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kind of regression -fprofile-* between r126538 and r126587
- From: Thomas Veith <xtv at veith-web dot com>
- To: gcc at gcc dot gnu dot org
- Date: Thu, 12 Jul 2007 20:54:19 +0200 (CEST)
- Subject: kind of regression -fprofile-* between r126538 and r126587
Hi *,
when compiling crafty-20.14 with
CFLAGS='$(CFLAGS) -Wall -pipe -D_REENTRANT -march=i686 -O3 \
-fprofile-use -fbranch-probabilities -fomit-frame-pointer \
-ftree-vectorize -ftree-vectorizer-verbose=1 -msse2 \
-fno-gcse -mpreferred-stack-boundary=2'
with rev. 125687 crafty breaks severly -- with rev. 126538 it compiles and
runs smoothly.
As you can see, there are a lot of options involved and crafty is a big
program so I'm not able to provide a reduced testcase and file a PR in
bugzilla. But maybe someone can take this as a hint.
Best regards,
Thomas
p.s.: when compiling without -fprofile-use, there is an almost 10% speedup
from r126538 to r126587.. congrats!!!
r126538 -> Raw nodes per second: 1043604
r126587 -> Raw nodes per second: 1132738