Use HType::NonPrimitive() for non primitive HConstants.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 889ebfd05fc6f47a4cb835269ab29ddbd686f02e..73404b94ba561ae47b528cfd3930fe49ffc5e3d1 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -361,6 +361,10 @@ HType HType::TypeFromValue(Handle<Object> value) {
     result = HType::JSObject();
   } else if (value->IsJSArray()) {
     result = HType::JSArray();
+  } else if (value->IsHeapObject()) {
+    // TODO(bmeurer): This is currently a work-around until the new type system
+    // is in place, where we have more precise types.
+    result = HType::NonPrimitive();
   }
   return result;
 }