| // Copyright 2006-2009 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "v8.h" |
| |
| #include "api.h" |
| #include "arguments.h" |
| #include "ic-inl.h" |
| #include "stub-cache.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // ----------------------------------------------------------------------- |
| // StubCache implementation. |
| |
| |
| StubCache::Entry StubCache::primary_[StubCache::kPrimaryTableSize]; |
| StubCache::Entry StubCache::secondary_[StubCache::kSecondaryTableSize]; |
| |
| void StubCache::Initialize(bool create_heap_objects) { |
| ASSERT(IsPowerOf2(kPrimaryTableSize)); |
| ASSERT(IsPowerOf2(kSecondaryTableSize)); |
| if (create_heap_objects) { |
| HandleScope scope; |
| Clear(); |
| } |
| } |
| |
| |
| Code* StubCache::Set(String* name, Map* map, Code* code) { |
| // Get the flags from the code. |
| Code::Flags flags = Code::RemoveTypeFromFlags(code->flags()); |
| |
| // Validate that the name does not move on scavenge, and that we |
| // can use identity checks instead of string equality checks. |
| ASSERT(!Heap::InNewSpace(name)); |
| ASSERT(name->IsSymbol()); |
| |
| // The state bits are not important to the hash function because |
| // the stub cache only contains monomorphic stubs. Make sure that |
| // the bits are the least significant so they will be the ones |
| // masked out. |
| ASSERT(Code::ExtractICStateFromFlags(flags) == MONOMORPHIC); |
| ASSERT(Code::kFlagsICStateShift == 0); |
| |
| // Make sure that the code type is not included in the hash. |
| ASSERT(Code::ExtractTypeFromFlags(flags) == 0); |
| |
| // Compute the primary entry. |
| int primary_offset = PrimaryOffset(name, flags, map); |
| Entry* primary = entry(primary_, primary_offset); |
| Code* hit = primary->value; |
| |
| // If the primary entry has useful data in it, we retire it to the |
| // secondary cache before overwriting it. |
| if (hit != Builtins::builtin(Builtins::Illegal)) { |
| Code::Flags primary_flags = Code::RemoveTypeFromFlags(hit->flags()); |
| int secondary_offset = |
| SecondaryOffset(primary->key, primary_flags, primary_offset); |
| Entry* secondary = entry(secondary_, secondary_offset); |
| *secondary = *primary; |
| } |
| |
| // Update primary cache. |
| primary->key = name; |
| primary->value = code; |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeLoadNonexistent(String* name, |
| JSObject* receiver) { |
| ASSERT(receiver->IsGlobalObject() || receiver->HasFastProperties()); |
| // If no global objects are present in the prototype chain, the load |
| // nonexistent IC stub can be shared for all names for a given map |
| // and we use the empty string for the map cache in that case. If |
| // there are global objects involved, we need to check global |
| // property cells in the stub and therefore the stub will be |
| // specific to the name. |
| String* cache_name = Heap::empty_string(); |
| if (receiver->IsGlobalObject()) cache_name = name; |
| JSObject* last = receiver; |
| while (last->GetPrototype() != Heap::null_value()) { |
| last = JSObject::cast(last->GetPrototype()); |
| if (last->IsGlobalObject()) cache_name = name; |
| } |
| // Compile the stub that is either shared for all names or |
| // name specific if there are global objects involved. |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::LOAD_IC, NONEXISTENT); |
| Object* code = receiver->map()->FindInCodeCache(cache_name, flags); |
| if (code->IsUndefined()) { |
| LoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadNonexistent(cache_name, receiver, last); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::LOAD_IC_TAG, Code::cast(code), cache_name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(cache_name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeLoadField(String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| int field_index) { |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, FIELD); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| LoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadField(receiver, holder, field_index, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeLoadCallback(String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| AccessorInfo* callback) { |
| ASSERT(v8::ToCData<Address>(callback->getter()) != 0); |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, CALLBACKS); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| LoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadCallback(name, receiver, holder, callback); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeLoadConstant(String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| Object* value) { |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::LOAD_IC, CONSTANT_FUNCTION); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| LoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadConstant(receiver, holder, value, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeLoadInterceptor(String* name, |
| JSObject* receiver, |
| JSObject* holder) { |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, INTERCEPTOR); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| LoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadInterceptor(receiver, holder, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeLoadNormal() { |
| return Builtins::builtin(Builtins::LoadIC_Normal); |
| } |
| |
| |
