src/v8/test/debugger/debug/regress/regress-debug-code-recompilation.js

// Copyright 2012 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
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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Debug = debug.Debug
Debug.setListener(function(){});

function f() {a=1;b=2};
function g() {
  a=1;
  b=2;
}

%PrepareFunctionForOptimization(Debug.setBreakPoint);
bp = Debug.setBreakPoint(f, 0, 0);
Debug.clearBreakPoint(bp);
%OptimizeFunctionOnNextCall(Debug.setBreakPoint);
bp = Debug.setBreakPoint(f, 0, 0);
Debug.clearBreakPoint(bp);
bp = Debug.setBreakPoint(f, 0, 0);
Debug.clearBreakPoint(bp);
%PrepareFunctionForOptimization(Debug.setBreakPoint);
%OptimizeFunctionOnNextCall(Debug.setBreakPoint);
bp = Debug.setBreakPoint(f, 0, 0);
Debug.clearBreakPoint(bp);

Debug.setListener(null);