1 //===- llvm/unittest/IR/VerifierTest.cpp - Verifier unit tests ------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
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"
20
21 namespace llvm {
22 namespace {
23
TEST(VerifierTest,Branch_i1)24 TEST(VerifierTest, Branch_i1) {
25 LLVMContext &C = getGlobalContext();
26 Module M("M", C);
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);
32
33 // To avoid triggering an assertion in BranchInst::Create, we first create
34 // a branch with an 'i1' condition ...
35
36 Constant *False = ConstantInt::getFalse(C);
37 BranchInst *BI = BranchInst::Create(Exit, Exit, False, Entry);
38
39 // ... then use setOperand to redirect it to a value of different type.
40
41 Constant *Zero32 = ConstantInt::get(IntegerType::get(C, 32), 0);
42 BI->setOperand(0, Zero32);
43
44 EXPECT_TRUE(verifyFunction(*F));
45 }
46
TEST(VerifierTest,InvalidRetAttribute)47 TEST(VerifierTest, InvalidRetAttribute) {
48 LLVMContext &C = getGlobalContext();
49 Module M("M", C);
50 FunctionType *FTy = FunctionType::get(Type::getInt32Ty(C), /*isVarArg=*/false);
51 Function *F = cast<Function>(M.getOrInsertFunction("foo", FTy));
52 AttributeSet AS = F->getAttributes();
53 F->setAttributes(AS.addAttribute(C, AttributeSet::ReturnIndex,
54 Attribute::UWTable));
55
56 std::string Error;
57 raw_string_ostream ErrorOS(Error);
58 EXPECT_TRUE(verifyModule(M, &ErrorOS));
59 EXPECT_TRUE(StringRef(ErrorOS.str()).startswith(
60 "Attribute 'uwtable' only applies to functions!"));
61 }
62
63 }
64 }
65