LLVM 20.0.0git
MipsTargetMachine.h
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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
17#include "MipsSubtarget.h"
18#include "llvm/ADT/StringMap.h"
19#include "llvm/ADT/StringRef.h"
22#include <memory>
23#include <optional>
24
25namespace llvm {
26
28 bool isLittle;
29 std::unique_ptr<TargetLoweringObjectFile> TLOF;
30 // Selected ABI
31 MipsABIInfo ABI;
32 const MipsSubtarget *Subtarget;
33 MipsSubtarget DefaultSubtarget;
34 MipsSubtarget NoMips16Subtarget;
35 MipsSubtarget Mips16Subtarget;
36
37 mutable StringMap<std::unique_ptr<MipsSubtarget>> SubtargetMap;
38
39public:
40 MipsTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
42 std::optional<Reloc::Model> RM,
43 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
44 bool JIT, bool isLittle);
46
48
50 if (Subtarget)
51 return Subtarget;
52 return &DefaultSubtarget;
53 }
54
55 const MipsSubtarget *getSubtargetImpl(const Function &F) const override;
56
57 /// Reset the subtarget for the Mips target.
59
60 // Pass Pipeline Configuration
62
64 return TLOF.get();
65 }
66
69 const TargetSubtargetInfo *STI) const override;
70
71 /// Returns true if a cast between SrcAS and DestAS is a noop.
72 bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
73 // Mips doesn't have any special address spaces so we just reserve
74 // the first 256 for software use (e.g. OpenCL) and treat casts
75 // between them as noops.
76 return SrcAS < 256 && DestAS < 256;
77 }
78
79 bool isLittleEndian() const { return isLittle; }
80 const MipsABIInfo &getABI() const { return ABI; }
81};
82
83/// Mips32/64 big endian target machine.
84///
86 virtual void anchor();
87
88public:
89 MipsebTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
91 std::optional<Reloc::Model> RM,
92 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
93 bool JIT);
94};
95
96/// Mips32/64 little endian target machine.
97///
99 virtual void anchor();
100
101public:
102 MipselTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
104 std::optional<Reloc::Model> RM,
105 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
106 bool JIT);
107};
108
109} // end namespace llvm
110
111#endif // LLVM_LIB_TARGET_MIPS_MIPSTARGETMACHINE_H
This file defines the StringMap class.
#define F(x, y, z)
Definition: MD5.cpp:55
Basic Register Allocator
Allocate memory in an ever growing pool, as if by bump-pointer.
Definition: Allocator.h:66
This class describes a target machine that is implemented with the LLVM target-independent code gener...
bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override
Returns true if a cast between SrcAS and DestAS is a noop.
TargetTransformInfo getTargetTransformInfo(const Function &F) const override
Get a TargetTransformInfo implementation for the target.
MachineFunctionInfo * createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, const TargetSubtargetInfo *STI) const override
Create the target's instance of MachineFunctionInfo.
const MipsABIInfo & getABI() const
TargetLoweringObjectFile * getObjFileLowering() const override
TargetPassConfig * createPassConfig(PassManagerBase &PM) override
Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of ...
~MipsTargetMachine() override
void resetSubtarget(MachineFunction *MF)
Reset the subtarget for the Mips target.
const MipsSubtarget * getSubtargetImpl() const
Mips32/64 big endian target machine.
Mips32/64 little endian target machine.
StringMap - This is an unconventional map that is specialized for handling keys that are "strings",...
Definition: StringMap.h:128
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
std::unique_ptr< const MCSubtargetInfo > STI
TargetOptions Options
Target-Independent Code Generator Pass Configuration Options.
TargetSubtargetInfo - Generic base class for all target subtargets.
This pass provides access to the codegen interfaces that are needed for IR-level transformations.
Target - Wrapper for Target specific information.
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
PassManagerBase - An abstract interface to allow code to add passes to a pass manager without having ...
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
CodeGenOptLevel
Code generation optimization level.
Definition: CodeGen.h:54
MachineFunctionInfo - This class can be derived from and used by targets to hold private target-speci...