| MaybeObject* StubCache::ComputeLoadGlobal(String* name, |
| JSObject* receiver, |
| GlobalObject* holder, |
| JSGlobalPropertyCell* cell, |
| bool is_dont_delete) { |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, NORMAL); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| LoadStubCompiler compiler; |
| { MaybeObject* maybe_code = compiler.CompileLoadGlobal(receiver, |
| holder, |
| cell, |
| name, |
| is_dont_delete); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeKeyedLoadField(String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| int field_index) { |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, FIELD); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| KeyedLoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadField(name, receiver, holder, field_index); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeKeyedLoadConstant(String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| Object* value) { |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CONSTANT_FUNCTION); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| KeyedLoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadConstant(name, receiver, holder, value); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeKeyedLoadInterceptor(String* name, |
| JSObject* receiver, |
| JSObject* holder) { |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, INTERCEPTOR); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| KeyedLoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadInterceptor(receiver, holder, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeKeyedLoadCallback(String* name, |
| JSObject* receiver, |
| JSObject* holder, |
| AccessorInfo* callback) { |
| ASSERT(IC::GetCodeCacheForObject(receiver, holder) == OWN_MAP); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CALLBACKS); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| KeyedLoadStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileLoadCallback(name, receiver, holder, callback); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| |
| MaybeObject* StubCache::ComputeKeyedLoadArrayLength(String* name, |
| JSArray* receiver) { |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CALLBACKS); |
| ASSERT(receiver->IsJSObject()); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| KeyedLoadStubCompiler compiler; |
| { MaybeObject* maybe_code = compiler.CompileLoadArrayLength(name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeKeyedLoadStringLength(String* name, |
| String* receiver) { |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CALLBACKS); |
| Map* map = receiver->map(); |
| Object* code = map->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| KeyedLoadStubCompiler compiler; |
| { MaybeObject* maybe_code = compiler.CompileLoadStringLength(name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = map->UpdateCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeKeyedLoadFunctionPrototype( |
| String* name, |
| JSFunction* receiver) { |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CALLBACKS); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| KeyedLoadStubCompiler compiler; |
| { MaybeObject* maybe_code = compiler.CompileLoadFunctionPrototype(name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeStoreField(String* name, |
| JSObject* receiver, |
| int field_index, |
| Map* transition) { |
| PropertyType type = (transition == NULL) ? FIELD : MAP_TRANSITION; |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::STORE_IC, type); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| StoreStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileStoreField(receiver, field_index, transition, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::STORE_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeStoreNormal() { |
| return Builtins::builtin(Builtins::StoreIC_Normal); |
| } |
| |
| |
| MaybeObject* StubCache::ComputeStoreGlobal(String* name, |
| GlobalObject* receiver, |
| JSGlobalPropertyCell* cell) { |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::STORE_IC, NORMAL); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| StoreStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileStoreGlobal(receiver, cell, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::STORE_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeStoreCallback(String* name, |
| JSObject* receiver, |
| AccessorInfo* callback) { |
| ASSERT(v8::ToCData<Address>(callback->setter()) != 0); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::STORE_IC, CALLBACKS); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| StoreStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileStoreCallback(receiver, callback, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::STORE_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeStoreInterceptor(String* name, |
| JSObject* receiver) { |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::STORE_IC, INTERCEPTOR); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| StoreStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileStoreInterceptor(receiver, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent(Logger::STORE_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeKeyedStoreField(String* name, |
| JSObject* receiver, |
| int field_index, |
| Map* transition) { |
| PropertyType type = (transition == NULL) ? FIELD : MAP_TRANSITION; |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::KEYED_STORE_IC, type); |
