[Bug libfortran/21468] New: vectorizing libfortran

["tkoenig at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Libgfortran doesn't vectorize very well at the moment.

I added some vectorization options to the Makefile on
ia64-unknown-linux-gnu, ran make under "script" and grepped
for VECTORIZED.  This is what I got:

../../../gcc-4.1-20050508/libgfortran/intrinsics/date_and_time.c:235: note: 
LOOP VECTORIZED.

None of the matmul, dotprod, ... intrinsics were vectorized.

This would probably require further improvements in gcc's vectorization
capabilities, plus special-casing stride 1 in many cases.

-- 
           Summary: vectorizing libfortran
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P2
         Component: libfortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tkoenig at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21468