1//===- llvm/unittest/VMCore/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/Constants.h"
11#include "llvm/DerivedTypes.h"
12#include "llvm/Function.h"
13#include "llvm/GlobalAlias.h"
14#include "llvm/GlobalVariable.h"
15#include "llvm/Instructions.h"
16#include "llvm/LLVMContext.h"
17#include "llvm/Module.h"
18#include "llvm/ADT/OwningPtr.h"
19#include "llvm/Analysis/Verifier.h"
20#include "gtest/gtest.h"
21
22namespace llvm {
23namespace {
24
25TEST(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
47TEST(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}
65