re PR target/66217 (PowerPC rotate/shift/mask instructions not optimal)

re PR target/66217 (PowerPC rotate/shift/mask instructions not optimal)

	PR target/66217
	* config/rs6000/rs6000-protos.h (rs6000_emit_2insn_and): Change
	prototype.
	* config/rs6000/rs6000.c (rs6000_emit_dot_insn): New function.
	(rs6000_emit_2insn_and): Handle dot forms.
	* config/rs6000/rs6000.md (and<mode>3): Adjust.
	(*and<mode>3_2insn): Remove TODO.  Adjust.  Add "type" attr.
	(*and<mode>3_2insn_dot, *and<mode>3_2insn_dot2): New.

From-SVN: r226112