[Bug target/56560] [4.6/4.7 regression] vzeroupper clobbers argument with AVX

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56560

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-03-07
      Known to work|                            |4.5.3
   Target Milestone|---                         |4.6.4
            Summary|[4.7 regression] vzeroupper |[4.6/4.7 regression]
                   |clobbers argument with AVX  |vzeroupper clobbers
                   |                            |argument with AVX
     Ever Confirmed|0                           |1
      Known to fail|                            |4.6.3, 4.7.2

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-07 10:09:43 UTC ---
Confirmed, same code generated on the 4.6 branch.  Works on the 4.5 branch
where no vzeroupper is inserted.  Likewise no vzeroupper on trunk.