Rewrite decodeURL as builtin function, remove now unused runtime functions.

test/mjsunit/regress-612109.js

Index: test/mjsunit/regress-612109.js
diff --git a/test/mjsunit/regress-612109.js b/test/mjsunit/regress-612109.js
new file mode 100644
index 0000000000000000000000000000000000000000..a03079a8a7a78344759543566e4242f639e9602d
--- /dev/null
+++ b/test/mjsunit/regress-612109.js
@@ -0,0 +1,8 @@
+// Copyright 2016 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.
+
+
+__v_2 = "string for triggering osr in __f_0";
+for (var __v_5 = 0; __v_5 < 16; __v_5++) __v_2 = __v_2 + __v_2;
+decodeURI(encodeURI(__v_2));

[Yang, 2016/05/23 06:44:32]

Can we rename this file to regress-crbug-612109? And maybe fix the variable
names.

[Franzi, 2016/05/23 08:55:57]

Done.