Fix bug 4648: invalidate type parameter optimization on a method if a call with a selector that has…

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 2358 matching lines @@
     inputs.add(target);
     if (element.kind == ElementKind.FUNCTION) {
       bool succeeded = addStaticSendArgumentsToList(selector, node.arguments,
                                                     element, inputs);
       if (!succeeded) {
         // TODO(ngeoffray): Match the VM behavior and throw an
         // exception at runtime.
         compiler.cancel('Unimplemented non-matching static call', node: node);
       }
       HInvokeStatic instruction = new HInvokeStatic(inputs);
+      // TODO(ngeoffray): Only do this if knowing the return type is
+      // useful.
       HType returnType =
           builder.backend.optimisticReturnTypesWithRecompilationOnTypeChange(
               work.element, element);
       if (returnType != null) instruction.guaranteedType = returnType;
       pushWithPosition(instruction, node);
     } else {
       if (element.kind == ElementKind.GETTER) {
         target = new HInvokeStatic(inputs);
         add(target);
         inputs = <HInstruction>[target];
@@ skipping 1257 matching lines @@
           new HSubGraphBlockInformation(elseBranch.graph));
 
     HBasicBlock conditionStartBlock = conditionBranch.block;
     conditionStartBlock.setBlockFlow(info, joinBlock);
     SubGraph conditionGraph = conditionBranch.graph;
     HIf branch = conditionGraph.end.last;
     assert(branch is HIf);
     branch.blockInformation = conditionStartBlock.blockFlow;
   }
 }