1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -mavx512f -mvzeroupper" } */
       3  
       4  #include <immintrin.h>
       5  
       6  __m128
       7  foo1 (__m256 x)
       8  {
       9    return _mm256_castps256_ps128 (x);
      10  }
      11  
      12  void
      13  foo2 (float *p, __m256 x)
      14  {
      15    *p = ((__v8sf)x)[0];
      16  }
      17  
      18  void
      19  foo3 (float *p, __m512 x)
      20  {
      21    *p = ((__v16sf)x)[0];
      22  }
      23  
      24  /* { dg-final { scan-assembler-not "vzeroupper" } } */