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//===- llvm/unittest/IR/AsmWriter.cpp - AsmWriter tests -------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.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);
}
TEST(AsmWriterTest, DebugPrintDetachedArgument) {
LLVMContext Ctx;
auto Ty = Type::getInt32Ty(Ctx);
auto Arg = new Argument(Ty);
std::string S;
raw_string_ostream OS(S);
Arg->print(OS);
EXPECT_EQ(S, "i32 <badref>");
delete Arg;
}
TEST(AsmWriterTest, DumpDIExpression) {
LLVMContext Ctx;
uint64_t Ops[] = {
dwarf::DW_OP_constu, 4,
dwarf::DW_OP_minus,
dwarf::DW_OP_deref,
};
DIExpression *Expr = DIExpression::get(Ctx, Ops);
std::string S;
raw_string_ostream OS(S);
Expr->print(OS);
EXPECT_EQ("!DIExpression(DW_OP_constu, 4, DW_OP_minus, DW_OP_deref)",
OS.str());
}
}
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