File: MCSPIRVStreamer.cpp

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//===- lib/MC/MCSPIRVStreamer.cpp - SPIR-V Object Output ------*- C++ -*---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file assembles .s files and emits SPIR-V .o object files.
//
//===----------------------------------------------------------------------===//

#include "llvm/MC/MCSPIRVStreamer.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/TargetRegistry.h"

using namespace llvm;

void MCSPIRVStreamer::emitInstToData(const MCInst &Inst,
                                     const MCSubtargetInfo &STI) {
  MCAssembler &Assembler = getAssembler();
  SmallVector<MCFixup, 0> Fixups;
  SmallString<256> Code;
  raw_svector_ostream VecOS(Code);
  Assembler.getEmitter().encodeInstruction(Inst, VecOS, Fixups, STI);

  // Append the encoded instruction to the current data fragment (or create a
  // new such fragment if the current fragment is not a data fragment).
  MCDataFragment *DF = getOrCreateDataFragment();

  DF->setHasInstructions(STI);
  DF->getContents().append(Code.begin(), Code.end());
}

MCStreamer *llvm::createSPIRVStreamer(MCContext &Context,
                                      std::unique_ptr<MCAsmBackend> &&MAB,
                                      std::unique_ptr<MCObjectWriter> &&OW,
                                      std::unique_ptr<MCCodeEmitter> &&CE,
                                      bool RelaxAll) {
  MCSPIRVStreamer *S = new MCSPIRVStreamer(Context, std::move(MAB),
                                           std::move(OW), std::move(CE));
  if (RelaxAll)
    S->getAssembler().setRelaxAll(true);
  return S;
}