On 24 Jul 2012, at 23:43, Konstantin Belousov wrote:

> As kan rightfully notes, the assumption that &%fs:0 == *%fs:0 holds for
> userspace on amd64, and the same is true for %gs userspace on i386.
> The change you committed to clang/llvm/whatever it called just breaks
> useful optimization for FreeBSD.

If you can suggest a way of differentiating the kernel and userspace 
compilation targets, then I would be happy to hear it and will make the 
appropriate change.    Until then, I would rather have slightly sub-optimal 
code in userspace than incorrect code in kernelspace.

> Sigh

Very helpful, thank you.

David_______________________________________________
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