<div dir="ltr">Yes running LLVM performance test suite with LTO and Thin LTO enabled.<div>Thanks,</div><div>Siddharth</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, May 11, 2018 at 7:32 PM, Teresa Johnson <span dir="ltr"><<a href="mailto:tejohnson@google.com" target="_blank">tejohnson@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">I'm not completely sure what you are asking. Are you looking for performance benchmarks to use for LTO and ThinLTO testing? Or are you asking how to build/run with LTO and ThinLTO? Are you asking how to run LLVM's performance test-suite with LTO and ThinLTO?<span class="HOEnZb"><font color="#888888"><br><div><br></div><div>Teresa</div></font></span></div><div class="HOEnZb"><div class="h5"><br><div class="gmail_quote"><div dir="ltr">On Fri, May 11, 2018 at 5:21 AM Siddharth Shankar Swain <<a href="mailto:h2015096@pilani.bits-pilani.ac.in" target="_blank">h2015096@pilani.bits-pilani.<wbr>ac.in</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">Hi,<div>Thanks for the info, If i only want to run performance test on benchmarks for LTO and Thin LTO enabled target, Can u suggest ways to do it ? I want to do it at my end.</div><div>Thanks,</div><div>Siddharth</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 2, 2018 at 7:03 PM, Teresa Johnson <span dir="ltr"><<a href="mailto:tejohnson@google.com" target="_blank">tejohnson@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">I've only measured performance on x86. There are some old results for SPEC cpu2006 in the blog post here:<div> <a href="http://blog.llvm.org/2016/06/thinlto-scalable-and-incremental-lto.html" target="_blank">http://blog.llvm.org/2016/06/<wbr>thinlto-scalable-and-<wbr>incremental-lto.html</a><br></div><div>The benefit is benchmark dependent, e.g. small benchmarks often don't improve much as they don't require whole program optimizations.</div><div><br></div><div>We've improved the ThinLTO optimizations since then, but I don't have any current numbers for SPEC handy.</div><div><br></div><div>Note that the performance is higher if you combine with PGO as the two techniques are complementary. I would say 5-10% improvement is pretty common (when measured on top of PGO), for codes that can benefit from whole program / cross-module optimizations.</div><div><br></div><div>Teresa</div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="m_-2332319272784075004m_8492934858772635264h5">On Tue, May 1, 2018 at 12:12 PM, Siddharth Shankar Swain 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></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="m_-2332319272784075004m_8492934858772635264h5"><div dir="ltr">Hi all,<div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">We have enabled Thin LTO and LTO for a specific target architecture. What can be the possible scopes of improvement depending on the target after we enable the basic LTO and thin LTO.? </div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Thanks,</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Siddharth</div>
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<br></blockquote></div><span class="m_-2332319272784075004m_8492934858772635264HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div class="m_-2332319272784075004m_8492934858772635264m_2842654232110643302gmail_signature" data-smartmail="gmail_signature"><span style="font-family:Times;font-size:medium"><table cellspacing="0" cellpadding="0"><tbody><tr style="color:rgb(85,85,85);font-family:sans-serif;font-size:small"><td nowrap style="border-top-style:solid;border-top-color:rgb(213,15,37);border-top-width:2px">Teresa Johnson |</td><td nowrap style="border-top-style:solid;border-top-color:rgb(51,105,232);border-top-width:2px"> Software Engineer |</td><td nowrap style="border-top-style:solid;border-top-color:rgb(0,153,57);border-top-width:2px"> <a href="mailto:tejohnson@google.com" target="_blank">tejohnson@google.com</a> |</td><td nowrap style="border-top-style:solid;border-top-color:rgb(238,178,17);border-top-width:2px"> 408-460-2413</td></tr></tbody></table></span></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="m_-2332319272784075004gmail_signature" data-smartmail="gmail_signature"><span style="font-family:Times;font-size:medium"><table cellspacing="0" cellpadding="0"><tbody><tr style="color:rgb(85,85,85);font-family:sans-serif;font-size:small"><td style="border-top-style:solid;border-top-color:rgb(213,15,37);border-top-width:2px">Teresa Johnson |</td><td style="border-top-style:solid;border-top-color:rgb(51,105,232);border-top-width:2px"> Software Engineer |</td><td style="border-top-style:solid;border-top-color:rgb(0,153,57);border-top-width:2px"> <a href="mailto:tejohnson@google.com" target="_blank">tejohnson@google.com</a> |</td><td style="border-top-style:solid;border-top-color:rgb(238,178,17);border-top-width:2px"> 408-460-2413</td></tr></tbody></table></span></div>
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