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/Analysis/Verifier.h" 11 #include "llvm/ADT/OwningPtr.h" 12 #include "llvm/IR/Constants.h" 13 #include "llvm/IR/DerivedTypes.h" 14 #include "llvm/IR/Function.h" 15 #include "llvm/IR/GlobalAlias.h" 16 #include "llvm/IR/GlobalVariable.h" 17 #include "llvm/IR/Instructions.h" 18 #include "llvm/IR/LLVMContext.h" 19 #include "llvm/IR/Module.h" 20 #include "gtest/gtest.h" 21 22 namespace llvm { 23 namespace { 24 25 TEST(VerifierTest, Branch_i1) { 26 LLVMContext &C = getGlobalContext(); 27 FunctionType *FTy = FunctionType::get(Type::getVoidTy(C), /*isVarArg=*/false); 28 OwningPtr<Function> F(Function::Create(FTy, GlobalValue::ExternalLinkage)); 29 BasicBlock *Entry = BasicBlock::Create(C, "entry", F.get()); 30 BasicBlock *Exit = BasicBlock::Create(C, "exit", F.get()); 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, ReturnStatusAction)); 45 } 46 47 TEST(VerifierTest, AliasUnnamedAddr) { 48 LLVMContext &C = getGlobalContext(); 49 Module M("M", C); 50 Type *Ty = Type::getInt8Ty(C); 51 Constant *Init = Constant::getNullValue(Ty); 52 GlobalVariable *Aliasee = new GlobalVariable(M, Ty, true, 53 GlobalValue::ExternalLinkage, 54 Init, "foo"); 55 GlobalAlias *GA = new GlobalAlias(Type::getInt8PtrTy(C), 56 GlobalValue::ExternalLinkage, 57 "bar", Aliasee, &M); 58 GA->setUnnamedAddr(true); 59 std::string Error; 60 EXPECT_TRUE(verifyModule(M, ReturnStatusAction, &Error)); 61 EXPECT_TRUE(StringRef(Error).startswith("Alias cannot have unnamed_addr")); 62 } 63 64 TEST(VerifierTest, InvalidRetAttribute) { 65 LLVMContext &C = getGlobalContext(); 66 Module M("M", C); 67 FunctionType *FTy = FunctionType::get(Type::getInt32Ty(C), /*isVarArg=*/false); 68 Function *F = cast<Function>(M.getOrInsertFunction("foo", FTy)); 69 AttributeSet AS = F->getAttributes(); 70 F->setAttributes(AS.addAttribute(C, AttributeSet::ReturnIndex, 71 Attribute::UWTable)); 72 73 std::string Error; 74 EXPECT_TRUE(verifyModule(M, ReturnStatusAction, &Error)); 75 EXPECT_TRUE(StringRef(Error). 76 startswith("Attribute 'uwtable' only applies to functions!")); 77 } 78 79 } 80 } 81
