    return ConvertSubRegSize8(Op->ElementSize);
  }

  [[nodiscard]]
-  static ARMEmitter::SubRegSize ConvertSubRegSize4(const IR::IROp_Header* Op) {
+  ARMEmitter::SubRegSize ConvertSubRegSize4(const IR::IROp_Header* Op) {
    LOGMAN_THROW_A_FMT(Op->ElementSize != IR::OpSize::i64Bit, "Invalid size");
    return ConvertSubRegSize8(Op);
  }

  [[nodiscard]]
-  static ARMEmitter::SubRegSize ConvertSubRegSize248(const IR::IROp_Header* Op) {
+  ARMEmitter::SubRegSize ConvertSubRegSize248(const IR::IROp_Header* Op) {
    LOGMAN_THROW_A_FMT(Op->ElementSize != IR::OpSize::i8Bit, "Invalid size");
    return ConvertSubRegSize8(Op);
  }

  [[nodiscard]]
-  static ARMEmitter::VectorRegSizePair ConvertSubRegSizePair16(const IR::IROp_Header* Op) {
+  ARMEmitter::VectorRegSizePair ConvertSubRegSizePair16(const IR::IROp_Header* Op) {
    return ARMEmitter::ToVectorSizePair(ConvertSubRegSize16(Op));
  }

  [[nodiscard]]
-  static ARMEmitter::VectorRegSizePair ConvertSubRegSizePair8(const IR::IROp_Header* Op) {
+  ARMEmitter::VectorRegSizePair ConvertSubRegSizePair8(const IR::IROp_Header* Op) {
    LOGMAN_THROW_A_FMT(Op->ElementSize != IR::OpSize::i128Bit, "Invalid size");
    return ConvertSubRegSizePair16(Op);
  }

  [[nodiscard]]
-  static ARMEmitter::VectorRegSizePair ConvertSubRegSizePair248(const IR::IROp_Header* Op) {
+  ARMEmitter::VectorRegSizePair ConvertSubRegSizePair248(const IR::IROp_Header* Op) {
    LOGMAN_THROW_A_FMT(Op->ElementSize != IR::OpSize::i8Bit, "Invalid size");
    return ConvertSubRegSizePair8(Op);
  }

  [[nodiscard]]
-  static ARMEmitter::Condition MapCC(IR::CondClass Cond) {
-    switch (Cond) {
-    case IR::CondClass::EQ: return ARMEmitter::Condition::CC_EQ;
-    case IR::CondClass::NEQ: return ARMEmitter::Condition::CC_NE;
-    case IR::CondClass::SGE: return ARMEmitter::Condition::CC_GE;
-    case IR::CondClass::SLT: return ARMEmitter::Condition::CC_LT;
-    case IR::CondClass::SGT: return ARMEmitter::Condition::CC_GT;
-    case IR::CondClass::SLE: return ARMEmitter::Condition::CC_LE;
-    case IR::CondClass::UGE: return ARMEmitter::Condition::CC_CS;
-    case IR::CondClass::ULT: return ARMEmitter::Condition::CC_CC;
-    case IR::CondClass::UGT: return ARMEmitter::Condition::CC_HI;
-    case IR::CondClass::ULE: return ARMEmitter::Condition::CC_LS;
-    case IR::CondClass::FLU: return ARMEmitter::Condition::CC_LT;
-    case IR::CondClass::FGE: return ARMEmitter::Condition::CC_GE;
-    case IR::CondClass::FLEU: return ARMEmitter::Condition::CC_LE;
-    case IR::CondClass::FGT: return ARMEmitter::Condition::CC_GT;
-    case IR::CondClass::FU:
-    case IR::CondClass::VS: return ARMEmitter::Condition::CC_VS;
-    case IR::CondClass::FNU:
-    case IR::CondClass::VC: return ARMEmitter::Condition::CC_VC;
-    case IR::CondClass::MI: return ARMEmitter::Condition::CC_MI;
-    case IR::CondClass::PL: return ARMEmitter::Condition::CC_PL;
+  ARMEmitter::Condition MapCC(IR::CondClassType Cond) {
+    switch (Cond.Val) {
+    case FEXCore::IR::COND_EQ: return ARMEmitter::Condition::CC_EQ;
+    case FEXCore::IR::COND_NEQ: return ARMEmitter::Condition::CC_NE;
+    case FEXCore::IR::COND_SGE: return ARMEmitter::Condition::CC_GE;
+    case FEXCore::IR::COND_SLT: return ARMEmitter::Condition::CC_LT;
+    case FEXCore::IR::COND_SGT: return ARMEmitter::Condition::CC_GT;
+    case FEXCore::IR::COND_SLE: return ARMEmitter::Condition::CC_LE;
+    case FEXCore::IR::COND_UGE: return ARMEmitter::Condition::CC_CS;
+    case FEXCore::IR::COND_ULT: return ARMEmitter::Condition::CC_CC;
+    case FEXCore::IR::COND_UGT: return ARMEmitter::Condition::CC_HI;
+    case FEXCore::IR::COND_ULE: return ARMEmitter::Condition::CC_LS;
+    case FEXCore::IR::COND_FLU: return ARMEmitter::Condition::CC_LT;
+    case FEXCore::IR::COND_FGE: return ARMEmitter::Condition::CC_GE;
+    case FEXCore::IR::COND_FLEU: return ARMEmitter::Condition::CC_LE;
+    case FEXCore::IR::COND_FGT: return ARMEmitter::Condition::CC_GT;
+    case FEXCore::IR::COND_FU: return ARMEmitter::Condition::CC_VS;
+    case FEXCore::IR::COND_FNU: return ARMEmitter::Condition::CC_VC;
+    case FEXCore::IR::COND_VS:
+    case FEXCore::IR::COND_VC:
+    case FEXCore::IR::COND_MI: return ARMEmitter::Condition::CC_MI;
+    case FEXCore::IR::COND_PL: return ARMEmitter::Condition::CC_PL;
    default: LOGMAN_MSG_A_FMT("Unsupported compare type"); return ARMEmitter::Condition::CC_NV;
    }
  }

  [[nodiscard]]
-  static bool IsFPR(IR::RegClass Class) {
-    return Class == IR::RegClass::FPR || Class == IR::RegClass::FPRFixed;
+  bool IsFPR(IR::RegisterClassType Class) const {
+    return Class == IR::FPRClass || Class == IR::FPRFixedClass;
  }

  [[nodiscard]]
-  static bool IsGPR(IR::RegClass Class) {
-    return Class == IR::RegClass::GPR || Class == IR::RegClass::GPRFixed;
+  bool IsGPR(IR::RegisterClassType Class) const {
+    return Class == IR::GPRClass || Class == IR::GPRFixedClass;
  }

  [[nodiscard]]
-  static bool IsGPR(IR::Ref Node) {
+  bool IsGPR(IR::Ref Node) {
    return IsGPR(GetRegClass(Node));
  }

  [[nodiscard]]
-  static bool IsFPR(IR::Ref Node) {
+  bool IsFPR(IR::Ref Node) {
    return IsFPR(GetRegClass(Node));
  }

  [[nodiscard]]
-  static bool IsGPR(IR::OrderedNodeWrapper Wrap) {
-    return IsGPR(IR::PhysicalRegister(Wrap).AsRegClass());
+  bool IsGPR(IR::OrderedNodeWrapper Wrap) {
+    return IsGPR(IR::RegisterClassType {IR::PhysicalRegister(Wrap).Class});
  }

  [[nodiscard]]
-  static bool IsFPR(IR::OrderedNodeWrapper Wrap) {
-    return IsFPR(IR::PhysicalRegister(Wrap).AsRegClass());
+  bool IsFPR(IR::OrderedNodeWrapper Wrap) {
+    return IsFPR(IR::RegisterClassType {IR::PhysicalRegister(Wrap).Class});
  }

  [[nodiscard]]
@@ -397,9 +374,7 @@ private:
  fextl::vector<FEXCore::CPU::Relocation> Relocations;

  ///< Relocation code loading
-  bool ApplyRelocations(uint64_t GuestEntry, std::span<std::byte> Code, std::span<const FEXCore::CPU::Relocation>);
-
-  fextl::vector<FEXCore::CPU::Relocation> TakeRelocations() override;
+  bool ApplyRelocations(uint64_t GuestEntry, uint64_t CodeEntry, uint64_t CursorEntry, size_t NumRelocations, const char* EntryRelocations);

  /**  @} */

@@ -422,11 +397,9 @@ private:
  void Emulate128BitGather(IR::OpSize Size, IR::OpSize ElementSize, ARMEmitter::VRegister Dst, ARMEmitter::VRegister IncomingDst,
                           std::optional<ARMEmitter::Register> BaseAddr, ARMEmitter::VRegister VectorIndexLow,
                           std::optional<ARMEmitter::VRegister> VectorIndexHigh, ARMEmitter::VRegister MaskReg, IR::OpSize VectorIndexSize,
-                           size_t DataElementOffsetStart, size_t IndexElementOffsetStart, uint8_t OffsetScale, IR::OpSize AddrSize);
+                           size_t DataElementOffsetStart, size_t IndexElementOffsetStart, uint8_t OffsetScale);

-  void EmitTFCheck();
-
-  void EmitSuspendInterruptCheck();
+  void EmitInterruptChecks(bool CheckTF);

  void EmitEntryPoint(ARMEmitter::BackwardLabel& HeaderLabel, bool CheckTF);

@@ -21,7 +21,7 @@ DEF_OP(LoadContext) {
  const auto Op = IROp->C<IR::IROp_LoadContext>();
  const auto OpSize = IROp->Size;

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    auto Dst = GetReg(Node);

    switch (OpSize) {
@@ -52,7 +52,7 @@ DEF_OP(LoadContext) {
 DEF_OP(LoadContextPair) {
  const auto Op = IROp->C<IR::IROp_LoadContextPair>();

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst1 = GetReg(Op->OutValue1);
    const auto Dst2 = GetReg(Op->OutValue2);

@@ -78,7 +78,7 @@ DEF_OP(StoreContext) {
  const auto Op = IROp->C<IR::IROp_StoreContext>();
  const auto OpSize = IROp->Size;

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    auto Src = GetZeroableReg(Op->Value);

    switch (OpSize) {
@@ -110,7 +110,7 @@ DEF_OP(StoreContextPair) {
  const auto Op = IROp->C<IR::IROp_StoreContextPair>();
  const auto OpSize = IROp->Size;

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    auto Src1 = GetZeroableReg(Op->Value1);
    auto Src2 = GetZeroableReg(Op->Value2);

@@ -135,12 +135,12 @@ DEF_OP(StoreContextPair) {
 DEF_OP(LoadRegister) {
  const auto Op = IROp->C<IR::IROp_LoadRegister>();

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == IR::GPRClass) {
    LOGMAN_THROW_A_FMT(Op->Reg < StaticRegisters.size(), "out of range reg");

    mov(GetReg(Node).X(), StaticRegisters[Op->Reg].X());
-  } else if (Op->Class == IR::RegClass::FPR) {
-    const auto regSize = HostSupportsAVX256 ? IR::OpSize::i256Bit : IR::OpSize::i128Bit;
+  } else if (Op->Class == IR::FPRClass) {
+    [[maybe_unused]] const auto regSize = HostSupportsAVX256 ? IR::OpSize::i256Bit : IR::OpSize::i128Bit;
    LOGMAN_THROW_A_FMT(Op->Reg < StaticFPRegisters.size(), "out of range reg");
    LOGMAN_THROW_A_FMT(IROp->Size == regSize, "expected sized");

@@ -175,14 +175,13 @@ DEF_OP(LoadAF) {

 DEF_OP(StoreRegister) {
  const auto Op = IROp->C<IR::IROp_StoreRegister>();
-  const auto Reg = IR::PhysicalRegister(Node);
-  const auto RegClass = Reg.AsRegClass();
+  auto Reg = IR::PhysicalRegister(Node);

-  if (RegClass == IR::RegClass::GPRFixed) {
+  if (Reg.Class == IR::GPRFixedClass) {
    // Always use 64-bit, it's faster. Upper bits ignored for 32-bit mode.
    mov(ARMEmitter::Size::i64Bit, GetReg(Reg), GetReg(Op->Value));
-  } else if (RegClass == IR::RegClass::FPRFixed) {
-    const auto regSize = HostSupportsAVX256 ? IR::OpSize::i256Bit : IR::OpSize::i128Bit;
+  } else if (Reg.Class == IR::FPRFixedClass) {
+    [[maybe_unused]] const auto regSize = HostSupportsAVX256 ? IR::OpSize::i256Bit : IR::OpSize::i128Bit;
    LOGMAN_THROW_A_FMT(IROp->Size == regSize, "expected sized");

    const auto guest = GetVReg(Reg);
@@ -194,7 +193,7 @@ DEF_OP(StoreRegister) {
      mov(guest.Q(), host.Q());
    }
  } else {
-    LOGMAN_THROW_A_FMT(false, "Unhandled Op->Class {}", RegClass);
+    LOGMAN_THROW_A_FMT(false, "Unhandled Op->Class {}", Reg.Class);
  }
 }

@@ -226,7 +225,7 @@ DEF_OP(LoadContextIndexed) {

  const auto Index = GetReg(Op->Index);

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    switch (Op->Stride) {
    case 1:
    case 2:
@@ -289,7 +288,7 @@ DEF_OP(StoreContextIndexed) {

  const auto Index = GetReg(Op->Index);

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Value = GetReg(Op->Value);

    switch (Op->Stride) {
@@ -349,31 +348,12 @@ DEF_OP(StoreContextIndexed) {
  }
 }

-DEF_OP(FormContextAddress) {
-  const auto Op = IROp->C<IR::IROp_FormContextAddress>();
-  const auto Index = GetReg(Op->Index);
-  const auto Dst = GetReg(Node);
-
-  switch (Op->Stride) {
-  case 1:
-  case 2:
-  case 4:
-  case 8:
-  case 16:
-  case 32: {
-    add(ARMEmitter::Size::i64Bit, Dst, STATE, Index, ARMEmitter::ShiftType::LSL, FEXCore::ilog2(Op->Stride));
-    break;
-  }
-  default: LOGMAN_MSG_A_FMT("Unhandled FormContextAddress stride: {}", Op->Stride); break;
-  }
-}
-
 DEF_OP(SpillRegister) {
  const auto Op = IROp->C<IR::IROp_SpillRegister>();
  const auto OpSize = IROp->Size;
  const uint32_t SlotOffset = Op->Slot * MaxSpillSlotSize;

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Src = GetReg(Op->Value);
    switch (OpSize) {
    case IR::OpSize::i8Bit: {
@@ -414,7 +394,7 @@ DEF_OP(SpillRegister) {
    }
    default: LOGMAN_MSG_A_FMT("Unhandled SpillRegister size: {}", OpSize); break;
    }
-  } else if (Op->Class == FEXCore::IR::RegClass::FPR) {
+  } else if (Op->Class == FEXCore::IR::FPRClass) {
    const auto Src = GetVReg(Op->Value);

    switch (OpSize) {
@@ -453,7 +433,7 @@ DEF_OP(SpillRegister) {
    default: LOGMAN_MSG_A_FMT("Unhandled SpillRegister size: {}", OpSize); break;
    }
  } else {
-    LOGMAN_MSG_A_FMT("Unhandled SpillRegister class: {}", Op->Class);
+    LOGMAN_MSG_A_FMT("Unhandled SpillRegister class: {}", Op->Class.Val);
  }
 }

@@ -462,7 +442,7 @@ DEF_OP(FillRegister) {
  const auto OpSize = IROp->Size;
  const uint32_t SlotOffset = Op->Slot * MaxSpillSlotSize;

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst = GetReg(Node);
    switch (OpSize) {
    case IR::OpSize::i8Bit: {
@@ -503,7 +483,7 @@ DEF_OP(FillRegister) {
    }
    default: LOGMAN_MSG_A_FMT("Unhandled FillRegister size: {}", OpSize); break;
    }
-  } else if (Op->Class == FEXCore::IR::RegClass::FPR) {
+  } else if (Op->Class == FEXCore::IR::FPRClass) {
    const auto Dst = GetVReg(Node);

    switch (OpSize) {
@@ -542,7 +522,7 @@ DEF_OP(FillRegister) {
    default: LOGMAN_MSG_A_FMT("Unhandled FillRegister size: {}", OpSize); break;
    }
  } else {
-    LOGMAN_MSG_A_FMT("Unhandled FillRegister class: {}", Op->Class);
+    LOGMAN_MSG_A_FMT("Unhandled FillRegister class: {}", Op->Class.Val);
  }
 }

@@ -579,14 +559,14 @@ ARMEmitter::ExtendedMemOperand Arm64JITCore::GenerateMemOperand(
      return ARMEmitter::ExtendedMemOperand(Base.X(), ARMEmitter::IndexType::OFFSET, Const);
    } else {
      auto RegOffset = GetReg(Offset);
-      switch (OffsetType) {
-      case IR::MemOffsetType::SXTX:
+      switch (OffsetType.Val) {
+      case IR::MEM_OFFSET_SXTX.Val:
        return ARMEmitter::ExtendedMemOperand(Base.X(), RegOffset.X(), ARMEmitter::ExtendedType::SXTX, FEXCore::ilog2(OffsetScale));
-      case IR::MemOffsetType::UXTW:
+      case IR::MEM_OFFSET_UXTW.Val:
        return ARMEmitter::ExtendedMemOperand(Base.X(), RegOffset.X(), ARMEmitter::ExtendedType::UXTW, FEXCore::ilog2(OffsetScale));
-      case IR::MemOffsetType::SXTW:
+      case IR::MEM_OFFSET_SXTW.Val:
        return ARMEmitter::ExtendedMemOperand(Base.X(), RegOffset.X(), ARMEmitter::ExtendedType::SXTW, FEXCore::ilog2(OffsetScale));
-      default: LOGMAN_MSG_A_FMT("Unhandled GenerateMemOperand OffsetType: {}", OffsetType); break;
+      default: LOGMAN_MSG_A_FMT("Unhandled GenerateMemOperand OffsetType: {}", OffsetType.Val); break;
      }
    }
  }
@@ -613,20 +593,20 @@ ARMEmitter::Register Arm64JITCore::ApplyMemOperand(IR::OpSize AccessSize, ARMEmi
    add(ARMEmitter::Size::i64Bit, Tmp, Base, Tmp, ARMEmitter::ShiftType::LSL, FEXCore::ilog2(OffsetScale));
  } else {
    auto RegOffset = GetReg(Offset);
-    switch (OffsetType) {
-    case IR::MemOffsetType::SXTX:
+    switch (OffsetType.Val) {
+    case IR::MEM_OFFSET_SXTX.Val:
      add(ARMEmitter::Size::i64Bit, Tmp, Base, RegOffset, ARMEmitter::ExtendedType::SXTX, FEXCore::ilog2(OffsetScale));
      break;

-    case IR::MemOffsetType::UXTW:
+    case IR::MEM_OFFSET_UXTW.Val:
      add(ARMEmitter::Size::i64Bit, Tmp, Base, RegOffset, ARMEmitter::ExtendedType::UXTW, FEXCore::ilog2(OffsetScale));
      break;

-    case IR::MemOffsetType::SXTW:
+    case IR::MEM_OFFSET_SXTW.Val:
      add(ARMEmitter::Size::i64Bit, Tmp, Base, RegOffset, ARMEmitter::ExtendedType::SXTW, FEXCore::ilog2(OffsetScale));
      break;

-    default: LOGMAN_MSG_A_FMT("Unhandled OffsetType: {}", OffsetType); break;
+    default: LOGMAN_MSG_A_FMT("Unhandled OffsetType: {}", OffsetType.Val); break;
    }
  }
  return Tmp;
@@ -677,7 +657,7 @@ ARMEmitter::SVEMemOperand Arm64JITCore::GenerateSVEMemOperand(IR::OpSize AccessS
  // Note that we do nothing with the offset type and offset scale,
  // since SVE loads and stores don't have the ability to perform an
  // optional extension or shift as part of their behavior.
-  LOGMAN_THROW_A_FMT(OffsetType == IR::MemOffsetType::SXTX, "Currently only the default offset type (SXTX) is supported.");
+  LOGMAN_THROW_A_FMT(OffsetType.Val == IR::MEM_OFFSET_SXTX.Val, "Currently only the default offset type (SXTX) is supported.");

  const auto RegOffset = GetReg(Offset);
  return ARMEmitter::SVEMemOperand(Base.X(), RegOffset.X());
@@ -690,7 +670,7 @@ DEF_OP(LoadMem) {
  const auto MemReg = GetReg(Op->Addr);
  const auto MemSrc = GenerateMemOperand(OpSize, MemReg, Op->Offset, Op->OffsetType, Op->OffsetScale);

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst = GetReg(Node);

    switch (OpSize) {
@@ -724,7 +704,7 @@ DEF_OP(LoadMemPair) {
  const auto Op = IROp->C<IR::IROp_LoadMemPair>();
  const auto Addr = GetReg(Op->Addr);

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst1 = GetReg(Op->OutValue1);
    const auto Dst2 = GetReg(Op->OutValue2);

@@ -752,17 +732,17 @@ DEF_OP(LoadMemTSO) {

  const auto MemReg = GetReg(Op->Addr);

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    LOGMAN_THROW_A_FMT(Op->Offset.IsInvalid() || CTX->HostFeatures.SupportsTSOImm9, "unexpected offset");
    LOGMAN_THROW_A_FMT(Op->OffsetScale == 1, "unexpected offset scale");
-    LOGMAN_THROW_A_FMT(Op->OffsetType == IR::MemOffsetType::SXTX, "unexpected offset type");
+    LOGMAN_THROW_A_FMT(Op->OffsetType == IR::MEM_OFFSET_SXTX, "unexpected offset type");
  }

-  if (CTX->HostFeatures.SupportsTSOImm9 && Op->Class == IR::RegClass::GPR) {
+  if (CTX->HostFeatures.SupportsTSOImm9 && Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst = GetReg(Node);
    uint64_t Offset = 0;
    if (!Op->Offset.IsInvalid()) {
-      bool IsInline = IsInlineConstant(Op->Offset, &Offset);
+      [[maybe_unused]] bool IsInline = IsInlineConstant(Op->Offset, &Offset);
      LOGMAN_THROW_A_FMT(IsInline, "expected immediate");
    }

@@ -780,7 +760,7 @@ DEF_OP(LoadMemTSO) {
      // Half-barrier once back-patched.
      nop();
    }
-  } else if (CTX->HostFeatures.SupportsRCPC && Op->Class == IR::RegClass::GPR) {
+  } else if (CTX->HostFeatures.SupportsRCPC && Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst = GetReg(Node);
    if (OpSize == IR::OpSize::i8Bit) {
      // 8bit load is always aligned to natural alignment
@@ -795,7 +775,7 @@ DEF_OP(LoadMemTSO) {
      // Half-barrier once back-patched.
      nop();
    }
-  } else if (Op->Class == IR::RegClass::GPR) {
+  } else if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst = GetReg(Node);
    if (OpSize == IR::OpSize::i8Bit) {
      // 8bit load is always aligned to natural alignment
@@ -1040,7 +1020,7 @@ void Arm64JITCore::Emulate128BitGather(IR::OpSize Size, IR::OpSize ElementSize,
                                       ARMEmitter::VRegister IncomingDst, std::optional<ARMEmitter::Register> BaseAddr,
                                       ARMEmitter::VRegister VectorIndexLow, std::optional<ARMEmitter::VRegister> VectorIndexHigh,
                                       ARMEmitter::VRegister MaskReg, IR::OpSize VectorIndexSize, size_t DataElementOffsetStart,
-                                       size_t IndexElementOffsetStart, uint8_t OffsetScale, IR::OpSize AddrSize) {
+                                       size_t IndexElementOffsetStart, uint8_t OffsetScale) {
  LOGMAN_THROW_A_FMT(ElementSize >= IR::OpSize::i8Bit && ElementSize <= IR::OpSize::i64Bit, "Invalid element size");

  const auto PerformSMove = [this](IR::OpSize ElementSize, const ARMEmitter::Register Dst, const ARMEmitter::VRegister Vector, int index) {
@@ -1116,17 +1096,17 @@ void Arm64JITCore::Emulate128BitGather(IR::OpSize Size, IR::OpSize ElementSize,
    // Calculate memory position for this gather load
    if (BaseAddr.has_value()) {
      if (VectorIndexSize == IR::OpSize::i32Bit) {
-        add(ConvertSize(AddrSize), TempMemReg, *BaseAddr, WorkingReg, ARMEmitter::ExtendedType::SXTW, FEXCore::ilog2(OffsetScale));
+        add(ARMEmitter::Size::i64Bit, TempMemReg, *BaseAddr, WorkingReg, ARMEmitter::ExtendedType::SXTW, FEXCore::ilog2(OffsetScale));
      } else {
-        add(ConvertSize(AddrSize), TempMemReg, *BaseAddr, WorkingReg, ARMEmitter::ShiftType::LSL, FEXCore::ilog2(OffsetScale));
+        add(ARMEmitter::Size::i64Bit, TempMemReg, *BaseAddr, WorkingReg, ARMEmitter::ShiftType::LSL, FEXCore::ilog2(OffsetScale));
      }
    } else {
      ///< In this case we have no base address, All addresses come from the vector register itself
      if (VectorIndexSize == IR::OpSize::i32Bit) {
        // Sign extend and shift in to the 64-bit register
-        sbfiz(ConvertSize(AddrSize), TempMemReg, WorkingReg, FEXCore::ilog2(OffsetScale), 32);
+        sbfiz(ARMEmitter::Size::i64Bit, TempMemReg, WorkingReg, FEXCore::ilog2(OffsetScale), 32);
      } else {
-        lsl(ConvertSize(AddrSize), TempMemReg, WorkingReg, FEXCore::ilog2(OffsetScale));
+        lsl(ARMEmitter::Size::i64Bit, TempMemReg, WorkingReg, FEXCore::ilog2(OffsetScale));
      }
    }

