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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42573 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -427,6 +427,22 @@ return:
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//===---------------------------------------------------------------------===//
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Tail recursion elimination is not transforming this function, because it is
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returning n, which fails the isDynamicConstant check in the accumulator
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recursion checks.
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long long fib(const long long n) {
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switch(n) {
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case 0:
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case 1:
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return n;
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default:
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return fib(n-1) + fib(n-2);
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}
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}
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//===---------------------------------------------------------------------===//
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Argument promotion should promote arguments for recursive functions, like
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this:
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