/// <summary>
/// Returns a <see cref="System.String" /> that represents this instance.
/// </summary>
/// <returns>
/// A <see cref="System.String" /> that represents this instance.
/// </returns>
public override string ToString()
{
if (IsPhysicalRegister)
{
return(PhysicalRegister.ToString());
}
else
{
return(string.Format("V_{0}", VirtualRegisterOperand.Index));
}
}
public OpcodeEncoder AppendSIB(int scale, PhysicalRegister index, PhysicalRegister @base)
{
Debug.Assert(scale == 1 || scale == 2 || scale == 4 || scale == 8);
int svalue = 0;
if (scale == 1)
{
svalue = 0;
}
else if (scale == 2)
{
svalue = 1;
}
else if (scale == 4)
{
svalue = 2;
}
else if (scale == 8)
{
svalue = 3;
}
// scale
AppendBits(svalue, 2);
// index
if (index == null)
{
Append3Bits(0b100);
}
else
{
AppendRegister(index);
}
// base
if (@base == null)
{
Append3Bits(0b101);
}
else
{
AppendRegister(@base);
}
return(this);
}
private int FindIndex(PhysicalRegister register, bool source)
{
for (int i = 0; i < Moves.Count; i++)
{
var move = Moves[i];
var operand = source ? move.Source : move.Destination;
if (!operand.IsCPURegister)
{
continue;
}
if (operand.Register == register)
{
return(i);
}
}
return(-1);
}
public override string ToString()
{
var sb = new StringBuilder();
switch (NodeType)
{
case NodeType.Instruction: sb.Append(Instruction.Name); break;
case NodeType.FixedIntegerConstant: sb.Append(ConstantInteger.ToString()); break;
case NodeType.FixedDoubleConstant: sb.Append(ConstantDouble.ToString()); break;
case NodeType.PhyiscalRegister: sb.Append(PhysicalRegister.ToString()); break;
case NodeType.VirtualRegister:
case NodeType.OperandVariable: sb.Append(Alias); break;
case NodeType.ConstantVariable: sb.Append("(Const "); sb.Append(Alias); sb.Append(")"); break;
case NodeType.TypeVariable: sb.Append('<'); sb.Append(Alias); sb.Append('>'); break;
case NodeType.Expression: sb.Append("["); sb.Append(ExpressionNode.ToString()); sb.Append("]"); break;
case NodeType.Any: sb.Append("_"); break;
default: break;
}
if (ParentNodes.Count != 0)
{
foreach (var node in ParentNodes)
{
sb.Append(" ");
sb.Append(node.ToString());
}
}
return(sb.ToString());
}
public OpcodeEncoder AppendRM(PhysicalRegister register)
{
return(Append3Bits(register.RegisterCode));
}
public VirtualRegister(PhysicalRegister physicalRegister, bool reserved)
{
PhysicalRegister = physicalRegister;
IsReserved = reserved;
IsSpilled = false;
}
public LiveIntervalTrack(PhysicalRegister register, bool reserved)
{
Register = register;
IsReserved = reserved;
}
public Node(PhysicalRegister physicalRegister)
{
NodeType = NodeType.PhyiscalRegister;
PhysicalRegister = physicalRegister;
}