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/* { dg-do compile } */

/* { dg-options "-fno-strict-overflow -O2 -fdump-tree-final_cleanup" } */

/* Source: Ian Lance Taylor.  */

/* VRP test.  We can not simplify the conditional when not using

   strict overflow semantics.  We don't test this with

   -fstrict-overflow because it turns into an infinite loop.  That is

   OK but it would also be OK to not do that.  */

int

foo ()

{

  int i, bits;

  for (i = 1, bits = 1; i > 0; i += i)

    ++bits;

  return bits;

}

/* { dg-final { scan-tree-dump "return bits" "final_cleanup" } } */

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