testsuite/tests/codeGen/should_run/3561.hs


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main = print $ pqr' 0 1

pqr' :: Int -> Int -> Integer
pqr' a b | a == b - 1 = rab
         | otherwise = ram * rmb
    where m = (a + b) `div` 2
          ram = pqr' a m
          rmb = pqr' m b
          rab = toInteger (6 * b - 5) * toInteger (2 * b - 1) *
                toInteger (6 * b - 1)