HexagonAsmPrinter.h

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//===- HexagonAsmPrinter.h - Print machine code to an Hexagon .s file -----===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Hexagon Assembly printer class.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H
#define LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H

#include "Hexagon.h"
#include "HexagonSubtarget.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/MC/MCStreamer.h"
#include <utility>

namespace llvm {

class MachineInstr;
class MCInst;
class raw_ostream;
class TargetMachine;

  class HexagonAsmPrinter : public AsmPrinter {
    const HexagonSubtarget *Subtarget = nullptr;

  public:
    explicit HexagonAsmPrinter(TargetMachine &TM,
                               std::unique_ptr<MCStreamer> Streamer)
      : AsmPrinter(TM, std::move(Streamer)) {}

    bool runOnMachineFunction(MachineFunction &Fn) override {
      Subtarget = &Fn.getSubtarget<HexagonSubtarget>();
      return AsmPrinter::runOnMachineFunction(Fn);
    }

    StringRef getPassName() const override {
      return "Hexagon Assembly Printer";
    }

    bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB)
          const override;

    void EmitInstruction(const MachineInstr *MI) override;
    void HexagonProcessInstruction(MCInst &Inst, const MachineInstr &MBB);

    void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O);
    bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
                         unsigned AsmVariant, const char *ExtraCode,
                         raw_ostream &OS) override;
    bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
                               unsigned AsmVariant, const char *ExtraCode,
                               raw_ostream &OS) override;
  };

} // end namespace llvm

#endif // LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H