compiler/driver/compiler_driver_test.cc - platform/art - Git at Google

 /*
  * Copyright (C) 2011 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include "driver/compiler_driver.h"

 #include <stdint.h>
 #include <stdio.h>
 #include <memory>

 #include "art_method-inl.h"
 #include "class_linker-inl.h"
 #include "common_compiler_test.h"
 #include "dex_file.h"
 #include "gc/heap.h"
 #include "mirror/class-inl.h"
 #include "mirror/class_loader.h"
 #include "mirror/dex_cache-inl.h"
 #include "mirror/object_array-inl.h"
 #include "mirror/object-inl.h"
 #include "handle_scope-inl.h"
 #include "jit/offline_profiling_info.h"
 #include "scoped_thread_state_change.h"

 namespace art {

 class CompilerDriverTest : public CommonCompilerTest {
  protected:
   void CompileAll(jobject class_loader) REQUIRES(!Locks::mutator_lock_) {
     TimingLogger timings("CompilerDriverTest::CompileAll", false, false);
     TimingLogger::ScopedTiming t(__FUNCTION__, &timings);
     compiler_driver_->CompileAll(class_loader,
                                  GetDexFiles(class_loader),
                                  &timings);
     t.NewTiming("MakeAllExecutable");
     MakeAllExecutable(class_loader);
   }

   void EnsureCompiled(jobject class_loader, const char* class_name, const char* method,
                       const char* signature, bool is_virtual)
       REQUIRES(!Locks::mutator_lock_) {
     CompileAll(class_loader);
     Thread::Current()->TransitionFromSuspendedToRunnable();
     bool started = runtime_->Start();
     CHECK(started);
     env_ = Thread::Current()->GetJniEnv();
     class_ = env_->FindClass(class_name);
     CHECK(class_ != nullptr) << "Class not found: " << class_name;
     if (is_virtual) {
       mid_ = env_->GetMethodID(class_, method, signature);
     } else {
       mid_ = env_->GetStaticMethodID(class_, method, signature);
     }
     CHECK(mid_ != nullptr) << "Method not found: " << class_name << "." << method << signature;
   }

   void MakeAllExecutable(jobject class_loader) {
     const std::vector<const DexFile*> class_path = GetDexFiles(class_loader);
     for (size_t i = 0; i != class_path.size(); ++i) {
       const DexFile* dex_file = class_path[i];
       CHECK(dex_file != nullptr);
       MakeDexFileExecutable(class_loader, *dex_file);
     }
   }

   void MakeDexFileExecutable(jobject class_loader, const DexFile& dex_file) {
     ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
     for (size_t i = 0; i < dex_file.NumClassDefs(); i++) {
       const DexFile::ClassDef& class_def = dex_file.GetClassDef(i);
       const char* descriptor = dex_file.GetClassDescriptor(class_def);
       ScopedObjectAccess soa(Thread::Current());
       StackHandleScope<1> hs(soa.Self());
       Handle<mirror::ClassLoader> loader(
           hs.NewHandle(soa.Decode<mirror::ClassLoader*>(class_loader)));
       mirror::Class* c = class_linker->FindClass(soa.Self(), descriptor, loader);
       CHECK(c != nullptr);
       const auto pointer_size = class_linker->GetImagePointerSize();
       for (auto& m : c->GetMethods(pointer_size)) {
         MakeExecutable(&m);
       }
     }
   }

   JNIEnv* env_;
   jclass class_;
   jmethodID mid_;
 };

 // Disabled due to 10 second runtime on host
 TEST_F(CompilerDriverTest, DISABLED_LARGE_CompileDexLibCore) {
   CompileAll(nullptr);

