[gcc.git] / gcc / testsuite / gcc.dg / tree-ssa / pr21658.c

/* PR tree-optimization/21658
   CCP did not propagate an ADDR_EXPR far enough, preventing the "if"
   statement below from being folded.  */

/* { dg-do compile } */
/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-ccp-details" } */

void link_error (void);

void
f (void)
{
  int a[10];
  int *p = &a[5];
  int *q = p - 1;
  if (q != &a[4])
    link_error ();
}

/* { dg-final { scan-tree-dump-times "Folded statement: if " 1 "ccp"} } */
/* { dg-final { cleanup-tree-dump "ccp" } } */
Commit	Line	Data
46aad78f KH	1	/* PR tree-optimization/21658
	2	CCP did not propagate an ADDR_EXPR far enough, preventing the "if"
	3	statement below from being folded. */
	4
	5	/* { dg-do compile } */
	6	/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-ccp-details" } */
	7
	8	void link_error (void);
	9
	10	void
	11	f (void)
	12	{
	13	int a[10];
	14	int *p = &a[5];
	15	int *q = p - 1;
	16	if (q != &a[4])
	17	link_error ();
	18	}
	19
227858d1	20	/* { dg-final { scan-tree-dump-times "Folded statement: if " 1 "ccp"} } */
46aad78f	21	/* { dg-final { cleanup-tree-dump "ccp" } } */