| Object* code = receiver->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| KeyedStoreStubCompiler compiler; |
| { MaybeObject* maybe_code = |
| compiler.CompileStoreField(receiver, field_index, transition, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| PROFILE(CodeCreateEvent( |
| Logger::KEYED_STORE_IC_TAG, Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| receiver->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| #define CALL_LOGGER_TAG(kind, type) \ |
| (kind == Code::CALL_IC ? Logger::type : Logger::KEYED_##type) |
| |
| MaybeObject* StubCache::ComputeCallConstant(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind, |
| String* name, |
| Object* object, |
| JSObject* holder, |
| JSFunction* function) { |
| // Compute the check type and the map. |
| InlineCacheHolderFlag cache_holder = |
| IC::GetCodeCacheForObject(object, holder); |
| JSObject* map_holder = IC::GetCodeCacheHolder(object, cache_holder); |
| |
| // Compute check type based on receiver/holder. |
| StubCompiler::CheckType check = StubCompiler::RECEIVER_MAP_CHECK; |
| if (object->IsString()) { |
| check = StubCompiler::STRING_CHECK; |
| } else if (object->IsNumber()) { |
| check = StubCompiler::NUMBER_CHECK; |
| } else if (object->IsBoolean()) { |
| check = StubCompiler::BOOLEAN_CHECK; |
| } |
| |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(kind, |
| CONSTANT_FUNCTION, |
| cache_holder, |
| in_loop, |
| argc); |
| Object* code = map_holder->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| // If the function hasn't been compiled yet, we cannot do it now |
| // because it may cause GC. To avoid this issue, we return an |
| // internal error which will make sure we do not update any |
| // caches. |
| if (!function->is_compiled()) return Failure::InternalError(); |
| // Compile the stub - only create stubs for fully compiled functions. |
| CallStubCompiler compiler(argc, in_loop, kind, cache_holder); |
| { MaybeObject* maybe_code = |
| compiler.CompileCallConstant(object, holder, function, name, check); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| ASSERT_EQ(flags, Code::cast(code)->flags()); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_IC_TAG), |
| Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| map_holder->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallField(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind, |
| String* name, |
| Object* object, |
| JSObject* holder, |
| int index) { |
| // Compute the check type and the map. |
| InlineCacheHolderFlag cache_holder = |
| IC::GetCodeCacheForObject(object, holder); |
| JSObject* map_holder = IC::GetCodeCacheHolder(object, cache_holder); |
| |
| // TODO(1233596): We cannot do receiver map check for non-JS objects |
| // because they may be represented as immediates without a |
| // map. Instead, we check against the map in the holder. |
| if (object->IsNumber() || object->IsBoolean() || object->IsString()) { |
| object = holder; |
| } |
| |
| Code::Flags flags = Code::ComputeMonomorphicFlags(kind, |
| FIELD, |
| cache_holder, |
| in_loop, |
| argc); |
| Object* code = map_holder->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| CallStubCompiler compiler(argc, in_loop, kind, cache_holder); |
| { MaybeObject* maybe_code = |
| compiler.CompileCallField(JSObject::cast(object), |
| holder, |
| index, |
| name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| ASSERT_EQ(flags, Code::cast(code)->flags()); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_IC_TAG), |
| Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| map_holder->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallInterceptor(int argc, |
| Code::Kind kind, |
| String* name, |
| Object* object, |
| JSObject* holder) { |
| // Compute the check type and the map. |
| InlineCacheHolderFlag cache_holder = |
| IC::GetCodeCacheForObject(object, holder); |
| JSObject* map_holder = IC::GetCodeCacheHolder(object, cache_holder); |
| |
| // TODO(1233596): We cannot do receiver map check for non-JS objects |
| // because they may be represented as immediates without a |
| // map. Instead, we check against the map in the holder. |
| if (object->IsNumber() || object->IsBoolean() || object->IsString()) { |
| object = holder; |
| } |
| |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(kind, |
| INTERCEPTOR, |
| cache_holder, |
| NOT_IN_LOOP, |
| argc); |
| Object* code = map_holder->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| CallStubCompiler compiler(argc, NOT_IN_LOOP, kind, cache_holder); |
| { MaybeObject* maybe_code = |
| compiler.CompileCallInterceptor(JSObject::cast(object), holder, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| ASSERT_EQ(flags, Code::cast(code)->flags()); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_IC_TAG), |
| Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| map_holder->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallNormal(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind, |
| String* name, |
| JSObject* receiver) { |
| Object* code; |
| { MaybeObject* maybe_code = ComputeCallNormal(argc, in_loop, kind); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| return code; |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallGlobal(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind, |
