* config/i386/i386.c (ix86_print_operand): Print EVEX's RC modifiers.
        * config/i386/i386.md (define_constants): Define EVEx's RC constants.
        * gcc/config/i386/sse.md (<plusminus_insn><mode>3<mask_name>): Extend
        to support EVEX's rounding control.
        (*<plusminus_insn><mode>3<mask_name>): Ditto.
        (mul<mode>3<mask_name>): Ditto.
        (*mul<mode>3<mask_name>): Ditto.
        (<sse>_div<mode>3<mask_name>): Ditto.
        (<sse>_sqrt<mode>2<mask_name>): Ditto.
        (<sd_mask_codefor>fma_fmadd_<mode><sd_maskz_name>): Ditto.
        (avx512f_fmadd_<mode>_mask): Ditto.
        (avx512f_fmadd_<mode>_mask3): Ditto.
        (<sd_mask_codefor>fma_fmsub_<mode><sd_maskz_name>): Ditto.
        (avx512f_fmsub_<mode>_mask): Ditto.
        (avx512f_fmsub_<mode>_mask3): Ditto.
        (<sd_mask_codefor>fma_fnmadd_<mode><sd_maskz_name>): Ditto.
        (avx512f_fnmadd_<mode>_mask): Ditto.
        (avx512f_fnmadd_<mode>_mask3): Ditto.
        (<sd_mask_codefor>fma_fnmsub_<mode><sd_maskz_name>): Ditto.
        (avx512f_fnmsub_<mode>_mask): Ditto.
        (avx512f_fnmsub_<mode>_mask3): Ditto.
        (<sd_mask_codefor>fma_fmaddsub_<mode><sd_maskz_name>): Ditto.
        (avx512f_fmaddsub_<mode>_mask): Ditto.
        (avx512f_fmaddsub_<mode>_mask3): Ditto.
        (<sd_mask_codefor>fma_fmsubadd_<mode><sd_maskz_name>): Ditto.
        (avx512f_fmsubadd_<mode>_mask): Ditto.
        (avx512f_fmsubadd_<mode>_mask3): Ditto.
        (fmai_vmfmadd_<mode>): Ditto.
        (*fmai_fmadd_<mode>): Ditto.
        (*fmai_fmsub_<mode>): Ditto.
        (*fmai_fnmadd_<mode>): Ditto.
        (*fmai_fnmsub_<mode>): Ditto.
        (sse_cvtsi2ss): Ditto.
        (sse_cvtsi2ssq): Ditto.
        (sse_cvtss2si): Ditto.
        (sse_cvtss2siq): Ditto.
        (cvtusi2<ssescalarmodesuffix>32): Ditto.
        (cvtusi2<ssescalarmodesuffix>64): Ditto.
        (float<sseintvecmodelower><mode>2<mask_name>): Ditto.
        (ufloatv16siv16sf2<mask_name>): Ditto.
        (<mask_codefor>avx512f_fix_notruncv16sfv16si<mask_name>): Ditto.
        (<mask_codefor>avx512f_ufix_notruncv16sfv16si<mask_name>): Ditto.
        (sse2_cvtsi2sdq): Ditto.
        (avx512f_vcvtss2usi): Ditto.
        (avx512f_vcvtss2usiq): Ditto.
        (avx512f_vcvtsd2usi): Ditto.
        (avx512f_vcvtsd2usiq): Ditto.
        (sse2_cvtsd2si): Ditto.
        (sse2_cvtsd2siq): Ditto.
        (<mask_codefor>avx512f_cvtpd2dq512<mask_name>): Ditto.
        (avx512f_ufix_notruncv8dfv8si<mask_name>): Ditto.
        (<mask_codefor>avx512f_cvtpd2ps512<mask_name>): Ditto.
        (avx512f_scalef<mode><mask_name>): Ditto.
        (<code><mode>3<mask_name>): Ditto.
        (*avx2_<code><mode>3<mask_name>): Ditto.
        (avx512er_exp2<mode><mask_name): Ditto.
        (<mask_codefor>avx512er_rcp28<mode><mask_name>): Ditto.
        (<mask_codefor>avx512er_rsqrt28<mode><mask_name>): Ditto.
        (avx512f_fmadd_<mode>_maskz): New.
        * config/i386/subst.md (SUBST_A): New.
        (round_name): Ditto.
        (round_mask_operand2): Ditto.
        (round_mask_operand3): Ditto.
        (round_mask_scalar_operand3): Ditto.
        (round_sd_mask_operand4): Ditto.
        (round_op2): Ditto.
        (round_op3): Ditto.
        (round_op4): Ditto.
        (round_op5): Ditto.
        (round_op6): Ditto.
        (round_mask_op2): Ditto.
        (round_mask_op3): Ditto.
        (round_mask_scalar_op3): Ditto.
        (round_sd_mask_op4): Ditto.
        (round_constraint): Ditto.
        (round_constraint2): Ditto.
        (round_constraint3): Ditto.
        (round_nimm_predicate): Ditto.
        (round_mode512bit_condition): Ditto.
        (round_modev4sf_condition): Ditto.
        (round_codefor): Ditto.
        (round_opnum): Ditto.
        (round): 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: r206220