[PATCH] [CodeGenPrepare.cpp] Feedback on changing logic when to convert select to branch

[hfinkel at anl.gov]

This change concerns me, there are certainly targets on which the branch really is always more expensive. If you need to make the TLI interface more expressive, then feel free to do so, but don't remove a target's ability to turn off the select to branch conversion.

http://reviews.llvm.org/D5998