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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/51505] [4.5/4.6/4.7 Regression] ICE: in form_sum, at reload.c:5349 with -O --param max-cse-insns=1
Date: Tue, 13 Dec 2011 11:04:00 -0000 [thread overview]
Message-ID: <bug-51505-4-MMMomQBD30@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-51505-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51505
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bonzini at gnu dot org
--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-12-13 11:02:32 UTC ---
> IMHO the problem is that we have a REG_EQUAL note that refers to dead pseudos,
> perhaps DF should just remove such notes?
I'd think so. When DF adds REG_DEAD/REG_UNUSED notes, it knowingly ignores
REG_EQUAL/REG_EQUIV notes (even if you do df_set_flags (DF_EQ_NOTES) before
df_note_add_problem). That's a reasonable choice, but then it should remove
the latter notes that have become invalid because of the former.
Paolo, would this be easily doable?
next prev parent reply other threads:[~2011-12-13 11:03 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-11 21:38 [Bug rtl-optimization/51505] New: " zsojka at seznam dot cz
2011-12-12 10:07 ` [Bug rtl-optimization/51505] " rguenth at gcc dot gnu.org
2011-12-13 8:36 ` jakub at gcc dot gnu.org
2011-12-13 11:04 ` ebotcazou at gcc dot gnu.org [this message]
2011-12-13 19:38 ` bonzini at gnu dot org
2011-12-14 20:53 ` jakub at gcc dot gnu.org
2012-01-17 16:13 ` abel at gcc dot gnu.org
2012-01-17 16:26 ` bonzini at gnu dot org
2012-01-18 9:17 ` abel at gcc dot gnu.org
2012-01-18 9:34 ` bonzini at gnu dot org
2012-01-18 10:06 ` abel at gcc dot gnu.org
2012-01-18 11:55 ` bonzini at gnu dot org
2012-01-18 12:26 ` abel at gcc dot gnu.org
2012-01-19 8:14 ` abel at gcc dot gnu.org
2012-01-19 8:59 ` [Bug rtl-optimization/51505] [4.5/4.6 " jakub at gcc dot gnu.org
2012-07-02 11:01 ` rguenth at gcc dot gnu.org
2013-04-12 16:17 ` [Bug rtl-optimization/51505] [4.6 " jakub at gcc dot gnu.org
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