| // Copyright 2012 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 "ast.h" |
| #include "code-stubs.h" |
| #include "gdb-jit.h" |
| #include "ic-inl.h" |
| #include "stub-cache.h" |
| #include "vm-state-inl.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // ----------------------------------------------------------------------- |
| // StubCache implementation. |
| |
| |
| StubCache::StubCache(Isolate* isolate) : isolate_(isolate) { |
| ASSERT(isolate == Isolate::Current()); |
| } |
| |
| |
| void StubCache::Initialize() { |
| ASSERT(IsPowerOf2(kPrimaryTableSize)); |
| ASSERT(IsPowerOf2(kSecondaryTableSize)); |
| 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); |
| STATIC_ASSERT((Code::ICStateField::kMask & 1) == 1); |
| |
| // 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* old_code = primary->value; |
| |
| // If the primary entry has useful data in it, we retire it to the |
| // secondary cache before overwriting it. |
| if (old_code != isolate_->builtins()->builtin(Builtins::kIllegal)) { |
| Map* old_map = primary->map; |
| Code::Flags old_flags = Code::RemoveTypeFromFlags(old_code->flags()); |
| int seed = PrimaryOffset(primary->key, old_flags, old_map); |
| int secondary_offset = SecondaryOffset(primary->key, old_flags, seed); |
| Entry* secondary = entry(secondary_, secondary_offset); |
| *secondary = *primary; |
| } |
| |
| // Update primary cache. |
| primary->key = name; |
| primary->value = code; |
| primary->map = map; |
| isolate()->counters()->megamorphic_stub_cache_updates()->Increment(); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeLoadNonexistent(Handle<String> name, |
| Handle<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. |
| Handle<String> cache_name = factory()->empty_string(); |
| if (receiver->IsGlobalObject()) cache_name = name; |
| Handle<JSObject> last = receiver; |
| while (last->GetPrototype() != heap()->null_value()) { |
| last = Handle<JSObject>(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); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*cache_name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| LoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadNonexistent(cache_name, receiver, last); |
| PROFILE(isolate_, CodeCreateEvent(Logger::LOAD_IC_TAG, *code, *cache_name)); |
| GDBJIT(AddCode(GDBJITInterface::LOAD_IC, *cache_name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, cache_name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeLoadField(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> holder, |
| int field_index) { |
| ASSERT(IC::GetCodeCacheForObject(*receiver, *holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, FIELD); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| LoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadField(receiver, holder, field_index, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeLoadCallback(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> holder, |
| Handle<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); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| LoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadCallback(name, receiver, holder, callback); |
| PROFILE(isolate_, CodeCreateEvent(Logger::LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeLoadConstant(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> holder, |
| Handle<JSFunction> value) { |
| ASSERT(IC::GetCodeCacheForObject(*receiver, *holder) == OWN_MAP); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::LOAD_IC, CONSTANT_FUNCTION); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| LoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadConstant(receiver, holder, value, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeLoadInterceptor(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> holder) { |
| ASSERT(IC::GetCodeCacheForObject(*receiver, *holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, INTERCEPTOR); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| LoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadInterceptor(receiver, holder, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeLoadNormal() { |
| return isolate_->builtins()->LoadIC_Normal(); |
| } |
| |
| |
| Handle<Code> StubCache::ComputeLoadGlobal(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<GlobalObject> holder, |
| Handle<JSGlobalPropertyCell> cell, |
| bool is_dont_delete) { |
| ASSERT(IC::GetCodeCacheForObject(*receiver, *holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, NORMAL); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| LoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadGlobal(receiver, holder, cell, name, is_dont_delete); |
| PROFILE(isolate_, CodeCreateEvent(Logger::LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedLoadField(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> holder, |
| int field_index) { |
| ASSERT(IC::GetCodeCacheForObject(*receiver, *holder) == OWN_MAP); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, FIELD); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| KeyedLoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadField(name, receiver, holder, field_index); |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedLoadConstant(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> holder, |
| Handle<JSFunction> value) { |
