[PATCH] D97276: [CodeGen] Canonicalise adds/subs of i1 vectors using XOR

[David Sherwood via Phabricator via llvm-commits]

david-arm marked an inline comment as done.
david-arm added inline comments.


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Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:5312
       return N1;
+    if (Opcode == ISD::ADD && VT.isVector() &&
+        VT.getVectorElementType() == MVT::i1)
----------------
craig.topper wrote:
> Isn't this also possible for sub?
Yes it is - this is what the X86 target already seems to do. Thanks for the suggestion!


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  https://reviews.llvm.org/D97276/new/

https://reviews.llvm.org/D97276