compiler_driver-inl.h revision 0cd81352a7c06e381951cea1b104fd73516f4341
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" 21be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "dex/compiler_ir.h" 22be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "mirror/art_field.h" 23be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "mirror/art_field-inl.h" 24f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko#include "mirror/art_method.h" 25f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko#include "mirror/art_method-inl.h" 26be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "mirror/class_loader.h" 27be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "mirror/dex_cache.h" 28f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko#include "mirror/dex_cache-inl.h" 29be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "mirror/art_field-inl.h" 30be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#include "scoped_thread_state_change.h" 31eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier#include "handle_scope-inl.h" 32be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 33be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markonamespace art { 34be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 35be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline mirror::DexCache* CompilerDriver::GetDexCache(const DexCompilationUnit* mUnit) { 36be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile()); 37be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 38be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 39be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline mirror::ClassLoader* CompilerDriver::GetClassLoader(ScopedObjectAccess& soa, 40be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexCompilationUnit* mUnit) { 41be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader()); 42be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 43be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 44be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline mirror::Class* CompilerDriver::ResolveCompilingMethodsClass( 450cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 460cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit) { 47eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile()); 48eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DCHECK_EQ(class_loader.Get(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 49be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexFile::MethodId& referrer_method_id = 50be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mUnit->GetDexFile()->GetMethodId(mUnit->GetDexMethodIndex()); 51be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::Class* referrer_class = mUnit->GetClassLinker()->ResolveType( 52be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *mUnit->GetDexFile(), referrer_method_id.class_idx_, dex_cache, class_loader); 53be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko DCHECK_EQ(referrer_class == nullptr, soa.Self()->IsExceptionPending()); 54be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (UNLIKELY(referrer_class == nullptr)) { 55be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Clean up any exception left by type resolution. 56be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko soa.Self()->ClearException(); 57be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 58be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return referrer_class; 59be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 60be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 61be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline mirror::ArtField* CompilerDriver::ResolveField( 620cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 630cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 64be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko uint32_t field_idx, bool is_static) { 65eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile()); 66eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DCHECK_EQ(class_loader.Get(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 67be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::ArtField* resolved_field = mUnit->GetClassLinker()->ResolveField( 68be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *mUnit->GetDexFile(), field_idx, dex_cache, class_loader, is_static); 69be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko DCHECK_EQ(resolved_field == nullptr, soa.Self()->IsExceptionPending()); 70be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (UNLIKELY(resolved_field == nullptr)) { 71be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Clean up any exception left by type resolution. 72be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko soa.Self()->ClearException(); 73be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return nullptr; 74be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 75be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (UNLIKELY(resolved_field->IsStatic() != is_static)) { 76be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // ClassLinker can return a field of the wrong kind directly from the DexCache. 77be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Silently return nullptr on such incompatible class change. 78be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return nullptr; 79be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 80be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return resolved_field; 81be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 82be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 83be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline void CompilerDriver::GetResolvedFieldDexFileLocation( 84be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::ArtField* resolved_field, const DexFile** declaring_dex_file, 85be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko uint16_t* declaring_class_idx, uint16_t* declaring_field_idx) { 86be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::Class* declaring_class = resolved_field->GetDeclaringClass(); 87be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *declaring_dex_file = declaring_class->GetDexCache()->GetDexFile(); 88be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *declaring_class_idx = declaring_class->GetDexTypeIndex(); 89be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *declaring_field_idx = resolved_field->GetDexFieldIndex(); 90be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 91be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 92be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline bool CompilerDriver::IsFieldVolatile(mirror::ArtField* field) { 93be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return field->IsVolatile(); 94be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 95be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 96be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline std::pair<bool, bool> CompilerDriver::IsFastInstanceField( 