@@ -1184,8 +1164,7 @@ DEF_OP(VLoadVectorGatherMasked) {

  ///< If the host supports SVE and the offset scale matches SVE limitations then it can do an SVE style load.
  const bool SupportsSVELoad = (HostSupportsSVE128 || HostSupportsSVE256) &&
-                               (OffsetScale == 1 || OffsetScale == IR::OpSizeToSize(VectorIndexSize)) &&
-                               VectorIndexSize == IROp->ElementSize && Op->AddrSize == IR::OpSize::i64Bit;
+                               (OffsetScale == 1 || OffsetScale == IR::OpSizeToSize(VectorIndexSize)) && VectorIndexSize == IROp->ElementSize;

  if (SupportsSVELoad) {
    uint8_t SVEScale = FEXCore::ilog2(OffsetScale);
@@ -1243,7 +1222,7 @@ DEF_OP(VLoadVectorGatherMasked) {
  } else {
    LOGMAN_THROW_A_FMT(!Is256Bit, "Can't emulate this gather load in the backend! Programming error!");
    Emulate128BitGather(IROp->Size, IROp->ElementSize, Dst, IncomingDst, BaseAddr, VectorIndexLow, VectorIndexHigh, MaskReg,
-                        VectorIndexSize, DataElementOffsetStart, IndexElementOffsetStart, OffsetScale, Op->AddrSize);
+                        VectorIndexSize, DataElementOffsetStart, IndexElementOffsetStart, OffsetScale);
  }
 }

@@ -1268,9 +1247,7 @@ DEF_OP(VLoadVectorGatherMaskedQPS) {
    !Op->VectorIndexHigh.IsInvalid() ? std::make_optional(GetVReg(Op->VectorIndexHigh)) : std::nullopt;

  ///< If the host supports SVE and the offset scale matches SVE limitations then it can do an SVE style load.
-  const bool SupportsSVELoad = HostSupportsSVE128 && (OffsetScale == 1 || OffsetScale == 4) && Op->AddrSize == IR::OpSize::i64Bit;
-
-  if (SupportsSVELoad) {
+  if (HostSupportsSVE128 && (OffsetScale == 1 || OffsetScale == 4)) {
    ARMEmitter::SVEModType ModType = ARMEmitter::SVEModType::MOD_NONE;
    if (OffsetScale != 1) {
      ModType = ARMEmitter::SVEModType::MOD_LSL;
@@ -1324,7 +1301,7 @@ DEF_OP(VLoadVectorGatherMaskedQPS) {
    }
  } else {
    Emulate128BitGather(IR::OpSize::i128Bit, IR::OpSize::i32Bit, Dst, IncomingDst, BaseAddr, VectorIndexLow, VectorIndexHigh, MaskReg,
-                        IR::OpSize::i64Bit, 0, 0, OffsetScale, Op->AddrSize);
+                        IR::OpSize::i64Bit, 0, 0, OffsetScale);
  }
 }

@@ -1625,7 +1602,7 @@ DEF_OP(StoreMem) {
  const auto MemReg = GetReg(Op->Addr);
  const auto MemSrc = GenerateMemOperand(OpSize, MemReg, Op->Offset, Op->OffsetType, Op->OffsetScale);

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Src = GetZeroableReg(Op->Value);
    switch (OpSize) {
    case IR::OpSize::i8Bit: strb(Src, MemSrc); break;
@@ -1736,7 +1713,7 @@ DEF_OP(StoreMemPair) {
  const auto OpSize = IROp->Size;
  const auto Addr = GetReg(Op->Addr);

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Src1 = GetZeroableReg(Op->Value1);
    const auto Src2 = GetZeroableReg(Op->Value2);
    switch (OpSize) {
@@ -1763,17 +1740,17 @@ DEF_OP(StoreMemTSO) {

  const auto MemReg = GetReg(Op->Addr);

-  if (Op->Class == IR::RegClass::GPR) {
+  if (Op->Class == FEXCore::IR::GPRClass) {
    LOGMAN_THROW_A_FMT(Op->Offset.IsInvalid() || CTX->HostFeatures.SupportsTSOImm9, "unexpected offset");
    LOGMAN_THROW_A_FMT(Op->OffsetScale == 1, "unexpected offset scale");
-    LOGMAN_THROW_A_FMT(Op->OffsetType == IR::MemOffsetType::SXTX, "unexpected offset type");
+    LOGMAN_THROW_A_FMT(Op->OffsetType == IR::MEM_OFFSET_SXTX, "unexpected offset type");
  }

-  if (CTX->HostFeatures.SupportsTSOImm9 && Op->Class == IR::RegClass::GPR) {
+  if (CTX->HostFeatures.SupportsTSOImm9 && Op->Class == FEXCore::IR::GPRClass) {
    const auto Src = GetZeroableReg(Op->Value);
    uint64_t Offset = 0;
    if (!Op->Offset.IsInvalid()) {
-      bool IsInline = IsInlineConstant(Op->Offset, &Offset);
+      [[maybe_unused]] bool IsInline = IsInlineConstant(Op->Offset, &Offset);
      LOGMAN_THROW_A_FMT(IsInline, "expected immediate");
    }

@@ -1790,7 +1767,7 @@ DEF_OP(StoreMemTSO) {
      default: LOGMAN_MSG_A_FMT("Unhandled StoreMemTSO size: {}", OpSize); break;
      }
    }
-  } else if (Op->Class == IR::RegClass::GPR) {
+  } else if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Src = GetZeroableReg(Op->Value);

    if (OpSize == IR::OpSize::i8Bit) {
@@ -2303,7 +2280,7 @@ DEF_OP(ParanoidLoadMemTSO) {

  auto MemReg = GetReg(Op->Addr);

-  if (CTX->HostFeatures.SupportsTSOImm9 && Op->Class == IR::RegClass::GPR) {
+  if (CTX->HostFeatures.SupportsTSOImm9 && Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst = GetReg(Node);
    uint64_t Offset = 0;
    if (!Op->Offset.IsInvalid()) {
@@ -2324,7 +2301,7 @@ DEF_OP(ParanoidLoadMemTSO) {
      default: LOGMAN_MSG_A_FMT("Unhandled ParanoidLoadMemTSO size: {}", OpSize); break;
      }
    }
-  } else if (CTX->HostFeatures.SupportsRCPC && Op->Class == IR::RegClass::GPR) {
+  } else if (CTX->HostFeatures.SupportsRCPC && Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst = GetReg(Node);
    MemReg = ApplyMemOperand(OpSize, MemReg, TMP4, Op->Offset, Op->OffsetType, Op->OffsetScale);
    if (OpSize == IR::OpSize::i8Bit) {
@@ -2338,7 +2315,7 @@ DEF_OP(ParanoidLoadMemTSO) {
      default: LOGMAN_MSG_A_FMT("Unhandled ParanoidLoadMemTSO size: {}", OpSize); break;
      }
    }
-  } else if (Op->Class == IR::RegClass::GPR) {
+  } else if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Dst = GetReg(Node);
    MemReg = ApplyMemOperand(OpSize, MemReg, TMP4, Op->Offset, Op->OffsetType, Op->OffsetScale);
    switch (OpSize) {
@@ -2391,7 +2368,7 @@ DEF_OP(ParanoidStoreMemTSO) {

  auto MemReg = GetReg(Op->Addr);

-  if (CTX->HostFeatures.SupportsTSOImm9 && Op->Class == IR::RegClass::GPR) {
+  if (CTX->HostFeatures.SupportsTSOImm9 && Op->Class == FEXCore::IR::GPRClass) {
    const auto Src = GetZeroableReg(Op->Value);
    uint64_t Offset = 0;
    if (!Op->Offset.IsInvalid()) {
@@ -2411,7 +2388,7 @@ DEF_OP(ParanoidStoreMemTSO) {
      default: LOGMAN_MSG_A_FMT("Unhandled ParanoidStoreMemTSO size: {}", OpSize); break;
      }
    }
-  } else if (Op->Class == IR::RegClass::GPR) {
+  } else if (Op->Class == FEXCore::IR::GPRClass) {
    const auto Src = GetZeroableReg(Op->Value);
    MemReg = ApplyMemOperand(OpSize, MemReg, TMP1, Op->Offset, Op->OffsetType, Op->OffsetScale);
    switch (OpSize) {
@@ -2609,7 +2586,7 @@ DEF_OP(VStoreNonTemporalPair) {
  const auto Op = IROp->C<IR::IROp_VStoreNonTemporalPair>();
  const auto OpSize = IROp->Size;

-  const auto Is128Bit = OpSize == IR::OpSize::i128Bit;
+  [[maybe_unused]] const auto Is128Bit = OpSize == IR::OpSize::i128Bit;
  LOGMAN_THROW_A_FMT(Is128Bit, "This IR operation only operates at 128-bit wide");

  const auto ValueLow = GetVReg(Op->ValueLow);
@@ -10,12 +10,10 @@ $end_info$
 #endif

 #include "Interface/Context/Context.h"
-#include "Interface/Core/JIT/DebugData.h"
 #include "Interface/Core/JIT/JITClass.h"
+#include "FEXCore/Debug/InternalThreadState.h"

 #include <FEXCore/Core/SignalDelegator.h>
-#include <FEXCore/Debug/InternalThreadState.h>
-#include <FEXCore/Utils/EnumUtils.h>

 namespace FEXCore::CPU {

@@ -48,10 +46,10 @@ DEF_OP(GuestOpcode) {
 DEF_OP(Fence) {
  auto Op = IROp->C<IR::IROp_Fence>();
  switch (Op->Fence) {
-  case IR::FenceType::Load: dmb(ARMEmitter::BarrierScope::LD); break;
-  case IR::FenceType::LoadStore: dmb(ARMEmitter::BarrierScope::SY); break;
-  case IR::FenceType::Store: dmb(ARMEmitter::BarrierScope::ST); break;
-  case IR::FenceType::Inst: isb(); break;
+  case IR::Fence_Load.Val: dmb(ARMEmitter::BarrierScope::LD); break;
+  case IR::Fence_LoadStore.Val: dmb(ARMEmitter::BarrierScope::SY); break;
+  case IR::Fence_Store.Val: dmb(ARMEmitter::BarrierScope::ST); break;
+  case IR::Fence_Inst.Val: isb(); break;
  default: LOGMAN_MSG_A_FMT("Unknown Fence: {}", Op->Fence); break;
  }
 }
@@ -108,10 +106,10 @@ DEF_OP(GetRoundingMode) {
  // zero. Just swapping 01 and 10. That's a bitfield reverse. Round mode is in
  // bottom two bits. After reversing as a 32-bit operation, it'll be in [31:30]
  // and ripe for reinsertion back at 0.
-  static_assert(FEXCore::ToUnderlying(IR::RoundMode::Nearest) == 0);
-  static_assert(FEXCore::ToUnderlying(IR::RoundMode::NegInfinity) == 1);
-  static_assert(FEXCore::ToUnderlying(IR::RoundMode::PosInfinity) == 2);
-  static_assert(FEXCore::ToUnderlying(IR::RoundMode::TowardsZero) == 3);
+  static_assert(IR::ROUND_MODE_NEAREST == 0);
+  static_assert(IR::ROUND_MODE_NEGATIVE_INFINITY == 1);
+  static_assert(IR::ROUND_MODE_POSITIVE_INFINITY == 2);
+  static_assert(IR::ROUND_MODE_TOWARDS_ZERO == 3);

  rbit(ARMEmitter::Size::i32Bit, TMP1, Dst);
  bfi(ARMEmitter::Size::i64Bit, Dst, TMP1, 30, 2);
@@ -288,43 +286,4 @@ DEF_OP(Yield) {
  yield();
 }

-DEF_OP(MonoBackpatcherWrite) {
-  auto Op = IROp->C<IR::IROp_MonoBackpatcherWrite>();
-
-  mov(ARMEmitter::Size::i64Bit, TMP3, GetReg(Op->Addr));
-  mov(ARMEmitter::Size::i64Bit, TMP4, GetReg(Op->Value));
-
-  PushDynamicRegs(TMP1);
-  SpillStaticRegs(TMP1);
-
-  mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r0, STATE.R());
-  mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r1, IR::OpSizeToSize(Op->Size));
-
-  if (!TMP_ABIARGS) {
-    mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r2, TMP3);
-    mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r3, TMP4);
-  }
-
-#ifdef _M_ARM_64EC
-  ldr(TMP2, ARMEmitter::XReg::x18, TEB_CPU_AREA_OFFSET);
-  LoadConstant(ARMEmitter::Size::i32Bit, TMP1, 1);
-  strb(TMP1.W(), TMP2, CPU_AREA_IN_SYSCALL_CALLBACK_OFFSET);
-#endif
-
-  ldr(ARMEmitter::XReg::x4, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.MonoBackpatcherWrite));
-  if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
-    GenerateIndirectRuntimeCall<void, void*, uint8_t, uint64_t, uint64_t>(ARMEmitter::Reg::r4);
-  } else {
-    blr(ARMEmitter::Reg::r4);
-  }
-
-#ifdef _M_ARM_64EC
-  ldr(TMP2, ARMEmitter::XReg::x18, TEB_CPU_AREA_OFFSET);
-  strb(ARMEmitter::WReg::zr, TMP2, CPU_AREA_IN_SYSCALL_CALLBACK_OFFSET);
-#endif
-
-  FillStaticRegs();
-  PopDynamicRegs();
-}
-
 } // namespace FEXCore::CPU
@@ -18,4 +18,18 @@ DEF_OP(RMWHandle) {
  mov(ARMEmitter::Size::i64Bit, GetReg(Node), GetReg(IROp->Args[0]));
 }

+DEF_OP(Swap1) {
+  auto Op = IROp->C<IR::IROp_Swap1>();
+  auto A = GetReg(Op->A), B = GetReg(Op->B);
+  LOGMAN_THROW_A_FMT(B == GetReg(Node), "Invariant");
+
+  mov(ARMEmitter::Size::i64Bit, TMP1, A);
+  mov(ARMEmitter::Size::i64Bit, A, B);
+  mov(ARMEmitter::Size::i64Bit, B, TMP1);
+}
+
+DEF_OP(Swap2) {
+  // Implemented above
+}
+
 } // namespace FEXCore::CPU
@@ -41,7 +41,6 @@ namespace FEXCore::CPU {
    const auto Op = IROp->C<IR::IROp_##FEXOp>();                                                                                    \
    const auto OpSize = IROp->Size;                                                                                                 \
    const auto Is256Bit = OpSize == IR::OpSize::i256Bit;                                                                            \
-    const auto Is128Bit = OpSize == IR::OpSize::i128Bit;                                                                            \
    LOGMAN_THROW_A_FMT(!Is256Bit || HostSupportsSVE256, "Need SVE256 support in order to use {} with 256-bit operation", __func__); \
                                                                                                                                    \
    const auto Dst = GetVReg(Node);                                                                                                 \
@@ -50,10 +49,8 @@ namespace FEXCore::CPU {
                                                                                                                                    \
    if (HostSupportsSVE256 && Is256Bit) {                                                                                           \
      ARMOp(Dst.Z(), Vector1.Z(), Vector2.Z());                                                                                     \
-    } else if (Is128Bit) {                                                                                                          \
-      ARMOp(Dst.Q(), Vector1.Q(), Vector2.Q());                                                                                     \
    } else {                                                                                                                        \
-      ARMOp(Dst.D(), Vector1.D(), Vector2.D());                                                                                     \
+      ARMOp(Dst.Q(), Vector1.Q(), Vector2.Q());                                                                                     \
    }                                                                                                                               \
  }

@@ -747,11 +744,11 @@ DEF_OP(VFToIScalarInsert) {
    auto Src = *std::get_if<ARMEmitter::VRegister>(&SrcVar);

    switch (RoundMode) {
-    case IR::RoundMode::Nearest: frintn(SubRegSize.Scalar, Dst, Src); break;
-    case IR::RoundMode::NegInfinity: frintm(SubRegSize.Scalar, Dst, Src); break;
-    case IR::RoundMode::PosInfinity: frintp(SubRegSize.Scalar, Dst, Src); break;
-    case IR::RoundMode::TowardsZero: frintz(SubRegSize.Scalar, Dst, Src); break;
-    case IR::RoundMode::Host: frinti(SubRegSize.Scalar, Dst, Src); break;
+    case IR::Round_Nearest: frintn(SubRegSize.Scalar, Dst, Src); break;
+    case IR::Round_Negative_Infinity: frintm(SubRegSize.Scalar, Dst, Src); break;
+    case IR::Round_Positive_Infinity: frintp(SubRegSize.Scalar, Dst, Src); break;
+    case IR::Round_Towards_Zero: frintz(SubRegSize.Scalar, Dst, Src); break;
+    case IR::Round_Host: frinti(SubRegSize.Scalar, Dst, Src); break;
    }
  };

@@ -1355,7 +1352,7 @@ DEF_OP(VFMin) {

  const auto ElementSize = Op->Header.ElementSize;
  const auto SubRegSize = ConvertSubRegSize248(IROp);
-  const auto IsScalar = ElementSize == OpSize;
+  [[maybe_unused]] const auto IsScalar = ElementSize == OpSize;
  const auto Is256Bit = OpSize == IR::OpSize::i256Bit;
  LOGMAN_THROW_A_FMT(!Is256Bit || HostSupportsSVE256, "Need SVE256 support in order to use {} with 256-bit operation", __func__);

@@ -1428,7 +1425,7 @@ DEF_OP(VFMax) {

  const auto ElementSize = Op->Header.ElementSize;
  const auto SubRegSize = ConvertSubRegSize248(IROp);
-  const auto IsScalar = ElementSize == OpSize;
+  [[maybe_unused]] const auto IsScalar = ElementSize == OpSize;
  const auto Is256Bit = OpSize == IR::OpSize::i256Bit;
  LOGMAN_THROW_A_FMT(!Is256Bit || HostSupportsSVE256, "Need SVE256 support in order to use {} with 256-bit operation", __func__);

