//===-- R600TargetMachine.cpp - TargetMachine for hw codegen targets-------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // /// \file /// The AMDGPU-R600 target machine contains all of the hardware specific /// information needed to emit code for R600 GPUs. // //===----------------------------------------------------------------------===// #include "R600TargetMachine.h" #include "AMDGPUTargetMachine.h" #include "R600.h" #include "R600CodeGenPassBuilder.h" #include "R600MachineScheduler.h" #include "R600TargetTransformInfo.h" #include "llvm/Transforms/Scalar.h" #include using namespace llvm; static cl::opt EnableR600StructurizeCFG("r600-ir-structurize", cl::desc("Use StructurizeCFG IR pass"), cl::init(true)); static cl::opt EnableR600IfConvert("r600-if-convert", cl::desc("Use if conversion pass"), cl::ReallyHidden, cl::init(true)); static cl::opt EnableAMDGPUFunctionCallsOpt( "amdgpu-function-calls", cl::desc("Enable AMDGPU function call support"), cl::location(AMDGPUTargetMachine::EnableFunctionCalls), cl::init(true), cl::Hidden); static ScheduleDAGInstrs *createR600MachineScheduler(MachineSchedContext *C) { return new ScheduleDAGMILive(C, std::make_unique()); } static MachineSchedRegistry R600SchedRegistry("r600", "Run R600's custom scheduler", createR600MachineScheduler); //===----------------------------------------------------------------------===// // R600 Target Machine (R600 -> Cayman) //===----------------------------------------------------------------------===// R600TargetMachine::R600TargetMachine(const Target &T, const Triple &TT, StringRef CPU, StringRef FS, const TargetOptions &Options, std::optional RM, std::optional CM, CodeGenOptLevel OL, bool JIT) : AMDGPUTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL) { setRequiresStructuredCFG(true); // Override the default since calls aren't supported for r600. if (EnableFunctionCalls && EnableAMDGPUFunctionCallsOpt.getNumOccurrences() == 0) EnableFunctionCalls = false; } const TargetSubtargetInfo * R600TargetMachine::getSubtargetImpl(const Function &F) const { StringRef GPU = getGPUName(F); StringRef FS = getFeatureString(F); SmallString<128> SubtargetKey(GPU); SubtargetKey.append(FS); auto &I = SubtargetMap[SubtargetKey]; if (!I) { // This needs to be done before we create a new subtarget since any // creation will depend on the TM and the code generation flags on the // function that reside in TargetOptions. resetTargetOptions(F); I = std::make_unique(TargetTriple, GPU, FS, *this); } return I.get(); } TargetTransformInfo R600TargetMachine::getTargetTransformInfo(const Function &F) const { return TargetTransformInfo(R600TTIImpl(this, F)); } namespace { class R600PassConfig final : public AMDGPUPassConfig { public: R600PassConfig(LLVMTargetMachine &TM, PassManagerBase &PM) : AMDGPUPassConfig(TM, PM) {} ScheduleDAGInstrs * createMachineScheduler(MachineSchedContext *C) const override { return createR600MachineScheduler(C); } bool addPreISel() override; bool addInstSelector() override; void addPreRegAlloc() override; void addPreSched2() override; void addPreEmitPass() override; }; } // namespace //===----------------------------------------------------------------------===// // R600 Pass Setup //===----------------------------------------------------------------------===// bool R600PassConfig::addPreISel() { AMDGPUPassConfig::addPreISel(); if (EnableR600StructurizeCFG) addPass(createStructurizeCFGPass()); return false; } bool R600PassConfig::addInstSelector() { addPass(createR600ISelDag(getAMDGPUTargetMachine(), getOptLevel())); return false; } void R600PassConfig::addPreRegAlloc() { addPass(createR600VectorRegMerger()); } void R600PassConfig::addPreSched2() { addPass(createR600EmitClauseMarkers()); if (EnableR600IfConvert) addPass(&IfConverterID); addPass(createR600ClauseMergePass()); } void R600PassConfig::addPreEmitPass() { addPass(createR600MachineCFGStructurizerPass()); addPass(createR600ExpandSpecialInstrsPass()); addPass(&FinalizeMachineBundlesID); addPass(createR600Packetizer()); addPass(createR600ControlFlowFinalizer()); } TargetPassConfig *R600TargetMachine::createPassConfig(PassManagerBase &PM) { return new R600PassConfig(*this, PM); } Error R600TargetMachine::buildCodeGenPipeline( ModulePassManager &MPM, raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut, CodeGenFileType FileType, const CGPassBuilderOption &Opts, PassInstrumentationCallbacks *PIC) { R600CodeGenPassBuilder CGPB(*this, Opts, PIC); return CGPB.buildPipeline(MPM, Out, DwoOut, FileType); }