LLVM  12.0.0git
WebAssemblyMCTargetDesc.cpp
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1 //===-- WebAssemblyMCTargetDesc.cpp - WebAssembly Target Descriptions -----===//
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 /// \file
10 /// This file provides WebAssembly-specific target descriptions.
11 ///
12 //===----------------------------------------------------------------------===//
13 
19 #include "llvm/MC/MCInstrInfo.h"
20 #include "llvm/MC/MCRegisterInfo.h"
24 using namespace llvm;
25 
26 #define DEBUG_TYPE "wasm-mc-target-desc"
27 
28 #define GET_INSTRINFO_MC_DESC
29 #include "WebAssemblyGenInstrInfo.inc"
30 
31 #define GET_SUBTARGETINFO_MC_DESC
32 #include "WebAssemblyGenSubtargetInfo.inc"
33 
34 #define GET_REGINFO_MC_DESC
35 #include "WebAssemblyGenRegisterInfo.inc"
36 
37 static MCAsmInfo *createMCAsmInfo(const MCRegisterInfo & /*MRI*/,
38  const Triple &TT,
39  const MCTargetOptions &Options) {
40  return new WebAssemblyMCAsmInfo(TT, Options);
41 }
42 
44  auto *X = new MCInstrInfo();
45  InitWebAssemblyMCInstrInfo(X);
46  return X;
47 }
48 
49 static MCRegisterInfo *createMCRegisterInfo(const Triple & /*T*/) {
50  auto *X = new MCRegisterInfo();
51  InitWebAssemblyMCRegisterInfo(X, 0);
52  return X;
53 }
54 
56  unsigned SyntaxVariant,
57  const MCAsmInfo &MAI,
58  const MCInstrInfo &MII,
59  const MCRegisterInfo &MRI) {
60  assert(SyntaxVariant == 0 && "WebAssembly only has one syntax variant");
61  return new WebAssemblyInstPrinter(MAI, MII, MRI);
62 }
63 
65  const MCRegisterInfo & /*MRI*/,
66  MCContext &Ctx) {
67  return createWebAssemblyMCCodeEmitter(MCII);
68 }
69 
70 static MCAsmBackend *createAsmBackend(const Target & /*T*/,
71  const MCSubtargetInfo &STI,
72  const MCRegisterInfo & /*MRI*/,
73  const MCTargetOptions & /*Options*/) {
75 }
76 
78  StringRef FS) {
79  return createWebAssemblyMCSubtargetInfoImpl(TT, CPU, FS);
80 }
81 
82 static MCTargetStreamer *
84  return new WebAssemblyTargetWasmStreamer(S);
85 }
86 
89  MCInstPrinter * /*InstPrint*/,
90  bool /*isVerboseAsm*/) {
91  return new WebAssemblyTargetAsmStreamer(S, OS);
92 }
93 
95  return new WebAssemblyTargetNullStreamer(S);
96 }
97 
98 // Force static initialization.
100  for (Target *T :
102  // Register the MC asm info.
104 
105  // Register the MC instruction info.
107 
108  // Register the MC register info.
110 
111  // Register the MCInstPrinter.
113 
114  // Register the MC code emitter.
116 
117  // Register the ASM Backend.
119 
120  // Register the MC subtarget info.
122 
123  // Register the object target streamer.
126  // Register the asm target streamer.
128  // Register the null target streamer.
130  }
131 }
132 
134  switch (Ty.SimpleTy) {
135  case MVT::i32:
136  return wasm::ValType::I32;
137  case MVT::i64:
138  return wasm::ValType::I64;
139  case MVT::f32:
140  return wasm::ValType::F32;
141  case MVT::f64:
142  return wasm::ValType::F64;
143  case MVT::v16i8:
144  case MVT::v8i16:
145  case MVT::v4i32:
146  case MVT::v2i64:
147  case MVT::v4f32:
148  case MVT::v2f64:
149  return wasm::ValType::V128;
150  case MVT::exnref:
151  return wasm::ValType::EXNREF;
152  default:
153  llvm_unreachable("unexpected type");
154  }
155 }
static MCInstrInfo * createMCInstrInfo()
static GCMetadataPrinterRegistry::Add< ErlangGCPrinter > X("erlang", "erlang-compatible garbage collector")
This class represents lattice values for constants.
Definition: AllocatorList.h:23
static MCTargetStreamer * createObjectTargetStreamer(MCStreamer &S, const MCSubtargetInfo &STI)
formatted_raw_ostream - A raw_ostream that wraps another one and keeps track of line and column posit...
