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/* { dg-do compile } */

/* { dg-options "-O2 -fdump-tree-optimized -ffast-math" } */

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 "\\\+" 2 "optimized"} } */

/* { dg-final { cleanup-tree-dump "optimized" } } */