2020-09-15 12:29:48 +08:00
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//===- llvm/unittest/CodeGen/AsmPrinterDwarfTest.cpp ----------------------===//
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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/CodeGen/AsmPrinter.h"
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2020-11-03 21:54:51 +08:00
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/PassManager.h"
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2020-09-15 12:29:48 +08:00
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCSectionELF.h"
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2020-11-03 21:54:51 +08:00
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#include "llvm/Target/TargetMachine.h"
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2020-09-15 12:29:48 +08:00
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#include "llvm/Testing/Support/Error.h"
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using namespace llvm;
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using testing::_;
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2020-09-15 12:30:10 +08:00
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using testing::InSequence;
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2020-09-15 12:29:48 +08:00
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using testing::SaveArg;
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namespace {
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class AsmPrinterFixtureBase : public testing::Test {
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void setupTestPrinter(const std::string &TripleStr, unsigned DwarfVersion,
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dwarf::DwarfFormat DwarfFormat) {
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auto ExpectedTestPrinter =
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TestAsmPrinter::create(TripleStr, DwarfVersion, DwarfFormat);
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ASSERT_THAT_EXPECTED(ExpectedTestPrinter, Succeeded());
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TestPrinter = std::move(ExpectedTestPrinter.get());
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}
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protected:
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bool init(const std::string &TripleStr, unsigned DwarfVersion,
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dwarf::DwarfFormat DwarfFormat) {
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setupTestPrinter(TripleStr, DwarfVersion, DwarfFormat);
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return TestPrinter != nullptr;
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}
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std::unique_ptr<TestAsmPrinter> TestPrinter;
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};
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class AsmPrinterEmitDwarfSymbolReferenceTest : public AsmPrinterFixtureBase {
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protected:
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bool init(const std::string &TripleStr, unsigned DwarfVersion,
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dwarf::DwarfFormat DwarfFormat) {
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if (!AsmPrinterFixtureBase::init(TripleStr, DwarfVersion, DwarfFormat))
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return false;
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2021-02-26 09:39:45 +08:00
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// AsmPrinter::emitDwarfSymbolReference(Label, true) gets the associated
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// section from `Label` to find its BeginSymbol.
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// Prepare the test symbol `Val` accordingly.
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2020-09-15 12:29:48 +08:00
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Val = TestPrinter->getCtx().createTempSymbol();
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MCSection *Sec =
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TestPrinter->getCtx().getELFSection(".tst", ELF::SHT_PROGBITS, 0);
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2020-09-15 12:29:48 +08:00
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SecBeginSymbol = Sec->getBeginSymbol();
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TestPrinter->getMS().SwitchSection(Sec);
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Val->setFragment(&Sec->getDummyFragment());
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2020-09-15 12:29:48 +08:00
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return true;
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}
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MCSymbol *Val = nullptr;
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MCSymbol *SecBeginSymbol = nullptr;
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};
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TEST_F(AsmPrinterEmitDwarfSymbolReferenceTest, COFF) {
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if (!init("x86_64-pc-windows", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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EXPECT_CALL(TestPrinter->getMS(), EmitCOFFSecRel32(Val, 0));
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TestPrinter->getAP()->emitDwarfSymbolReference(Val, false);
