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-rw-r--r--llvm/unittests/ExecutionEngine/Orc/CMakeLists.txt1
-rw-r--r--llvm/unittests/ExecutionEngine/Orc/RTDyldObjectLinkingLayer2Test.cpp282
2 files changed, 283 insertions, 0 deletions
diff --git a/llvm/unittests/ExecutionEngine/Orc/CMakeLists.txt b/llvm/unittests/ExecutionEngine/Orc/CMakeLists.txt
index bb77a4c5c8b..f0fd5896426 100644
--- a/llvm/unittests/ExecutionEngine/Orc/CMakeLists.txt
+++ b/llvm/unittests/ExecutionEngine/Orc/CMakeLists.txt
@@ -23,6 +23,7 @@ add_llvm_unittest(OrcJITTests
RemoteObjectLayerTest.cpp
RPCUtilsTest.cpp
RTDyldObjectLinkingLayerTest.cpp
+ RTDyldObjectLinkingLayer2Test.cpp
SymbolStringPoolTest.cpp
)
diff --git a/llvm/unittests/ExecutionEngine/Orc/RTDyldObjectLinkingLayer2Test.cpp b/llvm/unittests/ExecutionEngine/Orc/RTDyldObjectLinkingLayer2Test.cpp
new file mode 100644
index 00000000000..0fa9bc759fa
--- /dev/null
+++ b/llvm/unittests/ExecutionEngine/Orc/RTDyldObjectLinkingLayer2Test.cpp
@@ -0,0 +1,282 @@
+//===--- RTDyldObjectLinkingLayer2Test.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/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 RTDyldObjectLinkingLayer2ExecutionTest : public testing::Test,
+ public OrcExecutionTest {};
+
+class SectionMemoryManagerWrapper : public SectionMemoryManager {
+public:
+ int FinalizationCount = 0;
+ int NeedsToReserveAllocationSpaceCount = 0;
+
+ bool needsToReserveAllocationSpace() override {
+ ++NeedsToReserveAllocationSpaceCount;
+ return SectionMemoryManager::needsToReserveAllocationSpace();
+ }
+
+ bool finalizeMemory(std::string *ErrMsg = nullptr) override {
+ ++FinalizationCount;
+ return SectionMemoryManager::finalizeMemory(ErrMsg);
+ }
+};
+
+// 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;
+ auto MM = std::make_shared<MemoryManagerWrapper>(DebugSectionSeen);
+
+ ExecutionSession ES(std::make_shared<SymbolStringPool>());
+ auto &JD = ES.createJITDylib("main");
+ auto Foo = ES.getSymbolStringPool().intern("foo");
+
+ RTDyldObjectLinkingLayer2 ObjLayer(ES, [&MM](VModuleKey) { return MM; });
+
+ auto OnResolveDoNothing = [](Expected<SymbolMap> R) {
+ cantFail(std::move(R));
+ };
+
+ auto OnReadyDoNothing = [](Error Err) { cantFail(std::move(Err)); };
+
+ ObjLayer.setProcessAllSections(ProcessAllSections);
+ auto K = ES.allocateVModule();
+ cantFail(ObjLayer.add(JD, K, std::move(Obj)));
+ ES.lookup({&JD}, {Foo}, OnResolveDoNothing, OnReadyDoNothing,
+ NoDependenciesToRegister);
+ return DebugSectionSeen;
+}
+
+TEST(RTDyldObjectLinkingLayer2Test, 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(RTDyldObjectLinkingLayer2Test, NoDuplicateFinalization) {
+ // Create a pair of modules that will trigger recursive finalization:
+ // Module 1:
+ // int bar() { return 42; }
+ // Module 2:
+ // int bar();
+ // int foo() { return bar(); }
+ //
+ // Verify that the memory manager is only finalized once (for Module 2).
+ // Failure suggests that finalize is being called on the inner RTDyld
+ // instance (for Module 1) which is unsafe, as it will prevent relocation of
+ // Module 2.
+
+ // 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("x86_64-unknown-linux-gnu"), "", "",
+ SmallVector<std::string, 1>()));
+
+ if (!TM)
+ return;
+
+ LLVMContext Context;
+ ExecutionSession ES(std::make_shared<SymbolStringPool>());
+ auto &JD = ES.createJITDylib("main");
+
+ auto Foo = ES.getSymbolStringPool().intern("foo");
+
+ auto MM = std::make_shared<SectionMemoryManagerWrapper>();
+
+ RTDyldObjectLinkingLayer2 ObjLayer(ES, [&](VModuleKey K) { return MM; });
+
+ SimpleCompiler Compile(*TM);
+
+ ModuleBuilder MB1(Context, TM->getTargetTriple().str(), "dummy");
+ {
+ MB1.getModule()->setDataLayout(TM->createDataLayout());
+ Function *BarImpl = MB1.createFunctionDecl<int32_t(void)>("bar");
+ BasicBlock *BarEntry = BasicBlock::Create(Context, "entry", BarImpl);
+ IRBuilder<> Builder(BarEntry);
+ IntegerType *Int32Ty = IntegerType::get(Context, 32);
+ Value *FourtyTwo = ConstantInt::getSigned(Int32Ty, 42);
+ Builder.CreateRet(FourtyTwo);
+ }
+
+ auto Obj1 = Compile(*MB1.getModule());
+
+ ModuleBuilder MB2(Context, TM->getTargetTriple().str(), "dummy");
+ {
+ MB2.getModule()->setDataLayout(TM->createDataLayout());
+ Function *BarDecl = MB2.createFunctionDecl<int32_t(void)>("bar");
+ Function *FooImpl = MB2.createFunctionDecl<int32_t(void)>("foo");
+ BasicBlock *FooEntry = BasicBlock::Create(Context, "entry", FooImpl);
+ IRBuilder<> Builder(FooEntry);
+ Builder.CreateRet(Builder.CreateCall(BarDecl));
+ }
+ auto Obj2 = Compile(*MB2.getModule());
+
+ auto K1 = ES.allocateVModule();
+ cantFail(ObjLayer.add(JD, K1, std::move(Obj1)));
+
+ auto K2 = ES.allocateVModule();
+ cantFail(ObjLayer.add(JD, K2, std::move(Obj2)));
+
+ auto OnResolve = [](Expected<SymbolMap> Symbols) {
+ cantFail(std::move(Symbols));
+ };
+ auto OnReady = [](Error Err) { cantFail(std::move(Err)); };
+
+ ES.lookup({&JD}, {Foo}, OnResolve, OnReady, NoDependenciesToRegister);
+
+ // Finalization of module 2 should trigger finalization of module 1.
