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From: "jaydub66 at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/34683] Fortran FE generated IL pessimizes middle-end IL and analysis Date: Sun, 06 Jan 2008 22:15:00 -0000 [thread overview] Message-ID: <20080106220832.9709.qmail@sourceware.org> (raw) In-Reply-To: <bug-34683-14773@http.gcc.gnu.org/bugzilla/> ------- Comment #16 from jaydub66 at gmail dot com 2008-01-06 22:08 ------- I've done some experimenting with older GCC versions I have floating around on my machines: Compiling the test case with both 4.1.2 and 4.2.1 gives an ICE, so I guess we can't exactly call this a regression. But then compiling with older 4.3 trunk builds works much better: I have a version from August 24 of last year, which runs the test case at full -O3 in a perfect 8sec, with 32MB memory usage (that is with --enable-checking=release). And I have two other builds from October 8 and November 9, which both run the test case in about 38s with 85MB mem-usage (they are built with --enable-checking=debug, so this is probably just debugging overhead). At least none of them takes the crazy 800MB of recent builds. To sum up: It seems like trunk versions up to at least November 9 seem to work fine on this test case. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34683
next prev parent reply other threads:[~2008-01-06 22:09 UTC|newest] Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top 2008-01-05 23:51 [Bug tree-optimization/34683] New: compile-time problem with -fstrict-aliasing jaydub66 at gmail dot com 2008-01-06 0:37 ` [Bug tree-optimization/34683] " jaydub66 at gmail dot com 2008-01-06 0:55 ` pinskia at gcc dot gnu dot org 2008-01-06 6:47 ` jaydub66 at gmail dot com 2008-01-06 8:08 ` jaydub66 at gmail dot com 2008-01-06 9:09 ` jvdelisle at gcc dot gnu dot org 2008-01-06 10:08 ` rguenth at gcc dot gnu dot org 2008-01-06 10:35 ` [Bug fortran/34683] Fortran FE generated IL pessimizes middle-end IL and analysis rguenth at gcc dot gnu dot org 2008-01-06 11:10 ` burnus at gcc dot gnu dot org 2008-01-06 11:14 ` rguenth at gcc dot gnu dot org 2008-01-06 11:46 ` rguenth at gcc dot gnu dot org 2008-01-06 12:02 ` rguenth at gcc dot gnu dot org 2008-01-06 12:02 ` rguenth at gcc dot gnu dot org 2008-01-06 12:08 ` rguenth at gcc dot gnu dot org 2008-01-06 12:19 ` rguenth at gcc dot gnu dot org 2008-01-06 12:30 ` rguenth at gcc dot gnu dot org 2008-01-06 22:15 ` jaydub66 at gmail dot com [this message] 2008-01-06 22:24 ` [Bug middle-end/34683] [4.3 Regression] " pinskia at gcc dot gnu dot org 2008-01-06 22:24 ` [Bug fortran/34683] " rguenther at suse dot de 2008-01-07 14:05 ` [Bug tree-optimization/34683] [4.3 Regression] " rguenth at gcc dot gnu dot org 2008-01-07 15:00 ` rguenth at gcc dot gnu dot org 2008-01-07 15:20 ` rguenth at gcc dot gnu dot org 2008-01-07 16:18 ` rguenth at gcc dot gnu dot org 2008-01-07 16:41 ` rguenth at gcc dot gnu dot org 2008-01-07 17:28 ` rguenth at gcc dot gnu dot org 2008-01-08 10:18 ` rguenth at gcc dot gnu dot org 2008-01-08 10:27 ` rguenth at gcc dot gnu dot org 2008-01-08 12:18 ` rguenth at gcc dot gnu dot org 2008-01-08 12:22 ` rguenth at gcc dot gnu dot org 2008-01-08 12:31 ` steven at gcc dot gnu dot org 2008-01-08 12:41 ` steven at gcc dot gnu dot org 2008-01-08 12:57 ` rguenth at gcc dot gnu dot org 2008-01-08 13:02 ` rguenth at gcc dot gnu dot org 2008-01-08 13:56 ` steven at gcc dot gnu dot org 2008-01-08 16:50 ` rguenth at gcc dot gnu dot org 2008-01-08 21:36 ` rguenth at gcc dot gnu dot org 2008-01-09 1:09 ` steven at gcc dot gnu dot org 2008-01-09 10:32 ` jaydub66 at gmail dot com 2008-01-09 10:32 ` rguenther at suse dot de 2008-01-09 10:35 ` [Bug tree-optimization/34683] [4.3 Regression] SSA rewriting in the loop unroller causes quadratic behavior steven at gcc dot gnu dot org 2008-01-10 15:05 ` rguenth at gcc dot gnu dot org 2008-01-10 15:29 ` rguenth at gcc dot gnu dot org 2008-01-10 16:00 ` rguenth at gcc dot gnu dot org 2008-01-10 17:57 ` rguenth at gcc dot gnu dot org 2008-01-10 18:05 ` rguenth at gcc dot gnu dot org 2008-01-10 18:08 ` [Bug tree-optimization/34683] " rguenth at gcc dot gnu dot org 2008-01-10 18:24 ` steven at gcc dot gnu dot org 2008-01-10 22:19 ` jaydub66 at gmail dot com 2008-01-10 23:45 ` steven at gcc dot gnu dot org 2008-01-11 13:58 ` rguenth at gcc dot gnu dot org 2008-01-12 8:39 ` rakdver at gcc dot gnu dot org
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