Run results for: Passing objects with raw values vs passing new objects with raw values vs passing just raw values vs array of values 2

Updated to add 'Pass new object' & 'Pass re-created object', these reflect common real-world usage where the object contents are changing

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser: Chrome 109

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Pass object	3913479.0 Ops/sec
Pass raw values	2694551.2 Ops/sec
Pass array	3893651.5 Ops/sec
Pass new object	2704660.2 Ops/sec
Pass re-created object	1781156.5 Ops/sec

Script Preparation code:

var a = "Here's a string value";
var b = 5; // and a number
var c = false;

var object = {
  a, b, c
}

var array = [
  a, b, c
];

var passObject = (obj) => {
  return obj.a.length + obj.b * obj.c ? 2 : 1;
}

var passRawValues = (val_a, val_b, val_c) => {
  return val_a.length + val_b * val_c ? 2 : 1;
}

var passArray = (arr) => {
  return arr[0].length + arr[1] * arr[2] ? 2 : 1;
}


var x = 0;

Tests:

Pass object
x << 1; x ^= passObject(object);
Pass raw values
x << 1; x ^= passRawValues(a, b, c);
Pass array
x << 1; x ^= passArray(array);
Pass new object
x << 1; x ^= passObject({a, b, c});
Pass re-created object
object.a = a; object.b = b; object.c = c; x << 1; x ^= passObject(object);

Run results for: Passing objects with raw values vs passing new objects with raw values vs passing just raw values vs array of values 2

Updated to add 'Pass new object' & 'Pass re-created object', these reflect common real-world usage where the object contents are changing

Pass object

Pass raw values

Pass array

Pass new object

Pass re-created object