[refactor] Separate generated builtins and C++ builtins into separate files

src/builtins/builtins-object-gen.cc

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/builtins/builtins-utils-gen.h"
+#include "src/builtins/builtins.h"
+#include "src/code-stub-assembler.h"
+
+namespace v8 {
+namespace internal {
+
+// -----------------------------------------------------------------------------
+// ES6 section 19.1 Object Objects
+
+typedef compiler::Node Node;
+
+class ObjectBuiltinsAssembler : public CodeStubAssembler {
+ public:
+  explicit ObjectBuiltinsAssembler(compiler::CodeAssemblerState* state)
+      : CodeStubAssembler(state) {}
+
+ protected:
+  void IsString(Node* object, Label* if_string, Label* if_notstring);
+  void ReturnToStringFormat(Node* context, Node* string);
+};
+
+void ObjectBuiltinsAssembler::IsString(Node* object, Label* if_string,
+                                       Label* if_notstring) {
+  Label if_notsmi(this);
+  Branch(TaggedIsSmi(object), if_notstring, &if_notsmi);
+
+  Bind(&if_notsmi);
+  {
+    Node* instance_type = LoadInstanceType(object);
+
+    Branch(IsStringInstanceType(instance_type), if_string, if_notstring);
+  }
+}
+
+void ObjectBuiltinsAssembler::ReturnToStringFormat(Node* context,
+                                                   Node* string) {
+  Node* lhs = HeapConstant(factory()->NewStringFromStaticChars("[object "));
+  Node* rhs = HeapConstant(factory()->NewStringFromStaticChars("]"));
+
+  Callable callable =
+      CodeFactory::StringAdd(isolate(), STRING_ADD_CHECK_NONE, NOT_TENURED);
+
+  Return(CallStub(callable, context, CallStub(callable, context, lhs, string),
+                  rhs));
+}
+
+TF_BUILTIN(ObjectHasOwnProperty, ObjectBuiltinsAssembler) {
+  Node* object = Parameter(0);
+  Node* key = Parameter(1);
+  Node* context = Parameter(4);
+
+  Label call_runtime(this), return_true(this), return_false(this);
+
+  // Smi receivers do not have own properties.
+  Label if_objectisnotsmi(this);
+  Branch(TaggedIsSmi(object), &return_false, &if_objectisnotsmi);
+  Bind(&if_objectisnotsmi);
+
+  Node* map = LoadMap(object);
+  Node* instance_type = LoadMapInstanceType(map);
+
+  {
+    Variable var_index(this, MachineType::PointerRepresentation());
+    Variable var_unique(this, MachineRepresentation::kTagged);
+
+    Label keyisindex(this), if_iskeyunique(this);
+    TryToName(key, &keyisindex, &var_index, &if_iskeyunique, &var_unique,
+              &call_runtime);
+
+    Bind(&if_iskeyunique);
+    TryHasOwnProperty(object, map, instance_type, var_unique.value(),
+                      &return_true, &return_false, &call_runtime);
+
+    Bind(&keyisindex);
+    // Handle negative keys in the runtime.
