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comparison: js/src/jit-test/tests/debug/optimized-out-01.js
js/src/jit-test/tests/debug/optimized-out-01.js
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- 6474c204b198
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| -1:000000000000 | 0:546a69a8f22a |
|---|---|
| 1 // Tests that we can reflect optimized out values. | |
| 2 // | |
| 3 // Unfortunately these tests are brittle. They depend on opaque JIT heuristics | |
| 4 // kicking in. | |
| 5 | |
| 6 load(libdir + "jitopts.js"); | |
| 7 | |
| 8 if (!jitTogglesMatch(Opts_Ion2NoParallelCompilation)) | |
| 9 quit(0); | |
| 10 | |
| 11 withJitOptions(Opts_Ion2NoParallelCompilation, function () { | |
| 12 var g = newGlobal(); | |
| 13 var dbg = new Debugger; | |
| 14 | |
| 15 // Note that this *depends* on CCW scripted functions being opaque to Ion | |
| 16 // optimization and not deoptimizing the frames below the call to toggle. | |
| 17 g.toggle = function toggle(d) { | |
| 18 if (d) { | |
| 19 dbg.addDebuggee(g); | |
| 20 var frame = dbg.getNewestFrame(); | |
| 21 assertEq(frame.implementation, "ion"); | |
| 22 // x is unused and should be elided. | |
| 23 assertEq(frame.environment.getVariable("x").optimizedOut, true); | |
| 24 assertEq(frame.arguments[1].optimizedOut, true); | |
| 25 } | |
| 26 }; | |
| 27 | |
| 28 g.eval("" + function f(d, x) { "use strict"; g(d, x); }); | |
| 29 | |
| 30 g.eval("" + function g(d, x) { | |
| 31 "use strict"; | |
| 32 for (var i = 0; i < 200; i++); | |
| 33 // Hack to prevent inlining. | |
| 34 function inner() { i = 42; }; | |
| 35 toggle(d); | |
| 36 }); | |
| 37 | |
| 38 g.eval("(" + function test() { | |
| 39 for (i = 0; i < 5; i++) | |
| 40 f(false, 42); | |
| 41 f(true, 42); | |
| 42 } + ")();"); | |
| 43 }); |
