<div dir="ltr">Thanks for the comment. The performance experiments were performed on Intel Sandybridge. Updated this info to the patch description.<div><br></div><div>Dehao</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Feb 12, 2017 at 8:24 AM, Sanjay Patel <span dir="ltr"><<a href="mailto:spatel@rotateright.com" target="_blank">spatel@rotateright.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Since we can override the settings, I have no objections. <br><br>I still think it would be good to document here and in the review/commit message which CPU model was used to acquire the experimental data. That could be useful to anyone that comes along later and wants to reproduce and/or compare to the original, motivating data.<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 10, 2017 at 4:53 PM, Dehao Chen <span dir="ltr"><<a href="mailto:dehao@google.com" target="_blank">dehao@google.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Thanks Hal, could you help approve <a href="https://reviews.llvm.org/D28368" target="_blank">https://reviews.llvm.o<wbr>rg/D28368</a>?<div><br></div><div>I'll hold off until early Tuesday in case other people have more concerns.</div><div><br></div><div>Thanks,</div><div>Dehao</div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="m_-3091384832346738911h5">On Fri, Feb 10, 2017 at 3:23 PM, Hal Finkel <span dir="ltr"><<a href="mailto:hfinkel@anl.gov" target="_blank">hfinkel@anl.gov</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><div><div class="m_-3091384832346738911h5">
<p><br>
</p>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944moz-cite-prefix">On 02/10/2017 05:21 PM, Dehao Chen
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Thanks every for the comments.
<div><br>
</div>
<div>Do we have a decision here?</div>
</div>
</blockquote>
<br>
You're good to go as far as I'm concerned.<br>
<br>
-Hal<br>
<br>
</div></div><blockquote type="cite">
<div dir="ltr">
<div><br>
</div>
<div>Dehao</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote"><div><div class="m_-3091384832346738911h5">On Tue, Feb 7, 2017 at 10:24 PM, Hal
Finkel <span dir="ltr"><<a href="mailto:hfinkel@anl.gov" target="_blank">hfinkel@anl.gov</a>></span>
wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><div><div class="m_-3091384832346738911h5"><span>
<p><br>
</p>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412moz-cite-prefix">On
02/07/2017 05:29 PM, Sanjay Patel via llvm-dev wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Sorry if I missed it, but what
machine/CPU are you using to collect the perf
numbers? <br>
<br>
I am concerned that what may be a win on a CPU that
keeps a couple of hundred instructions in-flight and
has many MB of caches will not hold for a small
core. <br>
</div>
</blockquote>
<br>
</span> In my experience, unrolling tends to help weaker
cores even more than stronger ones because it allows the
instruction scheduler more opportunities to hide latency.
Obviously, instruction-cache pressure is an important
consideration, but the code size changes here seems small.<span><br>
<br>
<blockquote type="cite">
<div dir="ltr"><br>
Is the proposed change universal? Is there a way to
undo it?<br>
</div>
</blockquote>
<br>
</span> All of the unrolling thresholds should be
target-adjustable using the TTI::getUnrollingPreferences
hook.<br>
<br>
-Hal
<div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944h5"><br>
<br>
<blockquote type="cite">
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Feb 7, 2017 at
3:26 PM, Dehao Chen 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">
<div dir="ltr">Ping... with the updated code
size impact data, any more comments? Any
more data that would be interesting to
collect?
<div><br>
</div>
<div>Thanks,</div>
<div>Dehao</div>
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412HOEnZb">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412h5">
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Feb 2,
2017 at 2:07 PM, Dehao Chen <span dir="ltr"><<a href="mailto:dehao@google.com" target="_blank">dehao@google.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"> Here is the code
size impact for clang, chrome and
24 google internal benchmarks
(name omited, 14 15 16 are
encoding/decoding benchmarks
similar as h264). There are 2
columns, for threshold 300 and 450
respectively.
