[PATCH] D41811: X86: Add pattern matching for PMADDWD

[Zvi Rackover via Phabricator via llvm-commits]

zvi added inline comments.


================
Comment at: lib/CodeGen/SelectionDAG/DAGCombiner.cpp:8780
 
+  if (N0.getOpcode() == ISD::EXTRACT_SUBVECTOR) {
+    SDValue N00 = N0.getOperand(0);
----------------
RKSimon wrote:
> Add comment describing the combine - any chance that you can add additional tests for this?
Sure.


https://reviews.llvm.org/D41811