[Bug c/51015] New: ice in vect_determine_vectorization_factor with -O3

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51015

             Bug #: 51015
           Summary: ice in vect_determine_vectorization_factor with -O3
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: dcb...@hotmail.com


Created attachment 25745
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25745
C source code

I just tried to compile the package e2fsprogs-1.42-0.5
on latest trunk snapshot 20111105 on an AMD x86_64 box.

The compiler said

pass1.c:543:6: internal compiler error: in vect_determine_vectorization_factor,
at tree-vect-loop.c:348
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Preprocessed source code attached. Flag -O3 required.