<div><br>
</div>
<div>I also tested the llvm test
suite. Changing the threshold to
300/450 does not affect code gen
for any binary in the test
suite.</div>
<div><br>
</div>
<div><br>
<table cellspacing="0" border="0">
<colgroup width="85" span="3"></colgroup>
<tbody>
<tr>
<td height="17" align="left"><br>
</td>
<td align="right">300</td>
<td align="right">450</td>
</tr>
<tr>
<td height="17" align="left">clang</td>
<td align="right">0.30%</td>
<td align="right">0.63%</td>
</tr>
<tr>
<td height="17" align="left">chrome</td>
<td align="right">0.00%</td>
<td align="right">0.00%</td>
</tr>
<tr>
<td height="17" align="right">1</td>
<td align="right">0.27%</td>
<td align="right">0.67%</td>
</tr>
<tr>
<td height="17" align="right">2</td>
<td align="right">0.44%</td>
<td align="right">0.93%</td>
</tr>
<tr>
<td height="17" align="right">3</td>
<td align="right">0.44%</td>
<td align="right">0.93%</td>
</tr>
<tr>
<td height="17" align="right">4</td>
<td align="right">0.26%</td>
<td align="right">0.53%</td>
</tr>
<tr>
<td height="17" align="right">5</td>
<td align="right">0.74%</td>
<td align="right">2.21%</td>
</tr>
<tr>
<td height="17" align="right">6</td>
<td align="right">0.74%</td>
<td align="right">2.21%</td>
</tr>
<tr>
<td height="17" align="right">7</td>
<td align="right">0.74%</td>
<td align="right">2.21%</td>
</tr>
<tr>
<td height="17" align="right">8</td>
<td align="right">0.46%</td>
<td align="right">1.05%</td>
</tr>
<tr>
<td height="17" align="right">9</td>
<td align="right">0.35%</td>
<td align="right">0.86%</td>
</tr>
<tr>
<td height="17" align="right">10</td>
<td align="right">0.35%</td>
<td align="right">0.86%</td>
</tr>
<tr>
<td height="17" align="right">11</td>
<td align="right">0.40%</td>
<td align="right">0.83%</td>
</tr>
<tr>
<td height="17" align="right">12</td>
<td align="right">0.32%</td>
<td align="right">0.65%</td>
</tr>
<tr>
<td height="17" align="right">13</td>
<td align="right">0.31%</td>
<td align="right">0.64%</td>
</tr>
<tr>
<td height="17" align="right">14</td>
<td align="right">4.52%</td>
<td align="right">8.23%</td>
</tr>
<tr>
<td height="17" align="right">15</td>
<td align="right">9.90%</td>
<td align="right">19.38%</td>
</tr>
<tr>
<td height="17" align="right">16</td>
<td align="right">9.90%</td>
<td align="right">19.38%</td>
</tr>
<tr>
<td height="17" align="right">17</td>
<td align="right">0.68%</td>
<td align="right">1.97%</td>
</tr>
<tr>
<td height="17" align="right">18</td>
<td align="right">0.21%</td>
<td align="right">0.48%</td>
</tr>
<tr>
<td height="17" align="right">19</td>
<td align="right">0.99%</td>
<td align="right">3.44%</td>
</tr>
<tr>
<td height="17" align="right">20</td>
<td align="right">0.19%</td>
<td align="right">0.46%</td>
</tr>
<tr>
<td height="17" align="right">21</td>
<td align="right">0.57%</td>
<td align="right">1.62%</td>
</tr>
<tr>
<td height="17" align="right">22</td>
<td align="right">0.37%</td>
<td align="right">1.05%</td>
</tr>
<tr>
<td height="17" align="right">23</td>
<td align="right">0.78%</td>
<td align="right">1.30%</td>
</tr>
<tr>
<td height="17" align="right">24</td>
<td align="right">0.51%</td>
<td align="right">1.54%</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395HOEnZb">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395h5">
<div class="gmail_extra"><br>
<div class="gmail_quote">On
Wed, Feb 1, 2017 at 6:08 PM,
Mikhail Zolotukhin 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">
<div style="word-wrap:break-word">
<div>
<div><span>
<blockquote type="cite">
<div>On Feb 1,
2017, at 4:57
PM, Xinliang
David Li via
llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>>
wrote:</div>
<br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851Apple-interchange-newline">
<div>
<div dir="ltr">clang,
chrome, and
some internal
large apps are
good
candidates for
size metrics.</div>
</div>
</blockquote>
</span>I'd also add
the standard LLVM
testsuite just
because it's the
suite everyone in
the community can
use.
