[tests] Make assertOptimized()/assertUnoptimized() great again.

test/mjsunit/regress/regress-crbug-594183.js

Index: test/mjsunit/regress/regress-crbug-594183.js
diff --git a/test/mjsunit/regress/regress-crbug-594183.js b/test/mjsunit/regress/regress-crbug-594183.js
index 677b94aec37e811b49c45d8bbd62d613520a600e..87f319591779e2127e3c425d9820d8fc8817bad1 100644
--- a/test/mjsunit/regress/regress-crbug-594183.js
+++ b/test/mjsunit/regress/regress-crbug-594183.js
@@ -79,4 +79,8 @@ assertOptimized(inferrable_store);
 // seeing a property name key. It should have inferred a receiver map and
 // emitted an elements store, however.
 inferrable_store("deopt");
-assertUnoptimized(inferrable_store);
+
+// TurboFan is not sophisticated enough to use key type provided by ICs.
+if (!isTurboFanned(inferrable_store)) {
+  assertUnoptimized(inferrable_store);
+}