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2014 Jul 11
2
[LLVMdev] Lowering to return multiple values: codeGen, instruction write one value to the input register.
Hi All,
In XCore backend, I saw
“
…...
EVT VT = Op.getValueType();
SDValue Data =
DAG.getNode(XCoreISD::CRC8, DL, DAG.getVTList(VT, VT),
Op.getOperand(1), Op.getOperand(2) , Op.getOperand(3));
SDValue Crc(Data.getNode(), 1);
SDValue Results[] = { Crc, Data };
return DAG.getMergeValues(Results, 2, DL);
“ which is used to lower an