[PATCH] D35989: [SCEV][NFC] Introduces expression sizes estimation

[Max Kazantsev via Phabricator via llvm-commits]

mkazantsev requested review of this revision.
mkazantsev added a comment.

Re-requesting review per Daniil's comment above. @sanjoy , is this overhead acceptable? I can come up with an alternative maps-based solution if it is not (i.e. only calculate this size for those SCEVs where we need it).


https://reviews.llvm.org/D35989