gcc/testsuite/gcc.target/i386/avx512f-vrsqrt14ss-1.c

/* { dg-do compile } */
/* { dg-options "-mavx512f -O2" } */
/* { dg-final { scan-assembler-times "vrsqrt14ss\[ \\t\]+\[^\n\]*%xmm\[0-9\]\[^\{\]" 1 } } */

#include <immintrin.h>

volatile __m128 x1, x2;

void extern
avx512f_test (void)
{
  x1 = _mm_rsqrt14_ss (x1, x2);
}