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diff --git a/contrib/llvm/unittests/ExecutionEngine/JIT/JITTest.cpp b/contrib/llvm/unittests/ExecutionEngine/JIT/JITTest.cpp
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--- a/contrib/llvm/unittests/ExecutionEngine/JIT/JITTest.cpp
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@@ -1,806 +0,0 @@
-//===- JITTest.cpp - Unit tests for the JIT -------------------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#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/Bitcode/ReaderWriter.h"
-#include "llvm/Constant.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/ExecutionEngine/JIT.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/Support/IRBuilder.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 <vector>
-
-using namespace llvm;
-
-namespace {
-
-Function *makeReturnGlobal(std::string Name, GlobalVariable *G, Module *M) {
- std::vector<const Type*> params;
- const 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();
- Value *Add = builder.CreateAdd(Load, ConstantInt::get(GTy, 1LL));
- builder.CreateStore(Add, G);
- builder.CreateRet(Add);
- return F;
-}
-
-std::string DumpFunction(const Function *F) {
- std::string Result;
- raw_string_ostream(Result) << "" << *F;
- return Result;
-}
-
-class RecordingJITMemoryManager : public JITMemoryManager {
- const OwningPtr<JITMemoryManager> Base;
-public:
- RecordingJITMemoryManager()
- : Base(JITMemoryManager::CreateDefaultMemManager()) {
- stubsAllocated = 0;
- }
-
- void setSizeRequired(bool Required) { SizeRequired = Required; }
-
- virtual void setMemoryWritable() { Base->setMemoryWritable(); }
- virtual void setMemoryExecutable() { Base->setMemoryExecutable(); }
- virtual void setPoisonMemory(bool poison) { Base->setPoisonMemory(poison); }
- virtual void AllocateGOT() { Base->AllocateGOT(); }
- virtual uint8_t *getGOTBase() const { return Base->getGOTBase(); }
- struct StartFunctionBodyCall {
- StartFunctionBodyCall(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<StartFunctionBodyCall> startFunctionBodyCalls;
- virtual uint8_t *startFunctionBody(const Function *F,
- uintptr_t &ActualSize) {
- uintptr_t InitialActualSize = ActualSize;
- uint8_t *Result = Base->startFunctionBody(F, ActualSize);
- startFunctionBodyCalls.push_back(
- StartFunctionBodyCall(Result, F, InitialActualSize, ActualSize));
- return Result;
- }
- int stubsAllocated;
- virtual uint8_t *allocateStub(const GlobalValue* F, unsigned StubSize,
- unsigned Alignment) {
- stubsAllocated++;
- return Base->allocateStub(F, StubSize, Alignment);
- }
- struct EndFunctionBodyCall {
- EndFunctionBodyCall(const Function *F, uint8_t *FunctionStart,
- uint8_t *FunctionEnd)
- : F(F), F_dump(DumpFunction(F)),
- FunctionStart(FunctionStart), FunctionEnd(FunctionEnd) {}
- const Function *F;
- std::string F_dump;
- uint8_t *FunctionStart;
- uint8_t *FunctionEnd;
- };
- std::vector<EndFunctionBodyCall> endFunctionBodyCalls;
- virtual void endFunctionBody(const Function *F, uint8_t *FunctionStart,
- uint8_t *FunctionEnd) {
- endFunctionBodyCalls.push_back(
- EndFunctionBodyCall(F, FunctionStart, FunctionEnd));
- Base->endFunctionBody(F, FunctionStart, FunctionEnd);
- }
- virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment) {
- return Base->allocateSpace(Size, Alignment);
- }
- virtual uint8_t *allocateGlobal(uintptr_t Size, unsigned Alignment) {
- return Base->allocateGlobal(Size, Alignment);
- }
- struct DeallocateFunctionBodyCall {
- DeallocateFunctionBodyCall(const void *Body) : Body(Body) {}
- const void *Body;
- };
- std::vector<DeallocateFunctionBodyCall> deallocateFunctionBodyCalls;
- virtual void deallocateFunctionBody(void *Body) {
- 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 =
- NULL != 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 void SetUp() {
- M = new Module("<main>", Context);
- RJMM = new RecordingJITMemoryManager;
- RJMM->setPoisonMemory(true);
- std::string Error;
- TheJIT.reset(EngineBuilder(M).setEngineKind(EngineKind::JIT)
- .setJITMemoryManager(RJMM)
- .setErrorStr(&Error).create());
- ASSERT_TRUE(TheJIT.get() != NULL) << Error;
- }
-
- void LoadAssembly(const char *assembly) {
- LoadAssemblyInto(M, assembly);
- }
-
- LLVMContext Context;
- Module *M; // Owned by ExecutionEngine.
