[PATCH] D119654: [SDAG] enable binop identity constant folds for add/sub

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:2148
+      }
+    }
     return false;
----------------
You can use Constantexpr::getBinOpIdentity to check if identity constant.




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  https://reviews.llvm.org/D119654/new/

https://reviews.llvm.org/D119654