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Fast path for writing a double into an array (511737, r=danderson).

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This commit is contained in:
Andreas Gal
2009-08-20 16:53:10 -07:00
parent 16f97534b5
commit 2149f042b7
3 changed files with 29 additions and 3 deletions
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19
js/src/jsarray.cpp
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@@ -955,6 +955,25 @@ js_Array_dense_setelem_int(JSContext* cx, JSObject* obj, jsint i, int32 j)
return dense_grow(cx, obj, i, v);
}
JS_DEFINE_CALLINFO_4(extern, BOOL, js_Array_dense_setelem_int, CONTEXT, OBJECT, INT32, INT32, 0, 0)
JSBool FASTCALL
js_Array_dense_setelem_double(JSContext* cx, JSObject* obj, jsint i, jsdouble d)
{
JS_ASSERT(OBJ_IS_DENSE_ARRAY(cx, obj));
jsval v;
jsint j;
if (JS_LIKELY(JSDOUBLE_IS_INT(d, j) && INT_FITS_IN_JSVAL(j))) {
v = INT_TO_JSVAL(j);
} else {
if (!js_NewDoubleInRootedValue(cx, d, &v))
return JS_FALSE;
}
return dense_grow(cx, obj, i, v);
}
JS_DEFINE_CALLINFO_4(extern, BOOL, js_Array_dense_setelem_double, CONTEXT, OBJECT, INT32, DOUBLE, 0, 0)
#endif
static JSBool