public void Optimize_RightOptimized2()
{
var tacContainer = new ThreeAddressCode();
Utils.AddAssignmentNode(tacContainer, null, "t1", "4", "*", "i");
Utils.AddAssignmentNode(tacContainer, null, "a1", "t1");
Utils.AddAssignmentNode(tacContainer, null, "t2", "b");
Utils.AddAssignmentNode(tacContainer, null, "i", "1");
Utils.AddIfGotoNode(tacContainer, null, "L1", "t2");
Utils.AddGotoNode(tacContainer, null, "L2");
Utils.AddAssignmentNode(tacContainer, "L1", "t3", "4", "*", "i");
Utils.AddAssignmentNode(tacContainer, "L2", "a3", "t3");
Utils.AddAssignmentNode(tacContainer, null, "t4", "4", "*", "i");
Utils.AddAssignmentNode(tacContainer, null, "a2", "t4");
var expectedResult = new ThreeAddressCode();
Utils.AddAssignmentNode(expectedResult, null, "t3", "4", "*", "i");
Utils.AddAssignmentNode(expectedResult, null, "t1", "t3");
Utils.AddAssignmentNode(expectedResult, null, "a1", "t1");
Utils.AddAssignmentNode(expectedResult, null, "t2", "b");
Utils.AddAssignmentNode(expectedResult, null, "i", "1");
Utils.AddIfGotoNode(expectedResult, null, "L1", "t2");
Utils.AddGotoNode(expectedResult, null, "L2");
Utils.AddAssignmentNode(expectedResult, "L1", "t3", "4", "*", "i");
Utils.AddAssignmentNode(expectedResult, "L2", "a3", "t3");
Utils.AddAssignmentNode(expectedResult, null, "t3", "4", "*", "i");
Utils.AddAssignmentNode(expectedResult, null, "t4", "t3");
Utils.AddAssignmentNode(expectedResult, null, "a2", "t4");
var cfg = new ControlFlowGraph(tacContainer);
var expectedResultcfg = new ControlFlowGraph(expectedResult);
E_GenKillVisitor availExprVisitor = new E_GenKillVisitor();
var availExprContainers = availExprVisitor.GenerateAvailableExpressionForBlocks(cfg.SourceBasicBlocks);
var availableExpressionsITA = new AvailableExpressionsITA(cfg, availExprContainers);
var availableExprOptimization = new AvailableExprOptimization();
bool isOptimized = availableExprOptimization.Optimize(availableExpressionsITA);
var basicBlockItems = cfg.SourceBasicBlocks.BasicBlockItems;
var codeText = cfg.SourceBasicBlocks.BasicBlockItems
.Select(bl => bl.ToString()).Aggregate((b1, b2) => b1 + b2);
Assert.IsTrue(isOptimized);
Assert.AreEqual(cfg.ToString(), expectedResultcfg.ToString());
}
public static void Main()
{
var DirectoryPath = Directory.GetParent(Directory.GetCurrentDirectory()).Parent.FullName;
string FileName = Path.Combine(DirectoryPath, "a.txt");
try
{
string Text = File.ReadAllText(FileName);
Text = Text.Replace('\t', ' ');
Scanner scanner = new Scanner();
scanner.SetSource(Text, 0);
Parser parser = new Parser(scanner);
var b = parser.Parse();
var r = parser.root;
// Console.WriteLine(r);
Console.WriteLine("Исходный текст программы");
var printv = new PrettyPrintVisitor(true);
r.Visit(printv);
Console.WriteLine(printv.Text);
Console.WriteLine("-------------------------------");
if (!b)
{
Console.WriteLine("Ошибка");
}
else
{
Console.WriteLine("Синтаксическое дерево построено");
// TODO: add loop through all tree optimizations
var avis = new AssignCountVisitor();
parser.root.Visit(avis);
Console.WriteLine("Количество присваиваний = {0}", avis.Count);
Console.WriteLine("-------------------------------");
// var operv = new OperatorCountVisitor();
// parser.root.Visit(operv);
// Console.WriteLine(operv.Result);
//
// var maxcv = new MaxOpExprVisitor();
// parser.root.Visit(maxcv);
// Console.WriteLine(maxcv.Result);
//
// var inncycv = new IsInnerCycleVisitor();
// parser.root.Visit(inncycv);
// Console.WriteLine(inncycv.Result);
//
// var innifv = new IsInnerIfCycleVisitor();
// parser.root.Visit(innifv);
