Enable VAES support [1/5]

Enable VAES support [1/5]

gcc/
	* common/config/i386/i386-common.c (OPTION_MASK_ISA_VAES_SET,
	OPTION_MASK_ISA_VAES_UNSET): New.
	(ix86_handle_option): Handle -mvaes.
	* config/i386/cpuid.h: Define bit_VAES.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect -mvaes.
	* config/i386/i386-c.c (__VAES__): New.
	* config/i386/i386.c (ix86_target_string): Add -mvaes.
	(ix86_valid_target_attribute_inner_p): Ditto.
	* config/i386/i386.h (TARGET_VAES, TARGET_VAES_P): New.
	* config/i386/i386.opt: Add -mvaes.
	* doc/invoke.texi: Ditto.

From-SVN: r255571