LLVM  12.0.0git
WebAssemblyInstPrinter.h
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1 // WebAssemblyInstPrinter.h - Print wasm MCInst to assembly syntax -*- 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 /// \file
10 /// This class prints an WebAssembly MCInst to wasm file syntax.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_INSTPRINTER_WEBASSEMBLYINSTPRINTER_H
15 #define LLVM_LIB_TARGET_WEBASSEMBLY_INSTPRINTER_WEBASSEMBLYINSTPRINTER_H
16 
17 #include "llvm/ADT/SmallVector.h"
18 #include "llvm/BinaryFormat/Wasm.h"
19 #include "llvm/MC/MCInstPrinter.h"
21 
22 namespace llvm {
23 
24 class MCSubtargetInfo;
25 
26 class WebAssemblyInstPrinter final : public MCInstPrinter {
27  uint64_t ControlFlowCounter = 0;
28  uint64_t EHPadStackCounter = 0;
29  SmallVector<std::pair<uint64_t, bool>, 4> ControlFlowStack;
30  SmallVector<uint64_t, 4> EHPadStack;
31 
32  enum EHInstKind { TRY, CATCH, END_TRY };
33  EHInstKind LastSeenEHInst = END_TRY;
34 
35 public:
37  const MCRegisterInfo &MRI);
38 
39  void printRegName(raw_ostream &OS, unsigned RegNo) const override;
40  void printInst(const MCInst *MI, uint64_t Address, StringRef Annot,
41  const MCSubtargetInfo &STI, raw_ostream &OS) override;
42 
43  // Used by tblegen code.
44  void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O,
45  bool IsVariadicDef = false);
46  void printBrList(const MCInst *MI, unsigned OpNo, raw_ostream &O);
47  void printWebAssemblyP2AlignOperand(const MCInst *MI, unsigned OpNo,
48  raw_ostream &O);
49  void printWebAssemblySignatureOperand(const MCInst *MI, unsigned OpNo,
50  raw_ostream &O);
51 
52  // Autogenerated by tblgen.
53  void printInstruction(const MCInst *MI, uint64_t Address, raw_ostream &O);
54  static const char *getRegisterName(unsigned RegNo);
55 };
56 
57 namespace WebAssembly {
58 
59 const char *typeToString(wasm::ValType Ty);
60 const char *anyTypeToString(unsigned Ty);
61 
63 std::string signatureToString(const wasm::WasmSignature *Sig);
64 
65 } // end namespace WebAssembly
66 
67 } // end namespace llvm
68 
69 #endif
void printWebAssemblySignatureOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O)
This class represents lattice values for constants.
Definition: AllocatorList.h:23
void printWebAssemblyP2AlignOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O)
void printInstruction(const MCInst *MI, uint64_t Address, raw_ostream &O)
void printRegName(raw_ostream &OS, unsigned RegNo) const override
Print the assembler register name.
const char * anyTypeToString(unsigned Ty)
WebAssemblyInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII, const MCRegisterInfo &MRI)
std::string signatureToString(const wasm::WasmSignature *Sig)
void printBrList(const MCInst *MI, unsigned OpNo, raw_ostream &O)
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory)...
Definition: APInt.h:32
void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O, bool IsVariadicDef=false)
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:158
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
void printInst(const MCInst *MI, uint64_t Address, StringRef Annot, const MCSubtargetInfo &STI, raw_ostream &OS) override
Print the specified MCInst to the specified raw_ostream.
std::string typeListToString(ArrayRef< wasm::ValType > List)
Interface to description of machine instruction set.
Definition: MCInstrInfo.h:25
This is a &#39;vector&#39; (really, a variable-sized array), optimized for the case when the array is small...
Definition: SmallVector.h:883
const MCAsmInfo & MAI
Definition: MCInstPrinter.h:48
This is an instance of a target assembly language printer that converts an MCInst to valid target ass...
Definition: MCInstPrinter.h:42
Generic base class for all target subtargets.
const MCInstrInfo & MII
Definition: MCInstPrinter.h:49
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:46
static const char * getRegisterName(unsigned RegNo)
IRTranslator LLVM IR MI
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:57
const char * typeToString(wasm::ValType Ty)
const MCRegisterInfo & MRI
Definition: MCInstPrinter.h:50