1  /* { dg-do compile } */
       2  /* { dg-options "-w -O1 -fdump-tree-optimized" } */
       3  
       4  #define vector __attribute((vector_size(16) ))
       5  vector float a;
       6  
       7  float f(float b)
       8  {
       9    vector float c = {0, 0, 0, 0};
      10    vector float d = {0, 0, 0, 0};
      11    d += c;
      12    return ((float*)&c)[2];
      13  }
      14  
      15  /* We should be able to optimize this to just "return 0.0;" */
      16  /* { dg-final { scan-tree-dump-times "BIT_FIELD_REF" 0 "optimized"} } */
      17  /* { dg-final { scan-tree-dump-times " 0\\\.0" 1 "optimized"} } */
      18  
      19