//
//===----------------------------------------------------------------------===//
-#include "gtest/gtest.h"
-#include "llvm/ADT/OwningPtr.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/Assembly/Parser.h"
-#include "llvm/BasicBlock.h"
-#include "llvm/Constant.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
#include "llvm/ExecutionEngine/JIT.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/AsmParser/Parser.h"
+#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/ExecutionEngine/JITMemoryManager.h"
-#include "llvm/Function.h"
-#include "llvm/GlobalValue.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/ModuleProvider.h"
-#include "llvm/Support/IRBuilder.h"
+#include "llvm/IR/BasicBlock.h"
+#include "llvm/IR/Constant.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Type.h"
+#include "llvm/IR/TypeBuilder.h"
+#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/TypeBuilder.h"
-#include "llvm/Target/TargetSelect.h"
-#include "llvm/Type.h"
-
+#include "llvm/Support/TargetSelect.h"
+#include "gtest/gtest.h"
#include <vector>
using namespace llvm;
+// This variable is intentionally defined differently in the statically-compiled
+// program from the IR input to the JIT to assert that the JIT doesn't use its
+// definition. Note that this variable must be defined even on platforms where
+// JIT tests are disabled as it is referenced from the .def file.
+extern "C" int32_t JITTest_AvailableExternallyGlobal;
+int32_t JITTest_AvailableExternallyGlobal LLVM_ATTRIBUTE_USED = 42;
+
+// This function is intentionally defined differently in the statically-compiled
+// program from the IR input to the JIT to assert that the JIT doesn't use its
+// definition. Note that this function must be defined even on platforms where
+// JIT tests are disabled as it is referenced from the .def file.
+extern "C" int32_t JITTest_AvailableExternallyFunction() LLVM_ATTRIBUTE_USED;
+extern "C" int32_t JITTest_AvailableExternallyFunction() {
+ return 42;
+}
+
namespace {
+// Tests on ARM, PowerPC and SystemZ disabled as we're running the old jit
+#if !defined(__arm__) && !defined(__powerpc__) && !defined(__s390__) \
+ && !defined(__aarch64__)
+
Function *makeReturnGlobal(std::string Name, GlobalVariable *G, Module *M) {
- std::vector<const Type*> params;
- const FunctionType *FTy = FunctionType::get(G->getType()->getElementType(),
+ std::vector<Type*> params;
+ FunctionType *FTy = FunctionType::get(G->getType()->getElementType(),
params, false);
Function *F = Function::Create(FTy, GlobalValue::ExternalLinkage, Name, M);
BasicBlock *Entry = BasicBlock::Create(M->getContext(), "entry", F);
IRBuilder<> builder(Entry);
Value *Load = builder.CreateLoad(G);
- const Type *GTy = G->getType()->getElementType();
+ Type *GTy = G->getType()->getElementType();
Value *Add = builder.CreateAdd(Load, ConstantInt::get(GTy, 1LL));
builder.CreateStore(Add, G);
builder.CreateRet(Add);
}
class RecordingJITMemoryManager : public JITMemoryManager {
- const OwningPtr<JITMemoryManager> Base;
+ const std::unique_ptr<JITMemoryManager> Base;
+
public:
RecordingJITMemoryManager()
: Base(JITMemoryManager::CreateDefaultMemManager()) {
stubsAllocated = 0;
}
+ virtual void *getPointerToNamedFunction(const std::string &Name,
+ bool AbortOnFailure = true) {
+ return Base->getPointerToNamedFunction(Name, AbortOnFailure);
+ }
virtual void setMemoryWritable() { Base->setMemoryWritable(); }
virtual void setMemoryExecutable() { Base->setMemoryExecutable(); }
return Result;
}
int stubsAllocated;
- virtual uint8_t *allocateStub(const GlobalValue* F, unsigned StubSize,
- unsigned Alignment) {
+ uint8_t *allocateStub(const GlobalValue *F, unsigned StubSize,
+ unsigned Alignment) override {
stubsAllocated++;
return Base->allocateStub(F, StubSize, Alignment);
}
EndFunctionBodyCall(F, FunctionStart, FunctionEnd));
Base->endFunctionBody(F, FunctionStart, FunctionEnd);
}
+ virtual uint8_t *allocateDataSection(
