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//===-- AMDGPUTargetMachine.h - AMDGPU TargetMachine Interface --*- C++ -*-===//
//
// 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 TargetMachine interface definition for hw codegen targets.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
#define LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
#include "GCNSubtarget.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/Target/TargetMachine.h"
#include <optional>
#include <utility>
namespace llvm {
//===----------------------------------------------------------------------===//
// AMDGPU Target Machine (R600+)
//===----------------------------------------------------------------------===//
class AMDGPUTargetMachine : public LLVMTargetMachine {
protected:
std::unique_ptr<TargetLoweringObjectFile> TLOF;
StringRef getGPUName(const Function &F) const;
StringRef getFeatureString(const Function &F) const;
public:
static bool EnableLateStructurizeCFG;
static bool EnableFunctionCalls;
static bool EnableLowerModuleLDS;
AMDGPUTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
StringRef FS, TargetOptions Options,
std::optional<Reloc::Model> RM,
std::optional<CodeModel::Model> CM, CodeGenOpt::Level OL);
~AMDGPUTargetMachine() override;
const TargetSubtargetInfo *getSubtargetImpl() const;
const TargetSubtargetInfo *getSubtargetImpl(const Function &) const override = 0;
TargetLoweringObjectFile *getObjFileLowering() const override {
return TLOF.get();
}
void registerPassBuilderCallbacks(PassBuilder &PB) override;
void registerDefaultAliasAnalyses(AAManager &) override;
/// Get the integer value of a null pointer in the given address space.
static int64_t getNullPointerValue(unsigned AddrSpace);
bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override;
unsigned getAssumedAddrSpace(const Value *V) const override;
std::pair<const Value *, unsigned>
getPredicatedAddrSpace(const Value *V) const override;
unsigned getAddressSpaceForPseudoSourceKind(unsigned Kind) const override;
};
//===----------------------------------------------------------------------===//
// GCN Target Machine (SI+)
//===----------------------------------------------------------------------===//
class GCNTargetMachine final : public AMDGPUTargetMachine {
private:
mutable StringMap<std::unique_ptr<GCNSubtarget>> SubtargetMap;
public:
GCNTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
StringRef FS, TargetOptions Options,
std::optional<Reloc::Model> RM,
std::optional<CodeModel::Model> CM, CodeGenOpt::Level OL,
bool JIT);
TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
const TargetSubtargetInfo *getSubtargetImpl(const Function &) const override;
TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
bool useIPRA() const override {
return true;
}
void registerMachineRegisterInfoCallback(MachineFunction &MF) const override;
MachineFunctionInfo *
createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
const TargetSubtargetInfo *STI) const override;
yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override;
yaml::MachineFunctionInfo *
convertFuncInfoToYAML(const MachineFunction &MF) const override;
bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &,
PerFunctionMIParsingState &PFS,
SMDiagnostic &Error,
SMRange &SourceRange) const override;
};
//===----------------------------------------------------------------------===//
// AMDGPU Pass Setup
//===----------------------------------------------------------------------===//
class AMDGPUPassConfig : public TargetPassConfig {
public:
AMDGPUPassConfig(LLVMTargetMachine &TM, PassManagerBase &PM);
AMDGPUTargetMachine &getAMDGPUTargetMachine() const {
return getTM<AMDGPUTargetMachine>();
}
ScheduleDAGInstrs *
createMachineScheduler(MachineSchedContext *C) const override;
void addEarlyCSEOrGVNPass();
void addStraightLineScalarOptimizationPasses();
void addIRPasses() override;
void addCodeGenPrepare() override;
bool addPreISel() override;
bool addInstSelector() override;
bool addGCPasses() override;
std::unique_ptr<CSEConfigBase> getCSEConfig() const override;
/// Check if a pass is enabled given \p Opt option. The option always
/// overrides defaults if explicitly used. Otherwise its default will
/// be used given that a pass shall work at an optimization \p Level
/// minimum.
bool isPassEnabled(const cl::opt<bool> &Opt,
CodeGenOpt::Level Level = CodeGenOpt::Default) const {
if (Opt.getNumOccurrences())
return Opt;
if (TM->getOptLevel() < Level)
return false;
return Opt;
}
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
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