AVX-512. 58/n. Add vpmul[u]dq insn patterns.

AVX-512. 58/n.  Add vpmul[u]dq insn patterns.

gcc/
	* config/i386/sse.md
	(define_expand "vec_widen_umult_even_v8si<mask_name>"): Add masking.
	(define_insn "*vec_widen_umult_even_v8si<mask_name>"): Ditto.
	(define_expand "vec_widen_umult_even_v4si<mask_name>"): Ditto.
	(define_insn "*vec_widen_umult_even_v4si<mask_name>"): Ditto.
	(define_expand "vec_widen_smult_even_v8si<mask_name>"): Ditto.
	(define_insn "*vec_widen_smult_even_v8si<mask_name>"): Ditto.
	(define_expand "sse4_1_mulv2siv2di3<mask_name>"): Ditto.
	(define_insn "*sse4_1_mulv2siv2di3<mask_name>"): Ditto.
	(define_insn "avx512dq_mul<mode>3<mask_name>"): New.

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: r216176