forked from OSchip/llvm-project
58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
//===-- DirectXAsmPrinter.cpp - DirectX assembly writer --------*- C++ -*--===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains AsmPrinters for the DirectX backend.
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//
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//===----------------------------------------------------------------------===//
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#include "TargetInfo/DirectXTargetInfo.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/IR/GlobalVariable.h"
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#include "llvm/IR/Module.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/SectionKind.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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using namespace llvm;
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#define DEBUG_TYPE "asm-printer"
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namespace {
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// The DXILAsmPrinter is mostly a stub because DXIL is just LLVM bitcode which
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// gets embedded into a DXContainer file.
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class DXILAsmPrinter : public AsmPrinter {
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public:
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explicit DXILAsmPrinter(TargetMachine &TM,
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std::unique_ptr<MCStreamer> Streamer)
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: AsmPrinter(TM, std::move(Streamer)) {}
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StringRef getPassName() const override { return "DXIL Assembly Printer"; }
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void emitGlobalVariable(const GlobalVariable *GV) override;
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bool runOnMachineFunction(MachineFunction &MF) override { return false; }
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};
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} // namespace
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void DXILAsmPrinter::emitGlobalVariable(const GlobalVariable *GV) {
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// If there is no initializer or the section is implicit, do nothing
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if (!GV->hasInitializer() || GV->hasImplicitSection())
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return;
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// Skip the LLVM metadata
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if (GV->getSection() == "llvm.metadata")
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return;
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SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, TM);
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MCSection *TheSection = getObjFileLowering().SectionForGlobal(GV, GVKind, TM);
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OutStreamer->switchSection(TheSection);
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emitGlobalConstant(GV->getParent()->getDataLayout(), GV->getInitializer());
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}
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extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeDirectXAsmPrinter() {
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RegisterAsmPrinter<DXILAsmPrinter> X(getTheDirectXTarget());
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}
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