/// <summary>
/// Save the state in the low register back to the original register when a save is needed.
/// The save code is inserted directly before the given target instruction.
/// </summary>
public void SaveToOriginalAndClear(Instruction target, BasicBlock block, MethodBody body, RegisterSpillingMap map)
{
if (wideStart != null)
{
wideStart.SaveToOriginalAndClear(target, block, body, map);
}
else
{
if (SaveToOriginalNeeded)
{
var original = OriginalRegister;
// Fix target to insert before
if (target.OpCode.IsMoveResult())
{
do
{
target = target.GetPrevious(body.Instructions);
} while (target.OpCode == OpCodes.Nop);
}
// Insert save code
var move = CreateMove(LowRegister, original, type);
block.InsertBefore(target, move);
// Save end in mapping
Mapping.LastInstruction = move;
// Record mapping
map.Add(Mapping);
}
Clear();
}
}
/// <summary>
/// Save the state in the low register back to the original register when a save is needed.
/// The save code is inserted directly before the given target instruction.
/// </summary>
public void SaveToOriginalAndClear(Instruction target, BasicBlock block, MethodBody body, RegisterSpillingMap map)
{
if (wideStart != null)
{
wideStart.SaveToOriginalAndClear(target, block, body, map);
}
else
{
if (SaveToOriginalNeeded)
{
var original = OriginalRegister;
// Fix target to insert before
if (target.OpCode.IsMoveResult())
{
do
{
target = target.GetPrevious(body.Instructions);
} while (target.OpCode == OpCodes.Nop);
}
// Insert save code
var move = CreateMove(LowRegister, original, type);
block.InsertBefore(target, move);
// Save end in mapping
Mapping.LastInstruction = move;
// Record mapping
map.Add(Mapping);
}
Clear();
}
}
