[PATCH] D149199: [SelectionDAG] Fill in some more cases in `isKnownNeverZero`

Noah Goldstein via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sat May 13 10:11:01 PDT 2023


goldstein.w.n added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:5078
+    // The expression is really !Known.One[BitWidth-MaxLog2(Known):0].isZero()
+    if (computeKnownBits(Op.getOperand(0)).One[0], Depth + 1)
       return true;
----------------
RKSimon wrote:
> This looks like a bad merge?
hmm?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D149199/new/

https://reviews.llvm.org/D149199



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