<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Indeed this has finally stuck, with just <font face="Comic Sans MS" class=""><span style="font-style: normal;" class="">clang-with-lto-ubuntu</span></font> broken at the moment. I’m inclined to leave it checked in, and try to get it into the LLVM 8 branch as well.</div><div class=""><br class=""></div><br class=""><div><blockquote type="cite" class=""><div class="">On Feb 7, 2019, at 9:18 AM, <a href="mailto:paul.robinson@sony.com" class="">paul.robinson@sony.com</a> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); 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; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">It seems the CMake changes have landed; but the docs are still a bit out of date?<o:p class=""></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">CMake.html talks about LLVM_FORCE_USE_OLD_TOOLCHAIN but not LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN.</span></div></div></div></blockquote><div><br class=""></div><div>I’m. Not sure how one updates the website’s docs, I had assumed the RST files would automatically get rebuilt and pushed? Agreed we want it fixed, but I don’t think it’s good reason to revert since the error message is pretty clear.</div><div><br class=""></div><div><br class=""></div><blockquote type="cite" class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); 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; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Also, it looks like LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN is not propagated down to the NATIVE configuration when you set LLVM_OPTIMIZED_TABLEGEN. If that's going to be a permanent deficiency, it should be mentioned in the docs as well.</span></div></div></blockquote><div><br class=""></div><div>Someone mentioned MSVC was having issues that way? <a href="https://reviews.llvm.org/rL353374#624722" class="">https://reviews.llvm.org/rL353374#624722</a></div><div>That seems like general badness in the way that configuration is set up, no? It should probably get fixed separately.</div><div><br class=""></div><br class=""><blockquote type="cite" class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); 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; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Thanks,<o:p class=""></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">--paulr<o:p class=""></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><a name="_MailEndCompose" class=""><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></a></div><div style="border-style: none none none solid; border-left-width: 1.5pt; border-left-color: blue; padding: 0in 0in 0in 4pt;" class=""><div class=""><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(181, 196, 223); padding: 3pt 0in 0in;" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><b class=""><span style="font-size: 10pt; font-family: Tahoma, sans-serif;" class="">From:</span></b><span style="font-size: 10pt; font-family: Tahoma, sans-serif;" class=""><span class="Apple-converted-space"> </span>llvm-dev [<a href="mailto:llvm-dev-bounces@lists.llvm.org" class="">mailto:llvm-dev-bounces@lists.llvm.org</a>]<span class="Apple-converted-space"> </span><b class="">On Behalf Of<span class="Apple-converted-space"> </span></b>JF Bastien via llvm-dev<br class=""><b class="">Sent:</b><span class="Apple-converted-space"> </span>Saturday, February 02, 2019 1:04 AM<br class=""><b class="">To:</b><span class="Apple-converted-space"> </span>via llvm-dev<br class=""><b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [llvm-dev] [RFC] migrating past C++11<o:p class=""></o:p></span></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">After a few attempts I think we’re in sight of success: we only have the two following bots remaining with old versions of libstdc++ and new versions of clang:<o:p class=""></o:p></div><div class=""><blockquote style="margin-left: 30pt; margin-right: 0in;" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">polly-amd64-linux<o:p class=""></o:p></div></div></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">polly-arm-linux<o:p class=""></o:p></div></div></div></blockquote><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">Once fixed the toolchain bump should stick.