   // All libcore references should resolve
   ScopedObjectAccess soa(Thread::Current());
   ASSERT_TRUE(java_lang_dex_file_ != nullptr);
   const DexFile& dex = *java_lang_dex_file_;
   mirror::DexCache* dex_cache = class_linker_->FindDexCache(soa.Self(), dex);
   EXPECT_EQ(dex.NumStringIds(), dex_cache->NumStrings());
   for (size_t i = 0; i < dex_cache->NumStrings(); i++) {
     const mirror::String* string = dex_cache->GetResolvedString(i);
     EXPECT_TRUE(string != nullptr) << "string_idx=" << i;
   }
   EXPECT_EQ(dex.NumTypeIds(), dex_cache->NumResolvedTypes());
   for (size_t i = 0; i < dex_cache->NumResolvedTypes(); i++) {
     mirror::Class* type = dex_cache->GetResolvedType(i);
     EXPECT_TRUE(type != nullptr) << "type_idx=" << i
                               << " " << dex.GetTypeDescriptor(dex.GetTypeId(i));
   }
   EXPECT_EQ(dex.NumMethodIds(), dex_cache->NumResolvedMethods());
   auto* cl = Runtime::Current()->GetClassLinker();
   auto pointer_size = cl->GetImagePointerSize();
   for (size_t i = 0; i < dex_cache->NumResolvedMethods(); i++) {
     ArtMethod* method = dex_cache->GetResolvedMethod(i, pointer_size);
     EXPECT_TRUE(method != nullptr) << "method_idx=" << i
                                 << " " << dex.GetMethodDeclaringClassDescriptor(dex.GetMethodId(i))
                                 << " " << dex.GetMethodName(dex.GetMethodId(i));
     EXPECT_TRUE(method->GetEntryPointFromQuickCompiledCode() != nullptr) << "method_idx=" << i
         << " " << dex.GetMethodDeclaringClassDescriptor(dex.GetMethodId(i)) << " "
         << dex.GetMethodName(dex.GetMethodId(i));
   }
   EXPECT_EQ(dex.NumFieldIds(), dex_cache->NumResolvedFields());
   for (size_t i = 0; i < dex_cache->NumResolvedFields(); i++) {
     ArtField* field = cl->GetResolvedField(i, dex_cache);
     EXPECT_TRUE(field != nullptr) << "field_idx=" << i
                                << " " << dex.GetFieldDeclaringClassDescriptor(dex.GetFieldId(i))
                                << " " << dex.GetFieldName(dex.GetFieldId(i));
   }

   // TODO check Class::IsVerified for all classes

   // TODO: check that all Method::GetCode() values are non-null
 }

 TEST_F(CompilerDriverTest, DISABLED_AbstractMethodErrorStub) {
   TEST_DISABLED_FOR_HEAP_REFERENCE_POISONING_WITH_QUICK();
   TEST_DISABLED_FOR_READ_BARRIER_WITH_QUICK();
   TEST_DISABLED_FOR_READ_BARRIER_WITH_OPTIMIZING_FOR_UNSUPPORTED_INSTRUCTION_SETS();
   jobject class_loader;
   {
     ScopedObjectAccess soa(Thread::Current());
     CompileVirtualMethod(ScopedNullHandle<mirror::ClassLoader>(),
                          "java.lang.Class",
                          "isFinalizable",
                          "()Z");
     CompileDirectMethod(ScopedNullHandle<mirror::ClassLoader>(),
                         "java.lang.Object",
                         "<init>",
                         "()V");
     class_loader = LoadDex("AbstractMethod");
   }
   ASSERT_TRUE(class_loader != nullptr);
   EnsureCompiled(class_loader, "AbstractClass", "foo", "()V", true);

   // Create a jobj_ of ConcreteClass, NOT AbstractClass.
   jclass c_class = env_->FindClass("ConcreteClass");

   jmethodID constructor = env_->GetMethodID(c_class, "<init>", "()V");

   jobject jobj_ = env_->NewObject(c_class, constructor);
   ASSERT_TRUE(jobj_ != nullptr);

   // Force non-virtual call to AbstractClass foo, will throw AbstractMethodError exception.
   env_->CallNonvirtualVoidMethod(jobj_, class_, mid_);

   EXPECT_EQ(env_->ExceptionCheck(), JNI_TRUE);
   jthrowable exception = env_->ExceptionOccurred();
   env_->ExceptionClear();
   jclass jlame = env_->FindClass("java/lang/AbstractMethodError");
   EXPECT_TRUE(env_->IsInstanceOf(exception, jlame));
   {
     ScopedObjectAccess soa(Thread::Current());
     Thread::Current()->ClearException();
   }
 }

 class CompilerDriverMethodsTest : public CompilerDriverTest {
  protected:
   std::unordered_set<std::string>* GetCompiledMethods() OVERRIDE {
     return new std::unordered_set<std::string>({
       "byte StaticLeafMethods.identity(byte)",
       "int StaticLeafMethods.sum(int, int, int)",
       "double StaticLeafMethods.sum(double, double, double, double)"
     });
   }
 };

