Many AVX512 vector operations can broadcast from a scalar memory source.
This patch enables memory broadcast for FNMADD operations.  In order to
support AVX512 memory broadcast for FNMADD, FNMADD builtin functions are
also added, instead of passing the negated value to FMA builtin functions.

gcc/

	PR target/72782
	* config/i386/avx512fintrin.h (_mm512_fnmadd_round_pd): Use
	__builtin_ia32_vfnmaddpd512_mask.
	(_mm512_mask_fnmadd_round_pd): Likewise.
	(_mm512_fnmadd_pd): Likewise.
	(_mm512_mask_fnmadd_pd): Likewise.
	(_mm512_maskz_fnmadd_round_pd): Use
	__builtin_ia32_vfnmaddpd512_maskz.
	(_mm512_maskz_fnmadd_pd): Likewise.
	(_mm512_fnmadd_round_ps): Use __builtin_ia32_vfnmaddps512_mask.
	(_mm512_mask_fnmadd_round_ps): Likewise.
	(_mm512_fnmadd_ps): Likewise.
	(_mm512_mask_fnmadd_ps): Likewise.
	(_mm512_maskz_fnmadd_round_ps): Use
	__builtin_ia32_vfnmaddps512_maskz.
	(_mm512_maskz_fnmadd_ps): Likewise.
	* config/i386/avx512vlintrin.h (_mm256_mask_fnmadd_pd): Use
	__builtin_ia32_vfnmaddpd256_mask.
	(_mm256_maskz_fnmadd_pd): Use __builtin_ia32_vfnmaddpd256_maskz.
	(_mm_mask_fnmadd_pd): Use __builtin_ia32_vfmaddpd128_mask
	(_mm_maskz_fnmadd_pd): Use __builtin_ia32_vfnmaddpd128_maskz.
	(_mm256_mask_fnmadd_ps): Use __builtin_ia32_vfnmaddps256_mask.
	(_mm256_mask_fnmadd_ps): Use __builtin_ia32_vfnmaddps256_mask.
	(_mm256_maskz_fnmadd_ps): Use __builtin_ia32_vfnmaddps256_maskz.
	(_mm_mask_fnmadd_ps): Use __builtin_ia32_vfnmaddps128_mask.
	(_mm_maskz_fnmadd_ps): Use __builtin_ia32_vfnmaddps128_maskz.
	* config/i386/fmaintrin.h (_mm_fnmadd_pd): Use
	__builtin_ia32_vfnmaddpd.
	(_mm256_fnmadd_pd): Use __builtin_ia32_vfnmaddpd256.
	(_mm_fnmadd_ps): Use __builtin_ia32_vfnmaddps.
	(_mm256_fnmadd_ps): Use __builtin_ia32_vfnmaddps256.
	(_mm_fnmadd_sd): Use __builtin_ia32_vfnmaddsd3.
	(_mm_fnmadd_ss): Use __builtin_ia32_vfnmaddss3.
	* config/i386/i386-builtin.def: Add
	__builtin_ia32_vfnmaddpd256_mask,
	__builtin_ia32_vfnmaddpd256_maskz,
	__builtin_ia32_vfnmaddpd128_mask,
	__builtin_ia32_vfnmaddpd128_maskz,
	__builtin_ia32_vfnmaddps256_mask,
	__builtin_ia32_vfnmaddps256_maskz,
	__builtin_ia32_vfnmaddps128_mask,
	__builtin_ia32_vfnmaddps128_maskz,
	__builtin_ia32_vfnmaddpd512_mask,
	__builtin_ia32_vfnmaddpd512_maskz,
	__builtin_ia32_vfnmaddps512_mask,
	__builtin_ia32_vfnmaddps512_maskz, __builtin_ia32_vfnmaddss3,
	__builtin_ia32_vfnmaddsd3, __builtin_ia32_vfnmaddps,
	__builtin_ia32_vfnmaddpd, __builtin_ia32_vfnmaddps256 and.
	__builtin_ia32_vfnmaddpd256.
	* config/i386/sse.md (fma4i_fnmadd_<mode>): New.
	(<avx512>_fnmadd_<mode>_maskz<round_expand_name>): Likewise.
	(*<sd_mask_codefor>fma_fnmadd_<mode><sd_maskz_name>_bcst_1):
	Likewise.
	(*<sd_mask_codefor>fma_fnmadd_<mode><sd_maskz_name>_bcst_2):
	Likewise.
	(*<sd_mask_codefor>fma_fnmadd_<mode><sd_maskz_name>_bcst_3):
	Likewise.
	(fmai_vmfnmadd_<mode><round_name>): Likewise.

gcc/testsuite/

	PR target/72782
	* gcc.target/i386/avx512f-fnmadd-df-zmm-1.c: New test.
	* gcc.target/i386/avx512f-fnmadd-sf-zmm-1.c: Likewise.
	* gcc.target/i386/avx512f-fnmadd-sf-zmm-2.c: Likewise.
	* gcc.target/i386/avx512f-fnmadd-sf-zmm-3.c: Likewise.
	* gcc.target/i386/avx512f-fnmadd-sf-zmm-4.c: Likewise.
	* gcc.target/i386/avx512f-fnmadd-sf-zmm-5.c: Likewise.
	* gcc.target/i386/avx512f-fnmadd-sf-zmm-6.c: Likewise.
	* gcc.target/i386/avx512f-fnmadd-sf-zmm-7.c: Likewise.
	* gcc.target/i386/avx512f-fnmadd-sf-zmm-8.c: Likewise.
	* gcc.target/i386/avx512vl-fnmadd-sf-xmm-1.c: Likewise.
	* gcc.target/i386/avx512vl-fnmadd-sf-ymm-1.c: Likewise.

From-SVN: r265357