/// <summary>
/// Starts a code-generation phase.
/// </summary>
/// <param name="context">The target IR context.</param>
/// <returns>The created code-generation phase.</returns>
public CodeGenerationPhase BeginCodeGeneration(IRContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var newPhase = new CodeGenerationPhase(this, context, context.Verifier);
if (Interlocked.CompareExchange(
ref codeGenerationPhase,
newPhase,
null) != null)
{
throw new InvalidOperationException();
}
driverNotifier.Reset();
return(newPhase);
}
/// <summary>
/// Finishes the current code-generation phase.
/// </summary>
/// <param name="phase">The current phase.</param>
internal void FinishCodeGeneration(CodeGenerationPhase phase)
{
Debug.Assert(phase != null, "Invalid phase");
Debug.WriteLineIf(
!phase.HadWorkToDo,
"This code generation phase had nothing to do");
if (phase.HadWorkToDo)
{
driverNotifier.Wait();
}
if (Interlocked.CompareExchange(
ref codeGenerationPhase,
null,
phase) != phase)
{
throw new InvalidOperationException();
}
}
