http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55461
Andi Kleen <andi-gcc at firstfloor dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |WONTFIX
--- Comment #4 from Andi Kleen <andi-gcc at firstfloor dot org> 2012-11-25
19:15:36 UTC ---
Ok fair enough. Yes -O2 seems to DTRT.
The penalty for doing this can be large on some older CPUs of course.
I chose -Os because -O2 made a mess out of the loop.
Just one more on my list to avoid -Os.
