Re: [Sbcl-devel] improving sb-kernel:ub32-bash-copy

[Thiemo S. <th...@ne...>]

Nathan Froyd wrote:
> [Owners of 64-bit machines should mentally replace UB32 with UB64 in
> the discussion that follows.]
> 
> Christophe and anybody else who cares about boinkmarks performance will
> be happy to know that I have spent a bit of time improving the code
> for SB-KERNEL:UB32-BASH-COPY, which underpins optimized REPLACE on
> Unicode character strings.  The patch is attached and results in a
> compiled UB32-BASH-COPY that is roughly 20% shorter than the one resulting
> from the current code.  In particular, the new version does not have
> fixnum arithmetic overflow checking.

I miss here a word about the speed improvements you got. The size of a
function usually isn't that relevant.


Thiemo