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[INFER] Revert broken, pointless optimization to EnsureDenseArrayCapacity, bug 647524.

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This commit is contained in:
Brian Hackett 2011-04-03 15:56:37 -07:00
parent 51a517205d
commit 42585b287d
1 changed files with 2 additions and 11 deletions
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13
js/src/jsarray.cpp
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@ -499,20 +499,11 @@ js_EnsureDenseArrayCapacity(JSContext *cx, JSObject *obj, jsint i)
Class *origObjClasp = obj->clasp;
#endif
jsuint u = jsuint(i);
if (obj->ensureDenseArrayElements(cx, u, 1) != JSObject::ED_OK)
return false;
/*
* Write undefined to the element so the tracer doesn't see an uninitialized value
* when testing for a hole.
*/
obj->setDenseArrayElement(i, UndefinedValue());
if (u >= obj->getArrayLength())
obj->setDenseArrayLength(u + 1);
JSBool ret = (obj->ensureDenseArrayElements(cx, u, 1) == JSObject::ED_OK);
/* Partially check the CallInfo's storeAccSet is correct. */
JS_ASSERT(obj->clasp == origObjClasp);
return true;
return ret;
}
/* This function and its callees do not touch any object's .clasp field. */
JS_DEFINE_CALLINFO_3(extern, BOOL, js_EnsureDenseArrayCapacity, CONTEXT, OBJECT, INT32,