+ uintptr_t Size, unsigned Alignment, unsigned SectionID,
+ StringRef SectionName, bool IsReadOnly) {
+ return Base->allocateDataSection(
+ Size, Alignment, SectionID, SectionName, IsReadOnly);
+ }
+ virtual uint8_t *allocateCodeSection(
+ uintptr_t Size, unsigned Alignment, unsigned SectionID,
+ StringRef SectionName) {
+ return Base->allocateCodeSection(
+ Size, Alignment, SectionID, SectionName);
+ }
+ virtual bool finalizeMemory(std::string *ErrMsg) { return false; }
virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment) {
return Base->allocateSpace(Size, Alignment);
}
deallocateFunctionBodyCalls.push_back(DeallocateFunctionBodyCall(Body));
Base->deallocateFunctionBody(Body);
}
- struct DeallocateExceptionTableCall {
- DeallocateExceptionTableCall(const void *ET) : ET(ET) {}
- const void *ET;
- };
- std::vector<DeallocateExceptionTableCall> deallocateExceptionTableCalls;
- virtual void deallocateExceptionTable(void *ET) {
- deallocateExceptionTableCalls.push_back(DeallocateExceptionTableCall(ET));
- Base->deallocateExceptionTable(ET);
- }
- struct StartExceptionTableCall {
- StartExceptionTableCall(uint8_t *Result, const Function *F,
- uintptr_t ActualSize, uintptr_t ActualSizeResult)
- : Result(Result), F(F), F_dump(DumpFunction(F)),
- ActualSize(ActualSize), ActualSizeResult(ActualSizeResult) {}
- uint8_t *Result;
- const Function *F;
- std::string F_dump;
- uintptr_t ActualSize;
- uintptr_t ActualSizeResult;
- };
- std::vector<StartExceptionTableCall> startExceptionTableCalls;
- virtual uint8_t* startExceptionTable(const Function* F,
- uintptr_t &ActualSize) {
- uintptr_t InitialActualSize = ActualSize;
- uint8_t *Result = Base->startExceptionTable(F, ActualSize);
- startExceptionTableCalls.push_back(
- StartExceptionTableCall(Result, F, InitialActualSize, ActualSize));
- return Result;
- }
- struct EndExceptionTableCall {
- EndExceptionTableCall(const Function *F, uint8_t *TableStart,
- uint8_t *TableEnd, uint8_t* FrameRegister)
- : F(F), F_dump(DumpFunction(F)),
- TableStart(TableStart), TableEnd(TableEnd),
- FrameRegister(FrameRegister) {}
- const Function *F;
- std::string F_dump;
- uint8_t *TableStart;
- uint8_t *TableEnd;
- uint8_t *FrameRegister;
- };
- std::vector<EndExceptionTableCall> endExceptionTableCalls;
- virtual void endExceptionTable(const Function *F, uint8_t *TableStart,
- uint8_t *TableEnd, uint8_t* FrameRegister) {
- endExceptionTableCalls.push_back(
- EndExceptionTableCall(F, TableStart, TableEnd, FrameRegister));
- return Base->endExceptionTable(F, TableStart, TableEnd, FrameRegister);
- }
};
+bool LoadAssemblyInto(Module *M, const char *assembly) {
+ SMDiagnostic Error;
+ bool success =
+ nullptr != ParseAssemblyString(assembly, M, Error, M->getContext());
+ std::string errMsg;
+ raw_string_ostream os(errMsg);
+ Error.print("", os);
+ EXPECT_TRUE(success) << os.str();
+ return success;
+}
+
class JITTest : public testing::Test {
protected:
+ virtual RecordingJITMemoryManager *createMemoryManager() {
+ return new RecordingJITMemoryManager;
+ }
+
virtual void SetUp() {
M = new Module("<main>", Context);
- MP = new ExistingModuleProvider(M);
- RJMM = new RecordingJITMemoryManager;
+ RJMM = createMemoryManager();
+ RJMM->setPoisonMemory(true);
std::string Error;
- TheJIT.reset(EngineBuilder(MP).setEngineKind(EngineKind::JIT)
+ TargetOptions Options;
+ TheJIT.reset(EngineBuilder(M).setEngineKind(EngineKind::JIT)
.setJITMemoryManager(RJMM)
- .setErrorStr(&Error).create());
- ASSERT_TRUE(TheJIT.get() != NULL) << Error;
+ .setErrorStr(&Error)
+ .setTargetOptions(Options).create());
+ ASSERT_TRUE(TheJIT.get() != nullptr) << Error;
}
void LoadAssembly(const char *assembly) {
- SMDiagnostic Error;
- bool success = NULL != ParseAssemblyString(assembly, M, Error, Context);
- std::string errMsg;
- raw_string_ostream os(errMsg);
- Error.Print("", os);
- ASSERT_TRUE(success) << os.str();
+ LoadAssemblyInto(M, assembly);
}
LLVMContext Context;
- Module *M; // Owned by MP.
