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List:       gcc-patches
Subject:    Re: Reload patch for PA call rewrite.
From:       Richard Henderson <rth () redhat ! com>
Date:       2002-10-31 23:05:31
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On Wed, Oct 30, 2002 at 03:03:15PM -0500, John David Anglin wrote:
> This really isn't a problem although there was a problem with my
> backend patch in this respect.  The backend simply has to always
> allocate a slot so that that the elimination offsets are independent
> of whether the arg pointer is live or not.

This would mean that no leaf functions would ever have an
empty stack frame.  Badness.

> I did some further investigation of this and there doesn't appear
> to be a simple change to do this.  If I make the arg pointer an
> eliminable register that can't be eliminated...

No, this is not the tack I was indicating.  See the other
message I sent a moment ago.



r~
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