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Re: altivec trashing frame ptr reg

From: Alan Modra <amodra at bigpond dot net dot au>
To: Aldy Hernandez <aldyh at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Tue, 26 Feb 2002 13:18:05 +1030
Subject: Re: altivec trashing frame ptr reg
References: <20020226023130.GM1054@bubble.sa.bigpond.net.au> <m2ofidotms.fsf@culebra.cygnus.com>

On Tue, Feb 26, 2002 at 01:37:47PM +1100, Aldy Hernandez wrote:
> >>>>> "Alan" == Alan Modra <amodra@bigpond.net.au> writes:
> 
>  > For ABI_V4, r12 may be in use as a frame pointer.
>  > 	* config/rs6000/rs6000.c (rs6000_emit_prologue <vrsave>): Don't
>  > 	zap the temp frame pointer reg.
> 
> Are you sure r0 is available?

Looks like it is to me..  I'll admit to not knowing for sure that
"mtvrsave 0" is valid.

-- 
Alan Modra
IBM OzLabs - Linux Technology Centre

References:
- altivec trashing frame ptr reg
  - From: Alan Modra
- Re: altivec trashing frame ptr reg
  - From: Aldy Hernandez

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