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Re: Help with another constraint

From: Rask Ingemann Lambertsen <rask at sygehus dot dk>
To: Dave Korn <dave dot korn at artimi dot com>
Cc: "'Revital1 Eres'" <ERES at il dot ibm dot com>, "'Balaji V. Iyer'" <bviyer at ncsu dot edu>, gcc at gcc dot gnu dot org, openrisc at opencores dot org
Date: Wed, 12 Dec 2007 17:28:44 +0100
Subject: Re: Help with another constraint
References: <002601c83c7c$b3763960$33160e98@ece.ncsu.edu> <OF55758D8C.871C0678-ONC22573AF.003D4671-C22573AF.00433D08@il.ibm.com> <000601c83cbf$0c887a30$2e08a8c0@CAM.ARTIMI.COM>

On Wed, Dec 12, 2007 at 01:01:00PM -0000, Dave Korn wrote:
> On 12 December 2007 12:14, Revital1 Eres wrote:
> 
> > It seems that the pair m and I is missing (which indicate the memory =
> > constant instruction).  
> 
>   So doesn't the question then become "Why isn't reload reloading the constant
> into a register"?

   One possibility is that reload is not run on insns produced by reload
itself. Other usual suspects are post-reload splitters and peepholes.

-- 
Rask Ingemann Lambertsen
Danish law requires addresses in e-mail to be logged and stored for a year

References:
- RE: Help with another constraint
  - From: Balaji V. Iyer
- RE: Help with another constraint
  - From: Revital1 Eres
- RE: Help with another constraint
  - From: Dave Korn

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