+    GotoIf(IntPtrLessThan(var_index.value(), IntPtrConstant(0)), &call_runtime);
+    TryLookupElement(object, map, instance_type, var_index.value(),
+                     &return_true, &return_false, &call_runtime);
+  }
+  Bind(&return_true);
+  Return(BooleanConstant(true));
+
+  Bind(&return_false);
+  Return(BooleanConstant(false));
+
+  Bind(&call_runtime);
+  Return(CallRuntime(Runtime::kObjectHasOwnProperty, context, object, key));
+}
+
+// ES6 section 19.1.3.6 Object.prototype.toString
+TF_BUILTIN(ObjectProtoToString, ObjectBuiltinsAssembler) {
+  Label return_undefined(this, Label::kDeferred),
+      return_null(this, Label::kDeferred),
+      return_arguments(this, Label::kDeferred), return_array(this),
+      return_api(this, Label::kDeferred), return_object(this),
+      return_regexp(this), return_function(this), return_error(this),
+      return_date(this), return_jsvalue(this),
+      return_jsproxy(this, Label::kDeferred);
+
+  Label if_isproxy(this, Label::kDeferred);
+
+  Label checkstringtag(this);
+  Label if_tostringtag(this), if_notostringtag(this);
+
+  Node* receiver = Parameter(0);
+  Node* context = Parameter(3);
+
+  GotoIf(WordEqual(receiver, UndefinedConstant()), &return_undefined);
+
+  GotoIf(WordEqual(receiver, NullConstant()), &return_null);
+
+  Callable to_object = CodeFactory::ToObject(isolate());
+  receiver = CallStub(to_object, context, receiver);
+
+  Node* receiver_instance_type = LoadInstanceType(receiver);
+
+  // for proxies, check IsArray before getting @@toStringTag
+  Variable var_proxy_is_array(this, MachineRepresentation::kTagged);
+  var_proxy_is_array.Bind(BooleanConstant(false));
+
+  Branch(Word32Equal(receiver_instance_type, Int32Constant(JS_PROXY_TYPE)),
+         &if_isproxy, &checkstringtag);
+
+  Bind(&if_isproxy);
+  {
+    // This can throw
+    var_proxy_is_array.Bind(
+        CallRuntime(Runtime::kArrayIsArray, context, receiver));
+    Goto(&checkstringtag);
+  }
+
+  Bind(&checkstringtag);
+  {
+    Node* to_string_tag_symbol =
+        HeapConstant(isolate()->factory()->to_string_tag_symbol());
+
+    GetPropertyStub stub(isolate());
+    Callable get_property =
+        Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+    Node* to_string_tag_value =
+        CallStub(get_property, context, receiver, to_string_tag_symbol);
+
+    IsString(to_string_tag_value, &if_tostringtag, &if_notostringtag);
+
+    Bind(&if_tostringtag);
+    ReturnToStringFormat(context, to_string_tag_value);
+  }
+  Bind(&if_notostringtag);
+  {
+    size_t const kNumCases = 11;
+    Label* case_labels[kNumCases];
+    int32_t case_values[kNumCases];
+    case_labels[0] = &return_api;
+    case_values[0] = JS_API_OBJECT_TYPE;
+    case_labels[1] = &return_api;
+    case_values[1] = JS_SPECIAL_API_OBJECT_TYPE;
+    case_labels[2] = &return_arguments;
+    case_values[2] = JS_ARGUMENTS_TYPE;
+    case_labels[3] = &return_array;
+    case_values[3] = JS_ARRAY_TYPE;
+    case_labels[4] = &return_function;
+    case_values[4] = JS_BOUND_FUNCTION_TYPE;
+    case_labels[5] = &return_function;
+    case_values[5] = JS_FUNCTION_TYPE;
+    case_labels[6] = &return_error;
+    case_values[6] = JS_ERROR_TYPE;
+    case_labels[7] = &return_date;
+    case_values[7] = JS_DATE_TYPE;
+    case_labels[8] = &return_regexp;
+    case_values[8] = JS_REGEXP_TYPE;
+    case_labels[9] = &return_jsvalue;
+    case_values[9] = JS_VALUE_TYPE;
+    case_labels[10] = &return_jsproxy;
+    case_values[10] = JS_PROXY_TYPE;
+
+    Switch(receiver_instance_type, &return_object, case_values, case_labels,
+           arraysize(case_values));
+
+    Bind(&return_undefined);
+    Return(HeapConstant(isolate()->factory()->undefined_to_string()));
+
+    Bind(&return_null);
+    Return(HeapConstant(isolate()->factory()->null_to_string()));
+
+    Bind(&return_arguments);
