Fix regular and ElementsKind transitions interfering with each other

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/ia32/stub-cache-ia32.cc
index 2e13ad4285defefa324c9accefd1cb36939a717a..f2867de0b41cbf33bb497227deb1fd2ebe235102 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -746,8 +746,10 @@ void StubCompiler::GenerateStoreField(MacroAssembler* masm,
                                       Register scratch,
                                       Label* miss_label) {
   // Check that the map of the object hasn't changed.
+  CompareMapMode mode = transition.is_null() ? ALLOW_ELEMENT_TRANSITION_MAPS
+                                             : REQUIRE_EXACT_MAP;
   __ CheckMap(receiver_reg, Handle<Map>(object->map()),
-              miss_label, DO_SMI_CHECK, ALLOW_ELEMENT_TRANSITION_MAPS);
+              miss_label, DO_SMI_CHECK, mode);
 
   // Perform global security token check if needed.
   if (object->IsJSGlobalProxy()) {