Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var t = true;
    function check( value ){ return value; };
    
    
    
  };
</script>

Test runner

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var x = t;
if( t ) x = t;
if( !t ) x = !t;
x = check( t );
 

var x = true;
if( true ) x = true;
if( !true ) x = !true;
x = check( true );
 

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