From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- .../tests/debug/Environment-getVariable-13.js | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 js/src/jit-test/tests/debug/Environment-getVariable-13.js (limited to 'js/src/jit-test/tests/debug/Environment-getVariable-13.js') diff --git a/js/src/jit-test/tests/debug/Environment-getVariable-13.js b/js/src/jit-test/tests/debug/Environment-getVariable-13.js new file mode 100644 index 0000000000..37d5e90afc --- /dev/null +++ b/js/src/jit-test/tests/debug/Environment-getVariable-13.js @@ -0,0 +1,50 @@ +// Tests that we can use debug scopes with Ion frames. +// +// Unfortunately these tests are brittle. They depend on opaque JIT heuristics +// kicking in. + +load(libdir + "jitopts.js"); + +// GCs can invalidate JIT code and cause this test to fail. +gczeal(0); + +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"); + // g is heavyweight but its call object is optimized out, because its + // arguments and locals are unaliased. + // + // Calling frame.environment here should make a fake debug scope that + // gets things directly from the frame. Calling frame.arguments doesn't + // go through the scope object and reads directly off the frame. Assert + // that the two are equal. + assertEq(frame.environment.getVariable("x"), frame.arguments[1]); + } + }; + + g.eval("" + function f(d, x) { g(d, x); }); + g.eval("" + function g(d, x) { + for (var i = 0; i < 100; i++); + function inner() { i = 42; }; + toggle(d); + // Use x so it doesn't get optimized out. + x++; + }); + + g.eval("(" + function test() { + for (i = 0; i < 15; i++) + f(false, 42); + f(true, 42); + } + ")();"); +}); -- cgit v1.2.3