gcc/
        * common/config/i386/i386-common.c
	(OPTION_MASK_ISA_AVX512BW_SET) : Define.
	(OPTION_MASK_ISA_AVX512BW_UNSET): Ditto.
	(OPTION_MASK_ISA_AVX512VL_UNSET) : Ditto.
	(ix86_handle_option): Handle OPT_mavx512bw.
	* config/i386/cpuid.h (bit_AVX512BW): Define.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect avx512bw,
	set -mavx512bw accordingly.
	* config/i386/i386-c.c (ix86_target_macros_internal): Handle
	OPTION_MASK_ISA_AVX512BW.
	* config/i386/i386.c (ix86_target_string): Handle -mavx512bw.
	(ix86_option_override_internal): Define PTA_AVX512BW, handle
	PTA_AVX512BW and OPTION_MASK_ISA_AVX512BW.
	(ix86_valid_target_attribute_inner_p): Handle OPT_mavx512bw.
	* config/i386/i386.h (TARGET_AVX512BW): Define.
	(TARGET_AVX512BW_P(x)): Ditto.
	* config/i386/i386.opt: Add mavx512bw.


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: r213811