PR target/66217
	* config/rs6000/constraints.md ("S", "T", "t"): Delete.  Update
	"available letters" comment.
	* config/rs6000/predicates.md (mask_operand, mask_operand_wrap,
	mask64_operand, mask64_2_operand, any_mask_operand, and64_2_operand,
	and_2rld_operand):  Delete.
	(and_operand): Adjust.
	(rotate_mask_operator): New.
	* config/rs6000/rs6000-protos.h (build_mask64_2_operands,
	includes_lshift_p, includes_rshift_p, includes_rldic_lshift_p,
	includes_rldicr_lshift_p, insvdi_rshift_rlwimi_p, extract_MB,
	extract_ME): Delete.
	(rs6000_is_valid_mask, rs6000_is_valid_and_mask,
	rs6000_is_valid_shift_mask, rs6000_is_valid_insert_mask,
	rs6000_insn_for_and_mask, rs6000_insn_for_shift_mask,
	rs6000_insn_for_insert_mask, rs6000_is_valid_2insn_and,
	rs6000_emit_2insn_and): New.
	* config/rs6000/rs6000.c (num_insns_constant): Adjust.
	(build_mask64_2_operands, includes_lshift_p, includes_rshift_p,
	includes_rldic_lshift_p, includes_rldicr_lshift_p,
	insvdi_rshift_rlwimi_p, extract_MB, extract_ME): Delete.
	(rs6000_is_valid_mask, rs6000_is_valid_and_mask,
	rs6000_insn_for_and_mask, rs6000_is_valid_shift_mask,
	s6000_insn_for_shift_mask, rs6000_is_valid_insert_mask,
	rs6000_insn_for_insert_mask, rs6000_is_valid_2insn_and,
	rs6000_emit_2insn_and): New.
	(print_operand) <'b', 'B', 'm', 'M', 's', 'S', 'W'>: Delete.
	(rs6000_rtx_costs) <CONST_INT>: Delete mask_operand and mask64_operand
	handling.
	<NOT>: Don't fall through to next case.
	<AND>: Handle the various rotate-and-mask cases directly.
	<IOR>: Always cost as one insn.
	* config/rs6000/rs6000.md (splitter for bswap:SI): Adjust.
	(and<mode>3): Adjust expander for the new patterns.
	(and<mode>3_imm, and<mode>3_imm_dot, and<mode>3_imm_dot2,
	and<mode>3_imm_mask_dot, and<mode>3_imm_mask_dot2): Adjust condition.
	(*and<mode>3_imm_dot_shifted): New.
	(*and<mode>3_mask): Delete, rewrite as ...
	(and<mode>3_mask): ... New.
	(*and<mode>3_mask_dot, *and<mode>3_mask_dot): Rewrite.
	(andsi3_internal0_nomc): Delete.
	(*andsi3_internal6): Delete.
	(*and<mode>3_2insn): New.
	(insv, insvsi_internal, *insvsi_internal1, *insvsi_internal2,
	*insvsi_internal3, *insvsi_internal4, *insvsi_internal5,
	*insvsi_internal6, insvdi_internal, *insvdi_internal2,
	*insvdi_internal3): Delete.
	(*rotl<mode>3_mask, *rotl<mode>3_mask_dot, *rotl<mode>3_mask_dot2,
	*rotl<mode>3_insert, *rotl<mode>3_insert_2, *rotl<mode>3_insert_3,
	*rotl<mode>3_insert_4, two splitters for multi-precision shifts,
	*ior<mode>_mask): New.
	(extzv, extzvdi_internal, *extzvdi_internal1, *extzvdi_internal2,
	*rotlsi3_mask, *rotlsi3_mask_dot, *rotlsi3_mask_dot2,
	*ashlsi3_imm_mask, *ashlsi3_imm_mask_dot, *ashlsi3_imm_mask_dot2,
	*lshrsi3_imm_mask, *lshrsi3_imm_mask_dot, *lshrsi3_imm_mask_dot2):
	Delete.
	(ashr<mode>3): Delete expander.
	(*ashr<mode>3): Rename to ...
	(ashr<mode>3): ... This.
	(ashrdi3_no_power, *ashrdisi3_noppc64be): Delete.
	(*rotldi3_internal4, *rotldi3_internal5 and split,
	*rotldi3_internal6 and split, *ashldi3_internal4, ashldi3_internal5
	and split, *ashldi3_internal6 and split, *ashldi3_internal7,
	ashldi3_internal8 and split, *ashldi3_internal9 and split): Delete.
	(*anddi3_2rld, *anddi3_2rld_dot, *anddi3_2rld_dot2): Delete.
	(splitter for loading a mask): Adjust.
	* doc/md.texi (Machine Constraints): Remove q, S, T, t constraints.

From-SVN: r226005