llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.h

   1 //===-- WebAssemblyMCInstLower.h - Lower MachineInstr to MCInst -*- 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 file declares the class to lower WebAssembly MachineInstrs to
  11 /// their corresponding MCInst records.
  12 ///
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYMCINSTLOWER_H
  16 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYMCINSTLOWER_H
  17
  18 #include "llvm/BinaryFormat/Wasm.h"
  19 #include "llvm/MC/MCInst.h"
  20 #include "llvm/Support/Compiler.h"
  21
  22 namespace llvm {
  23 class WebAssemblyAsmPrinter;
  24 class MCContext;
  25 class MCSymbol;
  26 class MachineInstr;
  27 class MachineOperand;
  28
  29 /// This class is used to lower an MachineInstr into an MCInst.
  30 class LLVM_LIBRARY_VISIBILITY WebAssemblyMCInstLower {
  31   MCContext &Ctx;
  32   WebAssemblyAsmPrinter &Printer;
  33
  34   MCSymbol *GetGlobalAddressSymbol(const MachineOperand &MO) const;
  35   MCSymbol *GetExternalSymbolSymbol(const MachineOperand &MO) const;
  36   MCOperand lowerSymbolOperand(const MachineOperand &MO, MCSymbol *Sym) const;
  37   MCOperand lowerTypeIndexOperand(SmallVectorImpl<wasm::ValType> &&,
  38                                   SmallVectorImpl<wasm::ValType> &&) const;
  39
  40 public:
  41   WebAssemblyMCInstLower(MCContext &ctx, WebAssemblyAsmPrinter &printer)
  42       : Ctx(ctx), Printer(printer) {}
  43   void lower(const MachineInstr *MI, MCInst &OutMI) const;
  44 };
  45 } // end namespace llvm
  46
  47 #endif