| String* name, |
| JSObject* receiver, |
| GlobalObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function) { |
| InlineCacheHolderFlag cache_holder = |
| IC::GetCodeCacheForObject(receiver, holder); |
| JSObject* map_holder = IC::GetCodeCacheHolder(receiver, cache_holder); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(kind, |
| NORMAL, |
| cache_holder, |
| in_loop, |
| argc); |
| Object* code = map_holder->map()->FindInCodeCache(name, flags); |
| if (code->IsUndefined()) { |
| // If the function hasn't been compiled yet, we cannot do it now |
| // because it may cause GC. To avoid this issue, we return an |
| // internal error which will make sure we do not update any |
| // caches. |
| if (!function->is_compiled()) return Failure::InternalError(); |
| CallStubCompiler compiler(argc, in_loop, kind, cache_holder); |
| { MaybeObject* maybe_code = |
| compiler.CompileCallGlobal(receiver, holder, cell, function, name); |
| if (!maybe_code->ToObject(&code)) return maybe_code; |
| } |
| ASSERT_EQ(flags, Code::cast(code)->flags()); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_IC_TAG), |
| Code::cast(code), name)); |
| Object* result; |
| { MaybeObject* maybe_result = |
| map_holder->UpdateMapCodeCache(name, Code::cast(code)); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| } |
| return code; |
| } |
| |
| |
| static Object* GetProbeValue(Code::Flags flags) { |
| // Use raw_unchecked... so we don't get assert failures during GC. |
| NumberDictionary* dictionary = Heap::raw_unchecked_non_monomorphic_cache(); |
| int entry = dictionary->FindEntry(flags); |
| if (entry != -1) return dictionary->ValueAt(entry); |
| return Heap::raw_unchecked_undefined_value(); |
| } |
| |
| |
| MUST_USE_RESULT static MaybeObject* ProbeCache(Code::Flags flags) { |
| Object* probe = GetProbeValue(flags); |
| if (probe != Heap::undefined_value()) return probe; |
| // Seed the cache with an undefined value to make sure that any |
| // generated code object can always be inserted into the cache |
| // without causing allocation failures. |
| Object* result; |
| { MaybeObject* maybe_result = |
| Heap::non_monomorphic_cache()->AtNumberPut(flags, |
| Heap::undefined_value()); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Heap::public_set_non_monomorphic_cache(NumberDictionary::cast(result)); |
| return probe; |
| } |
| |
| |
| static MaybeObject* FillCache(MaybeObject* maybe_code) { |
| Object* code; |
| if (maybe_code->ToObject(&code)) { |
| if (code->IsCode()) { |
| int entry = |
| Heap::non_monomorphic_cache()->FindEntry( |
| Code::cast(code)->flags()); |
| // The entry must be present see comment in ProbeCache. |
| ASSERT(entry != -1); |
| ASSERT(Heap::non_monomorphic_cache()->ValueAt(entry) == |
| Heap::undefined_value()); |
| Heap::non_monomorphic_cache()->ValueAtPut(entry, code); |
| CHECK(GetProbeValue(Code::cast(code)->flags()) == code); |
| } |
| } |
| return maybe_code; |
| } |
| |
| |
| Code* StubCache::FindCallInitialize(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, in_loop, UNINITIALIZED, NORMAL, argc); |
| Object* result = ProbeCache(flags)->ToObjectUnchecked(); |
| ASSERT(!result->IsUndefined()); |
| // This might be called during the marking phase of the collector |
| // hence the unchecked cast. |
| return reinterpret_cast<Code*>(result); |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallInitialize(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, in_loop, UNINITIALIZED, NORMAL, argc); |
| Object* probe; |
| { MaybeObject* maybe_probe = ProbeCache(flags); |
| if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| } |
| if (!probe->IsUndefined()) return probe; |
| StubCompiler compiler; |
| return FillCache(compiler.CompileCallInitialize(flags)); |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallInitialize(int argc, InLoopFlag in_loop) { |
| if (in_loop == IN_LOOP) { |
| // Force the creation of the corresponding stub outside loops, |
| // because it may be used when clearing the ICs later - it is |
| // possible for a series of IC transitions to lose the in-loop |
| // information, and the IC clearing code can't generate a stub |
| // that it needs so we need to ensure it is generated already. |
| ComputeCallInitialize(argc, NOT_IN_LOOP); |
| } |
| CALL_HEAP_FUNCTION(ComputeCallInitialize(argc, in_loop, Code::CALL_IC), Code); |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedCallInitialize(int argc, |
| InLoopFlag in_loop) { |
| if (in_loop == IN_LOOP) { |
| // Force the creation of the corresponding stub outside loops, |
| // because it may be used when clearing the ICs later - it is |
| // possible for a series of IC transitions to lose the in-loop |
| // information, and the IC clearing code can't generate a stub |
| // that it needs so we need to ensure it is generated already. |
| ComputeKeyedCallInitialize(argc, NOT_IN_LOOP); |
| } |
| CALL_HEAP_FUNCTION( |
| ComputeCallInitialize(argc, in_loop, Code::KEYED_CALL_IC), Code); |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallPreMonomorphic(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, in_loop, PREMONOMORPHIC, NORMAL, argc); |
| Object* probe; |
| { MaybeObject* maybe_probe = ProbeCache(flags); |
| if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| } |
| if (!probe->IsUndefined()) return probe; |
| StubCompiler compiler; |
