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From: Steve Ellcey <sje@cup.hp.com>
To: joern.rennecke@superh.com
Cc: gcc@gcc.gnu.org
Subject: Re: IA64 floating point division question
Date: Wed, 01 Sep 2004 17:51:00 -0000	[thread overview]
Message-ID: <200409011751.KAA16738@hpsje.cup.hp.com> (raw)
In-Reply-To: <200409011209.i81C98n10992@chloe.uk.w2k.superh.com>

> >             (set (scratch:BI)
> >                 (unspec:BI [
> >                         (reg:SF 349 [ a ])
> >                         (reg:SF 350 [ b ])
> >                     ] 14))
> 
> 'scratch' will probably fail to match your operand predicate.
> match_scratch is no good if you want your pattern to be split before
> reload.  Instead, you have to use match_operand, and make your expander
> allocate a pseudo register and stick it into the scratch operand.

Ah, that's the piece of the puzzle I was missing.

Thank you,

Steve Ellcey
sje@cup.hp.com

  reply	other threads:[~2004-09-01 17:51 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-08-31 23:20 Steve Ellcey
2004-08-31 23:58 ` Zack Weinberg
2004-09-01 12:25   ` Joern Rennecke
2004-09-01 12:28 ` Joern Rennecke
2004-09-01 17:51   ` Steve Ellcey [this message]
     [not found] <200408312358.QAA26610@hpsje.cup.hp.com>
2004-09-01  0:10 ` Zack Weinberg

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