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/* { dg-do compile } */

/* { dg-options "-O2 -fdump-tree-cddce" } */

struct rtx_def;

typedef struct rtx_def *rtx;

extern const char rtx_class[];

union rtunion_def

{

  rtx rtx;

};

typedef union rtunion_def rtunion;

struct rtx_def

{

  int code;

  rtunion fld[1];

};

static int

can_move_up (rtx insn, int n_insns)

{

  while (n_insns > 0)

    {

      insn = (((insn)->fld[1]).rtx);

      if (((rtx_class[(int) (((insn)->code))]) == 'i'))

        n_insns--;

    }

  return n_insns <= 0;

}

int

com (rtx insn, int blah)

{

  if (!can_move_up (insn, blah))

    foo ();

}

/* Cddce cannot remove possibly infinite loops and there is no way how to

   determine whether the loop in can_move_up ends.  */

/* { dg-final { scan-tree-dump "if " "cddce"} } */

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