compiler/common_compiler_test.cc - LeafOS-Project/android_art - Gitiles

 /*
  * 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 "common_compiler_test.h"

 #include <android-base/unique_fd.h>
 #include <type_traits>

 #include "arch/instruction_set_features.h"
 #include "art_field-inl.h"
 #include "art_method-inl.h"
 #include "base/callee_save_type.h"
 #include "base/casts.h"
 #include "base/enums.h"
 #include "base/memfd.h"
 #include "base/utils.h"
 #include "class_linker.h"
 #include "compiled_method-inl.h"
 #include "dex/descriptors_names.h"
 #include "dex/verification_results.h"
 #include "driver/compiled_method_storage.h"
 #include "driver/compiler_options.h"
 #include "jni/java_vm_ext.h"
 #include "interpreter/interpreter.h"
 #include "mirror/class-inl.h"
 #include "mirror/class_loader.h"
 #include "mirror/dex_cache.h"
 #include "mirror/object-inl.h"
 #include "oat_quick_method_header.h"
 #include "scoped_thread_state_change-inl.h"
 #include "thread-current-inl.h"
 #include "utils/atomic_dex_ref_map-inl.h"

 namespace art {

 class CommonCompilerTestImpl::CodeAndMetadata {
  public:
   CodeAndMetadata(CodeAndMetadata&& other) = default;

   CodeAndMetadata(ArrayRef<const uint8_t> code,
                   ArrayRef<const uint8_t> vmap_table,
                   InstructionSet instruction_set) {
     const uint32_t code_size = code.size();
     CHECK_NE(code_size, 0u);
     const uint32_t vmap_table_offset = vmap_table.empty() ? 0u
         : sizeof(OatQuickMethodHeader) + vmap_table.size();
     OatQuickMethodHeader method_header(vmap_table_offset, code_size);
     const size_t code_alignment = GetInstructionSetAlignment(instruction_set);
     DCHECK_ALIGNED_PARAM(kPageSize, code_alignment);
     code_offset_ = RoundUp(vmap_table.size() + sizeof(method_header), code_alignment);
     const uint32_t capacity = RoundUp(code_offset_ + code_size, kPageSize);

     // Create a memfd handle with sufficient capacity.
     android::base::unique_fd mem_fd(art::memfd_create_compat("test code", /*flags=*/ 0));
     CHECK_GE(mem_fd.get(), 0);
     int err = ftruncate(mem_fd, capacity);
     CHECK_EQ(err, 0);

     // Map the memfd contents for read/write.
     std::string error_msg;
     rw_map_ = MemMap::MapFile(capacity,
                               PROT_READ | PROT_WRITE,
                               MAP_SHARED,
                               mem_fd,
                               /*start=*/ 0,
                               /*low_4gb=*/ false,
                               /*filename=*/ "test code",
                               &error_msg);
     CHECK(rw_map_.IsValid()) << error_msg;

     // Store data.
     uint8_t* code_addr = rw_map_.Begin() + code_offset_;
     CHECK_ALIGNED_PARAM(code_addr, code_alignment);
     CHECK_LE(vmap_table_offset, code_offset_);
     memcpy(code_addr - vmap_table_offset, vmap_table.data(), vmap_table.size());
     static_assert(std::is_trivially_copyable<OatQuickMethodHeader>::value, "Cannot use memcpy");
     CHECK_LE(sizeof(method_header), code_offset_);
     memcpy(code_addr - sizeof(method_header), &method_header, sizeof(method_header));
     CHECK_LE(code_size, static_cast<size_t>(rw_map_.End() - code_addr));
     memcpy(code_addr, code.data(), code_size);

     // Sync data.
     bool success = rw_map_.Sync();
     CHECK(success);
     success = FlushCpuCaches(rw_map_.Begin(), rw_map_.End());
     CHECK(success);

     // Map the data as read/executable.
     rx_map_ = MemMap::MapFile(capacity,
                               PROT_READ | PROT_EXEC,
                               MAP_SHARED,
                               mem_fd,
                               /*start=*/ 0,
                               /*low_4gb=*/ false,
                               /*filename=*/ "test code",
                               &error_msg);
     CHECK(rx_map_.IsValid()) << error_msg;
   }

   const void* GetCodePointer() const {
     DCHECK(rx_map_.IsValid());
     DCHECK_LE(code_offset_, rx_map_.Size());
     return rx_map_.Begin() + code_offset_;
   }

  private:
   MemMap rw_map_;
   MemMap rx_map_;
   uint32_t code_offset_;