97be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::DexCache* dex_cache, mirror::Class* referrer_class, 98be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::ArtField* resolved_field, uint16_t field_idx, MemberOffset* field_offset) { 99be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko DCHECK(!resolved_field->IsStatic()); 100be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::Class* fields_class = resolved_field->GetDeclaringClass(); 101be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko bool fast_get = referrer_class != nullptr && 102be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko referrer_class->CanAccessResolvedField(fields_class, resolved_field, 103be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko dex_cache, field_idx); 104be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko bool fast_put = fast_get && (!resolved_field->IsFinal() || fields_class == referrer_class); 105be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *field_offset = fast_get ? resolved_field->GetOffset() : MemberOffset(0u); 106be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return std::make_pair(fast_get, fast_put); 107be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 108be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 109be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Markoinline std::pair<bool, bool> CompilerDriver::IsFastStaticField( 110be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::DexCache* dex_cache, mirror::Class* referrer_class, 111be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::ArtField* resolved_field, uint16_t field_idx, MemberOffset* field_offset, 112be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko uint32_t* storage_index, bool* is_referrers_class, bool* is_initialized) { 113be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko DCHECK(resolved_field->IsStatic()); 114be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (LIKELY(referrer_class != nullptr)) { 115be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko mirror::Class* fields_class = resolved_field->GetDeclaringClass(); 116be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (fields_class == referrer_class) { 117be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *field_offset = resolved_field->GetOffset(); 118be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *storage_index = fields_class->GetDexTypeIndex(); 119be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *is_referrers_class = true; // implies no worrying about class initialization 120be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *is_initialized = true; 121be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return std::make_pair(true, true); 122be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 123be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (referrer_class->CanAccessResolvedField(fields_class, resolved_field, 124be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko dex_cache, field_idx)) { 125be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // We have the resolved field, we must make it into a index for the referrer 126be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // in its static storage (which may fail if it doesn't have a slot for it) 127be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // TODO: for images we can elide the static storage base null check 128be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // if we know there's a non-null entry in the image 129be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexFile* dex_file = dex_cache->GetDexFile(); 130be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko uint32_t storage_idx = DexFile::kDexNoIndex; 131be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (LIKELY(fields_class->GetDexCache() == dex_cache)) { 132be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // common case where the dex cache of both the referrer and the field are the same, 133be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // no need to search the dex file 134be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko storage_idx = fields_class->GetDexTypeIndex(); 135be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } else { 136be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Search dex file for localized ssb index, may fail if field's class is a parent 137be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // of the class mentioned in the dex file and there is no dex cache entry. 138be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexFile::StringId* string_id = 139be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko dex_file->FindStringId(FieldHelper(resolved_field).GetDeclaringClassDescriptor()); 140be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (string_id != nullptr) { 141be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko const DexFile::TypeId* type_id = 142be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko dex_file->FindTypeId(dex_file->GetIndexForStringId(*string_id)); 143be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (type_id != nullptr) { 144be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // medium path, needs check of static storage base being initialized 145be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko storage_idx = dex_file->GetIndexForTypeId(*type_id); 146be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 147be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 148be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 149be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko if (storage_idx != DexFile::kDexNoIndex) { 150be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *field_offset = resolved_field->GetOffset(); 151be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *storage_index = storage_idx; 152be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *is_referrers_class = false; 153be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *is_initialized = fields_class->IsInitialized() && 154be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko CanAssumeTypeIsPresentInDexCache(*dex_file, storage_idx); 155be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return std::make_pair(true, !resolved_field->IsFinal()); 156be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 157be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 158be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko } 159be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko // Conservative defaults. 