[PATCH] D48825: [DAGCombiner] Add EXTRACT_SUBVECTOR to SimplifyDemandedVectorElts

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: lib/CodeGen/SelectionDAG/TargetLowering.cpp:1487
+    unsigned NumSrcElts = Src.getValueType().getVectorNumElements();
+    APInt Idx = cast<ConstantSDNode>(Op.getOperand(1))->getAPIntValue();
+    if (Idx.uge(NumSrcElts - NumElts))
----------------
const APInt &? It doesn't look like we need a copy.


Repository:
  rL LLVM

https://reviews.llvm.org/D48825