rs6000: Add more type nodes to support builtin processing

rs6000: Add more type nodes to support builtin processing

2021-08-24  Bill Schmidt  <wschmidt@linux.ibm.com>

gcc/
	* config/rs6000/rs6000-call.c (rs6000_init_builtins): Initialize
	various pointer type nodes.
	* config/rs6000/rs6000.h (rs6000_builtin_type_index): Add enum
	values for various pointer types.
	(ptr_V16QI_type_node): New macro.
	(ptr_V1TI_type_node): New macro.
	(ptr_V2DI_type_node): New macro.
	(ptr_V2DF_type_node): New macro.
	(ptr_V4SI_type_node): New macro.
	(ptr_V4SF_type_node): New macro.
	(ptr_V8HI_type_node): New macro.
	(ptr_unsigned_V16QI_type_node): New macro.
	(ptr_unsigned_V1TI_type_node): New macro.
	(ptr_unsigned_V8HI_type_node): New macro.
	(ptr_unsigned_V4SI_type_node): New macro.
	(ptr_unsigned_V2DI_type_node): New macro.
	(ptr_bool_V16QI_type_node): New macro.
	(ptr_bool_V8HI_type_node): New macro.
	(ptr_bool_V4SI_type_node): New macro.
	(ptr_bool_V2DI_type_node): New macro.
	(ptr_bool_V1TI_type_node): New macro.
	(ptr_pixel_type_node): New macro.
	(ptr_intQI_type_node): New macro.
	(ptr_uintQI_type_node): New macro.
	(ptr_intHI_type_node): New macro.
	(ptr_uintHI_type_node): New macro.
	(ptr_intSI_type_node): New macro.
	(ptr_uintSI_type_node): New macro.
	(ptr_intDI_type_node): New macro.
	(ptr_uintDI_type_node): New macro.
	(ptr_intTI_type_node): New macro.
	(ptr_uintTI_type_node): New macro.
	(ptr_long_integer_type_node): New macro.
	(ptr_long_unsigned_type_node): New macro.
	(ptr_float_type_node): New macro.
	(ptr_double_type_node): New macro.
	(ptr_long_double_type_node): New macro.
	(ptr_dfloat64_type_node): New macro.
	(ptr_dfloat128_type_node): New macro.
	(ptr_ieee128_type_node): New macro.
	(ptr_ibm128_type_node): New macro.
	(ptr_vector_pair_type_node): New macro.
	(ptr_vector_quad_type_node): New macro.
	(ptr_long_long_integer_type_node): New macro.
	(ptr_long_long_unsigned_type_node): New macro.