160be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *field_offset = MemberOffset(0u); 161be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *storage_index = DexFile::kDexNoIndex; 162be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *is_referrers_class = false; 163be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko *is_initialized = false; 164be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko return std::make_pair(false, false); 165be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} 166be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 167f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Markoinline mirror::ArtMethod* CompilerDriver::ResolveMethod( 1680cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 1690cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 170f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko uint32_t method_idx, InvokeType invoke_type) { 1710cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile()); 1720cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier DCHECK_EQ(class_loader.Get(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 173f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::ArtMethod* resolved_method = mUnit->GetClassLinker()->ResolveMethod( 1740cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier *mUnit->GetDexFile(), method_idx, dex_cache, class_loader, NullHandle<mirror::ArtMethod>(), 1750cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier invoke_type); 176f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko DCHECK_EQ(resolved_method == nullptr, soa.Self()->IsExceptionPending()); 177f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(resolved_method == nullptr)) { 178f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Clean up any exception left by type resolution. 179f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko soa.Self()->ClearException(); 180f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return nullptr; 181f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 182f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(resolved_method->CheckIncompatibleClassChange(invoke_type))) { 183f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Silently return nullptr on incompatible class change. 184f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return nullptr; 185f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 186f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return resolved_method; 187f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko} 188f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 189f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Markoinline void CompilerDriver::GetResolvedMethodDexFileLocation( 190f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::ArtMethod* resolved_method, const DexFile** declaring_dex_file, 191f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko uint16_t* declaring_class_idx, uint16_t* declaring_method_idx) { 192f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::Class* declaring_class = resolved_method->GetDeclaringClass(); 193f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko *declaring_dex_file = declaring_class->GetDexCache()->GetDexFile(); 194f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko *declaring_class_idx = declaring_class->GetDexTypeIndex(); 195f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko *declaring_method_idx = resolved_method->GetDexMethodIndex(); 196f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko} 197f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 198f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Markoinline uint16_t CompilerDriver::GetResolvedMethodVTableIndex( 199f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::ArtMethod* resolved_method, InvokeType type) { 200f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (type == kVirtual || type == kSuper) { 201f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return resolved_method->GetMethodIndex(); 202f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } else if (type == kInterface) { 203f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return resolved_method->GetDexMethodIndex(); 204f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } else { 205f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return DexFile::kDexNoIndex16; 206f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 207f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko} 208f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 209f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Markoinline int CompilerDriver::IsFastInvoke( 2100cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 2110cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 212f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::Class* referrer_class, mirror::ArtMethod* resolved_method, InvokeType* invoke_type, 213f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko MethodReference* target_method, const MethodReference* devirt_target, 214f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko uintptr_t* direct_code, uintptr_t* direct_method) { 215f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Don't try to fast-path if we don't understand the caller's class. 216f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(referrer_class == nullptr)) { 217f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return 0; 218f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 219f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::Class* methods_class = resolved_method->GetDeclaringClass(); 220f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(!referrer_class->CanAccessResolvedMethod(methods_class, resolved_method, 221eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier dex_cache.Get(), 222f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko target_method->dex_method_index))) { 223f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return 0; 224f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 225f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 226f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Sharpen a virtual call into a direct call when the target is known not to have been 227f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // overridden (ie is final). 228f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko bool can_sharpen_virtual_based_on_type = 229f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko (*invoke_type == kVirtual) && (resolved_method->IsFinal() || methods_class->IsFinal()); 230f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // For invoke-super, ensure the vtable index will be correct to dispatch in the vtable of 231f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // the super class. 