[Bug tree-optimization/61068] [4.8 Regression] -O3 generates bad code (when tree-vectorize or inline-functions is on)

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61068

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-*-*
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |4.7.3, 4.9.0
   Last reconfirmed|                            |2014-05-06
          Component|target                      |tree-optimization
                 CC|                            |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|-O3 generates bad code      |[4.8 Regression] -O3
                   |(when tree-vectorize or     |generates bad code (when
                   |inline-functions is on)     |tree-vectorize or
                   |                            |inline-functions is on)
   Target Milestone|---                         |4.8.3
      Known to fail|                            |4.8.2

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed on x86_64-linux with -O3 -fPIC (default on darwin) and with
-O2 -ftree-vectorize -funroll-loops -fPIC.

There are a few vectorizer wrong-code bugs on the 4.8 branch that I haven't
managed to backport yet from 4.9.  4.7 seems to work.