// Console.WriteLine(innifv.Result);
//
// var maxdeepv = new MaxDeepCycleVistor();
// parser.root.Visit(maxdeepv);
// Console.WriteLine(maxdeepv.Result);
//
// var parentv = new FillParentVisitor();
// parser.root.Visit(parentv);
//
// var sameminusv = new SameMinusOptVisitor();
// parser.root.Visit(sameminusv);
//
// var zeroMulVisitor = new ZeroMulOptVisitor();
// parser.root.Visit(zeroMulVisitor);
//
// var compareFalseVisitor = new CompareToItselfFalseOptVisitor();
// parser.root.Visit(compareFalseVisitor);
var operv = new OperatorCountVisitor();
parser.root.Visit(operv);
Console.WriteLine(operv.Result);
var maxcv = new MaxOpExprVisitor();
parser.root.Visit(maxcv);
Console.WriteLine(maxcv.Result);
var inncycv = new IsInnerCycleVisitor();
parser.root.Visit(inncycv);
Console.WriteLine(inncycv.Result);
var innifv = new IsInnerIfCycleVisitor();
parser.root.Visit(innifv);
Console.WriteLine(innifv.Result);
var maxdeepv = new MaxDeepCycleVistor();
parser.root.Visit(maxdeepv);
Console.WriteLine(maxdeepv.Result);
var parentv = new FillParentVisitor();
parser.root.Visit(parentv);
var sameminusv = new SameMinusOptVisitor();
parser.root.Visit(sameminusv);
var whilefalsev = new WhileFalseOptVisitor();
parser.root.Visit(whilefalsev);
var zeroMulVisitor = new ZeroMulOptVisitor();
parser.root.Visit(zeroMulVisitor);
var compareFalseVisitor = new CompareToItselfFalseOptVisitor();
parser.root.Visit(compareFalseVisitor);
Console.WriteLine("-------------------------------");
//
// var ifNodeWithBoolExpr = new IfNodeWithBoolExprVisitor();
// parser.root.Visit(ifNodeWithBoolExpr);
//var plusZeroExpr = new PlusZeroExprVisitor();
//parser.root.Visit(plusZeroExpr);
var alwaysElse = new AlwaysElseVisitor();
parser.root.Visit(alwaysElse);
//var checkTruth = new CheckTruthVisitor();
//parser.root.Visit(checkTruth);
//Console.WriteLine("Оптимизированная программа");
//printv = new PrettyPrintVisitor(true);
//r.Visit(printv);
//Console.WriteLine(printv.Text);
//Console.WriteLine("-------------------------------");
Console.WriteLine("Оптимизированная программа");
printv = new PrettyPrintVisitor(true);
r.Visit(printv);
Console.WriteLine(printv.Text);
Console.WriteLine("-------------------------------");
var threeAddressCodeVisitor = new ThreeAddressCodeVisitor();
r.Visit(threeAddressCodeVisitor);
threeAddressCodeVisitor.Postprocess();
Console.WriteLine("========== TAC ==============");
Console.WriteLine(threeAddressCodeVisitor);
var cfg = new ControlFlowGraph(threeAddressCodeVisitor.TACodeContainer);
// Console.WriteLine(cfg);
// cfg.SaveToFile(@"cfg.txt");
// var dstClassifier = new DstEdgeClassifier(cfg);
// dstClassifier.ClassificateEdges(cfg);
// Console.WriteLine(dstClassifier);
Console.WriteLine(cfg);
cfg.SaveToFile(@"cfg.txt");
var dstClassifier = new DstEdgeClassifier(cfg);
dstClassifier.ClassificateEdges(cfg);
Console.WriteLine(dstClassifier);
var depth = cfg.GetDepth(dstClassifier.EdgeTypes);
Console.WriteLine($"Depth CFG = {depth}");
/* -----------------------CFG TASKS START---------------------------------*/
Console.WriteLine("\nCFG TASKS START");
Console.WriteLine(cfg);
var edgeClassifierService = new EdgeClassifierService(cfg);
Console.WriteLine("EdgeClassifierService: \n" + edgeClassifierService);
bool isReducibility = DSTReducibility.IsReducibility(cfg);
Console.WriteLine("IsReducibility: " + isReducibility);
var naturalCycles = new CFGNaturalCycles(cfg);
Console.WriteLine("\nNaturalCycles: \n" + naturalCycles);
//Console.WriteLine("\nNestedCycles: \n" + naturalCycles.NestedLoopsText());
Console.WriteLine("\nCFG TASKS END");
