AVX-512. Extend max/min insn patterns.

AVX-512.  Extend max/min insn patterns.

gcc/
	* config/i386/sse.md (VI128_256): Delete.
	(define_mode_iterator VI124_256): New.
	(define_mode_iterator VI124_256_AVX512F_AVX512BW): Ditto.
	(define_expand "<code><mode>3<mask_name><round_name>"): Delete.
	(define_expand "<code><VI124_256_AVX512F_AVX512BW:mode>3"): New.
	(define_insn "*avx2_<code><VI124_256:mode>3"): Rename from
	"*avx2_<code><mode>3<mask_name><round_name>" and update mode iterator.
	(define_expand "<code><VI48_AVX512VL:mode>3_mask"): New.
	(define_insn "*avx512bw_<code><VI48_AVX512VL:mode>3<mask_name>"): Ditto.
	(define_insn "<mask_codefor><code><mode>3<mask_name>"): Update mode
	iterator.
	(define_expand "<code><VI8_AVX2:mode>3"): Update pettern generation
	in presence of AVX-512.

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: r215202