+    Return(HeapConstant(isolate()->factory()->arguments_to_string()));
+
+    Bind(&return_array);
+    Return(HeapConstant(isolate()->factory()->array_to_string()));
+
+    Bind(&return_function);
+    Return(HeapConstant(isolate()->factory()->function_to_string()));
+
+    Bind(&return_error);
+    Return(HeapConstant(isolate()->factory()->error_to_string()));
+
+    Bind(&return_date);
+    Return(HeapConstant(isolate()->factory()->date_to_string()));
+
+    Bind(&return_regexp);
+    Return(HeapConstant(isolate()->factory()->regexp_to_string()));
+
+    Bind(&return_api);
+    {
+      Node* class_name = CallRuntime(Runtime::kClassOf, context, receiver);
+      ReturnToStringFormat(context, class_name);
+    }
+
+    Bind(&return_jsvalue);
+    {
+      Label return_boolean(this), return_number(this), return_string(this);
+
+      Node* value = LoadJSValueValue(receiver);
+      GotoIf(TaggedIsSmi(value), &return_number);
+      Node* instance_type = LoadInstanceType(value);
+
+      GotoIf(IsStringInstanceType(instance_type), &return_string);
+      GotoIf(Word32Equal(instance_type, Int32Constant(HEAP_NUMBER_TYPE)),
+             &return_number);
+      GotoIf(Word32Equal(instance_type, Int32Constant(ODDBALL_TYPE)),
+             &return_boolean);
+
+      CSA_ASSERT(this, Word32Equal(instance_type, Int32Constant(SYMBOL_TYPE)));
+      Goto(&return_object);
+
+      Bind(&return_string);
+      Return(HeapConstant(isolate()->factory()->string_to_string()));
+
+      Bind(&return_number);
+      Return(HeapConstant(isolate()->factory()->number_to_string()));
+
+      Bind(&return_boolean);
+      Return(HeapConstant(isolate()->factory()->boolean_to_string()));
+    }
+
+    Bind(&return_jsproxy);
+    {
+      GotoIf(WordEqual(var_proxy_is_array.value(), BooleanConstant(true)),
+             &return_array);
+
+      Node* map = LoadMap(receiver);
+
+      // Return object if the proxy {receiver} is not callable.
+      Branch(IsCallableMap(map), &return_function, &return_object);
+    }
+
+    // Default
+    Bind(&return_object);
+    Return(HeapConstant(isolate()->factory()->object_to_string()));
+  }
+}
+
+// ES6 19.3.7 Object.prototype.valueOf
+TF_BUILTIN(ObjectPrototypeValueOf, CodeStubAssembler) {
+  Node* receiver = Parameter(0);
+  Node* context = Parameter(3);
+
+  Callable to_object = CodeFactory::ToObject(isolate());
+  receiver = CallStub(to_object, context, receiver);
+
+  Return(receiver);
+}
+
+TF_BUILTIN(ObjectCreate, ObjectBuiltinsAssembler) {
+  Node* prototype = Parameter(1);
+  Node* properties = Parameter(2);
+  Node* context = Parameter(3 + 2);
+
+  Label call_runtime(this, Label::kDeferred), prototype_valid(this),
+      no_properties(this);
+  {
+    Comment("Argument 1 check: prototype");
+    GotoIf(WordEqual(prototype, NullConstant()), &prototype_valid);
+    BranchIfJSReceiver(prototype, &prototype_valid, &call_runtime);
+  }
+
+  Bind(&prototype_valid);
+  {
+    Comment("Argument 2 check: properties");
+    // Check that we have a simple object
+    GotoIf(TaggedIsSmi(properties), &call_runtime);
+    // Undefined implies no properties.
+    GotoIf(WordEqual(properties, UndefinedConstant()), &no_properties);
+    Node* properties_map = LoadMap(properties);
+    GotoIf(IsSpecialReceiverMap(properties_map), &call_runtime);
+    // Stay on the fast path only if there are no elements.
+    GotoIfNot(WordEqual(LoadElements(properties),
+                        LoadRoot(Heap::kEmptyFixedArrayRootIndex)),
+              &call_runtime);
+    // Handle dictionary objects or fast objects with properties in runtime.
+    Node* bit_field3 = LoadMapBitField3(properties_map);
+    GotoIf(IsSetWord32<Map::DictionaryMap>(bit_field3), &call_runtime);
+    Branch(IsSetWord32<Map::NumberOfOwnDescriptorsBits>(bit_field3),
+           &call_runtime, &no_properties);
+  }
+
+  // Create a new object with the given prototype.
