Added %NeverOptimize runtime call that can disable optimizations for a method for tests.

test/mjsunit/regress/regress-97116b.js

 // 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
@@ skipping 13 matching lines @@
 // 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.
 
 // Flags: --expose-gc --allow-natives-syntax
 
 // Check that we are not flushing code for inlined functions that
 // have a pending lazy deoptimization on the stack.
 
 function deopt() {
-  try { } catch (e) { }  // Avoid inlining.
+  %NeverOptimize();
   %DeoptimizeFunction(outer);
   for (var i = 0; i < 10; i++) gc();  // Force code flushing.
 }
 
 function outer(should_deopt) {
   inner(should_deopt);
 }
 
 function inner(should_deopt) {
   if (should_deopt) deopt();
 }
 
 outer(false);
 outer(false);
 %OptimizeFunctionOnNextCall(outer);
 outer(true);