@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: MIT
+#pragma once
+
+#include <FEXCore/Utils/CompilerDefs.h>
+
+#include <cstdint>
+
+namespace FEXCore::CodeSerialize {
+// If any of the config options mismatch on load then the cache won't be used
+// Any of these will result in codegen changes
+struct FEX_PACKED CodeObjectSerializationConfig {
+  // Cookie in the header of the file, isn't part of the config hash
+  uint64_t Cookie {};
+
+  // Instructions per block configuration
+  int32_t MaxInstPerBlock {};
+
+  // Follows CPUID 4000_0001_EAX[3:0]
+  unsigned Arch : 4;
+
+  // Multiblock enabled
+  unsigned MultiBlock : 1;
+
+  // Hardware TSO enabled
+  unsigned HardwareTSOEnabled : 1;
+
+  // TSO enabled
+  unsigned TSOEnabled : 1;
+
+  // ABI local flag unsafe optimization
+  unsigned ABILocalFlags : 1;
+
+  // Paranoid TSO mode enabled
+  unsigned ParanoidTSO : 1;
+
+  // Guest code execution mode (We don't support live mode switch)
+  unsigned Is64BitMode : 1;
+
+  // SMC checks style
+  unsigned SMCChecks : 2;
+
+  // x87 reduced precision
+  unsigned x87ReducedPrecision : 1;
+
+  // Padding to remove uninitialized data warning from asan
+  // Shows remaining amount of bits available for config
+  unsigned _Pad : 19;
+
+  bool operator==(const CodeObjectSerializationConfig& other) const {
+    return Cookie == other.Cookie && MaxInstPerBlock == other.MaxInstPerBlock && Arch == other.Arch && MultiBlock == other.MultiBlock &&
+           HardwareTSOEnabled == other.HardwareTSOEnabled && TSOEnabled == other.TSOEnabled && ABILocalFlags == other.ABILocalFlags &&
+           ParanoidTSO == other.ParanoidTSO && Is64BitMode == other.Is64BitMode && SMCChecks == other.SMCChecks &&
+           x87ReducedPrecision == other.x87ReducedPrecision;
+  }
+  static uint64_t GetHash(const CodeObjectSerializationConfig& other) {
+    // For < 64-bits of data just pack directly
+    // Skip the cookie
+    uint64_t Hash {};
+    Hash <<= 32;
+    Hash |= other.MaxInstPerBlock;
+    Hash <<= 1;
+    Hash |= other.Arch;
+    Hash <<= 1;
+    Hash |= other.MultiBlock;
+    Hash <<= 1;
+    Hash |= other.HardwareTSOEnabled;
+    Hash <<= 1;
+    Hash |= other.TSOEnabled;
+    Hash <<= 1;
+    Hash |= other.ABILocalFlags;
+    Hash <<= 1;
+    Hash |= other.ParanoidTSO;
+    Hash <<= 1;
+    Hash |= other.Is64BitMode;
+    Hash <<= 2;
+    Hash |= other.SMCChecks;
+    Hash <<= 1;
+    Hash |= other.x87ReducedPrecision;
+    return Hash;
+  }
+};
+
+static_assert(sizeof(CodeObjectSerializationConfig) == 16, "Size changed");
+static_assert((sizeof(CodeObjectSerializationConfig) - sizeof(uint64_t)) == 8, "Config size exceeded 64its. Need to change how the hash is "
+                                                                               "generated!");
+} // namespace FEXCore::CodeSerialize
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: MIT
+#include "Interface/Core/ObjectCache/ObjectCacheService.h"
+
+#include <FEXCore/Config/Config.h>
+#include <FEXCore/fextl/memory.h>
+#include <FEXCore/fextl/string.h>
+#include <FEXHeaderUtils/Filesystem.h>
+
+#include <fcntl.h>
+#include <xxhash.h>
+
+namespace FEXCore::CodeSerialize {
+void AsyncJobHandler::AsyncAddNamedRegionJob(uintptr_t Base, uintptr_t Size, uintptr_t Offset, const fextl::string& filename) {
+#ifndef _WIN32
+  // This function adds a named region *JOB* to our named region handler
+  // This needs to be as fast as possible to keep out of the way of the JIT
+
+  const fextl::string BaseFilename = FHU::Filesystem::GetFilename(filename);
+
+  if (!BaseFilename.empty()) {
+    // Create a new entry that once set up will be put in to our section object map
+    auto Entry = fextl::make_unique<CodeRegionEntry>(Base, Size, Offset, filename, NamedRegionHandler->DefaultCodeHeader(Base, Offset));
+
+    // Lock the job ref counter so we can block anything attempting to use the entry before it is loaded
+    Entry->NamedJobRefCountMutex.lock();
+
+    CodeRegionMapType::iterator EntryIterator;
+    {
+      std::unique_lock lk {CodeObjectCacheService->GetEntryMapMutex()};
+
+      auto& EntryMap = CodeObjectCacheService->GetEntryMap();
+
+      auto it = EntryMap.emplace(Base, std::move(Entry));
+      if (!it.second) {
+        // This happens when an application overwrites a previous region without unmapping what was there
+
+        // Lock this entry's Named job reference counter.
+        // Once this passes then we know that this section has been loaded.
+        it.first->second->NamedJobRefCountMutex.lock();
+
+        // Finalize anything the region needs to do first.
+        CodeObjectCacheService->DoCodeRegionClosure(it.first->second->Base, it.first->second.get());
+
+        // munmap the file that was mapped
+        FEXCore::Allocator::munmap(it.first->second->CodeData, it.first->second->FileSize);
+
+        // Remove this entry from the unrelocated map as well
+        {
+          std::unique_lock lk2 {CodeObjectCacheService->GetUnrelocatedEntryMapMutex()};
+          CodeObjectCacheService->GetUnrelocatedEntryMap().erase(it.first->second->EntryHeader.OriginalBase);
+        }
+
+        // Now overwrite the entry in the map
+        it = EntryMap.insert_or_assign(Base, std::move(Entry));
+        EntryIterator = it.first;
+      } else {
+        // No overwrite, just insert
+        EntryIterator = it.first;
+      }
+    }
+
+    // Now that this entry has been added to the map, we can insert a load job using the entry iterator.
+    // This allows us to quickly unblock the JIT thread when it is loading multiple regions and have the async thread
+    // do the loading for us.
+    //
+    // Create the async work queue job now so it can load
+    NamedRegionHandler->AsyncAddNamedRegionWorkItem(BaseFilename, filename, true, EntryIterator);
+
+    // Tell the async thread that it has work to do
+    CodeObjectCacheService->NotifyWork();
+  }
+#endif
+}
+
+void AsyncJobHandler::AsyncRemoveNamedRegionJob(uintptr_t Base, uintptr_t Size) {
+#ifndef _WIN32
+  // Removing a named region through the job system
+  // We need to find the entry that we are deleting first
+  fextl::unique_ptr<CodeRegionEntry> EntryPointer;
+  {
+    std::unique_lock lk {CodeObjectCacheService->GetEntryMapMutex()};
+
+    auto& EntryMap = CodeObjectCacheService->GetEntryMap();
+    auto it = EntryMap.find(Base);
+    if (it != EntryMap.end()) {
+      // Lock the job ref counter since we are erasing it
+      // Once this passes it will have been loaded
+      it->second->NamedJobRefCountMutex.lock();
+
+      // Take the pointer from the map
+      EntryPointer = std::move(it->second);
+
+      // We can now unmap the file data
+      FEXCore::Allocator::munmap(EntryPointer->CodeData, EntryPointer->FileSize);
+
+      // Remove this from the entry map
+      EntryMap.erase(it);
+
+      // Remove this entry from the unrelocated map as well
+      {
+        std::unique_lock lk2 {CodeObjectCacheService->GetUnrelocatedEntryMapMutex()};
+        CodeObjectCacheService->GetUnrelocatedEntryMap().erase(EntryPointer->EntryHeader.OriginalBase);
+      }
+    } else {
+      // Tried to remove something that wasn't in our code object tracking
+      return;
+    }
+
+    // Create the async work queue job now so it can finalize what it needs to do
+    NamedRegionHandler->AsyncRemoveNamedRegionWorkItem(Base, Size, std::move(EntryPointer));
+
+    // Tell the async thread that it has work to do
+    CodeObjectCacheService->NotifyWork();
+  }
+#endif
+}
+
+void AsyncJobHandler::AsyncAddSerializationJob(fextl::unique_ptr<SerializationJobData> Data) {
+  // XXX: Actually add serialization job
+}
+} // namespace FEXCore::CodeSerialize
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: MIT
+#include "Interface/Core/ObjectCache/ObjectCacheService.h"
+
+#include <FEXCore/fextl/memory.h>
+#include <FEXCore/fextl/string.h>
+
+namespace FEXCore::CodeSerialize {
+NamedRegionObjectHandler::NamedRegionObjectHandler(FEXCore::Context::ContextImpl* ctx) {
+  DefaultSerializationConfig.Cookie = CODE_COOKIE;
+
+  // Initialize the Arch from CPUID
+  uint32_t Arch = ctx->CPUID.RunFunction(0x4000'0001, 0).eax & 0xF;
+  DefaultSerializationConfig.Arch = Arch;
+
+  DefaultSerializationConfig.MaxInstPerBlock = ctx->Config.MaxInstPerBlock;
+  DefaultSerializationConfig.MultiBlock = ctx->Config.Multiblock;
+  DefaultSerializationConfig.TSOEnabled = ctx->Config.TSOEnabled;
+  DefaultSerializationConfig.ABILocalFlags = ctx->Config.ABILocalFlags;
+  DefaultSerializationConfig.ParanoidTSO = ctx->Config.ParanoidTSO;
+  DefaultSerializationConfig.Is64BitMode = ctx->Config.Is64BitMode;
+  DefaultSerializationConfig.SMCChecks = ctx->Config.SMCChecks;
+  DefaultSerializationConfig.x87ReducedPrecision = ctx->Config.x87ReducedPrecision;
+}
+
+void NamedRegionObjectHandler::AddNamedRegionObject(CodeRegionMapType::iterator Entry, const fextl::string& base_filename,
+                                                    const fextl::string& filename, bool Executable) {
+  // XXX: Add named region objects
+
+  // XXX: Until entry loading is complete just claim it is loaded
+  Entry->second->NamedJobRefCountMutex.unlock();
+}
+
+void NamedRegionObjectHandler::RemoveNamedRegionObject(uintptr_t Base, uintptr_t Size, fextl::unique_ptr<CodeRegionEntry> Entry) {
+  // XXX: Remove named region objects
+
+  // XXX: Until entry loading is complete just claim it is loaded
+  Entry->NamedJobRefCountMutex.unlock();
+}
+
+void NamedRegionObjectHandler::HandleNamedRegionObjectJobs() {
+  // Walk through all of our jobs sequentially until the work queue is empty
+  while (NamedWorkQueueJobs.load()) {
+    fextl::unique_ptr<AsyncJobHandler::NamedRegionWorkItem> WorkItem;
+
+    {
+      // Lock the work queue mutex for a short moment and grab an item from the list
+      std::unique_lock lk {NamedWorkQueueMutex};
+      size_t WorkItems = WorkQueue.size();
+      if (WorkItems != 0) {
+        WorkItem = std::move(WorkQueue.front());
+        WorkQueue.pop();
+      }
+
+      // Atomically update the number of jobs
+      --NamedWorkQueueJobs;
+    }
+
+    if (WorkItem) {
+      if (WorkItem->GetType() == AsyncJobHandler::NamedRegionJobType::JOB_ADD_NAMED_REGION) {
+        auto WorkAdd = static_cast<AsyncJobHandler::WorkItemAddNamedRegion*>(WorkItem.get());
+        AddNamedRegionObject(WorkAdd->Entry, WorkAdd->BaseFilename, WorkAdd->Filename, WorkAdd->Executable);
+      }
+
+      if (WorkItem->GetType() == AsyncJobHandler::NamedRegionJobType::JOB_REMOVE_NAMED_REGION) {
+        auto WorkRemove = static_cast<AsyncJobHandler::WorkItemRemoveNamedRegion*>(WorkItem.get());
+        RemoveNamedRegionObject(WorkRemove->Base, WorkRemove->Size, std::move(WorkRemove->Entry));
+      }
+    }
+  }
+}
+} // namespace FEXCore::CodeSerialize
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: MIT
+#include "Interface/Core/ObjectCache/ObjectCacheService.h"
+
+#include <FEXCore/Config/Config.h>
+#include <FEXCore/fextl/memory.h>
+#include <FEXCore/Utils/Threads.h>
+
+namespace {
+static void* ThreadHandler(void* Arg) {
+  FEXCore::CodeSerialize::CodeObjectSerializeService* This = reinterpret_cast<FEXCore::CodeSerialize::CodeObjectSerializeService*>(Arg);
+  This->ExecutionThread();
+  return nullptr;
+}
+} // namespace
+
+namespace FEXCore::CodeSerialize {
+CodeObjectSerializeService::CodeObjectSerializeService(FEXCore::Context::ContextImpl* ctx)
+  : CTX {ctx}
+  , AsyncHandler {&NamedRegionHandler, this}
+  , NamedRegionHandler {ctx} {
+  Initialize();
+}
+
+void CodeObjectSerializeService::Shutdown() {
+  if (CTX->Config.CacheObjectCodeCompilation() == FEXCore::Config::ConfigObjectCodeHandler::CONFIG_NONE) {
+    return;
+  }
+
+  WorkerThreadShuttingDown = true;
+
+  // Kick the working thread
+  WorkAvailable.NotifyAll();
+
+  if (WorkerThread->joinable()) {
+    // Wait for worker thread to close down
+    WorkerThread->join(nullptr);
+  }
+}
+
+void CodeObjectSerializeService::Initialize() {
+  // Add a canary so we don't crash on empty map iterator handling
+  auto it = AddressToEntryMap.insert_or_assign(~0ULL, fextl::make_unique<CodeRegionEntry>());
+  UnrelocatedAddressToEntryMap.insert_or_assign(~0ULL, it.first->second.get());
+
+  uint64_t OldMask = FEXCore::Threads::SetSignalMask(~0ULL);
+  WorkerThread = FEXCore::Threads::Thread::Create(ThreadHandler, this);
+  FEXCore::Threads::SetSignalMask(OldMask);
+}
+
+void CodeObjectSerializeService::DoCodeRegionClosure(uint64_t Base, CodeRegionEntry* it) {
+  if (Base == ~0ULL) {
+    // Don't do closure on canary
+    return;
+  }
+  // XXX: Do code region closure
+}
+
+const CodeObjectFileSection* CodeObjectSerializeService::FetchCodeObjectFromCache(uint64_t GuestRIP) {
+  // XXX: Actually fetch code objects from cache
+  return nullptr;
+}
+
+void CodeObjectSerializeService::ExecutionThread() {
+  // Set our thread name so we can see its relation
+  FEXCore::Threads::SetThreadName("ObjectCodeSeri\0");
+  while (WorkerThreadShuttingDown.load() != true) {
+    // Wait for work
+    WorkAvailable.Wait();
+
+    // Handle named region async jobs first. Highest priority
+    NamedRegionHandler.HandleNamedRegionObjectJobs();
+
+    // XXX: Handle code serialization jobs second.
+  }
+
+  // Do final code region closures on thread shutdown
+  for (auto& it : AddressToEntryMap) {
+    DoCodeRegionClosure(it.first, it.second.get());
+  }
+
+  // Safely clear our maps now
+  AddressToEntryMap.clear();
+  UnrelocatedAddressToEntryMap.clear();
+}
+} // namespace FEXCore::CodeSerialize
@@ -0,0 +1,457 @@
+// SPDX-License-Identifier: MIT
+#pragma once
+#include "Interface/Context/Context.h"
+#include "Interface/Core/ObjectCache/Relocations.h"
+#include "Interface/Core/ObjectCache/CodeObjectSerializationConfig.h"
+#include "Interface/IR/AOTIR.h"
+
+#include <FEXCore/Utils/Event.h>
+#include <FEXCore/Utils/Threads.h>
+#include <FEXCore/fextl/map.h>
+#include <FEXCore/fextl/memory.h>
+#include <FEXCore/fextl/queue.h>
+#include <FEXCore/fextl/robin_map.h>
+#include <FEXCore/fextl/string.h>
+#include <FEXCore/fextl/vector.h>
+
+#include <shared_mutex>
+
+namespace FEXCore::CodeSerialize {
+// XXX: Does this need to be signal safe?
+using CodeSerializationMutex = std::shared_mutex;
+struct CodeSerializationData {};
+
+struct CodeObjectFileSection {
+  bool Serialized;
+  bool Invalid;
+  const CodeSerializationData* Data;
+  const char* HostCode;
+  uint64_t NumRelocations;
+  const char* Relocations;
+};
+
+/**
+ * @brief This is the file header that lives at the start of an object cache file
+ *
+ * This header is updated from multiple processes!
+ * Care must be taken to use OS locks when updating the file backing including this header
+ */
+struct CodeObjectSerializationHeader {
+  // The configuration that this file has
+  CodeObjectSerializationConfig Config;
+  // The original RIP that this object section was mapped at
+  uint64_t OriginalBase {};
+  // The original offset in to the file that this object section was loaded from
+  uint64_t OriginalOffset {};
+  // Total amount of code that should be in this file
+  uint64_t TotalCodeSize {};
+  // Used to reserve the TSL map
+  uint64_t NumCodeEntries {};
+  // The number of relocations that point to this section
+  uint64_t NumRelocationsTo {};
+  // Total relocations in this file
+  uint64_t TotalRelocationsCount {};
+};
+
+struct CodeRegionEntry {
+  /**
+   * @name Threaded initialization objects for the initial object creation
+   * @{ */
+  // Base address in memory where the code region is at
+  uint64_t Base {};
+
+  // Size of this code entry
+  uint64_t Size {};
+
+  // The offset inside the file that is mapped to Base
+  uint64_t Offset {};
+
+  // Filename of the object
+  fextl::string Filename {};
+
+  CodeObjectSerializationHeader EntryHeader {};
+  /**  @} */
+
+  // The filename of the object cache for this entry
+  fextl::string ObjectEntrySourceFilename {};
+
+  // In the case of file corruption that we can detect, we can disable serialization early for an entry
+  // We should be resiliant to corruption but things happen
+  bool StillSerializing {true};
+
+  // Long lived FD for serialization if we have multiple jobs to serialize
+  // Bursts of code entries are common and this reduces file lock overhead
+  //
+  // Especially useful over network mounts where file locks are very slow
+  int CurrentSerializedFD {-1};
+
+  /**
+   * @name Objects required to sync objects between threads
+   * @{ */
+  // Refcount for the number of outstanding code entries waiting to be written for this object section
+  CodeSerializationMutex ObjectJobRefCountMutex;
+
+  // Refcount for outstanding named object region entry loading itself
+  // Will block JIT code cache look up when this has a unique_lock held
+  CodeSerializationMutex NamedJobRefCountMutex;
+  /**  @} */
+
+  /**
+   * @name Object Entry data management
+   * @{ */
+
+  /**
+   * @name This is the raw file data that we loaded from the code region entry file
+   * @{ */
+  char* CodeData {};
+  size_t FileSize {};
+
+  fextl::vector<CodeObjectFileSection> FileCodeSections;
+  /**  @} */
+
+  // This per section map takes the most time to load and needs to be quick
+  // This is the map of all code segments for this entry
+  fextl::robin_map<uint64_t, CodeObjectFileSection*> SectionLookupMap {};
+  /**  @} */
+
+  // Default initialization
+  CodeRegionEntry() = default;
+
+  // Initializer specifically for threaded loading
+  CodeRegionEntry(uint64_t Base, uint64_t Size, uint64_t Offset, const fextl::string& Filename, const CodeObjectSerializationHeader& DefaultHeader)
+    : Base {Base}
+    , Size {Size}
+    , Offset {Offset}
+    , Filename {Filename}
+    , EntryHeader {DefaultHeader} {}
+};
+
+// Map type must use an interator that isn't invalidation on erase/insert
+using CodeRegionMapType = fextl::map<uint64_t, fextl::unique_ptr<CodeRegionEntry>>;
+using CodeRegionPtrMapType = fextl::map<uint64_t, CodeRegionEntry*>;
+
+class NamedRegionObjectHandler;
+class CodeObjectSerializeService;
+
+class AsyncJobHandler final {
+public:
+  /**
+   * @brief Structure containing all the data required to async serialize code objects
+   */
+  struct SerializationJobData {
+    uint64_t GuestRIP; ///< The RIP for the guest
+    // XXX: Support multiblock
+    uint64_t GuestCodeLength; ///< The Guest's code length
+    uint64_t GuestCodeHash;   ///< Hash of the guest code
+
+    void* HostCodeBegin;   ///< Host JIT code starting memory address
+    size_t HostCodeLength; ///< Host JIT code length
+    uint64_t HostCodeHash; ///< Host JIT code hash before any backpatching
+
+    // This is the thread specific ref counter for outstanding jobs.
+    // This shared mutex is incremented when the job is added, then decremented when the job is complete.
+    // If a thread is shutting down or clearing code cache then the thread will pull a unique lock on this mutex.
+    // This way it will wait until the async job handler is complete with it.
+    CodeSerializationMutex* ThreadJobRefCount;
+
+    // These are the reolocations for this serialization job
+    // Relatively small number of entries most of the time
+    fextl::vector<FEXCore::CPU::Relocation> Relocations;
+
+    /**
+     * @name Objects filled in from the Code Object Serialization service when a job is added
+     * @{ */
+    // This is the code region's ref counter for outstanding jobs.
+    // This shared mutex is incremented when the job is added, then decremented when the job is complete.
+    // If a named region is being removed then a unique lock will be pulled to wait for all jobs to complete and no new jobs to be added.
+    CodeSerializationMutex* ObjectJobRefCountMutexPtr;
+
+    // This is the code region iterator to reduce the number of map lookups
+    // This will remain valid while jobs are outstanding for this region
+    CodeRegionMapType::iterator CodeRegionIterator;
+    /**  @} */
+  };
+
+  AsyncJobHandler(NamedRegionObjectHandler* NamedRegionHandler, CodeObjectSerializeService* CodeObjectCacheService)
+    : NamedRegionHandler {NamedRegionHandler}
+    , CodeObjectCacheService {CodeObjectCacheService} {}
+
+protected:
+  friend class CodeObjectSerializeService;
+  friend class NamedRegionObjectHandler;
+  /**
+   * @name Async job submission functions
+   * @{ */
+  void AsyncAddNamedRegionJob(uintptr_t Base, uintptr_t Size, uintptr_t Offset, const fextl::string& filename);
+  void AsyncRemoveNamedRegionJob(uintptr_t Base, uintptr_t Size);
+  void AsyncAddSerializationJob(fextl::unique_ptr<SerializationJobData> Data);
+  /**  @} */
+
+  /**
+   * @name Async named region handling
+   * @{ */
+  /**
+   * @brief The async named region jobs to handle.
+   *
+   * Only two, Code serialization goes in to a different queue.
+   */
+  enum class NamedRegionJobType {
+    JOB_ADD_NAMED_REGION,
+    JOB_REMOVE_NAMED_REGION,
+  };
+
+  class NamedRegionWorkItem {
+  public:
+    NamedRegionJobType GetType() const {
+      return Type;
+    }
+
+  protected:
+    friend class WorkItemAddNamedRegion;
+    NamedRegionWorkItem(NamedRegionJobType type)
+      : Type {type} {}
+
+  private:
+    NamedRegionJobType Type;
+  };
+
+  class WorkItemAddNamedRegion : public NamedRegionWorkItem {
+  public:
+    WorkItemAddNamedRegion(const fextl::string& base, const fextl::string& filename, bool executable, CodeRegionMapType::iterator entry)
+      : NamedRegionWorkItem {NamedRegionJobType::JOB_ADD_NAMED_REGION}
+      , BaseFilename {base}
+      , Filename {filename}
+      , Executable {executable}
+      , Entry {entry} {}
+    const fextl::string BaseFilename;
+    const fextl::string Filename;
+    bool Executable;
+    CodeRegionMapType::iterator Entry;
+  };
+
+  class WorkItemRemoveNamedRegion : public NamedRegionWorkItem {
+  public:
+    WorkItemRemoveNamedRegion(uint64_t base, uint64_t size, fextl::unique_ptr<CodeRegionEntry> entry)
+      : NamedRegionWorkItem {NamedRegionJobType::JOB_REMOVE_NAMED_REGION}
+      , Base {base}
+      , Size {size}
+      , Entry {std::move(entry)} {}
+
+    uint64_t Base;
+    uint64_t Size;
+    fextl::unique_ptr<CodeRegionEntry> Entry;
+  };
+  /**  @} */
+
+private:
+  NamedRegionObjectHandler* NamedRegionHandler;
+  CodeObjectSerializeService* CodeObjectCacheService;
+};
+
+class NamedRegionObjectHandler final {
+public:
+  NamedRegionObjectHandler(FEXCore::Context::ContextImpl* ctx);
+
+  void HandleNamedRegionObjectJobs();
+
+  const CodeObjectSerializationConfig& GetDefaultSerializationConfig() const {
+    return DefaultSerializationConfig;
+  }
+
+protected:
+  friend class AsyncJobHandler;
+
+  // Return a default code header based off the default serialization config
+  CodeObjectSerializationHeader DefaultCodeHeader(uint64_t Base, uint64_t Offset) const {
+    return CodeObjectSerializationHeader {
+      .Config = DefaultSerializationConfig,
+      .OriginalBase = Base,
+      .OriginalOffset = Offset,
+      .NumCodeEntries = 0,
+      .NumRelocationsTo = 0,
+      .TotalRelocationsCount = 0,
+    };
+  }
+
+  /**
+   * @brief Adds an asynchronous add named region work item to the object queue
+   *
+   * This adds the job that will do the loading of file resources and data tracking.
+   */
+  void AsyncAddNamedRegionWorkItem(const fextl::string& base, const fextl::string& filename, bool executable, CodeRegionMapType::iterator entry) {
+    std::unique_lock lk {NamedWorkQueueMutex};
+    WorkQueue.emplace(fextl::make_unique<AsyncJobHandler::WorkItemAddNamedRegion>(base, filename, executable, entry));
+    ++NamedWorkQueueJobs;
+  }
+
+  void AsyncRemoveNamedRegionWorkItem(uint64_t Base, uint64_t Size, fextl::unique_ptr<CodeRegionEntry> Entry) {
+    std::unique_lock lk {NamedWorkQueueMutex};
+    WorkQueue.emplace(fextl::make_unique<AsyncJobHandler::WorkItemRemoveNamedRegion>(Base, Size, std::move(Entry)));
+    ++NamedWorkQueueJobs;
+  }
+
+private:
+  // Code version. If the code emission changes then this needs to increment
+  constexpr static uint32_t CODE_VERSION = 0x0;
+
+  // Default cookie header for the file header
+  constexpr static uint64_t CODE_COOKIE = FEXCore::IR::COOKIE_VERSION("FEXC", CODE_VERSION);
+
+  // Code serialization config for our current process configuration
+  CodeObjectSerializationConfig DefaultSerializationConfig;
+
+  // Atomic counter for number of jobs in the queue without needing to pull the mutex to check
+  std::atomic<uint64_t> NamedWorkQueueJobs {};
+
+  // Mutex for ading new jobs to the work queue
+  std::mutex NamedWorkQueueMutex {};
+
+  // The job queue itself
+  // Jobs get consumed as a FIFO
+  // Jobs always get appended to the end
+  fextl::queue<fextl::unique_ptr<AsyncJobHandler::NamedRegionWorkItem>> WorkQueue {};
+
+  /**
+   * @name Named Region object handling
+   * @{ */
+  void AddNamedRegionObject(CodeRegionMapType::iterator Entry, const fextl::string& base_filename, const fextl::string& filename, bool Executable);
+  void RemoveNamedRegionObject(uintptr_t Base, uintptr_t Size, fextl::unique_ptr<CodeRegionEntry> Entry);
+  /**  @} */
+};
+
+/**
+ * @brief Context specific code object serialization class
+ *
+ * Contains everything required for FEXCore to serialize code objects
+ */
+class CodeObjectSerializeService final {
+public:
+  CodeObjectSerializeService(FEXCore::Context::ContextImpl* ctx);
+
+  /**
+   * @brief Initialize the internal interface
+   *
+   * Is a public interface to allow the service to reinitialize after forking
+   */
+  void Initialize();
+
+  /**
+   * @brief Safely shut down the Code Object serialization service.
+   *
+   * This service needs to be resiliant to application crashes, but shutting down safely is still preferred.
+   */
+  void Shutdown();
+
+  /**
+   * @name Async interface
+   * @{ */
+  /**
+   * @brief Loads a named region in to the code serialization service. As async as possible.
+   *
+   * @param Base - Virtual address that this named region is loaded
+   * @param Size - The size of the region
+   * @param Offset - The offset from the file
+   * @param filename - The filename itself
+   */
+  void AsyncAddNamedRegionJob(uintptr_t Base, uintptr_t Size, uintptr_t Offset, const fextl::string& filename) {
+    AsyncHandler.AsyncAddNamedRegionJob(Base, Size, Offset, filename);
+  }
+
+  /**
+   * @brief Unloads a named region from the code serialization service. As async as possible.
+   *
+   * @param Base - Virtual address of the named region
+   * @param Size - The size of the region
+   */
+  void AsyncRemoveNamedRegionJob(uintptr_t Base, uintptr_t Size) {
+    AsyncHandler.AsyncRemoveNamedRegionJob(Base, Size);
+  }
+
+  /**
+   * @brief Adds a code object serialization job. As async as possible.
+   * Code hashing happens prior to async job serialization to catch invalidations due to backpatching.
+   *
+   * @param Data - A fully filled out struct containing all the code serialization
+   */
+  void AsyncAddSerializationJob(fextl::unique_ptr<AsyncJobHandler::SerializationJobData> Data) {
+    AsyncHandler.AsyncAddSerializationJob(std::move(Data));
+  }
+  /**  @} */
+
+  /**
+   * @name Synchronous interface
+   * @{ */
+  /**
+   * @brief Synchronously waits for this thread's job queue to become empty.
+   *
+   * This is necessary for when a thread is shutting down
+   *
+   * @param ThreadJobRefCount - The shared mutex to wait on until to be empty
+   */
+  static void WaitForEmptyJobQueue(CodeSerializationMutex* ThreadJobRefCount) {
+    // Once the shared mutex is empty this unique lock will be gained
+    std::unique_lock lk {*ThreadJobRefCount};
+  }
+
+  /**
+   * @brief Fetches object code from the Code Object Cache for JIT.
+   *
+   * @param GuestRIP - Which GuestRIP to search the cache for
+   *
+   * @return Data required for the JIT to relocate the Object code.
+   */
+  const CodeObjectFileSection* FetchCodeObjectFromCache(uint64_t GuestRIP);
+  /**  @} */
+
+  // Public for threading
+  void ExecutionThread();
+
+protected:
+  friend class AsyncJobHandler;
+
+  /**
+   * @brief Safely closes out code object regions from the map
+   *
+   * @param it - iterator to do a closure on
+   */
+  void DoCodeRegionClosure(uint64_t Base, CodeRegionEntry* it);
+
+  CodeSerializationMutex& GetEntryMapMutex() {
+    return EntryMapMutex;
+  }
+  CodeSerializationMutex& GetUnrelocatedEntryMapMutex() {
+    return EntryMapMutex;
+  }
+
+  CodeRegionMapType& GetEntryMap() {
+    return AddressToEntryMap;
+  }
+  CodeRegionPtrMapType& GetUnrelocatedEntryMap() {
+    return UnrelocatedAddressToEntryMap;
+  }
+
+  /**
+   * @brief Notify the async thread that it has work to do
+   */
+  void NotifyWork() {
+    WorkAvailable.NotifyOne();
+  }
+
+private:
+  FEXCore::Context::ContextImpl* CTX;
+
+  Event WorkAvailable {};
+  fextl::unique_ptr<FEXCore::Threads::Thread> WorkerThread;
+  std::atomic_bool WorkerThreadShuttingDown {false};
+  AsyncJobHandler AsyncHandler;
+  NamedRegionObjectHandler NamedRegionHandler;
+
+  // Mutex to hold when modifying the entry maps
+  CodeSerializationMutex EntryMapMutex;
+  CodeSerializationMutex UnrelocatedEntryMapMutex;
+
+  // Entry maps
+  CodeRegionMapType AddressToEntryMap;
+  CodeRegionPtrMapType UnrelocatedAddressToEntryMap;
+};
+} // namespace FEXCore::CodeSerialize
@@ -53,11 +53,10 @@ constexpr inline DispatchTableEntry OpDispatch_BaseOpTable[] = {
  {0xAA, 2, &OpDispatchBuilder::STOSOp},
  {0xAC, 2, &OpDispatchBuilder::LODSOp},
  {0xAE, 2, &OpDispatchBuilder::SCASOp},
-  {0xB0, 16, &OpDispatchBuilder::Bind<&OpDispatchBuilder::MOVGPRImmediate>},
+  {0xB0, 16, &OpDispatchBuilder::Bind<&OpDispatchBuilder::MOVGPROp, 0>},
  {0xC2, 2, &OpDispatchBuilder::RETOp},
  {0xC8, 1, &OpDispatchBuilder::EnterOp},
  {0xC9, 1, &OpDispatchBuilder::LEAVEOp},
-  {0xCA, 2, &OpDispatchBuilder::RETFARIndirectOp},
  {0xCC, 2, &OpDispatchBuilder::INTOp},
  {0xCF, 1, &OpDispatchBuilder::IRETOp},
  {0xD7, 2, &OpDispatchBuilder::XLATOp},
@@ -76,4 +75,33 @@ constexpr inline DispatchTableEntry OpDispatch_BaseOpTable[] = {
  {0xFA, 2, &OpDispatchBuilder::PermissionRestrictedOp},
  {0xFC, 2, &OpDispatchBuilder::FLAGControlOp},
 };
+
+constexpr inline DispatchTableEntry OpDispatch_BaseOpTable_64[] = {
+  {0x63, 1, &OpDispatchBuilder::MOVSXDOp},
+  {0xA0, 4, &OpDispatchBuilder::MOVOffsetOp},
+};
+
+constexpr inline DispatchTableEntry OpDispatch_BaseOpTable_32[] = {
+  {0x06, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_ES_PREFIX>},
+  {0x07, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_ES_PREFIX>},
+  {0x0E, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_CS_PREFIX>},
+  {0x16, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_SS_PREFIX>},
+  {0x17, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_SS_PREFIX>},
+  {0x1E, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_DS_PREFIX>},
+  {0x1F, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_DS_PREFIX>},
+  {0x27, 1, &OpDispatchBuilder::DAAOp},
+  {0x2F, 1, &OpDispatchBuilder::DASOp},
+  {0x37, 1, &OpDispatchBuilder::AAAOp},
+  {0x3F, 1, &OpDispatchBuilder::AASOp},
+  {0x40, 8, &OpDispatchBuilder::INCOp},
+  {0x48, 8, &OpDispatchBuilder::DECOp},
+
+  {0x60, 1, &OpDispatchBuilder::PUSHAOp},
+  {0x61, 1, &OpDispatchBuilder::POPAOp},
+  {0xA0, 4, &OpDispatchBuilder::MOVOffsetOp},
+  {0xCE, 1, &OpDispatchBuilder::INTOp},
+  {0xD4, 1, &OpDispatchBuilder::AAMOp},
+  {0xD5, 1, &OpDispatchBuilder::AADOp},
+  {0xD6, 1, &OpDispatchBuilder::SALCOp},
+};
 } // namespace FEXCore::IR
@@ -19,12 +19,8 @@ class OrderedNode;
 #define OpcodeArgs [[maybe_unused]] FEXCore::X86Tables::DecodedOp Op

 void OpDispatchBuilder::SHA1NEXTEOp(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsSHA) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);

