/* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-optimized" } */float a, b, c, d;extern int printf (const char *, ...);int main(void){  float e;  float f;  /* We should not be able to transform these into the same expression, and only have two additions.  */  e = a + b;  e = e + c;  f = c + a;  f = f + b;  printf ("%f %f\n", e, f);}/* { dg-final { scan-tree-dump-times "\\\+" 4 "optimized"} } *//* { dg-final { cleanup-tree-dump "optimized" } } */