[PATCH] [PeepholeOptimizer] Refactor the advance copy optimization to take advantage of the isRegSequence property

[Quentin Colombet]

Thanks for asking!

The TargetInstrInfo is optional for the ValueTracker but not for the PeepholeOptimizer. isLoadFoldable is part of the PeepholeOptimizer.

That said, this is possible I missed some uses in the ValueTracker, but if it is the case, I do not see them!

-Quentin

http://reviews.llvm.org/D4874