   DISALLOW_COPY_AND_ASSIGN(CodeAndMetadata);
 };

 std::unique_ptr<CompilerOptions> CommonCompilerTestImpl::CreateCompilerOptions(
     InstructionSet instruction_set, const std::string& variant) {
   std::unique_ptr<CompilerOptions> compiler_options = std::make_unique<CompilerOptions>();
   compiler_options->instruction_set_ = instruction_set;
   std::string error_msg;
   compiler_options->instruction_set_features_ =
       InstructionSetFeatures::FromVariant(instruction_set, variant, &error_msg);
   CHECK(compiler_options->instruction_set_features_ != nullptr) << error_msg;
   return compiler_options;
 }

 CommonCompilerTestImpl::CommonCompilerTestImpl() {}
 CommonCompilerTestImpl::~CommonCompilerTestImpl() {}

 const void* CommonCompilerTestImpl::MakeExecutable(ArrayRef<const uint8_t> code,
                                                    ArrayRef<const uint8_t> vmap_table,
                                                    InstructionSet instruction_set) {
   CHECK_NE(code.size(), 0u);
   code_and_metadata_.emplace_back(code, vmap_table, instruction_set);
   return code_and_metadata_.back().GetCodePointer();
 }

 void CommonCompilerTestImpl::MakeExecutable(ArtMethod* method,
                                             const CompiledMethod* compiled_method) {
   CHECK(method != nullptr);
   // If the code size is 0 it means the method was skipped due to profile guided compilation.
   if (compiled_method != nullptr && compiled_method->GetQuickCode().size() != 0u) {
     const void* code_ptr = MakeExecutable(compiled_method->GetQuickCode(),
                                           compiled_method->GetVmapTable(),
                                           compiled_method->GetInstructionSet());
     const void* method_code =
         CompiledMethod::CodePointer(code_ptr, compiled_method->GetInstructionSet());
     LOG(INFO) << "MakeExecutable " << method->PrettyMethod() << " code=" << method_code;
     method->SetEntryPointFromQuickCompiledCode(method_code);
   } else {
     // No code? You must mean to go into the interpreter.
     // Or the generic JNI...
     GetClassLinker()->SetEntryPointsToInterpreter(method);
   }
 }

 void CommonCompilerTestImpl::SetUp() {
   {
     ScopedObjectAccess soa(Thread::Current());

     Runtime* runtime = GetRuntime();
     runtime->SetInstructionSet(instruction_set_);
     for (uint32_t i = 0; i < static_cast<uint32_t>(CalleeSaveType::kLastCalleeSaveType); ++i) {
       CalleeSaveType type = CalleeSaveType(i);
       if (!runtime->HasCalleeSaveMethod(type)) {
         runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type);
       }
     }
   }
 }

 void CommonCompilerTestImpl::ApplyInstructionSet() {
   // Copy local instruction_set_ and instruction_set_features_ to *compiler_options_;
   CHECK(instruction_set_features_ != nullptr);
   if (instruction_set_ == InstructionSet::kThumb2) {
     CHECK_EQ(InstructionSet::kArm, instruction_set_features_->GetInstructionSet());
   } else {
     CHECK_EQ(instruction_set_, instruction_set_features_->GetInstructionSet());
   }
   compiler_options_->instruction_set_ = instruction_set_;
   compiler_options_->instruction_set_features_ =
       InstructionSetFeatures::FromBitmap(instruction_set_, instruction_set_features_->AsBitmap());
   CHECK(compiler_options_->instruction_set_features_->Equals(instruction_set_features_.get()));
 }

 void CommonCompilerTestImpl::OverrideInstructionSetFeatures(InstructionSet instruction_set,
                                                             const std::string& variant) {
   instruction_set_ = instruction_set;
   std::string error_msg;
   instruction_set_features_ =
       InstructionSetFeatures::FromVariant(instruction_set, variant, &error_msg);
   CHECK(instruction_set_features_ != nullptr) << error_msg;

   if (compiler_options_ != nullptr) {
     ApplyInstructionSet();
   }
 }

 void CommonCompilerTestImpl::SetUpRuntimeOptionsImpl() {
   compiler_options_.reset(new CompilerOptions);
   verification_results_.reset(new VerificationResults(compiler_options_.get()));

