mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-07 06:00:16 +02:00
Ryan Houdek
520dfd7edf
If the long divides don't have anything in the upper bits then they can be optimized away. Teeworlds, SuperTuxKart, and RRootage were between 50%-55% getting removed
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*
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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/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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namespace FEXCore::IR {
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void PassManager::AddDefaultPasses(bool InlineConstants, bool StaticRegisterAllocation) {
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FEX_CONFIG_OPT(DisablePasses, O0);
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if (!DisablePasses()) {
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InsertPass(CreateContextLoadStoreElimination());
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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));
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////// InsertPass(CreateDeadFlagCalculationEliminination());
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InsertPass(CreateSyscallOptimization());
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InsertPass(CreatePassDeadCodeElimination());
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// only do SRA if enabled and JIT
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if (InlineConstants && StaticRegisterAllocation)
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InsertPass(CreateStaticRegisterAllocationPass());
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}
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else {
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// only do SRA if enabled and JIT
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if (InlineConstants && StaticRegisterAllocation)
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InsertPass(CreateStaticRegisterAllocationPass());
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}
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CompactionPass = CreateIRCompaction();
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// If the IR is compacted post-RA then the node indexing gets messed up and the backend isn't able to find the register assigned to a node
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// Compact before IR, don't worry about RA generating spills/fills
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InsertPass(CompactionPass);
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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::CreatePhiValidation());
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InsertValidationPass(Validation::CreateIRValidation());
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InsertValidationPass(Validation::CreateValueDominanceValidation());
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#endif
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}
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void PassManager::InsertRegisterAllocationPass(bool OptimizeSRA) {
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RAPass = IR::CreateRegisterAllocationPass(CompactionPass, OptimizeSRA);
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InsertPass(RAPass);
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}
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bool PassManager::Run(IREmitter *IREmit) {
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bool Changed = false;
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for (auto const &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 (auto const &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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}
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