[cft] subreg validation patch

[Richard Henderson]

On Tue, Nov 16, 2004 at 02:45:47PM +0100, Ulrich Weigand wrote:
> 	* regmove.c (regmove_optimize): Use lowpart_subreg instead of
> 	gen_rtx_SUBREG with incorrect offset to compute SRC_SUBREG.