sse.md (unspec): Added UNSPEC_VPERMI2, UNSPEC_VPERMT2, UNSPEC_SCATTER.

sse.md (unspec): Added UNSPEC_VPERMI2, UNSPEC_VPERMT2, UNSPEC_SCATTER.

        * config/i386/sse.md (unspec): Added UNSPEC_VPERMI2, UNSPEC_VPERMT2,
        UNSPEC_SCATTER.
        (VI48F_512): New.
        (avx512fmaskmode): Ditto.
        (bcstscalarsuff): Ditto.
        (avx512f_blendm<mode>): Ditto.
        (cmp_imm_predicate): Ditto.
        (avx512f_cmp<mode>3): Ditto.
        (avx512f_vec_dup<mode>): Ditto.
        (avx512f_vec_dup_mem<mode>): Ditto.
        (avx512f_vpermi2var<mode>3): Ditto.
        (avx512f_vpermt2var<mode>3): Ditto.
        (vec_init<mode>): Ditto.
        (avx512f_gathersi<mode>): Ditto.
        (*avx512f_gathersi<mode>): Ditto.
        (*avx512f_gathersi<mode>_2): Ditto.
        (avx512f_gatherdi<mode>): Ditto.
        (*avx512f_gatherdi<mode>): Ditto.
        (*avx512f_gatherdi<mode>_2): Ditto.
        (avx512f_scattersi<mode>): Ditto.
        (*avx512f_scattersi<mode>): Ditto.
        (avx512f_scatterdi<mode>): Ditto.
        (*avx512f_scatterdi<mode>): Ditto.
        (sseintprefix): Extened with wider modes.
        (VEC_GATHER_IDXSI): Ditto.
        (VEC_GATHER_IDXDI): Ditto.
        (VEC_GATHER_SRCDI): 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>
Co-Authored-By: Sergey Lega <sergey.s.lega@intel.com>
From-SVN: r203604