re PR target/79481 (AVX512PF: unmasked gather prefetch intrinsics missing)

re PR target/79481 (AVX512PF: unmasked gather prefetch intrinsics missing)

	PR target/79481
	* config/i386/avx512pfintrin.h (_mm512_prefetch_i32gather_pd,
	_mm512_prefetch_i32gather_ps, _mm512_prefetch_i64gather_pd,
	_mm512_prefetch_i64gather_ps): New inline functions and macros.

	* gcc.target/i386/sse-14.c (test_2vx): Add void return type.
	(test_3vx): Change return type from int to void.
	(_mm512_prefetch_i32gather_ps, _mm512_prefetch_i32scatter_ps,
	_mm512_prefetch_i64gather_ps, _mm512_prefetch_i64scatter_ps,
	_mm512_prefetch_i32gather_pd, _mm512_prefetch_i32scatter_pd,
	_mm512_prefetch_i64gather_pd, _mm512_prefetch_i64scatter_pd): New
	tests.
	* gcc.target/i386/sse-22.c (test_2vx): Add void return type.
	(test_3vx): Change return type from int to void.
	(_mm512_prefetch_i32gather_ps, _mm512_prefetch_i32scatter_ps,
	_mm512_prefetch_i64gather_ps, _mm512_prefetch_i64scatter_ps,
	_mm512_prefetch_i32gather_pd, _mm512_prefetch_i32scatter_pd,
	_mm512_prefetch_i64gather_pd, _mm512_prefetch_i64scatter_pd): New
	tests.
	* gcc.target/i386/avx512pf-vgatherpf0dpd-1.c: Add non-masked
	intrinsic.  Change scan-assembler-times number from 1 to 2.
	* gcc.target/i386/avx512pf-vgatherpf0dps-1.c: Likewise.
	* gcc.target/i386/avx512pf-vgatherpf0qpd-1.c: Likewise.
	* gcc.target/i386/avx512pf-vgatherpf0qps-1.c: Likewise.
	* gcc.target/i386/avx512pf-vgatherpf1dpd-1.c: Likewise.
	* gcc.target/i386/avx512pf-vgatherpf1dps-1.c: Likewise.
	* gcc.target/i386/avx512pf-vgatherpf1qpd-1.c: Likewise.
	* gcc.target/i386/avx512pf-vgatherpf1qps-1.c: Likewise.

From-SVN: r245444