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      1 // Copyright 2015 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Flags: --allow-natives-syntax
      6 
      7 function foo(a, b) {
      8   var passed = a == 3;
      9   if (passed) {
     10     if (passed) {
     11       passed = b == 4;
     12     }
     13   }
     14   %DeoptimizeFunction(foo);
     15   return passed;
     16 }
     17 
     18 assertTrue(foo(3, 4));
     19 assertTrue(foo(3, 4));
     20 assertFalse(foo(3.1, 4));
     21 assertFalse(foo(3, 4.1));
     22 
     23 %OptimizeFunctionOnNextCall(foo);
     24 
     25 assertTrue(foo(3, 4));
     26 assertTrue(foo(3, 4));
     27 assertFalse(foo(3.1, 4));
     28 assertFalse(foo(3, 4.1));
     29