From: Jeffrey A Law <law@cygnus.com>
To: hjl@lucon.org (H.J. Lu)
Cc: wilson@cygnus.com (Jim Wilson),
scox@cygnus.com, crux@pool.informatik.rwth-aachen.de,
egcs@cygnus.com
Subject: Re: A patch for PPro
Date: Wed, 06 May 1998 18:14:00 -0000 [thread overview]
Message-ID: <24328.894503624@hurl.cygnus.com> (raw)
In-Reply-To: <m0yX9fY-000268C@ocean.lucon.org>
In message < m0yX9fY-000268C@ocean.lucon.org >you write:
> The current egcs in CVS disables fp conditional move for PPro. The
> problem is mark_constants has to search inside a CONST_DOUBLE when it
> is enabled. I understand it is not safe to do so. I am enclosing a
> patch which will search inside a CONST_DOUBLE only for those PPro fp
> conditional moves. It won't affect any other CPUs, even other x86
> instructions.
The problem with conditional moves is much worse. Jim outlined the
problems yesterday I believe.
You can also read the short comment before the floating point
conditional moves.
jeff
next prev parent reply other threads:[~1998-05-06 18:14 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-04-25 18:25 More fp bug in egcs H.J. Lu
1998-04-27 21:29 ` Jim Wilson
1998-04-30 20:03 ` Jim Wilson
1998-05-02 18:56 ` H.J. Lu
1998-05-03 20:10 ` Jim Wilson
1998-05-05 0:35 ` Jeffrey A Law
1998-05-05 19:14 ` H.J. Lu
1998-05-06 11:49 ` Jim Wilson
1998-05-05 5:03 ` Jeffrey A Law
1998-05-06 17:12 ` A patch for PPro H.J. Lu
1998-05-06 18:14 ` Jeffrey A Law [this message]
1998-05-07 15:31 ` Jim Wilson
[not found] <199805131005.KAA00076@iron.rcp.co.uk>
1998-05-15 1:48 ` H.J. Lu
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