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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/18065] usual arithmetic conversion not applying correctly
Date: Wed, 20 Oct 2004 19:29:00 -0000	[thread overview]
Message-ID: <20041020192914.26443.qmail@sourceware.org> (raw)
In-Reply-To: <20041019202143.18065.schlie@comcast.net>


------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-20 19:29 -------
And the reason why we don't shoten back to signed char % signed char:

	  /* Although it would be tempting to shorten always here, that loses
	     on some targets, since the modulo instruction is undefined if the
	     quotient can't be represented in the computation mode.  We shorten
	     only if unsigned or if dividing by something we know != -1.  */

So maybe this is correct.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18065


  parent reply	other threads:[~2004-10-20 19:29 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-19 20:22 [Bug c/18065] New: wrong built-in functions selected schlie at comcast dot net
2004-10-19 20:27 ` [Bug c/18065] " schlie at comcast dot net
2004-10-19 20:39 ` [Bug target/18065] " pinskia at gcc dot gnu dot org
2004-10-19 21:18 ` schlie at comcast dot net
2004-10-19 21:31 ` schlie at comcast dot net
2004-10-19 21:39 ` [Bug target/18065] not using qi version of divmod pinskia at gcc dot gnu dot org
2004-10-19 21:53 ` schlie at comcast dot net
2004-10-19 22:08 ` ericw at evcohs dot com
2004-10-19 22:31 ` schlie at comcast dot net
2004-10-19 23:13 ` ericw at evcohs dot com
2004-10-20 18:34 ` schlie at comcast dot net
2004-10-20 18:50 ` [Bug c/18065] usual arithmetic conversion not applying correctly pinskia at gcc dot gnu dot org
2004-10-20 19:14 ` schlie at comcast dot net
2004-10-20 19:18 ` pinskia at gcc dot gnu dot org
2004-10-20 19:25 ` pinskia at gcc dot gnu dot org
2004-10-20 19:29 ` pinskia at gcc dot gnu dot org [this message]
2004-10-20 19:33 ` schlie at comcast dot net
2004-10-20 19:54 ` pinskia at gcc dot gnu dot org
2004-10-20 21:19 ` schlie at comcast dot net
2004-10-20 21:25 ` pinskia at gcc dot gnu dot org
2004-10-20 21:31 ` jsm at polyomino dot org dot uk
2004-10-20 21:46 ` schlie at comcast dot net
2004-10-20 22:27 ` schlie at comcast dot net
2004-10-20 22:31 ` [Bug tree-optimization/18065] " pinskia at gcc dot gnu dot org
2004-10-20 22:42 ` jsm at polyomino dot org dot uk
2004-10-20 23:03 ` jsm at polyomino dot org dot uk
2004-10-20 23:28 ` schlie at comcast dot net
2004-10-21  1:04 ` schlie at comcast dot net
2004-10-21  1:28 ` schlie at comcast dot net
2004-10-21 12:47 ` bangerth at dealii dot org
2004-12-21 20:50 ` schlie at comcast dot net
2005-01-16  1:39 ` pinskia at gcc dot gnu dot org
2005-01-16  7:17 ` schlie at comcast dot net
2005-01-16 17:39 ` schlie at comcast dot net

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