Make static tear-off closures a class, like instance tear-off closures.

sdk/lib/_internal/compiler/implementation/ssa/optimize.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.
 
 part of ssa;
 
 abstract class OptimizationPhase {
   String get name;
   void visitGraph(HGraph graph);
 }
@@ skipping 609 matching lines @@
     return compiler.world.locateSingleField(
         receiverType.refine(selector, compiler));
   }
 
   HInstruction visitFieldGet(HFieldGet node) {
     if (node.element == backend.jsIndexableLength) {
       if (node.receiver is HInvokeStatic) {
         // Try to recognize the length getter with input
         // [:new List(int):].
         HInvokeStatic call = node.receiver;
-        Element element = call.target.element;
+        Element element = call.element;
         // TODO(ngeoffray): checking if the second input is an integer
         // should not be necessary but it currently makes it easier for
         // other optimizations to reason about a fixed length constructor
         // that we know takes an int.
         if (element == compiler.unnamedListConstructor
-            && call.inputs.length == 2
-            && call.inputs[1].isInteger()) {
-          return call.inputs[1];
+            && call.inputs.length == 1
+            && call.inputs[0].isInteger()) {
+          return call.inputs[0];
         }
       } else if (node.receiver.isConstantList() ||
                  node.receiver.isConstantString()) {
         var instruction = node.receiver;
         return graph.addConstantInt(
             instruction.constant.length, backend.constantSystem);
       }
     }
     return node;
   }
@@ skipping 1057 matching lines @@
     HBasicBlock block = user.block;
     block.addAfter(user, interceptor);
     block.rewrite(user, interceptor);
     block.remove(user);
 
     // The interceptor will be removed in the dead code elimination
     // phase. Note that removing it here would not work because of how
     // the [visitBasicBlock] is implemented.
   }
 }