Run results for: Math.imul vs. polyfill

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; SOV41) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.181 Mobile Safari/537.36

Browser: Chrome Mobile 88

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Math.imul	155.9 Ops/sec
Polyfill	204.5 Ops/sec

Script Preparation code:

var x = 0x12345678;
var y;

Tests:

Math.imul
for (var i = 0; i < 10000; ++i) { y = Math.imul(x, i); }
Polyfill
for (var i = 0; i < 10000; ++i) { y = (x & 0xffff) * i + (((x >>> 16) * (i & 0xffff)) << 16); }