| return FillCache(compiler.CompileCallPreMonomorphic(flags)); |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallNormal(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, in_loop, MONOMORPHIC, NORMAL, argc); |
| Object* probe; |
| { MaybeObject* maybe_probe = ProbeCache(flags); |
| if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| } |
| if (!probe->IsUndefined()) return probe; |
| StubCompiler compiler; |
| return FillCache(compiler.CompileCallNormal(flags)); |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallMegamorphic(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, in_loop, MEGAMORPHIC, NORMAL, argc); |
| Object* probe; |
| { MaybeObject* maybe_probe = ProbeCache(flags); |
| if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| } |
| if (!probe->IsUndefined()) return probe; |
| StubCompiler compiler; |
| return FillCache(compiler.CompileCallMegamorphic(flags)); |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallMiss(int argc, Code::Kind kind) { |
| // MONOMORPHIC_PROTOTYPE_FAILURE state is used to make sure that miss stubs |
| // and monomorphic stubs are not mixed up together in the stub cache. |
| Code::Flags flags = Code::ComputeFlags( |
| kind, NOT_IN_LOOP, MONOMORPHIC_PROTOTYPE_FAILURE, NORMAL, argc); |
| Object* probe; |
| { MaybeObject* maybe_probe = ProbeCache(flags); |
| if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| } |
| if (!probe->IsUndefined()) return probe; |
| StubCompiler compiler; |
| return FillCache(compiler.CompileCallMiss(flags)); |
| } |
| |
| |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| MaybeObject* StubCache::ComputeCallDebugBreak(int argc, Code::Kind kind) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, NOT_IN_LOOP, DEBUG_BREAK, NORMAL, argc); |
| Object* probe; |
| { MaybeObject* maybe_probe = ProbeCache(flags); |
| if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| } |
| if (!probe->IsUndefined()) return probe; |
| StubCompiler compiler; |
| return FillCache(compiler.CompileCallDebugBreak(flags)); |
| } |
| |
| |
| MaybeObject* StubCache::ComputeCallDebugPrepareStepIn(int argc, |
| Code::Kind kind) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, |
| NOT_IN_LOOP, |
| DEBUG_PREPARE_STEP_IN, |
| NORMAL, |
| argc); |
| Object* probe; |
| { MaybeObject* maybe_probe = ProbeCache(flags); |
| if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| } |
| if (!probe->IsUndefined()) return probe; |
| StubCompiler compiler; |
| return FillCache(compiler.CompileCallDebugPrepareStepIn(flags)); |
| } |
| #endif |
| |
| |
| void StubCache::Clear() { |
| for (int i = 0; i < kPrimaryTableSize; i++) { |
| primary_[i].key = Heap::empty_string(); |
| primary_[i].value = Builtins::builtin(Builtins::Illegal); |
| } |
| for (int j = 0; j < kSecondaryTableSize; j++) { |
| secondary_[j].key = Heap::empty_string(); |
| secondary_[j].value = Builtins::builtin(Builtins::Illegal); |
| } |
| } |
| |
| |
| // ------------------------------------------------------------------------ |
| // StubCompiler implementation. |
| |
| |
| MaybeObject* LoadCallbackProperty(Arguments args) { |
| ASSERT(args[0]->IsJSObject()); |
| ASSERT(args[1]->IsJSObject()); |
| AccessorInfo* callback = AccessorInfo::cast(args[3]); |
| Address getter_address = v8::ToCData<Address>(callback->getter()); |
| v8::AccessorGetter fun = FUNCTION_CAST<v8::AccessorGetter>(getter_address); |
| ASSERT(fun != NULL); |
| v8::AccessorInfo info(&args[0]); |
| HandleScope scope; |
| v8::Handle<v8::Value> result; |
| { |
| // Leaving JavaScript. |
| VMState state(EXTERNAL); |
| #ifdef ENABLE_LOGGING_AND_PROFILING |
| state.set_external_callback(getter_address); |
| #endif |
| result = fun(v8::Utils::ToLocal(args.at<String>(4)), info); |
| } |
| RETURN_IF_SCHEDULED_EXCEPTION(); |
| if (result.IsEmpty()) return Heap::undefined_value(); |
| return *v8::Utils::OpenHandle(*result); |
| } |
| |
| |
| MaybeObject* StoreCallbackProperty(Arguments args) { |
| JSObject* recv = JSObject::cast(args[0]); |
| AccessorInfo* callback = AccessorInfo::cast(args[1]); |
| Address setter_address = v8::ToCData<Address>(callback->setter()); |
| v8::AccessorSetter fun = FUNCTION_CAST<v8::AccessorSetter>(setter_address); |
| ASSERT(fun != NULL); |
| Handle<String> name = args.at<String>(2); |
| Handle<Object> value = args.at<Object>(3); |
| HandleScope scope; |
| LOG(ApiNamedPropertyAccess("store", recv, *name)); |
| CustomArguments custom_args(callback->data(), recv, recv); |
| v8::AccessorInfo info(custom_args.end()); |
| { |
| // Leaving JavaScript. |
| VMState state(EXTERNAL); |
| #ifdef ENABLE_LOGGING_AND_PROFILING |
| state.set_external_callback(setter_address); |
| #endif |
| fun(v8::Utils::ToLocal(name), v8::Utils::ToLocal(value), info); |
| } |
| RETURN_IF_SCHEDULED_EXCEPTION(); |
| return *value; |
| } |
| |
| |
| static const int kAccessorInfoOffsetInInterceptorArgs = 2; |
| |
| |
| /** |
| * Attempts to load a property with an interceptor (which must be present), |
| * but doesn't search the prototype chain. |
| * |
| * Returns |Heap::no_interceptor_result_sentinel()| if interceptor doesn't |
| * provide any value for the given name. |
| */ |
| MaybeObject* LoadPropertyWithInterceptorOnly(Arguments args) { |
| Handle<String> name_handle = args.at<String>(0); |
| Handle<InterceptorInfo> interceptor_info = args.at<InterceptorInfo>(1); |
