Date: Wed, 24 Jan 2018 16:48:53 -0500 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: Updating Unicode support On Tue, Jan 23, 2018 at 10:26:02PM -0800, Eric Pruitt wrote: > On Tue, Jan 23, 2018 at 04:51:33PM -0800, Eric Pruitt wrote: > > On Tue, Jan 23, 2018 at 06:38:57PM -0500, Rich Felker wrote: > > > OK. With this in mind, I hope you're also aware that musl's Unicode > > > tables are all highly optimized for size and (aside from case mapping) > > > very good speed relative to their size, and are generated mechanically > > > from the UCD files via some ugly code here: > > > > > > https://github.com/richfelker/musl-chartable-tools > > I updated my copy of musl to 1.1.18 then recompiled it with and without > my utf8proc changes using GCC 6.3.0 "-O3" targeting Linux 4.9.0 / > x86_64: > > - Original implementation: 2,762,774B (musl-1.1.18/lib/libc.a) > - utf8proc implementation: 3,055,954B (musl-1.1.18/lib/libc.a) > - The utf8proc implementation is ~11% larger. I didn't do any > performance comparisons. You're comparing the whole library, not character tables. If you compare against all of ctype, it's a 15x size increase. If you compare against just wcwidth, it's a 69x increase. Rich
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