text: // Copyright 2013 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:
  //
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  //       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
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  //       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
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  // Flags: --allow-natives-syntax --smi-only-arrays --expose-gc
  // Flags: --track-allocation-sites --noalways-opt
  
  // Test element kind of objects.
  // Since --smi-only-arrays affects builtins, its default setting at compile
  // time sticks if built with snapshot.  If --smi-only-arrays is deactivated
  // by default, only a no-snapshot build actually has smi-only arrays enabled
  // in this test case.  Depending on whether smi-only arrays are actually
  // enabled, this test takes the appropriate code path to check smi-only arrays.
  
  // support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6,7,8));
  support_smi_only_arrays = true;
  
  if (support_smi_only_arrays) {
    print("Tests include smi-only arrays.");
  } else {
    print("Tests do NOT include smi-only arrays.");
  }
  
  if (support_smi_only_arrays) {
  
    function get_literal(x) {
      var literal = [1, 2, x];
      return literal;
    }
  
    get_literal(3);
    get_literal(3);
    %OptimizeFunctionOnNextCall(get_literal);
    a = get_literal(3);
    assertOptimized(get_literal);
    assertTrue(%HasFastSmiElements(a));
    a[0] = 3.5;
  
    // We should have transitioned the boilerplate array to double, and
    // crankshafted code should de-opt on the unexpected elements kind
    b = get_literal(3);
    assertTrue(%HasFastDoubleElements(b));
    assertEquals([1, 2, 3], b);
    assertUnoptimized(get_literal);
  
    // Optimize again
    get_literal(3);
    %OptimizeFunctionOnNextCall(get_literal);
    b = get_literal(3);
    assertTrue(%HasFastDoubleElements(b));
    assertOptimized(get_literal);
  }
  