compiler_driver-inl.h revision e5f13e57ff8fa36342beb33830b3ec5942a61cca
1be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko/* 2be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * Copyright (C) 2012 The Android Open Source Project 3be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * 4be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * Licensed under the Apache License, Version 2.0 (the "License"); 5be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * you may not use this file except in compliance with the License. 6be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * You may obtain a copy of the License at 7be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * 8be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * http://www.apache.org/licenses/LICENSE-2.0 9be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * 10be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * Unless required by applicable law or agreed to in writing, software 11be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * distributed under the License is distributed on an "AS IS" BASIS, 12be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * See the License for the specific language governing permissions and 14be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko * limitations under the License. 15be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko */ 16be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 17be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#ifndef ART_COMPILER_DRIVER_COMPILER_DRIVER_INL_H_ 18be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#define ART_COMPILER_DRIVER_COMPILER_DRIVER_INL_H_ 19be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 20be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "compiler_driver.h" 2198d1cc8033251c93786e2fa8c59a2e555a9493beMingyao Yang 2253c913bb71b218714823c8c87a1f92830c336f61Andreas Gampe#include "dex_compilation_unit.h" 23be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "mirror/art_field-inl.h" 24f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko#include "mirror/art_method-inl.h" 25be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "mirror/class_loader.h" 26f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko#include "mirror/dex_cache-inl.h" 27be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "mirror/art_field-inl.h" 28be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "scoped_thread_state_change.h" 29eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier#include "handle_scope-inl.h" 30be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 31be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markonamespace art { 32be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 33be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline mirror::DexCache* CompilerDriver::GetDexCache(const DexCompilationUnit* mUnit) { 34be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile()); 35be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 36be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 37be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline mirror::ClassLoader* CompilerDriver::GetClassLoader(ScopedObjectAccess& soa, 38be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexCompilationUnit* mUnit) { 39be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader()); 40be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 41be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 42be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline mirror::Class* CompilerDriver::ResolveCompilingMethodsClass( 43e50383288a75244255d3ecedcc79ffe9caf774cbNicolas Geoffray const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 440cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit) { 45eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile()); 46eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DCHECK_EQ(class_loader.Get(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 47be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexFile::MethodId& referrer_method_id = 48be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mUnit->GetDexFile()->GetMethodId(mUnit->GetDexMethodIndex()); 49be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::Class* referrer_class = mUnit->GetClassLinker()->ResolveType( 50be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *mUnit->GetDexFile(), referrer_method_id.class_idx_, dex_cache, class_loader); 51be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko DCHECK_EQ(referrer_class == nullptr, soa.Self()->IsExceptionPending()); 52be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (UNLIKELY(referrer_class == nullptr)) { 53be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Clean up any exception left by type resolution. 54be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko soa.Self()->ClearException(); 55be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 56be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return referrer_class; 57be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 58be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 59e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartierinline mirror::ArtField* CompilerDriver::ResolveFieldWithDexFile( 60e50383288a75244255d3ecedcc79ffe9caf774cbNicolas Geoffray const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 61e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexFile* dex_file, 62be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko uint32_t field_idx, bool is_static) { 63e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier DCHECK_EQ(dex_cache->GetDexFile(), dex_file); 64e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier mirror::ArtField* resolved_field = Runtime::Current()->GetClassLinker()->ResolveField( 65e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier *dex_file, field_idx, dex_cache, class_loader, is_static); 66be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko DCHECK_EQ(resolved_field == nullptr, soa.Self()->IsExceptionPending()); 67be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (UNLIKELY(resolved_field == nullptr)) { 68be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Clean up any exception left by type resolution. 69be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko soa.Self()->ClearException(); 70be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return nullptr; 71be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 72be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (UNLIKELY(resolved_field->IsStatic() != is_static)) { 73be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // ClassLinker can return a field of the wrong kind directly from the DexCache. 74be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Silently return nullptr on such incompatible class change. 75be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return nullptr; 76be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 77be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return resolved_field; 78be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 79be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 80e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartierinline mirror::DexCache* CompilerDriver::FindDexCache(const DexFile* dex_file) { 81e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier return Runtime::Current()->GetClassLinker()->FindDexCache(*dex_file); 82e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier} 83e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier 84e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartierinline mirror::ArtField* CompilerDriver::ResolveField( 85e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 86e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 87e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier uint32_t field_idx, bool is_static) { 88e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier DCHECK_EQ(class_loader.Get(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 89e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier return ResolveFieldWithDexFile(soa, dex_cache, class_loader, mUnit->GetDexFile(), field_idx, 90e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier