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[DebugInfo] Add unit test for compact expression printer
Add a unit test for the compact DWARF expression printer which will be used by the llvm-objdump --debug-vars option. Differential revision: https://reviews.llvm.org/D75250
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llvm/unittests/DebugInfo/DWARF/DWARFExpressionCompactPrinterTest.cpp
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//===- llvm/unittest/DebugInfo/DWARFExpressionCompactPrinterTest.cpp ------===// | ||
// | ||
// 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 | ||
// | ||
//===----------------------------------------------------------------------===// | ||
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#include "llvm/ADT/ArrayRef.h" | ||
#include "llvm/DebugInfo/DWARF/DWARFContext.h" | ||
#include "llvm/DebugInfo/DWARF/DWARFDie.h" | ||
#include "llvm/DebugInfo/DWARF/DWARFExpression.h" | ||
#include "llvm/MC/MCInstrInfo.h" | ||
#include "llvm/Support/DataExtractor.h" | ||
#include "llvm/Support/TargetRegistry.h" | ||
#include "llvm/Support/TargetSelect.h" | ||
#include "llvm/Testing/Support/Error.h" | ||
#include "gtest/gtest.h" | ||
#include "DwarfGenerator.h" | ||
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using namespace llvm; | ||
using namespace dwarf; | ||
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namespace { | ||
class DWARFExpressionCompactPrinterTest : public ::testing::Test { | ||
public: | ||
std::unique_ptr<MCRegisterInfo> MRI; | ||
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DWARFExpressionCompactPrinterTest() { | ||
InitializeAllTargets(); | ||
InitializeAllTargetMCs(); | ||
InitializeAllAsmPrinters(); | ||
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std::string TripleName = "armv8a-linux-gnueabi"; | ||
std::string ErrorStr; | ||
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const Target *TheTarget = | ||
TargetRegistry::lookupTarget(TripleName, ErrorStr); | ||
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if (!TheTarget) | ||
return; | ||
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MRI.reset(TheTarget->createMCRegInfo(TripleName)); | ||
} | ||
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void TestExprPrinter(ArrayRef<uint8_t> ExprData, StringRef Expected); | ||
}; | ||
} // namespace | ||
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void DWARFExpressionCompactPrinterTest::TestExprPrinter( | ||
ArrayRef<uint8_t> ExprData, StringRef Expected) { | ||
// If we didn't build ARM, do not run the test. | ||
if (!MRI) | ||
return; | ||
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// Print the expression, passing in the subprogram DIE, and check that the | ||
// result is as expected. | ||
std::string Result; | ||
raw_string_ostream OS(Result); | ||
DataExtractor DE(ExprData, true, 8); | ||
DWARFExpression Expr(DE, 8); | ||
Expr.printCompact(OS, *MRI); | ||
EXPECT_EQ(OS.str(), Expected); | ||
} | ||
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_reg0) { | ||
TestExprPrinter({DW_OP_reg0}, "R0"); | ||
} | ||
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_reg10) { | ||
TestExprPrinter({DW_OP_reg10}, "R10"); | ||
} | ||
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_regx) { | ||
TestExprPrinter({DW_OP_regx, 0x80, 0x02}, "D0"); | ||
} |