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Re: fix 23630

From: Richard Henderson <rth at redhat dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Wed, 31 Aug 2005 13:54:41 -0700
Subject: Re: fix 23630
References: <20050831045958.GA8873@redhat.com> <20050831194750.GB7403@devserv.devel.redhat.com>

On Wed, Aug 31, 2005 at 03:47:51PM -0400, Jakub Jelinek wrote:
> (subreg/s:SI (reg:DI 134 [ iftmp.1 ]) 4)

Hmm.  I see I didn't actually test any big-endian target.

I wonder if the bug is using gen_lowpart at all, and if I 
should in fact be using the zero-offset part.  I.e. it should
always be subreg offset 0, no matter what.

Except that's illegal in the ppc64 case, so I'd have to use
a bitfield extract.

I'll have a look.


r~

References:
- fix 23630
  - From: Richard Henderson
- Re: fix 23630
  - From: Jakub Jelinek

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