Pretenure builtin typed arrays.

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/conversions.h"
@@ skipping 1608 matching lines @@
   JSFunction::EnsureHasInitialMap(function);
   Handle<Map> map(function->initial_map());
   DCHECK(map->instance_type() == JS_GENERATOR_OBJECT_TYPE);
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateJSObjectFromMap(*map),
       JSGeneratorObject);
 }
 
 
-Handle<JSArrayBuffer> Factory::NewJSArrayBuffer(SharedFlag shared) {
+Handle<JSArrayBuffer> Factory::NewJSArrayBuffer(SharedFlag shared,
+                                                PretenureFlag pretenure) {
   Handle<JSFunction> array_buffer_fun(
       shared == SharedFlag::kShared
           ? isolate()->native_context()->shared_array_buffer_fun()
           : isolate()->native_context()->array_buffer_fun());
-  CALL_HEAP_FUNCTION(
-      isolate(),
-      isolate()->heap()->AllocateJSObject(*array_buffer_fun),
-      JSArrayBuffer);
+  CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateJSObject(
+                                    *array_buffer_fun, pretenure),
+                     JSArrayBuffer);
 }
 
 
 Handle<JSDataView> Factory::NewJSDataView() {
   Handle<JSFunction> data_view_fun(
       isolate()->native_context()->data_view_fun());
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateJSObject(*data_view_fun),
       JSDataView);
@@ skipping 129 matching lines @@
     default:
       UNREACHABLE();
       return NULL;
   }
 }
 
 
 void SetupArrayBufferView(i::Isolate* isolate,
                           i::Handle<i::JSArrayBufferView> obj,
                           i::Handle<i::JSArrayBuffer> buffer,
-                          size_t byte_offset, size_t byte_length) {
+                          size_t byte_offset, size_t byte_length,
+                          PretenureFlag pretenure = NOT_TENURED) {
   DCHECK(byte_offset + byte_length <=
          static_cast<size_t>(buffer->byte_length()->Number()));
 
   obj->set_buffer(*buffer);
 
   i::Handle<i::Object> byte_offset_object =
-      isolate->factory()->NewNumberFromSize(byte_offset);
+      isolate->factory()->NewNumberFromSize(byte_offset, pretenure);
   obj->set_byte_offset(*byte_offset_object);
 
   i::Handle<i::Object> byte_length_object =
-      isolate->factory()->NewNumberFromSize(byte_length);
+      isolate->factory()->NewNumberFromSize(byte_length, pretenure);
   obj->set_byte_length(*byte_length_object);
 }
 
 
 }  // namespace
 
 
-Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type) {
+Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type,
+                                              PretenureFlag pretenure) {
   Handle<JSFunction> typed_array_fun_handle(GetTypedArrayFun(type, isolate()));
 
-  CALL_HEAP_FUNCTION(
-      isolate(),
-      isolate()->heap()->AllocateJSObject(*typed_array_fun_handle),
-      JSTypedArray);
+  CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateJSObject(
+                                    *typed_array_fun_handle, pretenure),
+                     JSTypedArray);
 }
 
 
-Handle<JSTypedArray> Factory::NewJSTypedArray(ElementsKind elements_kind) {
+Handle<JSTypedArray> Factory::NewJSTypedArray(ElementsKind elements_kind,
+                                              PretenureFlag pretenure) {
   Handle<JSFunction> typed_array_fun_handle(
       GetTypedArrayFun(elements_kind, isolate()));
 
-  CALL_HEAP_FUNCTION(
-      isolate(), isolate()->heap()->AllocateJSObject(*typed_array_fun_handle),
-      JSTypedArray);
+  CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateJSObject(
+                                    *typed_array_fun_handle, pretenure),
+                     JSTypedArray);
 }
 
