mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-20 12:05:48 -04:00
8890460431
The BlockAddress doesn't have access to the correct basic blocks until the functions have been cloned. This causes the BlockAddress to point to the old values. Just wait until the functions have been cloned before copying the initializers. PR13163 llvm-svn: 194218
132 lines
4.2 KiB
C++
132 lines
4.2 KiB
C++
//===- llvm/unittest/Linker/LinkModulesTest.cpp - IRBuilder tests ---------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Linker.h"
|
|
#include "llvm/IR/IRBuilder.h"
|
|
#include "llvm/IR/BasicBlock.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
class LinkModuleTest : public testing::Test {
|
|
protected:
|
|
virtual void SetUp() {
|
|
LLVMContext &Ctx = getGlobalContext();
|
|
M.reset(new Module("MyModule", Ctx));
|
|
FunctionType *FTy = FunctionType::get(Type::getInt8PtrTy(Ctx),
|
|
Type::getInt32Ty(Ctx),
|
|
false /*=isVarArg*/);
|
|
F = Function::Create(FTy, Function::ExternalLinkage, "ba_func", M.get());
|
|
F->setCallingConv(CallingConv::C);
|
|
|
|
EntryBB = BasicBlock::Create(Ctx, "entry", F);
|
|
SwitchCase1BB = BasicBlock::Create(Ctx, "switch.case.1", F);
|
|
SwitchCase2BB = BasicBlock::Create(Ctx, "switch.case.2", F);
|
|
ExitBB = BasicBlock::Create(Ctx, "exit", F);
|
|
|
|
ArrayType *AT = ArrayType::get(Type::getInt8PtrTy(Ctx), 3);
|
|
|
|
GV = new GlobalVariable(*M.get(), AT, false /*=isConstant*/,
|
|
GlobalValue::InternalLinkage,
|
|
0, "switch.bas");
|
|
|
|
|
|
// Global Initializer
|
|
std::vector<Constant*> Init;
|
|
Constant *SwitchCase1BA = BlockAddress::get(SwitchCase1BB);
|
|
Init.push_back(SwitchCase1BA);
|
|
|
|
Constant *SwitchCase2BA = BlockAddress::get(SwitchCase2BB);
|
|
Init.push_back(SwitchCase2BA);
|
|
|
|
ConstantInt *One = ConstantInt::get(Type::getInt32Ty(Ctx), 1);
|
|
Constant *OnePtr = ConstantExpr::getCast(Instruction::IntToPtr,
|
|
One, Type::getInt8PtrTy(Ctx));
|
|
Init.push_back(OnePtr);
|
|
|
|
GV->setInitializer(ConstantArray::get(AT, Init));
|
|
}
|
|
|
|
virtual void TearDown() {
|
|
M.reset();
|
|
}
|
|
|
|
OwningPtr<Module> M;
|
|
Function *F;
|
|
GlobalVariable *GV;
|
|
BasicBlock *EntryBB;
|
|
BasicBlock *SwitchCase1BB;
|
|
BasicBlock *SwitchCase2BB;
|
|
BasicBlock *ExitBB;
|
|
};
|
|
|
|
TEST_F(LinkModuleTest, BlockAddress) {
|
|
LLVMContext &Ctx = getGlobalContext();
|
|
IRBuilder<> Builder(EntryBB);
|
|
|
|
std::vector<Value*> GEPIndices;
|
|
GEPIndices.push_back(ConstantInt::get(Type::getInt32Ty(Ctx), 0));
|
|
GEPIndices.push_back(F->arg_begin());
|
|
|
|
Value *GEP = Builder.CreateGEP(GV, GEPIndices, "switch.gep");
|
|
Value *Load = Builder.CreateLoad(GEP, "switch.load");
|
|
|
|
Builder.CreateRet(Load);
|
|
|
|
Builder.SetInsertPoint(SwitchCase1BB);
|
|
Builder.CreateBr(ExitBB);
|
|
|
|
Builder.SetInsertPoint(SwitchCase2BB);
|
|
Builder.CreateBr(ExitBB);
|
|
|
|
Builder.SetInsertPoint(ExitBB);
|
|
Builder.CreateRet(ConstantPointerNull::get(Type::getInt8PtrTy(Ctx)));
|
|
|
|
Module *LinkedModule = new Module("MyModuleLinked", getGlobalContext());
|
|
Linker::LinkModules(LinkedModule, M.get(), Linker::PreserveSource, 0);
|
|
|
|
// Delete the original module.
|
|
M.reset();
|
|
|
|
// Check that the global "@switch.bas" is well-formed.
|
|
const GlobalVariable *LinkedGV = LinkedModule->getNamedGlobal("switch.bas");
|
|
const Constant *Init = LinkedGV->getInitializer();
|
|
|
|
// @switch.bas = internal global [3 x i8*]
|
|
// [i8* blockaddress(@ba_func, %switch.case.1),
|
|
// i8* blockaddress(@ba_func, %switch.case.2),
|
|
// i8* inttoptr (i32 1 to i8*)]
|
|
|
|
ArrayType *AT = ArrayType::get(Type::getInt8PtrTy(Ctx), 3);
|
|
EXPECT_EQ(AT, Init->getType());
|
|
|
|
Value *Elem = Init->getOperand(0);
|
|
ASSERT_TRUE(isa<BlockAddress>(Elem));
|
|
EXPECT_EQ(cast<BlockAddress>(Elem)->getFunction(),
|
|
LinkedModule->getFunction("ba_func"));
|
|
EXPECT_EQ(cast<BlockAddress>(Elem)->getBasicBlock()->getParent(),
|
|
LinkedModule->getFunction("ba_func"));
|
|
|
|
Elem = Init->getOperand(1);
|
|
ASSERT_TRUE(isa<BlockAddress>(Elem));
|
|
EXPECT_EQ(cast<BlockAddress>(Elem)->getFunction(),
|
|
LinkedModule->getFunction("ba_func"));
|
|
EXPECT_EQ(cast<BlockAddress>(Elem)->getBasicBlock()->getParent(),
|
|
LinkedModule->getFunction("ba_func"));
|
|
|
|
delete LinkedModule;
|
|
}
|
|
|
|
} // end anonymous namespace
|