/* -----------------------CFG TASKS END---------------------------------*/
//Console.WriteLine(threeAddressCodeVisitor.TACodeContainer);
//var availExprOpt = new AvailableExprOptimization();
//availExprOpt.Optimize(cfg);
//Console.WriteLine("======= After algebraic identity =======");
//Console.WriteLine(cfg);
// Console.WriteLine("======= DV =======");
// Console.WriteLine(threeAddressCodeVisitor);
// var detector = new DefUseDetector();
// detector.DetectAndFillDefUse(threeAddressCodeVisitor.TACodeContainer);
Console.WriteLine();
Console.WriteLine("Before optimization");
Console.WriteLine(threeAddressCodeVisitor.TACodeContainer);
/*Console.WriteLine("======= DV =======");
* Console.WriteLine(threeAddressCodeVisitor);
* var detector = new DefUseDetector();
* detector.DetectAndFillDefUse(threeAddressCodeVisitor.TACodeContainer);
*
* //Console.WriteLine("======= Detector 1 =======");
* //Console.WriteLine(detector);
* //Console.WriteLine("======= Detector 2 =======");
* //Console.WriteLine(detector.ToString2());
*
* // var constPropagationOptimizer = new DefUseConstPropagation(detector);
* // var result = constPropagationOptimizer.Optimize(threeAddressCodeVisitor.TACodeContainer);
* //
* // Console.WriteLine("======= After const propagation =======");
* // Console.WriteLine(threeAddressCodeVisitor);
* //
* // result = constPropagationOptimizer.Optimize(threeAddressCodeVisitor.TACodeContainer);
* // Console.WriteLine("======= After const propagation =======");
* // Console.WriteLine(threeAddressCodeVisitor);
* //
* // var copyPropagationOptimizer = new DefUseCopyPropagation(detector);
* // result = copyPropagationOptimizer.Optimize(threeAddressCodeVisitor.TACodeContainer);
* //
* // Console.WriteLine("======= After copy propagation =======");
* // Console.WriteLine(threeAddressCodeVisitor);
* =======
* var constPropagationOptimizer = new DefUseConstPropagation(detector);
* var result = constPropagationOptimizer.Optimize(threeAddressCodeVisitor.TACodeContainer);
*
* Console.WriteLine("======= After const propagation =======");
* Console.WriteLine(threeAddressCodeVisitor);
*
* result = constPropagationOptimizer.Optimize(threeAddressCodeVisitor.TACodeContainer);
* Console.WriteLine("======= After const propagation =======");
* Console.WriteLine(threeAddressCodeVisitor);
*
* var copyPropagationOptimizer = new DefUseCopyPropagation(detector);
* result = copyPropagationOptimizer.Optimize(threeAddressCodeVisitor.TACodeContainer);
*
* Console.WriteLine("======= After copy propagation =======");
* Console.WriteLine(threeAddressCodeVisitor);
*/
//var bblocks = new BasicBlocks();
//bblocks.SplitTACode(threeAddressCodeVisitor.TACodeContainer);
//Console.WriteLine("Разбиение на базовые блоки завершилось");
var emptyopt = new EmptyNodeOptimization();
emptyopt.Optimize(threeAddressCodeVisitor.TACodeContainer);
Console.WriteLine("Empty node optimization");
Console.WriteLine(threeAddressCodeVisitor.TACodeContainer);
// var gotoOpt = new GotoOptimization();
// gotoOpt.Optimize(threeAddressCodeVisitor.TACodeContainer);
// Console.WriteLine("Goto optimization");
// Console.WriteLine(threeAddressCodeVisitor.TACodeContainer);
//var elimintaion = new EliminateTranToTranOpt();
//elimintaion.Optimize(threeAddressCodeVisitor.TACodeContainer);
//Console.WriteLine("Удаление переходов к переходам завершилось");
// var unreachableCode = new UnreachableCodeOpt();
// var res = unreachableCode.Optimize(threeAddressCodeVisitor.TACodeContainer);
// Console.WriteLine("Оптимизация для недостижимых блоков");