| ASSERT(IC::GetCodeCacheForObject(*receiver, *holder) == OWN_MAP); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CONSTANT_FUNCTION); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| KeyedLoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadConstant(name, receiver, holder, value); |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedLoadInterceptor(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> holder) { |
| ASSERT(IC::GetCodeCacheForObject(*receiver, *holder) == OWN_MAP); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, INTERCEPTOR); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| KeyedLoadStubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileLoadInterceptor(receiver, holder, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedLoadCallback( |
| Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<JSObject> holder, |
| Handle<AccessorInfo> callback) { |
| ASSERT(IC::GetCodeCacheForObject(*receiver, *holder) == OWN_MAP); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CALLBACKS); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| KeyedLoadStubCompiler compiler(isolate_); |
| Handle<Code> code = |
| compiler.CompileLoadCallback(name, receiver, holder, callback); |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedLoadArrayLength(Handle<String> name, |
| Handle<JSArray> receiver) { |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CALLBACKS); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| KeyedLoadStubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileLoadArrayLength(name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedLoadStringLength(Handle<String> name, |
| Handle<String> receiver) { |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CALLBACKS); |
| Handle<Map> map(receiver->map()); |
| Handle<Object> probe(map->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| KeyedLoadStubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileLoadStringLength(name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_LOAD_IC, *name, *code)); |
| Map::UpdateCodeCache(map, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedLoadFunctionPrototype( |
| Handle<String> name, |
| Handle<JSFunction> receiver) { |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, CALLBACKS); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| KeyedLoadStubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileLoadFunctionPrototype(name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_LOAD_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeStoreField(Handle<String> name, |
| Handle<JSObject> receiver, |
| int field_index, |
| Handle<Map> transition, |
| StrictModeFlag strict_mode) { |
| PropertyType type = (transition.is_null()) ? FIELD : MAP_TRANSITION; |
| Code::Flags flags = Code::ComputeMonomorphicFlags( |
| Code::STORE_IC, type, strict_mode); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| StoreStubCompiler compiler(isolate_, strict_mode); |
| Handle<Code> code = |
| compiler.CompileStoreField(receiver, field_index, transition, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::STORE_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::STORE_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedLoadOrStoreElement( |
| Handle<JSObject> receiver, |
| KeyedIC::StubKind stub_kind, |
| StrictModeFlag strict_mode) { |
| KeyedAccessGrowMode grow_mode = |
| KeyedIC::GetGrowModeFromStubKind(stub_kind); |
| Code::ExtraICState extra_state = |
| Code::ComputeExtraICState(grow_mode, strict_mode); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags( |
| stub_kind == KeyedIC::LOAD ? Code::KEYED_LOAD_IC |
| : Code::KEYED_STORE_IC, |
| NORMAL, |
| extra_state); |
| Handle<String> name; |
| switch (stub_kind) { |
| case KeyedIC::LOAD: |
| name = isolate()->factory()->KeyedLoadElementMonomorphic_symbol(); |
| break; |
| case KeyedIC::STORE_NO_TRANSITION: |
| name = isolate()->factory()->KeyedStoreElementMonomorphic_symbol(); |
| break; |
| case KeyedIC::STORE_AND_GROW_NO_TRANSITION: |
| name = isolate()->factory()->KeyedStoreAndGrowElementMonomorphic_symbol(); |
| break; |
| default: |
| UNREACHABLE(); |
| break; |
| } |
| Handle<Map> receiver_map(receiver->map()); |
| Handle<Object> probe(receiver_map->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| Handle<Code> code; |
| switch (stub_kind) { |
| case KeyedIC::LOAD: { |
| KeyedLoadStubCompiler compiler(isolate_); |
| code = compiler.CompileLoadElement(receiver_map); |
| break; |
| } |
| case KeyedIC::STORE_AND_GROW_NO_TRANSITION: { |
| KeyedStoreStubCompiler compiler(isolate_, strict_mode, |
| ALLOW_JSARRAY_GROWTH); |
| code = compiler.CompileStoreElement(receiver_map); |
| break; |
| } |
| case KeyedIC::STORE_NO_TRANSITION: { |
| KeyedStoreStubCompiler compiler(isolate_, strict_mode, |
| DO_NOT_ALLOW_JSARRAY_GROWTH); |
| code = compiler.CompileStoreElement(receiver_map); |
| break; |
| } |
| default: |
| UNREACHABLE(); |
| break; |
| } |
| |
| ASSERT(!code.is_null()); |
| |
| if (stub_kind == KeyedIC::LOAD) { |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, 0)); |
| } else { |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_STORE_IC_TAG, *code, 0)); |
| } |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeStoreNormal(StrictModeFlag strict_mode) { |
| return (strict_mode == kStrictMode) |
| ? isolate_->builtins()->Builtins::StoreIC_Normal_Strict() |
| : isolate_->builtins()->Builtins::StoreIC_Normal(); |
| } |
| |
| |
| Handle<Code> StubCache::ComputeStoreGlobal(Handle<String> name, |