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}
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TEST_F(AsmPrinterEmitDwarfSymbolReferenceTest, COFFForceOffset) {
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if (!init("x86_64-pc-windows", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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EXPECT_CALL(TestPrinter->getMS(),
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emitAbsoluteSymbolDiff(Val, SecBeginSymbol, 4));
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TestPrinter->getAP()->emitDwarfSymbolReference(Val, true);
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}
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TEST_F(AsmPrinterEmitDwarfSymbolReferenceTest, ELFDWARF32) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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const MCExpr *Arg0 = nullptr;
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EXPECT_CALL(TestPrinter->getMS(), emitValueImpl(_, 4, _))
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.WillOnce(SaveArg<0>(&Arg0));
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TestPrinter->getAP()->emitDwarfSymbolReference(Val, false);
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const MCSymbolRefExpr *ActualArg0 = dyn_cast_or_null<MCSymbolRefExpr>(Arg0);
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ASSERT_NE(ActualArg0, nullptr);
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EXPECT_EQ(&(ActualArg0->getSymbol()), Val);
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}
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TEST_F(AsmPrinterEmitDwarfSymbolReferenceTest, ELFDWARF32ForceOffset) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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EXPECT_CALL(TestPrinter->getMS(),
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emitAbsoluteSymbolDiff(Val, SecBeginSymbol, 4));
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TestPrinter->getAP()->emitDwarfSymbolReference(Val, true);
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}
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TEST_F(AsmPrinterEmitDwarfSymbolReferenceTest, ELFDWARF64) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
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return;
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const MCExpr *Arg0 = nullptr;
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EXPECT_CALL(TestPrinter->getMS(), emitValueImpl(_, 8, _))
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.WillOnce(SaveArg<0>(&Arg0));
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TestPrinter->getAP()->emitDwarfSymbolReference(Val, false);
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const MCSymbolRefExpr *ActualArg0 = dyn_cast_or_null<MCSymbolRefExpr>(Arg0);
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ASSERT_NE(ActualArg0, nullptr);
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EXPECT_EQ(&(ActualArg0->getSymbol()), Val);
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}
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TEST_F(AsmPrinterEmitDwarfSymbolReferenceTest, ELFDWARF64ForceOffset) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
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return;
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EXPECT_CALL(TestPrinter->getMS(),
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emitAbsoluteSymbolDiff(Val, SecBeginSymbol, 8));
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TestPrinter->getAP()->emitDwarfSymbolReference(Val, true);
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}
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class AsmPrinterEmitDwarfStringOffsetTest : public AsmPrinterFixtureBase {
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protected:
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bool init(const std::string &TripleStr, unsigned DwarfVersion,
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dwarf::DwarfFormat DwarfFormat) {
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if (!AsmPrinterFixtureBase::init(TripleStr, DwarfVersion, DwarfFormat))
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return false;
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Val.Index = DwarfStringPoolEntry::NotIndexed;
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Val.Symbol = TestPrinter->getCtx().createTempSymbol();
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Val.Offset = 42;
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return true;
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}
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DwarfStringPoolEntry Val;
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};
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TEST_F(AsmPrinterEmitDwarfStringOffsetTest, DWARF32) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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const MCExpr *Arg0 = nullptr;
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EXPECT_CALL(TestPrinter->getMS(), emitValueImpl(_, 4, _))
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.WillOnce(SaveArg<0>(&Arg0));
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TestPrinter->getAP()->emitDwarfStringOffset(Val);
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const MCSymbolRefExpr *ActualArg0 = dyn_cast_or_null<MCSymbolRefExpr>(Arg0);
