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<!doctype html>
<script src="util.js"></script>
<div id="x"></div>
<script>
/*
* Test performance of bareword lookup via the Window's named properties
* object.
*/
onload = function() {
let count = 1000000; // About 700ms
perf_start();
for (let i = count; i > 0; --i) {
// Pretty sure JITs are not smart enough to optimize out this proxy
// lookup, so no need to do anything other than perform the get.
x;
}
perf_finish();
}
</script>