  // ARMv8 SHA1 extension provides a `SHA1H` instruction which does a fixed rotate by 30.
  // This only operates on element 0 rather than element 3. We don't have the luxury of rewriting the x86 SHA algorithm to take advantage of this.
@@ -36,32 +32,24 @@ void OpDispatchBuilder::SHA1NEXTEOp(OpcodeArgs) {
  auto Tmp = _VAdd(OpSize::i128Bit, OpSize::i32Bit, Src, RotatedNode);
  auto Result = _VInsElement(OpSize::i128Bit, OpSize::i32Bit, 3, 3, Src, Tmp);

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::SHA1MSG1Op(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsSHA) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);

  Ref NewVec = _VExtr(OpSize::i128Bit, OpSize::i64Bit, Dest, Src, 1);

  // [W0, W1, W2, W3] ^ [W2, W3, W4, W5]
  Ref Result = _VXor(OpSize::i128Bit, OpSize::i8Bit, Dest, NewVec);

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::SHA1MSG2Op(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsSHA) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);

  // ARM SHA1 mostly matches x86 semantics, except the input and outputs are both flipped from elements 0,1,2,3 to 3,2,1,0.
  auto Src1 = SHADataShuffle(Dest);
@@ -70,17 +58,13 @@ void OpDispatchBuilder::SHA1MSG2Op(OpcodeArgs) {
  // The result is swizzled differently than expected
  auto Result = SHADataShuffle(_VSha1SU1(Src1, Src2));

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::SHA1RNDS4Op(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsSHA) {
-    UnimplementedOp(Op);
-    return;
-  }
  const uint64_t Imm8 = Op->Src[1].Literal() & 0b11;
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);

  Ref Result {};
  Ref ConstantVector {};
@@ -112,29 +96,21 @@ void OpDispatchBuilder::SHA1RNDS4Op(OpcodeArgs) {
  case 3: Result = SHADataShuffle(_VSha1P(Src1, ZeroRegister, Src2)); break;
  }

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::SHA256MSG1Op(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsSHA) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);

  auto Result = _VSha256U0(Dest, Src);

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::SHA256MSG2Op(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsSHA) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);

  auto Src1 = _VExtr(OpSize::i128Bit, OpSize::i32Bit, Dest, Dest, 3);
  auto DupDst = _VDupElement(OpSize::i128Bit, OpSize::i32Bit, Dest, 3);
@@ -142,16 +118,22 @@ void OpDispatchBuilder::SHA256MSG2Op(OpcodeArgs) {

  auto Result = _VSha256U1(Src1, Src2);

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
+}
+
+Ref OpDispatchBuilder::BitwiseAtLeastTwo(Ref A, Ref B, Ref C) {
+  // Returns whether at least 2/3 of A/B/C is true.
+  // Expressed as (A & (B | C)) | (B & C)
+  //
+  // Equivalent to expression in SHA calculations: (A & B) ^ (A & C) ^ (B & C)
+  auto And = _And(OpSize::i32Bit, B, C);
+  auto Or = _Or(OpSize::i32Bit, B, C);
+  return _Or(OpSize::i32Bit, _And(OpSize::i32Bit, A, Or), And);
 }

 void OpDispatchBuilder::SHA256RNDS2Op(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsSHA) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  // Hardcoded to XMM0
  auto XMM0 = LoadXMMRegister(0);

@@ -177,121 +159,101 @@ void OpDispatchBuilder::SHA256RNDS2Op(OpcodeArgs) {
  auto B = _VSha256H2(EFGH, ABCD, Key);
  auto Result = shuffle_abcd(A, B);

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::AESImcOp(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsAES) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  Ref Result = _VAESImc(Src);
-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::AESEncOp(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsAES) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  Ref Result = _VAESEnc(OpSize::i128Bit, Dest, Src, LoadZeroVector(OpSize::i128Bit));
-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::VAESEncOp(OpcodeArgs) {
  const auto DstSize = OpSizeFromDst(Op);
-  const auto Is128Bit = DstSize == OpSize::i128Bit;
+  [[maybe_unused]] const auto Is128Bit = DstSize == OpSize::i128Bit;

  // TODO: Handle 256-bit VAESENC.
  LOGMAN_THROW_A_FMT(Is128Bit, "256-bit VAESENC unimplemented");

-  Ref State = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
-  Ref Key = LoadSourceFPR(Op, Op->Src[1], Op->Flags);
+  Ref State = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
+  Ref Key = LoadSource(FPRClass, Op, Op->Src[1], Op->Flags);
  Ref Result = _VAESEnc(DstSize, State, Key, LoadZeroVector(DstSize));

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::AESEncLastOp(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsAES) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  Ref Result = _VAESEncLast(OpSize::i128Bit, Dest, Src, LoadZeroVector(OpSize::i128Bit));
-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::VAESEncLastOp(OpcodeArgs) {
  const auto DstSize = OpSizeFromDst(Op);
-  const auto Is128Bit = DstSize == OpSize::i128Bit;
+  [[maybe_unused]] const auto Is128Bit = DstSize == OpSize::i128Bit;

  // TODO: Handle 256-bit VAESENCLAST.
  LOGMAN_THROW_A_FMT(Is128Bit, "256-bit VAESENCLAST unimplemented");

-  Ref State = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
-  Ref Key = LoadSourceFPR(Op, Op->Src[1], Op->Flags);
+  Ref State = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
+  Ref Key = LoadSource(FPRClass, Op, Op->Src[1], Op->Flags);
  Ref Result = _VAESEncLast(DstSize, State, Key, LoadZeroVector(DstSize));

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::AESDecOp(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsAES) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  Ref Result = _VAESDec(OpSize::i128Bit, Dest, Src, LoadZeroVector(OpSize::i128Bit));
-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::VAESDecOp(OpcodeArgs) {
  const auto DstSize = OpSizeFromDst(Op);
-  const auto Is128Bit = DstSize == OpSize::i128Bit;
+  [[maybe_unused]] const auto Is128Bit = DstSize == OpSize::i128Bit;

  // TODO: Handle 256-bit VAESDEC.
  LOGMAN_THROW_A_FMT(Is128Bit, "256-bit VAESDEC unimplemented");

-  Ref State = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
-  Ref Key = LoadSourceFPR(Op, Op->Src[1], Op->Flags);
+  Ref State = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
+  Ref Key = LoadSource(FPRClass, Op, Op->Src[1], Op->Flags);
  Ref Result = _VAESDec(DstSize, State, Key, LoadZeroVector(DstSize));

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::AESDecLastOp(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsAES) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  Ref Result = _VAESDecLast(OpSize::i128Bit, Dest, Src, LoadZeroVector(OpSize::i128Bit));
-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::VAESDecLastOp(OpcodeArgs) {
  const auto DstSize = OpSizeFromDst(Op);
-  const auto Is128Bit = DstSize == OpSize::i128Bit;
+  [[maybe_unused]] const auto Is128Bit = DstSize == OpSize::i128Bit;

  // TODO: Handle 256-bit VAESDECLAST.
  LOGMAN_THROW_A_FMT(Is128Bit, "256-bit VAESDECLAST unimplemented");

-  Ref State = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
-  Ref Key = LoadSourceFPR(Op, Op->Src[1], Op->Flags);
+  Ref State = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
+  Ref Key = LoadSource(FPRClass, Op, Op->Src[1], Op->Flags);
  Ref Result = _VAESDecLast(DstSize, State, Key, LoadZeroVector(DstSize));

-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 Ref OpDispatchBuilder::AESKeyGenAssistImpl(OpcodeArgs) {
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  const uint64_t RCON = Op->Src[1].Literal();

  auto KeyGenSwizzle = LoadAndCacheNamedVectorConstant(OpSize::i128Bit, NAMED_VECTOR_AESKEYGENASSIST_SWIZZLE);
@@ -299,41 +261,28 @@ Ref OpDispatchBuilder::AESKeyGenAssistImpl(OpcodeArgs) {
 }

 void OpDispatchBuilder::AESKeyGenAssist(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsAES) {
-    UnimplementedOp(Op);
-    return;
-  }
-
  Ref Result = AESKeyGenAssistImpl(Op);
-  StoreResultFPR(Op, Result);
+  StoreResult(FPRClass, Op, Result, OpSize::iInvalid);
 }

 void OpDispatchBuilder::PCLMULQDQOp(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsPMULL_128Bit) {
-    UnimplementedOp(Op);
-    return;
-  }
-  Ref Dest = LoadSourceFPR(Op, Op->Dest, Op->Flags);
-  Ref Src = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+  Ref Dest = LoadSource(FPRClass, Op, Op->Dest, Op->Flags);
+  Ref Src = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  const auto Selector = static_cast<uint8_t>(Op->Src[1].Literal());

  auto Res = _PCLMUL(OpSize::i128Bit, Dest, Src, Selector & 0b1'0001);
-  StoreResultFPR(Op, Res);
+  StoreResult(FPRClass, Op, Res, OpSize::iInvalid);
 }

 void OpDispatchBuilder::VPCLMULQDQOp(OpcodeArgs) {
-  if (!CTX->HostFeatures.SupportsPMULL_128Bit) {
-    UnimplementedOp(Op);
-    return;
-  }
  const auto DstSize = OpSizeFromDst(Op);

-  Ref Src1 = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
-  Ref Src2 = LoadSourceFPR(Op, Op->Src[1], Op->Flags);
+  Ref Src1 = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
+  Ref Src2 = LoadSource(FPRClass, Op, Op->Src[1], Op->Flags);
  const auto Selector = static_cast<uint8_t>(Op->Src[2].Literal());

  Ref Res = _PCLMUL(DstSize, Src1, Src2, Selector & 0b1'0001);
-  StoreResultFPR(Op, Res);
+  StoreResult(FPRClass, Op, Res, OpSize::iInvalid);
 }

 } // namespace FEXCore::IR
@@ -201,7 +201,7 @@ void OpDispatchBuilder::FixupAF() {
  auto PFRaw = GetRFLAG(FEXCore::X86State::RFLAG_PF_RAW_LOC);
  auto AFRaw = GetRFLAG(FEXCore::X86State::RFLAG_AF_RAW_LOC);

-  // Again 64-bit as masking is more expensive.
+  // Again 64-bit as masking is more expensive given our ConstProp design.
  Ref XorRes = _Xor(OpSize::i64Bit, AFRaw, PFRaw);
  SetRFLAG<FEXCore::X86State::RFLAG_AF_RAW_LOC>(XorRes);
 }
@@ -263,10 +263,12 @@ void OpDispatchBuilder::CalculateDeferredFlags() {
 Ref OpDispatchBuilder::IncrementByCarry(OpSize OpSize, Ref Src) {
  // If CF not inverted, we use .cc since the increment happens when the
  // condition is false. If CF inverted, invert to use .cs. A bit mindbendy.
-  return _NZCVSelectIncrement(OpSize, CFInverted ? CondClass::UGE : CondClass::ULT, Src, Src);
+  return _NZCVSelectIncrement(OpSize, {CFInverted ? COND_UGE : COND_ULT}, Src, Src);
 }

 Ref OpDispatchBuilder::CalculateFlags_ADC(IR::OpSize SrcSize, Ref Src1, Ref Src2) {
+  auto Zero = _InlineConstant(0);
+  auto One = _InlineConstant(1);
  auto OpSize = SrcSize == OpSize::i64Bit ? OpSize::i64Bit : OpSize::i32Bit;
  Ref Res;

@@ -286,11 +288,11 @@ Ref OpDispatchBuilder::CalculateFlags_ADC(IR::OpSize SrcSize, Ref Src1, Ref Src2
    Ref Src2PlusCF = IncrementByCarry(OpSize, Src2);

    // Need to zero-extend for the comparison.
-    Res = Add(OpSize, Src1, Src2PlusCF);
+    Res = _Add(OpSize, Src1, Src2PlusCF);
    Res = _Bfe(OpSize, IR::OpSizeAsBits(SrcSize), 0, Res);

    // TODO: We can fold that second Bfe in (cmp uxth).
-    auto SelectCFInv = Select01(OpSize, CondClass::UGE, Res, Src2PlusCF);
+    auto SelectCFInv = _Select(FEXCore::IR::COND_UGE, Res, Src2PlusCF, One, Zero);

    SetNZ_ZeroCV(SrcSize, Res);
    SetCFInverted(SelectCFInv);
@@ -302,6 +304,8 @@ Ref OpDispatchBuilder::CalculateFlags_ADC(IR::OpSize SrcSize, Ref Src1, Ref Src2
 }

 Ref OpDispatchBuilder::CalculateFlags_SBB(IR::OpSize SrcSize, Ref Src1, Ref Src2) {
+  auto Zero = _InlineConstant(0);
+  auto One = _InlineConstant(1);
  auto OpSize = SrcSize == OpSize::i64Bit ? OpSize::i64Bit : OpSize::i32Bit;

  CalculateAF(Src1, Src2);
@@ -321,10 +325,10 @@ Ref OpDispatchBuilder::CalculateFlags_SBB(IR::OpSize SrcSize, Ref Src1, Ref Src2

    auto Src2PlusCF = IncrementByCarry(OpSize, Src2);

-    Res = Sub(OpSize, Src1, Src2PlusCF);
+    Res = _Sub(OpSize, Src1, Src2PlusCF);
    Res = _Bfe(OpSize, IR::OpSizeAsBits(SrcSize), 0, Res);

-    auto SelectCFInv = Select01(OpSize, CondClass::UGE, Src1, Src2PlusCF);
+    auto SelectCFInv = _Select(FEXCore::IR::COND_UGE, Src1, Src2PlusCF, One, Zero);

    SetNZ_ZeroCV(SrcSize, Res);
    SetCFInverted(SelectCFInv);
@@ -345,10 +349,10 @@ Ref OpDispatchBuilder::CalculateFlags_SUB(IR::OpSize SrcSize, Ref Src1, Ref Src2

  Ref Res;
  if (SrcSize >= OpSize::i32Bit) {
-    Res = SubWithFlags(SrcSize, Src1, Src2);
+    Res = _SubWithFlags(SrcSize, Src1, Src2);
  } else {
    _SubNZCV(SrcSize, Src1, Src2);
-    Res = Sub(OpSize::i32Bit, Src1, Src2);
+    Res = _Sub(OpSize::i32Bit, Src1, Src2);
  }

  CalculatePF(Res);
@@ -375,10 +379,10 @@ Ref OpDispatchBuilder::CalculateFlags_ADD(IR::OpSize SrcSize, Ref Src1, Ref Src2

  Ref Res;
  if (SrcSize >= OpSize::i32Bit) {
-    Res = AddWithFlags(SrcSize, Src1, Src2);
+    Res = _AddWithFlags(SrcSize, Src1, Src2);
  } else {
    _AddNZCV(SrcSize, Src1, Src2);
-    Res = Add(OpSize::i32Bit, Src1, Src2);
+    Res = _Add(OpSize::i32Bit, Src1, Src2);
  }

  CalculatePF(Res);
@@ -406,7 +410,7 @@ void OpDispatchBuilder::CalculateFlags_MUL(IR::OpSize SrcSize, Ref Res, Ref High
  // If High = SignBit, then sets to nZCv. Else sets to nzcV. Since SF/ZF
  // undefined, this does what we need after inverting carry.
  auto Zero = _InlineConstant(0);
-  _CondSubNZCV(OpSize::i64Bit, Zero, Zero, CondClass::EQ, 0x1 /* nzcV */);
+  _CondSubNZCV(OpSize::i64Bit, Zero, Zero, CondClassType {COND_EQ}, 0x1 /* nzcV */);
  CFInverted = true;
 }

@@ -423,7 +427,7 @@ void OpDispatchBuilder::CalculateFlags_UMUL(Ref High) {

  // If High = 0, then sets to nZCv. Else sets to nzcV. Since SF/ZF undefined,
  // this does what we need.
-  _CondSubNZCV(Size, Zero, Zero, CondClass::EQ, 0x1 /* nzcV */);
+  _CondSubNZCV(Size, Zero, Zero, CondClassType {COND_EQ}, 0x1 /* nzcV */);
  CFInverted = true;
 }

@@ -6,7 +6,6 @@ namespace FEXCore::IR {
 #define OPD(prefix, opcode) (((prefix) << 8) | opcode)
 constexpr uint16_t PF_38_NONE = 0;
 constexpr uint16_t PF_38_66 = (1U << 0);
-constexpr uint16_t PF_38_F2 = (1U << 1);
 constexpr uint16_t PF_38_F3 = (1U << 2);

 constexpr DispatchTableEntry OpDispatch_H0F38Table[] = {
@@ -72,28 +71,9 @@ constexpr DispatchTableEntry OpDispatch_H0F38Table[] = {
  {OPD(PF_38_66, 0x40), 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::VectorALUOp, IR::OP_VMUL, OpSize::i32Bit>},
  {OPD(PF_38_66, 0x41), 1, &OpDispatchBuilder::PHMINPOSUWOp},

-  {OPD(PF_38_NONE, 0xC8), 1, &OpDispatchBuilder::SHA1NEXTEOp},
-  {OPD(PF_38_NONE, 0xC9), 1, &OpDispatchBuilder::SHA1MSG1Op},
-  {OPD(PF_38_NONE, 0xCA), 1, &OpDispatchBuilder::SHA1MSG2Op},
-  {OPD(PF_38_NONE, 0xCB), 1, &OpDispatchBuilder::SHA256RNDS2Op},
-  {OPD(PF_38_NONE, 0xCC), 1, &OpDispatchBuilder::SHA256MSG1Op},
-  {OPD(PF_38_NONE, 0xCD), 1, &OpDispatchBuilder::SHA256MSG2Op},
-
-  {OPD(PF_38_66, 0xDB), 1, &OpDispatchBuilder::AESImcOp},
-  {OPD(PF_38_66, 0xDC), 1, &OpDispatchBuilder::AESEncOp},
-  {OPD(PF_38_66, 0xDD), 1, &OpDispatchBuilder::AESEncLastOp},
-  {OPD(PF_38_66, 0xDE), 1, &OpDispatchBuilder::AESDecOp},
-  {OPD(PF_38_66, 0xDF), 1, &OpDispatchBuilder::AESDecLastOp},
-
  {OPD(PF_38_NONE, 0xF0), 2, &OpDispatchBuilder::MOVBEOp},
  {OPD(PF_38_66, 0xF0), 2, &OpDispatchBuilder::MOVBEOp},

-  {OPD(PF_38_F2, 0xF0), 1, &OpDispatchBuilder::CRC32},
-  {OPD(PF_38_F2, 0xF1), 1, &OpDispatchBuilder::CRC32},
-
-  {OPD(PF_38_66 | PF_38_F2, 0xF0), 1, &OpDispatchBuilder::CRC32},
-  {OPD(PF_38_66 | PF_38_F2, 0xF1), 1, &OpDispatchBuilder::CRC32},
-
  {OPD(PF_38_66, 0xF6), 1, &OpDispatchBuilder::ADXOp},
  {OPD(PF_38_F3, 0xF6), 1, &OpDispatchBuilder::ADXOp},
 };
@@ -29,7 +29,6 @@ constexpr auto OpDispatchTableGenH0F3A = []() consteval {
      {OPD(REX, PF_3A_66, 0x40), 1, &OpDispatchBuilder::DPPOp<OpSize::i32Bit>},
      {OPD(REX, PF_3A_66, 0x41), 1, &OpDispatchBuilder::DPPOp<OpSize::i64Bit>},
      {OPD(REX, PF_3A_66, 0x42), 1, &OpDispatchBuilder::MPSADBWOp},
-      {OPD(REX, PF_3A_66, 0x44), 1, &OpDispatchBuilder::PCLMULQDQOp},

      {OPD(REX, PF_3A_66, 0x60), 1, &OpDispatchBuilder::VPCMPESTRMOp},
      {OPD(REX, PF_3A_66, 0x61), 1, &OpDispatchBuilder::VPCMPESTRIOp},
@@ -37,8 +36,6 @@ constexpr auto OpDispatchTableGenH0F3A = []() consteval {
      {OPD(REX, PF_3A_66, 0x63), 1, &OpDispatchBuilder::VPCMPISTRIOp},

      {OPD(REX, PF_3A_NONE, 0xCC), 1, &OpDispatchBuilder::SHA1RNDS4Op},
-      {OPD(REX, PF_3A_66, 0xDF), 1, &OpDispatchBuilder::AESKeyGenAssist},
-
    };
    return std::to_array(Table);
  };
@@ -68,6 +65,11 @@ constexpr DispatchTableEntry OpDispatch_H0F3ATableNeedsREX0[] = {
  {OPD(0, PF_3A_66, 0x22), 1, &OpDispatchBuilder::PINSROp<OpSize::i32Bit>},
 };

+constexpr DispatchTableEntry OpDispatch_H0F3ATable_64[] = {
+  {OPD(1, PF_3A_66, 0x16), 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PExtrOp, OpSize::i64Bit>},
+  {OPD(1, PF_3A_66, 0x22), 1, &OpDispatchBuilder::PINSROp<OpSize::i64Bit>},
+};
+
 #undef PF_3A_NONE
 #undef PF_3A_66

@@ -117,9 +117,7 @@ constexpr DispatchTableEntry OpDispatch_PrimaryGroupTables[] = {
  {OPD(FEXCore::X86Tables::TYPE_GROUP_5, OpToIndex(0xFF), 0), 1, &OpDispatchBuilder::INCOp}, // INC
  {OPD(FEXCore::X86Tables::TYPE_GROUP_5, OpToIndex(0xFF), 1), 1, &OpDispatchBuilder::DECOp}, // DEC
  {OPD(FEXCore::X86Tables::TYPE_GROUP_5, OpToIndex(0xFF), 2), 1, &OpDispatchBuilder::CALLAbsoluteOp},
-  {OPD(FEXCore::X86Tables::TYPE_GROUP_5, OpToIndex(0xFF), 3), 1, &OpDispatchBuilder::CALLFARIndirectOp},
  {OPD(FEXCore::X86Tables::TYPE_GROUP_5, OpToIndex(0xFF), 4), 1, &OpDispatchBuilder::JUMPAbsoluteOp},
-  {OPD(FEXCore::X86Tables::TYPE_GROUP_5, OpToIndex(0xFF), 5), 1, &OpDispatchBuilder::JUMPFARIndirectOp},
  {OPD(FEXCore::X86Tables::TYPE_GROUP_5, OpToIndex(0xFF), 6), 1, &OpDispatchBuilder::PUSHOp},

  // GROUP 11
@@ -69,16 +69,10 @@ constexpr DispatchTableEntry OpDispatch_SecondaryGroupTables[] = {

  // GROUP 9
  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_NONE, 1), 1, &OpDispatchBuilder::CMPXCHGPairOp},
-  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_NONE, 6), 1, &OpDispatchBuilder::RDRANDOp<false>},
-  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_NONE, 7), 1, &OpDispatchBuilder::RDRANDOp<true>},
-
+  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_F3, 1), 1, &OpDispatchBuilder::CMPXCHGPairOp},
  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_66, 1), 1, &OpDispatchBuilder::CMPXCHGPairOp},
-  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_66, 6), 1, &OpDispatchBuilder::RDRANDOp<false>},
-  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_66, 7), 1, &OpDispatchBuilder::RDRANDOp<true>},
-
  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_F2, 1), 1, &OpDispatchBuilder::CMPXCHGPairOp},

-  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_F3, 1), 1, &OpDispatchBuilder::CMPXCHGPairOp},
  {OPD(FEXCore::X86Tables::TYPE_GROUP_9, PF_F3, 7), 1, &OpDispatchBuilder::RDPIDOp},