 TEST_F(CompilerDriverMethodsTest, Selection) {
   TEST_DISABLED_FOR_HEAP_REFERENCE_POISONING_WITH_QUICK();
   TEST_DISABLED_FOR_READ_BARRIER_WITH_QUICK();
   TEST_DISABLED_FOR_READ_BARRIER_WITH_OPTIMIZING_FOR_UNSUPPORTED_INSTRUCTION_SETS();
   Thread* self = Thread::Current();
   jobject class_loader;
   {
     ScopedObjectAccess soa(self);
     class_loader = LoadDex("StaticLeafMethods");
   }
   ASSERT_NE(class_loader, nullptr);

   // Need to enable dex-file writability. Methods rejected to be compiled will run through the
   // dex-to-dex compiler.
   for (const DexFile* dex_file : GetDexFiles(class_loader)) {
     ASSERT_TRUE(dex_file->EnableWrite());
   }

   CompileAll(class_loader);

   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   ScopedObjectAccess soa(self);
   StackHandleScope<1> hs(self);
   Handle<mirror::ClassLoader> h_loader(hs.NewHandle(
       reinterpret_cast<mirror::ClassLoader*>(self->DecodeJObject(class_loader))));
   mirror::Class* klass = class_linker->FindClass(self, "LStaticLeafMethods;", h_loader);
   ASSERT_NE(klass, nullptr);

   std::unique_ptr<std::unordered_set<std::string>> expected(GetCompiledMethods());

   const auto pointer_size = class_linker->GetImagePointerSize();
   for (auto& m : klass->GetDirectMethods(pointer_size)) {
     std::string name = PrettyMethod(&m, true);
     const void* code = m.GetEntryPointFromQuickCompiledCodePtrSize(pointer_size);
     ASSERT_NE(code, nullptr);
     if (expected->find(name) != expected->end()) {
       expected->erase(name);
       EXPECT_FALSE(class_linker->IsQuickToInterpreterBridge(code));
     } else {
       EXPECT_TRUE(class_linker->IsQuickToInterpreterBridge(code));
     }
   }
   EXPECT_TRUE(expected->empty());
 }

 class CompilerDriverProfileTest : public CompilerDriverTest {
  protected:
   ProfileCompilationInfo* GetProfileCompilationInfo() OVERRIDE {
     ScopedObjectAccess soa(Thread::Current());
     std::vector<std::unique_ptr<const DexFile>> dex_files = OpenTestDexFiles("ProfileTestMultiDex");

     ProfileCompilationInfo info;
     for (const std::unique_ptr<const DexFile>& dex_file : dex_files) {
       std::string key = ProfileCompilationInfo::GetProfileDexFileKey(dex_file->GetLocation());
       profile_info_.AddMethodIndex(key, dex_file->GetLocationChecksum(), 1);
       profile_info_.AddMethodIndex(key, dex_file->GetLocationChecksum(), 2);
     }
     return &profile_info_;
   }

   std::unordered_set<std::string> GetExpectedMethodsForClass(const std::string& clazz) {
     if (clazz == "Main") {
       return std::unordered_set<std::string>({
           "java.lang.String Main.getA()",
           "java.lang.String Main.getB()"});
     } else if (clazz == "Second") {
       return std::unordered_set<std::string>({
           "java.lang.String Second.getX()",
           "java.lang.String Second.getY()"});
     } else {
       return std::unordered_set<std::string>();
     }
   }

   void CheckCompiledMethods(jobject class_loader,
                             const std::string& clazz,
                             const std::unordered_set<std::string>& expected_methods) {
     ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
     Thread* self = Thread::Current();
     ScopedObjectAccess soa(self);
     StackHandleScope<1> hs(self);
     Handle<mirror::ClassLoader> h_loader(hs.NewHandle(
         reinterpret_cast<mirror::ClassLoader*>(self->DecodeJObject(class_loader))));
     mirror::Class* klass = class_linker->FindClass(self, clazz.c_str(), h_loader);
     ASSERT_NE(klass, nullptr);

