Enable VAES support [2/5]

Enable VAES support [2/5]

gcc/
	* config.gcc: Add vaesintrin.h.
	* config/i386/i386-builtin-types.def (V64QI_FTYPE_V64QI_V64QI): New type.
	* config/i386/i386-builtin.def (__builtin_ia32_vaesdec_v16qi,
	__builtin_ia32_vaesdec_v32qi, __builtin_ia32_vaesdec_v64qi): New builtins.
	* config/i386/i386.c (ix86_expand_args_builtin): Handle new type.
	* config/i386/immintrin.h: Include vaesintrin.h.
	* config/i386/sse.md (vaesdec_<mode>): New pattern.
	* config/i386/vaesintrin.h (_mm256_aesdec_epi128, _mm512_aesdec_epi128,
	_mm_aesdec_epi128): New intrinsics.

gcc/testsuite/
	* gcc.target/i386/avx512-check.h: Handle bit_VAES.
	* gcc.target/i386/avx512f-aesdec-2.c: New test.
	* gcc.target/i386/avx512fvl-vaes-1.c: Ditto.
	* gcc.target/i386/avx512vl-aesdec-2.c: Ditto.
	* gcc.target/i386/i386.exp (check_effective_target_avx512vaes): New.

From-SVN: r255572