1//==-- AArch64TargetMachine.h - Define TargetMachine for AArch64 -*- 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 AArch64 specific subclass of TargetMachine.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64TARGETMACHINE_H
14#define LLVM_LIB_TARGET_AARCH64_AARCH64TARGETMACHINE_H
15
16#include "AArch64InstrInfo.h"
17#include "AArch64Subtarget.h"
18#include "llvm/IR/DataLayout.h"
19#include "llvm/Target/TargetMachine.h"
20#include <optional>
21
22namespace llvm {
23
24class AArch64TargetMachine : public LLVMTargetMachine {
25protected:
26 std::unique_ptr<TargetLoweringObjectFile> TLOF;
27 mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap;
28
29public:
30 AArch64TargetMachine(const Target &T, const Triple &TT, StringRef CPU,
31 StringRef FS, const TargetOptions &Options,
32 std::optional<Reloc::Model> RM,
33 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
34 bool JIT, bool IsLittleEndian);
35
36 ~AArch64TargetMachine() override;
37 const AArch64Subtarget *getSubtargetImpl(const Function &F) const override;
38 // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
39 // subtargets are per-function entities based on the target-specific
40 // attributes of each function.
41 const AArch64Subtarget *getSubtargetImpl() const = delete;
42
43 // Pass Pipeline Configuration
44 TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
45
46 void registerPassBuilderCallbacks(PassBuilder &PB) override;
47
48 TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
49
50 TargetLoweringObjectFile* getObjFileLowering() const override {
51 return TLOF.get();
52 }
53
54 MachineFunctionInfo *
55 createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
56 const TargetSubtargetInfo *STI) const override;
57
58 yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override;
59 yaml::MachineFunctionInfo *
60 convertFuncInfoToYAML(const MachineFunction &MF) const override;
61 bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &,
62 PerFunctionMIParsingState &PFS,
63 SMDiagnostic &Error,
64 SMRange &SourceRange) const override;
65
66 /// Returns true if a cast between SrcAS and DestAS is a noop.
67 bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
68 // Addrspacecasts are always noops.
69 return true;
70 }
71
72private:
73 bool isLittle;
74};
75
76// AArch64 little endian target machine.
77//
78class AArch64leTargetMachine : public AArch64TargetMachine {
79 virtual void anchor();
80
81public:
82 AArch64leTargetMachine(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// AArch64 big endian target machine.
90//
91class AArch64beTargetMachine : public AArch64TargetMachine {
92 virtual void anchor();
93
94public:
95 AArch64beTargetMachine(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
105