[PATCH] D62969: [x86] narrow extract subvector of vector select

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: llvm/lib/Target/X86/X86ISelLowering.cpp:43172
+      !collectConcatOps(Sel.getOperand(0).getNode(), CatOps))
+    return SDValue();
+
----------------
Should we limit this to cases where all the uses of Sel.getOperand(0) are EXTRACT_SUBVECTORs?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62969/new/

https://reviews.llvm.org/D62969