[Bug target/58762] [missed optimization] Vectorizing abs(int).

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58762

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Target|                            |x86_64-*-*, i?86-*-*
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-10-17
          Component|tree-optimization           |target
     Ever confirmed|0                           |1
           Severity|normal                      |enhancement

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The backend simply doesn't implement an expander for abs I think.  The
vectorizer
simply checks if an optab is available for the mode in question.  See
ix86_expand_fp_absneg_operator.