[Bug tree-optimization/51491] New: ccp when converting from alloca should add a CLOBBER to right before __builtin_stack_restore

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51491

             Bug #: 51491
           Summary: ccp when converting from alloca should add a CLOBBER
                    to right before __builtin_stack_restore
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: pins...@gcc.gnu.org


While looking into 51471, I noticed that we don't add a clobber for the
converted alloca which we should have done.