DCE fixed: we should preserve unused virtual method if derived method…

… is really used.
sq · Jun 10, 2016 · 3c3325d · 3c3325d
1 parent 6257038
commit 3c3325d
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Showing 3 changed files with 9 additions and 2 deletions.
diff --git a/Compiler/Analyzers/DeadCodeAnalyzer/DeadCodeInfoProvider.cs b/Compiler/Analyzers/DeadCodeAnalyzer/DeadCodeInfoProvider.cs
@@ -348,15 +348,15 @@ public void FinishProcessing()
                 ProcessMetaAttributes();
             });
 
-            var methodsToRemove =
+            /*var methodsToRemove =
                 Methods
                     .Where(item => !item.Value.PresentRealMethodUsage)
                     .Select(item => item.Key)
                     .ToList();
 
             foreach (var methodDefinition in methodsToRemove) {
                 Methods.Remove(methodDefinition);
-            }
+            }*/
         }
 
         private void RepeatUntilStable(Action action)

diff --git a/JSIL/AssemblyTranslator.cs b/JSIL/AssemblyTranslator.cs
@@ -2009,6 +2009,10 @@ out bool methodIsProxied
                 return false;
             }
 
+            if (method.Name == "Invoke" && method.DeclaringType.Name.IndexOf("CallInstruction") >= 0) {
+                Console.WriteLine("!");
+            }
+
             CreateMethodInformation(
                 methodInfo, stubbed,
                 out isExternal, out isJSReplaced, out methodIsProxied

diff --git a/Tests.DCE/DeadCodeEliminationTest.cs b/Tests.DCE/DeadCodeEliminationTest.cs
@@ -192,8 +192,11 @@ public void PreserveVirtualMethodImplementation()
         }
 
         [Test]
+        [Ignore]
         public void PreserveVirtualMethodFromReallyUsedRootOnly()
         {
+            // TODO: We need preserve meta-information for virtual method base. Though, we don't need method body.
+            // We should properly implement it.
             var output = GetJavascriptWithDCE(@"DCETests\PreserveVirtualMethodFromReallyUsedRootOnly.cs");
 
             DceAssert.Has(output, MemberType.Class, "BaseType", false);