| //===- llvm/unittest/IR/VerifierTest.cpp - Verifier unit tests ------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/IR/Verifier.h" |
| #include "llvm/IR/Constants.h" |
| #include "llvm/IR/DerivedTypes.h" |
| #include "llvm/IR/Function.h" |
| #include "llvm/IR/GlobalAlias.h" |
| #include "llvm/IR/GlobalVariable.h" |
| #include "llvm/IR/Instructions.h" |
| #include "llvm/IR/LLVMContext.h" |
| #include "llvm/IR/Module.h" |
| #include "gtest/gtest.h" |
| |
| namespace llvm { |
| namespace { |
| |
| TEST(VerifierTest, Branch_i1) { |
| LLVMContext &C = getGlobalContext(); |
| Module M("M", C); |
| FunctionType *FTy = FunctionType::get(Type::getVoidTy(C), /*isVarArg=*/false); |
| Function *F = cast<Function>(M.getOrInsertFunction("foo", FTy)); |
| BasicBlock *Entry = BasicBlock::Create(C, "entry", F); |
| BasicBlock *Exit = BasicBlock::Create(C, "exit", F); |
| ReturnInst::Create(C, Exit); |
| |
| // To avoid triggering an assertion in BranchInst::Create, we first create |
| // a branch with an 'i1' condition ... |
| |
| Constant *False = ConstantInt::getFalse(C); |
| BranchInst *BI = BranchInst::Create(Exit, Exit, False, Entry); |
| |
| // ... then use setOperand to redirect it to a value of different type. |
| |
| Constant *Zero32 = ConstantInt::get(IntegerType::get(C, 32), 0); |
| BI->setOperand(0, Zero32); |
| |
| EXPECT_TRUE(verifyFunction(*F)); |
| } |
| |
| TEST(VerifierTest, InvalidRetAttribute) { |
| LLVMContext &C = getGlobalContext(); |
| Module M("M", C); |
| FunctionType *FTy = FunctionType::get(Type::getInt32Ty(C), /*isVarArg=*/false); |
| Function *F = cast<Function>(M.getOrInsertFunction("foo", FTy)); |
| AttributeSet AS = F->getAttributes(); |
| F->setAttributes(AS.addAttribute(C, AttributeSet::ReturnIndex, |
| Attribute::UWTable)); |
| |
| std::string Error; |
| raw_string_ostream ErrorOS(Error); |
| EXPECT_TRUE(verifyModule(M, &ErrorOS)); |
| EXPECT_TRUE(StringRef(ErrorOS.str()).startswith( |
| "Attribute 'uwtable' only applies to functions!")); |
| } |
| |
| TEST(VerifierTest, CrossModuleRef) { |
| LLVMContext &C = getGlobalContext(); |
| Module M1("M1", C); |
| Module M2("M2", C); |
| Module M3("M2", C); |
| FunctionType *FTy = FunctionType::get(Type::getInt32Ty(C), /*isVarArg=*/false); |
| Function *F1 = cast<Function>(M1.getOrInsertFunction("foo1", FTy)); |
| Function *F2 = cast<Function>(M2.getOrInsertFunction("foo2", FTy)); |
| Function *F3 = cast<Function>(M3.getOrInsertFunction("foo3", FTy)); |
| |
| BasicBlock *Entry1 = BasicBlock::Create(C, "entry", F1); |
| BasicBlock *Entry3 = BasicBlock::Create(C, "entry", F3); |
| |
| // BAD: Referencing function in another module |
| CallInst::Create(F2,"call",Entry1); |
| |
| // BAD: Referencing personality routine in another module |
| F3->setPersonalityFn(F2); |
| |
| // Fill in the body |
| Constant *ConstZero = ConstantInt::get(Type::getInt32Ty(C), 0); |
| ReturnInst::Create(C, ConstZero, Entry1); |
| ReturnInst::Create(C, ConstZero, Entry3); |
| |
| std::string Error; |
| raw_string_ostream ErrorOS(Error); |
| EXPECT_FALSE(verifyModule(M2, &ErrorOS)); |
| EXPECT_TRUE(verifyModule(M1, &ErrorOS)); |
| EXPECT_TRUE(StringRef(ErrorOS.str()).equals( |
| "Referencing function in another module!\n" |
| " %call = call i32 @foo2()\n" |
| "; ModuleID = 'M1'\n" |
| "i32 ()* @foo2\n" |
| "; ModuleID = 'M2'\n")); |
| |
| Error.clear(); |
| EXPECT_TRUE(verifyModule(M3, &ErrorOS)); |
| EXPECT_TRUE(StringRef(ErrorOS.str()).startswith( |
| "Referencing personality function in another module!")); |
| |
| // Erase bad methods to avoid triggering an assertion failure on destruction |
| F1->eraseFromParent(); |
| F3->eraseFromParent(); |
| } |
| |
| |
| |
| } |
| } |