Version 5.1.281.35 (cherry-pick)

src/builtins.cc

 // Copyright 2012 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.h"
 
 #include "src/api.h"
 #include "src/api-arguments.h"
 #include "src/api-natives.h"
 #include "src/base/once.h"
@@ skipping 644 matching lines @@
   int relative_start = 0;
   int relative_end = 0;
 
   if (receiver->IsJSArray()) {
     DisallowHeapAllocation no_gc;
     JSArray* array = JSArray::cast(*receiver);
     if (!array->HasFastElements() ||
         !IsJSArrayFastElementMovingAllowed(isolate, array) ||
         !isolate->IsArraySpeciesLookupChainIntact() ||
         // If this is a subclass of Array, then call out to JS
-        !array->map()->new_target_is_base()) {
+        !array->HasArrayPrototype(isolate)) {
       AllowHeapAllocation allow_allocation;
       return CallJsIntrinsic(isolate, isolate->array_slice(), args);
     }
     len = Smi::cast(array->length())->value();
   } else if (receiver->IsJSObject() &&
              GetSloppyArgumentsLength(isolate, Handle<JSObject>::cast(receiver),
                                       &len)) {
     DCHECK_EQ(FAST_ELEMENTS, JSObject::cast(*receiver)->GetElementsKind());
     // Array.prototype.slice(arguments, ...) is quite a common idiom
     // (notably more than 50% of invocations in Web apps).
@@ skipping 39 matching lines @@
   ElementsAccessor* accessor = object->GetElementsAccessor();
   return *accessor->Slice(object, actual_start, actual_end);
 }
 
 
 BUILTIN(ArraySplice) {
   HandleScope scope(isolate);
   Handle<Object> receiver = args.receiver();
   if (!EnsureJSArrayWithWritableFastElements(isolate, receiver, &args, 3) ||
       // If this is a subclass of Array, then call out to JS.
-      !JSArray::cast(*receiver)->map()->new_target_is_base() ||
+      !Handle<JSArray>::cast(receiver)->HasArrayPrototype(isolate) ||
       // If anything with @@species has been messed with, call out to JS.
       !isolate->IsArraySpeciesLookupChainIntact()) {
     return CallJsIntrinsic(isolate, isolate->array_splice(), args);
   }
   Handle<JSArray> array = Handle<JSArray>::cast(receiver);
   DCHECK(!array->map()->is_observed());
 
   int argument_count = args.length() - 1;
   int relative_start = 0;
   if (argument_count > 0) {
@@ skipping 4122 matching lines @@
 BUILTIN_LIST_T(DEFINE_BUILTIN_ACCESSOR_T)
 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H)
 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A)
 #undef DEFINE_BUILTIN_ACCESSOR_C
 #undef DEFINE_BUILTIN_ACCESSOR_A
 #undef DEFINE_BUILTIN_ACCESSOR_T
 #undef DEFINE_BUILTIN_ACCESSOR_H
 
 }  // namespace internal
 }  // namespace v8