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ASSERT_NE(ActualArg0, nullptr);
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EXPECT_EQ(&(ActualArg0->getSymbol()), Val.Symbol);
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}
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TEST_F(AsmPrinterEmitDwarfStringOffsetTest,
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DWARF32NoRelocationsAcrossSections) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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TestPrinter->setDwarfUsesRelocationsAcrossSections(false);
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EXPECT_CALL(TestPrinter->getMS(), emitIntValue(Val.Offset, 4));
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TestPrinter->getAP()->emitDwarfStringOffset(Val);
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}
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TEST_F(AsmPrinterEmitDwarfStringOffsetTest, DWARF64) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
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return;
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const MCExpr *Arg0 = nullptr;
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EXPECT_CALL(TestPrinter->getMS(), emitValueImpl(_, 8, _))
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.WillOnce(SaveArg<0>(&Arg0));
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TestPrinter->getAP()->emitDwarfStringOffset(Val);
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const MCSymbolRefExpr *ActualArg0 = dyn_cast_or_null<MCSymbolRefExpr>(Arg0);
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ASSERT_NE(ActualArg0, nullptr);
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EXPECT_EQ(&(ActualArg0->getSymbol()), Val.Symbol);
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}
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TEST_F(AsmPrinterEmitDwarfStringOffsetTest,
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DWARF64NoRelocationsAcrossSections) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
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return;
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TestPrinter->setDwarfUsesRelocationsAcrossSections(false);
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EXPECT_CALL(TestPrinter->getMS(), emitIntValue(Val.Offset, 8));
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TestPrinter->getAP()->emitDwarfStringOffset(Val);
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}
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class AsmPrinterEmitDwarfOffsetTest : public AsmPrinterFixtureBase {
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protected:
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bool init(const std::string &TripleStr, unsigned DwarfVersion,
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dwarf::DwarfFormat DwarfFormat) {
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if (!AsmPrinterFixtureBase::init(TripleStr, DwarfVersion, DwarfFormat))
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return false;
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Label = TestPrinter->getCtx().createTempSymbol();
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return true;
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}
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MCSymbol *Label = nullptr;
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uint64_t Offset = 42;
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};
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TEST_F(AsmPrinterEmitDwarfOffsetTest, DWARF32) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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const MCExpr *Arg0 = nullptr;
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EXPECT_CALL(TestPrinter->getMS(), emitValueImpl(_, 4, _))
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.WillOnce(SaveArg<0>(&Arg0));
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TestPrinter->getAP()->emitDwarfOffset(Label, Offset);
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const MCBinaryExpr *ActualArg0 = dyn_cast_or_null<MCBinaryExpr>(Arg0);
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ASSERT_NE(ActualArg0, nullptr);
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EXPECT_EQ(ActualArg0->getOpcode(), MCBinaryExpr::Add);
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const MCSymbolRefExpr *ActualLHS =
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dyn_cast_or_null<MCSymbolRefExpr>(ActualArg0->getLHS());
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ASSERT_NE(ActualLHS, nullptr);
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EXPECT_EQ(&(ActualLHS->getSymbol()), Label);
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const MCConstantExpr *ActualRHS =
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dyn_cast_or_null<MCConstantExpr>(ActualArg0->getRHS());
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ASSERT_NE(ActualRHS, nullptr);
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EXPECT_EQ(static_cast<uint64_t>(ActualRHS->getValue()), Offset);
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}
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TEST_F(AsmPrinterEmitDwarfOffsetTest, DWARF64) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
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return;
