/// <summary>
/// This does a shallow copy of all of the members of the
/// abstract IRInstruction class to the specified instruction.
/// </summary>
/// <param name="i">The instruction to copy to.</param>
/// <param name="newMethod">The method this instruction will be added to.</param>
/// <returns><see cref="i"/></returns>
protected IRInstruction CopyTo(IRInstruction i, IRMethod newMethod)
{
i.ILOffset = this.ILOffset;
i.IRIndex = this.IRIndex;
i.Opcode = this.Opcode;
i.ParentMethod = newMethod;
if (Destination != null)
{
i.Destination = this.Destination.Clone(i);
}
foreach (IRLinearizedLocation t in this.Sources)
{
i.Sources.Add(t.Clone(i));
}
return i;
}
private void LinearizePath(MethodDefData pMethodDefData, IRInstruction pStartInstruction, Stack<IRStackObject> pStack, Queue<Tuple<IRInstruction, Stack<IRStackObject>>> pBranches)
{
int stackReturn = pStack.Count;
IRInstruction currentInstruction = pStartInstruction;
MethodDefData.MethodDefBodyData.MethodDefBodyExceptionData exceptionData = null;
while (currentInstruction != null)
{
if (currentInstruction.Linearized && pStack.Count == stackReturn) break;
if ((exceptionData = Array.Find(pMethodDefData.Body.Exceptions, e => e.Flags == 0 && e.HandlerOffset == currentInstruction.ILOffset)) != null)
{
IRType exceptionType = Assembly.AppDomain.PresolveType(Assembly.File.ExpandMetadataToken(exceptionData.ClassTokenOrFilterOffset));
IRStackObject exceptionObj = new IRStackObject();
exceptionObj.Type = exceptionType;
exceptionObj.LinearizedTarget = new IRLinearizedLocation(currentInstruction, IRLinearizedLocationType.Local);
exceptionObj.LinearizedTarget.Local.LocalIndex = currentInstruction.AddLinearizedLocal(pStack, exceptionType);
pStack.Push(exceptionObj);
}
if (currentInstruction.Linearized)
{
currentInstruction.Destination = null;
currentInstruction.Sources.Clear();
}
currentInstruction.Linearize(pStack);
currentInstruction.Linearized = true;
switch (currentInstruction.Opcode)
{
case IROpcode.Branch:
{
IRBranchInstruction branchInstruction = (IRBranchInstruction)currentInstruction;
if (branchInstruction.BranchCondition == IRBranchCondition.Always) currentInstruction = branchInstruction.TargetIRInstruction;
else
{
pBranches.Enqueue(new Tuple<IRInstruction, Stack<IRStackObject>>(branchInstruction.TargetIRInstruction, pStack.Duplicate()));
currentInstruction = Instructions[currentInstruction.IRIndex + 1];
}
break;
}
case IROpcode.Switch:
{
IRSwitchInstruction switchInstruction = (IRSwitchInstruction)currentInstruction;
foreach (IRInstruction targetInstruction in switchInstruction.TargetIRInstructions)
{
pBranches.Enqueue(new Tuple<IRInstruction, Stack<IRStackObject>>(targetInstruction, pStack.Duplicate()));
}
currentInstruction = Instructions[currentInstruction.IRIndex + 1];
break;
}
case IROpcode.Leave:
{
IRLeaveInstruction leaveInstruction = (IRLeaveInstruction)currentInstruction;
currentInstruction = leaveInstruction.TargetIRInstruction;
break;
}
case IROpcode.Jump:
case IROpcode.Throw:
case IROpcode.Return: currentInstruction = null; break;
default: currentInstruction = currentInstruction.IRIndex >= Instructions.Count ? null : Instructions[currentInstruction.IRIndex + 1]; break;
}
}
}
public void InsertInstruction(int pIRIndex, IRInstruction pInstruction)
{
pInstruction.ILOffset = Instructions[pIRIndex].ILOffset;
pInstruction.ParentMethod = this;
Instructions.Insert(pInstruction, pIRIndex);
}
public void AddInstruction(uint pILOffset, IRInstruction pInstruction)
{
pInstruction.ILOffset = (int)pILOffset;
pInstruction.ParentMethod = this;
Instructions.Add(pInstruction);
}
public void SetParentInstruction(IRInstruction newParent)
{
ParentInstruction = newParent;
switch (Type)
{
case IRLinearizedLocationType.Field:
Field.FieldLocation.SetParentInstruction(newParent);
break;
case IRLinearizedLocationType.FieldAddress:
FieldAddress.FieldLocation.SetParentInstruction(newParent);
break;
case IRLinearizedLocationType.Indirect:
Indirect.AddressLocation.SetParentInstruction(newParent);
break;
case IRLinearizedLocationType.ArrayElement:
ArrayElement.ArrayLocation.SetParentInstruction(newParent);
ArrayElement.IndexLocation.SetParentInstruction(newParent);
break;
case IRLinearizedLocationType.ArrayElementAddress:
ArrayElementAddress.ArrayLocation.SetParentInstruction(newParent);
ArrayElementAddress.IndexLocation.SetParentInstruction(newParent);
break;
case IRLinearizedLocationType.ArrayLength:
ArrayLength.ArrayLocation.SetParentInstruction(newParent);
