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Re: [3.4-bib, Patch] rs6000 floating point multiply-add instructions
- From: Geoff Keating <geoffk at geoffk dot org>
- To: dje at watson dot ibm dot com
- Cc: pinskia at physics dot uc dot edu, segher at chello dot nl, dalej at apple dot com, gcc-patches at gcc dot gnu dot org
- Date: Tue, 19 Nov 2002 14:45:52 -0800
- Subject: Re: [3.4-bib, Patch] rs6000 floating point multiply-add instructions
- References: <jmwun9jt6j.fsf@desire.geoffk.org> <200211192214.RAA27332@makai.watson.ibm.com>
> Cc: Andrew Pinski <pinskia@physics.uc.edu>,
> Segher Boessenkool <segher@chello.nl>, Dale Johannesen <dalej@apple.com>,
> gcc-patches@gcc.gnu.org
> Date: Tue, 19 Nov 2002 17:14:26 -0500
> From: David Edelsohn <dje@watson.ibm.com>
> It unfortunately looks more complicated than I expected for GCC
> combine to try to recognize the transformed, non-canonical versions of the
> instructions.
What goes wrong? I'd think it'd just be a change in combine_simplify_rtx.
--
- Geoffrey Keating <geoffk@geoffk.org>