  // GROUP 12
@@ -151,9 +145,6 @@ constexpr DispatchTableEntry OpDispatch_SecondaryGroupTables[] = {
  {OPD(FEXCore::X86Tables::TYPE_GROUP_16, PF_F2, 3), 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::Prefetch, false, false, 3>},
  {OPD(FEXCore::X86Tables::TYPE_GROUP_16, PF_F2, 4), 4, &OpDispatchBuilder::NOPOp},

-  // GROUP 17
-  {OPD(FEXCore::X86Tables::TYPE_GROUP_17, PF_66, 0), 1, &OpDispatchBuilder::Extrq_imm},
-
  // GROUP P
  {OPD(FEXCore::X86Tables::TYPE_GROUP_P, PF_NONE, 0), 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::Prefetch, false, false, 1>},
  {OPD(FEXCore::X86Tables::TYPE_GROUP_P, PF_NONE, 1), 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::Prefetch, true, false, 1>},
@@ -165,6 +156,18 @@ constexpr DispatchTableEntry OpDispatch_SecondaryGroupTables[] = {
  {OPD(FEXCore::X86Tables::TYPE_GROUP_P, PF_F2, 0), 8, &OpDispatchBuilder::NOPOp},
 };

+constexpr DispatchTableEntry OpDispatch_SecondaryGroupTables_64[] = {
+  // GROUP 15
+  {OPD(FEXCore::X86Tables::TYPE_GROUP_15, PF_F3, 0), 1,
+   &OpDispatchBuilder::Bind<&OpDispatchBuilder::ReadSegmentReg, OpDispatchBuilder::Segment::FS>},
+  {OPD(FEXCore::X86Tables::TYPE_GROUP_15, PF_F3, 1), 1,
+   &OpDispatchBuilder::Bind<&OpDispatchBuilder::ReadSegmentReg, OpDispatchBuilder::Segment::GS>},
+  {OPD(FEXCore::X86Tables::TYPE_GROUP_15, PF_F3, 2), 1,
+   &OpDispatchBuilder::Bind<&OpDispatchBuilder::WriteSegmentReg, OpDispatchBuilder::Segment::FS>},
+  {OPD(FEXCore::X86Tables::TYPE_GROUP_15, PF_F3, 3), 1,
+   &OpDispatchBuilder::Bind<&OpDispatchBuilder::WriteSegmentReg, OpDispatchBuilder::Segment::GS>},
+};
+
 #undef OPD

 } // namespace FEXCore::IR
@@ -17,7 +17,6 @@ constexpr DispatchTableEntry OpDispatch_SecondaryModRMTables[] = {
  // REG /7
  {((3 << 3) | 0), 1, &OpDispatchBuilder::PermissionRestrictedOp},
  {((3 << 3) | 1), 1, &OpDispatchBuilder::RDTSCPOp},
-  {((3 << 3) | 4), 1, &OpDispatchBuilder::CLZeroOp},
 };

 } // namespace FEXCore::IR
@@ -198,8 +198,6 @@ constexpr DispatchTableEntry OpDispatch_SecondaryRepNEModTables[] = {
  {0x5E, 1, &OpDispatchBuilder::VectorScalarInsertALUOp<IR::OP_VFDIVSCALARINSERT, OpSize::i64Bit>},
  {0x5F, 1, &OpDispatchBuilder::VectorScalarInsertALUOp<IR::OP_VFMAXSCALARINSERT, OpSize::i64Bit>},
  {0x70, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PSHUFWOp, true>},
-  {0x78, 1, &OpDispatchBuilder::Insertq_imm},
-  {0x79, 1, &OpDispatchBuilder::Insertq},
  {0x7C, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::VectorALUOp, IR::OP_VFADDP, OpSize::i32Bit>},
  {0x7D, 1, &OpDispatchBuilder::HSUBP<OpSize::i32Bit>},
  {0xD0, 1, &OpDispatchBuilder::ADDSUBPOp<OpSize::i32Bit>},
@@ -258,7 +256,6 @@ constexpr DispatchTableEntry OpDispatch_SecondaryOpSizeModTables[] = {
  {0x75, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::VectorALUOp, IR::OP_VCMPEQ, OpSize::i16Bit>},
  {0x76, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::VectorALUOp, IR::OP_VCMPEQ, OpSize::i32Bit>},
  {0x78, 1, nullptr}, // GROUP 17
-  {0x79, 1, &OpDispatchBuilder::Extrq},
  {0x7C, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::VectorALUOp, IR::OP_VFADDP, OpSize::i64Bit>},
  {0x7D, 1, &OpDispatchBuilder::HSUBP<OpSize::i64Bit>},
  {0x7E, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::MOVBetweenGPR_FPR, OpDispatchBuilder::VectorOpType::SSE>},
@@ -316,4 +313,20 @@ constexpr DispatchTableEntry OpDispatch_SecondaryOpSizeModTables[] = {
  {0xFD, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::VectorALUOp, IR::OP_VADD, OpSize::i16Bit>},
  {0xFE, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::VectorALUOp, IR::OP_VADD, OpSize::i32Bit>},
 };
+
+constexpr DispatchTableEntry OpDispatch_TwoByteOpTable_64[] = {
+  {0x05, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::SyscallOp, true>},
+  {0xA0, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_FS_PREFIX>},
+  {0xA1, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_FS_PREFIX>},
+  {0xA8, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_GS_PREFIX>},
+  {0xA9, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_GS_PREFIX>},
+};
+
+constexpr DispatchTableEntry OpDispatch_TwoByteOpTable_32[] = {
+  {0x05, 1, &OpDispatchBuilder::NOPOp},
+  {0xA0, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_FS_PREFIX>},
+  {0xA1, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_FS_PREFIX>},
+  {0xA8, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_GS_PREFIX>},
+  {0xA9, 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_GS_PREFIX>},
+};
 } // namespace FEXCore::IR
@@ -28,42 +28,36 @@ class OrderedNode;
 Ref OpDispatchBuilder::GetX87Top() {
  // Yes, we are storing 3 bits in a single flag register.
  // Deal with it
-  return _LoadContextGPR(OpSize::i8Bit, offsetof(FEXCore::Core::CPUState, flags) + FEXCore::X86State::X87FLAG_TOP_LOC);
+  return _LoadContext(OpSize::i8Bit, GPRClass, offsetof(FEXCore::Core::CPUState, flags) + FEXCore::X86State::X87FLAG_TOP_LOC);
 }

 void OpDispatchBuilder::SetX87FTW(Ref FTW) {
-  _StackForceSlow(); // Invalidate x87 FTW register cache
+  Ref X87Empty = Constant(static_cast<uint8_t>(FPState::X87Tag::Empty));
+  Ref NewAbridgedFTW {};

-  // For the output, we want a 1-bit for each pair not equal to 11 (Empty).
-  static_assert(static_cast<uint8_t>(FPState::X87Tag::Empty) == 0b11);
+  for (int i = 0; i < 8; i++) {
+    Ref RegTag = _Bfe(OpSize::i32Bit, 2, i * 2, FTW);
+    Ref RegValid = _Select(FEXCore::IR::COND_NEQ, RegTag, X87Empty, Constant(1), Constant(0));

-  // Make even bits 1 if the pair is equal to 11, and 0 otherwise.
-  FTW = _AndShift(OpSize::i32Bit, FTW, FTW, ShiftType::LSR, 1);
+    if (i) {
+      NewAbridgedFTW = _Orlshl(OpSize::i32Bit, NewAbridgedFTW, RegValid, i);
+    } else {
+      NewAbridgedFTW = RegValid;
+    }
+  }

-  // Invert FTW and clear the odd bits. Even bits are 1 if the pair
-  // is not equal to 11, and odd bits are 0.
-  FTW = _Andn(OpSize::i32Bit, Constant(0x55555555), FTW);
-
-  // All that's left is to compact away the odd bits. That is a Morton
-  // deinterleave operation, which has a standard solution. See
-  // https://stackoverflow.com/questions/3137266/how-to-de-interleave-bits-unmortonizing
-  FTW = _And(OpSize::i32Bit, _Orlshr(OpSize::i32Bit, FTW, FTW, 1), Constant(0x33333333));
-  FTW = _And(OpSize::i32Bit, _Orlshr(OpSize::i32Bit, FTW, FTW, 2), Constant(0x0f0f0f0f));
-  FTW = _Orlshr(OpSize::i32Bit, FTW, FTW, 4);
-
-  // ...and that's it. StoreContext implicitly does the final masking.
-  _StoreContextGPR(OpSize::i8Bit, FTW, offsetof(FEXCore::Core::CPUState, AbridgedFTW));
+  StoreContext(AbridgedFTWIndex, NewAbridgedFTW);
 }

 void OpDispatchBuilder::SetX87Top(Ref Value) {
-  _StoreContextGPR(OpSize::i8Bit, Value, offsetof(FEXCore::Core::CPUState, flags) + FEXCore::X86State::X87FLAG_TOP_LOC);
+  _StoreContext(OpSize::i8Bit, GPRClass, Value, offsetof(FEXCore::Core::CPUState, flags) + FEXCore::X86State::X87FLAG_TOP_LOC);
 }

 // Float LoaD operation with memory operand
 void OpDispatchBuilder::FLD(OpcodeArgs, IR::OpSize Width) {
  const auto ReadWidth = (Width == OpSize::f80Bit) ? OpSize::i128Bit : Width;

-  Ref Data = LoadSourceFPR_WithOpSize(Op, Op->Src[0], Width, Op->Flags);
+  Ref Data = LoadSource_WithOpSize(FPRClass, Op, Op->Src[0], Width, Op->Flags);
  Ref ConvertedData = Data;
  // Convert to 80bit float
  if (Width == OpSize::i32Bit || Width == OpSize::i64Bit) {
@@ -79,14 +73,14 @@ void OpDispatchBuilder::FLDFromStack(OpcodeArgs) {

 void OpDispatchBuilder::FBLD(OpcodeArgs) {
  // Read from memory
-  Ref Data = LoadSourceFPR_WithOpSize(Op, Op->Src[0], OpSize::f80Bit, Op->Flags);
+  Ref Data = LoadSource_WithOpSize(FPRClass, Op, Op->Src[0], OpSize::f80Bit, Op->Flags);
  Ref ConvertedData = _F80BCDLoad(Data);
  _PushStack(ConvertedData, Data, OpSize::i128Bit, true);
 }

 void OpDispatchBuilder::FBSTP(OpcodeArgs) {
  Ref converted = _F80BCDStore(_ReadStackValue(0));
-  StoreResultFPR_WithOpSize(Op, Op->Dest, converted, OpSize::f80Bit, OpSize::i8Bit);
+  StoreResult_WithOpSize(FPRClass, Op, Op->Dest, converted, OpSize::f80Bit, OpSize::i8Bit);
  _PopStackDestroy();
 }

@@ -99,7 +93,7 @@ void OpDispatchBuilder::FLD_Const(OpcodeArgs, NamedVectorConstant K) {
 void OpDispatchBuilder::FILD(OpcodeArgs) {
  const auto ReadWidth = OpSizeFromSrc(Op);
  // Read from memory
-  Ref Data = LoadSourceGPR_WithOpSize(Op, Op->Src[0], ReadWidth, Op->Flags);
+  Ref Data = LoadSource_WithOpSize(GPRClass, Op, Op->Src[0], ReadWidth, Op->Flags);

  // Sign extend to 64bits
  if (ReadWidth != OpSize::i64Bit) {
@@ -112,15 +106,15 @@ void OpDispatchBuilder::FILD(OpcodeArgs) {
  // Extract sign and make integer absolute
  auto zero = Constant(0);
  _SubNZCV(OpSize::i64Bit, Data, zero);
-  auto sign = _NZCVSelect(OpSize::i64Bit, CondClass::SLT, Constant(0x8000), zero);
-  auto absolute = _Neg(OpSize::i64Bit, Data, CondClass::MI);
+  auto sign = _NZCVSelect(OpSize::i64Bit, CondClassType {COND_SLT}, Constant(0x8000), zero);
+  auto absolute = _Neg(OpSize::i64Bit, Data, CondClassType {COND_MI});

  // left justify the absolute integer
-  auto shift = Sub(OpSize::i64Bit, Constant(63), _FindMSB(IR::OpSize::i64Bit, absolute));
+  auto shift = _Sub(OpSize::i64Bit, Constant(63), _FindMSB(IR::OpSize::i64Bit, absolute));
  auto shifted = _Lshl(OpSize::i64Bit, absolute, shift);

-  auto adjusted_exponent = Sub(OpSize::i64Bit, Constant(0x3fff + 63), shift);
-  auto zeroed_exponent = _Select(OpSize::i64Bit, OpSize::i64Bit, CondClass::EQ, absolute, zero, zero, adjusted_exponent);
+  auto adjusted_exponent = _Sub(OpSize::i64Bit, Constant(0x3fff + 63), shift);
+  auto zeroed_exponent = _Select(COND_EQ, absolute, zero, zero, adjusted_exponent);
  auto upper = _Or(OpSize::i64Bit, sign, zeroed_exponent);

  Ref ConvertedData = _VLoadTwoGPRs(shifted, upper);
@@ -166,12 +160,12 @@ void OpDispatchBuilder::FIST(OpcodeArgs, bool Truncate) {
    // Check for NaN/Infinity: exponent = 0x7fff
    SaveNZCV();
    _TestNZ(OpSize::i64Bit, Exponent, Constant(0x7fff));
-    Ref IsSpecial = _NZCVSelect01(CondClass::EQ);
+    Ref IsSpecial = _NZCVSelect(OpSize::i64Bit, {COND_EQ}, Constant(1), Constant(0));

    // For overflow detection, check if exponent indicates a value >= 2^15
    // Biased exponent for 2^15 is 0x3fff + 15 = 0x400e
-    SubWithFlags(OpSize::i64Bit, Exponent, 0x400e);
-    Ref IsOverflow = _NZCVSelect01(CondClass::UGE);
+    _SubWithFlags(OpSize::i64Bit, Exponent, Constant(0x400e));
+    Ref IsOverflow = _NZCVSelect(OpSize::i64Bit, {COND_UGE}, Constant(1), Constant(0));

    // Set Invalid Operation flag if overflow or special value
    Ref InvalidFlag = _Or(OpSize::i64Bit, IsSpecial, IsOverflow);
@@ -180,7 +174,7 @@ void OpDispatchBuilder::FIST(OpcodeArgs, bool Truncate) {

  Data = _F80CVTInt(Size, Data, Truncate);

-  StoreResultGPR_WithOpSize(Op, Op->Dest, Data, Size, OpSize::i8Bit);
+  StoreResult_WithOpSize(GPRClass, Op, Op->Dest, Data, Size, OpSize::i8Bit);

  if ((Op->TableInfo->Flags & X86Tables::InstFlags::FLAGS_POP) != 0) {
    _PopStackDestroy();
@@ -206,10 +200,10 @@ void OpDispatchBuilder::FADD(OpcodeArgs, IR::OpSize Width, bool Integer, OpDispa
  // We have one memory argument
  Ref Arg {};
  if (Integer) {
-    Arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+    Arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
    Arg = _F80CVTToInt(Arg, Width);
  } else {
-    Arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+    Arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    Arg = _F80CVTTo(Arg, Width);
  }

@@ -236,10 +230,10 @@ void OpDispatchBuilder::FMUL(OpcodeArgs, IR::OpSize Width, bool Integer, OpDispa
  // We have one memory argument
  Ref arg {};
  if (Integer) {
-    arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
    arg = _F80CVTToInt(arg, Width);
  } else {
-    arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    arg = _F80CVTTo(arg, Width);
  }

@@ -273,10 +267,10 @@ void OpDispatchBuilder::FDIV(OpcodeArgs, IR::OpSize Width, bool Integer, bool Re
  // We have one memory argument
  Ref arg {};
  if (Integer) {
-    arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
    arg = _F80CVTToInt(arg, Width);
  } else {
-    arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    arg = _F80CVTTo(arg, Width);
  }

@@ -314,10 +308,10 @@ void OpDispatchBuilder::FSUB(OpcodeArgs, IR::OpSize Width, bool Integer, bool Re
  // We have one memory argument
  Ref Arg {};
  if (Integer) {
-    Arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+    Arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
    Arg = _F80CVTToInt(Arg, Width);
  } else {
-    Arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+    Arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    Arg = _F80CVTTo(Arg, Width);
  }

@@ -340,7 +334,7 @@ Ref OpDispatchBuilder::GetX87FTW_Helper() {
  // bytes, we use the well-known bit twiddling algorithm:
  //
  // https://graphics.stanford.edu/~seander/bithacks.html#InterleaveBMN
-  Ref X = _LoadContextGPR(OpSize::i8Bit, offsetof(FEXCore::Core::CPUState, AbridgedFTW));
+  Ref X = LoadContext(AbridgedFTWIndex);
  X = _Orlshl(OpSize::i32Bit, X, X, 4);
  X = _And(OpSize::i32Bit, X, Constant(0x0f0f0f0f));
  X = _Orlshl(OpSize::i32Bit, X, X, 2);
@@ -381,41 +375,41 @@ void OpDispatchBuilder::X87FNSTENV(OpcodeArgs) {
  _SyncStackToSlow();

  const auto Size = OpSizeFromSrc(Op);
-  Ref Mem = LoadSourceGPR(Op, Op->Dest, Op->Flags, {.LoadData = false});
+  Ref Mem = LoadSource(GPRClass, Op, Op->Dest, Op->Flags, {.LoadData = false});
  Mem = AppendSegmentOffset(Mem, Op->Flags);

  {
-    auto FCW = _LoadContextGPR(OpSize::i16Bit, offsetof(FEXCore::Core::CPUState, FCW));
-    _StoreMemGPR(Size, Mem, FCW, Size);
+    auto FCW = _LoadContext(OpSize::i16Bit, GPRClass, offsetof(FEXCore::Core::CPUState, FCW));
+    _StoreMem(GPRClass, Size, Mem, FCW, Size);
  }

-  { _StoreMemGPR(Size, ReconstructFSW_Helper(), Mem, Constant(IR::OpSizeToSize(Size) * 1), Size, MemOffsetType::SXTX, 1); }
+  { _StoreMem(GPRClass, Size, ReconstructFSW_Helper(), Mem, Constant(IR::OpSizeToSize(Size) * 1), Size, MEM_OFFSET_SXTX, 1); }

  auto ZeroConst = Constant(0);

  {
    // FTW
-    _StoreMemGPR(Size, GetX87FTW_Helper(), Mem, Constant(IR::OpSizeToSize(Size) * 2), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, GetX87FTW_Helper(), Mem, Constant(IR::OpSizeToSize(Size) * 2), Size, MEM_OFFSET_SXTX, 1);
  }

  {
    // Instruction Offset
-    _StoreMemGPR(Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 3), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 3), Size, MEM_OFFSET_SXTX, 1);
  }

  {
    // Instruction CS selector (+ Opcode)
-    _StoreMemGPR(Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 4), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 4), Size, MEM_OFFSET_SXTX, 1);
  }

  {
    // Data pointer offset
-    _StoreMemGPR(Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 5), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 5), Size, MEM_OFFSET_SXTX, 1);
  }

  {
    // Data pointer selector
-    _StoreMemGPR(Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 6), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 6), Size, MEM_OFFSET_SXTX, 1);
  }
 }

@@ -427,13 +421,11 @@ Ref OpDispatchBuilder::ReconstructX87StateFromFSW_Helper(Ref FSW) {
  auto C1 = _Bfe(OpSize::i32Bit, 1, 9, FSW);
  auto C2 = _Bfe(OpSize::i32Bit, 1, 10, FSW);
  auto C3 = _Bfe(OpSize::i32Bit, 1, 14, FSW);
-  auto IE = _Bfe(OpSize::i32Bit, 1, 0, FSW);

  SetRFLAG<FEXCore::X86State::X87FLAG_C0_LOC>(C0);
  SetRFLAG<FEXCore::X86State::X87FLAG_C1_LOC>(C1);
  SetRFLAG<FEXCore::X86State::X87FLAG_C2_LOC>(C2);
  SetRFLAG<FEXCore::X86State::X87FLAG_C3_LOC>(C3);
-  SetRFLAG<FEXCore::X86State::X87FLAG_IE_LOC>(IE);
  return Top;
 }

@@ -441,20 +433,20 @@ void OpDispatchBuilder::X87LDENV(OpcodeArgs) {
  _StackForceSlow();

  const auto Size = OpSizeFromSrc(Op);
-  Ref Mem = LoadSourceGPR(Op, Op->Src[0], Op->Flags, {.LoadData = false});
+  Ref Mem = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags, {.LoadData = false});
  Mem = AppendSegmentOffset(Mem, Op->Flags);

-  auto NewFCW = _LoadMemGPR(OpSize::i16Bit, Mem, OpSize::i16Bit);
-  _StoreContextGPR(OpSize::i16Bit, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
+  auto NewFCW = _LoadMem(GPRClass, OpSize::i16Bit, Mem, OpSize::i16Bit);
+  _StoreContext(OpSize::i16Bit, GPRClass, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));

-  Ref MemLocation = Add(OpSize::i64Bit, Mem, IR::OpSizeToSize(Size) * 1);
-  auto NewFSW = _LoadMemGPR(Size, MemLocation, Size);
+  Ref MemLocation = _Add(OpSize::i64Bit, Mem, Constant(IR::OpSizeToSize(Size) * 1));
+  auto NewFSW = _LoadMem(GPRClass, Size, MemLocation, Size);
  ReconstructX87StateFromFSW_Helper(NewFSW);

  {
    // FTW
-    Ref MemLocation = Add(OpSize::i64Bit, Mem, IR::OpSizeToSize(Size) * 2);
-    SetX87FTW(_LoadMemGPR(Size, MemLocation, Size));
+    Ref MemLocation = _Add(OpSize::i64Bit, Mem, Constant(IR::OpSizeToSize(Size) * 2));
+    SetX87FTW(_LoadMem(GPRClass, Size, MemLocation, Size));
  }
 }

@@ -483,61 +475,62 @@ void OpDispatchBuilder::X87FNSAVE(OpcodeArgs) {
  Ref Mem = MakeSegmentAddress(Op, Op->Dest);
  Ref Top = GetX87Top();
  {
-    auto FCW = _LoadContextGPR(OpSize::i16Bit, offsetof(FEXCore::Core::CPUState, FCW));
-    _StoreMemGPR(Size, Mem, FCW, Size);
+    auto FCW = _LoadContext(OpSize::i16Bit, GPRClass, offsetof(FEXCore::Core::CPUState, FCW));
+    _StoreMem(GPRClass, Size, Mem, FCW, Size);
  }

-  { _StoreMemGPR(Size, ReconstructFSW_Helper(), Mem, Constant(IR::OpSizeToSize(Size) * 1), Size, MemOffsetType::SXTX, 1); }
+  { _StoreMem(GPRClass, Size, ReconstructFSW_Helper(), Mem, Constant(IR::OpSizeToSize(Size) * 1), Size, MEM_OFFSET_SXTX, 1); }

  auto ZeroConst = Constant(0);

  {
    // FTW
-    _StoreMemGPR(Size, GetX87FTW_Helper(), Mem, Constant(IR::OpSizeToSize(Size) * 2), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, GetX87FTW_Helper(), Mem, Constant(IR::OpSizeToSize(Size) * 2), Size, MEM_OFFSET_SXTX, 1);
  }

  {
    // Instruction Offset
-    _StoreMemGPR(Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 3), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 3), Size, MEM_OFFSET_SXTX, 1);
  }

  {
    // Instruction CS selector (+ Opcode)
-    _StoreMemGPR(Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 4), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 4), Size, MEM_OFFSET_SXTX, 1);
  }

  {
    // Data pointer offset
-    _StoreMemGPR(Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 5), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 5), Size, MEM_OFFSET_SXTX, 1);
  }

  {
    // Data pointer selector
-    _StoreMemGPR(Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 6), Size, MemOffsetType::SXTX, 1);
+    _StoreMem(GPRClass, Size, ZeroConst, Mem, Constant(IR::OpSizeToSize(Size) * 6), Size, MEM_OFFSET_SXTX, 1);
  }

+  auto OneConst = Constant(1);
  auto SevenConst = Constant(7);
  const auto LoadSize = ReducedPrecisionMode ? OpSize::i64Bit : OpSize::i128Bit;
  for (int i = 0; i < 7; ++i) {
-    Ref data = _LoadContextFPRIndexed(Top, LoadSize, MMBaseOffset(), IR::OpSizeToSize(OpSize::i128Bit));
+    Ref data = _LoadContextIndexed(Top, LoadSize, MMBaseOffset(), IR::OpSizeToSize(OpSize::i128Bit), FPRClass);
    if (ReducedPrecisionMode) {
      data = _F80CVTTo(data, OpSize::i64Bit);
    }
-    _StoreMemFPR(OpSize::i128Bit, data, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (10 * i)), OpSize::i8Bit, MemOffsetType::SXTX, 1);
-    Top = _And(OpSize::i32Bit, Add(OpSize::i32Bit, Top, 1), SevenConst);
+    _StoreMem(FPRClass, OpSize::i128Bit, data, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (10 * i)), OpSize::i8Bit, MEM_OFFSET_SXTX, 1);
+    Top = _And(OpSize::i32Bit, _Add(OpSize::i32Bit, Top, OneConst), SevenConst);
  }

  // The final st(7) needs a bit of special handling here
-  Ref data = _LoadContextFPRIndexed(Top, LoadSize, MMBaseOffset(), IR::OpSizeToSize(OpSize::i128Bit));
+  Ref data = _LoadContextIndexed(Top, LoadSize, MMBaseOffset(), IR::OpSizeToSize(OpSize::i128Bit), FPRClass);
  if (ReducedPrecisionMode) {
    data = _F80CVTTo(data, OpSize::i64Bit);
  }
  // ST7 broken in to two parts
  // Lower 64bits [63:0]
  // upper 16 bits [79:64]
-  _StoreMemFPR(OpSize::i64Bit, data, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (7 * 10)), OpSize::i8Bit, MemOffsetType::SXTX, 1);
+  _StoreMem(FPRClass, OpSize::i64Bit, data, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (7 * 10)), OpSize::i8Bit, MEM_OFFSET_SXTX, 1);
  auto topBytes = _VDupElement(OpSize::i128Bit, OpSize::i16Bit, data, 4);
-  _StoreMemFPR(OpSize::i16Bit, topBytes, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (7 * 10) + 8), OpSize::i8Bit, MemOffsetType::SXTX, 1);
+  _StoreMem(FPRClass, OpSize::i16Bit, topBytes, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (7 * 10) + 8), OpSize::i8Bit, MEM_OFFSET_SXTX, 1);

