v8/test/mjsunit/fast-element-smi-check.js

// Copyright 2011 the V8 project authors. All rights reserved.
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// 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
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//       with the distribution.
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//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
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// Flags: --allow-natives-syntax

var a = new Array(10);

function test_load_set_smi(a) {
  return a[0] = a[0] = 1;
}

test_load_set_smi(a);
test_load_set_smi(a);
test_load_set_smi(123);

function test_load_set_smi_2(a) {
  return a[0] = a[0] = 1;
};
%PrepareFunctionForOptimization(test_load_set_smi_2);
test_load_set_smi_2(a);
%OptimizeFunctionOnNextCall(test_load_set_smi_2);
test_load_set_smi_2(a);
test_load_set_smi_2(0);
%DeoptimizeFunction(test_load_set_smi_2);
%ClearFunctionFeedback(test_load_set_smi_2);

var b = new Object();

function test_load_set_smi_3(b) {
  return b[0] = b[0] = 1;
}

test_load_set_smi_3(b);
test_load_set_smi_3(b);
test_load_set_smi_3(123);

function test_load_set_smi_4(b) {
  return b[0] = b[0] = 1;
};
%PrepareFunctionForOptimization(test_load_set_smi_4);
test_load_set_smi_4(b);
%OptimizeFunctionOnNextCall(test_load_set_smi_4);
test_load_set_smi_4(b);
test_load_set_smi_4(0);
%DeoptimizeFunction(test_load_set_smi_4);
%ClearFunctionFeedback(test_load_set_smi_4);