LLVM  13.0.0git
X86TargetMachine.h
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1 //===-- X86TargetMachine.h - Define TargetMachine for the X86 ---*- 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 X86 specific subclass of TargetMachine.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H
14 #define LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H
15 
16 #include "X86Subtarget.h"
17 #include "llvm/ADT/Optional.h"
18 #include "llvm/ADT/StringMap.h"
19 #include "llvm/Support/CodeGen.h"
21 #include <memory>
22 
23 namespace llvm {
24 
25 class StringRef;
26 class TargetTransformInfo;
27 
28 class X86TargetMachine final : public LLVMTargetMachine {
29  std::unique_ptr<TargetLoweringObjectFile> TLOF;
30  mutable StringMap<std::unique_ptr<X86Subtarget>> SubtargetMap;
31  // True if this is used in JIT.
32  bool IsJIT;
33 
34 public:
35  X86TargetMachine(const Target &T, const Triple &TT, StringRef CPU,
38  CodeGenOpt::Level OL, bool JIT);
39  ~X86TargetMachine() override;
40 
41  const X86Subtarget *getSubtargetImpl(const Function &F) const override;
42  // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
43  // subtargets are per-function entities based on the target-specific
44  // attributes of each function.
45  const X86Subtarget *getSubtargetImpl() const = delete;
46 
48 
49  // Set up the pass pipeline.
51 
53  return TLOF.get();
54  }
55 
56  bool isJIT() const { return IsJIT; }
57 
58  bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override;
59 };
60 
61 } // end namespace llvm
62 
63 #endif // LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H
llvm
Definition: AllocatorList.h:23
Optional.h
X86Subtarget.h
llvm::TargetOptions
Definition: TargetOptions.h:113
llvm::Function
Definition: Function.h:61
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:125
llvm::X86TargetMachine::createPassConfig
TargetPassConfig * createPassConfig(PassManagerBase &PM) override
Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of ...
Definition: X86TargetMachine.cpp:408
llvm::X86Subtarget
Definition: X86Subtarget.h:52
llvm::TargetTransformInfo
This pass provides access to the codegen interfaces that are needed for IR-level transformations.
Definition: TargetTransformInfo.h:167
llvm::X86TargetMachine::X86TargetMachine
X86TargetMachine(const Target &T, const Triple &TT, StringRef CPU, StringRef FS, const TargetOptions &Options, Optional< Reloc::Model > RM, Optional< CodeModel::Model > CM, CodeGenOpt::Level OL, bool JIT)
Create an X86 target.
Definition: X86TargetMachine.cpp:209
llvm::Triple
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:45
llvm::TargetMachine::RM
Reloc::Model RM
Definition: TargetMachine.h:100
llvm::Optional< Reloc::Model >
T
#define T
Definition: Mips16ISelLowering.cpp:341
F
#define F(x, y, z)
Definition: MD5.cpp:56
llvm::TargetLoweringObjectFile
Definition: TargetLoweringObjectFile.h:43
TargetMachine.h
llvm::X86TargetMachine::isNoopAddrSpaceCast
bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override
Returns true if a cast between SrcAS and DestAS is a noop.
Definition: X86TargetMachine.cpp:323
StringMap.h
llvm::StringMap
StringMap - This is an unconventional map that is specialized for handling keys that are "strings",...
Definition: StringMap.h:108
llvm::TargetPassConfig
Target-Independent Code Generator Pass Configuration Options.
Definition: TargetPassConfig.h:84
llvm::X86TargetMachine::isJIT
bool isJIT() const
Definition: X86TargetMachine.h:56
llvm::X86TargetMachine::getObjFileLowering
TargetLoweringObjectFile * getObjFileLowering() const override
Definition: X86TargetMachine.h:52
llvm::EngineKind::JIT
@ JIT
Definition: ExecutionEngine.h:525
llvm::TargetMachine::Options
TargetOptions Options
Definition: TargetMachine.h:115
llvm::X86TargetMachine
Definition: X86TargetMachine.h:28
llvm::X86TargetMachine::getSubtargetImpl
const X86Subtarget * getSubtargetImpl() const =delete
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:58
llvm::CodeGenOpt::Level
Level
Definition: CodeGen.h:52
llvm::LLVMTargetMachine
This class describes a target machine that is implemented with the LLVM target-independent code gener...
Definition: TargetMachine.h:385
llvm::X86TargetMachine::getTargetTransformInfo
TargetTransformInfo getTargetTransformInfo(const Function &F) override
Get a TargetTransformInfo implementation for the target.
Definition: X86TargetMachine.cpp:336
CodeGen.h
llvm::legacy::PassManagerBase
PassManagerBase - An abstract interface to allow code to add passes to a pass manager without having ...
Definition: LegacyPassManager.h:39
llvm::X86AS::FS
@ FS
Definition: X86.h:188
llvm::X86TargetMachine::~X86TargetMachine
~X86TargetMachine() override