[PATCH] D70093: [InstCombine] Avoid moving ops that do restrict undef across shuffles.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:1513
+    }
+  };
+
----------------
@spatel Do we have an existing helper for something like this? I know you added getKnownUndefForVectorBinop to the DAG


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  https://reviews.llvm.org/D70093/new/

https://reviews.llvm.org/D70093