root/ext/opcache/Optimizer/pass10.c

/* [<][>][^][v][top][bottom][index][help] */
if (((ZEND_OPTIMIZER_PASS_10|ZEND_OPTIMIZER_PASS_5) & OPTIMIZATION_LEVEL) == ZEND_OPTIMIZER_PASS_10) {
        nop_removal(op_array);
}

/* [<][>][^][v][top][bottom][index][help] */