- ModuleProvider *MP; // Owned by ExecutionEngine.
+ Module *M; // Owned by ExecutionEngine.
RecordingJITMemoryManager *RJMM;
- OwningPtr<ExecutionEngine> TheJIT;
+ std::unique_ptr<ExecutionEngine> TheJIT;
};
// Regression test for a bug. The JIT used to allocate globals inside the same
TEST(JIT, GlobalInFunction) {
LLVMContext context;
Module *M = new Module("<main>", context);
- ExistingModuleProvider *MP = new ExistingModuleProvider(M);
JITMemoryManager *MemMgr = JITMemoryManager::CreateDefaultMemManager();
// Tell the memory manager to poison freed memory so that accessing freed
// memory is more easily tested.
MemMgr->setPoisonMemory(true);
std::string Error;
- OwningPtr<ExecutionEngine> JIT(EngineBuilder(MP)
- .setEngineKind(EngineKind::JIT)
- .setErrorStr(&Error)
- .setJITMemoryManager(MemMgr)
- // The next line enables the fix:
- .setAllocateGVsWithCode(false)
- .create());
+ std::unique_ptr<ExecutionEngine> JIT(EngineBuilder(M)
+ .setEngineKind(EngineKind::JIT)
+ .setErrorStr(&Error)
+ .setJITMemoryManager(MemMgr)
+ // The next line enables the fix:
+ .setAllocateGVsWithCode(false)
+ .create());
ASSERT_EQ(Error, "");
// Create a global variable.
- const Type *GTy = Type::getInt32Ty(context);
+ Type *GTy = Type::getInt32Ty(context);
GlobalVariable *G = new GlobalVariable(
*M,
GTy,
// Since F1 was codegen'd, a pointer to G should be available.
int32_t *GPtr = (int32_t*)JIT->getPointerToGlobalIfAvailable(G);
- ASSERT_NE((int32_t*)NULL, GPtr);
+ ASSERT_NE((int32_t*)nullptr, GPtr);
EXPECT_EQ(0, *GPtr);
// F1() should increment G.
EXPECT_EQ(8, TestFunctionPtr());
}
-#if !defined(__arm__) && !defined(__powerpc__) && !defined(__ppc__)
// Test a function C which calls A and B which call each other.
TEST_F(JITTest, NonLazyCompilationStillNeedsStubs) {
TheJIT->DisableLazyCompilation(true);
- const FunctionType *Func1Ty =
+ FunctionType *Func1Ty =
cast<FunctionType>(TypeBuilder<void(void), false>::get(Context));
- std::vector<const Type*> arg_types;
+ std::vector<Type*> arg_types;
arg_types.push_back(Type::getInt1Ty(Context));
- const FunctionType *FuncTy = FunctionType::get(
+ FunctionType *FuncTy = FunctionType::get(
Type::getVoidTy(Context), arg_types, false);
Function *Func1 = Function::Create(Func1Ty, Function::ExternalLinkage,
"func1", M);
TheJIT->DisableLazyCompilation(true);
// Create two functions with a single basic block each.
- const FunctionType *FuncTy =
+ FunctionType *FuncTy =
cast<FunctionType>(TypeBuilder<int(), false>::get(Context));
Function *Func1 = Function::Create(FuncTy, Function::ExternalLinkage,
"func1", M);
EXPECT_EQ(Func2->getNumUses(), 0u);
Func2->eraseFromParent();
}
-#endif
TEST_F(JITTest, ModuleDeletion) {
TheJIT->DisableLazyCompilation(false);
"} ");
Function *func = M->getFunction("main");
TheJIT->getPointerToFunction(func);
- TheJIT->deleteModuleProvider(MP);
+ TheJIT->removeModule(M);
+ delete M;
SmallPtrSet<const void*, 2> FunctionsDeallocated;
for (unsigned i = 0, e = RJMM->deallocateFunctionBodyCalls.size();
}
EXPECT_EQ(RJMM->startFunctionBodyCalls.size(),
RJMM->deallocateFunctionBodyCalls.size());
-
- SmallPtrSet<const void*, 2> ExceptionTablesDeallocated;
- unsigned NumTablesDeallocated = 0;
- for (unsigned i = 0, e = RJMM->deallocateExceptionTableCalls.size();
- i != e; ++i) {
- ExceptionTablesDeallocated.insert(
- RJMM->deallocateExceptionTableCalls[i].ET);
- if (RJMM->deallocateExceptionTableCalls[i].ET != NULL) {
- // If JITEmitDebugInfo is off, we'll "deallocate" NULL, which doesn't
- // appear in startExceptionTableCalls.
