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