Status: New
Owner: ----
New issue 627 by [email protected]: Performance issue: ArrayPush is not
called when pushing to an array from jscompiler code.
http://code.google.com/p/v8/issues/detail?id=627
Keyed load function calls do not call the special functions stored in
special_function_table. In the below case, the generic
Array.proptotype.push is executed instead of the internal ArrayPush.
Top stack frames that illustrate the problem.
CALLEE:
function push(){?var a=(this.length>>>0);?var b=%_ArgumentsLength();?
for(var c=0;c<b;c++){?this[c+a]=%_Arguments(c);?}?this.length=a+b;?return
this.length;?}
CALLER:
function vea(b,a,c){c[p](Sg,a[Cb](wea,function(d){if(d in xea)return
xea[d];var f=d[Bd](0),g=sea;if(f<16)g+=tea;else if(f<256)g+=uea;else
if(f<4096)g+=Ih;return xea[d]=g+f[t](16)}),Sg)}
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