forked from OSchip/llvm-project
207 lines
6.4 KiB
C++
207 lines
6.4 KiB
C++
//===-- AMDGPUTargetMachine.cpp - TargetMachine for hw codegen targets-----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// \brief The AMDGPU target machine contains all of the hardware specific
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/// information needed to emit code for R600 and SI GPUs.
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//
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//===----------------------------------------------------------------------===//
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#include "AMDGPUTargetMachine.h"
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#include "AMDGPU.h"
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#include "R600ISelLowering.h"
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#include "R600InstrInfo.h"
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#include "R600MachineScheduler.h"
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#include "SIISelLowering.h"
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#include "SIInstrInfo.h"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/CodeGen/MachineFunctionAnalysis.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/IR/Verifier.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/PassManager.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/raw_os_ostream.h"
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#include "llvm/Transforms/IPO.h"
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#include "llvm/Transforms/Scalar.h"
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#include <llvm/CodeGen/Passes.h>
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using namespace llvm;
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extern "C" void LLVMInitializeR600Target() {
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// Register the target
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RegisterTargetMachine<AMDGPUTargetMachine> X(TheAMDGPUTarget);
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}
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static ScheduleDAGInstrs *createR600MachineScheduler(MachineSchedContext *C) {
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return new ScheduleDAGMILive(C, new R600SchedStrategy());
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}
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static MachineSchedRegistry
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SchedCustomRegistry("r600", "Run R600's custom scheduler",
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createR600MachineScheduler);
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static std::string computeDataLayout(const AMDGPUSubtarget &ST) {
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std::string Ret = "e-p:32:32";
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if (ST.is64bit()) {
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// 32-bit private, local, and region pointers. 64-bit global and constant.
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Ret += "-p1:64:64-p2:64:64-p3:32:32-p4:32:32-p5:64:64";
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}
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Ret += "-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256"
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"-v512:512-v1024:1024-v2048:2048-n32:64";
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return Ret;
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}
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AMDGPUTargetMachine::AMDGPUTargetMachine(const Target &T, StringRef TT,
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StringRef CPU, StringRef FS,
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TargetOptions Options,
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Reloc::Model RM, CodeModel::Model CM,
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CodeGenOpt::Level OptLevel
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)
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:
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LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OptLevel),
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Subtarget(TT, CPU, FS),
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Layout(computeDataLayout(Subtarget)),
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FrameLowering(TargetFrameLowering::StackGrowsUp,
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64 * 16 // Maximum stack alignment (long16)
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, 0),
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IntrinsicInfo(this),
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InstrItins(&Subtarget.getInstrItineraryData()) {
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// TLInfo uses InstrInfo so it must be initialized after.
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if (Subtarget.getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS) {
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InstrInfo.reset(new R600InstrInfo(*this));
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TLInfo.reset(new R600TargetLowering(*this));
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} else {
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InstrInfo.reset(new SIInstrInfo(*this));
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TLInfo.reset(new SITargetLowering(*this));
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}
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setRequiresStructuredCFG(true);
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initAsmInfo();
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}
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AMDGPUTargetMachine::~AMDGPUTargetMachine() {
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}
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namespace {
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class AMDGPUPassConfig : public TargetPassConfig {
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public:
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AMDGPUPassConfig(AMDGPUTargetMachine *TM, PassManagerBase &PM)
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: TargetPassConfig(TM, PM) {}
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AMDGPUTargetMachine &getAMDGPUTargetMachine() const {
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return getTM<AMDGPUTargetMachine>();
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}
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virtual ScheduleDAGInstrs *
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createMachineScheduler(MachineSchedContext *C) const {
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const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
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if (ST.getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS)
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return createR600MachineScheduler(C);
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return 0;
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}
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virtual bool addPreISel();
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virtual bool addInstSelector();
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virtual bool addPreRegAlloc();
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virtual bool addPostRegAlloc();
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virtual bool addPreSched2();
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virtual bool addPreEmitPass();
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};
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} // End of anonymous namespace
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TargetPassConfig *AMDGPUTargetMachine::createPassConfig(PassManagerBase &PM) {
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return new AMDGPUPassConfig(this, PM);
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}
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//===----------------------------------------------------------------------===//
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// AMDGPU Analysis Pass Setup
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//===----------------------------------------------------------------------===//
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void AMDGPUTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
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// Add first the target-independent BasicTTI pass, then our AMDGPU pass. This
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// allows the AMDGPU pass to delegate to the target independent layer when
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// appropriate.
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PM.add(createBasicTargetTransformInfoPass(this));
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PM.add(createAMDGPUTargetTransformInfoPass(this));
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}
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bool
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AMDGPUPassConfig::addPreISel() {
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const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
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addPass(createFlattenCFGPass());
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if (ST.IsIRStructurizerEnabled())
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addPass(createStructurizeCFGPass());
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if (ST.getGeneration() > AMDGPUSubtarget::NORTHERN_ISLANDS) {
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addPass(createSinkingPass());
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addPass(createSITypeRewriter());
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addPass(createSIAnnotateControlFlowPass());
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} else {
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addPass(createR600TextureIntrinsicsReplacer());
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}
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return false;
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}
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bool AMDGPUPassConfig::addInstSelector() {
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addPass(createAMDGPUISelDag(getAMDGPUTargetMachine()));
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return false;
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}
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bool AMDGPUPassConfig::addPreRegAlloc() {
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addPass(createAMDGPUConvertToISAPass(*TM));
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const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
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if (ST.getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS) {
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addPass(createR600VectorRegMerger(*TM));
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} else {
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addPass(createSIFixSGPRCopiesPass(*TM));
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}
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return false;
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}
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bool AMDGPUPassConfig::addPostRegAlloc() {
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const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
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if (ST.getGeneration() > AMDGPUSubtarget::NORTHERN_ISLANDS) {
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addPass(createSIInsertWaits(*TM));
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}
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return false;
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}
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bool AMDGPUPassConfig::addPreSched2() {
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const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
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if (ST.getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS)
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addPass(createR600EmitClauseMarkers());
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if (ST.isIfCvtEnabled())
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addPass(&IfConverterID);
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if (ST.getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS)
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addPass(createR600ClauseMergePass(*TM));
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return false;
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}
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bool AMDGPUPassConfig::addPreEmitPass() {
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const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
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if (ST.getGeneration() <= AMDGPUSubtarget::NORTHERN_ISLANDS) {
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addPass(createAMDGPUCFGStructurizerPass());
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addPass(createR600ExpandSpecialInstrsPass(*TM));
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addPass(&FinalizeMachineBundlesID);
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addPass(createR600Packetizer(*TM));
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addPass(createR600ControlFlowFinalizer(*TM));
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} else {
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addPass(createSILowerControlFlowPass(*TM));
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}
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return false;
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}
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