09.js 489 Bytes
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// Copyright 2022 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.
//
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// Flags: --allow-natives-syntax --maglev
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function f(i) {
  var x = 1;
  if (i) {
    if (i) { x = 3 } else {}
  } else { x = 2 }
  return x;
}

%PrepareFunctionForOptimization(f);
assertEquals(3, f(true));
assertEquals(2, f(false));

%OptimizeMaglevOnNextCall(f);
assertEquals(3, f(true));
assertEquals(2, f(false));