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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [tree-ssa/] [20040319-1.c] - Blame information for rev 867

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Line No. Rev Author Line
1 149 jeremybenn
/* { dg-do run } */
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/* { dg-options "-O2" } */
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/* Test derived from PR 14643.  When a function has no addressable
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   variables but 2 or more pointers have conflicting memory tags, they
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   were not being processed by the type based alias analyzer,
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   resulting in optimizations removing a non-redundant load.  */
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extern void abort (void);
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struct bar { int count;  int *arr;};
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void foo (struct bar *b)
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{
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  b->count = 0;
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  *(b->arr) = 2;
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  if (b->count == 0)     /* b->count can't be assumed to be 0 here.  */
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    abort ();
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}
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main ()
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{
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  struct bar x;
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  x.arr = &x.count;
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  foo (&x);
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  return 0;
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}

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