     const auto pointer_size = class_linker->GetImagePointerSize();
     size_t number_of_compiled_methods = 0;
     for (auto& m : klass->GetVirtualMethods(pointer_size)) {
       std::string name = PrettyMethod(&m, true);
       const void* code = m.GetEntryPointFromQuickCompiledCodePtrSize(pointer_size);
       ASSERT_NE(code, nullptr);
       if (expected_methods.find(name) != expected_methods.end()) {
         number_of_compiled_methods++;
         EXPECT_FALSE(class_linker->IsQuickToInterpreterBridge(code));
       } else {
         EXPECT_TRUE(class_linker->IsQuickToInterpreterBridge(code));
       }
     }
     EXPECT_EQ(expected_methods.size(), number_of_compiled_methods);
   }

  private:
   ProfileCompilationInfo profile_info_;
 };

 TEST_F(CompilerDriverProfileTest, ProfileGuidedCompilation) {
   TEST_DISABLED_FOR_HEAP_REFERENCE_POISONING_WITH_QUICK();
   TEST_DISABLED_FOR_READ_BARRIER_WITH_QUICK();
   TEST_DISABLED_FOR_READ_BARRIER_WITH_OPTIMIZING_FOR_UNSUPPORTED_INSTRUCTION_SETS();
   Thread* self = Thread::Current();
   jobject class_loader;
   {
     ScopedObjectAccess soa(self);
     class_loader = LoadDex("ProfileTestMultiDex");
   }
   ASSERT_NE(class_loader, nullptr);

   // Need to enable dex-file writability. Methods rejected to be compiled will run through the
   // dex-to-dex compiler.
   ProfileCompilationInfo info;
   for (const DexFile* dex_file : GetDexFiles(class_loader)) {
     ASSERT_TRUE(dex_file->EnableWrite());
   }

   CompileAll(class_loader);

   std::unordered_set<std::string> m = GetExpectedMethodsForClass("Main");
   std::unordered_set<std::string> s = GetExpectedMethodsForClass("Second");
   CheckCompiledMethods(class_loader, "LMain;", m);
   CheckCompiledMethods(class_loader, "LSecond;", s);
 }

 // TODO: need check-cast test (when stub complete & we can throw/catch

 }  // namespace art
	/*
	* Copyright (C) 2011 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include "driver/compiler_driver.h"

	#include <stdint.h>
	#include <stdio.h>
	#include <memory>

	#include "art_method-inl.h"
	#include "class_linker-inl.h"
	#include "common_compiler_test.h"
	#include "dex_file.h"
	#include "gc/heap.h"
	#include "mirror/class-inl.h"
	#include "mirror/class_loader.h"
	#include "mirror/dex_cache-inl.h"
	#include "mirror/object_array-inl.h"
	#include "mirror/object-inl.h"
	#include "handle_scope-inl.h"
	#include "jit/offline_profiling_info.h"
	#include "scoped_thread_state_change.h"

	namespace art {

	class CompilerDriverTest : public CommonCompilerTest {
	protected:
	void CompileAll(jobject class_loader) REQUIRES(!Locks::mutator_lock_) {
	TimingLogger timings("CompilerDriverTest::CompileAll", false, false);
	TimingLogger::ScopedTiming t(__FUNCTION__, &timings);
	compiler_driver_->CompileAll(class_loader,
	GetDexFiles(class_loader),
	&timings);
	t.NewTiming("MakeAllExecutable");
	MakeAllExecutable(class_loader);
	}

	void EnsureCompiled(jobject class_loader, const char* class_name, const char* method,
	const char* signature, bool is_virtual)
	REQUIRES(!Locks::mutator_lock_) {
	CompileAll(class_loader);
	Thread::Current()->TransitionFromSuspendedToRunnable();
	bool started = runtime_->Start();
	CHECK(started);
	env_ = Thread::Current()->GetJniEnv();
	class_ = env_->FindClass(class_name);
	CHECK(class_ != nullptr) << "Class not found: " << class_name;
	if (is_virtual) {
	mid_ = env_->GetMethodID(class_, method, signature);
	} else {
	mid_ = env_->GetStaticMethodID(class_, method, signature);
	}
	CHECK(mid_ != nullptr) << "Method not found: " << class_name << "." << method << signature;
	}

