[Bug tree-optimization/66868] [5/6 Regression] wrong code generated with -O3 (dead code removal?)

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66868

--- Comment #7 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I tried the same thing with a snapshot of the 5 branch I had lying around: 
r225783 from 2015-07-14.  I also don't see any differences in the output from
the middle end, as I would expect since this bug has shown up on multiple
targets.  So maybe this has been fixed recently?  Let me see if I can find an
older snapshot.