================
@@ -27545,6 +27545,69 @@ static SDValue
foldExtractSubvectorFromShuffleVector(EVT NarrowVT, SDValue Src,
return DAG.getVectorShuffle(NarrowVT, DL, NewOps[0], NewOps[1], NewMask);
}
+static SDValue foldExtractSubvectorFromConcatVectors(EVT NVT, SDValue V,
+ uint64_t ExtIdx,
+ const SDLoc &DL,
+ SelectionDAG &DAG,
+ bool LegalOperations) {
+ if (V.getOpcode() != ISD::CONCAT_VECTORS)
+ return SDValue();
+
+ unsigned ExtNumElts = NVT.getVectorMinNumElements();
+ EVT ConcatSrcVT = V.getOperand(0).getValueType();
----------------
krzysz00 wrote:
Hm, maybe, but that might be confusing with the `VT` of the extract?
https://github.com/llvm/llvm-project/pull/200936
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