re PR target/90125 (Typo of AVX512 intrinsics)

re PR target/90125 (Typo of AVX512 intrinsics)

	PR target/90125
	* config/i386/avx512fintrin.h (_mm_maskz_fmadd_round_sd,
	_mm_maskz_fmadd_round_ss, _mm_maskz_fmsub_round_sd,
	_mm_maskz_fmsub_round_ss, _mm_maskz_fnmadd_round_sd,
	_mm_maskz_fnmadd_round_ss, _mm_maskz_fnmsub_round_sd,
	_mm_maskz_fnmsub_round_ss): Use _maskz builtin instead of _mask3.

	PR target/90125
	* gcc.target/i386/avx512f-vfmsubXXXss-2.c (avx512f_test): Adjust
	constants to ensure precise result even when not using fma.
	* gcc.target/i386/avx512f-vfnmaddXXXss-2.c (avx512f_test): Likewise.
	* gcc.target/i386/avx512f-vfmaddXXXsd-3.c: New test.
	* gcc.target/i386/avx512f-vfmaddXXXss-3.c: New test.
	* gcc.target/i386/avx512f-vfmsubXXXsd-3.c: New test.
	* gcc.target/i386/avx512f-vfmsubXXXss-3.c: New test.
	* gcc.target/i386/avx512f-vfnmaddXXXsd-3.c: New test.
	* gcc.target/i386/avx512f-vfnmaddXXXss-3.c: New test.
	* gcc.target/i386/avx512f-vfnmsubXXXsd-3.c: New test.
	* gcc.target/i386/avx512f-vfnmsubXXXss-3.c: New test.

From-SVN: r270421