Re: strengthen protection against REG_EQUIV/EQUAL on !REG set

[Olivier Hainque]

>>      * rtl.h (set_for_reg_notes): Declare.
>>      * emit-rtl.c (set_for_reg_notes): New function.
>>      (set_unique_reg_note): Use it.
>>      * optabs.c (add_equal_note): Likewise.
> This is fine.

 checked-in as revision 210998.

 Thanks Jeff :-)

 Olivier