[llvm] [Transforms][Utils] Add LoopSplitUtils for iteration-space loop splitting (PR #205995)

[Ashutosh Nema via llvm-commits]

================

----------------
nema-ashutosh wrote:

I may be missing your point here, L->getLoopLatch() already gives me the backedge block, and the logic below is really about picking which latch-compare operand is the induction. Could you elaborate on how getIncomingAndBackEdge would simplify this ?

https://github.com/llvm/llvm-project/pull/205995