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

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:5016
   case ISD::OR:
-    if (isKnownNeverZero(Op.getOperand(1)) ||
-        isKnownNeverZero(Op.getOperand(0)))
+    return isKnownNeverZero(Op.getOperand(0), Depth) ||
+           isKnownNeverZero(Op.getOperand(1), Depth);
----------------
I assume we checked operand 1 first to favor the cheap case of a non-zero constant right hand side.


Repository:
  rG LLVM Github Monorepo

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

https://reviews.llvm.org/D149199