<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hi Morten,</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Something else just occurred to me: can you share your EngineBuilder configuration lines? (<a href="http://llvm.org/docs/doxygen/html/classllvm_1_1EngineBuilder.html">http://llvm.org/docs/doxygen/html/classllvm_1_1EngineBuilder.html</a>)</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">In particular - are you explicitly setting the optimization level? The old JIT may have had a different default.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">- Lang.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature"><br><br>Sent from my iPad</div><div><br>On Feb 4, 2016, at 10:54 PM, Jim Grosbach via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>I agree with Lang and Keno here. This is both unexpected and very interesting. Given the differences in defaults between the two, I would have expected the new JIT to have better performance but longer compile times. That you are seeing the opposite implies there is something very wrong and I'm very interested to help figure out what it is. <br><br>Sent from my iPad</div><div><br>On Feb 4, 2016, at 9:12 PM, Morten Brodersen via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br><br></div><blockquote type="cite"><div>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
Hi Keno,<br>
<br>
I am talking about runtime. The performance of the generated machine
code. Not the time it takes to lower the IR to machine code.<br>
<br>
We typically only JIT once (taking a few secs) and then run the
generated machine code for hours. So the JIT time (IR -> machine
code) doesn't impact us.<br>
<br>
Cheers<br>
Morten<br>
<br>
<div class="moz-cite-prefix">On 05/02/16 15:58, Keno Fischer wrote:<br>
</div>
<blockquote cite="mid:CAEoGj_8yXx_copTV6=Qy3jrKK=CzQLANaSoHwFi3+tVyC0YKTA@mail.gmail.com" type="cite">
<div dir="ltr">Actually, reading over all of this again, I realize
I may have made the wrong statement. The runtime regressions we
see in julia are actually regressions in how long LLVM itself
takes to do the compilation (but since it happens at run time in
the JIT case, I think of it as a regression in our running
time). We have only noticed occasional regressions in the
performance of the generated code (which we are in the process
of fixing). Which kind of regression are you talking about, time
taken by LLVM or time taken by the LLVM-generated code?</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Feb 4, 2016 at 11:44 PM, Rafael
Espíndola <span dir="ltr"><<a moz-do-not-send="true" 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">On 4
February 2016 at 22:48, Morten Brodersen via llvm-dev<br>
<span class=""><<a moz-do-not-send="true" href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>>
wrote:<br>
> Hi Rafael,<br>
><br>
> Not easily (llc).<br>
><br>
> Is there a way to make MCJit not use the large code
model when JIT'ing?<br>
><br>
<br>
</span>I think Davide started adding support for the small
code model.<br>
<br>
Cheers,<br>
Rafael<br>
<div class="HOEnZb">
<div class="h5">_______________________________________________<br>
LLVM Developers mailing list<br>
<a moz-do-not-send="true" href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a><br>
<a moz-do-not-send="true" href="http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev" rel="noreferrer" target="_blank">http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</a><br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>LLVM Developers mailing list</span><br><span><a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a></span><br><span><a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev">http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</a></span><br></div></blockquote></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>LLVM Developers mailing list</span><br><span><a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a></span><br><span><a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev">http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</a></span><br></div></blockquote></body></html>