[PATCH] D28979: [X86] Add demanded elts support for the inputs to pclmul intrinsic

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: lib/Transforms/InstCombine/InstCombineCalls.cpp:2197
+    }
+    break;
+  }
----------------
Add support for detecting all undef with UndefElts?


https://reviews.llvm.org/D28979