232f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko bool can_sharpen_super_based_on_type = (*invoke_type == kSuper) && 233f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko (referrer_class != methods_class) && referrer_class->IsSubClass(methods_class) && 234f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko resolved_method->GetMethodIndex() < methods_class->GetVTable()->GetLength() && 235f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko (methods_class->GetVTable()->Get(resolved_method->GetMethodIndex()) == resolved_method); 236f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 237f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (can_sharpen_virtual_based_on_type || can_sharpen_super_based_on_type) { 238f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Sharpen a virtual call into a direct call. The method_idx is into referrer's 239f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // dex cache, check that this resolved method is where we expect it. 240f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko CHECK(target_method->dex_file == mUnit->GetDexFile()); 241eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier DCHECK(dex_cache.Get() == mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); 242f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko CHECK(referrer_class->GetDexCache()->GetResolvedMethod(target_method->dex_method_index) == 243f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko resolved_method) << PrettyMethod(resolved_method); 244f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko int stats_flags = kFlagMethodResolved; 245f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko GetCodeAndMethodForDirectCall(invoke_type, kDirect, false, referrer_class, resolved_method, 246f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko &stats_flags, target_method, direct_code, direct_method); 247f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko DCHECK_NE(*invoke_type, kSuper) << PrettyMethod(resolved_method); 248f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (*invoke_type == kDirect) { 249f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko stats_flags |= kFlagsMethodResolvedVirtualMadeDirect; 250f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 251f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return stats_flags; 252f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 253f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 254f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if ((*invoke_type == kVirtual || *invoke_type == kInterface) && devirt_target != nullptr) { 255f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Post-verification callback recorded a more precise invoke target based on its type info. 256f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko mirror::ArtMethod* called_method; 257f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko ClassLinker* class_linker = mUnit->GetClassLinker(); 258f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (LIKELY(devirt_target->dex_file == mUnit->GetDexFile())) { 259f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko called_method = class_linker->ResolveMethod(*devirt_target->dex_file, 2600cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier devirt_target->dex_method_index, dex_cache, 2610cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier class_loader, NullHandle<mirror::ArtMethod>(), 2620cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier kVirtual); 263f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } else { 264eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier StackHandleScope<1> hs(soa.Self()); 265eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier Handle<mirror::DexCache> target_dex_cache( 266eb8167a4f4d27fce0530f6724ab8032610cd146bMathieu Chartier hs.NewHandle(class_linker->FindDexCache(*devirt_target->dex_file))); 267f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko called_method = class_linker->ResolveMethod(*devirt_target->dex_file, 268f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko devirt_target->dex_method_index, 2690cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier target_dex_cache, class_loader, 2700cd81352a7c06e381951cea1b104fd73516f4341Mathieu Chartier NullHandle<mirror::ArtMethod>(), kVirtual); 271f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 272f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko CHECK(called_method != NULL); 273f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko CHECK(!called_method->IsAbstract()); 274f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko int stats_flags = kFlagMethodResolved; 275f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko GetCodeAndMethodForDirectCall(invoke_type, kDirect, true, referrer_class, called_method, 276f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko &stats_flags, target_method, direct_code, direct_method); 277f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko DCHECK_NE(*invoke_type, kSuper); 278f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (*invoke_type == kDirect) { 279f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko stats_flags |= kFlagsMethodResolvedPreciseTypeDevirtualization; 280f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 281f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return stats_flags; 282f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 283f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 284f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko if (UNLIKELY(*invoke_type == kSuper)) { 285f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Unsharpened super calls are suspicious so go slow-path. 286f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return 0; 287f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko } 288f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 289f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko // Sharpening failed so generate a regular resolved method dispatch. 290f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko int stats_flags = kFlagMethodResolved; 291f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko GetCodeAndMethodForDirectCall(invoke_type, *invoke_type, false, referrer_class, resolved_method, 292f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko &stats_flags, target_method, direct_code, direct_method); 293f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko return stats_flags; 294f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko} 295f096aad9203d7c50b2f9cbe1c1215a50c265a059Vladimir Marko 2969820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Markoinline bool CompilerDriver::NeedsClassInitialization(mirror::Class* referrer_class, 2979820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko mirror::ArtMethod* resolved_method) { 2989820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko if (!resolved_method->IsStatic()) { 2999820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko return false; 3009820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko } 3019820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko mirror::Class* methods_class = resolved_method->GetDeclaringClass(); 3029820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko // NOTE: Unlike in IsFastStaticField(), we don't check CanAssumeTypeIsPresentInDexCache() here. 3039820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko return methods_class != referrer_class && !methods_class->IsInitialized(); 3049820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko} 3059820b7c1dc70e75ad405b9e6e63578fa9fe94e94Vladimir Marko 306be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko} // namespace art 307be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko 308be0e546730e532ef0987cd4bde2c6f5a1b14dd2aVladimir Marko#endif // ART_COMPILER_DRIVER_COMPILER_DRIVER_INL_H_ 309