No globals.

dart/frog/leg/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 94 matching lines @@
   Element getEqualsInterceptor() {
     return compiler.findHelper(const SourceString('eq'));
   }
 
   Element getMapMaker() {
     return compiler.findHelper(const SourceString('makeLiteralMap'));
   }
 }
 
 class SsaBuilderTask extends CompilerTask {
+  final Interceptors interceptors;
+  final Map<Node, ClosureData> closureDataCache;
+
+  String get name() => 'SSA builder';
+
   SsaBuilderTask(Compiler compiler)
-    : super(compiler), interceptors = new Interceptors(compiler);
-  String get name() => 'SSA builder';
-  Interceptors interceptors;
+    : interceptors = new Interceptors(compiler),
+      closureDataCache = new HashMap<Node, ClosureData>(),
+      super(compiler);
 
   HGraph build(WorkItem work) {
     return measure(() {
       FunctionElement element = work.element;
       HInstruction.idCounter = 0;
       SsaBuilder builder = new SsaBuilder(compiler, work);
       HGraph graph;
       switch (element.kind) {
         case ElementKind.GENERATIVE_CONSTRUCTOR:
           graph = compileConstructor(builder, work);
@@ skipping 1118 matching lines @@
                                            HLoopBranch.DO_WHILE_LOOP));
 
     conditionBlock.addSuccessor(loopEntryBlock);  // The back-edge.
     loopEntryBlock.postProcessLoopHeader();
 
     endLoop(loopEntryBlock, conditionBlock, jumpHandler, localsHandler);
     jumpHandler.close();
   }
 
   visitFunctionExpression(FunctionExpression node) {
-    ClosureData nestedClosureData = closureDataCache[node];
+    ClosureData nestedClosureData = compiler.builder.closureDataCache[node];
     if (nestedClosureData === null) {
       // TODO(floitsch): we can only assume that the reason for not having a
       // closure data here is, because the function is inside an initializer.
       compiler.unimplemented("Closures inside initializers", node: node);
     }
     assert(nestedClosureData !== null);
     assert(nestedClosureData.closureClassElement !== null);
     ClassElement closureClassElement =
         nestedClosureData.closureClassElement;
     FunctionElement callElement = nestedClosureData.callElement;
@@ skipping 1613 matching lines @@
                                         false,
                                         <HInstruction>[target, input]));
     return builder.pop();
   }
 
   HInstruction result() {
     flushLiterals();
     return prefix;
   }
 }