- NumTablesDeallocated++;
- }
- }
- for (unsigned i = 0, e = RJMM->startExceptionTableCalls.size(); i != e; ++i) {
- EXPECT_TRUE(ExceptionTablesDeallocated.count(
- RJMM->startExceptionTableCalls[i].Result))
- << "Function's exception table leaked: \n"
- << RJMM->startExceptionTableCalls[i].F_dump;
- }
- EXPECT_EQ(RJMM->startExceptionTableCalls.size(),
- NumTablesDeallocated);
}
-#if !defined(__arm__) && !defined(__powerpc__) && !defined(__ppc__)
+// ARM, MIPS and PPC still emit stubs for calls since the target may be
+// too far away to call directly. This #if can probably be removed when
+// http://llvm.org/PR5201 is fixed.
+#if !defined(__arm__) && !defined(__mips__) && \
+ !defined(__powerpc__) && !defined(__ppc__) && !defined(__aarch64__)
typedef int (*FooPtr) ();
TEST_F(JITTest, NoStubs) {
ASSERT_EQ(stubsBefore, RJMM->stubsAllocated);
}
+#endif // !ARM && !PPC
+
+TEST_F(JITTest, FunctionPointersOutliveTheirCreator) {
+ TheJIT->DisableLazyCompilation(true);
+ LoadAssembly("define i8()* @get_foo_addr() { "
+ " ret i8()* @foo "
+ "} "
+ " "
+ "define i8 @foo() { "
+ " ret i8 42 "
+ "} ");
+ Function *F_get_foo_addr = M->getFunction("get_foo_addr");
+
+ typedef char(*fooT)();
+ fooT (*get_foo_addr)() = reinterpret_cast<fooT(*)()>(
+ (intptr_t)TheJIT->getPointerToFunction(F_get_foo_addr));
+ fooT foo_addr = get_foo_addr();
+
+ // Now free get_foo_addr. This should not free the machine code for foo or
+ // any call stub returned as foo's canonical address.
+ TheJIT->freeMachineCodeForFunction(F_get_foo_addr);
+
+ // Check by calling the reported address of foo.
+ EXPECT_EQ(42, foo_addr());
+
+ // The reported address should also be the same as the result of a subsequent
+ // getPointerToFunction(foo).
+#if 0
+ // Fails until PR5126 is fixed:
+ Function *F_foo = M->getFunction("foo");
+ fooT foo = reinterpret_cast<fooT>(
+ (intptr_t)TheJIT->getPointerToFunction(F_foo));
+ EXPECT_EQ((intptr_t)foo, (intptr_t)foo_addr);
#endif
+}
-// This code is copied from JITEventListenerTest, but it only runs once for all
-// the tests in this directory. Everything seems fine, but that's strange
-// behavior.
-class JITEnvironment : public testing::Environment {
- virtual void SetUp() {
- // Required to create a JIT.
- InitializeNativeTarget();
+// ARM does not have an implementation of replaceMachineCodeForFunction(),
+// so recompileAndRelinkFunction doesn't work.
+#if !defined(__arm__) && !defined(__aarch64__)
+TEST_F(JITTest, FunctionIsRecompiledAndRelinked) {
+ Function *F = Function::Create(TypeBuilder<int(void), false>::get(Context),
+ GlobalValue::ExternalLinkage, "test", M);
+ BasicBlock *Entry = BasicBlock::Create(Context, "entry", F);
+ IRBuilder<> Builder(Entry);
+ Value *Val = ConstantInt::get(TypeBuilder<int, false>::get(Context), 1);
+ Builder.CreateRet(Val);
+
+ TheJIT->DisableLazyCompilation(true);
+ // Compile the function once, and make sure it works.
+ int (*OrigFPtr)() = reinterpret_cast<int(*)()>(
+ (intptr_t)TheJIT->recompileAndRelinkFunction(F));
+ EXPECT_EQ(1, OrigFPtr());
+
+ // Now change the function to return a different value.
