AVX-512. Add reduce, range, fpclass insn patterns.

AVX-512. Add reduce, range, fpclass insn patterns.

gcc/
	* config/i386/i386.c
	(ix86_expand_args_builtin): Handle avx512dq_rangepv8df_mask_round,
	avx512dq_rangepv16sf_mask_round, avx512dq_rangepv4df_mask,
	avx512dq_rangepv8sf_mask, avx512dq_rangepv2df_mask,
	avx512dq_rangepv4sf_mask.
	* config/i386/sse.md
	(define_c_enum "unspec"): Add UNSPEC_REDUCE, UNSPEC_FPCLASS,
	UNSPEC_RANGE.
	(define_insn "<mask_codefor>reducep<mode><mask_name>"): New.
	(define_insn "reduces<mode>"): Ditto.
	(define_insn "avx512dq_rangep<mode><mask_name><round_saeonly_name>"):
	Ditto.
	(define_insn "avx512dq_ranges<mode><round_saeonly_name>"): Ditto.
	(define_insn "avx512dq_fpclass<mode><mask_scalar_merge_name>"): Ditto.
	(define_insn "avx512dq_vmfpclass<mode>"): Ditto..

Co-Authored-By: Andrey Turetskiy <andrey.turetskiy@intel.com>
Co-Authored-By: Anna Tikhonova <anna.tikhonova@intel.com>
Co-Authored-By: Ilya Tocar <ilya.tocar@intel.com>
Co-Authored-By: Ilya Verbin <ilya.verbin@intel.com>
Co-Authored-By: Kirill Yukhin <kirill.yukhin@intel.com>
Co-Authored-By: Maxim Kuznetsov <maxim.kuznetsov@intel.com>
Co-Authored-By: Michael Zolotukhin <michael.v.zolotukhin@intel.com>
From-SVN: r215107