avr.md (UNSPEC_SWAP): Remove constants.

avr.md (UNSPEC_SWAP): Remove constants.

	* config/avr/avr.md (UNSPEC_SWAP): Remove constants.
	(*swap): Remove.
	(rotlqi3, *rotlqi3_4, rotlhi3, *rotlhi3_8,
	rotlsi3, *rotlsi3_8, *rotlsi3_16, *rotlsi3_24): New patterns.
	(ashlqi3_const4, ashlqi3_const5, ashlqi3_const6, ashlqi3_l_const4,
	ashlqi3_l_const5, ashlqi3_l_const6, lshrqi3_const4, lshrqi3_const5,
	lshrqi3_const6, lshrqi3_l_const4, lshrqi3_l_const4, lshrqi3_l_const6
	peephole2's): Replace unspec with rotate.
	* config/avr/avr.c (avr_rtx_costs): Add ROTATE.

From-SVN: r141533