	void MakeAllExecutable(jobject class_loader) {
	const std::vector<const DexFile*> class_path = GetDexFiles(class_loader);
	for (size_t i = 0; i != class_path.size(); ++i) {
	const DexFile* dex_file = class_path[i];
	CHECK(dex_file != nullptr);
	MakeDexFileExecutable(class_loader, *dex_file);
	}
	}

	void MakeDexFileExecutable(jobject class_loader, const DexFile& dex_file) {
	ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
	for (size_t i = 0; i < dex_file.NumClassDefs(); i++) {
	const DexFile::ClassDef& class_def = dex_file.GetClassDef(i);
	const char* descriptor = dex_file.GetClassDescriptor(class_def);
	ScopedObjectAccess soa(Thread::Current());
	StackHandleScope<1> hs(soa.Self());
	Handle<mirror::ClassLoader> loader(
	hs.NewHandle(soa.Decode<mirror::ClassLoader*>(class_loader)));
	mirror::Class* c = class_linker->FindClass(soa.Self(), descriptor, loader);
	CHECK(c != nullptr);
	const auto pointer_size = class_linker->GetImagePointerSize();
	for (auto& m : c->GetMethods(pointer_size)) {
	MakeExecutable(&m);
	}
	}
	}

	JNIEnv* env_;
	jclass class_;
	jmethodID mid_;
	};

	// Disabled due to 10 second runtime on host
	TEST_F(CompilerDriverTest, DISABLED_LARGE_CompileDexLibCore) {
	CompileAll(nullptr);

	// All libcore references should resolve
	ScopedObjectAccess soa(Thread::Current());
	ASSERT_TRUE(java_lang_dex_file_ != nullptr);
	const DexFile& dex = *java_lang_dex_file_;
	mirror::DexCache* dex_cache = class_linker_->FindDexCache(soa.Self(), dex);
	EXPECT_EQ(dex.NumStringIds(), dex_cache->NumStrings());
	for (size_t i = 0; i < dex_cache->NumStrings(); i++) {
	const mirror::String* string = dex_cache->GetResolvedString(i);
	EXPECT_TRUE(string != nullptr) << "string_idx=" << i;
	}
	EXPECT_EQ(dex.NumTypeIds(), dex_cache->NumResolvedTypes());
	for (size_t i = 0; i < dex_cache->NumResolvedTypes(); i++) {
	mirror::Class* type = dex_cache->GetResolvedType(i);
	EXPECT_TRUE(type != nullptr) << "type_idx=" << i
	<< " " << dex.GetTypeDescriptor(dex.GetTypeId(i));
	}
	EXPECT_EQ(dex.NumMethodIds(), dex_cache->NumResolvedMethods());
	auto* cl = Runtime::Current()->GetClassLinker();
	auto pointer_size = cl->GetImagePointerSize();
	for (size_t i = 0; i < dex_cache->NumResolvedMethods(); i++) {
	ArtMethod* method = dex_cache->GetResolvedMethod(i, pointer_size);
	EXPECT_TRUE(method != nullptr) << "method_idx=" << i
	<< " " << dex.GetMethodDeclaringClassDescriptor(dex.GetMethodId(i))
	<< " " << dex.GetMethodName(dex.GetMethodId(i));
	EXPECT_TRUE(method->GetEntryPointFromQuickCompiledCode() != nullptr) << "method_idx=" << i
	<< " " << dex.GetMethodDeclaringClassDescriptor(dex.GetMethodId(i)) << " "
	<< dex.GetMethodName(dex.GetMethodId(i));
	}
	EXPECT_EQ(dex.NumFieldIds(), dex_cache->NumResolvedFields());
	for (size_t i = 0; i < dex_cache->NumResolvedFields(); i++) {
	ArtField* field = cl->GetResolvedField(i, dex_cache);
	EXPECT_TRUE(field != nullptr) << "field_idx=" << i
	<< " " << dex.GetFieldDeclaringClassDescriptor(dex.GetFieldId(i))
	<< " " << dex.GetFieldName(dex.GetFieldId(i));
	}

