Fast-codegen: Implementing try/finally on top of nesting context.

test/mjsunit/try.js

 // Copyright 2008 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
@@ skipping 329 matching lines @@
   broke = false;
 } catch (o) {
   caught = true;
 } finally {
   finalized = true;
 }
 assertTrue(broke);
 assertFalse(caught);
 assertTrue(finalized);
 
+function return_from_nested_finally_in_finally() {
+  try {
+    return 1;
+  } finally {
+    try {
+      return 2;
+    } finally {
+      return 42;
+    }
+  }
+}
+
+assertEquals(42, return_from_nested_finally_in_finally());
+
+function break_from_nested_finally_in_finally() {
+  L: try {
+    return 1;
+  } finally {
+    try {
+      return 2;
+    } finally {
+      break L;
+    }
+  }
+  return 42;
+}
+
+assertEquals(42, break_from_nested_finally_in_finally());
+
+function continue_from_nested_finally_in_finally() {
+  do {
+    try {
+      return 1;
+    } finally {
+      try {
+        return 2;
+      } finally {
+        continue;
+      }
+    }
+  } while (false);
+  return 42;
+}
+
+assertEquals(42, continue_from_nested_finally_in_finally());