[DAG] Add TODO comment regarding ADD(X,X) -> SHL(X,1) canonicalization
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Thu, 30 Apr 2020 10:22:01 +0000 (11:22 +0100)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Thu, 30 Apr 2020 11:57:16 +0000 (12:57 +0100)
commit6547a5ceb2213dc49ba2b8a7d98913b39cb331d9
treee8cc69435988a32731cd3f9f3083538bd2543460
parent2cfeaf3b2db812432ae7d5de0493276f5f3d0919
[DAG] Add TODO comment regarding ADD(X,X) -> SHL(X,1) canonicalization

As discussed on D78935
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp