http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55177
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-11-02
CC| |ebotcazou at gcc dot
| |gnu.org
Component|tree-optimization |rtl-optimization
Summary|Missed optimisation: bswap, |missed optimizations with
|mask with constant, bswap |__builtin_bswap
|back again. |
Ever Confirmed|0 |1
Severity|normal |enhancement
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-11-02
10:56:17 UTC ---
If you don't need to swap, then do not use __builtin_bswap! The first example
is really dumb. That being said, the second example has some merit and we
should do something to optimize it at the RTL level.
