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Re: [cft] subreg validation patch

From: Eric Botcazou <ebotcazou at libertysurf dot fr>
To: Richard Henderson <rth at redhat dot com>
Cc: gcc at gcc dot gnu dot org,Jan Hubicka <jh at suse dot cz>
Date: Sun, 14 Nov 2004 11:40:26 +0100
Subject: Re: [cft] subreg validation patch
References: <200411120930.37626.ebotcazou@libertysurf.fr> <20041114044113.GA23743@redhat.com> <20041114061358.GA23912@redhat.com>

> Saw it myself... finally.  Got a fix for it too.  Nicely irritating
> in that we didn't actually *want* a subreg, we just created it so
> that we could pass it to some subroutine, when we should have been
> using subreg_regno_offset in the first place.

Thanks.  I spotted the problem with Jakub's struct-layout testsuite.  Jakub 
may have advertised it as a compatibility testsuite, but it is extremely 
useful in stressing the middle-end and the back-end (as of today, the only 
failures on the SPARC are due to the subreg representability problem).

-- 
Eric Botcazou

References:
- Non-representable subregs of subword pseudoregs
  - From: Eric Botcazou
- Re: [cft] subreg validation patch
  - From: Richard Henderson
- Re: [cft] subreg validation patch
  - From: Richard Henderson

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