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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 "gmock/gmock.h"
#include "gtest/gtest.h"
using namespace llvm;
using ::testing::HasSubstr;
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 Poison = PoisonValue::get(Ty);
std::unique_ptr<BinaryOperator> Add(BinaryOperator::CreateAdd(Poison, Poison));
Add->setMetadata(
"", MDNode::get(Ctx, {ConstantAsMetadata::get(ConstantInt::get(Ty, 1))}));
std::string S;
raw_string_ostream OS(S);
Add->print(OS);
EXPECT_THAT(S, HasSubstr("<badref> = add i32 poison, poison, !<empty"));
}
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)", S);
}
TEST(AsmWriterTest, PrintAddrspaceWithNullOperand) {
LLVMContext Ctx;
Module M("test module", Ctx);
SmallVector<Type *, 3> FArgTypes;
FArgTypes.push_back(Type::getInt64Ty(Ctx));
FunctionType *FTy = FunctionType::get(Type::getVoidTy(Ctx), FArgTypes, false);
Function *F = Function::Create(FTy, Function::ExternalLinkage, "", &M);
Argument *Arg0 = F->getArg(0);
Value *Args[] = {Arg0};
std::unique_ptr<CallInst> Call(CallInst::Create(F, Args));
// This will make Call's operand null.
Call->dropAllReferences();
std::string S;
raw_string_ostream OS(S);
Call->print(OS);
EXPECT_THAT(S, HasSubstr("<cannot get addrspace!>"));
}
TEST(AsmWriterTest, PrintNullOperandBundle) {
LLVMContext C;
Type *Int32Ty = Type::getInt32Ty(C);
FunctionType *FnTy = FunctionType::get(Int32Ty, Int32Ty, /*isVarArg=*/false);
Value *Callee = Constant::getNullValue(PointerType::getUnqual(C));
Value *Args[] = {ConstantInt::get(Int32Ty, 42)};
std::unique_ptr<BasicBlock> NormalDest(BasicBlock::Create(C));
std::unique_ptr<BasicBlock> UnwindDest(BasicBlock::Create(C));
OperandBundleDef Bundle("bundle", UndefValue::get(Int32Ty));
std::unique_ptr<InvokeInst> Invoke(
InvokeInst::Create(FnTy, Callee, NormalDest.get(), UnwindDest.get(), Args,
Bundle, "result"));
// Makes the operand bundle null.
Invoke->dropAllReferences();
Invoke->setNormalDest(NormalDest.get());
Invoke->setUnwindDest(UnwindDest.get());
std::string S;
raw_string_ostream OS(S);
Invoke->print(OS);
EXPECT_THAT(S, HasSubstr("<null operand bundle!>"));
}
}
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