Fix an issue with optimization of functions inside catch.

test/mjsunit/regress/regress-1521.js

Index: test/mjsunit/regress/regress-1521.js
diff --git a/test/mjsunit/regress/regress-1521.js b/test/mjsunit/regress/regress-1521.js
new file mode 100644
index 0000000000000000000000000000000000000000..415db6780324621d59ff4efdb30da66706aa596d
--- /dev/null
+++ b/test/mjsunit/regress/regress-1521.js
@@ -0,0 +1,47 @@
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Optimized variable access inside through a catch context should work.
+function test(x) {
+  try {
+    throw new Error();
+  } catch (e) {
+    var y = {f: 1};
+    var f = function () {
+      var z = y;
+      var g = function () {
+        if (y.f === z.f) return x;
+      };
+      %OptimizeFunctionOnNextCall(g);
+      return g;
+    }
+    assertEquals(3, f()());
+  }
+}
+
+test(3);
+