[SH] Reorganize shift patterns in MD

[Kaz Kojima]

Oleg Endo <oleg.endo@t-online.de> wrote:
> The attached patch sorts and groups some of the SH shift patterns a
> little.  Also, some of the patterns set the insn length attributes which
> doesn't seem useful since the insns in question are split into multiple
> individual insns anyway.
> 
> Tested on rev 189601 with
> make -k check RUNTESTFLAGS="--target_board=sh-sim
> \{-m2/-ml,-m2/-mb,-m2a/-mb,-m2a-single/-mb,-m4/-ml,-m4/-mb,
> -m4-single/-ml,-m4-single/-mb,-m4a-single/-ml,-m4a-single/-mb}"
> 
> and no new failures.  CSiBE result-size set also doesn't show any
> change.
> 
> OK?

OK.

Regards,
	kaz