| ASSERT(kAccessorInfoOffsetInInterceptorArgs == 2); |
| ASSERT(args[2]->IsJSObject()); // Receiver. |
| ASSERT(args[3]->IsJSObject()); // Holder. |
| ASSERT(args.length() == 5); // Last arg is data object. |
| |
| Address getter_address = v8::ToCData<Address>(interceptor_info->getter()); |
| v8::NamedPropertyGetter getter = |
| FUNCTION_CAST<v8::NamedPropertyGetter>(getter_address); |
| ASSERT(getter != NULL); |
| |
| { |
| // Use the interceptor getter. |
| v8::AccessorInfo info(args.arguments() - |
| kAccessorInfoOffsetInInterceptorArgs); |
| HandleScope scope; |
| v8::Handle<v8::Value> r; |
| { |
| // Leaving JavaScript. |
| VMState state(EXTERNAL); |
| r = getter(v8::Utils::ToLocal(name_handle), info); |
| } |
| RETURN_IF_SCHEDULED_EXCEPTION(); |
| if (!r.IsEmpty()) { |
| return *v8::Utils::OpenHandle(*r); |
| } |
| } |
| |
| return Heap::no_interceptor_result_sentinel(); |
| } |
| |
| |
| static MaybeObject* ThrowReferenceError(String* name) { |
| // If the load is non-contextual, just return the undefined result. |
| // Note that both keyed and non-keyed loads may end up here, so we |
| // can't use either LoadIC or KeyedLoadIC constructors. |
| IC ic(IC::NO_EXTRA_FRAME); |
| ASSERT(ic.target()->is_load_stub() || ic.target()->is_keyed_load_stub()); |
| if (!ic.SlowIsContextual()) return Heap::undefined_value(); |
| |
| // Throw a reference error. |
| HandleScope scope; |
| Handle<String> name_handle(name); |
| Handle<Object> error = |
| Factory::NewReferenceError("not_defined", |
| HandleVector(&name_handle, 1)); |
| return Top::Throw(*error); |
| } |
| |
| |
| static MaybeObject* LoadWithInterceptor(Arguments* args, |
| PropertyAttributes* attrs) { |
| Handle<String> name_handle = args->at<String>(0); |
| Handle<InterceptorInfo> interceptor_info = args->at<InterceptorInfo>(1); |
| ASSERT(kAccessorInfoOffsetInInterceptorArgs == 2); |
| Handle<JSObject> receiver_handle = args->at<JSObject>(2); |
| Handle<JSObject> holder_handle = args->at<JSObject>(3); |
| ASSERT(args->length() == 5); // Last arg is data object. |
| |
| Address getter_address = v8::ToCData<Address>(interceptor_info->getter()); |
| v8::NamedPropertyGetter getter = |
| FUNCTION_CAST<v8::NamedPropertyGetter>(getter_address); |
| ASSERT(getter != NULL); |
| |
| { |
| // Use the interceptor getter. |
| v8::AccessorInfo info(args->arguments() - |
| kAccessorInfoOffsetInInterceptorArgs); |
| HandleScope scope; |
| v8::Handle<v8::Value> r; |
| { |
| // Leaving JavaScript. |
| VMState state(EXTERNAL); |
| r = getter(v8::Utils::ToLocal(name_handle), info); |
| } |
| RETURN_IF_SCHEDULED_EXCEPTION(); |
| if (!r.IsEmpty()) { |
| *attrs = NONE; |
| return *v8::Utils::OpenHandle(*r); |
| } |
| } |
| |
| MaybeObject* result = holder_handle->GetPropertyPostInterceptor( |
| *receiver_handle, |
| *name_handle, |
| attrs); |
| RETURN_IF_SCHEDULED_EXCEPTION(); |
| return result; |
| } |
| |
| |
| /** |
| * Loads a property with an interceptor performing post interceptor |
| * lookup if interceptor failed. |
| */ |
| MaybeObject* LoadPropertyWithInterceptorForLoad(Arguments args) { |
| PropertyAttributes attr = NONE; |
| Object* result; |
| { MaybeObject* maybe_result = LoadWithInterceptor(&args, &attr); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| |
| // If the property is present, return it. |
| if (attr != ABSENT) return result; |
| return ThrowReferenceError(String::cast(args[0])); |
| } |
| |
| |
| MaybeObject* LoadPropertyWithInterceptorForCall(Arguments args) { |
| PropertyAttributes attr; |
| MaybeObject* result = LoadWithInterceptor(&args, &attr); |
| RETURN_IF_SCHEDULED_EXCEPTION(); |
| // This is call IC. In this case, we simply return the undefined result which |
| // will lead to an exception when trying to invoke the result as a |
| // function. |
| return result; |
| } |
| |
| |
| MaybeObject* StoreInterceptorProperty(Arguments args) { |
| JSObject* recv = JSObject::cast(args[0]); |
| String* name = String::cast(args[1]); |
| Object* value = args[2]; |
| ASSERT(recv->HasNamedInterceptor()); |
| PropertyAttributes attr = NONE; |
| MaybeObject* result = recv->SetPropertyWithInterceptor(name, value, attr); |
| return result; |
| } |
| |
| |
| MaybeObject* KeyedLoadPropertyWithInterceptor(Arguments args) { |
| JSObject* receiver = JSObject::cast(args[0]); |
| ASSERT(Smi::cast(args[1])->value() >= 0); |
| uint32_t index = Smi::cast(args[1])->value(); |
| return receiver->GetElementWithInterceptor(receiver, index); |
| } |
| |
| |
| MaybeObject* StubCompiler::CompileCallInitialize(Code::Flags flags) { |
| HandleScope scope; |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateInitialize(masm(), argc); |
| } else { |
| KeyedCallIC::GenerateInitialize(masm(), argc); |
| } |
| Object* result; |
| { MaybeObject* maybe_result = |
| GetCodeWithFlags(flags, "CompileCallInitialize"); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Counters::call_initialize_stubs.Increment(); |
| Code* code = Code::cast(result); |
| USE(code); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_INITIALIZE_TAG), |
| code, code->arguments_count())); |
| return result; |
| } |
| |
| |
| MaybeObject* StubCompiler::CompileCallPreMonomorphic(Code::Flags flags) { |
| HandleScope scope; |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| // The code of the PreMonomorphic stub is the same as the code |