  // reset to default
  FNINIT(Op);
@@ -548,8 +541,8 @@ void OpDispatchBuilder::X87FRSTOR(OpcodeArgs) {
  const auto Size = OpSizeFromSrc(Op);
  Ref Mem = MakeSegmentAddress(Op, Op->Src[0]);

-  auto NewFCW = _LoadMemGPR(OpSize::i16Bit, Mem, OpSize::i16Bit);
-  _StoreContextGPR(OpSize::i16Bit, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
+  auto NewFCW = _LoadMem(GPRClass, OpSize::i16Bit, Mem, OpSize::i16Bit);
+  _StoreContext(OpSize::i16Bit, GPRClass, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
  if (ReducedPrecisionMode) {
    // ignore the rounding precision, we're always 64-bit in F64.
    // extract rounding mode
@@ -561,48 +554,51 @@ void OpDispatchBuilder::X87FRSTOR(OpcodeArgs) {
    _SetRoundingMode(roundingMode, false, roundingMode);
  }

-  auto NewFSW = _LoadMemGPR(Size, Mem, Constant(IR::OpSizeToSize(Size) * 1), Size, MemOffsetType::SXTX, 1);
+  auto NewFSW = _LoadMem(GPRClass, Size, Mem, Constant(IR::OpSizeToSize(Size) * 1), Size, MEM_OFFSET_SXTX, 1);
  Ref Top = ReconstructX87StateFromFSW_Helper(NewFSW);
  {
    // FTW
-    SetX87FTW(_LoadMemGPR(Size, Mem, Constant(IR::OpSizeToSize(Size) * 2), Size, MemOffsetType::SXTX, 1));
+    SetX87FTW(_LoadMem(GPRClass, Size, Mem, Constant(IR::OpSizeToSize(Size) * 2), Size, MEM_OFFSET_SXTX, 1));
  }

+  auto OneConst = Constant(1);
  auto SevenConst = Constant(7);
+
  auto low = Constant(~0ULL);
  auto high = Constant(0xFFFF);
  Ref Mask = _VLoadTwoGPRs(low, high);
  const auto StoreSize = ReducedPrecisionMode ? OpSize::i64Bit : OpSize::i128Bit;
  for (int i = 0; i < 7; ++i) {
-    Ref Reg = _LoadMemFPR(OpSize::i128Bit, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (10 * i)), OpSize::i8Bit, MemOffsetType::SXTX, 1);
+    Ref Reg = _LoadMem(FPRClass, OpSize::i128Bit, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (10 * i)), OpSize::i8Bit, MEM_OFFSET_SXTX, 1);
    // Mask off the top bits
    Reg = _VAnd(OpSize::i128Bit, OpSize::i128Bit, Reg, Mask);
    if (ReducedPrecisionMode) {
      // Convert to double precision
      Reg = _F80CVT(OpSize::i64Bit, Reg);
    }
-    _StoreContextFPRIndexed(Reg, Top, StoreSize, MMBaseOffset(), IR::OpSizeToSize(OpSize::i128Bit));
+    _StoreContextIndexed(Reg, Top, StoreSize, MMBaseOffset(), IR::OpSizeToSize(OpSize::i128Bit), FPRClass);

-    Top = _And(OpSize::i32Bit, Add(OpSize::i32Bit, Top, 1), SevenConst);
+    Top = _And(OpSize::i32Bit, _Add(OpSize::i32Bit, Top, OneConst), SevenConst);
  }

  // The final st(7) needs a bit of special handling here
  // ST7 broken in to two parts
  // Lower 64bits [63:0]
  // upper 16 bits [79:64]
-  Ref Reg = _LoadMemFPR(OpSize::i64Bit, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (10 * 7)), OpSize::i8Bit, MemOffsetType::SXTX, 1);
-  Ref RegHigh = _LoadMemFPR(OpSize::i16Bit, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (10 * 7) + 8), OpSize::i8Bit, MemOffsetType::SXTX, 1);
+  Ref Reg = _LoadMem(FPRClass, OpSize::i64Bit, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (10 * 7)), OpSize::i8Bit, MEM_OFFSET_SXTX, 1);
+  Ref RegHigh =
+    _LoadMem(FPRClass, OpSize::i16Bit, Mem, Constant((IR::OpSizeToSize(Size) * 7) + (10 * 7) + 8), OpSize::i8Bit, MEM_OFFSET_SXTX, 1);
  Reg = _VInsElement(OpSize::i128Bit, OpSize::i16Bit, 4, 0, Reg, RegHigh);
  if (ReducedPrecisionMode) {
    Reg = _F80CVT(OpSize::i64Bit, Reg); // Convert to double precision
  }
-  _StoreContextFPRIndexed(Reg, Top, StoreSize, MMBaseOffset(), IR::OpSizeToSize(OpSize::i128Bit));
+  _StoreContextIndexed(Reg, Top, StoreSize, MMBaseOffset(), IR::OpSizeToSize(OpSize::i128Bit), FPRClass);
 }

 // Load / Store Control Word
 void OpDispatchBuilder::X87FSTCW(OpcodeArgs) {
-  auto FCW = _LoadContextGPR(OpSize::i16Bit, offsetof(FEXCore::Core::CPUState, FCW));
-  StoreResultGPR(Op, FCW);
+  auto FCW = _LoadContext(OpSize::i16Bit, GPRClass, offsetof(FEXCore::Core::CPUState, FCW));
+  StoreResult(GPRClass, Op, FCW, OpSize::iInvalid);
 }

 void OpDispatchBuilder::X87FLDCW(OpcodeArgs) {
@@ -610,8 +606,8 @@ void OpDispatchBuilder::X87FLDCW(OpcodeArgs) {
  // to switch for now to slow mode whenever these are manually changed.
  // Remove the next line and try DF_04.asm in fast path.
  _StackForceSlow();
-  Ref NewFCW = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
-  _StoreContextGPR(OpSize::i16Bit, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
+  Ref NewFCW = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
+  _StoreContext(OpSize::i16Bit, GPRClass, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
 }

 void OpDispatchBuilder::FXCH(OpcodeArgs) {
@@ -647,10 +643,10 @@ void OpDispatchBuilder::FCOMI(OpcodeArgs, IR::OpSize Width, bool Integer, OpDisp
    if (Width == OpSize::i16Bit || Width == OpSize::i32Bit || Width == OpSize::i64Bit) {
      // Memory arg
      if (Integer) {
-        arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+        arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
        b = _F80CVTToInt(arg, Width);
      } else {
-        arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+        arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
        b = _F80CVTTo(arg, Width);
      }
    } else {
@@ -681,9 +677,6 @@ void OpDispatchBuilder::FCOMI(OpcodeArgs, IR::OpSize Width, bool Integer, OpDisp
    SetRFLAG<FEXCore::X86State::RFLAG_PF_RAW_LOC>(PF);
  }

-  // Set Invalid Operation flag when unordered (NaN comparison)
-  SetRFLAG<FEXCore::X86State::X87FLAG_IE_LOC>(HostFlag_Unordered);
-
  if (PopTwice) {
    _PopStackDestroy();
    _PopStackDestroy();
@@ -705,9 +698,6 @@ void OpDispatchBuilder::FTST(OpcodeArgs) {
  SetRFLAG<FEXCore::X86State::X87FLAG_C1_LOC>(Constant(0));
  SetRFLAG<FEXCore::X86State::X87FLAG_C2_LOC>(HostFlag_Unordered);
  SetRFLAG<FEXCore::X86State::X87FLAG_C3_LOC>(HostFlag_ZF);
-
-  // Set Invalid Operation flag when unordered (NaN comparison)
-  SetRFLAG<FEXCore::X86State::X87FLAG_IE_LOC>(HostFlag_Unordered);
 }

 void OpDispatchBuilder::X87OpHelper(OpcodeArgs, FEXCore::IR::IROps IROp, bool ZeroC2) {
@@ -766,17 +756,10 @@ Ref OpDispatchBuilder::ReconstructFSW_Helper(Ref T) {
 void OpDispatchBuilder::X87FNSTSW(OpcodeArgs) {
  Ref TopValue = _SyncStackToSlow();
  Ref StatusWord = ReconstructFSW_Helper(TopValue);
-  StoreResultGPR(Op, StatusWord);
-}
-
-void OpDispatchBuilder::FNCLEX(OpcodeArgs) {
-  // Clear the exception flag bit
-  SetRFLAG<FEXCore::X86State::X87FLAG_IE_LOC>(_Constant(0));
+  StoreResult(GPRClass, Op, StatusWord, OpSize::iInvalid);
 }

 void OpDispatchBuilder::FNINIT(OpcodeArgs) {
-  _SyncStackToSlow(); // Invalidate x87 register caches
-
  auto Zero = Constant(0);

  if (ReducedPrecisionMode) {
@@ -785,12 +768,12 @@ void OpDispatchBuilder::FNINIT(OpcodeArgs) {

  // Init FCW to 0x037F
  auto NewFCW = Constant(0x037F);
-  _StoreContextGPR(OpSize::i16Bit, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
+  _StoreContext(OpSize::i16Bit, GPRClass, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));

  // Set top to zero
  SetX87Top(Zero);
  // Tags all get marked as invalid
-  _StoreContextGPR(OpSize::i8Bit, Zero, offsetof(FEXCore::Core::CPUState, AbridgedFTW));
+  StoreContext(AbridgedFTWIndex, Zero);

  // Reinits the simulated stack
  _InitStack();
@@ -799,7 +782,6 @@ void OpDispatchBuilder::FNINIT(OpcodeArgs) {
  SetRFLAG<FEXCore::X86State::X87FLAG_C1_LOC>(Zero);
  SetRFLAG<FEXCore::X86State::X87FLAG_C2_LOC>(Zero);
  SetRFLAG<FEXCore::X86State::X87FLAG_C3_LOC>(Zero);
-  SetRFLAG<FEXCore::X86State::X87FLAG_IE_LOC>(Zero);
 }

 void OpDispatchBuilder::X87FFREE(OpcodeArgs) {
@@ -845,7 +827,11 @@ void OpDispatchBuilder::X87FCMOV(OpcodeArgs) {
  default: LOGMAN_MSG_A_FMT("Unhandled FCMOV op: 0x{:x}", Opcode); break;
  }

-  Ref VecCond = _VDupFromGPR(OpSize::i128Bit, OpSize::i64Bit, SelectCC0All1(CC));
+  auto ZeroConst = Constant(0);
+  auto AllOneConst = Constant(0xffff'ffff'ffff'ffffull);
+
+  Ref SrcCond = SelectCC(CC, OpSize::i64Bit, AllOneConst, ZeroConst);
+  Ref VecCond = _VDupFromGPR(OpSize::i128Bit, OpSize::i64Bit, SrcCond);
  _F80VBSLStack(OpSize::i128Bit, VecCond, Op->OP & 7, 0);
 }

@@ -861,9 +847,11 @@ void OpDispatchBuilder::X87FXAM(OpcodeArgs) {
  // Claim this is a normal number
  // We don't support anything else
  auto TopValid = _StackValidTag(0);
+  auto ZeroConst = Constant(0);
+  auto OneConst = Constant(1);

  // In the case of top being invalid then C3:C2:C0 is 0b101
-  auto C3 = Select01(OpSize::i32Bit, CondClass::NEQ, TopValid, Constant(1));
+  auto C3 = _Select(FEXCore::IR::COND_NEQ, TopValid, OneConst, OneConst, ZeroConst);

  auto C2 = TopValid;
  auto C0 = C3; // Mirror C3 until something other than zero is supported
@@ -29,38 +29,38 @@ void OpDispatchBuilder::X87LDENVF64(OpcodeArgs) {
  const auto Size = OpSizeFromSrc(Op);
  Ref Mem = MakeSegmentAddress(Op, Op->Src[0]);

-  auto NewFCW = _LoadMemGPR(OpSize::i16Bit, Mem, OpSize::i16Bit);
+  auto NewFCW = _LoadMem(GPRClass, OpSize::i16Bit, Mem, OpSize::i16Bit);
  // ignore the rounding precision, we're always 64-bit in F64.
  // extract rounding mode
  Ref roundingMode = _Bfe(OpSize::i32Bit, 3, 10, NewFCW);
  _SetRoundingMode(roundingMode, false, roundingMode);
-  _StoreContextGPR(OpSize::i16Bit, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
+  _StoreContext(OpSize::i16Bit, GPRClass, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));

-  auto NewFSW = _LoadMemGPR(Size, Mem, Constant(IR::OpSizeToSize(Size)), Size, MemOffsetType::SXTX, 1);
+  auto NewFSW = _LoadMem(GPRClass, Size, Mem, Constant(IR::OpSizeToSize(Size)), Size, MEM_OFFSET_SXTX, 1);
  ReconstructX87StateFromFSW_Helper(NewFSW);

  {
    // FTW
-    SetX87FTW(_LoadMemGPR(Size, Mem, Constant(IR::OpSizeToSize(Size) * 2), Size, MemOffsetType::SXTX, 1));
+    SetX87FTW(_LoadMem(GPRClass, Size, Mem, Constant(IR::OpSizeToSize(Size) * 2), Size, MEM_OFFSET_SXTX, 1));
  }
 }

 void OpDispatchBuilder::X87FLDCWF64(OpcodeArgs) {
  _StackForceSlow();

-  Ref NewFCW = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+  Ref NewFCW = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
  // ignore the rounding precision, we're always 64-bit in F64.
  // extract rounding mode
  Ref roundingMode = _Bfe(OpSize::i32Bit, 3, 10, NewFCW);
  _SetRoundingMode(roundingMode, false, roundingMode);
-  _StoreContextGPR(OpSize::i16Bit, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
+  _StoreContext(OpSize::i16Bit, GPRClass, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
 }

 // F64 ops
 // Float load op with memory operand
 void OpDispatchBuilder::FLDF64(OpcodeArgs, IR::OpSize Width) {
  const auto ReadWidth = (Width == OpSize::f80Bit) ? OpSize::i128Bit : Width;
-  Ref Data = LoadSourceFPR_WithOpSize(Op, Op->Src[0], Width, Op->Flags);
+  Ref Data = LoadSource_WithOpSize(FPRClass, Op, Op->Src[0], ReadWidth, Op->Flags);
  // Convert to 64bit float
  Ref ConvertedData = Data;
  if (Width == OpSize::i32Bit) {
@@ -73,7 +73,7 @@ void OpDispatchBuilder::FLDF64(OpcodeArgs, IR::OpSize Width) {

 void OpDispatchBuilder::FBLDF64(OpcodeArgs) {
  // Read from memory
-  Ref Data = LoadSourceFPR_WithOpSize(Op, Op->Src[0], OpSize::f80Bit, Op->Flags);
+  Ref Data = LoadSource_WithOpSize(FPRClass, Op, Op->Src[0], OpSize::i128Bit, Op->Flags);
  Ref ConvertedData = _F80BCDLoad(Data);
  ConvertedData = _F80CVT(OpSize::i64Bit, ConvertedData);
  _PushStack(ConvertedData, Data, OpSize::i64Bit, true);
@@ -82,7 +82,7 @@ void OpDispatchBuilder::FBLDF64(OpcodeArgs) {
 void OpDispatchBuilder::FBSTPF64(OpcodeArgs) {
  Ref converted = _F80CVTTo(_ReadStackValue(0), OpSize::i64Bit);
  converted = _F80BCDStore(converted);
-  StoreResultFPR_WithOpSize(Op, Op->Dest, converted, OpSize::f80Bit, OpSize::i8Bit);
+  StoreResult_WithOpSize(FPRClass, Op, Op->Dest, converted, OpSize::f80Bit, OpSize::i8Bit);
  _PopStackDestroy();
 }

@@ -95,7 +95,7 @@ void OpDispatchBuilder::FILDF64(OpcodeArgs) {
  const auto ReadWidth = OpSizeFromSrc(Op);

  // Read from memory
-  Ref Data = LoadSourceGPR_WithOpSize(Op, Op->Src[0], ReadWidth, Op->Flags);
+  Ref Data = LoadSource_WithOpSize(GPRClass, Op, Op->Src[0], ReadWidth, Op->Flags);
  if (ReadWidth == OpSize::i16Bit) {
    Data = _Sbfe(OpSize::i64Bit, IR::OpSizeAsBits(ReadWidth), 0, Data);
  }
@@ -112,7 +112,7 @@ void OpDispatchBuilder::FISTF64(OpcodeArgs, bool Truncate) {
  } else {
    data = _Float_ToGPR_S(Size == OpSize::i32Bit ? OpSize::i32Bit : OpSize::i64Bit, OpSize::i64Bit, data);
  }
-  StoreResultGPR_WithOpSize(Op, Op->Dest, data, Size, OpSize::i8Bit);
+  StoreResult_WithOpSize(GPRClass, Op, Op->Dest, data, Size, OpSize::i8Bit);

  if ((Op->TableInfo->Flags & X86Tables::InstFlags::FLAGS_POP) != 0) {
    _PopStackDestroy();
@@ -138,16 +138,16 @@ void OpDispatchBuilder::FADDF64(OpcodeArgs, IR::OpSize Width, bool Integer, OpDi
  Ref arg {};

  if (Integer) {
-    arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
    if (Width == OpSize::i16Bit) {
      arg = _Sbfe(OpSize::i64Bit, 16, 0, arg);
    }
    arg = _Float_FromGPR_S(OpSize::i64Bit, Width == OpSize::i64Bit ? OpSize::i64Bit : OpSize::i32Bit, arg);
  } else if (Width == OpSize::i32Bit) {
-    arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    arg = _Float_FToF(OpSize::i64Bit, OpSize::i32Bit, arg);
  } else if (Width == OpSize::i64Bit) {
-    arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  } else {
    FEX_UNREACHABLE;
  }
@@ -176,16 +176,16 @@ void OpDispatchBuilder::FMULF64(OpcodeArgs, IR::OpSize Width, bool Integer, OpDi
  Ref arg {};

  if (Integer) {
-    arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
    if (Width == OpSize::i16Bit) {
      arg = _Sbfe(OpSize::i64Bit, 16, 0, arg);
    }
    arg = _Float_FromGPR_S(OpSize::i64Bit, Width == OpSize::i64Bit ? OpSize::i64Bit : OpSize::i32Bit, arg);
  } else if (Width == OpSize::i32Bit) {
-    arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    arg = _Float_FToF(OpSize::i64Bit, OpSize::i32Bit, arg);
  } else if (Width == OpSize::i64Bit) {
-    arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+    arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
  } else {
    FEX_UNREACHABLE;
  }
@@ -228,16 +228,16 @@ void OpDispatchBuilder::FDIVF64(OpcodeArgs, IR::OpSize Width, bool Integer, bool

  if (Width == OpSize::i16Bit || Width == OpSize::i32Bit || Width == OpSize::i64Bit) {
    if (Integer) {
-      Arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+      Arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
      if (Width == OpSize::i16Bit) {
        Arg = _Sbfe(OpSize::i64Bit, 16, 0, Arg);
      }
      Arg = _Float_FromGPR_S(OpSize::i64Bit, Width == OpSize::i64Bit ? OpSize::i64Bit : OpSize::i32Bit, Arg);
    } else if (Width == OpSize::i32Bit) {
-      Arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+      Arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
      Arg = _Float_FToF(OpSize::i64Bit, OpSize::i32Bit, Arg);
    } else if (Width == OpSize::i64Bit) {
-      Arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+      Arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    }
  } else {
    FEX_UNREACHABLE;
@@ -285,16 +285,16 @@ void OpDispatchBuilder::FSUBF64(OpcodeArgs, IR::OpSize Width, bool Integer, bool

  if (Width == OpSize::i16Bit || Width == OpSize::i32Bit || Width == OpSize::i64Bit) {
    if (Integer) {
-      arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+      arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
      if (Width == OpSize::i16Bit) {
        arg = _Sbfe(OpSize::i64Bit, 16, 0, arg);
      }
      arg = _Float_FromGPR_S(OpSize::i64Bit, Width == OpSize::i64Bit ? OpSize::i64Bit : OpSize::i32Bit, arg);
    } else if (Width == OpSize::i32Bit) {
-      arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+      arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
      arg = _Float_FToF(OpSize::i64Bit, OpSize::i32Bit, arg);
    } else if (Width == OpSize::i64Bit) {
-      arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+      arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    }
  } else {
    FEX_UNREACHABLE;
@@ -332,16 +332,16 @@ void OpDispatchBuilder::FCOMIF64(OpcodeArgs, IR::OpSize Width, bool Integer, OpD
  } else if (Width == OpSize::i16Bit || Width == OpSize::i32Bit || Width == OpSize::i64Bit) {
    // Memory arg
    if (Integer) {
-      arg = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
+      arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags);
      if (Width == OpSize::i16Bit) {
        arg = _Sbfe(OpSize::i64Bit, 16, 0, arg);
      }
      b = _Float_FromGPR_S(OpSize::i64Bit, Width == OpSize::i64Bit ? OpSize::i64Bit : OpSize::i32Bit, arg);
    } else if (Width == OpSize::i32Bit) {
-      arg = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+      arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
      b = _Float_FToF(OpSize::i64Bit, OpSize::i32Bit, arg);
    } else if (Width == OpSize::i64Bit) {
-      b = LoadSourceFPR(Op, Op->Src[0], Op->Flags);
+      b = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags);
    }
  } else {
    FEX_UNREACHABLE;
@@ -382,7 +382,7 @@ void OpDispatchBuilder::X87FXTRACTF64(OpcodeArgs) {

  // non zero case
  Ref ExpNZ = _Bfe(OpSize::i64Bit, 11, 52, Gpr);
-  ExpNZ = Sub(OpSize::i64Bit, ExpNZ, Constant(1023));
+  ExpNZ = _Sub(OpSize::i64Bit, ExpNZ, Constant(1023));
  Ref ExpNZV = _Float_FromGPR_S(OpSize::i64Bit, OpSize::i64Bit, ExpNZ);

  Ref SigNZ = _And(OpSize::i64Bit, Gpr, Constant(0x800f'ffff'ffff'ffffLL));
@@ -393,8 +393,8 @@ void OpDispatchBuilder::X87FXTRACTF64(OpcodeArgs) {
  SaveNZCV();
  _TestNZ(OpSize::i64Bit, Gpr, Constant(0x7fff'ffff'ffff'ffffUL));

-  Ref Sig = _NZCVSelectV(OpSize::i64Bit, CondClass::EQ, SigZV, SigNZV);
-  Ref Exp = _NZCVSelectV(OpSize::i64Bit, CondClass::EQ, ExpZV, ExpNZV);
+  Ref Sig = _NZCVSelectV(OpSize::i64Bit, {COND_EQ}, SigZV, SigNZV);
+  Ref Exp = _NZCVSelectV(OpSize::i64Bit, {COND_EQ}, ExpZV, ExpNZV);

  _PopStackDestroy();
  _PushStack(Exp, Exp, OpSize::i64Bit, true);
@@ -33,7 +33,7 @@ X86GeneratedCode::X86GeneratedCode() {

  CallbackReturn = reinterpret_cast<uint64_t>(CodePtr);

-  memcpy(reinterpret_cast<void*>(CallbackReturn), SignalReturnCode.data(), SignalReturnCode.size());
+  memcpy(reinterpret_cast<void*>(CallbackReturn), &SignalReturnCode.at(0), SignalReturnCode.size());

  mprotect(CodePtr, CODE_SIZE, PROT_READ);
 #endif
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: MIT
+/*
+$info$
+meta: frontend|x86-tables ~ Metadata that drives the frontend x86/64 decoding
+tags: frontend|x86-tables
+$end_info$
+*/
+
+#include "Interface/Core/X86Tables/X86Tables.h"
+
+#include <FEXCore/Core/Context.h>
+
+namespace FEXCore::X86Tables {
+
+void InitializeBaseTables(Context::OperatingMode Mode);
+void InitializeSecondaryTables(Context::OperatingMode Mode);
+void InitializeSecondaryGroupTables(Context::OperatingMode Mode);
+void InitializePrimaryGroupTables(Context::OperatingMode Mode);
+void InitializeH0F3ATables(Context::OperatingMode Mode);
+
+void InitializeInfoTables(Context::OperatingMode Mode) {
+  InitializeBaseTables(Mode);
+  InitializeSecondaryTables(Mode);
+  InitializeSecondaryGroupTables(Mode);
+  InitializePrimaryGroupTables(Mode);
+  InitializeH0F3ATables(Mode);
+}
+
+} // namespace FEXCore::X86Tables
@@ -15,425 +15,300 @@ $end_info$
 namespace FEXCore::X86Tables {
 using namespace InstFlags;

