gcc/config/avr
	PR target/61055
	* config/avr/avr.md (cc): Add new attribute set_vzn.
	(addqi3, addqq3, adduqq3, subqi3, subqq3, subuqq3, negqi2) [cc]:
	Set cc insn attribute to set_vzn instead of set_zn for alternatives
	with INC, DEC or NEG.
	* config/avr/avr.c (avr_notice_update_cc): Handle SET_VZN.
	(avr_out_plus_1): ADIW sets cc0 to CC_SET_CZN.
	INC, DEC and ADD+ADC set cc0 to CC_CLOBBER.

gcc/testsuite/
	PR target/61055
	* gcc.target/avr/torture/pr61055.c: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210267 138bc75d-0d04-0410-961f-82ee72b054a4