llvm/lib/MC/MCSPIRVStreamer.cpp

   1 //===- lib/MC/MCSPIRVStreamer.cpp - SPIR-V Object Output ------*- 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 // This file assembles .s files and emits SPIR-V .o object files.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "llvm/MC/MCSPIRVStreamer.h"
  14 #include "llvm/MC/MCAssembler.h"
  15 #include "llvm/MC/TargetRegistry.h"
  16
  17 using namespace llvm;
  18
  19 void MCSPIRVStreamer::emitInstToData(const MCInst &Inst,
  20                                      const MCSubtargetInfo &STI) {
  21   MCAssembler &Assembler = getAssembler();
  22   SmallVector<MCFixup, 0> Fixups;
  23   SmallString<256> Code;
  24   Assembler.getEmitter().encodeInstruction(Inst, Code, Fixups, STI);
  25
  26   // Append the encoded instruction to the current data fragment (or create a
  27   // new such fragment if the current fragment is not a data fragment).
  28   MCDataFragment *DF = getOrCreateDataFragment();
  29
  30   DF->setHasInstructions(STI);
  31   DF->getContents().append(Code.begin(), Code.end());
  32 }
  33
  34 MCStreamer *llvm::createSPIRVStreamer(MCContext &Context,
  35                                       std::unique_ptr<MCAsmBackend> &&MAB,
  36                                       std::unique_ptr<MCObjectWriter> &&OW,
  37                                       std::unique_ptr<MCCodeEmitter> &&CE,
  38                                       bool RelaxAll) {
  39   MCSPIRVStreamer *S = new MCSPIRVStreamer(Context, std::move(MAB),
  40                                            std::move(OW), std::move(CE));
  41   if (RelaxAll)
  42     S->getAssembler().setRelaxAll(true);
  43   return S;
  44 }