1 //===- llvm/unittest/IR/VerifierTest.cpp - Verifier unit tests ------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/IR/Verifier.h"
11 #include "llvm/IR/Constants.h"
12 #include "llvm/IR/DerivedTypes.h"
13 #include "llvm/IR/Function.h"
14 #include "llvm/IR/GlobalAlias.h"
15 #include "llvm/IR/GlobalVariable.h"
16 #include "llvm/IR/Instructions.h"
17 #include "llvm/IR/LLVMContext.h"
18 #include "llvm/IR/Module.h"
19 #include "gtest/gtest.h"
24 TEST(VerifierTest, Branch_i1) {
25 LLVMContext &C = getGlobalContext();
27 FunctionType *FTy = FunctionType::get(Type::getVoidTy(C), /*isVarArg=*/false);
28 Function *F = cast<Function>(M.getOrInsertFunction("foo", FTy));
29 BasicBlock *Entry = BasicBlock::Create(C, "entry", F);
30 BasicBlock *Exit = BasicBlock::Create(C, "exit", F);
31 ReturnInst::Create(C, Exit);
33 // To avoid triggering an assertion in BranchInst::Create, we first create
34 // a branch with an 'i1' condition ...
36 Constant *False = ConstantInt::getFalse(C);
37 BranchInst *BI = BranchInst::Create(Exit, Exit, False, Entry);
39 // ... then use setOperand to redirect it to a value of different type.
41 Constant *Zero32 = ConstantInt::get(IntegerType::get(C, 32), 0);
42 BI->setOperand(0, Zero32);
44 EXPECT_TRUE(verifyFunction(*F));
47 TEST(VerifierTest, AliasUnnamedAddr) {
48 LLVMContext &C = getGlobalContext();
50 Type *Ty = Type::getInt8Ty(C);
51 Constant *Init = Constant::getNullValue(Ty);
52 GlobalVariable *Aliasee = new GlobalVariable(M, Ty, true,
53 GlobalValue::ExternalLinkage,
55 GlobalAlias *GA = new GlobalAlias(Type::getInt8PtrTy(C),
56 GlobalValue::ExternalLinkage,
58 GA->setUnnamedAddr(true);
60 raw_string_ostream ErrorOS(Error);
61 EXPECT_TRUE(verifyModule(M, &ErrorOS));
63 StringRef(ErrorOS.str()).startswith("Alias cannot have unnamed_addr"));
66 TEST(VerifierTest, InvalidRetAttribute) {
67 LLVMContext &C = getGlobalContext();
69 FunctionType *FTy = FunctionType::get(Type::getInt32Ty(C), /*isVarArg=*/false);
70 Function *F = cast<Function>(M.getOrInsertFunction("foo", FTy));
71 AttributeSet AS = F->getAttributes();
72 F->setAttributes(AS.addAttribute(C, AttributeSet::ReturnIndex,
76 raw_string_ostream ErrorOS(Error);
77 EXPECT_TRUE(verifyModule(M, &ErrorOS));
78 EXPECT_TRUE(StringRef(ErrorOS.str()).startswith(
79 "Attribute 'uwtable' only applies to functions!"));