[PING] Add refers_to_regno_p overload to simplify callers

[Jeff Law]

On 01/03/15 05:18, Oleg Endo wrote:
> https://gcc.gnu.org/ml/gcc-patches/2014-12/msg01730.html
>
> On Sun, 2014-12-21 at 23:02 +0100, Oleg Endo wrote:
>> Hi,
>>
>> It seems that quite some callers of refers_to_regno_p are interested in
>> testing a single register number only.  The caller code can be
>> simplified by adding an overload for refers_to_regno_p.  This is what
>> the patch does.  No functional changes.  Tested with 'make all-gcc' on
>> sh-elf cross config and bootstrapped on i686-pc-linux-gnu.
>> OK for trunk?
>>
>> Cheers,
>> Oleg
>>
>> gcc/ChangeLog:
>> 	* rtlanal.c (refers_to_regno_p): Change return value from int to
>> 	bool.
>> 	* rtl.h (refers_to_regno_p): Add overload.
>> 	* cse.c: Use it.
>> 	* bt-load.c: Likewise.
>> 	* combine.c: Likewise.
>> 	* df-scan.c: Likewise.
>> 	* sched-deps.c: Likewise.
>> 	* config/s390/s390.c: Likewise.
>> 	* config/m32r/m32r.c: Likewise.
>> 	* config/rs6000/spe.md: Likewise.
>> 	* config/rs6000/rs6000.c: Likewise.
>> 	* config/pa/pa.c: Likewise.
>> 	* config/stormy16/stormy16.c: Likewise.
>> 	* config/cris/cris.c: Likewise.
>> 	* config/arc/arc.md: Likewise.
>> 	* config/arc/arc.c: Likewise.
>> 	* config/sh/sh.md: Likewise.
>> 	* config/sh/sh.c: Likewise.
>> 	* config/frv/frv.c: Likewise.
OK for the trunk.  Though I think further patches of this nature should 
probably wait until stage1 reopens.

jeff