Unboxed Int32.t on 64-bit?

Ecosystem
4

Keep in mind that ocamlopt is pretty good at keeping int32 (and int64 on 64-bit platforms) unboxed within a function. This slightly contrived function, for example, reads the parameter from memory once, does all the arithmetic in registers and then allocates to return the new int32.

Furthermore, you can:

  • Control inlining on a caller or callee basis with annotations: OCaml - Optimisation with Flambda
  • Use Bytes.{set,get}_int32_le to store multiple int32s unboxed in bytes (variants without bounds checks are available as externals)
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