[PATCH] Update TargetLowering API - no longer require TLOF

[Eric Christopher]

LGTM, Thanks!

(For the record this should probably take a TargetSubtargetInfo and TLOF rather than just a TargetMachine, but that will require more work to pull and tease these things back apart. If you want to do this I can give you a brief rundown on the work, but it's non-trivial so not a blocker here).

-eric

http://reviews.llvm.org/D6246