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Emit some boilerplate for targets 

llvm-svn: 23983
This commit is contained in:
Chris Lattner 2005-10-25 20:35:14 +00:00
parent c0a201c318
commit d980c46f52
1 changed files with 29 additions and 0 deletions
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29
llvm/utils/TableGen/DAGISelEmitter.cpp
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@ -1859,6 +1859,35 @@ void DAGISelEmitter::EmitInstructionSelector(std::ostream &OS) {
<< " SDOperand Tmp0 = Select(N.getOperand(0));\n"
<< " if (!N.Val->hasOneUse()) CodeGenMap[N] = Tmp0;\n"
<< " return Tmp0;\n"
<< " }\n"
<< " case ISD::TokenFactor:\n"
<< " if (N.getNumOperands() == 2) {\n"
<< " SDOperand Op0 = Select(N.getOperand(0));\n"
<< " SDOperand Op1 = Select(N.getOperand(1));\n"
<< " return CodeGenMap[N] =\n"
<< " CurDAG->getNode(ISD::TokenFactor, MVT::Other, Op0, Op1);\n"
<< " } else {\n"
<< " std::vector<SDOperand> Ops;\n"
<< " for (unsigned i = 0, e = N.getNumOperands(); i != e; ++i)\n"
<< " Ops.push_back(Select(N.getOperand(i)));\n"
<< " return CodeGenMap[N] = \n"
<< " CurDAG->getNode(ISD::TokenFactor, MVT::Other, Ops);\n"
<< " }\n"
<< " case ISD::CopyFromReg: {\n"
<< " SDOperand Chain = Select(N.getOperand(0));\n"
<< " if (Chain == N.getOperand(0)) return N; // No change\n"
<< " SDOperand New = CurDAG->getCopyFromReg(Chain,\n"
<< " cast<RegisterSDNode>(N.getOperand(1))->getReg(),\n"
<< " N.Val->getValueType(0));\n"
<< " return New.getValue(N.ResNo);\n"
<< " }\n"
<< " case ISD::CopyToReg: {\n"
<< " SDOperand Chain = Select(N.getOperand(0));\n"
<< " SDOperand Reg = N.getOperand(1);\n"
<< " SDOperand Val = Select(N.getOperand(2));\n"
<< " return CodeGenMap[N] = \n"
<< " CurDAG->getNode(ISD::CopyToReg, MVT::Other,\n"
<< " Chain, Reg, Val);\n"
<< " }\n";
// Group the patterns by their top-level opcodes.