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// Tests that we can reflect optimized out values.
//
// Unfortunately these tests are brittle. They depend on opaque JIT heuristics
// kicking in.
// Use gczeal 0 to keep CGC from invalidating Ion code and causing test failures.
gczeal(0);
load(libdir + "jitopts.js");
if (!jitTogglesMatch(Opts_Ion2NoOffthreadCompilation))
quit(0);
withJitOptions(Opts_Ion2NoOffthreadCompilation, function () {
var g = newGlobal({newCompartment: true});
var dbg = new Debugger;
// Note that this *depends* on CCW scripted functions being opaque to Ion
// optimization and not deoptimizing the frames below the call to toggle.
g.toggle = function toggle(d) {
if (d) {
dbg.addDebuggee(g);
var frame = dbg.getNewestFrame();
assertEq(frame.implementation, "ion");
// x is unused and should be elided.
assertEq(frame.environment.getVariable("x").optimizedOut, true);
assertEq(frame.arguments[1].optimizedOut, true);
}
};
g.eval("" + function f(d, x) {
"use strict";
eval("g(d, x)"); // `eval` to avoid inlining g.
});
g.eval("" + function g(d, x) {
"use strict";
for (var i = 0; i < 100; i++);
toggle(d);
});
g.eval("(" + function test() {
for (i = 0; i < 15; i++)
f(false, 42);
f(true, 42);
} + ")();");
});