[PATCH] D59208: [DAGCombiner] fold (addcarry (xor a, -1), b, c) -> (subcarry b, a, !c) and flip carry.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: lib/CodeGen/SelectionDAG/DAGCombiner.cpp:2718
+                                  const TargetLowering &TLI,
+                                  bool Force = false) {
+  if (Force && isa<ConstantSDNode>(V))
----------------
It's probably better for Force not to have a default value?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59208/new/

https://reviews.llvm.org/D59208