* common/config/i386/i386-common.c
	(OPTION_MASK_ISA_AVX512VL_SET): Define.
	(OPTION_MASK_ISA_AVX512F_UNSET): Update.
	(ix86_handle_option): Handle OPT_mavx512vl.
	* config/i386/cpuid.h (bit_AVX512VL): Define.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect avx512vl,
	set -mavx512vl accordingly.
	* config/i386/i386-c.c (ix86_target_macros_internal): Handle
	OPTION_MASK_ISA_AVX512VL.
	* config/i386/i386.c (ix86_target_string): Handle -mavx512vl.
	(ix86_option_override_internal): Define PTA_AVX512VL, handle
	PTA_AVX512VL and OPTION_MASK_ISA_AVX512VL.
	(ix86_valid_target_attribute_inner_p): Handle OPT_mavx512vl.
	* config/i386/i386.h (TARGET_AVX512VL): Define.
	(TARGET_AVX512VL_P(x)): Ditto.
	* config/i386/i386.opt: Add mavx512vl.


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: r213813