LLVM  7.0.0svn
WebAssemblySubtarget.h
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1 //=- WebAssemblySubtarget.h - Define Subtarget for the WebAssembly -*- C++ -*-//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 ///
10 /// \file
11 /// \brief This file declares the WebAssembly-specific subclass of
12 /// TargetSubtarget.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H
17 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H
18 
21 #include "WebAssemblyInstrInfo.h"
24 #include <string>
25 
26 #define GET_SUBTARGETINFO_HEADER
27 #include "WebAssemblyGenSubtargetInfo.inc"
28 
29 namespace llvm {
30 
32  bool HasSIMD128;
33  bool HasAtomics;
34  bool HasNontrappingFPToInt;
35  bool HasSignExt;
36 
37  /// String name of used CPU.
38  std::string CPUString;
39 
40  /// What processor and OS we're targeting.
41  Triple TargetTriple;
42 
43  WebAssemblyFrameLowering FrameLowering;
44  WebAssemblyInstrInfo InstrInfo;
47 
48  /// Initializes using CPUString and the passed in feature string so that we
49  /// can use initializer lists for subtarget initialization.
50  WebAssemblySubtarget &initializeSubtargetDependencies(StringRef FS);
51 
52 public:
53  /// This constructor initializes the data members to match that
54  /// of the specified triple.
55  WebAssemblySubtarget(const Triple &TT, const std::string &CPU,
56  const std::string &FS, const TargetMachine &TM);
57 
59  return &TSInfo;
60  }
61  const WebAssemblyFrameLowering *getFrameLowering() const override {
62  return &FrameLowering;
63  }
64  const WebAssemblyTargetLowering *getTargetLowering() const override {
65  return &TLInfo;
66  }
67  const WebAssemblyInstrInfo *getInstrInfo() const override {
68  return &InstrInfo;
69  }
70  const WebAssemblyRegisterInfo *getRegisterInfo() const override {
71  return &getInstrInfo()->getRegisterInfo();
72  }
73  const Triple &getTargetTriple() const { return TargetTriple; }
74  bool enableMachineScheduler() const override;
75  bool useAA() const override;
76 
77  // Predicates used by WebAssemblyInstrInfo.td.
78  bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
79  bool hasSIMD128() const { return HasSIMD128; }
80  bool hasAtomics() const { return HasAtomics; }
81  bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
82  bool hasSignExt() const { return HasSignExt; }
83 
84  /// Parses features string setting specified subtarget options. Definition of
85  /// function is auto generated by tblgen.
87 };
88 
89 } // end namespace llvm
90 
91 #endif
This file defines the interfaces that WebAssembly uses to lower LLVM code into a selection DAG...
bool enableMachineScheduler() const override
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
const WebAssemblyRegisterInfo & getRegisterInfo() const
const WebAssemblyFrameLowering * getFrameLowering() const override
void ParseSubtargetFeatures(StringRef CPU, StringRef FS)
Parses features string setting specified subtarget options.
const Triple & getTargetTriple() const
const WebAssemblySelectionDAGInfo * getSelectionDAGInfo() const override
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
const WebAssemblyTargetLowering * getTargetLowering() const override
This file contains the WebAssembly implementation of the TargetInstrInfo class.
This file defines the WebAssembly subclass for SelectionDAGTargetInfo.
const WebAssemblyRegisterInfo * getRegisterInfo() const override
This class implements WebAssembly-specific bits of TargetFrameLowering class.
bool isArch64Bit() const
Test whether the architecture is 64-bit.
Definition: Triple.cpp:1245
WebAssemblySubtarget(const Triple &TT, const std::string &CPU, const std::string &FS, const TargetMachine &TM)
This constructor initializes the data members to match that of the specified triple.
Primary interface to the complete machine description for the target machine.
Definition: TargetMachine.h:59
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:49
const WebAssemblyInstrInfo * getInstrInfo() const override