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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [tree-ssa/] [vrp03.c] - Blame information for rev 816

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Line No. Rev Author Line
1 149 jeremybenn
/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-vrp1" } */
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struct A
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{
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  int a;
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  int b;
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};
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foo (struct A *p, struct A *q)
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{
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  int *r = 0;
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  if (p)
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    {
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      if (p == q)
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        {
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          /* This should be folded to 'if (1)' because q is [p, p]
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             and p is ~[0, 0].  */
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          if (q)
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            r = &q->a;
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          /* This should be folded to 'if (1)' because q should be
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             ~[0, 0] and thus &q->a should be ~[0, 0].  */
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          if (r)
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            return 5;
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        }
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    }
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  return q->a;
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}
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/* { dg-final { scan-tree-dump-times "Folding predicate q_.*to 1" 1 "vrp1" } } */
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/* { dg-final { scan-tree-dump-times "Folding predicate r_.*to 1" 1 "vrp1" } } */
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/* { dg-final { cleanup-tree-dump "vrp1" } } */

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