Fixes the AArch64 JIT

Moves it to the new IR iterating style.
Forgot to clear icache after generation.
Fixes overly aggressive struct packing causing a fault

Source/CMakeLists.txt

@@ -85,6 +85,8 @@ if (ENABLE_JIT)
   endif()
   if(_M_ARM_64)
     add_definitions(-D_M_ARM_64=1)
+    add_definitions(-DVIXL_INCLUDE_TARGET_AARCH64=1)
+    add_definitions(-DVIXL_CODE_BUFFER_MMAP=1)
     list(APPEND SRCS Interface/Core/JIT/Arm64/JIT.cpp)
     list(APPEND JIT_LIBS vixl)
   endif()

include/FEXCore/Debug/InternalThreadState.h

@@ -38,7 +38,7 @@ namespace FEXCore::Core {
     uint64_t RunCount; ///< Number of times this block of code has been run
   };
 
-  struct __attribute__((packed)) InternalThreadState {
+  struct InternalThreadState {
     FEXCore::Core::ThreadState State;
 
     FEXCore::Context::Context *CTX;