1 //===- llvm/unittest/Bitcode/BitReaderTest.cpp - Tests for BitReader ------===// 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/ADT/SmallString.h" 11 #include "llvm/Analysis/Verifier.h" 12 #include "llvm/Bitcode/BitstreamWriter.h" 13 #include "llvm/Bitcode/ReaderWriter.h" 14 #include "llvm/IR/Constants.h" 15 #include "llvm/IR/Instructions.h" 16 #include "llvm/IR/LLVMContext.h" 17 #include "llvm/IR/Module.h" 18 #include "llvm/PassManager.h" 19 #include "llvm/Support/MemoryBuffer.h" 20 #include "gtest/gtest.h" 21 22 namespace llvm { 23 namespace { 24 25 static Module *makeLLVMModule() { 26 Module* Mod = new Module("test-mem", getGlobalContext()); 27 28 FunctionType* FuncTy = 29 FunctionType::get(Type::getVoidTy(Mod->getContext()), false); 30 Function* Func = Function::Create(FuncTy,GlobalValue::ExternalLinkage, 31 "func", Mod); 32 33 BasicBlock* Entry = BasicBlock::Create(Mod->getContext(), "entry", Func); 34 new UnreachableInst(Mod->getContext(), Entry); 35 36 BasicBlock* BB = BasicBlock::Create(Mod->getContext(), "bb", Func); 37 new UnreachableInst(Mod->getContext(), BB); 38 39 PointerType* Int8Ptr = Type::getInt8PtrTy(Mod->getContext()); 40 new GlobalVariable(*Mod, Int8Ptr, /*isConstant=*/true, 41 GlobalValue::ExternalLinkage, 42 BlockAddress::get(BB), "table"); 43 44 return Mod; 45 } 46 47 static void writeModuleToBuffer(SmallVectorImpl<char> &Buffer) { 48 OwningPtr<Module> Mod(makeLLVMModule()); 49 raw_svector_ostream OS(Buffer); 50 WriteBitcodeToFile(Mod.get(), OS); 51 } 52 53 TEST(BitReaderTest, MaterializeFunctionsForBlockAddr) { // PR11677 54 SmallString<1024> Mem; 55 writeModuleToBuffer(Mem); 56 MemoryBuffer *Buffer = MemoryBuffer::getMemBuffer(Mem.str(), "test", false); 57 std::string errMsg; 58 OwningPtr<Module> m(getLazyBitcodeModule(Buffer, getGlobalContext(), &errMsg)); 59 PassManager passes; 60 passes.add(createVerifierPass()); 61 passes.run(*m); 62 } 63 64 } 65 } 66
