[Bug target/84209] [avr] Don't split SP in split2

[denisc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84209

--- Comment #2 from denisc at gcc dot gnu.org ---
Author: denisc
Date: Wed Feb  7 09:59:52 2018
New Revision: 257440

URL: https://gcc.gnu.org/viewcvs?rev=257440&root=gcc&view=rev
Log:
        PR target/84209
        * config/avr/avr.h (GENERAL_REGNO_P, GENERAL_REG_P): New macros.
        * config/avr/avr.md: Only post-reload split REG-REG moves if
        either register is REGERAL_REG_P.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr.h
    trunk/gcc/config/avr/avr.md