[turbofan] Skip data-flow analysis of code entry field.

test/mjsunit/regress/regress-crbug-613494.js

Index: test/mjsunit/regress/regress-crbug-613494.js
diff --git a/test/mjsunit/regress/regress-crbug-577112.js b/test/mjsunit/regress/regress-crbug-613494.js
similarity index 64%
copy from test/mjsunit/regress/regress-crbug-577112.js
copy to test/mjsunit/regress/regress-crbug-613494.js
index 504f921a335801a51fd1c0c1a39a8b08e8872722..6fcc1e94f4052416b1f672ff9d4e818f15f35459 100644
--- a/test/mjsunit/regress/regress-crbug-577112.js
+++ b/test/mjsunit/regress/regress-crbug-613494.js
@@ -2,12 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax
+// Flags: --allow-natives-syntax --turbo-escape --noanalyze-environment-liveness
 
-Array.prototype.__proto__ = null;
-var prototype = Array.prototype;
 function f() {
-  prototype.lastIndexOf({});
+  var bound = 0;
+  function g() { return bound }
 }
 f();
 f();