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Bug 584279 - TM: improve alias analysis by adding many more access regions. r=bhackett.

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This commit is contained in:
Nicholas Nethercote
2010-10-17 18:42:58 -07:00
parent 80c0065b8c
commit f60d3e7adc
5 changed files with 794 additions and 320 deletions
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17
js/src/jsarray.cpp
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@@ -433,6 +433,9 @@ SetArrayElement(JSContext *cx, JSObject *obj, jsdouble index, const Value &v)
JSBool JS_FASTCALL
js_EnsureDenseArrayCapacity(JSContext *cx, JSObject *obj, jsint i)
{
#ifdef DEBUG
Class *origObjClasp = obj->clasp;
#endif
jsuint u = jsuint(i);
jsuint capacity = obj->getDenseArrayCapacity();
if (u < capacity)
@@ -440,10 +443,15 @@ js_EnsureDenseArrayCapacity(JSContext *cx, JSObject *obj, jsint i)
if (INDEX_TOO_SPARSE(obj, u))
return false;
return obj->ensureDenseArrayElements(cx, u + 1);
JSBool ret = obj->ensureDenseArrayElements(cx, u + 1);
/* Partially check the CallInfo's storeAccSet is correct. */
JS_ASSERT(obj->clasp == origObjClasp);
return ret;
}
JS_DEFINE_CALLINFO_3(extern, BOOL, js_EnsureDenseArrayCapacity, CONTEXT, OBJECT, INT32, 0,
nanojit::ACCSET_STORE_ANY)
/* This function and its callees do not touch any object's .clasp field. */
JS_DEFINE_CALLINFO_3(extern, BOOL, js_EnsureDenseArrayCapacity, CONTEXT, OBJECT, INT32,
0, nanojit::ACCSET_STORE_ANY & ~ACCSET_OBJ_CLASP)
#endif
static JSBool
@@ -819,8 +827,9 @@ js_Array_dense_setelem_hole(JSContext* cx, JSObject* obj, jsint i)
obj->setArrayLength(u + 1);
return true;
}
/* storeAccSet == ACCSET_OBJ_PRIVATE: because it can set 'length'. */
JS_DEFINE_CALLINFO_3(extern, BOOL, js_Array_dense_setelem_hole, CONTEXT, OBJECT, INT32,
0, nanojit::ACCSET_STORE_ANY)
0, ACCSET_OBJ_PRIVATE)
#endif
static JSBool