forked from OSchip/llvm-project
89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
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//===--- unittests/CodeGen/TestAsmPrinter.cpp -------------------*- 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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#include "TestAsmPrinter.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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#include "llvm/Target/TargetMachine.h"
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using namespace llvm;
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using ::testing::StrictMock;
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// Note: a non-const reference argument cannot be passed through
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// testing::StrictMock, thus, we pass a pointer and dereference it here.
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MockMCStreamer::MockMCStreamer(MCContext *Ctx) : MCStreamer(*Ctx) {}
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MockMCStreamer::~MockMCStreamer() = default;
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TestAsmPrinter::TestAsmPrinter() = default;
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TestAsmPrinter::~TestAsmPrinter() = default;
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llvm::Expected<std::unique_ptr<TestAsmPrinter>>
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TestAsmPrinter::create(const std::string &TripleStr, uint16_t DwarfVersion,
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dwarf::DwarfFormat DwarfFormat) {
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std::string ErrorStr;
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const Target *TheTarget = TargetRegistry::lookupTarget(TripleStr, ErrorStr);
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if (!TheTarget)
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return std::unique_ptr<TestAsmPrinter>();
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std::unique_ptr<TestAsmPrinter> TestPrinter(new TestAsmPrinter);
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if (llvm::Error E =
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TestPrinter->init(TheTarget, TripleStr, DwarfVersion, DwarfFormat))
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return std::move(E);
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return std::move(TestPrinter);
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}
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// Note:: based on dwarfgen::Generator::init() from
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// llvm/unittests/DebugInfo/DWARF/DwarfGenerator.cpp
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llvm::Error TestAsmPrinter::init(const Target *TheTarget, StringRef TripleName,
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uint16_t DwarfVersion,
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dwarf::DwarfFormat DwarfFormat) {
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TM.reset(TheTarget->createTargetMachine(TripleName, "", "", TargetOptions(),
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None));
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if (!TM)
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return make_error<StringError>("no target machine for target " + TripleName,
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inconvertibleErrorCode());
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MC.reset(new MCContext(TM->getMCAsmInfo(), TM->getMCRegisterInfo(),
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TM->getObjFileLowering()));
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TM->getObjFileLowering()->Initialize(*MC, *TM);
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MS = new StrictMock<MockMCStreamer>(MC.get());
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Asm.reset(
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TheTarget->createAsmPrinter(*TM, std::unique_ptr<MockMCStreamer>(MS)));
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if (!Asm)
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return make_error<StringError>("no asm printer for target " + TripleName,
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inconvertibleErrorCode());
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// Set the DWARF version correctly on all classes that we use.
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MC->setDwarfVersion(DwarfVersion);
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Asm->setDwarfVersion(DwarfVersion);
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// Set the DWARF format.
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MC->setDwarfFormat(DwarfFormat);
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return Error::success();
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}
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void TestAsmPrinter::setDwarfUsesRelocationsAcrossSections(bool Enable) {
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struct HackMCAsmInfo : MCAsmInfo {
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void setDwarfUsesRelocationsAcrossSections(bool Enable) {
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DwarfUsesRelocationsAcrossSections = Enable;
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}
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};
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static_cast<HackMCAsmInfo *>(const_cast<MCAsmInfo *>(TM->getMCAsmInfo()))
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->setDwarfUsesRelocationsAcrossSections(Enable);
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}
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