+  Bind(&no_properties);
+  {
+    Variable map(this, MachineRepresentation::kTagged);
+    Variable properties(this, MachineRepresentation::kTagged);
+    Label non_null_proto(this), instantiate_map(this), good(this);
+
+    Branch(WordEqual(prototype, NullConstant()), &good, &non_null_proto);
+
+    Bind(&good);
+    {
+      map.Bind(LoadContextElement(
+          context, Context::SLOW_OBJECT_WITH_NULL_PROTOTYPE_MAP));
+      properties.Bind(AllocateNameDictionary(NameDictionary::kInitialCapacity));
+      Goto(&instantiate_map);
+    }
+
+    Bind(&non_null_proto);
+    {
+      properties.Bind(EmptyFixedArrayConstant());
+      Node* object_function =
+          LoadContextElement(context, Context::OBJECT_FUNCTION_INDEX);
+      Node* object_function_map = LoadObjectField(
+          object_function, JSFunction::kPrototypeOrInitialMapOffset);
+      map.Bind(object_function_map);
+      GotoIf(WordEqual(prototype, LoadMapPrototype(map.value())),
+             &instantiate_map);
+      // Try loading the prototype info.
+      Node* prototype_info =
+          LoadMapPrototypeInfo(LoadMap(prototype), &call_runtime);
+      Comment("Load ObjectCreateMap from PrototypeInfo");
+      Node* weak_cell =
+          LoadObjectField(prototype_info, PrototypeInfo::kObjectCreateMap);
+      GotoIf(WordEqual(weak_cell, UndefinedConstant()), &call_runtime);
+      map.Bind(LoadWeakCellValue(weak_cell, &call_runtime));
+      Goto(&instantiate_map);
+    }
+
+    Bind(&instantiate_map);
+    {
+      Node* instance = AllocateJSObjectFromMap(map.value(), properties.value());
+      Return(instance);
+    }
+  }
+
+  Bind(&call_runtime);
+  {
+    Return(CallRuntime(Runtime::kObjectCreate, context, prototype, properties));
+  }
+}
+
+TF_BUILTIN(CreateIterResultObject, ObjectBuiltinsAssembler) {
+  typedef CreateIterResultObjectDescriptor Descriptor;
+
+  Node* const value = Parameter(Descriptor::kValue);
+  Node* const done = Parameter(Descriptor::kDone);
+  Node* const context = Parameter(Descriptor::kContext);
+
+  Node* const native_context = LoadNativeContext(context);
+  Node* const map =
+      LoadContextElement(native_context, Context::ITERATOR_RESULT_MAP_INDEX);
+
+  Node* const result = AllocateJSObjectFromMap(map);
+
+  StoreObjectFieldNoWriteBarrier(result, JSIteratorResult::kValueOffset, value);
+  StoreObjectFieldNoWriteBarrier(result, JSIteratorResult::kDoneOffset, done);
+
+  Return(result);
+}
+
+TF_BUILTIN(HasProperty, ObjectBuiltinsAssembler) {
+  typedef HasPropertyDescriptor Descriptor;
+
+  Node* key = Parameter(Descriptor::kKey);
+  Node* object = Parameter(Descriptor::kObject);
+  Node* context = Parameter(Descriptor::kContext);
+
+  Return(HasProperty(object, key, context, Runtime::kHasProperty));
+}
+
+TF_BUILTIN(InstanceOf, ObjectBuiltinsAssembler) {
+  typedef CompareDescriptor Descriptor;
+
+  Node* object = Parameter(Descriptor::kLeft);
+  Node* callable = Parameter(Descriptor::kRight);
+  Node* context = Parameter(Descriptor::kContext);
+
+  Return(InstanceOf(object, callable, context));
+}
+
+// ES6 section 7.3.19 OrdinaryHasInstance ( C, O )
+TF_BUILTIN(OrdinaryHasInstance, ObjectBuiltinsAssembler) {
+  typedef CompareDescriptor Descriptor;
+
+  Node* constructor = Parameter(Descriptor::kLeft);
+  Node* object = Parameter(Descriptor::kRight);
+  Node* context = Parameter(Descriptor::kContext);
+
+  Return(OrdinaryHasInstance(context, constructor, object));
+}
+
+TF_BUILTIN(GetSuperConstructor, ObjectBuiltinsAssembler) {
+  typedef TypeofDescriptor Descriptor;
+
+  Node* object = Parameter(Descriptor::kObject);
+  Node* context = Parameter(Descriptor::kContext);
+
+  Return(GetSuperConstructor(object, context));
+}
+
+}  // namespace internal
+}  // namespace v8