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Hi Lang,<br>
<br>
> can you share your EngineBuilder configuration lines?<br>
<br>
Sure.<br>
<br>
The 3.5.2 version use:<br>
<br>
<big><big><tt> llvm::ExecutionEngine* ee =</tt><tt><br>
</tt><tt> llvm::EngineBuilder(module)</tt><tt><br>
</tt><tt> .setEngineKind(llvm::EngineKind::JIT)</tt><tt><br>
</tt><tt>
.setOptLevel(llvm::CodeGenOpt::Aggressive)</tt><tt><br>
</tt><tt> .create();</tt><tt><br>
</tt><tt><br>
</tt><tt>
module->setDataLayout(ee->getTargetMachine()->getDataLayout());</tt><tt><br>
</tt></big></big><br>
And the 3.7.1 version use:<br>
<br>
<big><big><tt> llvm::EngineBuilder builder(move(modulePtr));</tt><tt><br>
</tt><tt><br>
</tt><tt> builder.setEngineKind(llvm::EngineKind::JIT);</tt><tt><br>
</tt><tt> builder.setErrorStr(&error);</tt><tt><br>
</tt><tt>
builder.setOptLevel(llvm::CodeGenOpt::Aggressive);</tt><tt><br>
</tt><tt><br>
</tt><tt> llvm::ExecutionEngine* ee = builder.create();<br>
<br>
module->setDataLayout(*ee->getTargetMachine()->getDataLayout());<br>
</tt><tt></tt></big></big><br>
Cheers<br>
Morten<br>
<br>
<div class="moz-cite-prefix">On 05/02/16 19:13, Lang Hames wrote:<br>
</div>
<blockquote
cite="mid:3DEAD961-D989-40C6-A314-BBC51183F591@gmail.com"
type="cite">
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<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
moz-do-not-send="true"
href="http://llvm.org/docs/doxygen/html/classllvm_1_1EngineBuilder.html"><a class="moz-txt-link-freetext" href="http://llvm.org/docs/doxygen/html/classllvm_1_1EngineBuilder.html">http://llvm.org/docs/doxygen/html/classllvm_1_1EngineBuilder.html</a></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
moz-do-not-send="true" href="mailto:llvm-dev@lists.llvm.org"><a class="moz-txt-link-abbreviated" href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a></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 moz-do-not-send="true"
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"><a class="moz-txt-link-abbreviated" href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a></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">
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