1//===- MipsTargetMachine.h - Define TargetMachine for Mips ------*- 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 Mips specific subclass of TargetMachine.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
14#define LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
15
16#include "MCTargetDesc/MipsABIInfo.h"
17#include "MipsSubtarget.h"
18#include "llvm/ADT/StringMap.h"
19#include "llvm/ADT/StringRef.h"
20#include "llvm/CodeGen/CodeGenTargetMachineImpl.h"
21#include "llvm/Support/CodeGen.h"
22#include <memory>
23#include <optional>
24
25namespace llvm {
26
27class MipsTargetMachine : public CodeGenTargetMachineImpl {
28 const MipsOptions &CLOpts;
29 const MipsMCOptions &MCCLOpts;
30 bool isLittle;
31 bool IsJIT;
32 // Used to initialize module-wide object-file policy.
33 MipsSubtarget DefaultSubtarget;
34 std::unique_ptr<TargetLoweringObjectFile> TLOF;
35
36 mutable StringMap<std::unique_ptr<MipsSubtarget>> SubtargetMap;
37
38public:
39 MipsTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
40 StringRef FS, const TargetOptions &Options,
41 std::optional<Reloc::Model> RM,
42 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
43 bool JIT, bool isLittle);
44 ~MipsTargetMachine() override;
45
46 TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
47
48 const MipsOptions &getCLOpts() const { return CLOpts; }
49 const MipsMCOptions &getMCCLOpts() const { return MCCLOpts; }
50 const MipsSubtarget *getSubtargetImpl(const Function &F) const override;
51
52 // Pass Pipeline Configuration
53 TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
54
55 TargetLoweringObjectFile *getObjFileLowering() const override {
56 return TLOF.get();
57 }
58
59 MachineFunctionInfo *
60 createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
61 const TargetSubtargetInfo *STI) const override;
62
63 /// Returns true if a cast between SrcAS and DestAS is a noop.
64 bool isNoopAddrSpaceCast(const DataLayout &, unsigned SrcAS,
65 unsigned DestAS) const override {
66 // Mips doesn't have any special address spaces so we just reserve
67 // the first 256 for software use (e.g. OpenCL) and treat casts
68 // between them as noops.
69 return SrcAS < 256 && DestAS < 256;
70 }
71
72 bool isLittleEndian() const { return isLittle; }
73 bool isJIT() const { return IsJIT; }
74};
75
76/// Mips32/64 big endian target machine.
77///
78class MipsebTargetMachine : public MipsTargetMachine {
79 virtual void anchor();
80
81public:
82 MipsebTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
83 StringRef FS, const TargetOptions &Options,
84 std::optional<Reloc::Model> RM,
85 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
86 bool JIT);
87};
88
89/// Mips32/64 little endian target machine.
90///
91class MipselTargetMachine : public MipsTargetMachine {
92 virtual void anchor();
93
94public:
95 MipselTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
96 StringRef FS, const TargetOptions &Options,
97 std::optional<Reloc::Model> RM,
98 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
99 bool JIT);
100};
101
102} // end namespace llvm
103
104#endif // LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
105