[RFC] type safe trees

[Mark Mitchell]

Geoff Keating wrote:

> If you're using the current HEAD, you should know that there's a bad 
> performance bug in which the GC settings are wrong when 
> --disable-checking is in effect.  If you're seeing GC happen when 
> building combine.c in a bootstrap, you either forgot 
> --disable-checking, you're seeing this bug, or you need to go buy more 
> RAM (even my laptop, with 256Mb of RAM, doesn't GC while building 
> combine.c with the computed --param ggc-min-heapsize=65536).

Would you please describe this bug in more detail?  Do you know how to 
fix it?

-- 
Mark Mitchell
CodeSourcery, LLC
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mark@codesourcery.com