<div><br>
</div>
<div>Michael<br>
</div>
<div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058h5">
<blockquote type="cite">
<div>
<div dir="ltr">
<div><br>
</div>
<div>David</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On
Wed, Feb 1,
2017 at 4:47
PM, Chandler
Carruth 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">
<div dir="ltr">I
had suggested
having size
metrics from
somewhat
larger
applications
such as
Chrome,
Webkit, or
Firefox; clang
itself; and
maybe some of
our internal
binaries with
rough size
brackets?</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851HOEnZb">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851h5"><br>
<div class="gmail_quote">
<div dir="ltr">On
Wed, Feb 1,
2017 at 4:33
PM Dehao Chen
<<a href="mailto:dehao@google.com" target="_blank">dehao@google.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">With
the new data
points, any
comments on
whether this
can justify
setting fully
inline
threshold to
300 (or any
other number)
in O2? I can
collect more
data points if
it's helpful.
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">Thanks,</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">Dehao</div>
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_extra
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">On
Tue, Jan 31,
2017 at 3:20
PM, Dehao Chen
<span dir="ltr" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><<a href="mailto:dehao@google.com" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" target="_blank">dehao@google.com</a>></span> wrote:<br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<blockquote class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">Recollected
the data from
trunk head
with stddev
data and more
threshold data
points
attached:
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">Performance:</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<table class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" cellspacing="0" border="0">
<colgroup class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" width="85" span="6"></colgroup>
<tbody class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="left"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="left">stddev/mean</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">300</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">450</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">600</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">750</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">403</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.37%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.11%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.11%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.09%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.79%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">433</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.14%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.51%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.25%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">-0.63%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">-0.29%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">445</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.08%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.48%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.89%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.12%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.83%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">447</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.16%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">3.50%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">2.69%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">3.66%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">3.59%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">453</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.11%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">1.49%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.45%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">-0.07%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.78%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">464</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.17%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.75%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">1.80%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">1.86%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">1.54%</td>
</tr>
</tbody>
</table>
<br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">Code
size:</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<table class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" cellspacing="0" border="0">
<colgroup class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" width="85" span="5"></colgroup>
<tbody class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="left"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">300</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">450</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">600</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">750</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">403</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.56%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">2.41%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">2.74%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">3.75%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">433</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.96%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">2.84%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">4.19%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">4.87%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">445</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">2.16%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">3.62%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">4.48%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">5.88%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">447</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">2.96%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">5.09%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">6.74%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">8.89%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">453</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">0.94%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">1.67%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">2.73%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">2.96%</td>
</tr>
<tr class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" height="17" align="right">464</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">8.02%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">13.50%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">20.51%</td>
<td class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" align="right">26.59%</td>
</tr>
</tbody>
</table>
<br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">Compile
time is
proportional
in the
experiments
and more
noisy, so I
did not
include it.</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">We
have >2%
speedup on
some google
internal
benchmarks
when switching
the threshold
from 150 to
300.</div>
<span class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241HOEnZbm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><font class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" color="#888888">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">Dehao</div>
</font></span></div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241HOEnZbm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241h5">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_extra
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">On
Mon, Jan 30,
2017 at 5:06
PM, Chandler
Carruth <span dir="ltr" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><<a href="mailto:chandlerc@google.com" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" target="_blank">chandlerc@google.com</a>></span> wrote:<br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<blockquote class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><span class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<div dir="ltr" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">On
Mon, Jan 30,
2017 at 4:59
PM Mehdi Amini
<<a href="mailto:mehdi.amini@apple.com" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" target="_blank">mehdi.amini@apple.com</a>> wrote:<br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
</span><span class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
<blockquote class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<blockquote type="cite" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
</blockquote>
</div>
</div>
<div style="word-wrap:break-word" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<blockquote type="cite" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
<blockquote class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655m_-6293897042106820945h5
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<blockquote class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655m_-6293897042106820945m_-4486181801685859403gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg" style="word-wrap:break-word">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655m_-6293897042106820945m_-4486181801685859403gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655m_-6293897042106820945m_-4486181801685859403gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655m_-6293897042106820945m_-4486181801685859403gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655m_-6293897042106820945m_-4486181801685859403gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">Another
question is
about PGO
integration:
is it already
hooked there?
Should we have
a more
aggressive
threshold in a
hot function?
