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From: "hp at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/21134] Make gengenrtl emit mode checks aborting on VOIDmode
Date: Sat, 23 Apr 2005 15:14:00 -0000	[thread overview]
Message-ID: <20050423151424.19375.qmail@sourceware.org> (raw)
In-Reply-To: <20050420231406.21134.hp@gcc.gnu.org>


------- Additional Comments From hp at gcc dot gnu dot org  2005-04-23 15:14 -------
In response to comment #2:
Any and all SET_SRC/SET_DEST mode-exceptions must be considered to be added
to genpreds and genrecog as well, for possible omission of the automatically
added mode checks.  The sweeping statement humorousely referred to, seems to
be a common delusion, shared with at least those programs.  Things don't break
until there's a (match_operand:P "predicate" x) where x is one of those
exceptions (without genpreds/genrecog modified as per const_int).
That then causes the predicate to return false.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21134


      parent reply	other threads:[~2005-04-23 15:14 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-20 23:14 [Bug middle-end/21134] New: Make gengenrtl emit mode checks aborting on avoid VOIDmode hp at gcc dot gnu dot org
2005-04-20 23:14 ` [Bug middle-end/21134] Make gengenrtl emit mode checks aborting on VOIDmode hp at gcc dot gnu dot org
2005-04-21  1:00 ` pinskia at gcc dot gnu dot org
2005-04-23 14:44 ` hp at gcc dot gnu dot org
2005-04-23 14:49 ` roger at eyesopen dot com
2005-04-23 15:14 ` hp at gcc dot gnu dot org [this message]

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