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From: rth@gcc.gnu.org
To: echristo@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
	reichelt@igpm.rwth-aachen.de, rth@gcc.gnu.org
Subject: Re: optimization/1762: treatment of NaNs violates IEEE 754
Date: Wed, 20 Feb 2002 17:36:00 -0000	[thread overview]
Message-ID: <20020221012802.4504.qmail@sources.redhat.com> (raw)

Synopsis: treatment of NaNs violates IEEE 754

Responsible-Changed-From-To: rth->echristo
Responsible-Changed-By: rth
Responsible-Changed-When: Wed Feb 20 17:28:02 2002
Responsible-Changed-Why:
    I can't currently reproduce this with gcc 3.1, but I can't get 3.1 to generate movf.d at all, which is also broken.
    
    Eric, once conditional move is unhorked, I suspect the
    problem here is that FP conditional move is not symmetric.
    I shouldn't have thought that would be a problem once the
    non-reversible comparison is reduced to a boolean.  Nor do
    I seem to be able to produce the same failure on Alpha, 
    which has the fcmov insn patterned the same way.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=1762


             reply	other threads:[~2002-02-21  1:28 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-02-20 17:36 rth [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-11-26  9:56 bangerth
2002-11-26  8:37 Bosscher Steven Civ USAFA/DFAN
2002-04-10  8:06 Reichelt
2001-06-25 10:49 neil
2001-04-01  0:00 reichelt

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