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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [pr18628.c] - Blame information for rev 867

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Line No. Rev Author Line
1 149 jeremybenn
/* { dg-do link } */
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/* { dg-options "-O2" } */
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/* PR middle-end/18628 exposed a problem in which cse folded a load
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   from a jump table into the label that was the target of the branch.
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   Unfortunately, the indirect jump was moved to a different basic
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   block, and the LABEL_REF copied to the register wasn't enough to
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   keep the cfg from optimizing the otherwise-unused label away.  So
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   we ended up with a dangling reference to the label.  */
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int i;
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int main()
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{
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  for (;;)
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  {
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    switch (i)
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    {
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      case 0:
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      case 1:
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        return 1;
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      case 2:
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      case 3:
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        return 0;
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      case 5:
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        --i;
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    }
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  }
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}

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