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/* { dg-do compile } */

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

/* Check that the initial values are honored when necessary.  */

void link_error (void);

/* The call to link_error cannot be eliminated in this case.  */

void test1 (int param1, int param2, int x)

{

  if (param1)

    x = 3;

  if (param2)

    if (x != 3)

      link_error ();

}

/* The call to link_error cannot be eliminated in this case.  */

int global;

void test2 (int param1, int param2)

{

  if (param1)

    global = 3;

  if (param2)

    if (global != 3)

      link_error ();

}

/* In this case, we can eliminate the call, as unless "local" is set

   to 3, its value is undefined.  */

void test3 (int param1, int param2)

{

  int local;

  if (param1)

    local = 3;

  if (param2)

    if (local != 3)

      link_error ();

}

/* { dg-final { scan-tree-dump-times "link_error" 2 "optimized" } } */

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