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Checking arguments.length slow
See original GitHub issueChecking arguments.length slow with Chakra. Here is sample page:
<html>
<body>
<script>
var start = Date.now();
function one(a){
}
function two(a,b){
}
function route(a,b){
switch (arguments.length) {
case 1:
return one(a);
case 2:
return two(a,b);
}
}
for (var i = 0; i<1000000; i++) {
route(1,2);
}
document.write(Date.now() - start);
</script>
</body>
</html>
My results:
- Edge: ~380ms
- Chrome: ~20ms
- Firefox: ~3ms
Issue Analytics
- State:
- Created 7 years ago
- Comments:14 (8 by maintainers)
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This issue will be fixed in https://github.com/Microsoft/ChakraCore/pull/1023. This is a WIP item. strict and non-strict mode should be taken care with this change.
Thanks!