forked from OSchip/llvm-project
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
//===- MipsTargetMachine.h - Define TargetMachine for Mips ------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares the Mips specific subclass of TargetMachine.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
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#define LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
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#include "MCTargetDesc/MipsABIInfo.h"
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#include "MipsSubtarget.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/CodeGen.h"
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#include "llvm/Target/TargetMachine.h"
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#include <memory>
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namespace llvm {
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class MipsTargetMachine : public LLVMTargetMachine {
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bool isLittle;
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std::unique_ptr<TargetLoweringObjectFile> TLOF;
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// Selected ABI
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MipsABIInfo ABI;
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const MipsSubtarget *Subtarget;
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MipsSubtarget DefaultSubtarget;
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MipsSubtarget NoMips16Subtarget;
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MipsSubtarget Mips16Subtarget;
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mutable StringMap<std::unique_ptr<MipsSubtarget>> SubtargetMap;
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public:
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MipsTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
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StringRef FS, const TargetOptions &Options,
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Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
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CodeGenOpt::Level OL, bool JIT, bool isLittle);
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~MipsTargetMachine() override;
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TargetTransformInfo getTargetTransformInfo(const Function &F) override;
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const MipsSubtarget *getSubtargetImpl() const {
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if (Subtarget)
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return Subtarget;
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return &DefaultSubtarget;
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}
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const MipsSubtarget *getSubtargetImpl(const Function &F) const override;
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/// Reset the subtarget for the Mips target.
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void resetSubtarget(MachineFunction *MF);
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// Pass Pipeline Configuration
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TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
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TargetLoweringObjectFile *getObjFileLowering() const override {
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return TLOF.get();
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}
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/// Returns true if a cast between SrcAS and DestAS is a noop.
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bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
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// Mips doesn't have any special address spaces so we just reserve
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// the first 256 for software use (e.g. OpenCL) and treat casts
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// between them as noops.
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return SrcAS < 256 && DestAS < 256;
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}
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bool isLittleEndian() const { return isLittle; }
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const MipsABIInfo &getABI() const { return ABI; }
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};
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/// Mips32/64 big endian target machine.
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///
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class MipsebTargetMachine : public MipsTargetMachine {
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virtual void anchor();
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public:
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MipsebTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
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StringRef FS, const TargetOptions &Options,
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Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
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CodeGenOpt::Level OL, bool JIT);
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};
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/// Mips32/64 little endian target machine.
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///
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class MipselTargetMachine : public MipsTargetMachine {
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virtual void anchor();
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public:
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MipselTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
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StringRef FS, const TargetOptions &Options,
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Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
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CodeGenOpt::Level OL, bool JIT);
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
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