[Bug tree-optimization/19107] New: regclass.c miscompiled by -ftree-vectorize

["belyshev at lubercy dot com" <gcc-bugzilla at gcc dot gnu dot org>]

Hope I didn't mess anything with my gcc tree :)

Steps to reproduce:

1. apply the patch to regclass.c
2. compile record_operand_costs.i with "-O1 -ftree-vectorize" and link into cc1
3. use testcase bug.i to see segmentation fault

-- 
           Summary: regclass.c miscompiled by -ftree-vectorize
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: belyshev at lubercy dot com
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: i686-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19107