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CVS performance regression over 2.7.2 on SPECint95 on sparc
- To: gcc at gcc dot gnu dot org
- Subject: CVS performance regression over 2.7.2 on SPECint95 on sparc
- From: Dan Nicolaescu <dann at ics dot uci dot edu>
- Date: Fri, 01 Dec 2000 12:36:40 -0800
Hi!
SPECint95 benchmarks compiled with gcc from updated from CVS yesterday
evening (PST) performe worse than when compiled with gcc-2.7.2.3
on sun-sparc-solaris2.7 on a 333MHz Ultra5 machine with 256MB RAM.
The only flags used are:
-O3 -mv8 for 2.7.2.3
and
-O3 -mcpu=v8 for the CVS version
here are
the results:
SPEC Benchmark CINT95 Summary
for gcc-CVS for gcc-CVS
Base Base Base Base Base
Benchmarks Ref Time Run Time Ratio Run Time Ratio
------------ -------- -------- -------- -------- --------
099.go 4600 449 10.2 * 394 11.7 *
124.m88ksim 1900 234 8.12* 244 7.80*
126.gcc 1700 13.7 --X 164 --X
129.compress 1800 352 5.11* 224 8.05*
130.li 1900 254 7.48* 256 7.42*
132.ijpeg 2400 252 9.53* 246 9.77*
134.perl 1900 207 9.17* 202 9.40*
147.vortex 2700 2.40 --X 323 8.36*
for both for gcc I get comparison errors.
vortex compiled with gcc-CVS segfaults.
Does anybody else see this?
Any suggestions?
Thanks.
--dan