[PATCH] D70012: [DAGCombiner] Propagate carry flag for 3+ additions

[Amaury SECHET via Phabricator via llvm-commits]

deadalnix added a comment.

Also while I'm at it, first sorry for taking so long to review, I missed that patch. Second, if I understand properly, getting node to be processed in the right order actually can collapse arbitrary long addition chains, but it's not clear how to get there, there is a bit of a wack a mole problem that start poping up every time.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D70012/new/

https://reviews.llvm.org/D70012