-enum Primary_LUT {
-  ENTRY_06,
-  ENTRY_07,
-  ENTRY_0E,
-  ENTRY_16,
-  ENTRY_17,
-  ENTRY_1E,
-  ENTRY_1F,
-  ENTRY_27,
-  ENTRY_2F,
-  ENTRY_37,
-  ENTRY_3F,
-  ENTRY_40,
-  ENTRY_48,
-  ENTRY_60,
-  ENTRY_61,
-  ENTRY_63,
-  ENTRY_9A,
-  ENTRY_A0,
-  ENTRY_A1,
-  ENTRY_A2,
-  ENTRY_A3,
-  ENTRY_CE,
-  ENTRY_D4,
-  ENTRY_D5,
-  ENTRY_D6,
-  ENTRY_EA,
-  ENTRY_MAX,
-};
-
-constexpr std::array<X86InstInfo[2], ENTRY_MAX> Primary_ArchSelect_LUT = {{
-  // ENTRY_06
-  {
-    {"PUSH ES",  TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::Bind<&IR::OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_ES_PREFIX> } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_07
-  {
-    {"POP ES",   TYPE_INST, GenFlagsSizes(SIZE_16BIT, SIZE_DEF) | FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::Bind<&IR::OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_ES_PREFIX> } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_0E
-  {
-    {"PUSH CS",  TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::Bind<&IR::OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_CS_PREFIX> } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_16
-  {
-    {"PUSH SS",  TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::Bind<&IR::OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_SS_PREFIX> } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_17
-  {
-    {"POP SS",   TYPE_INST, GenFlagsSizes(SIZE_16BIT, SIZE_DEF) | FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::Bind<&IR::OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_SS_PREFIX> } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_1E
-  {
-    {"PUSH DS",  TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::Bind<&IR::OpDispatchBuilder::PUSHSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_DS_PREFIX> } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_1F
-  {
-    {"POP DS",   TYPE_INST, GenFlagsSizes(SIZE_16BIT, SIZE_DEF) | FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::Bind<&IR::OpDispatchBuilder::POPSegmentOp, FEXCore::X86Tables::DecodeFlags::FLAG_DS_PREFIX> } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_27
-  {
-    {"DAA",      TYPE_INST, GenFlagsDstSize(SIZE_8BIT) | FLAGS_SF_DST_RAX, 0, { .OpDispatch = &IR::OpDispatchBuilder::DAAOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_2F
-  {
-    {"DAS",      TYPE_INST, GenFlagsDstSize(SIZE_8BIT) | FLAGS_SF_DST_RAX, 0, { .OpDispatch = &IR::OpDispatchBuilder::DASOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_37
-  {
-    {"AAA",      TYPE_INST, GenFlagsDstSize(SIZE_16BIT) | FLAGS_SF_DST_RAX, 0, { .OpDispatch = &IR::OpDispatchBuilder::AAAOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_3F
-  {
-    {"AAS",      TYPE_INST, GenFlagsDstSize(SIZE_16BIT) | FLAGS_SF_DST_RAX, 0, { .OpDispatch = &IR::OpDispatchBuilder::AASOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_40
-  {
-    {"INC",    TYPE_INST, FLAGS_SF_REX_IN_BYTE, 0, { .OpDispatch = &IR::OpDispatchBuilder::INCOp } },
-    // REX
-    {"", TYPE_REX_PREFIX, FLAGS_NONE, 0},
-  },
-  // ENTRY_48
-  {
-    {"DEC",    TYPE_INST, FLAGS_SF_REX_IN_BYTE, 0, { .OpDispatch = &IR::OpDispatchBuilder::DECOp } },
-    {"", TYPE_REX_PREFIX, FLAGS_NONE, 0},
-  },
-  // ENTRY_60
-  {
-    {"PUSHA",  TYPE_INST, FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::PUSHAOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_61
-  {
-    {"POPA",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS, 0, { .OpDispatch = &IR::OpDispatchBuilder::POPAOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_63
-  {
-    {"ARPL",   TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-    {"MOVSXD", TYPE_INST, GenFlagsDstSize(SIZE_64BIT) | FLAGS_MODRM, 0, { .OpDispatch = &IR::OpDispatchBuilder::MOVSXDOp } },
-  },
-  // ENTRY_9A
-  {
-    {"CALLF",  TYPE_INST, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_A0
-  {
-    {"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX | FLAGS_MEM_OFFSET, 4, { .OpDispatch = &IR::OpDispatchBuilder::MOVOffsetOp } },
-    {"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX | FLAGS_MEM_OFFSET, 8, { .OpDispatch = &IR::OpDispatchBuilder::MOVOffsetOp } },
-  },
-  // ENTRY_A1
-  {
-    {"MOV",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_MEM_OFFSET, 4, { .OpDispatch = &IR::OpDispatchBuilder::MOVOffsetOp } },
-    {"MOV",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_MEM_OFFSET, 8, { .OpDispatch = &IR::OpDispatchBuilder::MOVOffsetOp } },
-  },
-  // ENTRY_A2
-  {
-    {"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_SRC_RAX | FLAGS_MEM_OFFSET, 4, { .OpDispatch = &IR::OpDispatchBuilder::MOVOffsetOp } },
-    {"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_SRC_RAX | FLAGS_MEM_OFFSET, 8, { .OpDispatch = &IR::OpDispatchBuilder::MOVOffsetOp } },
-  },
-  // ENTRY_A3
-  {
-    {"MOV",    TYPE_INST, FLAGS_SF_SRC_RAX | FLAGS_MEM_OFFSET, 4, { .OpDispatch = &IR::OpDispatchBuilder::MOVOffsetOp } },
-    {"MOV",    TYPE_INST, FLAGS_SF_SRC_RAX | FLAGS_MEM_OFFSET, 8, { .OpDispatch = &IR::OpDispatchBuilder::MOVOffsetOp } },
-  },
-  // ENTRY_CE
-  {
-    {"INTO",   TYPE_INST, FLAGS_NONE, 0, { .OpDispatch = &IR::OpDispatchBuilder::INTOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_D4
-  {
-    {"AAM",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX, 1, { .OpDispatch = &IR::OpDispatchBuilder::AAMOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_D5
-  {
-    {"AAD",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX, 1, { .OpDispatch = &IR::OpDispatchBuilder::AADOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_D6
-  {
-    {"SALC",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX | FLAGS_SF_SRC_RAX, 0, { .OpDispatch = &IR::OpDispatchBuilder::SALCOp } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-  // ENTRY_EA
-  {
-    {"JMPF",   TYPE_INST, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-    {"", TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
-  },
-}};
-
-const std::array<X86InstInfo, MAX_PRIMARY_TABLE_SIZE> BaseOps = []() consteval {
+std::array<X86InstInfo, MAX_PRIMARY_TABLE_SIZE> BaseOps = []() consteval {
  std::array<X86InstInfo, MAX_PRIMARY_TABLE_SIZE> Table{};

  constexpr U8U8InfoStruct BaseOpTable[] = {
    // Prefixes
    // Operand size overide
-    {0x66, 1, X86InstInfo{"",      TYPE_PREFIX, FLAGS_NONE,        0}},
+    {0x66, 1, X86InstInfo{"",      TYPE_PREFIX, FLAGS_NONE,        0, nullptr}},
    // Address size override
-    {0x67, 1, X86InstInfo{"",      TYPE_PREFIX, FLAGS_NONE,        0}},
-    {0x26, 1, X86InstInfo{"ES",    TYPE_LEGACY_PREFIX, FLAGS_NONE, 0}},
-    {0x2E, 1, X86InstInfo{"CS",    TYPE_LEGACY_PREFIX, FLAGS_NONE, 0}},
-    {0x36, 1, X86InstInfo{"SS",    TYPE_LEGACY_PREFIX, FLAGS_NONE, 0}},
-    {0x3E, 1, X86InstInfo{"DS",    TYPE_LEGACY_PREFIX, FLAGS_NONE, 0}},
+    {0x67, 1, X86InstInfo{"",      TYPE_PREFIX, FLAGS_NONE,        0, nullptr}},
+    {0x26, 1, X86InstInfo{"ES",    TYPE_LEGACY_PREFIX, FLAGS_NONE, 0, nullptr}},
+    {0x2E, 1, X86InstInfo{"CS",    TYPE_LEGACY_PREFIX, FLAGS_NONE, 0, nullptr}},
+    {0x36, 1, X86InstInfo{"SS",    TYPE_LEGACY_PREFIX, FLAGS_NONE, 0, nullptr}},
+    {0x3E, 1, X86InstInfo{"DS",    TYPE_LEGACY_PREFIX, FLAGS_NONE, 0, nullptr}},
    // These are still invalid on 64bit
-    {0x64, 1, X86InstInfo{"FS",    TYPE_PREFIX, FLAGS_NONE,        0}},
-    {0x65, 1, X86InstInfo{"GS",    TYPE_PREFIX, FLAGS_NONE,        0}},
-    {0xF0, 1, X86InstInfo{"LOCK",  TYPE_PREFIX, FLAGS_NONE,        0}},
-    {0xF2, 1, X86InstInfo{"REPNE", TYPE_PREFIX, FLAGS_NONE,        0}},
-    {0xF3, 1, X86InstInfo{"REP",   TYPE_PREFIX, FLAGS_NONE,        0}},
+    {0x64, 1, X86InstInfo{"FS",    TYPE_PREFIX, FLAGS_NONE,        0, nullptr}},
+    {0x65, 1, X86InstInfo{"GS",    TYPE_PREFIX, FLAGS_NONE,        0, nullptr}},
+    {0xF0, 1, X86InstInfo{"LOCK",  TYPE_PREFIX, FLAGS_NONE,        0, nullptr}},
+    {0xF2, 1, X86InstInfo{"REPNE", TYPE_PREFIX, FLAGS_NONE,        0, nullptr}},
+    {0xF3, 1, X86InstInfo{"REP",   TYPE_PREFIX, FLAGS_NONE,        0, nullptr}},

    // Instructions
-    {0x00, 1, X86InstInfo{"ADD",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0}},
-    {0x01, 1, X86InstInfo{"ADD",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_DISPLACE_SIZE_DIV_2,                                       0}},
-    {0x02, 1, X86InstInfo{"ADD",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0}},
-    {0x03, 1, X86InstInfo{"ADD",    TYPE_INST, FLAGS_MODRM,                                                                   0}},
-    {0x04, 1, X86InstInfo{"ADD",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1}},
-    {0x05, 1, X86InstInfo{"ADD",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4}},
+    {0x00, 1, X86InstInfo{"ADD",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0, nullptr}},
+    {0x01, 1, X86InstInfo{"ADD",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_DISPLACE_SIZE_DIV_2,                                       0, nullptr}},
+    {0x02, 1, X86InstInfo{"ADD",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0, nullptr}},
+    {0x03, 1, X86InstInfo{"ADD",    TYPE_INST, FLAGS_MODRM,                                                                   0, nullptr}},
+    {0x04, 1, X86InstInfo{"ADD",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1, nullptr}},
+    {0x05, 1, X86InstInfo{"ADD",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4, nullptr}},

-    {0x06, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_06] }}},
-    {0x07, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_07] }}},
+    {0x08, 1, X86InstInfo{"OR",     TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0, nullptr}},
+    {0x09, 1, X86InstInfo{"OR",     TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0, nullptr}},
+    {0x0A, 1, X86InstInfo{"OR",     TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0, nullptr}},
+    {0x0B, 1, X86InstInfo{"OR",     TYPE_INST, FLAGS_MODRM,                                                                   0, nullptr}},
+    {0x0C, 1, X86InstInfo{"OR",     TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX ,                              1, nullptr}},
+    {0x0D, 1, X86InstInfo{"OR",     TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4, nullptr}},

-    {0x08, 1, X86InstInfo{"OR",     TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0}},
-    {0x09, 1, X86InstInfo{"OR",     TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0}},
-    {0x0A, 1, X86InstInfo{"OR",     TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0}},
-    {0x0B, 1, X86InstInfo{"OR",     TYPE_INST, FLAGS_MODRM,                                                                   0}},
-    {0x0C, 1, X86InstInfo{"OR",     TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX ,                              1}},
-    {0x0D, 1, X86InstInfo{"OR",     TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4}},
-    {0x0E, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_0E] }}},
+    {0x10, 1, X86InstInfo{"ADC",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0, nullptr}},
+    {0x11, 1, X86InstInfo{"ADC",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_DISPLACE_SIZE_DIV_2,                                       0, nullptr}},
+    {0x12, 1, X86InstInfo{"ADC",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0, nullptr}},
+    {0x13, 1, X86InstInfo{"ADC",    TYPE_INST, FLAGS_MODRM,                                                                   0, nullptr}},
+    {0x14, 1, X86InstInfo{"ADC",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1, nullptr}},
+    {0x15, 1, X86InstInfo{"ADC",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4, nullptr}},

-    {0x10, 1, X86InstInfo{"ADC",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0}},
-    {0x11, 1, X86InstInfo{"ADC",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_DISPLACE_SIZE_DIV_2,                                       0}},
-    {0x12, 1, X86InstInfo{"ADC",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0}},
-    {0x13, 1, X86InstInfo{"ADC",    TYPE_INST, FLAGS_MODRM,                                                                   0}},
-    {0x14, 1, X86InstInfo{"ADC",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1}},
-    {0x15, 1, X86InstInfo{"ADC",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4}},
-    {0x16, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_16] }}},
-    {0x17, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_17] }}},
+    {0x18, 1, X86InstInfo{"SBB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0, nullptr}},
+    {0x19, 1, X86InstInfo{"SBB",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_DISPLACE_SIZE_DIV_2,                                       0, nullptr}},
+    {0x1A, 1, X86InstInfo{"SBB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0, nullptr}},
+    {0x1B, 1, X86InstInfo{"SBB",    TYPE_INST, FLAGS_MODRM,                                                                   0, nullptr}},
+    {0x1C, 1, X86InstInfo{"SBB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1, nullptr}},
+    {0x1D, 1, X86InstInfo{"SBB",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4, nullptr}},

-    {0x18, 1, X86InstInfo{"SBB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0}},
-    {0x19, 1, X86InstInfo{"SBB",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_DISPLACE_SIZE_DIV_2,                                       0}},
-    {0x1A, 1, X86InstInfo{"SBB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0}},
-    {0x1B, 1, X86InstInfo{"SBB",    TYPE_INST, FLAGS_MODRM,                                                                   0}},
-    {0x1C, 1, X86InstInfo{"SBB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1}},
-    {0x1D, 1, X86InstInfo{"SBB",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4}},
-    {0x1E, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_1E] }}},
-    {0x1F, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_1F] }}},
+    {0x20, 1, X86InstInfo{"AND",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0, nullptr}},
+    {0x21, 1, X86InstInfo{"AND",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0, nullptr}},
+    {0x22, 1, X86InstInfo{"AND",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0, nullptr}},
+    {0x23, 1, X86InstInfo{"AND",    TYPE_INST, FLAGS_MODRM,                                                                   0, nullptr}},
+    {0x24, 1, X86InstInfo{"AND",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1, nullptr}},
+    {0x25, 1, X86InstInfo{"AND",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4, nullptr}},

-    {0x20, 1, X86InstInfo{"AND",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0}},
-    {0x21, 1, X86InstInfo{"AND",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0}},
-    {0x22, 1, X86InstInfo{"AND",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0}},
-    {0x23, 1, X86InstInfo{"AND",    TYPE_INST, FLAGS_MODRM,                                                                   0}},
-    {0x24, 1, X86InstInfo{"AND",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1}},
-    {0x25, 1, X86InstInfo{"AND",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4}},
+    {0x28, 1, X86InstInfo{"SUB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0, nullptr}},
+    {0x29, 1, X86InstInfo{"SUB",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0, nullptr}},
+    {0x2A, 1, X86InstInfo{"SUB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0, nullptr}},
+    {0x2B, 1, X86InstInfo{"SUB",    TYPE_INST, FLAGS_MODRM,                                                                   0, nullptr}},
+    {0x2C, 1, X86InstInfo{"SUB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX ,                              1, nullptr}},
+    {0x2D, 1, X86InstInfo{"SUB",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4, nullptr}},

-    {0x27, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_27] }}},
-    {0x28, 1, X86InstInfo{"SUB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0}},
-    {0x29, 1, X86InstInfo{"SUB",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0}},
-    {0x2A, 1, X86InstInfo{"SUB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0}},
-    {0x2B, 1, X86InstInfo{"SUB",    TYPE_INST, FLAGS_MODRM,                                                                   0}},
-    {0x2C, 1, X86InstInfo{"SUB",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX ,                              1}},
-    {0x2D, 1, X86InstInfo{"SUB",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4}},
-    {0x2F, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_2F] }}},
+    {0x30, 1, X86InstInfo{"XOR",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0, nullptr}},
+    {0x31, 1, X86InstInfo{"XOR",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0, nullptr}},
+    {0x32, 1, X86InstInfo{"XOR",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0, nullptr}},
+    {0x33, 1, X86InstInfo{"XOR",    TYPE_INST, FLAGS_MODRM,                                                                   0, nullptr}},
+    {0x34, 1, X86InstInfo{"XOR",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1, nullptr}},
+    {0x35, 1, X86InstInfo{"XOR",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4, nullptr}},

-    {0x30, 1, X86InstInfo{"XOR",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0}},
-    {0x31, 1, X86InstInfo{"XOR",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0}},
-    {0x32, 1, X86InstInfo{"XOR",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0}},
-    {0x33, 1, X86InstInfo{"XOR",    TYPE_INST, FLAGS_MODRM,                                                                   0}},
-    {0x34, 1, X86InstInfo{"XOR",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1}},
-    {0x35, 1, X86InstInfo{"XOR",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4}},
+    {0x38, 1, X86InstInfo{"CMP",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0, nullptr}},
+    {0x39, 1, X86InstInfo{"CMP",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0, nullptr}},
+    {0x3A, 1, X86InstInfo{"CMP",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0, nullptr}},
+    {0x3B, 1, X86InstInfo{"CMP",    TYPE_INST, FLAGS_MODRM,                                                                   0, nullptr}},
+    {0x3C, 1, X86InstInfo{"CMP",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1, nullptr}},
+    {0x3D, 1, X86InstInfo{"CMP",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4, nullptr}},

-    {0x37, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_37] }}},
-    {0x38, 1, X86InstInfo{"CMP",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                   0}},
-    {0x39, 1, X86InstInfo{"CMP",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                                                                   0}},
-    {0x3A, 1, X86InstInfo{"CMP",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,                                                   0}},
-    {0x3B, 1, X86InstInfo{"CMP",    TYPE_INST, FLAGS_MODRM,                                                                   0}},
-    {0x3C, 1, X86InstInfo{"CMP",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX  ,                              1}},
-    {0x3D, 1, X86InstInfo{"CMP",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2, 4}},
-    {0x3F, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_3F] }}},
+    {0x50, 8, X86InstInfo{"PUSH",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SF_REX_IN_BYTE | FLAGS_DEBUG_MEM_ACCESS ,                    0, nullptr}},
+    {0x58, 8, X86InstInfo{"POP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SF_REX_IN_BYTE | FLAGS_DEBUG_MEM_ACCESS ,                    0, nullptr}},

-    {0x40, 8, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_40] }}},
-    {0x48, 8, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_48] }}},
+    {0x62, 1, X86InstInfo{"",       TYPE_GROUP_EVEX, FLAGS_NONE,                                                                           0, nullptr}},

-    {0x50, 8, X86InstInfo{"PUSH",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SF_REX_IN_BYTE | FLAGS_DEBUG_MEM_ACCESS ,                    0}},
-    {0x58, 8, X86InstInfo{"POP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SF_REX_IN_BYTE | FLAGS_DEBUG_MEM_ACCESS ,                    0}},
-
-
-    {0x60, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_60] }}},
-    {0x61, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_61] }}},
-    {0x62, 1, X86InstInfo{"",       TYPE_GROUP_EVEX, FLAGS_NONE,                                                                           0}},
-    {0x63, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_63] }}},
-
-    {0x68, 1, X86InstInfo{"PUSH",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_DEBUG_MEM_ACCESS | FLAGS_DISPLACE_SIZE_DIV_2 | FLAGS_SRC_SEXT, 4}},
-    {0x69, 1, X86InstInfo{"IMUL",   TYPE_INST, FLAGS_MODRM | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2,        4}},
-    {0x6A, 1, X86InstInfo{"PUSH",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_DEBUG_MEM_ACCESS | FLAGS_SRC_SEXT ,            1}},
-    {0x6B, 1, X86InstInfo{"IMUL",   TYPE_INST, FLAGS_MODRM | FLAGS_SRC_SEXT ,                                    1}},
+    {0x68, 1, X86InstInfo{"PUSH",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_DEBUG_MEM_ACCESS | FLAGS_DISPLACE_SIZE_DIV_2 | FLAGS_SRC_SEXT, 4, nullptr}},
+    {0x69, 1, X86InstInfo{"IMUL",   TYPE_INST, FLAGS_MODRM | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2,        4, nullptr}},
+    {0x6A, 1, X86InstInfo{"PUSH",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_DEBUG_MEM_ACCESS | FLAGS_SRC_SEXT ,            1, nullptr}},
+    {0x6B, 1, X86InstInfo{"IMUL",   TYPE_INST, FLAGS_MODRM | FLAGS_SRC_SEXT ,                                    1, nullptr}},

    // This should just throw a GP
-    {0x6C, 1, X86InstInfo{"INSB",   TYPE_INST, FLAGS_BLOCK_END, 0}},
-    {0x6D, 1, X86InstInfo{"INSW",   TYPE_INST, FLAGS_BLOCK_END, 0}},
-    {0x6E, 1, X86InstInfo{"OUTS",   TYPE_INST, FLAGS_BLOCK_END, 0}},
-    {0x6F, 1, X86InstInfo{"OUTS",   TYPE_INST, FLAGS_BLOCK_END, 0}},
+    {0x6C, 1, X86InstInfo{"INSB",   TYPE_INST, FLAGS_BLOCK_END, 0, nullptr}},
+    {0x6D, 1, X86InstInfo{"INSW",   TYPE_INST, FLAGS_BLOCK_END, 0, nullptr}},
+    {0x6E, 1, X86InstInfo{"OUTS",   TYPE_INST, FLAGS_BLOCK_END, 0, nullptr}},
+    {0x6F, 1, X86InstInfo{"OUTS",   TYPE_INST, FLAGS_BLOCK_END, 0, nullptr}},

-    {0x70, 1, X86InstInfo{"JO",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x71, 1, X86InstInfo{"JNO",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x72, 1, X86InstInfo{"JB",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x73, 1, X86InstInfo{"JNB",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x74, 1, X86InstInfo{"JZ",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x75, 1, X86InstInfo{"JNZ",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x76, 1, X86InstInfo{"JBE",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x77, 1, X86InstInfo{"JNBE",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x78, 1, X86InstInfo{"JS",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x79, 1, X86InstInfo{"JNS",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x7A, 1, X86InstInfo{"JP",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x7B, 1, X86InstInfo{"JNP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x7C, 1, X86InstInfo{"JL",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x7D, 1, X86InstInfo{"JNL",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x7E, 1, X86InstInfo{"JLE",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
-    {0x7F, 1, X86InstInfo{"JNLE",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1}},
+    {0x70, 1, X86InstInfo{"JO",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x71, 1, X86InstInfo{"JNO",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x72, 1, X86InstInfo{"JB",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x73, 1, X86InstInfo{"JNB",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x74, 1, X86InstInfo{"JZ",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x75, 1, X86InstInfo{"JNZ",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x76, 1, X86InstInfo{"JBE",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x77, 1, X86InstInfo{"JNBE",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x78, 1, X86InstInfo{"JS",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x79, 1, X86InstInfo{"JNS",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x7A, 1, X86InstInfo{"JP",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x7B, 1, X86InstInfo{"JNP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x7C, 1, X86InstInfo{"JL",     TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x7D, 1, X86InstInfo{"JNL",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x7E, 1, X86InstInfo{"JLE",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},
+    {0x7F, 1, X86InstInfo{"JNLE",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT , 1, nullptr}},

-    {0x84, 1, X86InstInfo{"TEST",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,         0}},
-    {0x85, 1, X86InstInfo{"TEST",   TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                         0}},
-    {0x86, 1, X86InstInfo{"XCHG",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,         0}},
-    {0x87, 1, X86InstInfo{"XCHG",   TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                         0}},
+    {0x84, 1, X86InstInfo{"TEST",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,         0, nullptr}},
+    {0x85, 1, X86InstInfo{"TEST",   TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                         0, nullptr}},
+    {0x86, 1, X86InstInfo{"XCHG",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,         0, nullptr}},
+    {0x87, 1, X86InstInfo{"XCHG",   TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                         0, nullptr}},

-    {0x88, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,         0}},
-    {0x89, 1, X86InstInfo{"MOV",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                         0}},
-    {0x8A, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,         0}},
-    {0x8B, 1, X86InstInfo{"MOV",    TYPE_INST, FLAGS_MODRM,                         0}},
-    {0x8C, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                      0}},
-    {0x8D, 1, X86InstInfo{"LEA",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_MODRM,                         0}},
-    {0x8E, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_16BIT) | FLAGS_MODRM,                      0}},
-    {0x8F, 1, X86InstInfo{"POP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_SF_MOD_ZERO_REG | FLAGS_DEBUG_MEM_ACCESS, 0}},
-    {0x90, 8, X86InstInfo{"XCHG",   TYPE_INST, FLAGS_SF_REX_IN_BYTE | FLAGS_SF_SRC_RAX, 0}},
-    {0x98, 1, X86InstInfo{"CDQE",   TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SF_SRC_RAX,     0}},
-    {0x99, 1, X86InstInfo{"CQO",    TYPE_INST, FLAGS_SF_DST_RDX | FLAGS_SF_SRC_RAX,     0}},
+    {0x88, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,         0, nullptr}},
+    {0x89, 1, X86InstInfo{"MOV",    TYPE_INST, FLAGS_MODRM | FLAGS_SF_MOD_DST,                         0, nullptr}},
+    {0x8A, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_MODRM,         0, nullptr}},
+    {0x8B, 1, X86InstInfo{"MOV",    TYPE_INST, FLAGS_MODRM,                         0, nullptr}},
+    {0x8C, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST,                      0, nullptr}},
+    {0x8D, 1, X86InstInfo{"LEA",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_MODRM,                         0, nullptr}},
+    {0x8E, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_16BIT) | FLAGS_MODRM,                      0, nullptr}},
+    {0x8F, 1, X86InstInfo{"POP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_MODRM | FLAGS_SF_MOD_DST | FLAGS_SF_MOD_ZERO_REG | FLAGS_DEBUG_MEM_ACCESS, 0, nullptr}},
+    {0x90, 8, X86InstInfo{"XCHG",   TYPE_INST, FLAGS_SF_REX_IN_BYTE | FLAGS_SF_SRC_RAX, 0, nullptr}},
+    {0x98, 1, X86InstInfo{"CDQE",   TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SF_SRC_RAX,     0, nullptr}},
+    {0x99, 1, X86InstInfo{"CQO",    TYPE_INST, FLAGS_SF_DST_RDX | FLAGS_SF_SRC_RAX,     0, nullptr}},

