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[Bug tree-optimization/53346] [4.6/4.7/4.8 Regression] Bad vectorization in the proc cptrf2 of rnflow.f90
- From: "dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 19 May 2012 22:19:02 +0000
- Subject: [Bug tree-optimization/53346] [4.6/4.7/4.8 Regression] Bad vectorization in the proc cptrf2 of rnflow.f90
- Auto-submitted: auto-generated
- References: <bug-53346-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53346
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |matz at gcc dot gnu.org
--- Comment #19 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-05-19 22:19:02 UTC ---
The change in timing occured at revision 163998
Author: matz
Date: Wed Sep 8 12:34:52 2010 UTC (20 months, 1 week ago)
Changed paths: 4
Log Message:
PR tree-optimization/33244
* tree-ssa-sink.c (statement_sink_location): Don't sink into
empty loop latches.
testsuite/
PR tree-optimization/33244
* gfortran.dg/vect/fast-math-vect-8.f90: New test.
[macbook] test/dbg_rnflow% /opt/gcc/gcc4.6p-163997/bin/gfortran -c -O3
cptrf2.f90
[macbook] test/dbg_rnflow% makeo ; time a.out > /dev/null
20.881u 0.345s 0:21.37 99.2% 0+0k 3+0io 0pf+0w
[macbook] test/dbg_rnflow% /opt/gcc/gcc4.6p-163998/bin/gfortran -c -O3
cptrf2.f90
[macbook] test/dbg_rnflow% makeo ; time a.out > /dev/null
28.545u 0.351s 0:29.06 99.4% 0+0k 3+0io 0pf+0w