   ApplyInstructionSet();
 }

 Compiler::Kind CommonCompilerTestImpl::GetCompilerKind() const {
   return compiler_kind_;
 }

 void CommonCompilerTestImpl::SetCompilerKind(Compiler::Kind compiler_kind) {
   compiler_kind_ = compiler_kind;
 }

 void CommonCompilerTestImpl::TearDown() {
   code_and_metadata_.clear();
   verification_results_.reset();
   compiler_options_.reset();
 }

 void CommonCompilerTestImpl::CompileMethod(ArtMethod* method) {
   CHECK(method != nullptr);
   TimingLogger timings("CommonCompilerTestImpl::CompileMethod", false, false);
   TimingLogger::ScopedTiming t(__FUNCTION__, &timings);
   CompiledMethodStorage storage(/*swap_fd=*/ -1);
   CompiledMethod* compiled_method = nullptr;
   {
     DCHECK(!Runtime::Current()->IsStarted());
     Thread* self = Thread::Current();
     StackHandleScope<2> hs(self);
     std::unique_ptr<Compiler> compiler(
         Compiler::Create(*compiler_options_, &storage, compiler_kind_));
     const DexFile& dex_file = *method->GetDexFile();
     Handle<mirror::DexCache> dex_cache =
         hs.NewHandle(GetClassLinker()->FindDexCache(self, dex_file));
     Handle<mirror::ClassLoader> class_loader = hs.NewHandle(method->GetClassLoader());
     compiler_options_->verification_results_ = verification_results_.get();
     if (method->IsNative()) {
       compiled_method = compiler->JniCompile(method->GetAccessFlags(),
                                              method->GetDexMethodIndex(),
                                              dex_file,
                                              dex_cache);
     } else {
       verification_results_->AddDexFile(&dex_file);
       verification_results_->CreateVerifiedMethodFor(
           MethodReference(&dex_file, method->GetDexMethodIndex()));
       compiled_method = compiler->Compile(method->GetCodeItem(),
                                           method->GetAccessFlags(),
                                           method->GetInvokeType(),
                                           method->GetClassDefIndex(),
                                           method->GetDexMethodIndex(),
                                           class_loader,
                                           dex_file,
                                           dex_cache);
     }
     compiler_options_->verification_results_ = nullptr;
   }
   CHECK(method != nullptr);
   {
     TimingLogger::ScopedTiming t2("MakeExecutable", &timings);
     MakeExecutable(method, compiled_method);
   }
   CompiledMethod::ReleaseSwapAllocatedCompiledMethod(&storage, compiled_method);
 }

 void CommonCompilerTestImpl::CompileDirectMethod(Handle<mirror::ClassLoader> class_loader,
                                                  const char* class_name,
                                                  const char* method_name,
                                                  const char* signature) {
   std::string class_descriptor(DotToDescriptor(class_name));
   Thread* self = Thread::Current();
   ClassLinker* class_linker = GetClassLinker();
   ObjPtr<mirror::Class> klass =
       class_linker->FindClass(self, class_descriptor.c_str(), class_loader);
   CHECK(klass != nullptr) << "Class not found " << class_name;
   auto pointer_size = class_linker->GetImagePointerSize();
   ArtMethod* method = klass->FindClassMethod(method_name, signature, pointer_size);
   CHECK(method != nullptr && method->IsDirect()) << "Direct method not found: "
       << class_name << "." << method_name << signature;
   CompileMethod(method);
 }

 void CommonCompilerTestImpl::CompileVirtualMethod(Handle<mirror::ClassLoader> class_loader,
                                                   const char* class_name,
                                                   const char* method_name,
                                                   const char* signature) {
   std::string class_descriptor(DotToDescriptor(class_name));
   Thread* self = Thread::Current();
   ClassLinker* class_linker = GetClassLinker();
   ObjPtr<mirror::Class> klass =
       class_linker->FindClass(self, class_descriptor.c_str(), class_loader);
   CHECK(klass != nullptr) << "Class not found " << class_name;
   auto pointer_size = class_linker->GetImagePointerSize();
   ArtMethod* method = klass->FindClassMethod(method_name, signature, pointer_size);
   CHECK(method != nullptr && !method->IsDirect()) << "Virtual method not found: "
       << class_name << "." << method_name << signature;
   CompileMethod(method);
 }

 void CommonCompilerTestImpl::ClearBootImageOption() {
   compiler_options_->image_type_ = CompilerOptions::ImageType::kNone;
 }

