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[Bug fortran/31139] sum(w_re(1:nn,1)*fi(i(1:nn, ii))) up to 3.5x slower than C version
- From: "burnus at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Mar 2007 22:45:31 -0000
- Subject: [Bug fortran/31139] sum(w_re(1:nn,1)*fi(i(1:nn, ii))) up to 3.5x slower than C version
- References: <bug-31139-13404@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from burnus at gcc dot gnu dot org 2007-03-11 22:45 -------
Contains the test case. The hand-made SSE version (USE_VECTORS) crashes here
for -m32, but as it is C vs. Fortran, one can completely ignore that test case
(for -m64 USE_VECTORS is about as fast as the other C versions anyhow).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31139