| // of the Initialized stub. They just differ on the code object flags. |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateInitialize(masm(), argc); |
| } else { |
| KeyedCallIC::GenerateInitialize(masm(), argc); |
| } |
| Object* result; |
| { MaybeObject* maybe_result = |
| GetCodeWithFlags(flags, "CompileCallPreMonomorphic"); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Counters::call_premonomorphic_stubs.Increment(); |
| Code* code = Code::cast(result); |
| USE(code); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_PRE_MONOMORPHIC_TAG), |
| code, code->arguments_count())); |
| return result; |
| } |
| |
| |
| MaybeObject* StubCompiler::CompileCallNormal(Code::Flags flags) { |
| HandleScope scope; |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateNormal(masm(), argc); |
| } else { |
| KeyedCallIC::GenerateNormal(masm(), argc); |
| } |
| Object* result; |
| { MaybeObject* maybe_result = GetCodeWithFlags(flags, "CompileCallNormal"); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Counters::call_normal_stubs.Increment(); |
| Code* code = Code::cast(result); |
| USE(code); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_NORMAL_TAG), |
| code, code->arguments_count())); |
| return result; |
| } |
| |
| |
| MaybeObject* StubCompiler::CompileCallMegamorphic(Code::Flags flags) { |
| HandleScope scope; |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateMegamorphic(masm(), argc); |
| } else { |
| KeyedCallIC::GenerateMegamorphic(masm(), argc); |
| } |
| |
| Object* result; |
| { MaybeObject* maybe_result = |
| GetCodeWithFlags(flags, "CompileCallMegamorphic"); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Counters::call_megamorphic_stubs.Increment(); |
| Code* code = Code::cast(result); |
| USE(code); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_MEGAMORPHIC_TAG), |
| code, code->arguments_count())); |
| return result; |
| } |
| |
| |
| MaybeObject* StubCompiler::CompileCallMiss(Code::Flags flags) { |
| HandleScope scope; |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateMiss(masm(), argc); |
| } else { |
| KeyedCallIC::GenerateMiss(masm(), argc); |
| } |
| Object* result; |
| { MaybeObject* maybe_result = GetCodeWithFlags(flags, "CompileCallMiss"); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Counters::call_megamorphic_stubs.Increment(); |
| Code* code = Code::cast(result); |
| USE(code); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_MISS_TAG), |
| code, code->arguments_count())); |
| return result; |
| } |
| |
| |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| MaybeObject* StubCompiler::CompileCallDebugBreak(Code::Flags flags) { |
| HandleScope scope; |
| Debug::GenerateCallICDebugBreak(masm()); |
| Object* result; |
| { MaybeObject* maybe_result = |
| GetCodeWithFlags(flags, "CompileCallDebugBreak"); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Code* code = Code::cast(result); |
| USE(code); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| USE(kind); |
| PROFILE(CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_DEBUG_BREAK_TAG), |
| code, code->arguments_count())); |
| return result; |
| } |
| |
| |
| MaybeObject* StubCompiler::CompileCallDebugPrepareStepIn(Code::Flags flags) { |
| HandleScope scope; |
| // Use the same code for the the step in preparations as we do for |
| // the miss case. |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateMiss(masm(), argc); |
| } else { |
| KeyedCallIC::GenerateMiss(masm(), argc); |
| } |
| Object* result; |
| { MaybeObject* maybe_result = |
| GetCodeWithFlags(flags, "CompileCallDebugPrepareStepIn"); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Code* code = Code::cast(result); |
| USE(code); |
| PROFILE(CodeCreateEvent( |
| CALL_LOGGER_TAG(kind, CALL_DEBUG_PREPARE_STEP_IN_TAG), |
| code, |
| code->arguments_count())); |
| return result; |
| } |
| #endif |
| |
| #undef CALL_LOGGER_TAG |
| |
| MaybeObject* StubCompiler::GetCodeWithFlags(Code::Flags flags, |
| const char* name) { |
| // Check for allocation failures during stub compilation. |
| if (failure_->IsFailure()) return failure_; |
| |
| // Create code object in the heap. |
| CodeDesc desc; |
| masm_.GetCode(&desc); |
| MaybeObject* result = Heap::CreateCode(desc, flags, masm_.CodeObject()); |
| #ifdef ENABLE_DISASSEMBLER |
| if (FLAG_print_code_stubs && !result->IsFailure()) { |
| Code::cast(result->ToObjectUnchecked())->Disassemble(name); |
| } |
| #endif |
| return result; |
| } |
| |
| |
| MaybeObject* StubCompiler::GetCodeWithFlags(Code::Flags flags, String* name) { |
| if (FLAG_print_code_stubs && (name != NULL)) { |
| return GetCodeWithFlags(flags, *name->ToCString()); |
| } |
| return GetCodeWithFlags(flags, reinterpret_cast<char*>(NULL)); |
| } |
| |
| |
| void StubCompiler::LookupPostInterceptor(JSObject* holder, |
| String* name, |
| LookupResult* lookup) { |
| holder->LocalLookupRealNamedProperty(name, lookup); |
| if (!lookup->IsProperty()) { |
| lookup->NotFound(); |
| Object* proto = holder->GetPrototype(); |
| if (proto != Heap::null_value()) { |
| proto->Lookup(name, lookup); |
| } |
| } |
| } |
| |
| |
| |
| MaybeObject* LoadStubCompiler::GetCode(PropertyType type, String* name) { |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, type); |
| MaybeObject* result = GetCodeWithFlags(flags, name); |
| if (!result->IsFailure()) { |
| PROFILE(CodeCreateEvent(Logger::LOAD_IC_TAG, |
