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From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/31738] Fortran dot product vectorization is restricted Date: Mon, 28 Apr 2008 09:40:00 -0000 [thread overview] Message-ID: <20080428093916.32712.qmail@sourceware.org> (raw) In-Reply-To: <bug-31738-11659@http.gcc.gnu.org/bugzilla/> ------- Comment #6 from rguenth at gcc dot gnu dot org 2008-04-28 09:39 ------- For testvectdp2 we now miss to apply store-motion so the reduction is no longer recognized. This is the bad interaction between PRE and lim for which we have PR36009. If you add -fno-tree-pre vectorization fails because of t.f90:7: note: reduction: not commutative/associative: D.1011_34 even with -ffast-math. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- BugsThisDependsOn| |36009 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31738
prev parent reply other threads:[~2008-04-28 9:40 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2007-04-28 19:29 [Bug middle-end/31738] New: " jb at gcc dot gnu dot org 2007-04-28 21:05 ` [Bug middle-end/31738] " rguenth at gcc dot gnu dot org 2007-05-08 20:00 ` dorit at il dot ibm dot com 2007-05-16 19:45 ` dorit at il dot ibm dot com 2007-05-29 4:44 ` pinskia at gcc dot gnu dot org 2008-02-16 22:40 ` jb at gcc dot gnu dot org 2008-04-28 9:40 ` rguenth at gcc dot gnu dot org [this message]
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