cpsir: fix co19 test - use process* instead of visit* (we unadvertly removed code that recursed int…

pkg/compiler/lib/src/cps_ir/insert_refinements.dart

 // 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.
 
 library cps_ir.optimization.insert_refinements;
 
 import 'dart:math' show min;
 import 'optimizers.dart' show Pass;
 import 'cps_ir_nodes.dart';
 import '../elements/elements.dart';
@@ skipping 110 matching lines @@
 
       // Skip arguments that provide no refinement.
       if (argSuccessType == types.dynamicType) continue;
 
       applyRefinement(node.parent,
           new Refinement(node.dartArgument(i), argSuccessType));
     }
   }
 
   void visitInvokeStatic(InvokeStatic node) {
+    node.arguments.forEach(processReference);
     _refineArguments(node,
         _getSuccessTypesForStaticMethod(types, node.target));
   }
 
   void visitInvokeMethod(InvokeMethod node) {
     // Update references to their current refined values.
     processReference(node.receiver);
     node.arguments.forEach(processReference);
 
     // If the call is intercepted, we want to refine the actual receiver,
@@ skipping 284 matching lines @@
       case 'exp':
       case 'log':
         return [types.numType];
       case 'pow':
         return [types.numType, types.numType];
     }
   }
 
   return null;
 }