http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53316
--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-11 08:56:41 UTC --- (In reply to comment #6) > A big question for -Odebug is e.g. if we should enable var-tracking for it or > not. While it is time consuming, it should improve the debug experience, > there > are various cases where -O -g is actually better debuggable than -O0 -g which > doesn't do var-tracking, e.g. with register vars, or VLAs, or during > prologues/epilogues. Well, -Odebug should aid debugging, so yes, we should enable var-tracking for it (we can throttle the limiting --params more if compile-time is going to be an issue). Of course we should evaluate the actual benefit of var-tracking for -Odebug when it materializes.
