forked from OSchip/llvm-project
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
//===- llvm/unittest/Bitcode/BitReaderTest.cpp - Tests for BitReader ------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Analysis/Verifier.h"
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#include "llvm/Bitcode/BitstreamWriter.h"
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#include "llvm/Bitcode/ReaderWriter.h"
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#include "llvm/Constants.h"
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#include "llvm/Instructions.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/Module.h"
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#include "llvm/PassManager.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "gtest/gtest.h"
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namespace llvm {
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namespace {
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static Module *makeLLVMModule() {
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Module* Mod = new Module("test-mem", getGlobalContext());
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FunctionType* FuncTy =
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FunctionType::get(Type::getVoidTy(Mod->getContext()), false);
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Function* Func = Function::Create(FuncTy,GlobalValue::ExternalLinkage,
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"func", Mod);
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BasicBlock* Entry = BasicBlock::Create(Mod->getContext(), "entry", Func);
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new UnreachableInst(Mod->getContext(), Entry);
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BasicBlock* BB = BasicBlock::Create(Mod->getContext(), "bb", Func);
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new UnreachableInst(Mod->getContext(), BB);
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PointerType* Int8Ptr = Type::getInt8PtrTy(Mod->getContext());
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new GlobalVariable(*Mod, Int8Ptr, /*isConstant=*/true,
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GlobalValue::ExternalLinkage,
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BlockAddress::get(BB), "table");
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return Mod;
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}
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static void writeModuleToBuffer(SmallVectorImpl<char> &Buffer) {
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Module *Mod = makeLLVMModule();
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raw_svector_ostream OS(Buffer);
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WriteBitcodeToFile(Mod, OS);
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}
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TEST(BitReaderTest, MaterializeFunctionsForBlockAddr) { // PR11677
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SmallString<1024> Mem;
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writeModuleToBuffer(Mem);
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MemoryBuffer *Buffer = MemoryBuffer::getMemBuffer(Mem.str(), "test", false);
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std::string errMsg;
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Module *m = getLazyBitcodeModule(Buffer, getGlobalContext(), &errMsg);
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PassManager passes;
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passes.add(createVerifierPass());
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passes.run(*m);
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}
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}
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}
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