Add integer logical vector pair instructions

Add integer logical vector pair instructions

2023-11-16  Michael Meissner  <meissner@linux.ibm.com>

gcc/

	* config/rs6000/rs600-protos.h (vector_pair_to_vector_mode): Delete.
	(rs6000_adjust_for_vector_pair): Delete.
	* config/rs6000/rs6000.cc (rs6000_modes_tieable_p): Allow vector pair
	modes to be tied with vector modes.
	(vector_pair_to_vector_mode): Make static.  Move higher.  Add integer
	vector pair support.
	(rs6000_split_vpair_constan): Move higher.
	(rs6000_expand_vector_pair_init): Add integer vector pair support.
	(altivec_expand_vec_perm_le): Add support for permuting V32QImode.
	(rs6000_adjust_for_vector_pair): Delete.
	* config/rs6000/vector-pair.md (VPAIR): Add integer pair modes.
	(VPAIR_FP): New mode iterator.
	(VPAIR_FP_UNARY): Rename from VPAIR_UNARY.
	(VPAIR_FP_BINARY): Rename from VPAIR_BINARY.
	(VPAIR_LOGICAL): New mode iterator.
	(VPAIR_LOGICAL_UNARY): New code iterator.
	(VPAIR_LOGICAL_BINARY): Likewise.
	(vpair_op): Add integer ops.
	(VPAIR_VECTOR): Add integer vector pair modes.
	(vpair_vector_l): Likewise.
	(VPAIR_ELEMENT): Likewise.
	(vpair_element_l): Likewise.
	(floating point operations): Switch from VPAIR to VPAIR_FP.
	(<vpair_op><mode>2, VPAIR_LOGICAL_UNARY iterator): New insns.
	(<vpair_op><mode>3, VPAIR_LOGICAL_BINARY iterator): Likewise.
	(nor<mode>3_1): New combiner insn.
	(nor<mode>3_): Likewise.
	(andc<mode>3): Likewise.
	(eqv<mode>3): Likewise.
	(nand<mode>3_1): Likewise.
	(nand<mode>3_2): Likewise.
	(*orc<mode>3): Likewise.