/// <summary>
/// Mark this low register as in use by the given original register.
/// </summary>
public void SetInUseBy(Register originalRegister, RType type)
{
if (OriginalRegister != null)
{
throw new InvalidOperationException("Register state is still in use");
}
if (type == RType.Wide)
{
if (next == null)
{
throw new InvalidOperationException("Register state cannot hold a wide");
}
if (next.OriginalRegister != null)
{
throw new InvalidOperationException("Register state.next is still in use");
}
}
OriginalRegister = originalRegister;
isWide = (type == RType.Wide);
this.type = type;
if (isWide)
{
next.isWide = false;
next.OriginalRegister = originalRegister;
next.type = RType.Wide2;
next.wideStart = this;
}
Mapping = new RegisterSpillingMapping(OriginalRegister, LowRegister);
}
/// <summary>
/// Mark this low register state as no longer in use.
/// </summary>
private void Clear()
{
if (isWide)
{
next.Clear();
}
OriginalRegister = null;
SaveToOriginalNeeded = false;
isWide = false;
type = RType.Value;
wideStart = null;
Mapping = null;
}
/// <summary>
/// Add an entry
/// </summary>
public void Add(RegisterSpillingMapping mapping)
{
mappings.Add(mapping);
}
/// <summary>
/// Mark this low register as in use by the given original register.
/// </summary>
public void SetInUseBy(Register originalRegister, RType type)
{
if (OriginalRegister != null)
throw new InvalidOperationException("Register state is still in use");
if (type == RType.Wide)
{
if (next == null)
throw new InvalidOperationException("Register state cannot hold a wide");
if (next.OriginalRegister != null)
throw new InvalidOperationException("Register state.next is still in use");
}
OriginalRegister = originalRegister;
isWide = (type == RType.Wide);
this.type = type;
if (isWide)
{
next.isWide = false;
next.OriginalRegister = originalRegister;
next.type = RType.Wide2;
next.wideStart = this;
}
Mapping = new RegisterSpillingMapping(OriginalRegister, LowRegister);
}
/// <summary>
/// Mark this low register state as no longer in use.
/// </summary>
private void Clear()
{
if (isWide) next.Clear();
OriginalRegister = null;
SaveToOriginalNeeded = false;
isWide = false;
type = RType.Value;
wideStart = null;
Mapping = null;
}
/// <summary>
/// Add an entry
/// </summary>
public void Add(RegisterSpillingMapping mapping)
{
mappings.Add(mapping);
}