GFNI enabling [3/4]

GFNI enabling [3/4]

gcc/
	 * config/i386/gfniintrin.h (_mm_gf2p8affine_epi64_epi8,
	 _mm256_gf2p8affine_epi64_epi8, _mm_mask_gf2p8affine_epi64_epi8,
	 _mm_maskz_gf2p8affine_epi64_epi8, _mm256_mask_gf2p8affine_epi64_epi8,
	 _mm256_maskz_gf2p8affine_epi64_epi8,
	 _mm512_mask_gf2p8affine_epi64_epi8, _mm512_gf2p8affine_epi64_epi8
	 _mm512_maskz_gf2p8affine_epi64_epi8): New intrinsics.
	 * config/i386/i386-builtin.def (__builtin_ia32_vgf2p8affineqb_v64qi,
	 __builtin_ia32_vgf2p8affineqb_v32qi,
	 __builtin_ia32_vgf2p8affineqb_v16qi): New builtins.
	 * config/i386/sse.md (vgf2p8affineqb_<mode><mask_name>): New pattern.
gcc/testsuite/
	 * gcc.target/i386/avx-1.c: Handle new intrinsics.
	 * gcc.target/i386/avx512f-gf2p8affineqb-2.c: New runtime tests.
	 * gcc.target/i386/avx512vl-gf2p8affineqb-2.c: Ditto.
	 * gcc.target/i386/gfni-1.c: Add tests for GF2P8AFFINE.
	 * gcc.target/i386/gfni-2.c: Ditto.
	 * gcc.target/i386/gfni-3.c: Ditto.
	 * gcc.target/i386/gfni-4.c: Ditto.
	 * gcc.target/i386/sse-13.c: Handle new tests.
	 * gcc.target/i386/sse-14.c: Handle new tests.
	 * gcc.target/i386/sse-23.c: Handle new tests.

From-SVN: r254634