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From: "burnus at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/44334] rnflow.f90 ~27% slower with -fwhole-program -flto after revision 159852
Date: Wed, 08 Sep 2010 21:00:00 -0000	[thread overview]
Message-ID: <20100908210011.25413.qmail@sourceware.org> (raw)
In-Reply-To: <bug-44334-12313@http.gcc.gnu.org/bugzilla/>



------- Comment #9 from burnus at gcc dot gnu dot org  2010-09-08 21:00 -------
For what it is worth, on AMD Athlon 64 X2 4800+ / x86-64-linux, I get for
gfortran -O3 -ffast-math -march=native -- and with with and without -flto:
 0m45.132s -- (options as above)
 0m52.731s -- additionally -fwhole-program

That's a +16% increase in run-time with -fwhole-program.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44334


  parent reply	other threads:[~2010-09-08 21:00 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-30 17:17 [Bug lto/44334] New: [4.6 Regression] " dominiq at lps dot ens dot fr
2010-05-30 18:06 ` [Bug lto/44334] " dominiq at lps dot ens dot fr
2010-05-30 18:09 ` [Bug fortran/44334] " rguenth at gcc dot gnu dot org
2010-05-30 18:11 ` dominiq at lps dot ens dot fr
2010-05-30 18:12 ` dominiq at lps dot ens dot fr
2010-05-30 18:31 ` dominiq at lps dot ens dot fr
2010-05-30 18:49 ` rguenth at gcc dot gnu dot org
2010-05-30 18:55 ` dominiq at lps dot ens dot fr
2010-06-05  9:52 ` dominiq at lps dot ens dot fr
2010-09-08 21:00 ` burnus at gcc dot gnu dot org [this message]
2010-09-08 21:04 ` hubicka at gcc dot gnu dot org
2010-09-09  9:01 ` burnus at gcc dot gnu dot org

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