[PATCH] D57639: [CodeGen] Handle vector UADDO, SADDO, USUBO, SSUBO

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp:260-266
+    EVT ScalarVT = ResVT.getVectorElementType();
+    SDValue Zero = DAG.getConstant(
+        0, DL, TLI.getVectorIdxTy(DAG.getDataLayout()));
+    ScalarLHS = DAG.getNode(
+        ISD::EXTRACT_VECTOR_ELT, DL, ScalarVT, N->getOperand(0), Zero);
+    ScalarRHS = DAG.getNode(
+        ISD::EXTRACT_VECTOR_ELT, DL, ScalarVT, N->getOperand(1), Zero);
----------------
You can use DAG.ExtractVectorELements here


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D57639/new/

https://reviews.llvm.org/D57639