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https://opencores.org/ocsvn/openrisc/openrisc/trunk
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Rev 816 |
Rev 826 |
/* { dg-do compile } */
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/* { dg-do compile } */
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/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr-details" } */
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/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr-details" } */
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int
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int
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t(int a)
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t(int a)
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{
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{
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int r;
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int r;
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if (a&1)
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if (a&1)
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r = t(a-1);
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r = t(a-1);
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else if (a)
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else if (a)
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r = t(a-2);
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r = t(a-2);
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else
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else
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return 0;
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return 0;
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if (r)
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if (r)
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r=r;
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r=r;
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return r;
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return r;
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}
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}
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/* { dg-final { scan-tree-dump-times "Eliminated tail recursion" 2 "tailr1"} } */
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/* { dg-final { scan-tree-dump-times "Eliminated tail recursion" 2 "tailr1"} } */
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/* { dg-final { cleanup-tree-dump "tailr\[1-2\]" } } */
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/* { dg-final { cleanup-tree-dump "tailr\[1-2\]" } } */
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