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From: "raksit at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/37489] In cse.c:fold_rtx(), "true" is represented in floating-point modes as const_true_rtx, if FLOAT_STORE_FLAG_VALUE is undefined.
Date: Fri, 12 Sep 2008 01:09:00 -0000	[thread overview]
Message-ID: <20080912010823.14964.qmail@sourceware.org> (raw)
In-Reply-To: <bug-37489-15599@http.gcc.gnu.org/bugzilla/>



------- Comment #3 from raksit at gcc dot gnu dot org  2008-09-12 01:08 -------
(In reply to comment #1)
> This is a target bug really since it is SSE which needs to set
> FLOAT_STORE_FLAG_VALUE correctly.
> 

In that case, I think simplify-rtx.c:simplify_relational_operation() is being
overly conservative; and its behavior should be changed to match that of
cse.c:fold_rtx() in this regard.


-- 

raksit at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |raksit at gcc dot gnu dot
                   |                            |org
         AssignedTo|raksit at gcc dot gnu dot   |unassigned at gcc dot gnu
                   |org                         |dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37489


  parent reply	other threads:[~2008-09-12  1:09 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-11 23:36 [Bug rtl-optimization/37489] New: " raksit at gcc dot gnu dot org
2008-09-11 23:54 ` [Bug target/37489] " pinskia at gcc dot gnu dot org
2008-09-12  0:47 ` hjl dot tools at gmail dot com
2008-09-12  1:09 ` raksit at gcc dot gnu dot org [this message]
2008-09-12 17:54 ` hjl dot tools at gmail dot com
2008-09-12 18:53 ` raksit at gcc dot gnu dot org
2008-09-12 18:55 ` raksit at gcc dot gnu dot org
2008-09-12 19:42 ` [Bug middle-end/37489] const_true_rtx returned for float compare hjl dot tools at gmail dot com
2008-09-13 15:50 ` hjl at gcc dot gnu dot org
2008-09-13 16:01 ` [Bug rtl-optimization/37489] " hjl dot tools at gmail dot com
2008-11-06 14:05 ` rguenth at gcc dot gnu dot org
2008-11-06 15:08 ` rguenth at gcc dot gnu dot org

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