| Handle<GlobalObject> receiver, |
| Handle<JSGlobalPropertyCell> cell, |
| StrictModeFlag strict_mode) { |
| Code::Flags flags = Code::ComputeMonomorphicFlags( |
| Code::STORE_IC, NORMAL, strict_mode); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| StoreStubCompiler compiler(isolate_, strict_mode); |
| Handle<Code> code = compiler.CompileStoreGlobal(receiver, cell, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::STORE_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::STORE_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeStoreCallback(Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<AccessorInfo> callback, |
| StrictModeFlag strict_mode) { |
| ASSERT(v8::ToCData<Address>(callback->setter()) != 0); |
| Code::Flags flags = Code::ComputeMonomorphicFlags( |
| Code::STORE_IC, CALLBACKS, strict_mode); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| StoreStubCompiler compiler(isolate_, strict_mode); |
| Handle<Code> code = compiler.CompileStoreCallback(receiver, callback, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::STORE_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::STORE_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeStoreInterceptor(Handle<String> name, |
| Handle<JSObject> receiver, |
| StrictModeFlag strict_mode) { |
| Code::Flags flags = Code::ComputeMonomorphicFlags( |
| Code::STORE_IC, INTERCEPTOR, strict_mode); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| StoreStubCompiler compiler(isolate_, strict_mode); |
| Handle<Code> code = compiler.CompileStoreInterceptor(receiver, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::STORE_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::STORE_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| Handle<Code> StubCache::ComputeKeyedStoreField(Handle<String> name, |
| Handle<JSObject> receiver, |
| int field_index, |
| Handle<Map> transition, |
| StrictModeFlag strict_mode) { |
| PropertyType type = (transition.is_null()) ? FIELD : MAP_TRANSITION; |
| Code::Flags flags = Code::ComputeMonomorphicFlags( |
| Code::KEYED_STORE_IC, type, strict_mode); |
| Handle<Object> probe(receiver->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| KeyedStoreStubCompiler compiler(isolate(), strict_mode, |
| DO_NOT_ALLOW_JSARRAY_GROWTH); |
| Handle<Code> code = |
| compiler.CompileStoreField(receiver, field_index, transition, name); |
| PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_STORE_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_STORE_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(receiver, name, code); |
| return code; |
| } |
| |
| |
| #define CALL_LOGGER_TAG(kind, type) \ |
| (kind == Code::CALL_IC ? Logger::type : Logger::KEYED_##type) |
| |
| Handle<Code> StubCache::ComputeCallConstant(int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state, |
| Handle<String> name, |
| Handle<Object> object, |
| Handle<JSObject> holder, |
| Handle<JSFunction> function) { |
| // Compute the check type and the map. |
| InlineCacheHolderFlag cache_holder = |
| IC::GetCodeCacheForObject(*object, *holder); |
| Handle<JSObject> map_holder(IC::GetCodeCacheHolder(*object, cache_holder)); |
| |
| // Compute check type based on receiver/holder. |
| CheckType check = RECEIVER_MAP_CHECK; |
| if (object->IsString()) { |
| check = STRING_CHECK; |
| } else if (object->IsNumber()) { |
| check = NUMBER_CHECK; |
| } else if (object->IsBoolean()) { |
| check = BOOLEAN_CHECK; |
| } |
| |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(kind, CONSTANT_FUNCTION, extra_state, |
| cache_holder, argc); |
| Handle<Object> probe(map_holder->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| CallStubCompiler compiler(isolate_, argc, kind, extra_state, cache_holder); |
| Handle<Code> code = |
| compiler.CompileCallConstant(object, holder, function, name, check); |
| code->set_check_type(check); |
| ASSERT_EQ(flags, code->flags()); |
| PROFILE(isolate_, |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_IC_TAG), *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::CALL_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(map_holder, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallField(int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state, |
| Handle<String> name, |
| Handle<Object> object, |
| Handle<JSObject> holder, |
| int index) { |
| // Compute the check type and the map. |
| InlineCacheHolderFlag cache_holder = |
| IC::GetCodeCacheForObject(*object, *holder); |
| Handle<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, extra_state, |
| cache_holder, argc); |
| Handle<Object> probe(map_holder->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| CallStubCompiler compiler(isolate_, argc, kind, extra_state, cache_holder); |
| Handle<Code> code = |
| compiler.CompileCallField(Handle<JSObject>::cast(object), |
| holder, index, name); |
| ASSERT_EQ(flags, code->flags()); |
| PROFILE(isolate_, |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_IC_TAG), *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::CALL_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(map_holder, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallInterceptor(int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state, |
| Handle<String> name, |
| Handle<Object> object, |
| Handle<JSObject> holder) { |
| // Compute the check type and the map. |
| InlineCacheHolderFlag cache_holder = |
