[Mono-dev] Having trouble getting tail. callvirt to work

Stefan O'Rear stefanor at cox.net
Sun Nov 14 17:48:24 EST 2010

On Sun, Nov 14, 2010 at 01:15:00PM -0500, Miguel de Icaza wrote:
[ on the tail. prefix ]
> It is one of those "It would be nice to have", but we have plenty of large
> tasks that are taking our time, including our new garbage collector, various
> ports and supports to platforms that help fund the Mono team and many bug
> fixes.
> Although I could say "we accept patches", I understand that patches to
> implement full tail call optimizations are beyond the means of most hackers.

I take that as a challenge.

>   Hence, let me propose that another way of making sure we have the spare
> cycles to look into this is to take bugs away from us.
> By going to bugzilla and fixing bugs, and implementing features that other
> members in the community need, you release us from doing some of that work.
>   It also has the advantage that you do not have to be a runtime expert to
> help, you can pick any of the bugs that we have in our plate in any space
> that you are an expert on, or you want to become an export on.

Sounds like fun.

Do you have anything like a "new runtime hacker's orientation" document?
I still don't really understand a lot of the basic concepts in Mono.

For instance, I'm trying to figure out why ldftn/calli is 70 times slower
than delegates in a kernel I'm working on, and it seems to be spending
most of that time in common_call_trampoline, but I can't figure out what
that function is supposed to do.

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