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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [tree-ssa/] [pr21294.c] - Blame information for rev 298

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Line No. Rev Author Line
1 298 jeremybenn
/* PR tree-optimization/21294
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   VRP did not notice that an address of the form &p->i is nonnull
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   when p is known to be nonnull.  In this testcase, noticing that
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   allows us to eliminate the second "if" statement.  */
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/* { dg-do compile } */
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/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-vrp1-details" } */
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struct f {
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  int i;
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};
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int
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foo (struct f *p)
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{
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  if (p != 0)
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    if (&p->i != 0)
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      return 123;
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  return 0;
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}
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/* { dg-final { scan-tree-dump-times "Folding predicate" 1 "vrp1"} } */
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/* { dg-final { cleanup-tree-dump "vrp1" } } */

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