Enable VAES support [4/5]

Enable VAES support [4/5]

gcc/
	* config/i386/i386-builtin.def (__builtin_ia32_vaesenc_v16qi,
	__builtin_ia32_vaesenc_v32qi, __builtin_ia32_vaesenc_v64qi): New.
	* config/i386/sse.md (vaesenc_<mode>): New pattern.
	* config/i386/vaesintrin.h (_mm256_aesenc_epi128, _mm512_aesenc_epi128,
	_mm_aesenc_epi128): New intrinsics.

gcc/testsuite/
	* gcc.target/i386/avx512f-aesenc-2.c: New test.
	* gcc.target/i386/avx512vl-aesenc-2.c: Ditto.
	* gcc.target/i386/avx512fvl-vaes-1.c: Handle new intrinsics.

From-SVN: r255675