    // These three are all X87 instructions
-    {0x9B, 1, X86InstInfo{"FWAIT",  TYPE_INST, FLAGS_NONE,                              0}},
-    {0x9C, 1, X86InstInfo{"PUSHF",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF),         0}},
-    {0x9D, 1, X86InstInfo{"POPF",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_BLOCK_END,         0}},
+    {0x9B, 1, X86InstInfo{"FWAIT",  TYPE_INST, FLAGS_NONE,                              0, nullptr}},
+    {0x9C, 1, X86InstInfo{"PUSHF",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF),         0, nullptr}},
+    {0x9D, 1, X86InstInfo{"POPF",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_BLOCK_END,         0, nullptr}},

-    {0x9E, 1, X86InstInfo{"SAHF",   TYPE_INST, FLAGS_NONE,                              0}},
-    {0x9F, 1, X86InstInfo{"LAHF",   TYPE_INST, FLAGS_NONE,                              0}},
+    {0x9E, 1, X86InstInfo{"SAHF",   TYPE_INST, FLAGS_NONE,                              0, nullptr}},
+    {0x9F, 1, X86InstInfo{"LAHF",   TYPE_INST, FLAGS_NONE,                              0, nullptr}},

-    {0xA0, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_A0] }}},
-    {0xA1, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_A1] }}},
-    {0xA2, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_A2] }}},
-    {0xA3, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_A3] }}},
+    {0xA4, 1, X86InstInfo{"MOVSB",  TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_DEBUG_MEM_ACCESS,                                            0, nullptr}},
+    {0xA5, 1, X86InstInfo{"MOVS",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS,                                                            0, nullptr}},
+    {0xA6, 1, X86InstInfo{"CMPSB",  TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_DEBUG_MEM_ACCESS,                                            0, nullptr}},
+    {0xA7, 1, X86InstInfo{"CMPS",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS,                                                            0, nullptr}},

-    {0xA4, 1, X86InstInfo{"MOVSB",  TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_DEBUG_MEM_ACCESS,                                            0}},
-    {0xA5, 1, X86InstInfo{"MOVS",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS,                                                            0}},
-    {0xA6, 1, X86InstInfo{"CMPSB",  TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_DEBUG_MEM_ACCESS,                                            0}},
-    {0xA7, 1, X86InstInfo{"CMPS",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS,                                                            0}},
+    {0xA8, 1, X86InstInfo{"TEST",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX ,                                             1, nullptr}},
+    {0xA9, 1, X86InstInfo{"TEST",   TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2,                4, nullptr}},
+    {0xAA, 1, X86InstInfo{"STOS",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_DEBUG_MEM_ACCESS | FLAGS_SF_SRC_RAX,                   0, nullptr}},
+    {0xAB, 1, X86InstInfo{"STOS",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS | FLAGS_SF_SRC_RAX,                                   0, nullptr}},
+    {0xAC, 1, X86InstInfo{"LODS",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX | FLAGS_DEBUG_MEM_ACCESS,                                                      0, nullptr}},
+    {0xAD, 1, X86InstInfo{"LODS",   TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_DEBUG_MEM_ACCESS,                                                      0, nullptr}},
+    {0xAE, 1, X86InstInfo{"SCAS",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_DEBUG_MEM_ACCESS | FLAGS_SF_SRC_RAX,                                   0, nullptr}},
+    {0xAF, 1, X86InstInfo{"SCAS",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS | FLAGS_SF_SRC_RAX,                                   0, nullptr}},

-    {0xA8, 1, X86InstInfo{"TEST",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX ,                                             1}},
-    {0xA9, 1, X86InstInfo{"TEST",   TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2,                4}},
-    {0xAA, 1, X86InstInfo{"STOS",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_DEBUG_MEM_ACCESS | FLAGS_SF_SRC_RAX,                   0}},
-    {0xAB, 1, X86InstInfo{"STOS",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS | FLAGS_SF_SRC_RAX,                                   0}},
-    {0xAC, 1, X86InstInfo{"LODS",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX | FLAGS_DEBUG_MEM_ACCESS,                                                      0}},
-    {0xAD, 1, X86InstInfo{"LODS",   TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_DEBUG_MEM_ACCESS,                                                      0}},
-    {0xAE, 1, X86InstInfo{"SCAS",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_DEBUG_MEM_ACCESS | FLAGS_SF_SRC_RAX,                                   0}},
-    {0xAF, 1, X86InstInfo{"SCAS",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS | FLAGS_SF_SRC_RAX,                                   0}},
+    {0xB0, 8, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_REX_IN_BYTE ,                                         1, nullptr}},
+    {0xB8, 8, X86InstInfo{"MOV",    TYPE_INST, FLAGS_SF_REX_IN_BYTE | FLAGS_DISPLACE_SIZE_DIV_2 | FLAGS_DISPLACE_SIZE_MUL_2, 4, nullptr}},

-    {0xB0, 8, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_REX_IN_BYTE ,                                         1}},
-    {0xB8, 8, X86InstInfo{"MOV",    TYPE_INST, FLAGS_SF_REX_IN_BYTE | FLAGS_DISPLACE_SIZE_DIV_2 | FLAGS_DISPLACE_SIZE_MUL_2, 4}},
+    {0xC2, 1, X86InstInfo{"RET",    TYPE_INST, FLAGS_SETS_RIP | FLAGS_BLOCK_END,                                             2, nullptr}},
+    {0xC3, 1, X86InstInfo{"RET",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_BLOCK_END ,                                                0, nullptr}},
+    {0xC8, 1, X86InstInfo{"ENTER",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_DEBUG_MEM_ACCESS ,                                      3, nullptr}},
+    {0xC9, 1, X86InstInfo{"LEAVE",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_DEBUG_MEM_ACCESS ,                                                0, nullptr}},
+    {0xCA, 2, X86InstInfo{"RETF",   TYPE_PRIV, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_BLOCK_END,                                                              0, nullptr}},
+    {0xCC, 1, X86InstInfo{"INT3",   TYPE_INST, FLAGS_BLOCK_END,                                                                                      0, nullptr}},
+    {0xCD, 1, X86InstInfo{"INT",    TYPE_INST, DEFAULT_SYSCALL_FLAGS,                                                                  1, nullptr}},
+    {0xCF, 1, X86InstInfo{"IRET",   TYPE_INST, FLAGS_SETS_RIP | FLAGS_BLOCK_END,                                                                                    0, nullptr}},

-    {0xC2, 1, X86InstInfo{"RET",    TYPE_INST, FLAGS_SETS_RIP | FLAGS_BLOCK_END,                                             2}},
-    {0xC3, 1, X86InstInfo{"RET",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_BLOCK_END ,                                                0}},
-    {0xC8, 1, X86InstInfo{"ENTER",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_DEBUG_MEM_ACCESS ,                                      3}},
-    {0xC9, 1, X86InstInfo{"LEAVE",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_DEBUG_MEM_ACCESS ,                                                0}},
-    {0xCA, 1, X86InstInfo{"RETF",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_BLOCK_END,                                                              2}},
-    {0xCB, 1, X86InstInfo{"RETF",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_BLOCK_END,                                                              0}},
-    {0xCC, 1, X86InstInfo{"INT3",   TYPE_INST, FLAGS_BLOCK_END,                                                                                      0}},
-    {0xCD, 1, X86InstInfo{"INT",    TYPE_INST, DEFAULT_SYSCALL_FLAGS,                                                                  1}},
-    {0xCE, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_CE] }}},
-    {0xCF, 1, X86InstInfo{"IRET",   TYPE_INST, FLAGS_SETS_RIP | FLAGS_BLOCK_END,                                                                                    0}},
+    {0xD7, 1, X86InstInfo{"XLAT",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS,                                                                           0, nullptr}},

-    {0xD4, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_D4] }}},
-    {0xD5, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_D5] }}},
-    {0xD6, 1, X86InstInfo{"", TYPE_ARCH_DISPATCHER, FLAGS_NONE, 0, { .Indirect = Primary_ArchSelect_LUT[ENTRY_D6] }}},
-    {0xD7, 1, X86InstInfo{"XLAT",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS,                                                                           0}},
-
-    {0xE0, 1, X86InstInfo{"LOOPNE", TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_SF_SRC_RCX,                             1}},
-    {0xE1, 1, X86InstInfo{"LOOPE",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_SF_SRC_RCX,                             1}},
-    {0xE2, 1, X86InstInfo{"LOOP",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_SF_SRC_RCX,                             1}},
-    {0xE3, 1, X86InstInfo{"JrCXZ",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT ,                             1}},
+    {0xE0, 1, X86InstInfo{"LOOPNE", TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_SF_SRC_RCX,                             1, nullptr}},
+    {0xE1, 1, X86InstInfo{"LOOPE",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_SF_SRC_RCX,                             1, nullptr}},
+    {0xE2, 1, X86InstInfo{"LOOP",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_SF_SRC_RCX,                             1, nullptr}},
+    {0xE3, 1, X86InstInfo{"JrCXZ",  TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT ,                             1, nullptr}},

    // Should just throw GP
-    {0xE4, 2, X86InstInfo{"IN",     TYPE_INST, FLAGS_BLOCK_END,                                                                                                      1}},
-    {0xE6, 2, X86InstInfo{"OUT",    TYPE_INST, FLAGS_BLOCK_END,                                                                                                      1}},
+    {0xE4, 2, X86InstInfo{"IN",     TYPE_INST, FLAGS_BLOCK_END,                                                                                                      1, nullptr}},
+    {0xE6, 2, X86InstInfo{"OUT",    TYPE_INST, FLAGS_BLOCK_END,                                                                                                      1, nullptr}},

-    {0xE8, 1, X86InstInfo{"CALL",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2 | FLAGS_BLOCK_END | FLAGS_CALL , 4}},
-    {0xE9, 1, X86InstInfo{"JMP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2 | FLAGS_BLOCK_END , 4}},
-    {0xEB, 1, X86InstInfo{"JMP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_BLOCK_END ,                             1}},
+    {0xE8, 1, X86InstInfo{"CALL",   TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2 | FLAGS_BLOCK_END | FLAGS_CALL , 4, nullptr}},
+    {0xE9, 1, X86InstInfo{"JMP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_DISPLACE_SIZE_DIV_2 | FLAGS_BLOCK_END , 4, nullptr}},
+    {0xEB, 1, X86InstInfo{"JMP",    TYPE_INST, GenFlagsSameSize(SIZE_64BITDEF) | FLAGS_SETS_RIP | FLAGS_SRC_SEXT | FLAGS_BLOCK_END ,                             1, nullptr}},

    // Should just throw GP
-    {0xEC, 2, X86InstInfo{"IN",     TYPE_INST, FLAGS_BLOCK_END,             0}},
-    {0xEE, 2, X86InstInfo{"OUT",    TYPE_INST, FLAGS_BLOCK_END,             0}},
+    {0xEC, 2, X86InstInfo{"IN",     TYPE_INST, FLAGS_BLOCK_END,             0, nullptr}},
+    {0xEE, 2, X86InstInfo{"OUT",    TYPE_INST, FLAGS_BLOCK_END,             0, nullptr}},

-    {0xF1, 1, X86InstInfo{"INT1",   TYPE_INST, FLAGS_BLOCK_END,               0}},
-    {0xF4, 1, X86InstInfo{"HLT",    TYPE_INST, FLAGS_BLOCK_END,               0}},
-    {0xF5, 1, X86InstInfo{"CMC",    TYPE_INST, FLAGS_NONE,                0}},
-    {0xF8, 1, X86InstInfo{"CLC",    TYPE_INST, FLAGS_NONE,                0}},
-    {0xF9, 1, X86InstInfo{"STC",    TYPE_INST, FLAGS_NONE,                0}},
-    {0xFA, 1, X86InstInfo{"CLI",    TYPE_INST, FLAGS_NONE,                0}},
-    {0xFB, 1, X86InstInfo{"STI",    TYPE_INST, FLAGS_NONE,                0}},
-    {0xFC, 1, X86InstInfo{"CLD",    TYPE_INST, FLAGS_NONE,                0}},
-    {0xFD, 1, X86InstInfo{"STD",    TYPE_INST, FLAGS_NONE,                0}},
+    {0xF1, 1, X86InstInfo{"INT1",   TYPE_INST, FLAGS_BLOCK_END,               0, nullptr}},
+    {0xF4, 1, X86InstInfo{"HLT",    TYPE_INST, FLAGS_BLOCK_END,               0, nullptr}},
+    {0xF5, 1, X86InstInfo{"CMC",    TYPE_INST, FLAGS_NONE,                0, nullptr}},
+    {0xF8, 1, X86InstInfo{"CLC",    TYPE_INST, FLAGS_NONE,                0, nullptr}},
+    {0xF9, 1, X86InstInfo{"STC",    TYPE_INST, FLAGS_NONE,                0, nullptr}},
+    {0xFA, 1, X86InstInfo{"CLI",    TYPE_INST, FLAGS_NONE,                0, nullptr}},
+    {0xFB, 1, X86InstInfo{"STI",    TYPE_INST, FLAGS_NONE,                0, nullptr}},
+    {0xFC, 1, X86InstInfo{"CLD",    TYPE_INST, FLAGS_NONE,                0, nullptr}},
+    {0xFD, 1, X86InstInfo{"STD",    TYPE_INST, FLAGS_NONE,                0, nullptr}},

    // Two Byte table
-    {0x0F, 1, X86InstInfo{"",   TYPE_SECONDARY_TABLE_PREFIX, FLAGS_NONE,  0}},
+    {0x0F, 1, X86InstInfo{"",   TYPE_SECONDARY_TABLE_PREFIX, FLAGS_NONE,  0, nullptr}},

    // x87 table
-    {0xD8, 8, X86InstInfo{"",   TYPE_X87_TABLE_PREFIX, FLAGS_MODRM,        0}},
+    {0xD8, 8, X86InstInfo{"",   TYPE_X87_TABLE_PREFIX, FLAGS_MODRM,        0, nullptr}},

    // ModRM table
    // MoreBytes field repurposed for valid bits mask
-    {0x80, 1, X86InstInfo{"",   TYPE_GROUP_1, FLAGS_MODRM, 0}},
-    {0x81, 1, X86InstInfo{"",   TYPE_GROUP_1, FLAGS_MODRM, 1}},
-    {0x82, 1, X86InstInfo{"",   TYPE_GROUP_1, FLAGS_MODRM, 2}},
-    {0x83, 1, X86InstInfo{"",   TYPE_GROUP_1, FLAGS_MODRM, 3}},
-    {0xC0, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 0}},
-    {0xC1, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 1}},
-    {0xD0, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 2}},
-    {0xD1, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 3}},
-    {0xD2, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 4}},
-    {0xD3, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 5}},
-    {0xF6, 1, X86InstInfo{"",   TYPE_GROUP_3, FLAGS_MODRM, 0}},
-    {0xF7, 1, X86InstInfo{"",   TYPE_GROUP_3, FLAGS_MODRM, 1}},
-    {0xFE, 1, X86InstInfo{"",   TYPE_GROUP_4, FLAGS_MODRM, 0}},
-    {0xFF, 1, X86InstInfo{"",   TYPE_GROUP_5, FLAGS_MODRM, 0}},
+    {0x80, 1, X86InstInfo{"",   TYPE_GROUP_1, FLAGS_MODRM, 0, nullptr}},
+    {0x81, 1, X86InstInfo{"",   TYPE_GROUP_1, FLAGS_MODRM, 1, nullptr}},
+    {0x82, 1, X86InstInfo{"",   TYPE_GROUP_1, FLAGS_MODRM, 2, nullptr}},
+    {0x83, 1, X86InstInfo{"",   TYPE_GROUP_1, FLAGS_MODRM, 3, nullptr}},
+    {0xC0, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 0, nullptr}},
+    {0xC1, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 1, nullptr}},
+    {0xD0, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 2, nullptr}},
+    {0xD1, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 3, nullptr}},
+    {0xD2, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 4, nullptr}},
+    {0xD3, 1, X86InstInfo{"",   TYPE_GROUP_2, FLAGS_MODRM, 5, nullptr}},
+    {0xF6, 1, X86InstInfo{"",   TYPE_GROUP_3, FLAGS_MODRM, 0, nullptr}},
+    {0xF7, 1, X86InstInfo{"",   TYPE_GROUP_3, FLAGS_MODRM, 1, nullptr}},
+    {0xFE, 1, X86InstInfo{"",   TYPE_GROUP_4, FLAGS_MODRM, 0, nullptr}},
+    {0xFF, 1, X86InstInfo{"",   TYPE_GROUP_5, FLAGS_MODRM, 0, nullptr}},

    // Group 11
-    {0xC6, 1, X86InstInfo{"",   TYPE_GROUP_11, FLAGS_MODRM, 0}},
-    {0xC7, 1, X86InstInfo{"",   TYPE_GROUP_11, FLAGS_MODRM, 1}},
+    {0xC6, 1, X86InstInfo{"",   TYPE_GROUP_11, FLAGS_MODRM, 0, nullptr}},
+    {0xC7, 1, X86InstInfo{"",   TYPE_GROUP_11, FLAGS_MODRM, 1, nullptr}},

    // VEX table
-    {0xC4, 2, X86InstInfo{"",   TYPE_VEX_TABLE_PREFIX, FLAGS_NONE, 0}},
+    {0xC4, 2, X86InstInfo{"",   TYPE_VEX_TABLE_PREFIX, FLAGS_NONE, 0, nullptr}},
  };

-  GenerateTable(Table.data(), BaseOpTable, std::size(BaseOpTable));
+  GenerateTable(&Table.at(0), BaseOpTable, std::size(BaseOpTable));
  IR::InstallToTable(Table, IR::OpDispatch_BaseOpTable);

  return Table;
 }();

+void InitializeBaseTables(Context::OperatingMode Mode) {
+  static constexpr U8U8InfoStruct BaseOpTable_64[] = {
+    {0x06, 2, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                     0, nullptr}},
+    {0x0E, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                     0, nullptr}},
+    {0x16, 2, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                     0, nullptr}},
+    {0x1E, 2, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                     0, nullptr}},
+    {0x27, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                     0, nullptr}},
+    {0x2F, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                     0, nullptr}},
+    {0x37, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                     0, nullptr}},
+    {0x3F, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                     0, nullptr}},
+
+    // REX
+    {0x40, 16, X86InstInfo{"", TYPE_REX_PREFIX, FLAGS_NONE,        0, nullptr}},
+    {0x60, 2, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                           0, nullptr}},
+    {0x63, 1, X86InstInfo{"MOVSXD", TYPE_INST, GenFlagsDstSize(SIZE_64BIT) | FLAGS_MODRM,                                                                         0, nullptr}},
+    {0x9A, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                           0, nullptr}},
+    {0xA0, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX | FLAGS_MEM_OFFSET, 8, nullptr}},
+    {0xA2, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_SRC_RAX | FLAGS_MEM_OFFSET, 8, nullptr}},
+    {0xA1, 1, X86InstInfo{"MOV",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_MEM_OFFSET, 8, nullptr}},
+    {0xA3, 1, X86InstInfo{"MOV",    TYPE_INST, FLAGS_SF_SRC_RAX | FLAGS_MEM_OFFSET, 8, nullptr}},
+    {0xCE, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                                    0, nullptr}},
+    {0xD4, 2, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                                    0, nullptr}},
+    // `L1OM` Larrabee instructions used this as an escape byte.
+    // FEX will never support this.
+    {0xD6, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                                    0, nullptr}},
+    {0xEA, 1, X86InstInfo{"[INV]",  TYPE_INVALID, FLAGS_NONE,                                                                                                      0, nullptr}},
+  };
+
+  static constexpr U8U8InfoStruct BaseOpTable_32[] = {
+    {0x06, 1, X86InstInfo{"PUSH ES",  TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_DEBUG_MEM_ACCESS,            0, nullptr}},
+    {0x07, 1, X86InstInfo{"POP ES",   TYPE_INST, GenFlagsSizes(SIZE_16BIT, SIZE_DEF) | FLAGS_DEBUG_MEM_ACCESS,    0, nullptr}},
+    {0x0E, 1, X86InstInfo{"PUSH CS",  TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_DEBUG_MEM_ACCESS,            0, nullptr}},
+    {0x16, 1, X86InstInfo{"PUSH SS",  TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_DEBUG_MEM_ACCESS,            0, nullptr}},
+    {0x17, 1, X86InstInfo{"POP SS",   TYPE_INST, GenFlagsSizes(SIZE_16BIT, SIZE_DEF) | FLAGS_DEBUG_MEM_ACCESS,    0, nullptr}},
+    {0x1E, 1, X86InstInfo{"PUSH DS",  TYPE_INST, GenFlagsSrcSize(SIZE_16BIT) | FLAGS_DEBUG_MEM_ACCESS,            0, nullptr}},
+    {0x1F, 1, X86InstInfo{"POP DS",   TYPE_INST, GenFlagsSizes(SIZE_16BIT, SIZE_DEF) | FLAGS_DEBUG_MEM_ACCESS,    0, nullptr}},
+    {0x27, 1, X86InstInfo{"DAA",      TYPE_INST, GenFlagsDstSize(SIZE_8BIT) | FLAGS_SF_DST_RAX,                   0, nullptr}},
+    {0x2F, 1, X86InstInfo{"DAS",      TYPE_INST, GenFlagsDstSize(SIZE_8BIT) | FLAGS_SF_DST_RAX,                   0, nullptr}},
+    {0x37, 1, X86InstInfo{"AAA",      TYPE_INST, GenFlagsDstSize(SIZE_16BIT) | FLAGS_SF_DST_RAX,                  0, nullptr}},
+    {0x3F, 1, X86InstInfo{"AAS",      TYPE_INST, GenFlagsDstSize(SIZE_16BIT) | FLAGS_SF_DST_RAX,                  0, nullptr}},
+
+    {0x40, 8, X86InstInfo{"INC",    TYPE_INST, FLAGS_SF_REX_IN_BYTE,                                              0, nullptr}},
+    {0x48, 8, X86InstInfo{"DEC",    TYPE_INST, FLAGS_SF_REX_IN_BYTE,                                              0, nullptr}},
+    {0x60, 1, X86InstInfo{"PUSHA",  TYPE_INST, FLAGS_DEBUG_MEM_ACCESS,                                            0, nullptr}},
+    {0x61, 1, X86InstInfo{"POPA",   TYPE_INST, FLAGS_DEBUG_MEM_ACCESS,                                            0, nullptr}},
+    {0x63, 1, X86InstInfo{"ARPL",   TYPE_INVALID, FLAGS_NONE,                                                     0, nullptr}},
+
+    {0x9A, 1, X86InstInfo{"CALLF",  TYPE_INST, FLAGS_NONE,                                                        0, nullptr}},
+    {0xA0, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX | FLAGS_MEM_OFFSET, 4, nullptr}},
+    {0xA2, 1, X86InstInfo{"MOV",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_SRC_RAX | FLAGS_MEM_OFFSET, 4, nullptr}},
+    {0xA1, 1, X86InstInfo{"MOV",    TYPE_INST, FLAGS_SF_DST_RAX | FLAGS_MEM_OFFSET,                               4, nullptr}},
+    {0xA3, 1, X86InstInfo{"MOV",    TYPE_INST, FLAGS_SF_SRC_RAX | FLAGS_MEM_OFFSET,                               4, nullptr}},
+    {0xCE, 1, X86InstInfo{"INTO",   TYPE_INST, FLAGS_NONE,                                                        0, nullptr}},
+    {0xD4, 1, X86InstInfo{"AAM",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX,                    1, nullptr}},
+    {0xD5, 1, X86InstInfo{"AAD",    TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX,                    1, nullptr}},
+    {0xD6, 1, X86InstInfo{"SALC",   TYPE_INST, GenFlagsSameSize(SIZE_8BIT) | FLAGS_SF_DST_RAX | FLAGS_SF_SRC_RAX, 0, nullptr}},
+    {0xEA, 1, X86InstInfo{"JMPF",   TYPE_INST, FLAGS_NONE,                                                        0, nullptr}},
+  };
+
+  if (Mode == Context::MODE_64BIT) {
+    GenerateTable(&BaseOps.at(0), BaseOpTable_64, std::size(BaseOpTable_64));
+    IR::InstallToTable(BaseOps, IR::OpDispatch_BaseOpTable_64);
+  }
+  else {
+    GenerateTable(&BaseOps.at(0), BaseOpTable_32, std::size(BaseOpTable_32));
+    IR::InstallToTable(BaseOps, IR::OpDispatch_BaseOpTable_32);
+  }
+}
 }
Author	SHA1	Message	Date
Ryan Houdek	93c428ae53	Docs: Update for release FEX-2508.1	2025-08-05 19:51:54 -07:00
Alyssa Rosenzweig	5836309525	unittests: add blake3 test this provokes RA spilling and hit an assertion fail on main. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>	2025-08-05 19:50:53 -07:00
Alyssa Rosenzweig	43092ce48b	RegisterAllocationPass: fix SRA spilling corner I hate this. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>	2025-08-05 19:50:48 -07:00
Alyssa Rosenzweig	e5d51a20b2	RegisterAllocationPass: simplify next-use logic I doubt this will fix the regression but it might make it easier to identify. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>	2025-08-05 19:50:43 -07:00