This implements HARD_REGNO_CALL_PART_CLOBBERED. Ok to apply?
Johann PR target/53065 * config/avr/avr.h (HARD_REGNO_CALL_PART_CLOBBERED): New hook define.
Index: config/avr/avr.h =================================================================== --- config/avr/avr.h (revision 186600) +++ config/avr/avr.h (working copy) @@ -394,6 +394,11 @@ enum reg_class { #define REGNO_OK_FOR_INDEX_P(NUM) 0 +#define HARD_REGNO_CALL_PART_CLOBBERED(REGNO, MODE) \ + (((REGNO) < 18 && (REGNO) + GET_MODE_SIZE (MODE) > 18) \ + || ((REGNO) < REG_Y && (REGNO) + GET_MODE_SIZE (MODE) > REG_Y) \ + || ((REGNO) < REG_Z && (REGNO) + GET_MODE_SIZE (MODE) > REG_Z)) + #define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true #define STACK_PUSH_CODE POST_DEC