Run results for: void 0 vs undefined vs variable containing undefined

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:148.0) Gecko/20100101 Firefox/148.0

Browser: Firefox 148

Operating system: Linux

Device Platform: Desktop

Date tested: one month ago

Test name	Executions per second
undefined	964218944.0 Ops/sec
void 0	971742080.0 Ops/sec
constant containing undefined	965942080.0 Ops/sec

Script Preparation code:

var a = 1, u = void 0;

Tests: