/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "common_compiler_test.h"
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#include <type_traits>
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#include "arch/instruction_set_features.h"
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#include "art_field-inl.h"
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#include "art_method-inl.h"
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#include "base/callee_save_type.h"
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#include "base/casts.h"
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#include "base/enums.h"
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#include "base/utils.h"
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#include "class_linker.h"
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#include "compiled_method-inl.h"
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#include "dex/descriptors_names.h"
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#include "dex/verification_results.h"
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#include "driver/compiled_method_storage.h"
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#include "driver/compiler_options.h"
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#include "jni/java_vm_ext.h"
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#include "interpreter/interpreter.h"
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#include "mirror/class-inl.h"
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#include "mirror/class_loader.h"
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#include "mirror/dex_cache.h"
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#include "mirror/object-inl.h"
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#include "oat_quick_method_header.h"
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#include "scoped_thread_state_change-inl.h"
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#include "thread-current-inl.h"
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#include "utils/atomic_dex_ref_map-inl.h"
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namespace art {
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CommonCompilerTest::CommonCompilerTest() {}
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CommonCompilerTest::~CommonCompilerTest() {}
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void CommonCompilerTest::MakeExecutable(ArtMethod* method, const CompiledMethod* compiled_method) {
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CHECK(method != nullptr);
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// If the code size is 0 it means the method was skipped due to profile guided compilation.
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if (compiled_method != nullptr && compiled_method->GetQuickCode().size() != 0u) {
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ArrayRef<const uint8_t> code = compiled_method->GetQuickCode();
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const uint32_t code_size = code.size();
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ArrayRef<const uint8_t> vmap_table = compiled_method->GetVmapTable();
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const uint32_t vmap_table_offset = vmap_table.empty() ? 0u
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: sizeof(OatQuickMethodHeader) + vmap_table.size();
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OatQuickMethodHeader method_header(vmap_table_offset, code_size);
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header_code_and_maps_chunks_.push_back(std::vector<uint8_t>());
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std::vector<uint8_t>* chunk = &header_code_and_maps_chunks_.back();
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const size_t max_padding = GetInstructionSetAlignment(compiled_method->GetInstructionSet());
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const size_t size = vmap_table.size() + sizeof(method_header) + code_size;
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chunk->reserve(size + max_padding);
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chunk->resize(sizeof(method_header));
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static_assert(std::is_trivially_copyable<OatQuickMethodHeader>::value, "Cannot use memcpy");
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memcpy(&(*chunk)[0], &method_header, sizeof(method_header));
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chunk->insert(chunk->begin(), vmap_table.begin(), vmap_table.end());
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chunk->insert(chunk->end(), code.begin(), code.end());
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CHECK_EQ(chunk->size(), size);
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const void* unaligned_code_ptr = chunk->data() + (size - code_size);
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size_t offset = dchecked_integral_cast<size_t>(reinterpret_cast<uintptr_t>(unaligned_code_ptr));
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size_t padding = compiled_method->AlignCode(offset) - offset;
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// Make sure no resizing takes place.
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CHECK_GE(chunk->capacity(), chunk->size() + padding);
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chunk->insert(chunk->begin(), padding, 0);
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const void* code_ptr = reinterpret_cast<const uint8_t*>(unaligned_code_ptr) + padding;
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CHECK_EQ(code_ptr, static_cast<const void*>(chunk->data() + (chunk->size() - code_size)));
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MakeExecutable(code_ptr, code.size());
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const void* method_code = CompiledMethod::CodePointer(code_ptr,
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compiled_method->GetInstructionSet());
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LOG(INFO) << "MakeExecutable " << method->PrettyMethod() << " code=" << method_code;
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method->SetEntryPointFromQuickCompiledCode(method_code);
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} else {
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// No code? You must mean to go into the interpreter.
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// Or the generic JNI...
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class_linker_->SetEntryPointsToInterpreter(method);
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}
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}
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void CommonCompilerTest::MakeExecutable(const void* code_start, size_t code_length) {
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CHECK(code_start != nullptr);
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CHECK_NE(code_length, 0U);
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uintptr_t data = reinterpret_cast<uintptr_t>(code_start);
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uintptr_t base = RoundDown(data, kPageSize);
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uintptr_t limit = RoundUp(data + code_length, kPageSize);
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uintptr_t len = limit - base;
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int result = mprotect(reinterpret_cast<void*>(base), len, PROT_READ | PROT_WRITE | PROT_EXEC);
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CHECK_EQ(result, 0);
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CHECK(FlushCpuCaches(reinterpret_cast<void*>(base), reinterpret_cast<void*>(base + len)));
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}
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void CommonCompilerTest::SetUp() {
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CommonRuntimeTest::SetUp();
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{
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ScopedObjectAccess soa(Thread::Current());
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runtime_->SetInstructionSet(instruction_set_);
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for (uint32_t i = 0; i < static_cast<uint32_t>(CalleeSaveType::kLastCalleeSaveType); ++i) {
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CalleeSaveType type = CalleeSaveType(i);
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if (!runtime_->HasCalleeSaveMethod(type)) {
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runtime_->SetCalleeSaveMethod(runtime_->CreateCalleeSaveMethod(), type);
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}
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}
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}
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}
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void CommonCompilerTest::ApplyInstructionSet() {
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// Copy local instruction_set_ and instruction_set_features_ to *compiler_options_;
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CHECK(instruction_set_features_ != nullptr);
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if (instruction_set_ == InstructionSet::kThumb2) {
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CHECK_EQ(InstructionSet::kArm, instruction_set_features_->GetInstructionSet());
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} else {
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CHECK_EQ(instruction_set_, instruction_set_features_->GetInstructionSet());
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}
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compiler_options_->instruction_set_ = instruction_set_;
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compiler_options_->instruction_set_features_ =
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InstructionSetFeatures::FromBitmap(instruction_set_, instruction_set_features_->AsBitmap());
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CHECK(compiler_options_->instruction_set_features_->Equals(instruction_set_features_.get()));
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}
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void CommonCompilerTest::OverrideInstructionSetFeatures(InstructionSet instruction_set,
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const std::string& variant) {
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instruction_set_ = instruction_set;
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std::string error_msg;
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instruction_set_features_ =
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InstructionSetFeatures::FromVariant(instruction_set, variant, &error_msg);
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CHECK(instruction_set_features_ != nullptr) << error_msg;
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if (compiler_options_ != nullptr) {
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ApplyInstructionSet();
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}
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}
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void CommonCompilerTest::SetUpRuntimeOptions(RuntimeOptions* options) {
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CommonRuntimeTest::SetUpRuntimeOptions(options);
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compiler_options_.reset(new CompilerOptions);
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verification_results_.reset(new VerificationResults(compiler_options_.get()));
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ApplyInstructionSet();
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}
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Compiler::Kind CommonCompilerTest::GetCompilerKind() const {
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return compiler_kind_;
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}
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void CommonCompilerTest::SetCompilerKind(Compiler::Kind compiler_kind) {
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compiler_kind_ = compiler_kind;
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}
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void CommonCompilerTest::TearDown() {
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verification_results_.reset();
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compiler_options_.reset();
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CommonRuntimeTest::TearDown();
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}
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void CommonCompilerTest::CompileMethod(ArtMethod* method) {
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CHECK(method != nullptr);
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TimingLogger timings("CommonCompilerTest::CompileMethod", false, false);
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TimingLogger::ScopedTiming t(__FUNCTION__, &timings);
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CompiledMethodStorage storage(/*swap_fd=*/ -1);
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CompiledMethod* compiled_method = nullptr;
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{
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DCHECK(!Runtime::Current()->IsStarted());
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Thread* self = Thread::Current();
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StackHandleScope<2> hs(self);
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std::unique_ptr<Compiler> compiler(
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Compiler::Create(*compiler_options_, &storage, compiler_kind_));
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const DexFile& dex_file = *method->GetDexFile();
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Handle<mirror::DexCache> dex_cache = hs.NewHandle(class_linker_->FindDexCache(self, dex_file));
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Handle<mirror::ClassLoader> class_loader = hs.NewHandle(method->GetClassLoader());
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compiler_options_->verification_results_ = verification_results_.get();
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if (method->IsNative()) {
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compiled_method = compiler->JniCompile(method->GetAccessFlags(),
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method->GetDexMethodIndex(),
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dex_file,
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dex_cache);
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} else {
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verification_results_->AddDexFile(&dex_file);
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verification_results_->CreateVerifiedMethodFor(
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MethodReference(&dex_file, method->GetDexMethodIndex()));
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compiled_method = compiler->Compile(method->GetCodeItem(),
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method->GetAccessFlags(),
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method->GetInvokeType(),
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method->GetClassDefIndex(),
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method->GetDexMethodIndex(),
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class_loader,
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dex_file,
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dex_cache);
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}
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compiler_options_->verification_results_ = nullptr;
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}
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CHECK(method != nullptr);
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{
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TimingLogger::ScopedTiming t2("MakeExecutable", &timings);
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MakeExecutable(method, compiled_method);
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}
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CompiledMethod::ReleaseSwapAllocatedCompiledMethod(&storage, compiled_method);
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}
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void CommonCompilerTest::CompileDirectMethod(Handle<mirror::ClassLoader> class_loader,
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const char* class_name, const char* method_name,
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const char* signature) {
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std::string class_descriptor(DotToDescriptor(class_name));
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Thread* self = Thread::Current();
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ObjPtr<mirror::Class> klass =
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class_linker_->FindClass(self, class_descriptor.c_str(), class_loader);
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CHECK(klass != nullptr) << "Class not found " << class_name;
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auto pointer_size = class_linker_->GetImagePointerSize();
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ArtMethod* method = klass->FindClassMethod(method_name, signature, pointer_size);
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CHECK(method != nullptr && method->IsDirect()) << "Direct method not found: "
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<< class_name << "." << method_name << signature;
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CompileMethod(method);
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}
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void CommonCompilerTest::CompileVirtualMethod(Handle<mirror::ClassLoader> class_loader,
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const char* class_name, const char* method_name,
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const char* signature) {
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std::string class_descriptor(DotToDescriptor(class_name));
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Thread* self = Thread::Current();
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ObjPtr<mirror::Class> klass =
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class_linker_->FindClass(self, class_descriptor.c_str(), class_loader);
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CHECK(klass != nullptr) << "Class not found " << class_name;
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auto pointer_size = class_linker_->GetImagePointerSize();
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ArtMethod* method = klass->FindClassMethod(method_name, signature, pointer_size);
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CHECK(method != nullptr && !method->IsDirect()) << "Virtual method not found: "
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<< class_name << "." << method_name << signature;
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CompileMethod(method);
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}
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void CommonCompilerTest::ClearBootImageOption() {
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compiler_options_->image_type_ = CompilerOptions::ImageType::kNone;
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}
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} // namespace art
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