RFA: regrename: preserve highpart & lowpart extraction in find_oldest_value_reg, copyprop_hardreg_forward_1

[Richard Henderson]

On Wed, Jul 17, 2002 at 02:29:01AM +0100, Joern Rennecke wrote:
> 	* regrename.c (maybe_mode_change): New function.
> 	(find_oldest_value_reg, copyprop_hardreg_forward_1): Use it.

Ok.


r~