[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 c87e32545828e470dd851801f53a8e6d7b44f65f..7b85f0186e26826e0002f14331e9b058f987a92e 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);
+}