--enable-methodjit
For debug spew, you can add --enable-methodjit-spew. It is enabled by default if you also specified --enable-debug.
For more information on building, see [https://developer.mozilla.org/En/SpiderMonkey/Build_Documentation#Building_SpiderMonkey_tip Building SpiderMonkey].
== Running ==
Use the -m option to run with the method jit turned on.
You can learn more about debug spew with:
JMFLAGS=help /path/to/js
= Design Discussion =