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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/48442] ICE: in init_seqno, at sel-sched.c:6767 with -Os -fselective-scheduling2 --param max-sched-extend-regions-iters=100
Date: Wed, 06 Apr 2011 13:41:00 -0000	[thread overview]
Message-ID: <bug-48442-4-HajiD9ZxcT@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-48442-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48442

--- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> 2011-04-06 13:41:33 UTC ---
Confirmed.  The 4.4/4.5 failure is most likely a dup of PR 46204.  The 4.6/4.7
failure is due to selective scheduler removing a conditional jump during
purge_empty_blocks in sel_sched_region_1 and then tripping on an incorrect
assert in init_seqno (we probably never managed to remove jumps at that point
prior to PR 46204 fix, but the nearby comment suggests we could and contradicts
the assert).  I'll test the attached patch that relaxes the assert and also
drops number_of_insns argument to clean up a bit.


  parent reply	other threads:[~2011-04-06 13:41 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-04 23:44 [Bug rtl-optimization/48442] New: " zsojka at seznam dot cz
2011-04-06 13:39 ` [Bug rtl-optimization/48442] " amonakov at gcc dot gnu.org
2011-04-06 13:41 ` amonakov at gcc dot gnu.org [this message]
2011-04-06 13:42 ` amonakov at gcc dot gnu.org
2011-04-07  7:18 ` abel at gcc dot gnu.org
2011-04-08 11:45 ` amonakov at gcc dot gnu.org
2011-04-08 14:35 ` amonakov at gcc dot gnu.org
2015-05-07 20:46 ` amonakov at gcc dot gnu.org

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