| Code::cast(result->ToObjectUnchecked()), |
| name)); |
| } |
| return result; |
| } |
| |
| |
| MaybeObject* KeyedLoadStubCompiler::GetCode(PropertyType type, String* name) { |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, type); |
| MaybeObject* result = GetCodeWithFlags(flags, name); |
| if (!result->IsFailure()) { |
| PROFILE(CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, |
| Code::cast(result->ToObjectUnchecked()), |
| name)); |
| } |
| return result; |
| } |
| |
| |
| MaybeObject* StoreStubCompiler::GetCode(PropertyType type, String* name) { |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::STORE_IC, type); |
| MaybeObject* result = GetCodeWithFlags(flags, name); |
| if (!result->IsFailure()) { |
| PROFILE(CodeCreateEvent(Logger::STORE_IC_TAG, |
| Code::cast(result->ToObjectUnchecked()), |
| name)); |
| } |
| return result; |
| } |
| |
| |
| MaybeObject* KeyedStoreStubCompiler::GetCode(PropertyType type, String* name) { |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::KEYED_STORE_IC, type); |
| MaybeObject* result = GetCodeWithFlags(flags, name); |
| if (!result->IsFailure()) { |
| PROFILE(CodeCreateEvent(Logger::KEYED_STORE_IC_TAG, |
| Code::cast(result->ToObjectUnchecked()), |
| name)); |
| } |
| return result; |
| } |
| |
| |
| CallStubCompiler::CallStubCompiler(int argc, |
| InLoopFlag in_loop, |
| Code::Kind kind, |
| InlineCacheHolderFlag cache_holder) |
| : arguments_(argc) |
| , in_loop_(in_loop) |
| , kind_(kind) |
| , cache_holder_(cache_holder) { |
| } |
| |
| |
| MaybeObject* CallStubCompiler::CompileCustomCall(int generator_id, |
| Object* object, |
| JSObject* holder, |
| JSGlobalPropertyCell* cell, |
| JSFunction* function, |
| String* fname) { |
| ASSERT(generator_id >= 0 && generator_id < kNumCallGenerators); |
| switch (generator_id) { |
| #define CALL_GENERATOR_CASE(ignored1, ignored2, name) \ |
| case k##name##CallGenerator: \ |
| return CallStubCompiler::Compile##name##Call(object, \ |
| holder, \ |
| cell, \ |
| function, \ |
| fname); |
| CUSTOM_CALL_IC_GENERATORS(CALL_GENERATOR_CASE) |
| #undef CALL_GENERATOR_CASE |
| } |
| UNREACHABLE(); |
| return Heap::undefined_value(); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::GetCode(PropertyType type, String* name) { |
| int argc = arguments_.immediate(); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(kind_, |
| type, |
| cache_holder_, |
| in_loop_, |
| argc); |
| return GetCodeWithFlags(flags, name); |
| } |
| |
| |
| MaybeObject* CallStubCompiler::GetCode(JSFunction* function) { |
| String* function_name = NULL; |
| if (function->shared()->name()->IsString()) { |
| function_name = String::cast(function->shared()->name()); |
| } |
| return GetCode(CONSTANT_FUNCTION, function_name); |
| } |
| |
| |
| MaybeObject* ConstructStubCompiler::GetCode() { |
| Code::Flags flags = Code::ComputeFlags(Code::STUB); |
| Object* result; |
| { MaybeObject* maybe_result = GetCodeWithFlags(flags, "ConstructStub"); |
| if (!maybe_result->ToObject(&result)) return maybe_result; |
| } |
| Code* code = Code::cast(result); |
| USE(code); |
| PROFILE(CodeCreateEvent(Logger::STUB_TAG, code, "ConstructStub")); |
| return result; |
| } |
| |
| |
| CallOptimization::CallOptimization(LookupResult* lookup) { |
| if (!lookup->IsProperty() || !lookup->IsCacheable() || |
| lookup->type() != CONSTANT_FUNCTION) { |
| Initialize(NULL); |
| } else { |
| // We only optimize constant function calls. |
| Initialize(lookup->GetConstantFunction()); |
| } |
| } |
| |
| CallOptimization::CallOptimization(JSFunction* function) { |
| Initialize(function); |
| } |
| |
| |
| int CallOptimization::GetPrototypeDepthOfExpectedType(JSObject* object, |
| JSObject* holder) const { |
| ASSERT(is_simple_api_call_); |
| if (expected_receiver_type_ == NULL) return 0; |
| int depth = 0; |
| while (object != holder) { |
| if (object->IsInstanceOf(expected_receiver_type_)) return depth; |
| object = JSObject::cast(object->GetPrototype()); |
| ++depth; |
| } |
| if (holder->IsInstanceOf(expected_receiver_type_)) return depth; |
| return kInvalidProtoDepth; |
| } |
| |
| |
| void CallOptimization::Initialize(JSFunction* function) { |
| constant_function_ = NULL; |
| is_simple_api_call_ = false; |
| expected_receiver_type_ = NULL; |
| api_call_info_ = NULL; |
| |
| if (function == NULL || !function->is_compiled()) return; |
| |
| constant_function_ = function; |
| AnalyzePossibleApiFunction(function); |
| } |
| |
| |
| void CallOptimization::AnalyzePossibleApiFunction(JSFunction* function) { |
| SharedFunctionInfo* sfi = function->shared(); |
| if (!sfi->IsApiFunction()) return; |
| FunctionTemplateInfo* info = sfi->get_api_func_data(); |
| |
| // Require a C++ callback. |
| if (info->call_code()->IsUndefined()) return; |
| api_call_info_ = CallHandlerInfo::cast(info->call_code()); |
| |
| // Accept signatures that either have no restrictions at all or |
| // only have restrictions on the receiver. |
| if (!info->signature()->IsUndefined()) { |
| SignatureInfo* signature = SignatureInfo::cast(info->signature()); |
| if (!signature->args()->IsUndefined()) return; |
| if (!signature->receiver()->IsUndefined()) { |
| expected_receiver_type_ = |
| FunctionTemplateInfo::cast(signature->receiver()); |
| } |
| } |
| |
| is_simple_api_call_ = true; |
| } |
| |
| |
| } } // namespace v8::internal |
