http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43503
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c++ |rtl-optimization
Resolution| |FIXED
Target Milestone|--- |4.7.0
--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-11-06
11:37:44 UTC ---
As Andrew said - we keep the instructions so they can set the flag register,
but then figure out the conditional jump is unnecessary. On the trunk at -O2
we figure that out via tail-merging, so it's optimized there.
Pretty artificial testcase. Fixed.