| IC::GetCodeCacheForObject(*object, *holder); |
| Handle<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, extra_state, |
| cache_holder, argc); |
| Handle<Object> probe(map_holder->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| CallStubCompiler compiler(isolate(), argc, kind, extra_state, cache_holder); |
| Handle<Code> code = |
| compiler.CompileCallInterceptor(Handle<JSObject>::cast(object), |
| holder, name); |
| ASSERT_EQ(flags, code->flags()); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_IC_TAG), *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::CALL_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(map_holder, name, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallGlobal(int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state, |
| Handle<String> name, |
| Handle<JSObject> receiver, |
| Handle<GlobalObject> holder, |
| Handle<JSGlobalPropertyCell> cell, |
| Handle<JSFunction> function) { |
| InlineCacheHolderFlag cache_holder = |
| IC::GetCodeCacheForObject(*receiver, *holder); |
| Handle<JSObject> map_holder(IC::GetCodeCacheHolder(*receiver, cache_holder)); |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(kind, NORMAL, extra_state, |
| cache_holder, argc); |
| Handle<Object> probe(map_holder->map()->FindInCodeCache(*name, flags)); |
| if (probe->IsCode()) return Handle<Code>::cast(probe); |
| |
| CallStubCompiler compiler(isolate(), argc, kind, extra_state, cache_holder); |
| Handle<Code> code = |
| compiler.CompileCallGlobal(receiver, holder, cell, function, name); |
| ASSERT_EQ(flags, code->flags()); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_IC_TAG), *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::CALL_IC, *name, *code)); |
| JSObject::UpdateMapCodeCache(map_holder, name, code); |
| return code; |
| } |
| |
| |
| static void FillCache(Isolate* isolate, Handle<Code> code) { |
| Handle<UnseededNumberDictionary> dictionary = |
| UnseededNumberDictionary::Set(isolate->factory()->non_monomorphic_cache(), |
| code->flags(), |
| code); |
| isolate->heap()->public_set_non_monomorphic_cache(*dictionary); |
| } |
| |
| |
| Code* StubCache::FindCallInitialize(int argc, |
| RelocInfo::Mode mode, |
| Code::Kind kind) { |
| Code::ExtraICState extra_state = |
| CallICBase::StringStubState::encode(DEFAULT_STRING_STUB) | |
| CallICBase::Contextual::encode(mode == RelocInfo::CODE_TARGET_CONTEXT); |
| Code::Flags flags = |
| Code::ComputeFlags(kind, UNINITIALIZED, extra_state, NORMAL, argc); |
| |
| // Use raw_unchecked... so we don't get assert failures during GC. |
| UnseededNumberDictionary* dictionary = |
| isolate()->heap()->raw_unchecked_non_monomorphic_cache(); |
| int entry = dictionary->FindEntry(isolate(), flags); |
| ASSERT(entry != -1); |
| Object* code = dictionary->ValueAt(entry); |
| // This might be called during the marking phase of the collector |
| // hence the unchecked cast. |
| return reinterpret_cast<Code*>(code); |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallInitialize(int argc, |
| RelocInfo::Mode mode, |
| Code::Kind kind) { |
| Code::ExtraICState extra_state = |
| CallICBase::StringStubState::encode(DEFAULT_STRING_STUB) | |
| CallICBase::Contextual::encode(mode == RelocInfo::CODE_TARGET_CONTEXT); |
| Code::Flags flags = |
| Code::ComputeFlags(kind, UNINITIALIZED, extra_state, NORMAL, argc); |
| Handle<UnseededNumberDictionary> cache = |
| isolate_->factory()->non_monomorphic_cache(); |
| int entry = cache->FindEntry(isolate_, flags); |
| if (entry != -1) return Handle<Code>(Code::cast(cache->ValueAt(entry))); |
| |
| StubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileCallInitialize(flags); |
| FillCache(isolate_, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallInitialize(int argc, RelocInfo::Mode mode) { |
| return ComputeCallInitialize(argc, mode, Code::CALL_IC); |
| } |
| |
| |
| Handle<Code> StubCache::ComputeKeyedCallInitialize(int argc) { |
| return ComputeCallInitialize(argc, RelocInfo::CODE_TARGET, |
| Code::KEYED_CALL_IC); |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallPreMonomorphic( |
| int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, PREMONOMORPHIC, extra_state, NORMAL, argc); |
| Handle<UnseededNumberDictionary> cache = |
| isolate_->factory()->non_monomorphic_cache(); |
| int entry = cache->FindEntry(isolate_, flags); |
| if (entry != -1) return Handle<Code>(Code::cast(cache->ValueAt(entry))); |
| |
| StubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileCallPreMonomorphic(flags); |
| FillCache(isolate_, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallNormal(int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, MONOMORPHIC, extra_state, NORMAL, argc); |
| Handle<UnseededNumberDictionary> cache = |
| isolate_->factory()->non_monomorphic_cache(); |
| int entry = cache->FindEntry(isolate_, flags); |
| if (entry != -1) return Handle<Code>(Code::cast(cache->ValueAt(entry))); |
| |
| StubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileCallNormal(flags); |
| FillCache(isolate_, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallArguments(int argc, Code::Kind kind) { |
| ASSERT(kind == Code::KEYED_CALL_IC); |
| Code::Flags flags = |
| Code::ComputeFlags(kind, MEGAMORPHIC, Code::kNoExtraICState, |
| NORMAL, argc); |
| Handle<UnseededNumberDictionary> cache = |
| isolate_->factory()->non_monomorphic_cache(); |
| int entry = cache->FindEntry(isolate_, flags); |
