VM: Precompile method extractors for implicit and explicit closurization.

runtime/vm/precompiler.cc

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/precompiler.h"
 
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/isolate.h"
 #include "vm/log.h"
@@ skipping 573 matching lines @@
           }
           selector3 = Symbols::LookupFromConcat(Symbols::ClosurizePrefix(),
                                                 selector2);
           if (IsSent(selector3)) {
             // Hash-closurization.
             // Function is get:foo and somewhere get:#foo is called.
             AddFunction(function);
 
             function2 = function.ImplicitClosureFunction();
             AddFunction(function2);
+
+            // Add corresponding method extractor get:#foo.
+            function2 = function.GetMethodExtractor(selector3);
+            AddFunction(function2);
           }
         } else if (Field::IsSetterName(selector)) {
           selector2 = Symbols::LookupFromConcat(Symbols::ClosurizePrefix(),
                                                 selector);
           if (IsSent(selector2)) {
             // Hash-closurization.
             // Function is set:foo and somewhere get:#set:foo is called.
             AddFunction(function);
 
             function2 = function.ImplicitClosureFunction();
             AddFunction(function2);
+
+            // Add corresponding method extractor get:#set:foo.
+            function2 = function.GetMethodExtractor(selector2);
+            AddFunction(function2);
           }
         } else if (function.kind() == RawFunction::kRegularFunction) {
           selector2 = Field::LookupGetterSymbol(selector);
           if (IsSent(selector2)) {
             // Closurization.
             // Function is foo and somewhere get:foo is called.
             function2 = function.ImplicitClosureFunction();
             AddFunction(function2);
+
+            // Add corresponding method extractor.
+            function2 = function.GetMethodExtractor(selector2);
+            AddFunction(function2);
           }
           selector2 = Symbols::LookupFromConcat(Symbols::ClosurizePrefix(),
                                                 selector);
           if (IsSent(selector2)) {
             // Hash-closurization.
             // Function is foo and somewhere get:#foo is called.
             function2 = function.ImplicitClosureFunction();
             AddFunction(function2);
+
+            // Add corresponding method extractor get:#foo
+            function2 = function.GetMethodExtractor(selector2);
+            AddFunction(function2);
           }
         }
       }
     }
   }
 }
 
 
 void Precompiler::DropUncompiledFunctions() {
   Library& lib = Library::Handle(Z);
@@ skipping 187 matching lines @@
         for (intptr_t j = 0; j < closures.Length(); j++) {
           function ^= closures.At(j);
           visitor->VisitFunction(function);
         }
       }
     }
   }
 }
 
 }  // namespace dart