[PATCH] D22726: [DAGCombine] Match shift amount by value rather than relying on common sub-expressions.

[Simon Pilgrim via llvm-commits]

RKSimon added inline comments.


================
Comment at: lib/CodeGen/SelectionDAG/DAGCombiner.cpp:4941
+
+    if (!fold && isa<ConstantSDNode>(N0.getOperand(1))) {
+      APInt c1 = cast<ConstantSDNode>(N0.getOperand(1))->getAPIntValue();
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Change to use isConstOrConstSplat if you can.


Repository:
  rL LLVM

https://reviews.llvm.org/D22726