var algOpt = new AlgebraicIdentityOptimization();
algOpt.Optimize(threeAddressCodeVisitor.TACodeContainer);
Console.WriteLine("algebraic identity optimization");
Console.WriteLine(threeAddressCodeVisitor.TACodeContainer);
var bblocks = new BasicBlocks();
bblocks.SplitTACode(threeAddressCodeVisitor.TACodeContainer);
Console.WriteLine("Разбиение на базовые блоки завершилось");
Console.WriteLine();
GenKillVisitor genKillVisitor = new GenKillVisitor();
var genKillContainers = genKillVisitor.GenerateReachingDefinitionForBlocks(cfg.SourceBasicBlocks);
//start
var commonTf = new TFByCommonWay(genKillContainers);
var composTf = new TFByComposition(genKillContainers);
Console.WriteLine("=== Compos ===");
Console.WriteLine(composTf.Calculate(new HashSet <TacNode>(), cfg.SourceBasicBlocks.BasicBlockItems.First()));
Console.WriteLine("=== Common ===");
Console.WriteLine(commonTf.Calculate(new HashSet <TacNode>(), cfg.SourceBasicBlocks.BasicBlockItems.First()));
//end
// InOutContainerWithFilling inOutContainers =
// new InOutContainerWithFilling(cfg.SourceBasicBlocks, genKillContainers);
// Console.WriteLine("=== InOut для базовых блоков ===");
// Console.WriteLine(inOutContainers.ToString());
var defUseContainers = DefUseForBlocksGenerator.Execute(cfg.SourceBasicBlocks);
DefUseForBlocksPrinter.Execute(defUseContainers);
var reachingDefenitionsITA = new ReachingDefinitionsITA(cfg, genKillContainers);
Console.WriteLine("=== InOut после итерационного алгоритма для достигающих определения ===");
Console.WriteLine(reachingDefenitionsITA.InOut);
Console.WriteLine("=======================================================================");
var reachingDefConstPropagation = new ReachingDefinitionsConstPropagation();
Console.WriteLine(threeAddressCodeVisitor);
reachingDefConstPropagation.Optimize(reachingDefenitionsITA);
reachingDefConstPropagation.Optimize(reachingDefenitionsITA);
foreach (var bblock in bblocks)
{
Console.Write(bblock);
}
Console.WriteLine("============ Dominators ============");
var dominators = new DominatorsFinder(cfg);
for (var i = 0; i < dominators.Dominators.Count; ++i)
{
Console.WriteLine(i + ": ");
foreach (var tacNode in dominators.Dominators.ElementAt(i).Value)
{
Console.WriteLine(tacNode);
}
}
Console.WriteLine("============ Immediate Dominators ============");
for (var i = 0; i < dominators.ImmediateDominators.Count; ++i)
{
Console.WriteLine(i + ": ");
if (dominators.ImmediateDominators.ElementAt(i).Value == null)
{
Console.WriteLine("null");
}
else
{
foreach (var tacNode in dominators.ImmediateDominators.ElementAt(i).Value)
{
Console.WriteLine(tacNode);
}
}
Console.WriteLine();
}
// var activeVariablesITA = new ActiveVariablesITA(cfg, defUseContainers);
// Console.WriteLine("=== InOut после итерационного алгоритма для активных переменных ===");
// Console.WriteLine(activeVariablesITA.InOut);
var activeVariablesITA = new ActiveVariablesITA(cfg, defUseContainers);
Console.WriteLine("=== InOut после итерационного алгоритма для активных переменных ===");
Console.WriteLine(activeVariablesITA.InOut);
/* -----------------------AvailableExpressions START---------------------------------*/
Console.WriteLine("AvailableExpressions Optimization");
Console.WriteLine("Before AvailableExprOptimization");
Console.WriteLine(cfg.SourceBasicBlocks
.BasicBlockItems.Select((bl, ind) => $"BLOCK{ind}:\n" + bl.ToString()).Aggregate((b1, b2) => b1 + b2));
E_GenKillVisitor availExprVisitor = new E_GenKillVisitor();
var availExprContainers = availExprVisitor.GenerateAvailableExpressionForBlocks(cfg.SourceBasicBlocks);
