[LLVMdev] Inserting nodes into SelectionDAG (X86)

[Artjom Kochtchi]

Sorry to ask again, but I still can't get it right.

The following code compiles and runs, but produces no instructions:
  Ops.push_back(DAG.getRegister(X86::EAX, MVT::i32));
  Ops.push_back(DAG.getConstant(1, MVT::i32));
  DAG.getNode(ISD::ADD, DAG.getVTList(MVT::i32), &Ops[0], Ops.size());

I reckon that has something to do with the fact that I am not using the
Chain object. But as soon as I try to chain that node, llc tells me that I
have the wrong number of operands:
  Ops.push_back(Chain);
  Ops.push_back(DAG.getRegister(X86::EAX, MVT::i32));
  Ops.push_back(DAG.getConstant(1, MVT::i32));
  Chain = DAG.getNode(ISD::ADD, DAG.getVTList(MVT::Other, MVT::i32),
&Ops[0], Ops.size());

Isn't that the way how it is supposed to work?

Artjom
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