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//===- MipsTargetMachine.h - Define TargetMachine for Mips ------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file declares the Mips specific subclass of TargetMachine.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
#define LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
#include "MCTargetDesc/MipsABIInfo.h"
#include "MipsSubtarget.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Target/TargetMachine.h"
#include <memory>
#include <optional>
namespace llvm {
class MipsTargetMachine : public LLVMTargetMachine {
bool isLittle;
std::unique_ptr<TargetLoweringObjectFile> TLOF;
// Selected ABI
MipsABIInfo ABI;
const MipsSubtarget *Subtarget;
MipsSubtarget DefaultSubtarget;
MipsSubtarget NoMips16Subtarget;
MipsSubtarget Mips16Subtarget;
mutable StringMap<std::unique_ptr<MipsSubtarget>> SubtargetMap;
public:
MipsTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
StringRef FS, const TargetOptions &Options,
std::optional<Reloc::Model> RM,
std::optional<CodeModel::Model> CM, CodeGenOpt::Level OL,
bool JIT, bool isLittle);
~MipsTargetMachine() override;
TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
const MipsSubtarget *getSubtargetImpl() const {
if (Subtarget)
return Subtarget;
return &DefaultSubtarget;
}
const MipsSubtarget *getSubtargetImpl(const Function &F) const override;
/// Reset the subtarget for the Mips target.
void resetSubtarget(MachineFunction *MF);
// Pass Pipeline Configuration
TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
TargetLoweringObjectFile *getObjFileLowering() const override {
return TLOF.get();
}
MachineFunctionInfo *
createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
const TargetSubtargetInfo *STI) const override;
/// Returns true if a cast between SrcAS and DestAS is a noop.
bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
// Mips doesn't have any special address spaces so we just reserve
// the first 256 for software use (e.g. OpenCL) and treat casts
// between them as noops.
return SrcAS < 256 && DestAS < 256;
}
bool isLittleEndian() const { return isLittle; }
const MipsABIInfo &getABI() const { return ABI; }
};
/// Mips32/64 big endian target machine.
///
class MipsebTargetMachine : public MipsTargetMachine {
virtual void anchor();
public:
MipsebTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
StringRef FS, const TargetOptions &Options,
std::optional<Reloc::Model> RM,
std::optional<CodeModel::Model> CM, CodeGenOpt::Level OL,
bool JIT);
};
/// Mips32/64 little endian target machine.
///
class MipselTargetMachine : public MipsTargetMachine {
virtual void anchor();
public:
MipselTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
StringRef FS, const TargetOptions &Options,
std::optional<Reloc::Model> RM,
std::optional<CodeModel::Model> CM, CodeGenOpt::Level OL,
bool JIT);
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
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