(Assuming
we’re willing
to spend some
binary size
there but not
on the cold
path).</div>
</div>
</div>
</blockquote>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
</div>
</div>
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">I
would even
wire the
*unrolling*
the other way:
just suppress
unrolling in
cold paths to
save binary
size. rolled
loops seem
like a
generally good
thing in cold
code unless
they are
having some
larger impact
(IE, the loop
itself is more
expensive than
the unrolled
form).</div>
</div>
</div>
</blockquote>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">Agree
that we could
suppress
unrolling in
cold path to
save code
size. But
that's
orthogonal
with the
propose here.
This proposal
focuses on O2
performance:
shall we have
different
(higher) fully
unroll
threshold than
dynamic/partial unroll.</div>
</div>
</div>
</blockquote>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
</div>
</div>
</div>
<div style="word-wrap:break-word" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">I
agree that
this is (to
some extent)
orthogonal,
and it makes
sense to me to
differentiate
the threshold
for full
unroll and the
dynamic/partial case.</div>
</div>
</div>
</blockquote>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
</span>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">There
is one issue
that makes
these not
orthogonal.</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">If
even *static*
profile hints
will reduce
some of the
code size
increase
caused by
higher
unrolling
thresholds for
non-cold code,
we should
factor that
into the
tradeoff in
picking where
the threshold
goes.</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg"><br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">However,
getting PGO
into the full
unroller is
currently
challenging
outside of the
new pass
manager. We
already have
some
unfortunate
hacks around
this in
LoopUnswitch
that are
making the
port of it to
the new PM
more annoying.</div>
<blockquote class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<blockquote type="cite" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msgm_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
<blockquote class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr" class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg">
<div class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412gmail_quote
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg"><span class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg
m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588m_1694617720154745241m_6119381627642025574m_-8823773316722963655gmail_msg"></span></div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
<br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
</div>
</div>
</blockquote>
</div>
<br class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412m_-4814779693185880395m_8897563994913029058m_6216879383400100851m_8709703343599191588gmail_msg">
</div>
</blockquote>
</div>
</div>
</div>
<br>
______________________________<wbr>_________________<br>
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<br>
</blockquote>
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<br>
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<fieldset class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412mimeAttachmentHeader"></fieldset>
<br>
<pre>______________________________<wbr>_________________
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<a class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412moz-txt-link-abbreviated" href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>
<a class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412moz-txt-link-freetext" href="http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev" target="_blank">http://lists.llvm.org/cgi-bin/<wbr>mailman/listinfo/llvm-dev</a><span class="HOEnZb"><font color="#888888"><span class="m_-3091384832346738911m_-223130339941372021HOEnZb"><font color="#888888">
</font></span></font></span></pre><span class="HOEnZb"><font color="#888888"><span class="m_-3091384832346738911m_-223130339941372021HOEnZb"><font color="#888888">
</font></span></font></span></blockquote><span class="HOEnZb"><font color="#888888"><span class="m_-3091384832346738911m_-223130339941372021HOEnZb"><font color="#888888">
</font></span></font></span></div></div></div></div><span class="HOEnZb"><font color="#888888"><span class="m_-3091384832346738911HOEnZb"><font color="#888888"><span class="m_-3091384832346738911m_-223130339941372021HOEnZb"><font color="#888888"><span class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944HOEnZb"><font color="#888888"><pre class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944m_5543670116359683412moz-signature" cols="72">--
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory</pre>
</font></span></font></span></font></span></font></span></div><span class="HOEnZb"><font color="#888888"><span class="m_-3091384832346738911m_-223130339941372021HOEnZb"><font color="#888888">
</font></span></font></span></blockquote></div><span class="HOEnZb"><font color="#888888"><span class="m_-3091384832346738911m_-223130339941372021HOEnZb"><font color="#888888">
</font></span></font></span></div><span class="HOEnZb"><font color="#888888"><span class="m_-3091384832346738911m_-223130339941372021HOEnZb"><font color="#888888">
</font></span></font></span></blockquote><span class="HOEnZb"><font color="#888888"><span><span class="m_-3091384832346738911m_-223130339941372021HOEnZb"><font color="#888888">
<pre class="m_-3091384832346738911m_-223130339941372021m_-7300748067540311944moz-signature" cols="72">--
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory</pre></font></span></span></font></span></div></blockquote></div><span class="HOEnZb"><font color="#888888"><br></font></span></div>
</blockquote></div><br></div>
</blockquote></div><br></div>