[builtins] Improve performance of array.prototype.filter and map

src/bootstrapper.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/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/base/ieee754.h"
 #include "src/code-stubs.h"
@@ skipping 3846 matching lines @@
   Handle<Object> function = Object::GetProperty(&it).ToHandleChecked();
   Handle<JSFunction>::cast(function)->set_code(
       isolate()->builtins()->builtin(builtin_name));
   Handle<JSFunction>::cast(function)->shared()->set_code(
       isolate()->builtins()->builtin(builtin_name));
 }
 
 void Genesis::InitializeGlobal_experimental_fast_array_builtins() {
   if (!FLAG_experimental_fast_array_builtins) return;
   {
-    Handle<JSFunction> array_constructor(native_context()->array_function());
-    Handle<Object> array_prototype(array_constructor->prototype(), isolate());
-    // Insert experimental fast Array builtins here.
-    InstallOneBuiltinFunction(array_prototype, "filter",
-                              Builtins::kArrayFilter);
-    InstallOneBuiltinFunction(array_prototype, "map", Builtins::kArrayMap);
-  }
-  {
     Handle<Object> typed_array_prototype(
         native_context()->typed_array_prototype(), isolate());
     // Insert experimental fast TypedArray builtins here.
     InstallOneBuiltinFunction(typed_array_prototype, "every",
                               Builtins::kTypedArrayPrototypeEvery);
     InstallOneBuiltinFunction(typed_array_prototype, "some",
                               Builtins::kTypedArrayPrototypeSome);
   }
 }
 
@@ skipping 478 matching lines @@
     DCHECK(concat->is_compiled());
     // Set the lengths for the functions to satisfy ECMA-262.
     concat->shared()->set_length(1);
 
     // Install Array.prototype.forEach
     Handle<JSFunction> forEach = InstallArrayBuiltinFunction(
         proto, "forEach", Builtins::kArrayForEach, 2);
     // Add forEach to the context.
     native_context()->set_array_for_each_iterator(*forEach);
 
+    // Install Array.prototype.filter
+    InstallArrayBuiltinFunction(proto, "filter", Builtins::kArrayFilter, 2);
+
+    // Install Array.prototype.map
+    InstallArrayBuiltinFunction(proto, "map", Builtins::kArrayMap, 2);
+
     // Install Array.prototype.every
     InstallArrayBuiltinFunction(proto, "every", Builtins::kArrayEvery, 2);
 
     // Install Array.prototype.some
     InstallArrayBuiltinFunction(proto, "some", Builtins::kArraySome, 2);
 
     // Install Array.prototype.reduce
     InstallArrayBuiltinFunction(proto, "reduce", Builtins::kArrayReduce, 2);
 
     // Install Array.prototype.reduceRight
@@ skipping 898 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8