/// <summary>
/// Visits the specified method.
/// </summary>
/// <param name="methodDefinition">The method to visit.</param>
public override void Visit(MethodDefinition methodDefinition)
{
if (this.visitedMethods.Contains(methodDefinition))
{
return;
}
this.visitedMethods.Add(methodDefinition);
var body = methodDefinition.Body;
if (body == null || body.Instructions.Count == 0)
{
return;
}
var worker = new OptimizationWorker(this, body);
var instruction = body.Instructions[0];
do
{
var instructionBefore = instruction.Previous;
if (this.ApplyOptimizations(instruction, worker))
{
instruction = instructionBefore;
if (instruction == null)
{
instruction = body.Instructions[0];
continue;
}
}
instruction = instruction.Next;
}
while (instruction != null);
}
/// <summary> /// Performs the optimization starting at the specified instruction. /// </summary> /// <param name="instruction">The instruction to target.</param> /// <param name="worker">The worker for optimization actions.</param> public abstract void OptimizeInstruction(Instruction instruction, OptimizationWorker worker);
/// <summary>
/// Applies all optimizations to the specified instruction.
/// </summary>
/// <param name="instruction">The instruction to optimize.</param>
/// <param name="worker">The worker to apply optimizations on.</param>
/// <returns><see langword="true"/> if an optimization has been performed; <see langword="false" /> otherwise.</returns>
private bool ApplyOptimizations(Instruction instruction, OptimizationWorker worker)
{
var optimizationCount = this.optimizations.Length;
for (var i = 0; i < optimizationCount; i++)
{
var optimization = this.optimizations[i];
optimization.OptimizeInstruction(instruction, worker);
if (worker.WasOptimized)
{
worker.WasOptimized = false;
return true;
}
}
return false;
}