mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-12 09:00:45 +02:00
Alyssa Rosenzweig
24cb02f4ff
New RA does not need it for correctness, and the slight slow down to new RA from not compacting first is much smaller than the cost of compaction. Overall speeds up node.js start time by ~6% on top of new RA. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
// SPDX-License-Identifier: MIT
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/*
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$info$
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meta: ir|opts ~ IR to IR Optimization
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tags: ir|opts
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desc: Defines which passes are run, and runs them
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$end_info$
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*/
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#include "Interface/Context/Context.h"
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#include "Interface/IR/PassManager.h"
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#include "Interface/IR/Passes.h"
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#include "Interface/IR/Passes/RegisterAllocationPass.h"
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#include <FEXCore/Config/Config.h>
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#include <FEXCore/Utils/Profiler.h>
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namespace FEXCore::IR {
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class IREmitter;
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void PassManager::Finalize() {
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if (!PassManagerDumpIR()) {
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// Not configured to dump any IR, just return.
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return;
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}
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auto it = Passes.begin();
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// Walk the passes and add them where asked.
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if (PassManagerDumpIR() & FEXCore::Config::PassManagerDumpIR::BEFOREOPT) {
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// Insert at the start.
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it = InsertAt(it, Debug::CreateIRDumper());
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++it; // Skip what we inserted.
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}
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if ((PassManagerDumpIR() & FEXCore::Config::PassManagerDumpIR::BEFOREPASS) ||
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(PassManagerDumpIR() & FEXCore::Config::PassManagerDumpIR::AFTERPASS)) {
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bool SkipFirstBefore = PassManagerDumpIR() & FEXCore::Config::PassManagerDumpIR::BEFOREOPT;
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for (; it != Passes.end();) {
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if (PassManagerDumpIR() & FEXCore::Config::PassManagerDumpIR::BEFOREPASS) {
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if (SkipFirstBefore) {
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// If we need to skip the first one, then continue.
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SkipFirstBefore = false;
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++it;
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continue;
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}
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// Insert before
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it = InsertAt(it, Debug::CreateIRDumper());
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++it; // Skip what we inserted.
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}
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++it; // Skip current pass.
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if (PassManagerDumpIR() & FEXCore::Config::PassManagerDumpIR::AFTERPASS) {
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// Insert after
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it = InsertAt(it, Debug::CreateIRDumper());
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++it; // Skip what we inserted.
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}
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}
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}
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if (PassManagerDumpIR() & FEXCore::Config::PassManagerDumpIR::AFTEROPT) {
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if (!(PassManagerDumpIR() & FEXCore::Config::PassManagerDumpIR::AFTERPASS)) {
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// Insert final IRDumper.
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InsertAt(Passes.end(), Debug::CreateIRDumper());
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}
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}
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}
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void PassManager::AddDefaultPasses(FEXCore::Context::ContextImpl* ctx, bool InlineConstants) {
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FEX_CONFIG_OPT(DisablePasses, O0);
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if (!DisablePasses()) {
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InsertPass(CreateContextLoadStoreElimination(ctx->HostFeatures.SupportsAVX));
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if (Is64BitMode()) {
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// This needs to run after RCLSE
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// This only matters for 64-bit code since these instructions don't exist in 32-bit
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InsertPass(CreateLongDivideEliminationPass());
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}
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InsertPass(CreateDeadStoreElimination());
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InsertPass(CreatePassDeadCodeElimination());
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InsertPass(CreateConstProp(InlineConstants, ctx->HostFeatures.SupportsTSOImm9, Is64BitMode()));
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InsertPass(CreateDeadFlagCalculationEliminination());
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InsertPass(CreateInlineCallOptimization(&ctx->CPUID));
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InsertPass(CreatePassDeadCodeElimination());
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}
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}
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void PassManager::AddDefaultValidationPasses() {
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#if defined(ASSERTIONS_ENABLED) && ASSERTIONS_ENABLED
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InsertValidationPass(Validation::CreateIRValidation(), "IRValidation");
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InsertValidationPass(Validation::CreateRAValidation());
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#endif
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}
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void PassManager::InsertRegisterAllocationPass() {
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InsertPass(IR::CreateRegisterAllocationPass(), "RA");
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}
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bool PassManager::Run(IREmitter* IREmit) {
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FEXCORE_PROFILE_SCOPED("PassManager::Run");
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bool Changed = false;
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for (const auto& Pass : Passes) {
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Changed |= Pass->Run(IREmit);
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}
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#if defined(ASSERTIONS_ENABLED) && ASSERTIONS_ENABLED
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for (const auto& Pass : ValidationPasses) {
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Changed |= Pass->Run(IREmit);
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}
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#endif
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return Changed;
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}
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} // namespace FEXCore::IR
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