Shaping is slow in Miri

[LoganDark]

Shaping is slow in Miri.

Constructing a font is relatively fast, but shaping anything... well, I tried to shape the string "a" and it never finished.

I tried to use the OutlineBuilder however, and it immediately started emitting instructions to the OutlineSink.

So shaping specifically is doing something that Miri really does not like.

Also I found servo/pathfinder#516 lol

[wezm]

Not really sure I can do much here as I'm not familiar with miri internals. It might be best raised as an issue on the miri repo with a minimum reproduction.

[LoganDark]

I think miri supports some sort of tracing or profiling; trying to find it. I'll let you know if there is something you can do.

[wezm]

Might close this since I think it's more a MIRI issue than an Allsorts issue.