var availableExpressionsITA = new AvailableExpressionsITA(cfg, availExprContainers);
Console.WriteLine("=== InOut после итерационного алгоритма для доступных выражений ===");
Console.WriteLine(availableExpressionsITA.InOut);
var inData = availableExpressionsITA.InOut.In;
var availableExprOptimization = new AvailableExprOptimization();
bool isUsed = availableExprOptimization.Optimize(availableExpressionsITA);
Console.WriteLine("AvailableExprOptimization isUsed: " + isUsed);
isUsed = availableExprOptimization.Optimize(availableExpressionsITA);
Console.WriteLine("AvailableExprOptimization isUsed: " + isUsed);
Console.WriteLine(cfg.SourceBasicBlocks
.BasicBlockItems.Select((bl, ind) => $"BLOCK{ind}:\n" + bl.ToString()).Aggregate((b1, b2) => b1 + b2));
/* -----------------------AvailableExpressions END---------------------------------*/
/* -----------------------ConstDistribOptimization START---------------------------------*/
Console.WriteLine("ConstDistributionOptimization: Before");
Console.WriteLine(cfg.SourceBasicBlocks
.BasicBlockItems.Select((bl, ind) => $"BLOCK{ind}:\n" + bl.ToString()).Aggregate((b1, b2) => b1 + b2));
var constDistITA = new ConstDistributionITA(cfg);
var constDistOpt = new ConstDistributionOptimization();
var isConstDistApplied = constDistOpt.Optimize(constDistITA);
Console.WriteLine("ConstDistributionOptimization isUsed: " + isConstDistApplied);
Console.WriteLine(cfg.SourceBasicBlocks
.BasicBlockItems.Select((bl, ind) => $"BLOCK{ind}:\n" + bl.ToString()).Aggregate((b1, b2) => b1 + b2));
/* -----------------------ConstDistrib END---------------------------------*/
}
}
catch (FileNotFoundException)
{
Console.WriteLine("Файл {0} не найден", FileName);
}
catch (Exception e)
{
Console.WriteLine("{0}", e);
}
Console.ReadLine();
}
public void Constructor_IfElse()
{
/*
* Code:
* a = 1;
* if(b)
* {
* a = 4;
* } else
* {
* c = 5;
* }
* a = c;
* c = 1;
*
* Tac:
* a = 1
* t1 = b
* if t1 goto L1
* c = 5
* goto L2
* L1: a = 4
* L2: a = с
* c = 1
*/
var tacContainer = new ThreeAddressCode();
//1
Utils.AddAssignmentNode(tacContainer, null, "a", "1");
Utils.AddAssignmentNode(tacContainer, null, "t1", "b");
Utils.AddIfGotoNode(tacContainer, null, "L1", "t1");
//2
Utils.AddAssignmentNode(tacContainer, null, "c", "5");
Utils.AddGotoNode(tacContainer, null, "L2");
//3
Utils.AddAssignmentNode(tacContainer, "L1", "a", "4");
//4
Utils.AddAssignmentNode(tacContainer, "L2", "a", "c");
Utils.AddAssignmentNode(tacContainer, null, "c", "1");
var cfg = new ControlFlowGraph(tacContainer);
E_GenKillVisitor availExprVisitor = new E_GenKillVisitor();
var availExprContainers = availExprVisitor.GenerateAvailableExpressionForBlocks(cfg.SourceBasicBlocks);
var ita = new AvailableExpressionsITA(cfg, availExprContainers);
var inData = ita.InOut.In;
var outData = ita.InOut.Out;
var expectedIn0 = new TacAssignmentNode();
var expectedIn1 = new TacAssignmentNode();
expectedIn1.LeftPartIdentifier = "t1";
expectedIn1.FirstOperand = "b";
var expectedOut0 = new TacAssignmentNode();
expectedOut0.LeftPartIdentifier = "t1";
expectedOut0.FirstOperand = "b";
Assert.AreEqual(expectedIn1.ToString(), inData[cfg[1]].First().ToString());
Assert.AreEqual(expectedIn1.ToString(), inData[cfg[2]].First().ToString());
Assert.AreEqual(expectedIn1.ToString(), inData[cfg[3]].First().ToString());
Assert.AreEqual(expectedOut0.ToString(), outData[cfg[1]].First().ToString());
Assert.AreEqual(expectedOut0.ToString(), outData[cfg[2]].First().ToString());
Assert.AreEqual(expectedOut0.ToString(), outData[cfg[3]].First().ToString());
}