LRU cache for ~=

[Andrei Alexandrescu]

Robert Jacques wrote:
> So you want to synchronize the ~= function? I thought the LRU would be 
> thread local and therefore independent of these issues, as well as being 
> faster. And if the LRU isn't thread-local, then why not make it part of 
> the GC? It would both be more general and much simpler/cleaner to 
> implement.

I think the cache should be thread-local.

Andrei