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/* { dg-do compile } */
/* { dg-options "-w -O1 -fdump-tree-optimized" } */
 
#define vector __attribute((vector_size(16) ))
vector float a;
 
float f(float b)
{
  vector float c = {0, 0, 0, 0};
  vector float d = {0, 0, 0, 0};
  d += c;
  return ((float*)&c)[2];
}
 
/* We should be able to optimize this to just "return 0.0;" */
/* { dg-final { scan-tree-dump-times "BIT_FIELD_REF" 0 "optimized"} } */
/* { dg-final { scan-tree-dump-times "0.0" 1 "optimized"} } */
 
/* { dg-final { cleanup-tree-dump "optimized" } } */