[PATCH] D48278: [SelectionDAG] Fold redundant masking operations of shifted value

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: lib/CodeGen/SelectionDAG/DAGCombiner.cpp:6104
+  SDValue MASKED = SHIFT.getOperand(0);
+  if (MASKED.getValueType().isVector() || MASKED->use_size() != 2)
+    return SDValue();
----------------
hasNUsesOfValue().  (use_size is linear in the number of uses.)


https://reviews.llvm.org/D48278