xref: /freebsd-11.0-release/contrib/llvm/lib/Target/WebAssembly/WebAssemblyMCInstLower.h

//===-- WebAssemblyMCInstLower.h - Lower MachineInstr to MCInst -*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file declares the class to lower WebAssembly MachineInstrs to
/// their corresponding MCInst records.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYMCINSTLOWER_H
#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYMCINSTLOWER_H

#include "llvm/MC/MCInst.h"
#include "llvm/Support/Compiler.h"

namespace llvm {
class AsmPrinter;
class MCContext;
class MCSymbol;
class MachineInstr;
class MachineOperand;

/// This class is used to lower an MachineInstr into an MCInst.
class LLVM_LIBRARY_VISIBILITY WebAssemblyMCInstLower {
  MCContext &Ctx;
  AsmPrinter &Printer;

  MCSymbol *GetGlobalAddressSymbol(const MachineOperand &MO) const;
  MCSymbol *GetExternalSymbolSymbol(const MachineOperand &MO) const;
  MCOperand LowerSymbolOperand(MCSymbol *Sym, int64_t Offset,
                               bool IsFunc) const;

public:
  WebAssemblyMCInstLower(MCContext &ctx, AsmPrinter &printer)
      : Ctx(ctx), Printer(printer) {}
  void Lower(const MachineInstr *MI, MCInst &OutMI) const;
};
} // end namespace llvm

#endif