is_static); 91e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier} 92e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier 93be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline void CompilerDriver::GetResolvedFieldDexFileLocation( 94be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::ArtField* resolved_field, const DexFile** declaring_dex_file, 95be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko uint16_t* declaring_class_idx, uint16_t* declaring_field_idx) { 96be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::Class* declaring_class = resolved_field->GetDeclaringClass(); 97be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *declaring_dex_file = declaring_class->GetDexCache()->GetDexFile(); 98be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *declaring_class_idx = declaring_class->GetDexTypeIndex(); 99be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *declaring_field_idx = resolved_field->GetDexFieldIndex(); 100be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 101be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 102be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline bool CompilerDriver::IsFieldVolatile(mirror::ArtField* field) { 103be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return field->IsVolatile(); 104be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 105be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 10666c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Markoinline MemberOffset CompilerDriver::GetFieldOffset(mirror::ArtField* field) { 10766c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko return field->GetOffset(); 10866c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko} 10966c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko 110be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline std::pair<bool, bool> CompilerDriver::IsFastInstanceField( 111be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::DexCache* dex_cache, mirror::Class* referrer_class, 112e50383288a75244255d3ecedcc79ffe9caf774cbNicolas Geoffray mirror::ArtField* resolved_field, uint16_t field_idx) { 113be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko DCHECK(!resolved_field->IsStatic()); 114be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::Class* fields_class = resolved_field->GetDeclaringClass(); 115be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko bool fast_get = referrer_class != nullptr && 116be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko referrer_class->CanAccessResolvedField(fields_class, resolved_field, 117be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko dex_cache, field_idx); 118be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko bool fast_put = fast_get && (!resolved_field->IsFinal() || fields_class == referrer_class); 119be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return std::make_pair(fast_get, fast_put); 120be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 121be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 122be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline std::pair<bool, bool> CompilerDriver::IsFastStaticField( 123be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::DexCache* dex_cache, mirror::Class* referrer_class, 12466c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko mirror::ArtField* resolved_field, uint16_t field_idx, uint32_t* storage_index) { 125be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko DCHECK(resolved_field->IsStatic()); 126be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (LIKELY(referrer_class != nullptr)) { 127be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::Class* fields_class = resolved_field->GetDeclaringClass(); 128be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (fields_class == referrer_class) { 129be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *storage_index = fields_class->GetDexTypeIndex(); 130be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return std::make_pair(true, true); 131be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 132be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (referrer_class->CanAccessResolvedField(fields_class, resolved_field, 133be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko dex_cache, field_idx)) { 134be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // We have the resolved field, we must make it into a index for the referrer 135be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // in its static storage (which may fail if it doesn't have a slot for it) 136be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // TODO: for images we can elide the static storage base null check 137be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // if we know there's a non-null entry in the image 138be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexFile* dex_file = dex_cache->GetDexFile(); 139be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko uint32_t storage_idx = DexFile::kDexNoIndex; 140be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (LIKELY(fields_class->GetDexCache() == dex_cache)) { 141be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // common case where the dex cache of both the referrer and the field are the same, 142be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // no need to search the dex file 143be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko storage_idx = fields_class->GetDexTypeIndex(); 144be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } else { 145be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Search dex file for localized ssb index, may fail if field's class is a parent 146be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // of the class mentioned in the dex file and there is no dex cache entry. 14708f1f50d6c2e8f247b8f5f19711d75a792851c7aIan Rogers std::string temp; 148be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexFile::StringId* string_id = 14908f1f50d6c2e8f247b8f5f19711d75a792851c7aIan Rogers dex_file->FindStringId(resolved_field->GetDeclaringClass()->GetDescriptor(&temp)); 150be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (string_id != nullptr) { 151be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexFile::TypeId* type_id = 152be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko dex_file->FindTypeId(dex_file->GetIndexForStringId(*string_id)); 153be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (type_id != nullptr) { 154be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // medium path, needs check of static storage base being initialized 155be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko storage_idx = dex_file->GetIndexForTypeId(*type_id); 156be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 157be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 158be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 159be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (storage_idx != DexFile::kDexNoIndex) { 160be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *storage_index = storage_idx; 161be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return std::make_pair(true, !resolved_field->IsFinal()); 162be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 163be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 164be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 165be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Conservative defaults. 