This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: -freduce-all-givs and fortran
- To: aj at suse dot de
- Subject: Re: -freduce-all-givs and fortran
- From: Toon Moene <moene at knmi dot nl>
- Date: Thu, 06 Sep 2001 09:57:52 +0000
- CC: gcc-patches at gcc dot gnu dot org, gcc at gcc dot gnu dot org
- Organization: Royal Netherlands Meteorological Institute
> Using -fno-move-all-movables -fno-reduce-all-givs is a
> performance gain for 171.swim and 200.sixtrack but pessimizes
> 172.[m]grid and 173.app[lu], 168.wupwise is indifferent.
Fascinating ... Do 171.swim and 200.sixtrack profit from loop
optimization *at all* ? What happens if you use
-O2 -march=athlon -malign-double -fno-strength-reduce
?
--
Toon Moene, KNMI, PO Box 201, 3730 AE De Bilt, The Netherlands.
Tel. +31302206443, Fax +31302210407, e-mail moene@knmi.nl
URL: http://www.knmi.nl/hirlam