On Tue, Apr 17, 2012 at 11:13 AM, Alan Modra <amo...@gmail.com> wrote:
> This provides some protection against misuse of r0, r11 and r12.  I
> found it useful when enabling out-of-line saves for large frames.  ;-)
>
>        * config/rs6000/rs6000.c (START_USE, END_USE, NOT_INUSE): Define.
>        (rs6000_emit_prologue): Use the above to catch register overlap.

This patch is okay.

Thanks, David

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