Revert patch.

Revert patch.

gcc/
2021-04-08  Michael Meissner  <meissner@linux.ibm.com>

	Revert patch.
	* config/rs6000/contraints.md (eD): New constraint.
	* config/rs6000/predicates.md (easy_fp_constant): If we can load
	the constant with a pair of XXSPLTI32DX instructions, it is easy.
	(xxsplti32dx_operand): New predicate.
	(easy_vector_constant): If we can load the constant with a pair of
	XXSPLTI32DX instructions, it is easy.
	* config/rs6000/rs6000-cpus.def (OTHER_POWER10_MASKS): Add
	-mxxsplti32dx.
	(POWERPC_MASKS): Add -mxxsplti32dx.
	* config/rs6000/rs6000-protos.h (xxsplti32dx_constant_p): New
	declaration.
	* config/rs6000/rs6000.c (rs6000_option_override_internal): Add
	-mxxsplti32dx support.
	(xxsplti32dx_constant_p): New helper function.
	(output_vec_const_move): Split constants that need XXSPLTI32DX.
	(rs6000_opt_masks): Add -mxxsplti32dx.
	* config/rs6000/rs6000.md (movsf_hardfloat): Add support for
	loading constants with XXSPLTI32DX.
	(mov<mode>_hardfloat32, FMOVE64 iterator): Add support for loading
	constants with XXSPLTI32DX.
	(mov<mode>_hardfloat64, FMOVE64 iterator): Add support for loading
	constants with XXSPLTI32DX.
	* config/rs6000/rs6000.opt (-mxxsplti32dx): New switch.
	* config/rs6000/vsx.md (UNSPEC_XXSPLTI32DX_CONST): New unspec.
	(vsx_mov<mode>_64bit): Add support for loading constants with
	XXSPLTI32DX.
	(vsx_mov<mode>_32bit): Add support for loading constants with
	XXSPLTI32DX.
	(XXSPLTI32DX): New mode iterator.
	(xxsplti32dx_<mode>): New insn and splits.
	(xxsplti32dx_<mode>_first): New insns.
	(xxsplti32dx_<mode>_second): New insns.

gcc/testsuite/
2021-04-08  Michael Meissner  <meissner@linux.ibm.com>

	Revert patch.
	* gcc.target/powerpc/vec-splati-runnable.c: Update insn count.