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const MCExpr *Arg0 = nullptr;
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EXPECT_CALL(TestPrinter->getMS(), emitValueImpl(_, 8, _))
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.WillOnce(SaveArg<0>(&Arg0));
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TestPrinter->getAP()->emitDwarfOffset(Label, Offset);
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const MCBinaryExpr *ActualArg0 = dyn_cast_or_null<MCBinaryExpr>(Arg0);
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ASSERT_NE(ActualArg0, nullptr);
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EXPECT_EQ(ActualArg0->getOpcode(), MCBinaryExpr::Add);
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const MCSymbolRefExpr *ActualLHS =
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dyn_cast_or_null<MCSymbolRefExpr>(ActualArg0->getLHS());
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ASSERT_NE(ActualLHS, nullptr);
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EXPECT_EQ(&(ActualLHS->getSymbol()), Label);
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const MCConstantExpr *ActualRHS =
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dyn_cast_or_null<MCConstantExpr>(ActualArg0->getRHS());
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ASSERT_NE(ActualRHS, nullptr);
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EXPECT_EQ(static_cast<uint64_t>(ActualRHS->getValue()), Offset);
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}
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2020-09-15 12:30:10 +08:00
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class AsmPrinterEmitDwarfLengthOrOffsetTest : public AsmPrinterFixtureBase {
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protected:
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uint64_t Val = 42;
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};
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TEST_F(AsmPrinterEmitDwarfLengthOrOffsetTest, DWARF32) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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EXPECT_CALL(TestPrinter->getMS(), emitIntValue(Val, 4));
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TestPrinter->getAP()->emitDwarfLengthOrOffset(Val);
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}
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TEST_F(AsmPrinterEmitDwarfLengthOrOffsetTest, DWARF64) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
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return;
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EXPECT_CALL(TestPrinter->getMS(), emitIntValue(Val, 8));
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TestPrinter->getAP()->emitDwarfLengthOrOffset(Val);
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}
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class AsmPrinterGetUnitLengthFieldByteSizeTest : public AsmPrinterFixtureBase {
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};
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TEST_F(AsmPrinterGetUnitLengthFieldByteSizeTest, DWARF32) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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EXPECT_EQ(TestPrinter->getAP()->getUnitLengthFieldByteSize(), 4u);
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}
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TEST_F(AsmPrinterGetUnitLengthFieldByteSizeTest, DWARF64) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
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return;
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EXPECT_EQ(TestPrinter->getAP()->getUnitLengthFieldByteSize(), 12u);
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}
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class AsmPrinterEmitDwarfUnitLengthAsIntTest : public AsmPrinterFixtureBase {
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protected:
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uint64_t Val = 42;
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};
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TEST_F(AsmPrinterEmitDwarfUnitLengthAsIntTest, DWARF32) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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return;
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EXPECT_CALL(TestPrinter->getMS(), emitIntValue(Val, 4));
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TestPrinter->getAP()->emitDwarfUnitLength(Val, "");
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}
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TEST_F(AsmPrinterEmitDwarfUnitLengthAsIntTest, DWARF64) {
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
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return;
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InSequence S;
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EXPECT_CALL(TestPrinter->getMS(), emitIntValue(dwarf::DW_LENGTH_DWARF64, 4));
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EXPECT_CALL(TestPrinter->getMS(), emitIntValue(Val, 8));
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TestPrinter->getAP()->emitDwarfUnitLength(Val, "");
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}
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class AsmPrinterEmitDwarfUnitLengthAsHiLoDiffTest
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: public AsmPrinterFixtureBase {
