Revisit efficiency of `Integral` conversions in `stimes` implementation for `StrictByteString`
Open
blocked: ghc
performance
- Dominant language
- Haskell
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- Avg merge
- 7d 22h
- Merged PRs (30d)
- 1
Description
The goal is to avoid allocating intermediate `Integer`s when using `stimes` `@Int`, `@Word` or with other primitive types.
There's some ongoing work in GHC that should help us: https://gitlab.haskell.org/ghc/ghc/-/issues/20361. Once it is merged, we should check whether the goal has been achieved.
It may be useful to replace `checkedIntegerToInt` with `Data.Bits.toIntegralSized` then.
https://github.com/haskell/bytestring/blob/12563781f257f132f4da866047abe720623f9990/Data/ByteString/Internal.hs#L737-L787
https://github.com/haskell/bytestring/blob/12563781f257f132f4da866047abe720623f9990/Data/ByteString/Internal.hs#L868-L879
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