 }  // 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 "common_compiler_test.h"

	#include <android-base/unique_fd.h>
	#include <type_traits>

	#include "arch/instruction_set_features.h"
	#include "art_field-inl.h"
	#include "art_method-inl.h"
	#include "base/callee_save_type.h"
	#include "base/casts.h"
	#include "base/enums.h"
	#include "base/memfd.h"
	#include "base/utils.h"
	#include "class_linker.h"
	#include "compiled_method-inl.h"
	#include "dex/descriptors_names.h"
	#include "dex/verification_results.h"
	#include "driver/compiled_method_storage.h"
	#include "driver/compiler_options.h"
	#include "jni/java_vm_ext.h"
	#include "interpreter/interpreter.h"
	#include "mirror/class-inl.h"
	#include "mirror/class_loader.h"
	#include "mirror/dex_cache.h"
	#include "mirror/object-inl.h"
	#include "oat_quick_method_header.h"
	#include "scoped_thread_state_change-inl.h"
	#include "thread-current-inl.h"
	#include "utils/atomic_dex_ref_map-inl.h"

	namespace art {

	class CommonCompilerTestImpl::CodeAndMetadata {
	public:
	CodeAndMetadata(CodeAndMetadata&& other) = default;

	CodeAndMetadata(ArrayRef<const uint8_t> code,
	ArrayRef<const uint8_t> vmap_table,
	InstructionSet instruction_set) {
	const uint32_t code_size = code.size();
	CHECK_NE(code_size, 0u);
	const uint32_t vmap_table_offset = vmap_table.empty() ? 0u
	: sizeof(OatQuickMethodHeader) + vmap_table.size();
	OatQuickMethodHeader method_header(vmap_table_offset, code_size);
	const size_t code_alignment = GetInstructionSetAlignment(instruction_set);
	DCHECK_ALIGNED_PARAM(kPageSize, code_alignment);
	code_offset_ = RoundUp(vmap_table.size() + sizeof(method_header), code_alignment);
	const uint32_t capacity = RoundUp(code_offset_ + code_size, kPageSize);

	// Create a memfd handle with sufficient capacity.
	android::base::unique_fd mem_fd(art::memfd_create_compat("test code", /flags=/ 0));
	CHECK_GE(mem_fd.get(), 0);
	int err = ftruncate(mem_fd, capacity);
	CHECK_EQ(err, 0);

	// Map the memfd contents for read/write.
	std::string error_msg;
	rw_map_ = MemMap::MapFile(capacity,
	PROT_READ \| PROT_WRITE,
	MAP_SHARED,
	mem_fd,
	/start=/ 0,
	/low_4gb=/ false,
	/filename=/ "test code",
	&error_msg);
	CHECK(rw_map_.IsValid()) << error_msg;

	// Store data.
	uint8_t* code_addr = rw_map_.Begin() + code_offset_;
	CHECK_ALIGNED_PARAM(code_addr, code_alignment);
	CHECK_LE(vmap_table_offset, code_offset_);
	memcpy(code_addr - vmap_table_offset, vmap_table.data(), vmap_table.size());
	static_assert(std::is_trivially_copyable<OatQuickMethodHeader>::value, "Cannot use memcpy");
	CHECK_LE(sizeof(method_header), code_offset_);
	memcpy(code_addr - sizeof(method_header), &method_header, sizeof(method_header));
	CHECK_LE(code_size, static_cast<size_t>(rw_map_.End() - code_addr));
	memcpy(code_addr, code.data(), code_size);

	// Sync data.
	bool success = rw_map_.Sync();
	CHECK(success);
	success = FlushCpuCaches(rw_map_.Begin(), rw_map_.End());
	CHECK(success);

	// Map the data as read/executable.
	rx_map_ = MemMap::MapFile(capacity,
	PROT_READ \| PROT_EXEC,
	MAP_SHARED,
	mem_fd,
	/start=/ 0,
	/low_4gb=/ false,
	/filename=/ "test code",
	&error_msg);
	CHECK(rx_map_.IsValid()) << error_msg;
	}

	const void* GetCodePointer() const {
	DCHECK(rx_map_.IsValid());
	DCHECK_LE(code_offset_, rx_map_.Size());
	return rx_map_.Begin() + code_offset_;
	}

	private:
	MemMap rw_map_;
	MemMap rx_map_;
	uint32_t code_offset_;

