Run results for: Direct access to property vs Getter/Setter

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0

Browser: Firefox 110

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Read directly from prop	1533605504.0 Ops/sec
Set directly to prop	1072833792.0 Ops/sec
Read from getter	1526609792.0 Ops/sec
Set to setter	1037035584.0 Ops/sec

Script Preparation code:

class MyObj {
	prop = undefined

	get propAccessor() {
		return this.prop;
	}

	set propAccessor(val) {
		this.prop = val;
	}
}

var obj = new MyObj();

Tests:

Read directly from prop
var value = obj.prop;
Set directly to prop
obj.prop = 123;
Read from getter
var value = obj.propAccessor;
Set to setter
obj.propAccessor = 123;

Run results for: Direct access to property vs Getter/Setter

Read directly from prop

Set directly to prop

Read from getter

Set to setter