Bug 1809180 Comment 3 Edit History

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Original comment by
on 
This micro-benchmark for `Array.prototype.filter` improves from ~312 ms to ~163 ms:
```js
function f() {
  var arr = Array(100).fill(123);
  var res;
  var t = new Date;
  for (var i = 0; i < 100_000; i++) {
    res = arr.filter(x => x > 100).filter(x => x > 120).filter(x => x < 0);
  }
  print(new Date - t);
  return res;
}
f();
```

And this one for `TypedArray.prototype.findIndex` from ~193 ms to ~54 ms:
```js
function f() {
  var ta = new Int32Array(100);
  ta[90] = 123;
  var res;
  var t = new Date;
  for (var i = 0; i < 100_000; i++) {
    res = ta.findIndex(x => x > 0) + ta.findIndex(x => x < 0) + ta.findIndex(x => x === 123);
  }
  print(new Date - t);
  return res;
}
f();
```
Revision 1 by
on 
This micro-benchmark for `Array.prototype.filter` improves from ~312 ms to ~163 ms:
```js
function f() {
  var arr = Array(100).fill(123);
  var res;
  var t = new Date;
  for (var i = 0; i < 100_000; i++) {
    res = arr.filter(x => x > 100).filter(x => x > 120).filter(x => x < 0);
  }
  print(new Date - t);
  return res;
}
f();
```

And this one for `%TypedArray%.prototype.findIndex` from ~193 ms to ~54 ms:
```js
function f() {
  var ta = new Int32Array(100);
  ta[90] = 123;
  var res;
  var t = new Date;
  for (var i = 0; i < 100_000; i++) {
    res = ta.findIndex(x => x > 0) + ta.findIndex(x => x < 0) + ta.findIndex(x => x === 123);
  }
  print(new Date - t);
  return res;
}
f();
```

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