 
 Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type,
                                               Handle<JSArrayBuffer> buffer,
-                                              size_t byte_offset,
-                                              size_t length) {
-  Handle<JSTypedArray> obj = NewJSTypedArray(type);
+                                              size_t byte_offset, size_t length,
+                                              PretenureFlag pretenure) {
+  Handle<JSTypedArray> obj = NewJSTypedArray(type, pretenure);
 
   size_t element_size = GetExternalArrayElementSize(type);
   ElementsKind elements_kind = GetExternalArrayElementsKind(type);
 
   CHECK(byte_offset % element_size == 0);
 
   CHECK(length <= (std::numeric_limits<size_t>::max() / element_size));
   CHECK(length <= static_cast<size_t>(Smi::kMaxValue));
   size_t byte_length = length * element_size;
-  SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length);
+  SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length,
+                       pretenure);
 
-  Handle<Object> length_object = NewNumberFromSize(length);
+  Handle<Object> length_object = NewNumberFromSize(length, pretenure);
   obj->set_length(*length_object);
 
   Handle<FixedTypedArrayBase> elements = NewFixedTypedArrayWithExternalPointer(
       static_cast<int>(length), type,
-      static_cast<uint8_t*>(buffer->backing_store()) + byte_offset);
+      static_cast<uint8_t*>(buffer->backing_store()) + byte_offset, pretenure);
   Handle<Map> map = JSObject::GetElementsTransitionMap(obj, elements_kind);
   JSObject::SetMapAndElements(obj, map, elements);
   return obj;
 }
 
 
 Handle<JSTypedArray> Factory::NewJSTypedArray(ElementsKind elements_kind,
-                                              size_t number_of_elements) {
-  Handle<JSTypedArray> obj = NewJSTypedArray(elements_kind);
+                                              size_t number_of_elements,
+                                              PretenureFlag pretenure) {
+  Handle<JSTypedArray> obj = NewJSTypedArray(elements_kind, pretenure);
 
   size_t element_size = GetFixedTypedArraysElementSize(elements_kind);
   ExternalArrayType array_type = GetArrayTypeFromElementsKind(elements_kind);
 
   CHECK(number_of_elements <=
         (std::numeric_limits<size_t>::max() / element_size));
   CHECK(number_of_elements <= static_cast<size_t>(Smi::kMaxValue));
   size_t byte_length = number_of_elements * element_size;
 
   obj->set_byte_offset(Smi::FromInt(0));
   i::Handle<i::Object> byte_length_object =
-      isolate()->factory()->NewNumberFromSize(byte_length);
+      NewNumberFromSize(byte_length, pretenure);
   obj->set_byte_length(*byte_length_object);
-  Handle<Object> length_object = NewNumberFromSize(number_of_elements);
+  Handle<Object> length_object =
+      NewNumberFromSize(number_of_elements, pretenure);
   obj->set_length(*length_object);
 
-  Handle<JSArrayBuffer> buffer = isolate()->factory()->NewJSArrayBuffer();
+  Handle<JSArrayBuffer> buffer =
+      NewJSArrayBuffer(SharedFlag::kNotShared, pretenure);
   JSArrayBuffer::Setup(buffer, isolate(), true, NULL, byte_length,
                        SharedFlag::kNotShared);
   obj->set_buffer(*buffer);
-  Handle<FixedTypedArrayBase> elements =
-      isolate()->factory()->NewFixedTypedArray(
-          static_cast<int>(number_of_elements), array_type, true);
+  Handle<FixedTypedArrayBase> elements = NewFixedTypedArray(
+      static_cast<int>(number_of_elements), array_type, true, pretenure);
   obj->set_elements(*elements);
   return obj;
 }
 
 
 Handle<JSDataView> Factory::NewJSDataView(Handle<JSArrayBuffer> buffer,
                                           size_t byte_offset,
                                           size_t byte_length) {
   Handle<JSDataView> obj = NewJSDataView();
   SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length);
@@ skipping 471 matching lines @@
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 }  // namespace internal
 }  // namespace v8