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[RISCV] Use CONCAT_VECTORS instead of INSERT_SUBVECTOR. NFC. #164226

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Merged
merged 1 commit into from
Oct 21, 2025
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[RISCV] Use CONCAT_VECTORS instead of INSERT_SUBVECTOR. NFC. #164226

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5 changes: 1 addition & 4 deletions llvm/lib/Target/RISCV/RISCVISelLowering.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -12649,10 +12649,7 @@ SDValue RISCVTargetLowering::lowerVECTOR_REVERSE(SDValue Op,
Lo = DAG.getNode(ISD::VECTOR_REVERSE, DL, LoVT, Lo);
Hi = DAG.getNode(ISD::VECTOR_REVERSE, DL, HiVT, Hi);
// Reassemble the low and high pieces reversed.
// FIXME: This is a CONCAT_VECTORS.
SDValue Res = DAG.getInsertSubvector(DL, DAG.getUNDEF(VecVT), Hi, 0);
return DAG.getInsertSubvector(DL, Res, Lo,
LoVT.getVectorMinNumElements());
return DAG.getNode(ISD::CONCAT_VECTORS, DL, VecVT, Hi, Lo);
}

// Just promote the int type to i16 which will double the LMUL.
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