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protected:
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bool init(const std::string &TripleStr, unsigned DwarfVersion,
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dwarf::DwarfFormat DwarfFormat) {
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if (!AsmPrinterFixtureBase::init(TripleStr, DwarfVersion, DwarfFormat))
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return false;
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return true;
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}
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};
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TEST_F(AsmPrinterEmitDwarfUnitLengthAsHiLoDiffTest, DWARF32) {
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|
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if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
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|
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return;
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|
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|
2021-02-26 09:39:45 +08:00
|
|
|
InSequence S;
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|
|
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const MCSymbol *Hi = nullptr;
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|
|
const MCSymbol *Lo = nullptr;
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|
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EXPECT_CALL(TestPrinter->getMS(), emitAbsoluteSymbolDiff(_, _, 4))
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|
|
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.WillOnce(DoAll(SaveArg<0>(&Hi), SaveArg<1>(&Lo)));
|
|
|
|
MCSymbol *LTmp = nullptr;
|
|
|
|
EXPECT_CALL(TestPrinter->getMS(), emitLabel(_, _))
|
|
|
|
.WillOnce(SaveArg<0>(<mp));
|
|
|
|
|
|
|
|
MCSymbol *HTmp = TestPrinter->getAP()->emitDwarfUnitLength("", "");
|
|
|
|
EXPECT_NE(Lo, nullptr);
|
|
|
|
EXPECT_EQ(Lo, LTmp);
|
|
|
|
EXPECT_NE(Hi, nullptr);
|
|
|
|
EXPECT_EQ(Hi, HTmp);
|
2020-09-15 12:30:10 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
TEST_F(AsmPrinterEmitDwarfUnitLengthAsHiLoDiffTest, DWARF64) {
|
|
|
|
if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF64))
|
|
|
|
return;
|
|
|
|
|
|
|
|
InSequence S;
|
2021-02-26 09:39:45 +08:00
|
|
|
const MCSymbol *Hi = nullptr;
|
|
|
|
const MCSymbol *Lo = nullptr;
|
2020-09-15 12:30:10 +08:00
|
|
|
EXPECT_CALL(TestPrinter->getMS(), emitIntValue(dwarf::DW_LENGTH_DWARF64, 4));
|
2021-02-26 09:39:45 +08:00
|
|
|
EXPECT_CALL(TestPrinter->getMS(), emitAbsoluteSymbolDiff(_, _, 8))
|
|
|
|
.WillOnce(DoAll(SaveArg<0>(&Hi), SaveArg<1>(&Lo)));
|
|
|
|
MCSymbol *LTmp = nullptr;
|
|
|
|
EXPECT_CALL(TestPrinter->getMS(), emitLabel(_, _))
|
|
|
|
.WillOnce(SaveArg<0>(<mp));
|
|
|
|
|
|
|
|
MCSymbol *HTmp = TestPrinter->getAP()->emitDwarfUnitLength("", "");
|
|
|
|
EXPECT_NE(Lo, nullptr);
|
|
|
|
EXPECT_EQ(Lo, LTmp);
|
|
|
|
EXPECT_NE(Hi, nullptr);
|
|
|
|
EXPECT_EQ(Hi, HTmp);
|
2020-09-15 12:30:10 +08:00
|
|
|
}
|
|
|
|
|
2020-11-03 21:54:51 +08:00
|
|
|
class AsmPrinterHandlerTest : public AsmPrinterFixtureBase {
|
|
|
|
class TestHandler : public AsmPrinterHandler {
|
|
|
|
AsmPrinterHandlerTest &Test;
|
|
|
|
|
|
|
|
public:
|
|
|
|
TestHandler(AsmPrinterHandlerTest &Test) : Test(Test) {}
|
|
|
|
virtual ~TestHandler() {}
|
|
|
|
virtual void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {}
|
|
|
|
virtual void beginModule(Module *M) override { Test.BeginCount++; }
|
|
|
|
virtual void endModule() override { Test.EndCount++; }
|
|
|
|
virtual void beginFunction(const MachineFunction *MF) override {}
|
|
|
|
virtual void endFunction(const MachineFunction *MF) override {}
|
|
|
|
virtual void beginInstruction(const MachineInstr *MI) override {}
|
|
|
|
virtual void endInstruction() override {}
|
|
|
|
};
|
|
|
|
|
|
|
|
protected:
|
|
|
|
bool init(const std::string &TripleStr, unsigned DwarfVersion,
|
|
|
|
dwarf::DwarfFormat DwarfFormat) {
|
|
|
|
if (!AsmPrinterFixtureBase::init(TripleStr, DwarfVersion, DwarfFormat))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
auto *AP = TestPrinter->getAP();
|
|
|
|
AP->addAsmPrinterHandler(AsmPrinter::HandlerInfo(
|
|
|
|
std::unique_ptr<AsmPrinterHandler>(new TestHandler(*this)),
|
|
|
|
"TestTimerName", "TestTimerDesc", "TestGroupName", "TestGroupDesc"));
|
|
|
|
LLVMTargetMachine *LLVMTM = static_cast<LLVMTargetMachine *>(&AP->TM);
|
|
|
|
legacy::PassManager PM;
|
|
|
|
PM.add(new MachineModuleInfoWrapperPass(LLVMTM));
|
|
|
|
PM.add(TestPrinter->releaseAP()); // Takes ownership of destroying AP
|
|
|
|
LLVMContext Context;
|
|
|
|
std::unique_ptr<Module> M(new Module("TestModule", Context));
|
|
|
|
M->setDataLayout(LLVMTM->createDataLayout());
|
|
|
|
PM.run(*M);
|
|
|
|
// Now check that we can run it twice.
|
|
|
|
AP->addAsmPrinterHandler(AsmPrinter::HandlerInfo(
|
|
|
|
std::unique_ptr<AsmPrinterHandler>(new TestHandler(*this)),
|
|
|
|
"TestTimerName", "TestTimerDesc", "TestGroupName", "TestGroupDesc"));
|
|
|
|
PM.run(*M);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
int BeginCount = 0;
|
|
|
|
int EndCount = 0;
|
|
|
|
};
|
|
|
|
|
|
|
|
TEST_F(AsmPrinterHandlerTest, Basic) {
|
|
|
|
if (!init("x86_64-pc-linux", /*DwarfVersion=*/4, dwarf::DWARF32))
|
|
|
|
return;
|
|
|
|
|
|
|
|
ASSERT_EQ(BeginCount, 3);
|
|
|
|
ASSERT_EQ(EndCount, 3);
|
|
|
|
}
|
|
|
|
|
2020-09-15 12:29:48 +08:00
|
|
|
} // end namespace
|