private bool PlaceLiveIntervalOnTrack(LiveInterval liveInterval, MoveHint[] hints)
{
if (hints == null)
{
return(false);
}
foreach (var moveHint in hints)
{
LiveIntervalTrack track = null;
var register = (liveInterval.Start == moveHint.Slot) ? moveHint.FromRegister : moveHint.ToRegister;
if (register == null)
{
continue; // no usable hint
}
if (Trace.Active)
{
Trace.Log(" Trying move hint: " + register + " [ " + moveHint + " ]");
}
if (PlaceLiveIntervalOnTrack(liveInterval, LiveIntervalTracks[register.Index]))
{
return(true);
}
}
return(false);
}
private bool PlaceLiveIntervalOnTrack(LiveInterval liveInterval, LiveIntervalTrack track)
{
if (track.IsReserved)
return false;
if (track.IsFloatingPoint != liveInterval.VirtualRegister.IsFloatingPoint)
return false;
if (track.Intersects(liveInterval))
return false;
if (trace.Active) trace.Log(" Assigned live interval to: " + track.ToString());
track.Add(liveInterval);
return true;
}
public void Evict()
{
LiveIntervalTrack.Evict(this);
}
