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 "AArch64LoopIdiomTransform.h" |
18 | #include "AArch64Subtarget.h" |
19 | #include "llvm/IR/DataLayout.h" |
20 | #include "llvm/Target/TargetMachine.h" |
21 | #include <optional> |
22 | |
23 | namespace llvm { |
24 | |
25 | class AArch64TargetMachine : public LLVMTargetMachine { |
26 | protected: |
27 | std::unique_ptr<TargetLoweringObjectFile> TLOF; |
28 | mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap; |
29 | |
30 | public: |
31 | AArch64TargetMachine(const Target &T, const Triple &TT, StringRef CPU, |
32 | StringRef FS, const TargetOptions &Options, |
33 | std::optional<Reloc::Model> RM, |
34 | std::optional<CodeModel::Model> CM, CodeGenOptLevel OL, |
35 | bool JIT, bool IsLittleEndian); |
36 | |
37 | ~AArch64TargetMachine() override; |
38 | const AArch64Subtarget *getSubtargetImpl(const Function &F) const override; |
39 | // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget, |
40 | // subtargets are per-function entities based on the target-specific |
41 | // attributes of each function. |
42 | const AArch64Subtarget *getSubtargetImpl() const = delete; |
43 | |
44 | // Pass Pipeline Configuration |
45 | TargetPassConfig *createPassConfig(PassManagerBase &PM) override; |
46 | |
47 | void registerPassBuilderCallbacks(PassBuilder &PB, |
48 | bool PopulateClassToPassNames) override; |
49 | |
50 | TargetTransformInfo getTargetTransformInfo(const Function &F) const override; |
51 | |
52 | TargetLoweringObjectFile* getObjFileLowering() const override { |
53 | return TLOF.get(); |
54 | } |
55 | |
56 | MachineFunctionInfo * |
57 | createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, |
58 | const TargetSubtargetInfo *STI) const override; |
59 | |
60 | yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override; |
61 | yaml::MachineFunctionInfo * |
62 | convertFuncInfoToYAML(const MachineFunction &MF) const override; |
63 | bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &, |
64 | PerFunctionMIParsingState &PFS, |
65 | SMDiagnostic &Error, |
66 | SMRange &SourceRange) const override; |
67 | |
68 | /// Returns true if a cast between SrcAS and DestAS is a noop. |
69 | bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override { |
70 | // Addrspacecasts are always noops. |
71 | return true; |
72 | } |
73 | |
74 | private: |
75 | bool isLittle; |
76 | }; |
77 | |
78 | // AArch64 little endian target machine. |
79 | // |
80 | class AArch64leTargetMachine : public AArch64TargetMachine { |
81 | virtual void anchor(); |
82 | |
83 | public: |
84 | AArch64leTargetMachine(const Target &T, const Triple &TT, StringRef CPU, |
85 | StringRef FS, const TargetOptions &Options, |
86 | std::optional<Reloc::Model> RM, |
87 | std::optional<CodeModel::Model> CM, CodeGenOptLevel OL, |
88 | bool JIT); |
89 | }; |
90 | |
91 | // AArch64 big endian target machine. |
92 | // |
93 | class AArch64beTargetMachine : public AArch64TargetMachine { |
94 | virtual void anchor(); |
95 | |
96 | public: |
97 | AArch64beTargetMachine(const Target &T, const Triple &TT, StringRef CPU, |
98 | StringRef FS, const TargetOptions &Options, |
99 | std::optional<Reloc::Model> RM, |
100 | std::optional<CodeModel::Model> CM, CodeGenOptLevel OL, |
101 | bool JIT); |
102 | }; |
103 | |
104 | } // end namespace llvm |
105 | |
106 | #endif |
107 | |