Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / IlGen / TailCallAnalyzer.cs / 1305376 / TailCallAnalyzer.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Xml.Xsl.Qil; namespace System.Xml.Xsl.IlGen { ////// This analyzer walks each function in the graph and annotates Invoke nodes which can /// be compiled using the IL .tailcall instruction. This instruction will discard the /// current stack frame before calling the new function. /// internal static class TailCallAnalyzer { ////// Perform tail-call analysis on the functions in the specified QilExpression. /// public static void Analyze(QilExpression qil) { foreach (QilFunction ndFunc in qil.FunctionList) { // Only analyze functions which are pushed to the writer, since otherwise code // is generated after the call instruction in order to process cached results if (XmlILConstructInfo.Read(ndFunc).ConstructMethod == XmlILConstructMethod.Writer) AnalyzeDefinition(ndFunc.Definition); } } ////// Recursively analyze the definition of a function. /// private static void AnalyzeDefinition(QilNode nd) { Debug.Assert(XmlILConstructInfo.Read(nd).PushToWriterLast, "Only need to analyze expressions which will be compiled in push mode."); switch (nd.NodeType) { case QilNodeType.Invoke: // Invoke node can either be compiled as IteratorThenWriter, or Writer. // Since IteratorThenWriter involves caching the results of the function call // and iterating over them, .tailcall cannot be used if (XmlILConstructInfo.Read(nd).ConstructMethod == XmlILConstructMethod.Writer) OptimizerPatterns.Write(nd).AddPattern(OptimizerPatternName.TailCall); break; case QilNodeType.Loop: { // Recursively analyze Loop return value QilLoop ndLoop = (QilLoop) nd; if (ndLoop.Variable.NodeType == QilNodeType.Let || !ndLoop.Variable.Binding.XmlType.MaybeMany) AnalyzeDefinition(ndLoop.Body); break; } case QilNodeType.Sequence: { // Recursively analyze last expression in Sequence QilList ndSeq = (QilList) nd; if (ndSeq.Count > 0) AnalyzeDefinition(ndSeq[ndSeq.Count - 1]); break; } case QilNodeType.Choice: { // Recursively analyze Choice branches QilChoice ndChoice = (QilChoice) nd; for (int i = 0; i < ndChoice.Branches.Count; i++) AnalyzeDefinition(ndChoice.Branches[i]); break; } case QilNodeType.Conditional: { // Recursively analyze Conditional branches QilTernary ndCond = (QilTernary) nd; AnalyzeDefinition(ndCond.Center); AnalyzeDefinition(ndCond.Right); break; } case QilNodeType.Nop: AnalyzeDefinition(((QilUnary) nd).Child); break; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DesigntimeLicenseContext.cs
- WinEventQueueItem.cs
- Int32RectValueSerializer.cs
- TransformConverter.cs
- NumericUpDownAccelerationCollection.cs
- AsmxEndpointPickerExtension.cs
- HttpListenerPrefixCollection.cs
- DataGridItemEventArgs.cs
- Debugger.cs
- DbDataAdapter.cs
- TrackPointCollection.cs
- ZipIOLocalFileDataDescriptor.cs
- OleDbError.cs
- ForeignKeyConstraint.cs
- TabControlEvent.cs
- CompilerResults.cs
- XmlSignificantWhitespace.cs
- CompatibleComparer.cs
- ColumnCollectionEditor.cs
- DBConcurrencyException.cs
- CodeGenerator.cs
- CustomLineCap.cs
- Point3DCollection.cs
- SimpleBitVector32.cs
- EntityDataSourceWrapper.cs
- CustomErrorsSectionWrapper.cs
- RepeatButtonAutomationPeer.cs
- errorpatternmatcher.cs
- SoapReflectionImporter.cs
- NetworkStream.cs
- SqlCommand.cs
- BinaryFormatterWriter.cs
- IPHostEntry.cs
- XPathScanner.cs
- ResourceContainer.cs
- SafeSerializationManager.cs
- ControlAdapter.cs
- GlyphTypeface.cs
- DoubleLinkList.cs
- CharacterString.cs
- BamlCollectionHolder.cs
- ContractUtils.cs
- XmlKeywords.cs
- WbmpConverter.cs
- StrongNameIdentityPermission.cs
- NameValuePair.cs
- WebServiceHandlerFactory.cs
- Constants.cs
- SoapElementAttribute.cs
- StrokeCollection2.cs
- ConnectionManagementSection.cs
- Int64Converter.cs
- TypographyProperties.cs
- PageParser.cs
- EdgeModeValidation.cs
- AccessibilityHelperForXpWin2k3.cs
- Models.cs
- MultiView.cs
- Logging.cs
- XmlExtensionFunction.cs
- MemberProjectedSlot.cs
- BindingCollectionElement.cs
- SqlNodeAnnotations.cs
- NTAccount.cs
- TransformedBitmap.cs
- IFlowDocumentViewer.cs
- ActivityCodeDomReferenceService.cs
- CollectionConverter.cs
- SapiAttributeParser.cs
- Double.cs
- storepermissionattribute.cs
- PrintPreviewGraphics.cs
- LogicalCallContext.cs
- IUnknownConstantAttribute.cs
- SmiConnection.cs
- ChildChangedEventArgs.cs
- VerticalAlignConverter.cs
- ButtonBase.cs
- MissingMethodException.cs
- QuestionEventArgs.cs
- TypePropertyEditor.cs
- CoTaskMemSafeHandle.cs
- Events.cs
- WorkflowRuntimeServicesBehavior.cs
- ProviderBase.cs
- SizeConverter.cs
- ActivityIdHeader.cs
- WebService.cs
- DataListItem.cs
- MetadataException.cs
- QueryTask.cs
- IDReferencePropertyAttribute.cs
- XPathConvert.cs
- ModelItemExtensions.cs
- WebFaultException.cs
- GradientBrush.cs
- ToolStripItemClickedEventArgs.cs
- GiveFeedbackEventArgs.cs
- WindowsNonControl.cs
- WriteTimeStream.cs