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
