Introduce typed selectors to do better tree shaking based on calls on 'this'. Getters and setters w…

lib/compiler/implementation/ssa/builder.dart

 // Copyright (c) 2012, 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.
 
 class Interceptors {
   Compiler compiler;
   Interceptors(Compiler this.compiler);
 
   SourceString mapOperatorToMethodName(Operator op) {
     String name = op.source.stringValue;
@@ skipping 1835 matching lines @@
     HInstruction compileArgument(Node argument) {
       visit(argument);
       return pop();
     }
 
     HInstruction compileConstant(Element constantElement) {
       Constant constant = compiler.compileVariable(constantElement);
       return graph.addConstant(constant);
     }
 
-    FunctionParameters parameters = element.computeParameters(compiler);
-    return selector.addArgumentsToList(arguments, list, parameters,
-                                       compileArgument, compileConstant);
+    return selector.addArgumentsToList(arguments,
+                                       list,
+                                       element,
+                                       compileArgument,
+                                       compileConstant,
+                                       compiler);
   }
 
   void addGenericSendArgumentsToList(Link<Node> link, List<HInstruction> list) {
     for (; !link.isEmpty(); link = link.tail) {
       visit(link.head);
       list.add(pop());
     }
   }
 
   visitDynamicSend(Send node) {
@@ skipping 1251 matching lines @@
                                         false,
                                         <HInstruction>[target, input]));
     return builder.pop();
   }
 
   HInstruction result() {
     flushLiterals();
     return prefix;
   }
 }