From d980c46f52eb92dec9855b40410ed6b4b899f6f6 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 25 Oct 2005 20:35:14 +0000
Subject: [PATCH] Emit some boilerplate for targets

llvm-svn: 23983
---
 llvm/utils/TableGen/DAGISelEmitter.cpp | 29 ++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/llvm/utils/TableGen/DAGISelEmitter.cpp b/llvm/utils/TableGen/DAGISelEmitter.cpp
index baf6b4873cb0..32f0e64a6741 100644
--- a/llvm/utils/TableGen/DAGISelEmitter.cpp
+++ b/llvm/utils/TableGen/DAGISelEmitter.cpp
@@ -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.