+ Entry->eraseFromParent();
+ BasicBlock *NewEntry = BasicBlock::Create(Context, "new_entry", F);
+ Builder.SetInsertPoint(NewEntry);
+ Val = ConstantInt::get(TypeBuilder<int, false>::get(Context), 2);
+ Builder.CreateRet(Val);
+ // Recompile it, which should produce a new function pointer _and_ update the
+ // old one.
+ int (*NewFPtr)() = reinterpret_cast<int(*)()>(
+ (intptr_t)TheJIT->recompileAndRelinkFunction(F));
+
+ EXPECT_EQ(2, NewFPtr())
+ << "The new pointer should call the new version of the function";
+ EXPECT_EQ(2, OrigFPtr())
+ << "The old pointer's target should now jump to the new version";
+}
+#endif // !defined(__arm__)
+
+TEST_F(JITTest, AvailableExternallyGlobalIsntEmitted) {
+ TheJIT->DisableLazyCompilation(true);
+ LoadAssembly("@JITTest_AvailableExternallyGlobal = "
+ " available_externally global i32 7 "
+ " "
+ "define i32 @loader() { "
+ " %result = load i32* @JITTest_AvailableExternallyGlobal "
+ " ret i32 %result "
+ "} ");
+ Function *loaderIR = M->getFunction("loader");
+
+ int32_t (*loader)() = reinterpret_cast<int32_t(*)()>(
+ (intptr_t)TheJIT->getPointerToFunction(loaderIR));
+ EXPECT_EQ(42, loader()) << "func should return 42 from the external global,"
+ << " not 7 from the IR version.";
+}
+
+TEST_F(JITTest, AvailableExternallyFunctionIsntCompiled) {
+ TheJIT->DisableLazyCompilation(true);
+ LoadAssembly("define available_externally i32 "
+ " @JITTest_AvailableExternallyFunction() { "
+ " ret i32 7 "
+ "} "
+ " "
+ "define i32 @func() { "
+ " %result = tail call i32 "
+ " @JITTest_AvailableExternallyFunction() "
+ " ret i32 %result "
+ "} ");
+ Function *funcIR = M->getFunction("func");
+
+ int32_t (*func)() = reinterpret_cast<int32_t(*)()>(
+ (intptr_t)TheJIT->getPointerToFunction(funcIR));
+ EXPECT_EQ(42, func()) << "func should return 42 from the static version,"
+ << " not 7 from the IR version.";
+}
+
+TEST_F(JITTest, EscapedLazyStubStillCallable) {
+ TheJIT->DisableLazyCompilation(false);
+ LoadAssembly("define internal i32 @stubbed() { "
+ " ret i32 42 "
+ "} "
+ " "
+ "define i32()* @get_stub() { "
+ " ret i32()* @stubbed "
+ "} ");
+ typedef int32_t(*StubTy)();
+
+ // Call get_stub() to get the address of @stubbed without actually JITting it.
+ Function *get_stubIR = M->getFunction("get_stub");
+ StubTy (*get_stub)() = reinterpret_cast<StubTy(*)()>(
+ (intptr_t)TheJIT->getPointerToFunction(get_stubIR));
+ StubTy stubbed = get_stub();
+ // Now get_stubIR is the only reference to stubbed's stub.
+ get_stubIR->eraseFromParent();
+ // Now there are no references inside the JIT, but we've got a pointer outside
+ // it. The stub should be callable and return the right value.
+ EXPECT_EQ(42, stubbed());
+}
+
+// Converts the LLVM assembly to bitcode and returns it in a std::string. An
+// empty string indicates an error.
+std::string AssembleToBitcode(LLVMContext &Context, const char *Assembly) {
+ Module TempModule("TempModule", Context);
+ if (!LoadAssemblyInto(&TempModule, Assembly)) {
+ return "";
}
-};
-testing::Environment* const jit_env =
- testing::AddGlobalTestEnvironment(new JITEnvironment);
+
+ std::string Result;
+ raw_string_ostream OS(Result);
+ WriteBitcodeToFile(&TempModule, OS);
+ OS.flush();
+ return Result;
+}
+
+// Returns a newly-created ExecutionEngine that reads the bitcode in 'Bitcode'
+// lazily. The associated Module (owned by the ExecutionEngine) is returned in
+// M. Both will be NULL on an error. Bitcode must live at least as long as the
+// ExecutionEngine.