	// TODO check Class::IsVerified for all classes

	// TODO: check that all Method::GetCode() values are non-null
	}

	TEST_F(CompilerDriverTest, DISABLED_AbstractMethodErrorStub) {
	TEST_DISABLED_FOR_HEAP_REFERENCE_POISONING_WITH_QUICK();
	TEST_DISABLED_FOR_READ_BARRIER_WITH_QUICK();
	TEST_DISABLED_FOR_READ_BARRIER_WITH_OPTIMIZING_FOR_UNSUPPORTED_INSTRUCTION_SETS();
	jobject class_loader;
	{
	ScopedObjectAccess soa(Thread::Current());
	CompileVirtualMethod(ScopedNullHandle<mirror::ClassLoader>(),
	"java.lang.Class",
	"isFinalizable",
	"()Z");
	CompileDirectMethod(ScopedNullHandle<mirror::ClassLoader>(),
	"java.lang.Object",
	"<init>",
	"()V");
	class_loader = LoadDex("AbstractMethod");
	}
	ASSERT_TRUE(class_loader != nullptr);
	EnsureCompiled(class_loader, "AbstractClass", "foo", "()V", true);

	// Create a jobj_ of ConcreteClass, NOT AbstractClass.
	jclass c_class = env_->FindClass("ConcreteClass");

	jmethodID constructor = env_->GetMethodID(c_class, "<init>", "()V");

	jobject jobj_ = env_->NewObject(c_class, constructor);
	ASSERT_TRUE(jobj_ != nullptr);

	// Force non-virtual call to AbstractClass foo, will throw AbstractMethodError exception.
	env_->CallNonvirtualVoidMethod(jobj_, class_, mid_);

	EXPECT_EQ(env_->ExceptionCheck(), JNI_TRUE);
	jthrowable exception = env_->ExceptionOccurred();
	env_->ExceptionClear();
	jclass jlame = env_->FindClass("java/lang/AbstractMethodError");
	EXPECT_TRUE(env_->IsInstanceOf(exception, jlame));
	{
	ScopedObjectAccess soa(Thread::Current());
	Thread::Current()->ClearException();
	}
	}

	class CompilerDriverMethodsTest : public CompilerDriverTest {
	protected:
	std::unordered_set<std::string>* GetCompiledMethods() OVERRIDE {
	return new std::unordered_set<std::string>({
	"byte StaticLeafMethods.identity(byte)",
	"int StaticLeafMethods.sum(int, int, int)",
	"double StaticLeafMethods.sum(double, double, double, double)"
	});
	}
	};

	TEST_F(CompilerDriverMethodsTest, Selection) {
	TEST_DISABLED_FOR_HEAP_REFERENCE_POISONING_WITH_QUICK();
	TEST_DISABLED_FOR_READ_BARRIER_WITH_QUICK();
	TEST_DISABLED_FOR_READ_BARRIER_WITH_OPTIMIZING_FOR_UNSUPPORTED_INSTRUCTION_SETS();
	Thread* self = Thread::Current();
	jobject class_loader;
	{
	ScopedObjectAccess soa(self);
	class_loader = LoadDex("StaticLeafMethods");
	}
	ASSERT_NE(class_loader, nullptr);

	// Need to enable dex-file writability. Methods rejected to be compiled will run through the
	// dex-to-dex compiler.
	for (const DexFile* dex_file : GetDexFiles(class_loader)) {
	ASSERT_TRUE(dex_file->EnableWrite());
	}

	CompileAll(class_loader);

	ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
	ScopedObjectAccess soa(self);
	StackHandleScope<1> hs(self);
	Handle<mirror::ClassLoader> h_loader(hs.NewHandle(
	reinterpret_cast<mirror::ClassLoader*>(self->DecodeJObject(class_loader))));
	mirror::Class* klass = class_linker->FindClass(self, "LStaticLeafMethods;", h_loader);
	ASSERT_NE(klass, nullptr);

	std::unique_ptr<std::unordered_set<std::string>> expected(GetCompiledMethods());

	const auto pointer_size = class_linker->GetImagePointerSize();
	for (auto& m : klass->GetDirectMethods(pointer_size)) {
	std::string name = PrettyMethod(&m, true);
	const void* code = m.GetEntryPointFromQuickCompiledCodePtrSize(pointer_size);
	ASSERT_NE(code, nullptr);
	if (expected->find(name) != expected->end()) {
	expected->erase(name);
	EXPECT_FALSE(class_linker->IsQuickToInterpreterBridge(code));
	} else {
	EXPECT_TRUE(class_linker->IsQuickToInterpreterBridge(code));
	}
	}
	EXPECT_TRUE(expected->empty());
	}

	class CompilerDriverProfileTest : public CompilerDriverTest {
	protected:
	ProfileCompilationInfo* GetProfileCompilationInfo() OVERRIDE {
	ScopedObjectAccess soa(Thread::Current());
	std::vector<std::unique_ptr<const DexFile>> dex_files = OpenTestDexFiles("ProfileTestMultiDex");

