LLVM  10.0.0svn
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 X86Subtarget;
27 class X86RegisterBankInfo;
28 class TargetTransformInfo;
29 
30 class X86TargetMachine final : public LLVMTargetMachine {
31  std::unique_ptr<TargetLoweringObjectFile> TLOF;
32  mutable StringMap<std::unique_ptr<X86Subtarget>> SubtargetMap;
33 
34 public:
35  X86TargetMachine(const Target &T, const Triple &TT, StringRef CPU,
36  StringRef FS, const TargetOptions &Options,
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 
57 } // end namespace llvm
58 
59 #endif // LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H
This class represents lattice values for constants.
Definition: AllocatorList.h:23
F(f)
Target-Independent Code Generator Pass Configuration Options.
TargetPassConfig * createPassConfig(PassManagerBase &PM) override
Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of ...
TargetLoweringObjectFile * getObjFileLowering() const override
const X86Subtarget * getSubtargetImpl() const =delete
This class describes a target machine that is implemented with the LLVM target-independent code gener...
~X86TargetMachine() override
TargetTransformInfo getTargetTransformInfo(const Function &F) override
Get a TargetTransformInfo implementation for the target.
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:43
This pass provides access to the codegen interfaces that are needed for IR-level transformations.
PassManagerBase - An abstract interface to allow code to add passes to a pass manager without having ...
StringMap - This is an unconventional map that is specialized for handling keys that are "strings"...
Definition: StringMap.h:242
Target - Wrapper for Target specific information.
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.
TargetOptions Options
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48