350884: KeyedStoreIC miss didn't handle a transitioning case.

test/mjsunit/regress/regress-350884.js

Index: test/mjsunit/regress/regress-350884.js
diff --git a/test/mjsunit/regress/regress-347906.js b/test/mjsunit/regress/regress-350884.js
similarity index 51%
copy from test/mjsunit/regress/regress-347906.js
copy to test/mjsunit/regress/regress-350884.js
index c751618928c93015679087ee1b500637657aa341..86568534ee705e0adfb945912dde5e1487b192a7 100644
--- a/test/mjsunit/regress/regress-347906.js
+++ b/test/mjsunit/regress/regress-350884.js
@@ -2,13 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --harmony
-
-function foo() {
-  return Math.clz32(12.34);
+var obj = new Array(1);
+obj[0] = 0;
+obj[1] = 0;
+function foo(flag_index) {
+  obj[flag_index]++;
 }
 
-foo();
-foo();
-%OptimizeFunctionOnNextCall(foo);
-foo();
+// Force dictionary properties on obj.
+obj[-8] = 3;
+foo(1);
+foo(2);