	ProfileCompilationInfo info;
	for (const std::unique_ptr<const DexFile>& dex_file : dex_files) {
	std::string key = ProfileCompilationInfo::GetProfileDexFileKey(dex_file->GetLocation());
	profile_info_.AddMethodIndex(key, dex_file->GetLocationChecksum(), 1);
	profile_info_.AddMethodIndex(key, dex_file->GetLocationChecksum(), 2);
	}
	return &profile_info_;
	}

	std::unordered_set<std::string> GetExpectedMethodsForClass(const std::string& clazz) {
	if (clazz == "Main") {
	return std::unordered_set<std::string>({
	"java.lang.String Main.getA()",
	"java.lang.String Main.getB()"});
	} else if (clazz == "Second") {
	return std::unordered_set<std::string>({
	"java.lang.String Second.getX()",
	"java.lang.String Second.getY()"});
	} else {
	return std::unordered_set<std::string>();
	}
	}

	void CheckCompiledMethods(jobject class_loader,
	const std::string& clazz,
	const std::unordered_set<std::string>& expected_methods) {
	ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
	Thread* self = Thread::Current();
	ScopedObjectAccess soa(self);
	StackHandleScope<1> hs(self);
	Handle<mirror::ClassLoader> h_loader(hs.NewHandle(
	reinterpret_cast<mirror::ClassLoader*>(self->DecodeJObject(class_loader))));
	mirror::Class* klass = class_linker->FindClass(self, clazz.c_str(), h_loader);
	ASSERT_NE(klass, nullptr);

	const auto pointer_size = class_linker->GetImagePointerSize();
	size_t number_of_compiled_methods = 0;
	for (auto& m : klass->GetVirtualMethods(pointer_size)) {
	std::string name = PrettyMethod(&m, true);
	const void* code = m.GetEntryPointFromQuickCompiledCodePtrSize(pointer_size);
	ASSERT_NE(code, nullptr);
	if (expected_methods.find(name) != expected_methods.end()) {
	number_of_compiled_methods++;
	EXPECT_FALSE(class_linker->IsQuickToInterpreterBridge(code));
	} else {
	EXPECT_TRUE(class_linker->IsQuickToInterpreterBridge(code));
	}
	}
	EXPECT_EQ(expected_methods.size(), number_of_compiled_methods);
	}

	private:
	ProfileCompilationInfo profile_info_;
	};

	TEST_F(CompilerDriverProfileTest, ProfileGuidedCompilation) {
	TEST_DISABLED_FOR_HEAP_REFERENCE_POISONING_WITH_QUICK();
	TEST_DISABLED_FOR_READ_BARRIER_WITH_QUICK();
	TEST_DISABLED_FOR_READ_BARRIER_WITH_OPTIMIZING_FOR_UNSUPPORTED_INSTRUCTION_SETS();
	Thread* self = Thread::Current();
	jobject class_loader;
	{
	ScopedObjectAccess soa(self);
	class_loader = LoadDex("ProfileTestMultiDex");
	}
	ASSERT_NE(class_loader, nullptr);

	// Need to enable dex-file writability. Methods rejected to be compiled will run through the
	// dex-to-dex compiler.
	ProfileCompilationInfo info;
	for (const DexFile* dex_file : GetDexFiles(class_loader)) {
	ASSERT_TRUE(dex_file->EnableWrite());
	}

	CompileAll(class_loader);

	std::unordered_set<std::string> m = GetExpectedMethodsForClass("Main");
	std::unordered_set<std::string> s = GetExpectedMethodsForClass("Second");
	CheckCompiledMethods(class_loader, "LMain;", m);
	CheckCompiledMethods(class_loader, "LSecond;", s);
	}

	// TODO: need check-cast test (when stub complete & we can throw/catch

	} // namespace art