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Re: reload problem in current CVS

To: Bernd Schmidt <bernds at pathia dot cygnus dot co dot uk>
Subject: Re: reload problem in current CVS
From: Jan Hubicka <hubicka at atrey dot karlin dot mff dot cuni dot cz>
Date: Mon, 29 Nov 1999 15:29:18 +0100
Cc: Stephen L Moshier <moshier at mediaone dot net>, gcc-bugs at gcc dot gnu dot org, hubicka at freesoft dot cz
References: <Pine.LNX.4.20.9911251047530.5029-100000@moshier.ne.mediaone.net> <Pine.LNX.4.04.9911291359590.16486-100000@pathia.cygnus.co.uk>

[snip]
Thanks for the explanation. Now I don't feel so depressed that I wasn't able
to track this down myself.
> 
> Jan, is there any particular reason that the patterns which use FLOAT_INT_REGS
> (like the one above) couldn't be written like this, i.e. splitting the
> alternatives:
> 
> (define_insn "*negsf2_if"
>   [(set (match_operand:SF 0 "nonimmediate_operand" "=f,rm")
>         (neg:SF (match_operand:SF 1 "nonimmediate_operand" "0,0")))
>    (clobber (reg:CC 17))]
> 
> That should avoid this particular problem.
This is most probably not problem at all. (except that it probably might
be cleaner to fix this in reload to avoid future problems)
I can send a patch for this shortly that splits out all the "fr" pairs.
This probably worth the comment near beggining the i386.md too

Thank you
Honza
> 
> Bernd

References:
- reload problem in current CVS
  - From: Stephen L Moshier
- Re: reload problem in current CVS
  - From: Bernd Schmidt

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