<div dir="ltr">Sure:<div><br></div><div><div>echristo@jhereg ~/s/l/t/clang> git svn dcommit</div><div>Committing to <a href="https://llvm.org/svn/llvm-project/cfe/trunk">https://llvm.org/svn/llvm-project/cfe/trunk</a> ...</div><div><span style="white-space:pre">   </span>M<span style="white-space:pre">    </span>docs/UsersManual.rst</div><div>Committed r323902</div></div><div><br></div><div>-eric</div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Jan 31, 2018 at 12:16 AM Victor Leschuk via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div text="#000000" bgcolor="#FFFFFF">
    <p>Maybe we should update the documentation to state this directly?
      Currently its a little bit confusing.<br>
    </p></div><div text="#000000" bgcolor="#FFFFFF">
    <br>
    <div class="m_860084639038463295moz-cite-prefix">On 01/29/2018 05:51 AM, Xinliang David
      Li wrote:<br>
    </div>
    <blockquote type="cite">
      
      <div dir="ltr">It means using PGO with -O2 and above (including
        -O3).
        <div><br>
        </div>
        <div>David</div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Sun, Jan 28, 2018 at 6:48 PM, Victor
          Leschuk via llvm-dev <span dir="ltr"><<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello all,<br>
            <br>
            clang-related PGO documentation recommends using PGO with
            -O2 (for<br>
            example:<br>
            <a href="https://clang.llvm.org/docs/UsersManual.html#profile-guided-optimization" rel="noreferrer" target="_blank">https://clang.llvm.org/docs/UsersManual.html#profile-guided-optimization</a>).<br>
            The question is: is there any reason why exactly -O2 is used
            in<br>
            examples? Are there any factors which can cause problems
            when using PGO<br>
            with -O3?<br>
            <br>
            Thanks in advance for your advice!<br>
            <span class="m_860084639038463295HOEnZb"><font color="#888888"><br>
                --<br>
                Best Regards,<br>
                <br>
                Victor Leschuk | Software Engineer | Access Softek<br>
                <br>
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              </font></span></blockquote>
        </div>
        <br>
      </div>
    </blockquote>
    <br>
    <pre class="m_860084639038463295moz-signature" cols="72">-- 
Best Regards,

Victor Leschuk | Software Engineer | Access Softek</pre>
  </div>

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