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profiledbootstrap success!
- From: Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>
- To: gcc at gcc dot gnu dot org
- Date: Tue, 20 Jan 2004 10:55:51 +0100 (CET)
- Subject: profiledbootstrap success!
Hi!
I never thought this could make that big difference, but using
BOOT_CFLAGS="-g -O2 -march=athlon -fomit-frame-pointer" make
profiledbootstrap instead of BOOT_CFLAGS="-g -O2 -march=athlon" make
bootstrap yields these timings for my favorite POOMA testcase for 3.4:
bootstrap:
real 3m50.475s
user 3m36.080s
sys 0m6.620s
profiledbootstrap -fomit-frame-pointer:
real 3m30.830s
user 3m18.640s
sys 0m5.560s
this is a 10% improvement in compilation speed (at -O2 -ffast-math
-funroll-loops)!
I'll try a profiledbootstrap with -O3 now.
Richard.
--
Richard Guenther <richard dot guenther at uni-tuebingen dot de>
WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/