+ // Verify that finalize on SMMW is only called once.
+ EXPECT_EQ(MM->FinalizationCount, 1) << "Extra call to finalize";
+}
+
+TEST(RTDyldObjectLinkingLayer2Test, NoPrematureAllocation) {
+ // Create a pair of unrelated modules:
+ //
+ // Module 1:
+ // int foo() { return 42; }
+ // Module 2:
+ // int bar() { return 7; }
+ //
+ // Both modules will share a memory manager. We want to verify that the
+ // second object is not loaded before the first one is finalized. To do this
+ // in a portable way, we abuse the
+ // RuntimeDyld::MemoryManager::needsToReserveAllocationSpace hook, which is
+ // called once per object before any sections are allocated.
+
+ // 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("x86_64-unknown-linux-gnu"), "", "",
+ SmallVector<std::string, 1>()));
+
+ if (!TM)
+ return;
+
+ ExecutionSession ES(std::make_shared<SymbolStringPool>());
+ auto &JD = ES.createJITDylib("main");
+
+ auto Foo = ES.getSymbolStringPool().intern("foo");
+
+ auto MM = std::make_shared<SectionMemoryManagerWrapper>();
+
+ RTDyldObjectLinkingLayer2 ObjLayer(ES, [&MM](VModuleKey K) { return MM; });
+ SimpleCompiler Compile(*TM);
+
+ LLVMContext Context;
+ ModuleBuilder MB1(Context, TM->getTargetTriple().str(), "dummy");
+ {
+ MB1.getModule()->setDataLayout(TM->createDataLayout());
+ Function *BarImpl = MB1.createFunctionDecl<int32_t(void)>("foo");
+ BasicBlock *BarEntry = BasicBlock::Create(Context, "entry", BarImpl);
+ IRBuilder<> Builder(BarEntry);
+ IntegerType *Int32Ty = IntegerType::get(Context, 32);
+ Value *FourtyTwo = ConstantInt::getSigned(Int32Ty, 42);
+ Builder.CreateRet(FourtyTwo);
+ }
+
+ auto Obj1 = Compile(*MB1.getModule());
+
+ ModuleBuilder MB2(Context, TM->getTargetTriple().str(), "dummy");
+ {
+ MB2.getModule()->setDataLayout(TM->createDataLayout());
+ Function *BarImpl = MB2.createFunctionDecl<int32_t(void)>("bar");
+ BasicBlock *BarEntry = BasicBlock::Create(Context, "entry", BarImpl);
+ IRBuilder<> Builder(BarEntry);
+ IntegerType *Int32Ty = IntegerType::get(Context, 32);
+ Value *Seven = ConstantInt::getSigned(Int32Ty, 7);
+ Builder.CreateRet(Seven);
+ }
+ auto Obj2 = Compile(*MB2.getModule());
+
+ cantFail(ObjLayer.add(JD, ES.allocateVModule(), std::move(Obj1)));
+ cantFail(ObjLayer.add(JD, ES.allocateVModule(), std::move(Obj2)));
+
+ auto OnResolve = [](Expected<SymbolMap> Result) {
+ cantFail(std::move(Result));
+ };
+
+ auto OnReady = [](Error Err) { cantFail(std::move(Err)); };
+
+ ES.lookup({&JD}, {Foo}, OnResolve, OnReady, NoDependenciesToRegister);
+
+ // Only one call to needsToReserveAllocationSpace should have been made.
+ EXPECT_EQ(MM->NeedsToReserveAllocationSpaceCount, 1)
+ << "More than one call to needsToReserveAllocationSpace "
+ "(multiple unrelated objects loaded prior to finalization)";
+}
+
+TEST(RTDyldObjectLinkingLayer2Test, TestNotifyLoadedSignature) {
+ ExecutionSession ES(std::make_shared<SymbolStringPool>());
+ RTDyldObjectLinkingLayer2 ObjLayer(
+ ES,
+ [](VModuleKey) -> std::shared_ptr<RuntimeDyld::MemoryManager> {
+ return nullptr;
+ },
+ [](VModuleKey, const object::ObjectFile &obj,
+ const RuntimeDyld::LoadedObjectInfo &info) {});
+}
+
+} // end anonymous namespace
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