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/* { dg-do compile } */
/* { dg-options "-O1 -foptimize-sibling-calls -fdump-tree-tailr1-details" } */
int
foo (int a)
{
if (a)
return a * (2 * (foo (a - 1))) + a + 1;
else
return 0;
}
/* { dg-final { scan-tree-dump-times "Eliminated tail recursion" 1 "tailr1"} } */
/* { dg-final { cleanup-tree-dump "tailr1" } } */
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