[SH] PR 52933 - Use div0s insn for integer sign comparisons

[Kaz Kojima]

Oleg Endo <oleg.endo@t-online.de> wrote:
> This patch adds basic support for utilizing the SH div0s instruction to
> simplify some integer sign comparisons such as '(a < 0) == (b < 0)'.
> Tested on rev 190332 with
> make -k check RUNTESTFLAGS="--target_board=sh-sim
> \{-m2/-ml,-m2/-mb,-m2a/-mb,-m4/-ml,-m4/-mb,-m4a/-ml,-m4a/-mb}"
> 
> and no new failures.
> OK?
 
OK.

Regards,
	kaz