GHC.Real.gcdInt is no longer optimized.
This is a regression since ghc-7.2, related to #5767 (closed). GHC.Real
defines
gcdInt :: Int -> Int -> Int
gcdInt a b = fromIntegral (gcdInteger (fromIntegral a) (fromIntegral b))
which used to optimize to GHC.Integer.Type.gcdInt
. But since fromInteger = integerToInt
and fromIntegral = smallInteger
are no longer inlined, this optimization is lost. This results in unecessary allocations.
Trac metadata
Trac field | Value |
---|---|
Version | 7.5 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | libraries/base |
Test case | |
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