[PATCH] D123801: [DAG][PowerPC] Combine shuffle(bitcast(X), Mask) to bitcast(shuffle(X, Mask'))

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:22001
+    NewMask.push_back(Base);
+  }
+
----------------
If we moved scaleShuffleElements from X86ISelLowering.cpp inside ShuffleVectorSDNode as a static helper (like commuteMask) - could we reuse it here?


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  https://reviews.llvm.org/D123801/new/

https://reviews.llvm.org/D123801