[PATCH] D88569: [DAGCombiner] Call SimplifyDemandedBits to simplify EXTRACT_VECTOR_ELT

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Mar 29 03:07:15 PDT 2021


RKSimon added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:18650
     APInt DemandedBits = APInt::getAllOnesValue(VecEltBitWidth);
     if (SimplifyDemandedBits(VecOp, DemandedBits, DemandedElts, true)) {
       // We simplified the vector operand of this extract element. If this
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How come this isn't picking up many of these test cases? Is it being run too late?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D88569/new/

https://reviews.llvm.org/D88569



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