876398 - BaselineCompiler: IonMonkey: Compile JSOP_POPN

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Jan de Mooij [:jandem]]

Attachment: Patch

Pretty straight-forward. For the group assignment micro-benchmark below, just for fun:

before   : 27008 ms
after    :   160 ms

--no-ion :  1310 ms

function f() {	
    var t = 0;
    for (var j = 0; j < 10000000; j++) {
	for (var i = 0; i < 9; ++i) {
            var [r, g, b] = [1, i, 2];
            t += r + g + b;
	}
    }
    return t
}
f();

Comment 1

[Jan de Mooij [:jandem]]

https://hg.mozilla.org/integration/mozilla-inbound/rev/66abdc9b3811

Comment 2

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/66abdc9b3811