1//===-- RISCVTargetMachine.h - Define TargetMachine for RISC-V --*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file declares the RISC-V specific subclass of TargetMachine.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_RISCV_RISCVTARGETMACHINE_H
14#define LLVM_LIB_TARGET_RISCV_RISCVTARGETMACHINE_H
15
16#include "MCTargetDesc/RISCVMCTargetDesc.h"
17#include "RISCVSubtarget.h"
18#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
19#include "llvm/IR/DataLayout.h"
20#include "llvm/Target/TargetMachine.h"
21#include <optional>
22
23namespace llvm {
24class RISCVTargetMachine : public LLVMTargetMachine {
25 std::unique_ptr<TargetLoweringObjectFile> TLOF;
26 mutable StringMap<std::unique_ptr<RISCVSubtarget>> SubtargetMap;
27
28public:
29 RISCVTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
30 StringRef FS, const TargetOptions &Options,
31 std::optional<Reloc::Model> RM,
32 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
33 bool JIT);
34
35 const RISCVSubtarget *getSubtargetImpl(const Function &F) const override;
36 // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
37 // subtargets are per-function entities based on the target-specific
38 // attributes of each function.
39 const RISCVSubtarget *getSubtargetImpl() const = delete;
40
41 TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
42
43 TargetLoweringObjectFile *getObjFileLowering() const override {
44 return TLOF.get();
45 }
46
47 MachineFunctionInfo *
48 createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
49 const TargetSubtargetInfo *STI) const override;
50
51 TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
52
53 bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DstAS) const override;
54
55 yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override;
56 yaml::MachineFunctionInfo *
57 convertFuncInfoToYAML(const MachineFunction &MF) const override;
58 bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &,
59 PerFunctionMIParsingState &PFS,
60 SMDiagnostic &Error,
61 SMRange &SourceRange) const override;
62};
63} // namespace llvm
64
65#endif
66

source code of llvm/lib/Target/RISCV/RISCVTargetMachine.h