Run results for: `a += b` vs `a = a + b`

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; ONEPLUS A5000) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Mobile Safari/537.36

Browser: Chrome Mobile 84

Operating system: Android

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
a += b	437525500.0 Ops/sec
a = a + b	440096700.0 Ops/sec

Script Preparation code:

let a = 2;
let b = 2;

Tests: