[turbofan] Try to update deprecated maps first.

test/mjsunit/regress/regress-crbug-724608.js

Index: test/mjsunit/regress/regress-crbug-724608.js
diff --git a/test/mjsunit/regress/regress-crbug-724608.js b/test/mjsunit/regress/regress-crbug-724608.js
new file mode 100644
index 0000000000000000000000000000000000000000..cd91211f072500d544fc3222f567051d1517e61f
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-724608.js
@@ -0,0 +1,13 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+function foo(x) {
+  return {['p']: 0, x};
+}
+foo();
+var a = {['p']: ''};
+%OptimizeFunctionOnNextCall(foo);
+foo();