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Diffstat (limited to 'unittests/IR/AsmWriterTest.cpp')
-rw-r--r-- | unittests/IR/AsmWriterTest.cpp | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/unittests/IR/AsmWriterTest.cpp b/unittests/IR/AsmWriterTest.cpp new file mode 100644 index 0000000..c7e7bb5 --- /dev/null +++ b/unittests/IR/AsmWriterTest.cpp @@ -0,0 +1,37 @@ +//===- llvm/unittest/IR/AsmWriter.cpp - AsmWriter tests -------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +#include "llvm/IR/IRBuilder.h" +#include "llvm/IR/Function.h" +#include "llvm/IR/LLVMContext.h" +#include "llvm/IR/MDBuilder.h" +#include "llvm/IR/Module.h" +#include "gtest/gtest.h" + +using namespace llvm; + +namespace { + +TEST(AsmWriterTest, DebugPrintDetachedInstruction) { + + // PR24852: Ensure that an instruction can be printed even when it + // has metadata attached but no parent. + LLVMContext Ctx; + auto Ty = Type::getInt32Ty(Ctx); + auto Undef = UndefValue::get(Ty); + std::unique_ptr<BinaryOperator> Add(BinaryOperator::CreateAdd(Undef, Undef)); + Add->setMetadata( + "", MDNode::get(Ctx, {ConstantAsMetadata::get(ConstantInt::get(Ty, 1))})); + std::string S; + raw_string_ostream OS(S); + Add->print(OS); + std::size_t r = OS.str().find("<badref> = add i32 undef, undef, !<empty"); + EXPECT_TRUE(r != std::string::npos); +} + +} |