AVX512FP16: Add vcmpph/vcmpsh/vcomish/vucomish.

AVX512FP16: Add vcmpph/vcmpsh/vcomish/vucomish.

gcc/ChangeLog:

	* config/i386/avx512fp16intrin.h: (_mm512_cmp_ph_mask):
	New intrinsic.
	(_mm512_mask_cmp_ph_mask): Likewise.
	(_mm512_cmp_round_ph_mask): Likewise.
	(_mm512_mask_cmp_round_ph_mask): Likewise.
	(_mm_cmp_sh_mask): Likewise.
	(_mm_mask_cmp_sh_mask): Likewise.
	(_mm_cmp_round_sh_mask): Likewise.
	(_mm_mask_cmp_round_sh_mask): Likewise.
	(_mm_comieq_sh): Likewise.
	(_mm_comilt_sh): Likewise.
	(_mm_comile_sh): Likewise.
	(_mm_comigt_sh): Likewise.
	(_mm_comige_sh): Likewise.
	(_mm_comineq_sh): Likewise.
	(_mm_ucomieq_sh): Likewise.
	(_mm_ucomilt_sh): Likewise.
	(_mm_ucomile_sh): Likewise.
	(_mm_ucomigt_sh): Likewise.
	(_mm_ucomige_sh): Likewise.
	(_mm_ucomineq_sh): Likewise.
	(_mm_comi_round_sh): Likewise.
	(_mm_comi_sh): Likewise.
	* config/i386/avx512fp16vlintrin.h (_mm_cmp_ph_mask): New intrinsic.
	(_mm_mask_cmp_ph_mask): Likewise.
	(_mm256_cmp_ph_mask): Likewise.
	(_mm256_mask_cmp_ph_mask): Likewise.
	* config/i386/i386-builtin-types.def: Add corresponding builtin types.
	* config/i386/i386-builtin.def: Add corresponding new builtins.
	* config/i386/i386-expand.c
	(ix86_expand_args_builtin): Handle new builtin types.
	(ix86_expand_round_builtin): Ditto.
	* config/i386/i386.md (ssevecmode): Add HF mode.
	(MODEFH): New mode iterator.
	* config/i386/sse.md
	(V48H_AVX512VL): New mode iterator to support HF vector modes.
	Ajdust corresponding description.
	(ssecmpintprefix): New.
	(VI12_AVX512VL): Adjust to support HF vector modes.
	(cmp_imm_predicate): Likewise.
	(<avx512>_cmp<mode>3<mask_scalar_merge_name><round_saeonly_name>):
	Likewise.
	(avx512f_vmcmp<mode>3<round_saeonly_name>): Likewise.
	(avx512f_vmcmp<mode>3_mask<round_saeonly_name>): Likewise.
	(<sse>_<unord>comi<round_saeonly_name>): Likewise.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/avx-1.c: Add test for new builtins.
	* gcc.target/i386/sse-13.c: Ditto.
	* gcc.target/i386/sse-23.c: Ditto.
	* gcc.target/i386/sse-14.c: Add test for new intrinsics.
	* gcc.target/i386/sse-22.c: Ditto.