	DISALLOW_COPY_AND_ASSIGN(CodeAndMetadata);
	};

	std::unique_ptr<CompilerOptions> CommonCompilerTestImpl::CreateCompilerOptions(
	InstructionSet instruction_set, const std::string& variant) {
	std::unique_ptr<CompilerOptions> compiler_options = std::make_unique<CompilerOptions>();
	compiler_options->instruction_set_ = instruction_set;
	std::string error_msg;
	compiler_options->instruction_set_features_ =
	InstructionSetFeatures::FromVariant(instruction_set, variant, &error_msg);
	CHECK(compiler_options->instruction_set_features_ != nullptr) << error_msg;
	return compiler_options;
	}

	CommonCompilerTestImpl::CommonCompilerTestImpl() {}
	CommonCompilerTestImpl::~CommonCompilerTestImpl() {}

	const void* CommonCompilerTestImpl::MakeExecutable(ArrayRef<const uint8_t> code,
	ArrayRef<const uint8_t> vmap_table,
	InstructionSet instruction_set) {
	CHECK_NE(code.size(), 0u);
	code_and_metadata_.emplace_back(code, vmap_table, instruction_set);
	return code_and_metadata_.back().GetCodePointer();
	}

	void CommonCompilerTestImpl::MakeExecutable(ArtMethod* method,
	const CompiledMethod* compiled_method) {
	CHECK(method != nullptr);
	// If the code size is 0 it means the method was skipped due to profile guided compilation.
	if (compiled_method != nullptr && compiled_method->GetQuickCode().size() != 0u) {
	const void* code_ptr = MakeExecutable(compiled_method->GetQuickCode(),
	compiled_method->GetVmapTable(),
	compiled_method->GetInstructionSet());
	const void* method_code =
	CompiledMethod::CodePointer(code_ptr, compiled_method->GetInstructionSet());
	LOG(INFO) << "MakeExecutable " << method->PrettyMethod() << " code=" << method_code;
	method->SetEntryPointFromQuickCompiledCode(method_code);
	} else {
	// No code? You must mean to go into the interpreter.
	// Or the generic JNI...
	GetClassLinker()->SetEntryPointsToInterpreter(method);
	}
	}

	void CommonCompilerTestImpl::SetUp() {
	{
	ScopedObjectAccess soa(Thread::Current());

	Runtime* runtime = GetRuntime();
	runtime->SetInstructionSet(instruction_set_);
	for (uint32_t i = 0; i < static_cast<uint32_t>(CalleeSaveType::kLastCalleeSaveType); ++i) {
	CalleeSaveType type = CalleeSaveType(i);
	if (!runtime->HasCalleeSaveMethod(type)) {
	runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(), type);
	}
	}
	}
	}

	void CommonCompilerTestImpl::ApplyInstructionSet() {
	// Copy local instruction_set_ and instruction_set_features_ to *compiler_options_;
	CHECK(instruction_set_features_ != nullptr);
	if (instruction_set_ == InstructionSet::kThumb2) {
	CHECK_EQ(InstructionSet::kArm, instruction_set_features_->GetInstructionSet());
	} else {
	CHECK_EQ(instruction_set_, instruction_set_features_->GetInstructionSet());
	}
	compiler_options_->instruction_set_ = instruction_set_;
	compiler_options_->instruction_set_features_ =
	InstructionSetFeatures::FromBitmap(instruction_set_, instruction_set_features_->AsBitmap());
	CHECK(compiler_options_->instruction_set_features_->Equals(instruction_set_features_.get()));
	}

	void CommonCompilerTestImpl::OverrideInstructionSetFeatures(InstructionSet instruction_set,
	const std::string& variant) {
	instruction_set_ = instruction_set;
	std::string error_msg;
	instruction_set_features_ =
	InstructionSetFeatures::FromVariant(instruction_set, variant, &error_msg);
	CHECK(instruction_set_features_ != nullptr) << error_msg;

	if (compiler_options_ != nullptr) {
	ApplyInstructionSet();
	}
	}

	void CommonCompilerTestImpl::SetUpRuntimeOptionsImpl() {
	compiler_options_.reset(new CompilerOptions);
	verification_results_.reset(new VerificationResults(compiler_options_.get()));