166be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *storage_index = DexFile::kDexNoIndex; 167be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return std::make_pair(false, false); 168be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 169be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 17066c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Markoinline bool CompilerDriver::IsStaticFieldInReferrerClass(mirror::Class* referrer_class, 17166c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko mirror::ArtField* resolved_field) { 17266c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko DCHECK(resolved_field->IsStatic()); 17366c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko mirror::Class* fields_class = resolved_field->GetDeclaringClass(); 17466c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko return referrer_class == fields_class; 17566c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko} 17666c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko 17766c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Markoinline bool CompilerDriver::IsStaticFieldsClassInitialized(mirror::Class* referrer_class, 17866c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko mirror::ArtField* resolved_field) { 17966c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko DCHECK(resolved_field->IsStatic()); 18066c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko mirror::Class* fields_class = resolved_field->GetDeclaringClass(); 18166c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko return fields_class == referrer_class || fields_class->IsInitialized(); 18266c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko} 18366c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko 184f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Markoinline mirror::ArtMethod* CompilerDriver::ResolveMethod( 1850cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 1860cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 187e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier uint32_t method_idx, InvokeType invoke_type, bool check_incompatible_class_change) { 1880cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile()); 1890cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier DCHECK_EQ(class_loader.Get(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 190f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::ArtMethod* resolved_method = mUnit->GetClassLinker()->ResolveMethod( 1910cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier *mUnit->GetDexFile(), method_idx, dex_cache, class_loader, NullHandle<mirror::ArtMethod>(), 1920cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier invoke_type); 193f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko DCHECK_EQ(resolved_method == nullptr, soa.Self()->IsExceptionPending()); 194f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(resolved_method == nullptr)) { 195f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Clean up any exception left by type resolution. 196f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko soa.Self()->ClearException(); 197f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return nullptr; 198f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 199e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier if (check_incompatible_class_change && 200e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier UNLIKELY(resolved_method->CheckIncompatibleClassChange(invoke_type))) { 201f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Silently return nullptr on incompatible class change. 202f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return nullptr; 203f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 204f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return resolved_method; 205f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko} 206f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 207f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Markoinline void CompilerDriver::GetResolvedMethodDexFileLocation( 208f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::ArtMethod* resolved_method, const DexFile** declaring_dex_file, 209f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko uint16_t* declaring_class_idx, uint16_t* declaring_method_idx) { 210f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::Class* declaring_class = resolved_method->GetDeclaringClass(); 211f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko *declaring_dex_file = declaring_class->GetDexCache()->GetDexFile(); 212f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko *declaring_class_idx = declaring_class->GetDexTypeIndex(); 213f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko *declaring_method_idx = resolved_method->GetDexMethodIndex(); 214f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko} 215f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 216f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Markoinline uint16_t CompilerDriver::GetResolvedMethodVTableIndex( 217f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::ArtMethod* resolved_method, InvokeType type) { 218f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (type == kVirtual || type == kSuper) { 219f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return resolved_method->GetMethodIndex(); 220f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } else if (type == kInterface) { 221f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return resolved_method->GetDexMethodIndex(); 222f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } else { 223f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return DexFile::kDexNoIndex16; 224f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 225f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko} 226f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 227f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Markoinline int CompilerDriver::IsFastInvoke( 2280cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 2290cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 230f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::Class* referrer_class, mirror::ArtMethod* resolved_method, InvokeType* invoke_type, 231f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko MethodReference* target_method, const MethodReference* devirt_target, 232f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko uintptr_t* direct_code, uintptr_t* direct_method) { 233f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Don't try to fast-path if we don't understand the caller's class. 234f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(referrer_class == nullptr)) { 235f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return 0; 236f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 237f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::Class* methods_class = resolved_method->GetDeclaringClass(); 238f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(!referrer_class->CanAccessResolvedMethod(methods_class, resolved_method, 239eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier dex_cache.Get(), 240f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko target_method->dex_method_index))) { 241f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return 0; 242f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 243f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Sharpen a virtual call into a direct call when the target is known not to have been 244f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // overridden (ie is final). 245e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier const bool same_dex_file = target_method->dex_file == mUnit->GetDexFile(); 246e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier bool can_sharpen_virtual_based_on_type = same_dex_file && 247f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko (*invoke_type == kVirtual) && (resolved_method->IsFinal() || methods_class->IsFinal()); 248f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // For invoke-super, ensure the vtable index will be correct to dispatch in the vtable of 249f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // the super class. 