Async stack capturing causes significant overlay in heavily Promise-using code. To make perf testing simpler in the shell, disable them by default and add an option for enabling them. Patch coming up.

Comment on attachment 8797612 [details] Bug 1307446 - Disable async stacks by default in the JS shell and add command line option for enabling them. https://reviewboard.mozilla.org/r/83280/#review81770

Pushed by tschneidereit@gmail.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/122e1eaf7a4c Disable async stacks by default in the JS shell and add command line option for enabling them. r=evilpie

Backed out for failing saved-stacks/async-principals.js: https://hg.mozilla.org/integration/mozilla-inbound/rev/50ba9c7b5e260a0e25beb63687ca5ef6acae8833 Push with failures: https://treeherder.mozilla.org/#/jobs?repo=mozilla-inbound&revision=122e1eaf7a4ce92249a85a6fde8df8c64859c19e Failure log: https://treeherder.mozilla.org/#/jobs?repo=mozilla-inbound&revision=122e1eaf7a4ce92249a85a6fde8df8c64859c19e [task 2016-10-04T15:37:03.791692Z] TEST-PASS | js/src/jit-test/tests/saved-stacks/asm-frames.js | Success (code 0, args "--no-baseline --no-ion") [task 2016-10-04T15:37:03.819119Z] TEST-PASS | js/src/jit-test/tests/saved-stacks/asm-frames.js | Success (code 0, args "") [task 2016-10-04T15:37:03.839864Z] /home/worker/workspace/sm-package/mozjs-52.0a1.0/js/src/jit-test/tests/saved-stacks/async.js:14:3 Error: Assertion failed: got ({}), expected null [task 2016-10-04T15:37:03.839925Z] Stack: [task 2016-10-04T15:37:03.839969Z] asyncCallback@/home/worker/workspace/sm-package/mozjs-52.0a1.0/js/src/jit-test/tests/saved-stacks/async.js:14:3 [task 2016-10-04T15:37:03.840018Z] @/home/worker/workspace/sm-package/mozjs-52.0a1.0/js/src/jit-test/tests/saved-stacks/async.js:10:1 [task 2016-10-04T15:37:03.840042Z] Exit code: 3 [task 2016-10-04T15:37:03.840064Z] FAIL - saved-stacks/async.js

Too late for firefox 52, mass-wontfix.