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

dart/sdk/lib/_internal/compiler/implementation/js_emitter/type_test_emitter.dart

Index: dart/sdk/lib/_internal/compiler/implementation/js_emitter/type_test_emitter.dart
diff --git a/dart/sdk/lib/_internal/compiler/implementation/js_emitter/type_test_emitter.dart b/dart/sdk/lib/_internal/compiler/implementation/js_emitter/type_test_emitter.dart
index 5644edba756093572b1f14daff97913227b01679..408fc67ee520c983be724b943ab134d39edba24a 100644
--- a/dart/sdk/lib/_internal/compiler/implementation/js_emitter/type_test_emitter.dart
+++ b/dart/sdk/lib/_internal/compiler/implementation/js_emitter/type_test_emitter.dart
@@ -255,33 +255,19 @@ class TypeTestEmitter extends CodeEmitterHelper {
       Map<FunctionType, bool> functionTypeChecks,
       FunctionTypeSignatureEmitter emitFunctionTypeSignature,
       FunctionTypeTestEmitter emitIsFunctionTypeTest) {
-    bool hasDynamicFunctionTypeCheck = false;
-    int neededPredicates = 0;
     functionTypeChecks.forEach((FunctionType functionType, bool knownSubtype) {
       if (!knownSubtype) {
         registerDynamicFunctionTypeCheck(functionType);
-        hasDynamicFunctionTypeCheck = true;
-      } else if (!backend.rti.isSimpleFunctionType(functionType)) {
-        // Simple function types are always checked using predicates and should
-        // not provoke generation of signatures.
-        neededPredicates++;
       }
     });
-    bool alwaysUseSignature = false;
-    if (hasDynamicFunctionTypeCheck ||
-        neededPredicates > MAX_FUNCTION_TYPE_PREDICATES) {
-      emitFunctionTypeSignature(method, methodType);
-      alwaysUseSignature = true;
-    }
+    emitFunctionTypeSignature(method, methodType);
     functionTypeChecks.forEach((FunctionType functionType, bool knownSubtype) {
       if (knownSubtype) {
         if (backend.rti.isSimpleFunctionType(functionType)) {
           // Simple function types are always checked using predicates.
           emitIsFunctionTypeTest(functionType);
-        } else if (alwaysUseSignature) {
-          registerDynamicFunctionTypeCheck(functionType);
         } else {
-          emitIsFunctionTypeTest(functionType);
+          registerDynamicFunctionTypeCheck(functionType);
         }
       }
     });