Add AVX512 k-mask intrinsics.

Add AVX512 k-mask intrinsics.

gcc/
	* config/i386/avx512bwintrin.h: Add k-mask registers shift intrinsics.
	* config/i386/avx512dqintrin.h: Ditto.
	* config/i386/avx512fintrin.h: Ditto.
	* config/i386/i386-builtin-types.def: Add new types.
	* gcc/config/i386/i386.c: Handle new types.
	* config/i386/i386-builtin.def (__builtin_ia32_kshiftliqi)
	(__builtin_ia32_kshiftlihi, __builtin_ia32_kshiftlisi)
	(__builtin_ia32_kshiftlidi, __builtin_ia32_kshiftriqi)
	(__builtin_ia32_kshiftrihi, __builtin_ia32_kshiftrisi)
	(__builtin_ia32_kshiftridi): New.
	* config/i386/sse.md (k<code><mode>): Rename *k<code><mode>.

gcc/testsuite/
	* gcc.target/i386/avx512bw-kshiftld-1.c: New test.
	* gcc.target/i386/avx512bw-kshiftlq-1.c: Ditto.
	* gcc.target/i386/avx512dq-kshiftlb-1.c: Ditto.
	* gcc.target/i386/avx512f-kshiftlw-1.c: Ditto.
	* gcc.target/i386/avx512bw-kshiftrd-1.c: Ditto.
	* gcc.target/i386/avx512bw-kshiftrq-1.c: Ditto.
	* gcc.target/i386/avx512dq-kshiftrb-1.c: Ditto.
	* gcc.target/i386/avx512f-kshiftrw-1.c: Ditto.
	* gcc.target/i386/avx512bw-kshiftld-2.c: Ditto.
	* gcc.target/i386/avx512bw-kshiftlq-2.c: Ditto.
	* gcc.target/i386/avx512bw-kshiftrd-2.c: Ditto.
	* gcc.target/i386/avx512bw-kshiftrq-2.c: Ditto.
	* gcc.target/i386/avx512dq-kshiftlb-2.c: Ditto.
	* gcc.target/i386/avx512dq-kshiftrb-2.c: Ditto.
	* gcc.target/i386/avx512f-kshiftlw-2.c: Ditto.
	* gcc.target/i386/avx512f-kshiftrw-2.c: Ditto.
	* gcc.target/i386/avx-1.c: Test new intrinsics.
	* gcc.target/i386/sse-13.c: Ditto.
	* gcc.target/i386/sse-23.c: Ditto.

From-SVN: r244685