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Re: variable-arrays problem

From: Richard Henderson <rth at redhat dot com>
To: Dale Johannesen <dalej at apple dot com>
Cc: gcc at gcc dot gnu dot org
Date: Wed, 7 Aug 2002 12:44:08 -0700
Subject: Re: variable-arrays problem
References: <20020807181302.GB4555@redhat.com> <3920DF62-AA32-11D6-846A-003065C86F94@apple.com>

On Wed, Aug 07, 2002 at 11:19:33AM -0700, Dale Johannesen wrote:
> >(clobber (mem:blk (scratch))) will.
> 
> Thanks!  What does that mean exactly?  All memory is clobbered?

Yes.  Ideally we'd just clobber all stack memory, but
we need this special form in order to match bits marked
with RTX_UNCHANGING_P.  Which IMO is sort of a historical
mistake for any stack variable.

r~

References:
- Re: variable-arrays problem
  - From: Richard Henderson
- Re: variable-arrays problem
  - From: Dale Johannesen

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