[tests] Make assertOptimized()/assertUnoptimized() great again.

test/mjsunit/regress/regress-v8-5697.js

 // 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.
 
 // Flags: --allow-natives-syntax
 
 function load(o) { return o.x; }
 
 for (var x = 0; x < 1000; ++x) {
   load({x});
   load({x});
+  % OptimizeFunctionOnNextCall(load);

[Igor Sheludko, 2017/01/25 11:38:42]

Optimization of load() did not kick in with --ignition-staging.

[Michael Starzinger, 2017/01/26 12:24:52]

Is the loop still needed on this case?

[Igor Sheludko, 2017/01/26 14:12:30]

Yes. The test checks that we don't have a deopt loop here.

   try { load(); } catch (e) { }
 }
 
 assertOptimized(load);
 
 
 function store(o) { o.x = -1; }
 
 for (var x = 0; x < 1000; ++x) {
   store({x});
   store({x});
+  % OptimizeFunctionOnNextCall(store);

[Michael Starzinger, 2017/01/26 12:24:52]

Likewise.

   try { store(); } catch (e) { }
 }
 
 assertOptimized(store);