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 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 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
