ElementsKind elements_kind = receiver_map->elements_kind();
if (!IsFastElementsKind(elements_kind)) return false;
if (receiver_map->is_observed()) return false;
- DCHECK(receiver_map->is_extensible());
+ if (!receiver_map->is_extensible()) return false;
Drop(expr->arguments()->length());
HValue* result;
if (!IsFastElementsKind(elements_kind)) return false;
if (receiver_map->is_observed()) return false;
if (JSArray::IsReadOnlyLengthDescriptor(receiver_map)) return false;
- DCHECK(receiver_map->is_extensible());
+ if (!receiver_map->is_extensible()) return false;
// If there may be elements accessors in the prototype chain, the fast
// inlined version can't be used.
if (!IsFastElementsKind(kind)) return false;
if (receiver_map->is_observed()) return false;
if (argument_count != 2) return false;
- DCHECK(receiver_map->is_extensible());
+ if (!receiver_map->is_extensible()) return false;
// If there may be elements accessors in the prototype chain, the fast
// inlined version can't be used.
--- /dev/null
+// 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.
+
+// Flags: --allow-natives-syntax
+
+function __f_6() {
+ var __v_7 = [0];
+ %PreventExtensions(__v_7);
+ for (var __v_6 = -2; __v_6 < 19; __v_6++) __v_7.shift();
+ __f_7(__v_7);
+}
+__f_6();
+__f_6();
+%OptimizeFunctionOnNextCall(__f_6);
+__f_6();
+function __f_7(__v_7) {
+ __v_7.push(Infinity);
+}