/// <summary>
/// Inserts an instruction before the current instruction.
/// </summary>
/// <returns></returns>
public Context InsertBefore()
{
int label = Label;
int beforeIndex = -1;
if (IsFirstInstruction)
{
Debug.Assert(BasicBlock != null, @"Cannot insert before first instruction without basic block");
Debug.Assert(BasicBlock.Index == index, @"Cannot be first instruction since basic block does not start here");
beforeIndex = instructionSet.InsertBefore(index);
BasicBlock.Index = beforeIndex;
}
else
beforeIndex = instructionSet.InsertBefore(index);
Context ctx = new Context(instructionSet, beforeIndex);
ctx.Clear();
ctx.Label = label;
return ctx;
}
/// <summary>
/// Inserts an instruction before the current instruction.
/// </summary>
/// <returns></returns>
public Context InsertBefore()
{
Debug.Assert(!IsBlockStartInstruction);
int label = Label;
int beforeIndex = instructionSet.InsertBefore(index);
Context ctx = new Context(instructionSet, beforeIndex);
ctx.Clear();
ctx.Label = label; // assign label to this new node
return ctx;
}
