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/* For PR tree-optimization/14784  */

/* { dg-do compile } */

/* { dg-options "-O2 -funswitch-loops -fdump-tree-unswitch-details" } */

typedef struct bitmap_element_def

{

  unsigned int indx;

} bitmap_element;

typedef struct bitmap_head_def {

    bitmap_element *first;

    int using_obstack;

} bitmap_head;

typedef struct bitmap_head_def *bitmap;

bitmap_element *bitmap_free;

void foo (bitmap head, bitmap_element *elt)

{

  while (1)

    {

      /* Alias analysis problems used to prevent us from recognizing

         that this condition is invariant.  */

      if (head->using_obstack)

        bitmap_free = elt;

    }

}

/* { dg-final { scan-tree-dump-times "Unswitching" 1 "unswitch"} } */

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