================
@@ -2202,6 +2205,40 @@ void DAGTypeLegalizer::SplitVecRes_VP_SPLAT(SDNode *N,
SDValue &Lo,
Hi = DAG.getNode(N->getOpcode(), dl, HiVT, N->getOperand(0), MaskHi, EVLHi);
}
+void DAGTypeLegalizer::SplitVecRes_ATOMIC_LOAD(AtomicSDNode *LD, SDValue &Lo,
+ SDValue &Hi) {
+ assert(LD->getExtensionType() == ISD::NON_EXTLOAD &&
+ "Extended load during type legalization!");
+ SDLoc dl(LD);
+ EVT VT = LD->getValueType(0);
+ EVT LoVT, HiVT;
+ std::tie(LoVT, HiVT) = DAG.GetSplitDestVTs(VT);
+
+ SDValue Ch = LD->getChain();
+ SDValue Ptr = LD->getBasePtr();
+
+ EVT IntVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
+ EVT MemIntVT =
+ EVT::getIntegerVT(*DAG.getContext(), LD->getMemoryVT().getSizeInBits());
+ SDValue ALD = DAG.getAtomicLoad(ISD::NON_EXTLOAD, dl, MemIntVT, IntVT, Ch,
+ Ptr, LD->getMemOperand());
+
+ EVT LoIntVT = EVT::getIntegerVT(*DAG.getContext(), LoVT.getSizeInBits());
+ EVT HiIntVT = EVT::getIntegerVT(*DAG.getContext(), HiVT.getSizeInBits());
+ SDValue ExtractLo = DAG.getNode(ISD::TRUNCATE, dl, LoIntVT, ALD);
+ SDValue ExtractHi =
+ DAG.getNode(ISD::SRL, dl, IntVT, ALD,
+ DAG.getIntPtrConstant(VT.getSizeInBits() / 2, dl));
+ ExtractHi = DAG.getNode(ISD::TRUNCATE, dl, HiIntVT, ExtractHi);
----------------
RKSimon wrote:
Why not use SplitInteger?
https://github.com/llvm/llvm-project/pull/165818
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