| //===-- SPIRVAsmBackend.cpp - SPIR-V Assembler Backend ---------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "MCTargetDesc/SPIRVMCTargetDesc.h" |
| #include "llvm/MC/MCAsmBackend.h" |
| #include "llvm/MC/MCAssembler.h" |
| #include "llvm/MC/MCObjectWriter.h" |
| #include "llvm/Support/EndianStream.h" |
| |
| using namespace llvm; |
| |
| namespace { |
| |
| class SPIRVAsmBackend : public MCAsmBackend { |
| public: |
| SPIRVAsmBackend(support::endianness Endian) : MCAsmBackend(Endian) {} |
| |
| void applyFixup(const MCAssembler &Asm, const MCFixup &Fixup, |
| const MCValue &Target, MutableArrayRef<char> Data, |
| uint64_t Value, bool IsResolved, |
| const MCSubtargetInfo *STI) const override {} |
| |
| std::unique_ptr<MCObjectTargetWriter> |
| createObjectTargetWriter() const override { |
| return createSPIRVObjectTargetWriter(); |
| } |
| |
| // No instruction requires relaxation. |
| bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value, |
| const MCRelaxableFragment *DF, |
| const MCAsmLayout &Layout) const override { |
| return false; |
| } |
| |
| unsigned getNumFixupKinds() const override { return 1; } |
| |
| bool mayNeedRelaxation(const MCInst &Inst, |
| const MCSubtargetInfo &STI) const override { |
| return false; |
| } |
| |
| void relaxInstruction(MCInst &Inst, |
| const MCSubtargetInfo &STI) const override {} |
| |
| bool writeNopData(raw_ostream &OS, uint64_t Count, |
| const MCSubtargetInfo *STI) const override { |
| return false; |
| } |
| }; |
| |
| } // end anonymous namespace |
| |
| MCAsmBackend *llvm::createSPIRVAsmBackend(const Target &T, |
| const MCSubtargetInfo &STI, |
| const MCRegisterInfo &MRI, |
| const MCTargetOptions &) { |
| return new SPIRVAsmBackend(support::little); |
| } |