| if (entry != -1) return Handle<Code>(Code::cast(cache->ValueAt(entry))); |
| |
| StubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileCallArguments(flags); |
| FillCache(isolate_, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallMegamorphic( |
| int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state) { |
| Code::Flags flags = |
| Code::ComputeFlags(kind, MEGAMORPHIC, extra_state, |
| NORMAL, argc); |
| Handle<UnseededNumberDictionary> cache = |
| isolate_->factory()->non_monomorphic_cache(); |
| int entry = cache->FindEntry(isolate_, flags); |
| if (entry != -1) return Handle<Code>(Code::cast(cache->ValueAt(entry))); |
| |
| StubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileCallMegamorphic(flags); |
| FillCache(isolate_, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallMiss(int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state) { |
| // 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, MONOMORPHIC_PROTOTYPE_FAILURE, extra_state, |
| NORMAL, argc, OWN_MAP); |
| Handle<UnseededNumberDictionary> cache = |
| isolate_->factory()->non_monomorphic_cache(); |
| int entry = cache->FindEntry(isolate_, flags); |
| if (entry != -1) return Handle<Code>(Code::cast(cache->ValueAt(entry))); |
| |
| StubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileCallMiss(flags); |
| FillCache(isolate_, code); |
| return code; |
| } |
| |
| |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| Handle<Code> StubCache::ComputeCallDebugBreak(int argc, |
| Code::Kind kind) { |
| // Extra IC state is irrelevant for debug break ICs. They jump to |
| // the actual call ic to carry out the work. |
| Code::Flags flags = |
| Code::ComputeFlags(kind, DEBUG_BREAK, Code::kNoExtraICState, |
| NORMAL, argc); |
| Handle<UnseededNumberDictionary> cache = |
| isolate_->factory()->non_monomorphic_cache(); |
| int entry = cache->FindEntry(isolate_, flags); |
| if (entry != -1) return Handle<Code>(Code::cast(cache->ValueAt(entry))); |
| |
| StubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileCallDebugBreak(flags); |
| FillCache(isolate_, code); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCache::ComputeCallDebugPrepareStepIn(int argc, |
| Code::Kind kind) { |
| // Extra IC state is irrelevant for debug break ICs. They jump to |
| // the actual call ic to carry out the work. |
| Code::Flags flags = |
| Code::ComputeFlags(kind, DEBUG_PREPARE_STEP_IN, Code::kNoExtraICState, |
| NORMAL, argc); |
| Handle<UnseededNumberDictionary> cache = |
| isolate_->factory()->non_monomorphic_cache(); |
| int entry = cache->FindEntry(isolate_, flags); |
| if (entry != -1) return Handle<Code>(Code::cast(cache->ValueAt(entry))); |
| |
| StubCompiler compiler(isolate_); |
| Handle<Code> code = compiler.CompileCallDebugPrepareStepIn(flags); |
| FillCache(isolate_, code); |
| return code; |
| } |
| #endif |
| |
| |
| void StubCache::Clear() { |
| Code* empty = isolate_->builtins()->builtin(Builtins::kIllegal); |
| for (int i = 0; i < kPrimaryTableSize; i++) { |
| primary_[i].key = heap()->empty_string(); |
| primary_[i].value = empty; |
| } |
| for (int j = 0; j < kSecondaryTableSize; j++) { |
| secondary_[j].key = heap()->empty_string(); |
| secondary_[j].value = empty; |
| } |
| } |
| |
| |
| void StubCache::CollectMatchingMaps(SmallMapList* types, |
| String* name, |
| Code::Flags flags, |
| Handle<Context> global_context) { |
| for (int i = 0; i < kPrimaryTableSize; i++) { |
| if (primary_[i].key == name) { |
| Map* map = primary_[i].value->FindFirstMap(); |
| // Map can be NULL, if the stub is constant function call |
| // with a primitive receiver. |
| if (map == NULL) continue; |
| |
| int offset = PrimaryOffset(name, flags, map); |
| if (entry(primary_, offset) == &primary_[i] && |
| !TypeFeedbackOracle::CanRetainOtherContext(map, *global_context)) { |
| types->Add(Handle<Map>(map)); |
| } |
| } |
| } |
| |
| for (int i = 0; i < kSecondaryTableSize; i++) { |
| if (secondary_[i].key == name) { |
| Map* map = secondary_[i].value->FindFirstMap(); |
| // Map can be NULL, if the stub is constant function call |
| // with a primitive receiver. |
| if (map == NULL) continue; |
| |
| // Lookup in primary table and skip duplicates. |
| int primary_offset = PrimaryOffset(name, flags, map); |
| Entry* primary_entry = entry(primary_, primary_offset); |
| if (primary_entry->key == name) { |
| Map* primary_map = primary_entry->value->FindFirstMap(); |
| if (map == primary_map) continue; |
| } |
| |
| // Lookup in secondary table and add matches. |
| int offset = SecondaryOffset(name, flags, primary_offset); |
| if (entry(secondary_, offset) == &secondary_[i] && |
| !TypeFeedbackOracle::CanRetainOtherContext(map, *global_context)) { |
| types->Add(Handle<Map>(map)); |
| } |
| } |
| } |
| } |
| |
| |
| // ------------------------------------------------------------------------ |
| // StubCompiler implementation. |
| |
| |
| RUNTIME_FUNCTION(MaybeObject*, LoadCallbackProperty) { |
| 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(isolate); |
| v8::Handle<v8::Value> result; |
| { |
| // Leaving JavaScript. |
| VMState state(isolate, EXTERNAL); |
| ExternalCallbackScope call_scope(isolate, getter_address); |
| result = fun(v8::Utils::ToLocal(args.at<String>(4)), info); |
| } |
| RETURN_IF_SCHEDULED_EXCEPTION(isolate); |
| if (result.IsEmpty()) return HEAP->undefined_value(); |
| return *v8::Utils::OpenHandle(*result); |
