604824 - Make eval("g()") faster

Status: NEW

(Core :: JavaScript Engine, defect)

Description

[David Mandelin [:dmandelin]]

Make the microbenchmark below faster. It is taken from tofte and does roughly the same kind of eval usage, the same number of times. Note that in tofte, 11 different functions are called, so the eval cache may or may not be the thing here.

This seems to be costing us 3 ms on SunSpider relative to V8 in the shell, and 4 ms in the browser.

    function g() {
	return 33;
    }

    function f() {
	var t0 = new Date;
	for (var i = 0; i < 55000; ++i) {
	    eval("g()");
	}
	print(new Date - t0);
    }

    f();