This class prints an WebAssembly MCInst to wasm file syntax.
Target specific streamer interface.
Definition: MCStreamer.h:90
static void RegisterMCInstPrinter(Target &T, Target::MCInstPrinterCtorTy Fn)
RegisterMCInstPrinter - Register a MCInstPrinter implementation for the given target.
static MCAsmBackend * createAsmBackend(const Target &, const MCSubtargetInfo &STI, const MCRegisterInfo &, const MCTargetOptions &)
static void RegisterAsmTargetStreamer(Target &T, Target::AsmTargetStreamerCtorTy Fn)
const Triple & getTargetTriple() const
This file registers the WebAssembly target.
SimpleValueType SimpleTy
Context object for machine code objects.
Definition: MCContext.h:67
wasm::ValType toValType(const MVT &Ty)
MCRegisterInfo base class - We assume that the target defines a static array of MCRegisterDesc object...
This class is intended to be used as a base class for asm properties and features specific to the tar...
Definition: MCAsmInfo.h:56
static MCTargetStreamer * createAsmTargetStreamer(MCStreamer &S, formatted_raw_ostream &OS, MCInstPrinter *, bool)
static void RegisterMCAsmBackend(Target &T, Target::MCAsmBackendCtorTy Fn)
RegisterMCAsmBackend - Register a MCAsmBackend implementation for the given target.
Streaming machine code generation interface.
Definition: MCStreamer.h:196
unsigned const MachineRegisterInfo * MRI
Machine Value Type.
MCCodeEmitter * createWebAssemblyMCCodeEmitter(const MCInstrInfo &MCII)
MCCodeEmitter - Generic instruction encoding interface.
Definition: MCCodeEmitter.h:21
This file provides WebAssembly-specific target descriptions.
Interface to description of machine instruction set.
Definition: MCInstrInfo.h:25
static MCRegisterInfo * createMCRegisterInfo(const Triple &)
static MCCodeEmitter * createCodeEmitter(const MCInstrInfo &MCII, const MCRegisterInfo &, MCContext &Ctx)
This part is for ascii assembly output.
static MCAsmInfo * createMCAsmInfo(const MCRegisterInfo &, const Triple &TT, const MCTargetOptions &Options)
static void RegisterMCSubtargetInfo(Target &T, Target::MCSubtargetInfoCtorFnTy Fn)
RegisterMCSubtargetInfo - Register a MCSubtargetInfo implementation for the given target...
static void RegisterObjectTargetStreamer(Target &T, Target::ObjectTargetStreamerCtorTy Fn)
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:45
This file declares WebAssembly-specific target streamer classes.
static MCSubtargetInfo * createMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS)
static MCTargetStreamer * createNullTargetStreamer(MCStreamer &S)
static void RegisterMCCodeEmitter(Target &T, Target::MCCodeEmitterCtorTy Fn)
RegisterMCCodeEmitter - Register a MCCodeEmitter implementation for the given target.
#define LLVM_EXTERNAL_VISIBILITY
Definition: Compiler.h:131
MCAsmBackend * createWebAssemblyAsmBackend(const Triple &TT)
static void RegisterMCRegInfo(Target &T, Target::MCRegInfoCtorFnTy Fn)
RegisterMCRegInfo - Register a MCRegisterInfo implementation for the given target.
Target - Wrapper for Target specific information.
This file contains the declaration of the WebAssemblyMCAsmInfo class.
This is an instance of a target assembly language printer that converts an MCInst to valid target ass...
Definition: MCInstPrinter.h:42
static void RegisterMCInstrInfo(Target &T, Target::MCInstrInfoCtorFnTy Fn)
RegisterMCInstrInfo - Register a MCInstrInfo implementation for the given target. ...
This part is for Wasm object output.
Generic base class for all target subtargets.
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
static MCInstPrinter * createMCInstPrinter(const Triple &, unsigned SyntaxVariant, const MCAsmInfo &MAI, const MCInstrInfo &MII, const MCRegisterInfo &MRI)
RegisterMCAsmInfoFn - Helper template for registering a target assembly info implementation.
static void RegisterNullTargetStreamer(Target &T, Target::NullTargetStreamerCtorTy Fn)
Generic interface to target specific assembler backends.
Definition: MCAsmBackend.h:36
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:57
Target & getTheWebAssemblyTarget32()
Target & getTheWebAssemblyTarget64()
LLVM_EXTERNAL_VISIBILITY void LLVMInitializeWebAssemblyTargetMC()