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//===--- RTDyldObjectLinkingLayerTest.cpp - RTDyld linking layer tests ---===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "OrcTestCommon.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
#include "llvm/ExecutionEngine/Orc/LambdaResolver.h"
#include "llvm/ExecutionEngine/Orc/Legacy.h"
#include "llvm/ExecutionEngine/Orc/NullResolver.h"
#include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/LLVMContext.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::orc;
namespace {
class RTDyldObjectLinkingLayerExecutionTest : public testing::Test,
public OrcExecutionTest {};
// Adds an object with a debug section to RuntimeDyld and then returns whether
// the debug section was passed to the memory manager.
static bool testSetProcessAllSections(std::unique_ptr<MemoryBuffer> Obj,
bool ProcessAllSections) {
class MemoryManagerWrapper : public SectionMemoryManager {
public:
MemoryManagerWrapper(bool &DebugSeen) : DebugSeen(DebugSeen) {}
uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID, StringRef SectionName,
bool IsReadOnly) override {
if (SectionName == ".debug_str")
DebugSeen = true;
return SectionMemoryManager::allocateDataSection(
Size, Alignment, SectionID, SectionName, IsReadOnly);
}
private:
bool &DebugSeen;
};
bool DebugSectionSeen = false;
ExecutionSession ES;
auto &JD = ES.createJITDylib("main");
auto Foo = ES.intern("foo");
RTDyldObjectLinkingLayer ObjLayer(ES, [&DebugSectionSeen]() {
return llvm::make_unique<MemoryManagerWrapper>(DebugSectionSeen);
});
auto OnResolveDoNothing = [](Expected<SymbolMap> R) {
cantFail(std::move(R));
};
auto OnReadyDoNothing = [](Error Err) { cantFail(std::move(Err)); };
ObjLayer.setProcessAllSections(ProcessAllSections);
cantFail(ObjLayer.add(JD, std::move(Obj), ES.allocateVModule()));
ES.lookup(JITDylibSearchList({{&JD, false}}), {Foo}, OnResolveDoNothing,
OnReadyDoNothing, NoDependenciesToRegister);
return DebugSectionSeen;
}
TEST(RTDyldObjectLinkingLayerTest, TestSetProcessAllSections) {
LLVMContext Context;
auto M = llvm::make_unique<Module>("", Context);
M->setTargetTriple("x86_64-unknown-linux-gnu");
Type *Int32Ty = IntegerType::get(Context, 32);
GlobalVariable *GV =
new GlobalVariable(*M, Int32Ty, false, GlobalValue::ExternalLinkage,
ConstantInt::get(Int32Ty, 42), "foo");
GV->setSection(".debug_str");
// Initialize the native target in case this is the first unit test
// to try to build a TM.
OrcNativeTarget::initialize();
std::unique_ptr<TargetMachine> TM(EngineBuilder().selectTarget(
Triple(M->getTargetTriple()), "", "", SmallVector<std::string, 1>()));
if (!TM)
return;
auto Obj = SimpleCompiler(*TM)(*M);
EXPECT_FALSE(testSetProcessAllSections(
MemoryBuffer::getMemBufferCopy(Obj->getBuffer()), false))
<< "Debug section seen despite ProcessAllSections being false";
EXPECT_TRUE(testSetProcessAllSections(std::move(Obj), true))
<< "Expected to see debug section when ProcessAllSections is true";
}
TEST(RTDyldObjectLinkingLayerTest, TestOverrideObjectFlags) {
OrcNativeTarget::initialize();
std::unique_ptr<TargetMachine> TM(
EngineBuilder().selectTarget(Triple("x86_64-unknown-linux-gnu"), "", "",
SmallVector<std::string, 1>()));
if (!TM)
return;
// Our compiler is going to modify symbol visibility settings without telling
// ORC. This will test our ability to override the flags later.
class FunkySimpleCompiler : public SimpleCompiler {
public:
FunkySimpleCompiler(TargetMachine &TM) : SimpleCompiler(TM) {}
CompileResult operator()(Module &M) {
auto *Foo = M.getFunction("foo");
assert(Foo && "Expected function Foo not found");
Foo->setVisibility(GlobalValue::HiddenVisibility);
return SimpleCompiler::operator()(M);
}
};
// Create a module with two void() functions: foo and bar.
ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>());
ThreadSafeModule M;
{
ModuleBuilder MB(*TSCtx.getContext(), TM->getTargetTriple().str(), "dummy");
MB.getModule()->setDataLayout(TM->createDataLayout());
Function *FooImpl = MB.createFunctionDecl(
FunctionType::get(Type::getVoidTy(*TSCtx.getContext()), {}, false),
"foo");
BasicBlock *FooEntry =
BasicBlock::Create(*TSCtx.getContext(), "entry", FooImpl);
IRBuilder<> B1(FooEntry);
B1.CreateRetVoid();
Function *BarImpl = MB.createFunctionDecl(
FunctionType::get(Type::getVoidTy(*TSCtx.getContext()), {}, false),
"bar");
BasicBlock *BarEntry =
BasicBlock::Create(*TSCtx.getContext(), "entry", BarImpl);
IRBuilder<> B2(BarEntry);
B2.CreateRetVoid();
M = ThreadSafeModule(MB.takeModule(), std::move(TSCtx));
}
// Create a simple stack and set the override flags option.
ExecutionSession ES;
auto &JD = ES.createJITDylib("main");
auto Foo = ES.intern("foo");
RTDyldObjectLinkingLayer ObjLayer(
ES, []() { return llvm::make_unique<SectionMemoryManager>(); });
IRCompileLayer CompileLayer(ES, ObjLayer, FunkySimpleCompiler(*TM));
ObjLayer.setOverrideObjectFlagsWithResponsibilityFlags(true);
cantFail(CompileLayer.add(JD, std::move(M), ES.allocateVModule()));
ES.lookup(JITDylibSearchList({{&JD, false}}), {Foo},
[](Expected<SymbolMap> R) { cantFail(std::move(R)); },
[](Error Err) { cantFail(std::move(Err)); },
NoDependenciesToRegister);
}
TEST(RTDyldObjectLinkingLayerTest, TestAutoClaimResponsibilityForSymbols) {
OrcNativeTarget::initialize();
std::unique_ptr<TargetMachine> TM(
EngineBuilder().selectTarget(Triple("x86_64-unknown-linux-gnu"), "", "",
SmallVector<std::string, 1>()));
if (!TM)
return;
// Our compiler is going to add a new symbol without telling ORC.
// This will test our ability to auto-claim responsibility later.
class FunkySimpleCompiler : public SimpleCompiler {
public:
FunkySimpleCompiler(TargetMachine &TM) : SimpleCompiler(TM) {}
CompileResult operator()(Module &M) {
Function *BarImpl = Function::Create(
FunctionType::get(Type::getVoidTy(M.getContext()), {}, false),
GlobalValue::ExternalLinkage, "bar", &M);
BasicBlock *BarEntry =
BasicBlock::Create(M.getContext(), "entry", BarImpl);
IRBuilder<> B(BarEntry);
B.CreateRetVoid();
return SimpleCompiler::operator()(M);
}
};
// Create a module with two void() functions: foo and bar.
ThreadSafeContext TSCtx(llvm::make_unique<LLVMContext>());
ThreadSafeModule M;
{
ModuleBuilder MB(*TSCtx.getContext(), TM->getTargetTriple().str(), "dummy");
MB.getModule()->setDataLayout(TM->createDataLayout());
Function *FooImpl = MB.createFunctionDecl(
FunctionType::get(Type::getVoidTy(*TSCtx.getContext()), {}, false),
"foo");
BasicBlock *FooEntry =
BasicBlock::Create(*TSCtx.getContext(), "entry", FooImpl);
IRBuilder<> B(FooEntry);
B.CreateRetVoid();
M = ThreadSafeModule(MB.takeModule(), std::move(TSCtx));
}
// Create a simple stack and set the override flags option.
ExecutionSession ES;
auto &JD = ES.createJITDylib("main");
auto Foo = ES.intern("foo");
RTDyldObjectLinkingLayer ObjLayer(
ES, []() { return llvm::make_unique<SectionMemoryManager>(); });
IRCompileLayer CompileLayer(ES, ObjLayer, FunkySimpleCompiler(*TM));
ObjLayer.setAutoClaimResponsibilityForObjectSymbols(true);
cantFail(CompileLayer.add(JD, std::move(M), ES.allocateVModule()));
ES.lookup(JITDylibSearchList({{&JD, false}}), {Foo},
[](Expected<SymbolMap> R) { cantFail(std::move(R)); },
[](Error Err) { cantFail(std::move(Err)); },
NoDependenciesToRegister);
}
} // end anonymous namespace
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