2 files changed, 5 insertions, 15 deletions
diff --git a/js/src/vm/Interpreter-inl.h b/js/src/vm/Interpreter-inl.h
index 5f476c4ff..710f1d89b 100644
--- a/js/src/vm/Interpreter-inl.h
+++ b/js/src/vm/Interpreter-inl.h
@@ -22,7 +22,6 @@
 #include "vm/EnvironmentObject-inl.h"
 #include "vm/Stack-inl.h"
 #include "vm/String-inl.h"
-#include "vm/UnboxedObject-inl.h"
 
 namespace js {
 
@@ -337,14 +336,10 @@ InitGlobalLexicalOperation(JSContext* cx, LexicalEnvironmentObject* lexicalEnvAr
 inline bool
 InitPropertyOperation(JSContext* cx, JSOp op, HandleObject obj, HandleId id, HandleValue rhs)
 {
-    if (obj->is<PlainObject>() || obj->is<JSFunction>()) {
-        unsigned propAttrs = GetInitDataPropAttrs(op);
-        return NativeDefineProperty(cx, obj.as<NativeObject>(), id, rhs, nullptr, nullptr,
-                                    propAttrs);
-    }
-
-    MOZ_ASSERT(obj->as<UnboxedPlainObject>().layout().lookup(id));
-    return PutProperty(cx, obj, id, rhs, false);
+  MOZ_ASSERT(obj->is<PlainObject>() || obj->is<JSFunction>());
+  unsigned propAttrs = GetInitDataPropAttrs(op);
+  return NativeDefineProperty(cx, obj.as<NativeObject>(), id, rhs,
+                              nullptr, nullptr, propAttrs);
 }
 
 inline bool
diff --git a/js/src/vm/Interpreter.cpp b/js/src/vm/Interpreter.cpp
index e6d6630c4..3cf2deb83 100644
--- a/js/src/vm/Interpreter.cpp
+++ b/js/src/vm/Interpreter.cpp
@@ -4111,7 +4111,7 @@ CASE(JSOP_INITHOMEOBJECT)
     /* Load the home object */
     ReservedRooted<JSObject*> obj(&rootObject0);
     obj = &REGS.sp[int(-2 - skipOver)].toObject();
-    MOZ_ASSERT(obj->is<PlainObject>() || obj->is<UnboxedPlainObject>() || obj->is<JSFunction>());
+    MOZ_ASSERT(obj->is<PlainObject>() || obj->is<JSFunction>());
 
     func->setExtendedSlot(FunctionExtended::METHOD_HOMEOBJECT_SLOT, ObjectValue(*obj));
 }
@@ -4927,15 +4927,10 @@ js::NewObjectOperation(JSContext* cx, HandleScript script, jsbytecode* pc,
             return nullptr;
         if (group->maybePreliminaryObjects()) {
             group->maybePreliminaryObjects()->maybeAnalyze(cx, group);
-            if (group->maybeUnboxedLayout())
-                group->maybeUnboxedLayout()->setAllocationSite(script, pc);
         }
 
         if (group->shouldPreTenure() || group->maybePreliminaryObjects())
             newKind = TenuredObject;
-
-        if (group->maybeUnboxedLayout())
-            return UnboxedPlainObject::create(cx, group, newKind);
     }
 
     RootedObject obj(cx);