e="l00122"></a><span class="lineno">  122</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">int</span> k = k_;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;            __builtin_prefetch(block_ptr.first, 0, 1);</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lin