| } |
| |
| |
| RUNTIME_FUNCTION(MaybeObject*, StoreCallbackProperty) { |
| 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(isolate); |
| LOG(isolate, ApiNamedPropertyAccess("store", recv, *name)); |
| CustomArguments custom_args(isolate, callback->data(), recv, recv); |
| v8::AccessorInfo info(custom_args.end()); |
| { |
| // Leaving JavaScript. |
| VMState state(isolate, EXTERNAL); |
| ExternalCallbackScope call_scope(isolate, setter_address); |
| fun(v8::Utils::ToLocal(name), v8::Utils::ToLocal(value), info); |
| } |
| RETURN_IF_SCHEDULED_EXCEPTION(isolate); |
| 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. |
| */ |
| RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorOnly) { |
| 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(isolate); |
| v8::Handle<v8::Value> r; |
| { |
| // Leaving JavaScript. |
| VMState state(isolate, EXTERNAL); |
| r = getter(v8::Utils::ToLocal(name_handle), info); |
| } |
| RETURN_IF_SCHEDULED_EXCEPTION(isolate); |
| if (!r.IsEmpty()) { |
| return *v8::Utils::OpenHandle(*r); |
| } |
| } |
| |
| return isolate->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, Isolate::Current()); |
| 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 Isolate::Current()->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. |
| |
| Isolate* isolate = receiver_handle->GetIsolate(); |
| |
| 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(isolate); |
| v8::Handle<v8::Value> r; |
| { |
| // Leaving JavaScript. |
| VMState state(isolate, EXTERNAL); |
| r = getter(v8::Utils::ToLocal(name_handle), info); |
| } |
| RETURN_IF_SCHEDULED_EXCEPTION(isolate); |
| if (!r.IsEmpty()) { |
| *attrs = NONE; |
| return *v8::Utils::OpenHandle(*r); |
| } |
| } |
| |
| MaybeObject* result = holder_handle->GetPropertyPostInterceptor( |
| *receiver_handle, |
| *name_handle, |
| attrs); |
| RETURN_IF_SCHEDULED_EXCEPTION(isolate); |
| return result; |
| } |
| |
| |
| /** |
| * Loads a property with an interceptor performing post interceptor |
| * lookup if interceptor failed. |
| */ |
| RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorForLoad) { |
| 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])); |
| } |
| |
| |
| RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorForCall) { |
| PropertyAttributes attr; |
| MaybeObject* result = LoadWithInterceptor(&args, &attr); |
| RETURN_IF_SCHEDULED_EXCEPTION(isolate); |
| // 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; |
| } |
| |
| |
| RUNTIME_FUNCTION(MaybeObject*, StoreInterceptorProperty) { |
| ASSERT(args.length() == 4); |
| JSObject* recv = JSObject::cast(args[0]); |
| String* name = String::cast(args[1]); |
| Object* value = args[2]; |
| ASSERT(args.smi_at(3) == kStrictMode || args.smi_at(3) == kNonStrictMode); |
| StrictModeFlag strict_mode = static_cast<StrictModeFlag>(args.smi_at(3)); |
| ASSERT(recv->HasNamedInterceptor()); |
| PropertyAttributes attr = NONE; |
| MaybeObject* result = recv->SetPropertyWithInterceptor( |
| name, value, attr, strict_mode); |
| return result; |
| } |
| |
| |
| RUNTIME_FUNCTION(MaybeObject*, KeyedLoadPropertyWithInterceptor) { |
| JSObject* receiver = JSObject::cast(args[0]); |
| ASSERT(args.smi_at(1) >= 0); |
| uint32_t index = args.smi_at(1); |
| return receiver->GetElementWithInterceptor(receiver, index); |
| } |
| |
| |
| Handle<Code> StubCompiler::CompileCallInitialize(Code::Flags flags) { |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| Code::ExtraICState extra_state = Code::ExtractExtraICStateFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateInitialize(masm(), argc, extra_state); |
| } else { |
| KeyedCallIC::GenerateInitialize(masm(), argc); |
| } |
| Handle<Code> code = GetCodeWithFlags(flags, "CompileCallInitialize"); |
| isolate()->counters()->call_initialize_stubs()->Increment(); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_INITIALIZE_TAG), |
| *code, code->arguments_count())); |
| GDBJIT(AddCode(GDBJITInterface::CALL_INITIALIZE, *code)); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCompiler::CompileCallPreMonomorphic(Code::Flags flags) { |
| 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); |
| Code::ExtraICState extra_state = Code::ExtractExtraICStateFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateInitialize(masm(), argc, extra_state); |
| } else { |
| KeyedCallIC::GenerateInitialize(masm(), argc); |
| } |
| Handle<Code> code = GetCodeWithFlags(flags, "CompileCallPreMonomorphic"); |
| isolate()->counters()->call_premonomorphic_stubs()->Increment(); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_PRE_MONOMORPHIC_TAG), |
| *code, code->arguments_count())); |
| GDBJIT(AddCode(GDBJITInterface::CALL_PRE_MONOMORPHIC, *code)); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCompiler::CompileCallNormal(Code::Flags flags) { |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| // Call normal is always with a explict receiver. |
| ASSERT(!CallIC::Contextual::decode( |
| Code::ExtractExtraICStateFromFlags(flags))); |
| CallIC::GenerateNormal(masm(), argc); |
| } else { |
| KeyedCallIC::GenerateNormal(masm(), argc); |
| } |
| Handle<Code> code = GetCodeWithFlags(flags, "CompileCallNormal"); |
| isolate()->counters()->call_normal_stubs()->Increment(); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_NORMAL_TAG), |
| *code, code->arguments_count())); |
