[MLton-devel] cvs commit: Word64 is there

[Matthew Fluet]

>   Word64 is implemented, much as Int64 is, with _import for all the
>   primitives.  This is especially bad for coercions that bounce through
>   LargeWord (which is now Word64), since they will involve a couple of C
>   calls and cannot be simplified away.

Would it be worth designating a class of primitives that get translated to
C calls at the translation to RSSA or to Machine?  I understand that we
can't optimize word conversions because the the calls are to C and not to
primitives.

>   Hopefully the Word64 primitives can be added to the x86 codegen at the
>   same time as the Int64 ones.

Yeah, there's virtually no difference between them at the codegen level.



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