[Bug tree-optimization/51070] [4.6/4.7 Regression] ICE verify_gimple failed

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51070

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011-11-10
          Component|c                           |tree-optimization
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.6.3
            Summary|ICE verify_gimple failed    |[4.6/4.7 Regression] ICE
                   |                            |verify_gimple failed
     Ever Confirmed|0                           |1
      Known to fail|                            |4.4.6, 4.5.3, 4.6.2, 4.7.0

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-11-10 
10:59:37 UTC ---
Catched by copyprop, caused by loop distributions memset replacement.  Fails
in random ways on all branches that have loop distribution.  A regression
with -O3 (enabled by default) since 4.6.