AVX512FP16: Add FP16 fma instructions.

AVX512FP16: Add FP16 fma instructions.

Add vfmadd[132,213,231]ph/vfnmadd[132,213,231]ph/vfmsub[132,213,231]ph/
vfnmsub[132,213,231]ph.

gcc/ChangeLog:

	* config/i386/avx512fp16intrin.h (_mm512_mask_fmadd_ph):
	New intrinsic.
	(_mm512_mask3_fmadd_ph): Likewise.
	(_mm512_maskz_fmadd_ph): Likewise.
	(_mm512_fmadd_round_ph): Likewise.
	(_mm512_mask_fmadd_round_ph): Likewise.
	(_mm512_mask3_fmadd_round_ph): Likewise.
	(_mm512_maskz_fmadd_round_ph): Likewise.
	(_mm512_fnmadd_ph): Likewise.
	(_mm512_mask_fnmadd_ph): Likewise.
	(_mm512_mask3_fnmadd_ph): Likewise.
	(_mm512_maskz_fnmadd_ph): Likewise.
	(_mm512_fnmadd_round_ph): Likewise.
	(_mm512_mask_fnmadd_round_ph): Likewise.
	(_mm512_mask3_fnmadd_round_ph): Likewise.
	(_mm512_maskz_fnmadd_round_ph): Likewise.
	(_mm512_fmsub_ph): Likewise.
	(_mm512_mask_fmsub_ph): Likewise.
	(_mm512_mask3_fmsub_ph): Likewise.
	(_mm512_maskz_fmsub_ph): Likewise.
	(_mm512_fmsub_round_ph): Likewise.
	(_mm512_mask_fmsub_round_ph): Likewise.
	(_mm512_mask3_fmsub_round_ph): Likewise.
	(_mm512_maskz_fmsub_round_ph): Likewise.
	(_mm512_fnmsub_ph): Likewise.
	(_mm512_mask_fnmsub_ph): Likewise.
	(_mm512_mask3_fnmsub_ph): Likewise.
	(_mm512_maskz_fnmsub_ph): Likewise.
	(_mm512_fnmsub_round_ph): Likewise.
	(_mm512_mask_fnmsub_round_ph): Likewise.
	(_mm512_mask3_fnmsub_round_ph): Likewise.
	(_mm512_maskz_fnmsub_round_ph): Likewise.
	* config/i386/avx512fp16vlintrin.h (_mm256_fmadd_ph):
	New intrinsic.
	(_mm256_mask_fmadd_ph): Likewise.
	(_mm256_mask3_fmadd_ph): Likewise.
	(_mm256_maskz_fmadd_ph): Likewise.
	(_mm_fmadd_ph): Likewise.
	(_mm_mask_fmadd_ph): Likewise.
	(_mm_mask3_fmadd_ph): Likewise.
	(_mm_maskz_fmadd_ph): Likewise.
	(_mm256_fnmadd_ph): Likewise.
	(_mm256_mask_fnmadd_ph): Likewise.
	(_mm256_mask3_fnmadd_ph): Likewise.
	(_mm256_maskz_fnmadd_ph): Likewise.
	(_mm_fnmadd_ph): Likewise.
	(_mm_mask_fnmadd_ph): Likewise.
	(_mm_mask3_fnmadd_ph): Likewise.
	(_mm_maskz_fnmadd_ph): Likewise.
	(_mm256_fmsub_ph): Likewise.
	(_mm256_mask_fmsub_ph): Likewise.
	(_mm256_mask3_fmsub_ph): Likewise.
	(_mm256_maskz_fmsub_ph): Likewise.
	(_mm_fmsub_ph): Likewise.
	(_mm_mask_fmsub_ph): Likewise.
	(_mm_mask3_fmsub_ph): Likewise.
	(_mm_maskz_fmsub_ph): Likewise.
	(_mm256_fnmsub_ph): Likewise.
	(_mm256_mask_fnmsub_ph): Likewise.
	(_mm256_mask3_fnmsub_ph): Likewise.
	(_mm256_maskz_fnmsub_ph): Likewise.
	(_mm_fnmsub_ph): Likewise.
	(_mm_mask_fnmsub_ph): Likewise.
	(_mm_mask3_fnmsub_ph): Likewise.
	(_mm_maskz_fnmsub_ph): Likewise.
	* config/i386/i386-builtin.def: Add corresponding new builtins.
	* config/i386/sse.md
	(<avx512>_fmadd_<mode>_maskz<round_expand_name>): Adjust to
	support HF vector modes.
	(<sd_mask_codefor>fma_fmadd_<mode><sd_maskz_name><round_name>):
	Ditto.
	(*<sd_mask_codefor>fma_fmadd_<mode><sd_maskz_name>_bcst_1): Ditto.
	(*<sd_mask_codefor>fma_fmadd_<mode><sd_maskz_name>_bcst_2): Ditto.
	(*<sd_mask_codefor>fma_fmadd_<mode><sd_maskz_name>_bcst_3): Ditto.
	(<avx512>_fmadd_<mode>_mask<round_name>): Ditto.
	(<avx512>_fmadd_<mode>_mask3<round_name>): Ditto.
	(<avx512>_fmsub_<mode>_maskz<round_expand_name>): Ditto.
	(<sd_mask_codefor>fma_fmsub_<mode><sd_maskz_name><round_name>):
	Ditto.
	(*<sd_mask_codefor>fma_fmsub_<mode><sd_maskz_name>_bcst_1): Ditto.
	(*<sd_mask_codefor>fma_fmsub_<mode><sd_maskz_name>_bcst_2): Ditto.
	(*<sd_mask_codefor>fma_fmsub_<mode><sd_maskz_name>_bcst_3): Ditto.
	(<avx512>_fmsub_<mode>_mask<round_name>): Ditto.
	(<avx512>_fmsub_<mode>_mask3<round_name>): Ditto.
	(<sd_mask_codefor>fma_fnmadd_<mode><sd_maskz_name><round_name>):
	Ditto.
	(*<sd_mask_codefor>fma_fnmadd_<mode><sd_maskz_name>_bcst_1): Ditto.
	(*<sd_mask_codefor>fma_fnmadd_<mode><sd_maskz_name>_bcst_2): Ditto.
	(*<sd_mask_codefor>fma_fnmadd_<mode><sd_maskz_name>_bcst_3): Ditto.
	(<avx512>_fnmadd_<mode>_mask<round_name>): Ditto.
	(<avx512>_fnmadd_<mode>_mask3<round_name>): Ditto.
	(<avx512>_fnmsub_<mode>_maskz<round_expand_name>): Ditto.
	(<sd_mask_codefor>fma_fnmsub_<mode><sd_maskz_name><round_name>):
	Ditto.
	(*<sd_mask_codefor>fma_fnmsub_<mode><sd_maskz_name>_bcst_1): Ditto.
	(*<sd_mask_codefor>fma_fnmsub_<mode><sd_maskz_name>_bcst_2): Ditto.
	(*<sd_mask_codefor>fma_fnmsub_<mode><sd_maskz_name>_bcst_3): Ditto.
	(<avx512>_fnmsub_<mode>_mask<round_name>): Ditto.
	(<avx512>_fnmsub_<mode>_mask3<round_name>): Ditto.

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 fot new intrinsics.
	* gcc.target/i386/sse-22.c: Ditto.