<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Hi,every one.</div><div><span id="result_box" class="short_text" lang="en"><span class="">I am here again for your help.</span></span></div><div><span id="result_box" class="short_text" lang="en"><span class="">Writing a simple intrinsic in X86 </span></span><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class="">is what I wanted to do from the beginning. For this , I read almost all </span></span></span></span><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class="">posts </span></span>on online forums and emails on llvm-dev. There are different </span></span></span></span></span></span><br><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class="">methods about how to add an intrinsic. But none was </span></span></span></span></span></span></span></span><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class="">effective<em>, </em>even </span></span></span></span></span></span></span></span>I even pasted into my own repo . <span id="result_box" class="short_text" lang="en"><span class=""><br></span></span></div><div><span id="result_box" class="short_text" lang="en"><span class="">Combining various methods, I also carried out my own attempt. The attempt ended with an error "</span></span>error: use of unknown builtin<span id="result_box" class="short_text" lang="en"><span class="">"</span></span> and I can't find how to change.<br><span id="result_box" class="short_text" lang="en"><span class=""></span></span><pre><span id="result_box" class="short_text" lang="en"><span class=""></span></span></pre></div><div><span id="result_box" class="short_text" lang="en"><span class="">I am very disappointed and crazy !!</span></span></div><div><span id="result_box" class="short_text" lang="en"><span class="">So, here, I hope you can give me an  example about simple intrinsic in X86.</span></span></div><div><span id="result_box" class="short_text" lang="en"><span class="">Thanks you.</span></span></div><div><span id="result_box" class="short_text" lang="en"><span class="">-Tristan£¨Ẹ́̀́ºÀ£©<br></span></span></div><div><br> <span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""><span id="result_box" class="short_text" lang="en"><span class=""></span></span></span></span></span></span></span></span></div></div><br><br><span title="neteasefooter"><p><br/> </p></span>