| GDBJIT(AddCode(GDBJITInterface::CALL_NORMAL, *code)); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCompiler::CompileCallMegamorphic(Code::Flags flags) { |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| Code::ExtraICState extra_state = Code::ExtractExtraICStateFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateMegamorphic(masm(), argc, extra_state); |
| } else { |
| KeyedCallIC::GenerateMegamorphic(masm(), argc); |
| } |
| Handle<Code> code = GetCodeWithFlags(flags, "CompileCallMegamorphic"); |
| isolate()->counters()->call_megamorphic_stubs()->Increment(); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_MEGAMORPHIC_TAG), |
| *code, code->arguments_count())); |
| GDBJIT(AddCode(GDBJITInterface::CALL_MEGAMORPHIC, *code)); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCompiler::CompileCallArguments(Code::Flags flags) { |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| KeyedCallIC::GenerateNonStrictArguments(masm(), argc); |
| Handle<Code> code = GetCodeWithFlags(flags, "CompileCallArguments"); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(Code::ExtractKindFromFlags(flags), |
| CALL_MEGAMORPHIC_TAG), |
| *code, code->arguments_count())); |
| GDBJIT(AddCode(GDBJITInterface::CALL_MEGAMORPHIC, *code)); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCompiler::CompileCallMiss(Code::Flags flags) { |
| int argc = Code::ExtractArgumentsCountFromFlags(flags); |
| Code::Kind kind = Code::ExtractKindFromFlags(flags); |
| Code::ExtraICState extra_state = Code::ExtractExtraICStateFromFlags(flags); |
| if (kind == Code::CALL_IC) { |
| CallIC::GenerateMiss(masm(), argc, extra_state); |
| } else { |
| KeyedCallIC::GenerateMiss(masm(), argc); |
| } |
| Handle<Code> code = GetCodeWithFlags(flags, "CompileCallMiss"); |
| isolate()->counters()->call_megamorphic_stubs()->Increment(); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(kind, CALL_MISS_TAG), |
| *code, code->arguments_count())); |
| GDBJIT(AddCode(GDBJITInterface::CALL_MISS, *code)); |
| return code; |
| } |
| |
| |
| #ifdef ENABLE_DEBUGGER_SUPPORT |
| Handle<Code> StubCompiler::CompileCallDebugBreak(Code::Flags flags) { |
| Debug::GenerateCallICDebugBreak(masm()); |
| Handle<Code> code = GetCodeWithFlags(flags, "CompileCallDebugBreak"); |
| PROFILE(isolate(), |
| CodeCreateEvent(CALL_LOGGER_TAG(Code::ExtractKindFromFlags(flags), |
| CALL_DEBUG_BREAK_TAG), |
| *code, code->arguments_count())); |
| return code; |
| } |
| |
| |
| Handle<Code> StubCompiler::CompileCallDebugPrepareStepIn(Code::Flags flags) { |
| // 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) { |
| // For the debugger extra ic state is irrelevant. |
| CallIC::GenerateMiss(masm(), argc, Code::kNoExtraICState); |
| } else { |
| KeyedCallIC::GenerateMiss(masm(), argc); |
| } |
| Handle<Code> code = GetCodeWithFlags(flags, "CompileCallDebugPrepareStepIn"); |
| PROFILE(isolate(), |
| CodeCreateEvent( |
| CALL_LOGGER_TAG(kind, CALL_DEBUG_PREPARE_STEP_IN_TAG), |
| *code, |
| code->arguments_count())); |
| return code; |
| } |
| #endif // ENABLE_DEBUGGER_SUPPORT |
| |
| #undef CALL_LOGGER_TAG |
| |
| |
| Handle<Code> StubCompiler::GetCodeWithFlags(Code::Flags flags, |
| const char* name) { |
| // Create code object in the heap. |
| CodeDesc desc; |
| masm_.GetCode(&desc); |
| Handle<Code> code = factory()->NewCode(desc, flags, masm_.CodeObject()); |
| #ifdef ENABLE_DISASSEMBLER |
| if (FLAG_print_code_stubs) code->Disassemble(name); |
| #endif |
| return code; |
| } |
| |
| |
| Handle<Code> StubCompiler::GetCodeWithFlags(Code::Flags flags, |
| Handle<String> name) { |
| return (FLAG_print_code_stubs && !name.is_null()) |
| ? GetCodeWithFlags(flags, *name->ToCString()) |
| : GetCodeWithFlags(flags, reinterpret_cast<char*>(NULL)); |
| } |
| |
| |
| void StubCompiler::LookupPostInterceptor(Handle<JSObject> holder, |
| Handle<String> name, |
| LookupResult* lookup) { |
| holder->LocalLookupRealNamedProperty(*name, lookup); |
| if (lookup->IsProperty()) return; |
| |
| lookup->NotFound(); |
| if (holder->GetPrototype()->IsNull()) return; |
| |
| holder->GetPrototype()->Lookup(*name, lookup); |
| } |
| |
| |
| Handle<Code> LoadStubCompiler::GetCode(PropertyType type, Handle<String> name) { |
| Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, type); |
| Handle<Code> code = GetCodeWithFlags(flags, name); |
| PROFILE(isolate(), CodeCreateEvent(Logger::LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::LOAD_IC, *name, *code)); |
| return code; |
| } |
| |
| |
| Handle<Code> KeyedLoadStubCompiler::GetCode(PropertyType type, |
| Handle<String> name, |
| InlineCacheState state) { |
| Code::Flags flags = Code::ComputeFlags( |
| Code::KEYED_LOAD_IC, state, Code::kNoExtraICState, type); |
| Handle<Code> code = GetCodeWithFlags(flags, name); |
| PROFILE(isolate(), CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::LOAD_IC, *name, *code)); |
| return code; |
| } |
| |
| |
| Handle<Code> StoreStubCompiler::GetCode(PropertyType type, |
| Handle<String> name) { |
| Code::Flags flags = |
| Code::ComputeMonomorphicFlags(Code::STORE_IC, type, strict_mode_); |
| Handle<Code> code = GetCodeWithFlags(flags, name); |
| PROFILE(isolate(), CodeCreateEvent(Logger::STORE_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::STORE_IC, *name, *code)); |
| return code; |
| } |
| |
| |
| Handle<Code> KeyedStoreStubCompiler::GetCode(PropertyType type, |
| Handle<String> name, |
| InlineCacheState state) { |
| Code::ExtraICState extra_state = |