break;
case IRLinearizedLocationType.FunctionAddress:
if (FunctionAddress.InstanceLocation != null)
FunctionAddress.InstanceLocation.SetParentInstruction(newParent);
break;
case IRLinearizedLocationType.Phi:
Phi.SourceLocations.ForEach(l => l.SetParentInstruction(newParent));
break;
default: break;
}
}
public IRLinearizedLocation Clone(IRInstruction pNewInstruction) { return new IRLinearizedLocation(pNewInstruction, this); }
public IRLinearizedLocation(IRInstruction pParentInstruction, IRLinearizedLocation pLinearizedTarget)
{
mTempID = sTempID++;
ParentInstruction = pParentInstruction;
Type = pLinearizedTarget.Type;
switch (Type)
{
case IRLinearizedLocationType.Null: break;
case IRLinearizedLocationType.Local: Local = pLinearizedTarget.Local; break;
case IRLinearizedLocationType.LocalAddress: LocalAddress = pLinearizedTarget.LocalAddress; break;
case IRLinearizedLocationType.Parameter: Parameter = pLinearizedTarget.Parameter; break;
case IRLinearizedLocationType.ParameterAddress: ParameterAddress = pLinearizedTarget.ParameterAddress; break;
case IRLinearizedLocationType.ConstantI4: ConstantI4 = pLinearizedTarget.ConstantI4; break;
case IRLinearizedLocationType.ConstantI8: ConstantI8 = pLinearizedTarget.ConstantI8; break;
case IRLinearizedLocationType.ConstantR4: ConstantR4 = pLinearizedTarget.ConstantR4; break;
case IRLinearizedLocationType.ConstantR8: ConstantR8 = pLinearizedTarget.ConstantR8; break;
case IRLinearizedLocationType.Field:
Field = pLinearizedTarget.Field;
Field.FieldLocation = pLinearizedTarget.Field.FieldLocation.Clone(pParentInstruction);
break;
case IRLinearizedLocationType.FieldAddress:
FieldAddress = pLinearizedTarget.FieldAddress;
FieldAddress.FieldLocation = pLinearizedTarget.FieldAddress.FieldLocation.Clone(pParentInstruction);
break;
case IRLinearizedLocationType.StaticField: StaticField = pLinearizedTarget.StaticField; break;
case IRLinearizedLocationType.StaticFieldAddress: StaticFieldAddress = pLinearizedTarget.StaticFieldAddress; break;
case IRLinearizedLocationType.Indirect:
Indirect = pLinearizedTarget.Indirect;
Indirect.AddressLocation = pLinearizedTarget.Indirect.AddressLocation.Clone(pParentInstruction);
break;
case IRLinearizedLocationType.SizeOf: SizeOf = pLinearizedTarget.SizeOf; break;
case IRLinearizedLocationType.ArrayElement:
ArrayElement = pLinearizedTarget.ArrayElement;
ArrayElement.ArrayLocation = pLinearizedTarget.ArrayElement.ArrayLocation.Clone(pParentInstruction);
ArrayElement.IndexLocation = pLinearizedTarget.ArrayElement.IndexLocation.Clone(pParentInstruction);
break;
case IRLinearizedLocationType.ArrayElementAddress:
ArrayElementAddress = pLinearizedTarget.ArrayElementAddress;
ArrayElementAddress.ArrayLocation = pLinearizedTarget.ArrayElementAddress.ArrayLocation.Clone(pParentInstruction);
ArrayElementAddress.IndexLocation = pLinearizedTarget.ArrayElementAddress.IndexLocation.Clone(pParentInstruction);
break;
case IRLinearizedLocationType.ArrayLength:
ArrayLength = pLinearizedTarget.ArrayLength;
ArrayLength.ArrayLocation = pLinearizedTarget.ArrayLength.ArrayLocation.Clone(pParentInstruction);
break;
case IRLinearizedLocationType.FunctionAddress:
FunctionAddress = pLinearizedTarget.FunctionAddress;
if (FunctionAddress.InstanceLocation != null) FunctionAddress.InstanceLocation = pLinearizedTarget.FunctionAddress.InstanceLocation.Clone(pParentInstruction);
break;
case IRLinearizedLocationType.RuntimeHandle: RuntimeHandle = pLinearizedTarget.RuntimeHandle; break;
case IRLinearizedLocationType.String: String = pLinearizedTarget.String; break;
case IRLinearizedLocationType.Phi:
Phi = pLinearizedTarget.Phi;
Phi.SourceLocations = new List<IRLinearizedLocation>(pLinearizedTarget.Phi.SourceLocations.Count);
pLinearizedTarget.Phi.SourceLocations.ForEach(l => Phi.SourceLocations.Add(l.Clone(pParentInstruction)));
break;
default: throw new ArgumentException("Type");
}
}
public IRLinearizedLocation(IRInstruction pParentInstruction, IRLinearizedLocationType pType)
{
mTempID = sTempID++;
ParentInstruction = pParentInstruction;
Type = pType;
}
public IRControlFlowGraphNode FindInstructionNode(IRInstruction pInstruction)
{
foreach (IRControlFlowGraphNode node in Nodes)
{
foreach (IRInstruction instruction in node.Instructions)
{
if (pInstruction == instruction) return node;
}
}
throw new NullReferenceException();
}
public IRLocalReductionData(IRInstruction pLifeEnds, IRLocal pLocal) { LifeEnds = pLifeEnds; Local = pLocal; }
