Fix test/build failures (win64 compile warning, isolate test parallel...

Fix test/build failures (win64 compile warning, isolate test parallel compilation failure, gcmole issue, isolate test intermittant failure)

BUG=

Review URL: https://codereview.chromium.org/14265024

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14449 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/bootstrapper.cc

@@ -890,15 +890,15 @@ bool Genesis::InitializeGlobal(Handle<GlobalObject> inner_global,
     // overwritten by JS code.
     native_context()->set_array_function(*array_function);
 
-    // Cache the array maps
-    MaybeObject* cache_result = CacheInitialJSArrayMaps(*native_context(),
-                                                        *initial_map);
-    if (cache_result->IsFailure()) return false;
-
     if (FLAG_optimize_constructed_arrays) {
+      // Cache the array maps, needed by ArrayConstructorStub
+      MaybeObject* cache_result = CacheInitialJSArrayMaps(*native_context(),
+                                                          *initial_map);
+      if (cache_result->IsFailure()) return false;
+
       ArrayConstructorStub array_constructor_stub(isolate);
-      array_function->shared()->set_construct_stub(
-          *array_constructor_stub.GetCode(isolate));
+      Handle<Code> code = array_constructor_stub.GetCode(isolate);
+      array_function->shared()->set_construct_stub(*code);
     } else {
       array_function->shared()->set_construct_stub(
           isolate->builtins()->builtin(Builtins::kCommonArrayConstructCode));

src/heap.cc

@@ -163,7 +163,8 @@ Heap::Heap()
 #endif
       promotion_queue_(this),
       configured_(false),
-      chunks_queued_for_free_(NULL) {
+      chunks_queued_for_free_(NULL),
+      relocation_mutex_(NULL) {
   // Allow build-time customization of the max semispace size. Building
   // V8 with snapshots and a non-default max semispace size is much
   // easier if you can define it as part of the build environment.

src/hydrogen.cc

@@ -1860,7 +1860,7 @@ HValue* HGraphBuilder::JSArrayBuilder::EmitMapCode(HValue* context) {
       HGlobalObject(context));
   HInstruction* native_context = AddInstruction(new(zone())
       HLoadNamedField(global_object, true, GlobalObject::kNativeContextOffset));
-  size_t offset = Context::kHeaderSize +
+  int offset = Context::kHeaderSize +
       kPointerSize * Context::JS_ARRAY_MAPS_INDEX;
   HInstruction* map_array = AddInstruction(new(zone())
       HLoadNamedField(native_context, true, offset));