[PATCH] D102501: [CodeGen] Add support for widening INSERT_SUBVECTOR operands

[David Sherwood via Phabricator via llvm-commits]

david-arm added inline comments.


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Comment at: llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp:4839
+SDValue DAGTypeLegalizer::WidenVecOp_INSERT_SUBVECTOR(SDNode *N) {
+  ConstantSDNode *CstIdx = dyn_cast<ConstantSDNode>(N->getOperand(2));
+  bool IsZeroIdx = CstIdx && CstIdx->isNullValue();
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frasercrmck wrote:
> The index operand is required to be a constant. Perhaps we can be stricter here?
Ah ok, you mean we can simply use cast<ConstantSDNode> here?


Repository:
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  https://reviews.llvm.org/D102501/new/

https://reviews.llvm.org/D102501