LLVM  8.0.0svn
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 /// 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  bool HasExceptionHandling;
37 
38  /// String name of used CPU.
39  std::string CPUString;
40 
41  /// What processor and OS we're targeting.
42  Triple TargetTriple;
43 
44  WebAssemblyFrameLowering FrameLowering;
45  WebAssemblyInstrInfo InstrInfo;
48 
49  /// Initializes using CPUString and the passed in feature string so that we
50  /// can use initializer lists for subtarget initialization.
51  WebAssemblySubtarget &initializeSubtargetDependencies(StringRef FS);
52 
53 public:
54  /// This constructor initializes the data members to match that
55  /// of the specified triple.
56  WebAssemblySubtarget(const Triple &TT, const std::string &CPU,
57  const std::string &FS, const TargetMachine &TM);
58 
60  return &TSInfo;
61  }
62  const WebAssemblyFrameLowering *getFrameLowering() const override {
63  return &FrameLowering;
64  }
65  const WebAssemblyTargetLowering *getTargetLowering() const override {
66  return &TLInfo;
67  }
68  const WebAssemblyInstrInfo *getInstrInfo() const override {
69  return &InstrInfo;
70  }
71  const WebAssemblyRegisterInfo *getRegisterInfo() const override {
72  return &getInstrInfo()->getRegisterInfo();
73  }
74  const Triple &getTargetTriple() const { return TargetTriple; }
75  bool enableMachineScheduler() const override;
76  bool useAA() const override;
77 
78  // Predicates used by WebAssemblyInstrInfo.td.
79  bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
80  bool hasSIMD128() const { return HasSIMD128; }
81  bool hasAtomics() const { return HasAtomics; }
82  bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
83  bool hasSignExt() const { return HasSignExt; }
84  bool hasExceptionHandling() const { return HasExceptionHandling; }
85 
86  /// Parses features string setting specified subtarget options. Definition of
87  /// function is auto generated by tblgen.
89 };
90 
91 } // end namespace llvm
92 
93 #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:1272
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