----- Original Message -----
> Is it possible we might be able to make MOZ_LIKELY and MOZ_UNLIKELY
> meaningful on Windows (they currently only do anything on gcc or
> clang builds)?  If we did, might that get back some of the gain from
> turning off PGO?

Nope:

http://social.msdn.microsoft.com/forums/en-US/vclanguage/thread/2dbdca4d-c0c0-40a3-993b-dc78817be26e/

A MSVC team member recommended using PGO instead. =/

-Nathan
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