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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" } } */
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