[Libre-soc-bugs] [Bug 684] XLEN-16 fails when XLEN=8

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=684

--- Comment #13 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #11)
> (In reply to Luke Kenneth Casson Leighton from comment #10)

> if we do add a XLTRUNC function, I think it should truncate/zero-extend to
> XLEN, so XLTRUNC(UI) is valid for XLEN <, =, or > 16. perhaps we should
> instead call it XLCASTU, and have a corresponding sign-extending/truncating
> XLCASTS function.

that makes sense

(In reply to Jacob Lifshay from comment #12)
> we will also probably want functions for the much-more-complex
> floating-point XLEN handling

ah these i was planning to just totally cheat, and override the
function names.  e.g. DOUBLE2SINGLE gets redirected to SINGLE2HALF

have to see when we get to it.

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