Repro for OOM bug in test.dart (applies to r29345).

dart/sdk/lib/_internal/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.
 
 part of ssa;
 
 /**
  * A special element for the extra parameter taken by intercepted
  * methods. We need to override [Element.computeType] because our
  * optimizers may look at its declared type.
@@ skipping 1867 matching lines @@
       HInstruction representations = buildTypeArgumentRepresentations(type);
       add(representations);
       return new HTypeConversion.withTypeRepresentation(type, kind, subtype,
           original, representations);
     } else if (type.kind == TypeKind.TYPE_VARIABLE) {
       HType subtype = original.instructionType;
       HInstruction typeVariable = addTypeVariableReference(type);
       return new HTypeConversion.withTypeRepresentation(type, kind, subtype,
           original, typeVariable);
     } else if (type.kind == TypeKind.FUNCTION) {
+      // HERE
+      String name = kind == HTypeConversion.CAST_TYPE_CHECK
+          ? '_asCheck' : '_assertCheck';
+
+      List arguments = [buildFunctionType(type), original];
+      pushInvokeDynamic(
+          null,
+          new Selector.call(name, compiler.jsHelperLibrary, 1),
+          arguments);
+
+      return new HTypeConversion(type, kind, original.instructionType, pop());
+/*
+
       if (backend.rti.isSimpleFunctionType(type)) {
         return original.convertType(compiler, type, kind);
       }
       HType subtype = original.instructionType;
       if (type.containsTypeVariables) {
         bool contextIsTypeArguments = false;
         HInstruction context;
         if (!currentElement.enclosingElement.isClosure()
             && currentElement.isInstanceMember()) {
           context = localsHandler.readThis();
         } else {
           ClassElement contextClass = Types.getClassContext(type);
           context = buildTypeVariableList(contextClass);
           add(context);
           contextIsTypeArguments = true;
         }
         return new HTypeConversion.withContext(type, kind, subtype,
             original, context, contextIsTypeArguments: contextIsTypeArguments);
       } else {
         return new HTypeConversion(type, kind, subtype, original);
       }
+*/
     } else {
       return original.convertType(compiler, type, kind);
     }
   }
 
   HInstruction potentiallyCheckType(HInstruction original, DartType type,
       { int kind: HTypeConversion.CHECKED_MODE_CHECK }) {
     if (!compiler.enableTypeAssertions) return original;
     HInstruction other = buildTypeConversion(original, type, kind);
     if (other != original) add(other);
@@ skipping 88 matching lines @@
           value,
           compiler.boolClass.computeType(compiler),
           kind: HTypeConversion.BOOLEAN_CONVERSION_CHECK);
     }
     HInstruction result = new HBoolify(value);
     add(result);
     return result;
   }
 
   HInstruction attachPosition(HInstruction target, Node node) {
-    target.sourcePosition = sourceFileLocationForBeginToken(node);
+    if (node != null) {
+      target.sourcePosition = sourceFileLocationForBeginToken(node);
+    }
     return target;
   }
 
   SourceFileLocation sourceFileLocationForBeginToken(Node node) =>
       sourceFileLocationForToken(node, node.getBeginToken());
 
   SourceFileLocation sourceFileLocationForEndToken(Node node) =>
       sourceFileLocationForToken(node, node.getEndToken());
 
   SourceFileLocation sourceFileLocationForToken(Node node, Token token) {
@@ skipping 881 matching lines @@
   HLiteralList buildTypeVariableList(ClassElement contextClass) {
     List<HInstruction> inputs = <HInstruction>[];
     for (Link<DartType> link = contextClass.typeVariables;
         !link.isEmpty;
         link = link.tail) {
       inputs.add(addTypeVariableReference(link.head));
     }
     return buildLiteralList(inputs);
   }
 
+  HInstruction buildFunctionType(FunctionType type) {
+    List<HInstruction> typeVariables = <HInstruction>[];
+    bool hasDirectTypeVariables =
+        !currentElement.enclosingElement.isClosure() &&
+        currentElement.isInstanceMember();
+
+    type.forEachTypeVariable((TypeVariableType variable) {
+      if (hasDirectTypeVariables) {
+        HInstruction receiver = localsHandler.readThis();
+        push(new HReadTypeVariable(variable, receiver));
+      } else {
+        push(
+            new HReadTypeVariable.noReceiver(
+                variable, addTypeVariableReference(variable)));
+      }
+      typeVariables.add(pop());
+    });
+    push(new HFunctionType(typeVariables, type));
+    return pop();
+  }
+
   HInstruction buildIsNode(Node node, DartType type, HInstruction expression) {
     type = type.unalias(compiler);
     if (type.kind == TypeKind.FUNCTION) {
+      // HERE
+      List arguments = [buildFunctionType(type), expression];
+      pushInvokeDynamic(
+          node, new Selector.call('_isTest', compiler.jsHelperLibrary, 1),
+          arguments);
+
+      return new HIs.compound(type, expression, pop());
+
+/*
       if (backend.rti.isSimpleFunctionType(type)) {
         // TODO(johnniwinther): Avoid interceptor if unneeded.
         return new HIs.raw(type, expression, invokeInterceptor(expression));
       }
       Element checkFunctionSubtype = backend.getCheckFunctionSubtype();
 
       HInstruction signatureName = graph.addConstantString(
           new DartString.literal(backend.namer.getFunctionTypeName(type)),
           node, compiler);
 
@@ skipping 21 matching lines @@
       }
 
       List<HInstruction> inputs = <HInstruction>[expression,
                                                  signatureName,
                                                  contextName,
                                                  context,
                                                  typeArguments];
       pushInvokeStatic(node, checkFunctionSubtype, inputs, HType.BOOLEAN);
       HInstruction call = pop();
       return new HIs.compound(type, expression, call);
+*/
     } else if (type.kind == TypeKind.TYPE_VARIABLE) {
       HInstruction runtimeType = addTypeVariableReference(type);
       Element helper = backend.getCheckSubtypeOfRuntimeType();
       List<HInstruction> inputs = <HInstruction>[expression, runtimeType];
       pushInvokeStatic(null, helper, inputs, HType.BOOLEAN);
       HInstruction call = pop();
       return new HIs.variable(type, expression, call);
     } else if (RuntimeTypes.hasTypeArguments(type)) {
       ClassElement element = type.element;
       Element helper = backend.getCheckSubtype();
@@ skipping 2615 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;
   }
 }