	ApplyInstructionSet();
	}

	Compiler::Kind CommonCompilerTestImpl::GetCompilerKind() const {
	return compiler_kind_;
	}

	void CommonCompilerTestImpl::SetCompilerKind(Compiler::Kind compiler_kind) {
	compiler_kind_ = compiler_kind;
	}

	void CommonCompilerTestImpl::TearDown() {
	code_and_metadata_.clear();
	verification_results_.reset();
	compiler_options_.reset();
	}

	void CommonCompilerTestImpl::CompileMethod(ArtMethod* method) {
	CHECK(method != nullptr);
	TimingLogger timings("CommonCompilerTestImpl::CompileMethod", false, false);
	TimingLogger::ScopedTiming t(__FUNCTION__, &timings);
	CompiledMethodStorage storage(/swap_fd=/ -1);
	CompiledMethod* compiled_method = nullptr;
	{
	DCHECK(!Runtime::Current()->IsStarted());
	Thread* self = Thread::Current();
	StackHandleScope<2> hs(self);
	std::unique_ptr<Compiler> compiler(
	Compiler::Create(*compiler_options_, &storage, compiler_kind_));
	const DexFile& dex_file = *method->GetDexFile();
	Handle<mirror::DexCache> dex_cache =
	hs.NewHandle(GetClassLinker()->FindDexCache(self, dex_file));
	Handle<mirror::ClassLoader> class_loader = hs.NewHandle(method->GetClassLoader());
	compiler_options_->verification_results_ = verification_results_.get();
	if (method->IsNative()) {
	compiled_method = compiler->JniCompile(method->GetAccessFlags(),
	method->GetDexMethodIndex(),
	dex_file,
	dex_cache);
	} else {
	verification_results_->AddDexFile(&dex_file);
	verification_results_->CreateVerifiedMethodFor(
	MethodReference(&dex_file, method->GetDexMethodIndex()));
	compiled_method = compiler->Compile(method->GetCodeItem(),
	method->GetAccessFlags(),
	method->GetInvokeType(),
	method->GetClassDefIndex(),
	method->GetDexMethodIndex(),
	class_loader,
	dex_file,
	dex_cache);
	}
	compiler_options_->verification_results_ = nullptr;
	}
	CHECK(method != nullptr);
	{
	TimingLogger::ScopedTiming t2("MakeExecutable", &timings);
	MakeExecutable(method, compiled_method);
	}
	CompiledMethod::ReleaseSwapAllocatedCompiledMethod(&storage, compiled_method);
	}

	void CommonCompilerTestImpl::CompileDirectMethod(Handle<mirror::ClassLoader> class_loader,
	const char* class_name,
	const char* method_name,
	const char* signature) {
	std::string class_descriptor(DotToDescriptor(class_name));
	Thread* self = Thread::Current();
	ClassLinker* class_linker = GetClassLinker();
	ObjPtr<mirror::Class> klass =
	class_linker->FindClass(self, class_descriptor.c_str(), class_loader);
	CHECK(klass != nullptr) << "Class not found " << class_name;
	auto pointer_size = class_linker->GetImagePointerSize();
	ArtMethod* method = klass->FindClassMethod(method_name, signature, pointer_size);
	CHECK(method != nullptr && method->IsDirect()) << "Direct method not found: "
	<< class_name << "." << method_name << signature;
	CompileMethod(method);
	}

	void CommonCompilerTestImpl::CompileVirtualMethod(Handle<mirror::ClassLoader> class_loader,
	const char* class_name,
	const char* method_name,
	const char* signature) {
	std::string class_descriptor(DotToDescriptor(class_name));
	Thread* self = Thread::Current();
	ClassLinker* class_linker = GetClassLinker();
	ObjPtr<mirror::Class> klass =
	class_linker->FindClass(self, class_descriptor.c_str(), class_loader);
	CHECK(klass != nullptr) << "Class not found " << class_name;
	auto pointer_size = class_linker->GetImagePointerSize();
	ArtMethod* method = klass->FindClassMethod(method_name, signature, pointer_size);
	CHECK(method != nullptr && !method->IsDirect()) << "Virtual method not found: "
	<< class_name << "." << method_name << signature;
	CompileMethod(method);
	}

	void CommonCompilerTestImpl::ClearBootImageOption() {
	compiler_options_->image_type_ = CompilerOptions::ImageType::kNone;
	}

	} // namespace art