1  /* { dg-do compile } */
       2  /* { dg-options "-w -O1 -fdump-tree-optimized" } */
       3  /* { dg-options "-w -O1 -fdump-tree-optimized -msse" { target { i?86-*-* x86_64-*-* } } } */
       4  
       5  #define vector __attribute__(( vector_size(16) ))
       6  
       7  float f(vector float a, int b, vector float c)
       8  {
       9    vector float dd = c*a;
      10    a = (vector float){0,0,0,0};
      11    c = (vector float){0,0,0,0};
      12    {
      13     float d = ((float*)&a)[0];
      14     float d1 = ((float*)&c)[0];
      15     return d*d1;
      16    }
      17  }
      18  
      19  /* We should be able to optimize this to just "return 0.0;" */
      20  /* { dg-final { scan-tree-dump-not "BIT_FIELD_REF" "optimized"} } */
      21  /* { dg-final { scan-tree-dump-times "return 0.0" 1 "optimized"} } */
      22