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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.127 Safari/537.36 OPR/60.3.3004.55692

Browser: Opera 60

Operating system: Linux

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
Read directly from prop	24585596.0 Ops/sec
Set directly to prop	23927744.0 Ops/sec
Read from getter	23733250.0 Ops/sec
Set to setter	23891894.0 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