- RecordingJITMemoryManager *RJMM;
- OwningPtr<ExecutionEngine> TheJIT;
-};
-
-// Regression test for a bug. The JIT used to allocate globals inside the same
-// memory block used for the function, and when the function code was freed,
-// the global was left in the same place. This test allocates a function
-// that uses and global, deallocates it, and then makes sure that the global
-// stays alive after that.
-TEST(JIT, GlobalInFunction) {
- LLVMContext context;
- Module *M = new Module("<main>", context);
-
- 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(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);
- GlobalVariable *G = new GlobalVariable(
- *M,
- GTy,
- false, // Not constant.
- GlobalValue::InternalLinkage,
- Constant::getNullValue(GTy),
- "myglobal");
-
- // Make a function that points to a global.
- Function *F1 = makeReturnGlobal("F1", G, M);
-
- // Get the pointer to the native code to force it to JIT the function and
- // allocate space for the global.
- void (*F1Ptr)() =
- reinterpret_cast<void(*)()>((intptr_t)JIT->getPointerToFunction(F1));
-
- // 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);
- EXPECT_EQ(0, *GPtr);
-
- // F1() should increment G.
- F1Ptr();
- EXPECT_EQ(1, *GPtr);
-
- // Make a second function identical to the first, referring to the same
- // global.
- Function *F2 = makeReturnGlobal("F2", G, M);
- void (*F2Ptr)() =
- reinterpret_cast<void(*)()>((intptr_t)JIT->getPointerToFunction(F2));
-
- // F2() should increment G.
- F2Ptr();
- EXPECT_EQ(2, *GPtr);
-
- // Deallocate F1.
- JIT->freeMachineCodeForFunction(F1);
-
- // F2() should *still* increment G.
- F2Ptr();
- EXPECT_EQ(3, *GPtr);
-}
-
-int PlusOne(int arg) {
- return arg + 1;
-}
-
-TEST_F(JITTest, FarCallToKnownFunction) {
- // x86-64 can only make direct calls to functions within 32 bits of
- // the current PC. To call anything farther away, we have to load
- // the address into a register and call through the register. The
- // current JIT does this by allocating a stub for any far call.
- // There was a bug in which the JIT tried to emit a direct call when
- // the target was already in the JIT's global mappings and lazy
- // compilation was disabled.
-
- Function *KnownFunction = Function::Create(
- TypeBuilder<int(int), false>::get(Context),
- GlobalValue::ExternalLinkage, "known", M);
- TheJIT->addGlobalMapping(KnownFunction, (void*)(intptr_t)PlusOne);
-
- // int test() { return known(7); }
- Function *TestFunction = Function::Create(
- TypeBuilder<int(), false>::get(Context),
- GlobalValue::ExternalLinkage, "test", M);
- BasicBlock *Entry = BasicBlock::Create(Context, "entry", TestFunction);
- IRBuilder<> Builder(Entry);
- Value *result = Builder.CreateCall(
- KnownFunction,
- ConstantInt::get(TypeBuilder<int, false>::get(Context), 7));
- Builder.CreateRet(result);
-
- TheJIT->DisableLazyCompilation(true);
- int (*TestFunctionPtr)() = reinterpret_cast<int(*)()>(
- (intptr_t)TheJIT->getPointerToFunction(TestFunction));
- // This used to crash in trying to call PlusOne().
- EXPECT_EQ(8, TestFunctionPtr());
-}
-
-// Test a function C which calls A and B which call each other.
-TEST_F(JITTest, NonLazyCompilationStillNeedsStubs) {
- TheJIT->DisableLazyCompilation(true);
-
- const FunctionType *Func1Ty =
- cast<FunctionType>(TypeBuilder<void(void), false>::get(Context));
- std::vector<const Type*> arg_types;
- arg_types.push_back(Type::getInt1Ty(Context));
- const FunctionType *FuncTy = FunctionType::get(
- Type::getVoidTy(Context), arg_types, false);
- Function *Func1 = Function::Create(Func1Ty, Function::ExternalLinkage,
- "func1", M);
- Function *Func2 = Function::Create(FuncTy, Function::InternalLinkage,
- "func2", M);
- Function *Func3 = Function::Create(FuncTy, Function::InternalLinkage,
- "func3", M);
- BasicBlock *Block1 = BasicBlock::Create(Context, "block1", Func1);
- BasicBlock *Block2 = BasicBlock::Create(Context, "block2", Func2);
- BasicBlock *True2 = BasicBlock::Create(Context, "cond_true", Func2);
- BasicBlock *False2 = BasicBlock::Create(Context, "cond_false", Func2);
- BasicBlock *Block3 = BasicBlock::Create(Context, "block3", Func3);
- BasicBlock *True3 = BasicBlock::Create(Context, "cond_true", Func3);
- BasicBlock *False3 = BasicBlock::Create(Context, "cond_false", Func3);
-
- // Make Func1 call Func2(0) and Func3(0).
- IRBuilder<> Builder(Block1);
- Builder.CreateCall(Func2, ConstantInt::getTrue(Context));
- Builder.CreateCall(Func3, ConstantInt::getTrue(Context));
- Builder.CreateRetVoid();
-
- // void Func2(bool b) { if (b) { Func3(false); return; } return; }
- Builder.SetInsertPoint(Block2);
- Builder.CreateCondBr(Func2->arg_begin(), True2, False2);
- Builder.SetInsertPoint(True2);
- Builder.CreateCall(Func3, ConstantInt::getFalse(Context));
- Builder.CreateRetVoid();
- Builder.SetInsertPoint(False2);
- Builder.CreateRetVoid();
-
- // void Func3(bool b) { if (b) { Func2(false); return; } return; }
- Builder.SetInsertPoint(Block3);
- Builder.CreateCondBr(Func3->arg_begin(), True3, False3);
- Builder.SetInsertPoint(True3);
- Builder.CreateCall(Func2, ConstantInt::getFalse(Context));
- Builder.CreateRetVoid();
- Builder.SetInsertPoint(False3);
- Builder.CreateRetVoid();
-
- // Compile the function to native code
- void (*F1Ptr)() =
- reinterpret_cast<void(*)()>((intptr_t)TheJIT->getPointerToFunction(Func1));
-
- F1Ptr();
-}
-
-// Regression test for PR5162. This used to trigger an AssertingVH inside the
-// JIT's Function to stub mapping.
-TEST_F(JITTest, NonLazyLeaksNoStubs) {
- TheJIT->DisableLazyCompilation(true);
-
- // Create two functions with a single basic block each.
- const FunctionType *FuncTy =
- cast<FunctionType>(TypeBuilder<int(), false>::get(Context));
- Function *Func1 = Function::Create(FuncTy, Function::ExternalLinkage,
- "func1", M);
- Function *Func2 = Function::Create(FuncTy, Function::InternalLinkage,
- "func2", M);
- BasicBlock *Block1 = BasicBlock::Create(Context, "block1", Func1);
- BasicBlock *Block2 = BasicBlock::Create(Context, "block2", Func2);
-
- // The first function calls the second and returns the result
- IRBuilder<> Builder(Block1);
- Value *Result = Builder.CreateCall(Func2);
- Builder.CreateRet(Result);
-
- // The second function just returns a constant
- Builder.SetInsertPoint(Block2);
- Builder.CreateRet(ConstantInt::get(TypeBuilder<int, false>::get(Context),42));
-
- // Compile the function to native code
- (void)TheJIT->getPointerToFunction(Func1);
-
- // Free the JIT state for the functions
- TheJIT->freeMachineCodeForFunction(Func1);
- TheJIT->freeMachineCodeForFunction(Func2);
-
- // Delete the first function (and show that is has no users)
- EXPECT_EQ(Func1->getNumUses(), 0u);
- Func1->eraseFromParent();
-
- // Delete the second function (and show that it has no users - it had one,
- // func1 but that's gone now)
- EXPECT_EQ(Func2->getNumUses(), 0u);
- Func2->eraseFromParent();
-}
-
-TEST_F(JITTest, ModuleDeletion) {
- TheJIT->DisableLazyCompilation(false);
- LoadAssembly("define void @main() { "
- " call i32 @computeVal() "
- " ret void "
- "} "
- " "
- "define internal i32 @computeVal() { "
- " ret i32 0 "
- "} ");
- Function *func = M->getFunction("main");
- TheJIT->getPointerToFunction(func);
- TheJIT->removeModule(M);
- delete M;
-
- SmallPtrSet<const void*, 2> FunctionsDeallocated;
- for (unsigned i = 0, e = RJMM->deallocateFunctionBodyCalls.size();
- i != e; ++i) {
- FunctionsDeallocated.insert(RJMM->deallocateFunctionBodyCalls[i].Body);
- }
- for (unsigned i = 0, e = RJMM->startFunctionBodyCalls.size(); i != e; ++i) {
- EXPECT_TRUE(FunctionsDeallocated.count(
- RJMM->startFunctionBodyCalls[i].Result))
- << "Function leaked: \n" << RJMM->startFunctionBodyCalls[i].F_dump;
- }
- 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);
-}
-
-// ARM 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(__powerpc__) && !defined(__ppc__)
-typedef int (*FooPtr) ();
-
-TEST_F(JITTest, NoStubs) {
- LoadAssembly("define void @bar() {"
- "entry: "
- "ret void"
- "}"
- " "
- "define i32 @foo() {"
- "entry:"
- "call void @bar()"
- "ret i32 undef"
- "}"
- " "
- "define i32 @main() {"
- "entry:"
- "%0 = call i32 @foo()"
- "call void @bar()"
- "ret i32 undef"
- "}");
- Function *foo = M->getFunction("foo");
- uintptr_t tmp = (uintptr_t)(TheJIT->getPointerToFunction(foo));
- FooPtr ptr = (FooPtr)(tmp);
-
- (ptr)();
-
- // We should now allocate no more stubs, we have the code to foo
- // and the existing stub for bar.
- int stubsBefore = RJMM->stubsAllocated;
- Function *func = M->getFunction("main");
- TheJIT->getPointerToFunction(func);
-
- Function *bar = M->getFunction("bar");
- TheJIT->getPointerToFunction(bar);
-
- 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
-}
-
-// ARM doesn't have an implementation of replaceMachineCodeForFunction(), so
-// recompileAndRelinkFunction doesn't work.
-#if !defined(__arm__)
-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__)
-
-} // anonymous namespace
-// 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.
-extern "C" int32_t JITTest_AvailableExternallyGlobal;
-int32_t JITTest_AvailableExternallyGlobal = 42;
-namespace {
-
-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.";
-}
-
-} // anonymous namespace
-// 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.
-extern "C" int32_t JITTest_AvailableExternallyFunction() {
- return 42;
-}
-namespace {
-
-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, NeedsExactSizeWithManyGlobals) {
- // PR5291: When the JMM needed the exact size of function bodies before
- // starting to emit them, the JITEmitter would modify a set while iterating
- // over it.
- TheJIT->DisableLazyCompilation(true);
- RJMM->setSizeRequired(true);
-
- LoadAssembly("@A = global i32 42 "
- "@B = global i32* @A "
- "@C = global i32** @B "
- "@D = global i32*** @C "
- "@E = global i32**** @D "
- "@F = global i32***** @E "
- "@G = global i32****** @F "
- "@H = global i32******* @G "
- "@I = global i32******** @H "
- "define i32********* @test() { "
- " ret i32********* @I "
- "}");
- Function *testIR = M->getFunction("test");
- int32_t********* (*test)() = reinterpret_cast<int32_t*********(*)()>(
- (intptr_t)TheJIT->getPointerToFunction(testIR));
- EXPECT_EQ(42, *********test());
-}
-
-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 "";
- }
-
- 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");
- std::string errMsg;
- M = getLazyBitcodeModule(BitcodeBuffer, Context, &errMsg);
- if (M == NULL) {
- ADD_FAILURE() << errMsg;
- delete BitcodeBuffer;
- return NULL;
- }
- ExecutionEngine *TheJIT = EngineBuilder(M)
- .setEngineKind(EngineKind::JIT)
- .setErrorStr(&errMsg)
- .create();
- if (TheJIT == NULL) {
- ADD_FAILURE() << errMsg;
- delete M;
- M = NULL;
- return NULL;
- }
- 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;
- OwningPtr<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;
- OwningPtr<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));
-}
-
-// 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();
- }
-};
-testing::Environment* const jit_env =
- testing::AddGlobalTestEnvironment(new JITEnvironment);
-
-}
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