[PATCH] D128919: [DAG] Teach isConstOrConstSplat about SPLAT_VECTORs

[Paul Walker via Phabricator via llvm-commits]

paulwalker-arm added a subscriber: reames.
paulwalker-arm added inline comments.


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Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:10616
+  EVT VT = N.getValueType();
+  APInt DemandedElts = VT.isVector()
+                           ? APInt::getAllOnes(VT.getVectorMinNumElements())
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Based on @reames's demanded elts patches I think this should be `isFixedLengthVector()`? because we now use a 1bit APInt to represent demanding all elements of a scalable vector.


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Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:10660
+  EVT VT = N.getValueType();
+  APInt DemandedElts = VT.isVector()
+                           ? APInt::getAllOnes(VT.getVectorMinNumElements())
----------------
As above.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D128919/new/

https://reviews.llvm.org/D128919