+ExecutionEngine *getJITFromBitcode(
+ LLVMContext &Context, const std::string &Bitcode, Module *&M) {
+ // c_str() is null-terminated like MemoryBuffer::getMemBuffer requires.
+ MemoryBuffer *BitcodeBuffer =
+ MemoryBuffer::getMemBuffer(Bitcode, "Bitcode for test");
+ ErrorOr<Module*> ModuleOrErr = getLazyBitcodeModule(BitcodeBuffer, Context);
+ if (std::error_code EC = ModuleOrErr.getError()) {
+ ADD_FAILURE() << EC.message();
+ delete BitcodeBuffer;
+ return nullptr;
+ }
+ M = ModuleOrErr.get();
+ std::string errMsg;
+ ExecutionEngine *TheJIT = EngineBuilder(M)
+ .setEngineKind(EngineKind::JIT)
+ .setErrorStr(&errMsg)
+ .create();
+ if (TheJIT == nullptr) {
+ ADD_FAILURE() << errMsg;
+ delete M;
+ M = nullptr;
+ return nullptr;
+ }
+ return TheJIT;
+}
+
+TEST(LazyLoadedJITTest, MaterializableAvailableExternallyFunctionIsntCompiled) {
+ LLVMContext Context;
+ const std::string Bitcode =
+ AssembleToBitcode(Context,
+ "define available_externally i32 "
+ " @JITTest_AvailableExternallyFunction() { "
+ " ret i32 7 "
+ "} "
+ " "
+ "define i32 @func() { "
+ " %result = tail call i32 "
+ " @JITTest_AvailableExternallyFunction() "
+ " ret i32 %result "
+ "} ");
+ ASSERT_FALSE(Bitcode.empty()) << "Assembling failed";
+ Module *M;
+ std::unique_ptr<ExecutionEngine> TheJIT(
+ getJITFromBitcode(Context, Bitcode, M));
+ ASSERT_TRUE(TheJIT.get()) << "Failed to create JIT.";
+ TheJIT->DisableLazyCompilation(true);
+
+ Function *funcIR = M->getFunction("func");
+ Function *availableFunctionIR =
+ M->getFunction("JITTest_AvailableExternallyFunction");
+
+ // Double-check that the available_externally function is still unmaterialized
+ // when getPointerToFunction needs to find out if it's available_externally.
+ EXPECT_TRUE(availableFunctionIR->isMaterializable());
+
+ int32_t (*func)() = reinterpret_cast<int32_t(*)()>(
+ (intptr_t)TheJIT->getPointerToFunction(funcIR));
+ EXPECT_EQ(42, func()) << "func should return 42 from the static version,"
+ << " not 7 from the IR version.";
+}
+
+TEST(LazyLoadedJITTest, EagerCompiledRecursionThroughGhost) {
+ LLVMContext Context;
+ const std::string Bitcode =
+ AssembleToBitcode(Context,
+ "define i32 @recur1(i32 %a) { "
+ " %zero = icmp eq i32 %a, 0 "
+ " br i1 %zero, label %done, label %notdone "
+ "done: "
+ " ret i32 3 "
+ "notdone: "
+ " %am1 = sub i32 %a, 1 "
+ " %result = call i32 @recur2(i32 %am1) "
+ " ret i32 %result "
+ "} "
+ " "
+ "define i32 @recur2(i32 %b) { "
+ " %result = call i32 @recur1(i32 %b) "
+ " ret i32 %result "
+ "} ");
+ ASSERT_FALSE(Bitcode.empty()) << "Assembling failed";
+ Module *M;
+ std::unique_ptr<ExecutionEngine> TheJIT(
+ getJITFromBitcode(Context, Bitcode, M));
+ ASSERT_TRUE(TheJIT.get()) << "Failed to create JIT.";
+ TheJIT->DisableLazyCompilation(true);
+
+ Function *recur1IR = M->getFunction("recur1");
+ Function *recur2IR = M->getFunction("recur2");
+ EXPECT_TRUE(recur1IR->isMaterializable());
+ EXPECT_TRUE(recur2IR->isMaterializable());
+
+ int32_t (*recur1)(int32_t) = reinterpret_cast<int32_t(*)(int32_t)>(
+ (intptr_t)TheJIT->getPointerToFunction(recur1IR));
+ EXPECT_EQ(3, recur1(4));
+}
+#endif // !defined(__arm__) && !defined(__powerpc__) && !defined(__s390__)
}