public virtual InstructionGraph Clone(
out IDictionary instructionMap,
out IDictionary valueMap)
{
InstructionGraph clone = new InstructionGraph();
instructionMap = new Hashtable();
valueMap = new Hashtable();
IList instructionNodes = GetInstructionNodes();
IList valueNodes = GetValueNodes();
foreach (InstructionNode instr in instructionNodes) {
InstructionNode cloneInstr = (InstructionNode) instr.Clone();
clone.AddNode(cloneInstr);
instructionMap[instr] = cloneInstr;
}
foreach (ValueNode val in valueNodes) {
ValueNode cloneVal = (ValueNode) val.Clone();
clone.AddNode(cloneVal);
valueMap[val] = cloneVal;
}
foreach (ValueNode val in inputValues)
clone.inputValues.Add(valueMap[val]);
foreach (ValueNode val in outputValues)
clone.outputValues.Add(valueMap[val]);
foreach (ValueNode val in valueNodes) {
if (val is RegisterValueNode) {
RegisterSet assignableRegs =
(RegisterSet) assignableRegisters[val];
clone.assignableRegisters[valueMap[val]] =
assignableRegs.Clone();
}
}
IDictionary valueProcessed = new Hashtable();
foreach (ValueNode val in valueNodes)
valueProcessed[val] = false;
foreach (ValueNode val in outputValues) {
CloneEdgesForValue(val, clone, instructionMap, valueMap,
valueProcessed);
}
foreach (ValueNode val in cyclicDependencies.Keys) {
clone.cyclicDependencies[valueMap[val]] =
valueMap[cyclicDependencies[val]];
}
return clone;
}