250e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier bool can_sharpen_super_based_on_type = same_dex_file && (*invoke_type == kSuper) && 251f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko (referrer_class != methods_class) && referrer_class->IsSubClass(methods_class) && 2522cdbad7c62f126581ec5177104de961c4d71adaaMingyao Yang resolved_method->GetMethodIndex() < methods_class->GetVTableLength() && 253920506d4509fef2486a099c005ec134a5d22ec11Vladimir Marko (methods_class->GetVTableEntry(resolved_method->GetMethodIndex()) == resolved_method) && 254920506d4509fef2486a099c005ec134a5d22ec11Vladimir Marko !resolved_method->IsAbstract(); 255f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 256f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (can_sharpen_virtual_based_on_type || can_sharpen_super_based_on_type) { 257f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Sharpen a virtual call into a direct call. The method_idx is into referrer's 258f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // dex cache, check that this resolved method is where we expect it. 259e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier CHECK_EQ(target_method->dex_file, mUnit->GetDexFile()); 260e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier DCHECK_EQ(dex_cache.Get(), mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); 261e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier CHECK_EQ(referrer_class->GetDexCache()->GetResolvedMethod(target_method->dex_method_index), 262e5f13e57ff8fa36342beb33830b3ec5942a61ccaMathieu Chartier resolved_method) << PrettyMethod(resolved_method); 263f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko int stats_flags = kFlagMethodResolved; 264d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin GetCodeAndMethodForDirectCall(/*out*/invoke_type, 265d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin kDirect, // Sharp type 266d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin false, // The dex cache is guaranteed to be available 267d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin referrer_class, resolved_method, 268d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/&stats_flags, 269d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin target_method, 270d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/direct_code, 271d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/direct_method); 272f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko DCHECK_NE(*invoke_type, kSuper) << PrettyMethod(resolved_method); 273f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (*invoke_type == kDirect) { 274f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko stats_flags |= kFlagsMethodResolvedVirtualMadeDirect; 275f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 276f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return stats_flags; 277f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 278f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 279f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if ((*invoke_type == kVirtual || *invoke_type == kInterface) && devirt_target != nullptr) { 280f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Post-verification callback recorded a more precise invoke target based on its type info. 281f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::ArtMethod* called_method; 282f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko ClassLinker* class_linker = mUnit->GetClassLinker(); 283f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (LIKELY(devirt_target->dex_file == mUnit->GetDexFile())) { 284f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko called_method = class_linker->ResolveMethod(*devirt_target->dex_file, 2850cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier devirt_target->dex_method_index, dex_cache, 2860cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier class_loader, NullHandle<mirror::ArtMethod>(), 2870cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier kVirtual); 288f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } else { 289eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier StackHandleScope<1> hs(soa.Self()); 290eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::DexCache> target_dex_cache( 291eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier hs.NewHandle(class_linker->FindDexCache(*devirt_target->dex_file))); 292f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko called_method = class_linker->ResolveMethod(*devirt_target->dex_file, 293f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko devirt_target->dex_method_index, 2940cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier target_dex_cache, class_loader, 2950cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier NullHandle<mirror::ArtMethod>(), kVirtual); 296f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 297f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko CHECK(called_method != NULL); 298f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko CHECK(!called_method->IsAbstract()); 299f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko int stats_flags = kFlagMethodResolved; 300d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin GetCodeAndMethodForDirectCall(/*out*/invoke_type, 301d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin kDirect, // Sharp type 302d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin true, // The dex cache may not be available 303d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin referrer_class, called_method, 304d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/&stats_flags, 305d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin target_method, 306d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/direct_code, 307d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/direct_method); 308f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko DCHECK_NE(*invoke_type, kSuper); 309f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (*invoke_type == kDirect) { 310f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko stats_flags |= kFlagsMethodResolvedPreciseTypeDevirtualization; 311f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 312f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return stats_flags; 313f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 314f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 315f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(*invoke_type == kSuper)) { 316f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Unsharpened super calls are suspicious so go slow-path. 317f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return 0; 318f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 319f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 320f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Sharpening failed so generate a regular resolved method dispatch. 321f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko int stats_flags = kFlagMethodResolved; 322d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin GetCodeAndMethodForDirectCall(/*out*/invoke_type, 323d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin *invoke_type, // Sharp type 324d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin false, // The dex cache is guaranteed to be available 325d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin referrer_class, resolved_method, 326d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/&stats_flags, 327d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin target_method, 328d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/direct_code, 329d6dee676acdd1ab0aa4e5ba6834ee7c40a6dd8abIgor Murashkin /*out*/direct_method); 330f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return stats_flags; 331f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko} 332f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 33366c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Markoinline bool CompilerDriver::IsMethodsClassInitialized(mirror::Class* referrer_class, 33466c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko mirror::ArtMethod* resolved_method) { 3359820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko if (!resolved_method->IsStatic()) { 33666c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko return true; 3379820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko } 3389820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko mirror::Class* methods_class = resolved_method->GetDeclaringClass(); 33966c6d7bdfdd535e6ecf4461bba3804f1a7794fcdVladimir Marko return methods_class == referrer_class || methods_class->IsInitialized(); 3409820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko} 3419820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko 342be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} // namespace art 343be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 344be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#endif // ART_COMPILER_DRIVER_COMPILER_DRIVER_INL_H_ 345