[PATCH] D31521: DAG: Fix missing legalization for any_extend_vector_inreg operands

[Simon Pilgrim via Phabricator via llvm-commits]

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Comment at: lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp:1681
+  SDValue Lo, Hi;
+  SplitVecRes_ExtVecInRegOp(N, Lo, Hi);
+
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We don't normally do this so I think you need to comment this properly - explaining that *_EXTEND_VECTOR_INREG only reference the lower half of the input and that splitting the result has the same effect as splitting the input operand.


https://reviews.llvm.org/D31521