| Code::ComputeExtraICState(grow_mode_, strict_mode_); |
| Code::Flags flags = |
| Code::ComputeFlags(Code::KEYED_STORE_IC, state, extra_state, type); |
| Handle<Code> code = GetCodeWithFlags(flags, name); |
| PROFILE(isolate(), CodeCreateEvent(Logger::KEYED_STORE_IC_TAG, *code, *name)); |
| GDBJIT(AddCode(GDBJITInterface::KEYED_STORE_IC, *name, *code)); |
| return code; |
| } |
| |
| |
| void KeyedStoreStubCompiler::GenerateStoreDictionaryElement( |
| MacroAssembler* masm) { |
| KeyedStoreIC::GenerateSlow(masm); |
| } |
| |
| |
| CallStubCompiler::CallStubCompiler(Isolate* isolate, |
| int argc, |
| Code::Kind kind, |
| Code::ExtraICState extra_state, |
| InlineCacheHolderFlag cache_holder) |
| : StubCompiler(isolate), |
| arguments_(argc), |
| kind_(kind), |
| extra_state_(extra_state), |
| cache_holder_(cache_holder) { |
| } |
| |
| |
| bool CallStubCompiler::HasCustomCallGenerator(Handle<JSFunction> function) { |
| if (function->shared()->HasBuiltinFunctionId()) { |
| BuiltinFunctionId id = function->shared()->builtin_function_id(); |
| #define CALL_GENERATOR_CASE(name) if (id == k##name) return true; |
| CUSTOM_CALL_IC_GENERATORS(CALL_GENERATOR_CASE) |
| #undef CALL_GENERATOR_CASE |
| } |
| |
| CallOptimization optimization(function); |
| return optimization.is_simple_api_call(); |
| } |
| |
| |
| Handle<Code> CallStubCompiler::CompileCustomCall( |
| Handle<Object> object, |
| Handle<JSObject> holder, |
| Handle<JSGlobalPropertyCell> cell, |
| Handle<JSFunction> function, |
| Handle<String> fname) { |
| ASSERT(HasCustomCallGenerator(function)); |
| |
| if (function->shared()->HasBuiltinFunctionId()) { |
| BuiltinFunctionId id = function->shared()->builtin_function_id(); |
| #define CALL_GENERATOR_CASE(name) \ |
| if (id == k##name) { \ |
| return CallStubCompiler::Compile##name##Call(object, \ |
| holder, \ |
| cell, \ |
| function, \ |
| fname); \ |
| } |
| CUSTOM_CALL_IC_GENERATORS(CALL_GENERATOR_CASE) |
| #undef CALL_GENERATOR_CASE |
| } |
| CallOptimization optimization(function); |
| ASSERT(optimization.is_simple_api_call()); |
| return CompileFastApiCall(optimization, |
| object, |
| holder, |
| cell, |
| function, |
| fname); |
| } |
| |
| |
| Handle<Code> CallStubCompiler::GetCode(PropertyType type, Handle<String> name) { |
| int argc = arguments_.immediate(); |
| Code::Flags flags = Code::ComputeMonomorphicFlags(kind_, |
| type, |
| extra_state_, |
| cache_holder_, |
| argc); |
| return GetCodeWithFlags(flags, name); |
| } |
| |
| |
| Handle<Code> CallStubCompiler::GetCode(Handle<JSFunction> function) { |
| Handle<String> function_name; |
| if (function->shared()->name()->IsString()) { |
| function_name = Handle<String>(String::cast(function->shared()->name())); |
| } |
| return GetCode(CONSTANT_FUNCTION, function_name); |
| } |
| |
| |
| Handle<Code> ConstructStubCompiler::GetCode() { |
| Code::Flags flags = Code::ComputeFlags(Code::STUB); |
| Handle<Code> code = GetCodeWithFlags(flags, "ConstructStub"); |
| PROFILE(isolate(), CodeCreateEvent(Logger::STUB_TAG, *code, "ConstructStub")); |
| GDBJIT(AddCode(GDBJITInterface::STUB, "ConstructStub", *code)); |
| return code; |
| } |
| |
| |
| CallOptimization::CallOptimization(LookupResult* lookup) { |
| if (lookup->IsFound() && |
| lookup->IsCacheable() && |
| lookup->type() == CONSTANT_FUNCTION) { |
| // We only optimize constant function calls. |
| Initialize(Handle<JSFunction>(lookup->GetConstantFunction())); |
| } else { |
| Initialize(Handle<JSFunction>::null()); |
| } |
| } |
| |
| CallOptimization::CallOptimization(Handle<JSFunction> function) { |
| Initialize(function); |
| } |
| |
| |
| int CallOptimization::GetPrototypeDepthOfExpectedType( |
| Handle<JSObject> object, |
| Handle<JSObject> holder) const { |
| ASSERT(is_simple_api_call()); |
| if (expected_receiver_type_.is_null()) return 0; |
| int depth = 0; |
| while (!object.is_identical_to(holder)) { |
| if (object->IsInstanceOf(*expected_receiver_type_)) return depth; |
| object = Handle<JSObject>(JSObject::cast(object->GetPrototype())); |
| ++depth; |
| } |
| if (holder->IsInstanceOf(*expected_receiver_type_)) return depth; |
| return kInvalidProtoDepth; |
| } |
| |
| |
| void CallOptimization::Initialize(Handle<JSFunction> function) { |
| constant_function_ = Handle<JSFunction>::null(); |
| is_simple_api_call_ = false; |
| expected_receiver_type_ = Handle<FunctionTemplateInfo>::null(); |
| api_call_info_ = Handle<CallHandlerInfo>::null(); |
| |
| if (function.is_null() || !function->is_compiled()) return; |
| |
| constant_function_ = function; |
| AnalyzePossibleApiFunction(function); |
| } |
| |
| |
| void CallOptimization::AnalyzePossibleApiFunction(Handle<JSFunction> function) { |
| if (!function->shared()->IsApiFunction()) return; |
| Handle<FunctionTemplateInfo> info(function->shared()->get_api_func_data()); |
| |
| // Require a C++ callback. |
| if (info->call_code()->IsUndefined()) return; |
| api_call_info_ = |
| Handle<CallHandlerInfo>(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()) { |
| Handle<SignatureInfo> signature = |
| Handle<SignatureInfo>(SignatureInfo::cast(info->signature())); |
| if (!signature->args()->IsUndefined()) return; |
| if (!signature->receiver()->IsUndefined()) { |
| expected_receiver_type_ = |
| Handle<FunctionTemplateInfo>( |
| FunctionTemplateInfo::cast(signature->receiver())); |
| } |
| } |
| |
| is_simple_api_call_ = true; |
| } |
| |
| |
| } } // namespace v8::internal |