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><br class=""><br class=""><o:p class=""></o:p></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">On Jan 31, 2019, at 2:07 PM, JF Bastien via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org" style="color: purple; text-decoration: underline;" class="">llvm-dev@lists.llvm.org</a>> wrote:<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><br class=""><br class=""><br class=""><o:p class=""></o:p></span></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">On Jan 31, 2019, at 2:03 PM, Alex Bradbury <<a href="mailto:asb@asbradbury.org" style="color: purple; text-decoration: underline;" class="">asb@asbradbury.org</a>> wrote:<o:p class=""></o:p></span></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><o:p class=""> </o:p></span></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">On Tue, 29 Jan 2019 at 21:05, JF Bastien via llvm-dev<br class=""><<a href="mailto:llvm-dev@lists.llvm.org" style="color: purple; text-decoration: underline;" class="">llvm-dev@lists.llvm.org</a>> wrote:<br class=""><br class=""><o:p class=""></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><br class="">The patch is about ready to land, which means any older compiler will soft-error (which you can turn off with LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN). I think we should then cherry-pick the patch to the LLVM 8 branch.<br class=""><br class="">The last remaining issue are the buildbots. I audited *all* bots in<span class="apple-converted-space"> </span><a href="http://lab.llvm.org:8011/buildslaves" style="color: purple; text-decoration: underline;" class="">http://lab.llvm.org:8011/buildslaves</a><span class="apple-converted-space"> </span>(there's so many!). Some of them are down, I therefore have no idea what they run. Here are the bots that will definitely break, with their maintainers:<br class=""><br class="">Galina Kistanova <<a href="mailto:gkistanova@gmail.com" style="color: purple; text-decoration: underline;" class="">gkistanova@gmail.com</a>><br class="">am1i-slv1 -- gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4<br class="">as-bldslv4 -- Microsoft (R) Visual Studio (R) 2015 (14.0)<br class="">ps4-buildslave2 -- Microsoft (R) Visual Studio (R) 2015 (14.0)<br class=""><br class="">Hexagon QA <<a href="mailto:llvm.buildmaster@quicinc.com" style="color: purple; text-decoration: underline;" class="">llvm.buildmaster@quicinc.com</a>><br class="">hexagon-build-02 -- gcc (Ubuntu 4.9.2-10ubuntu13) 4.9.2<br class="">hexagon-build-03 -- gcc (Ubuntu 4.9.2-10ubuntu13) 4.9.2<br class=""><br class="">Vitaly Buka <<a href="mailto:vitalybuka@google.com" style="color: purple; text-decoration: underline;" class="">vitalybuka@google.com</a>><br class="">sanitizer-buildbot6 -- gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4<br class=""><br class="">Reid Kleckner <<a href="mailto:rnk@google.com" style="color: purple; text-decoration: underline;" class="">rnk@google.com</a>><br class="">sanitizer-windows -- Microsoft (R) Visual Studio (R) 2015 (14.0)<br class=""><br class="">Ilia Taraban <<a href="mailto:mstester.llvm@gmail.com" style="color: purple; text-decoration: underline;" class="">mstester.llvm@gmail.com</a>><br class="">windows7-buildbot -- Microsoft (R) Visual Studio (R) 2015 (14.0)<br class=""><br class=""><br class="">The maintainers have 3 options:<br class=""><br class="">1. Pass LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN to their bot, suffer breakage later.<br class="">2. Update the bot to a newer compiler version.<br class="">3. Entirely turn down the bot.<br class=""><br class="">I’ve emailed the maintainers and some have already responded. Once all bots are in a good state I’ll commit the patch (unless someone else chimes in with new information).<o:p class=""></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><br class="">Did anyone pick option 1)? If I understand correctly, we probably want<br class="">to ensure that at least some bots do this, so we can ensure an old<br class="">compiler + LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN build actually remains<br class="">functional up until the point support for the old compiler is actually<br class="">removed.<o:p class=""></o:p></span></div></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><o:p class=""> </o:p></span></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">Reid asked me to do so for sanitizer-windows:<o:p class=""></o:p></span></div></div></div><blockquote style="margin-left: 30pt; margin-right: 0in; caret-color: rgb(0, 0, 0); font-variant-caps: normal; text-align: start; -webkit-text-stroke-width: 0px; word-spacing: 0px;" class=""><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><a href="https://reviews.llvm.org/D57525" style="color: purple; text-decoration: underline;" class="">https://reviews.llvm.org/D57525</a><o:p class=""></o:p></span></div></div></div></blockquote><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><o:p class=""> </o:p></span></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">Ideally yes we’d have bots covering all eventualities, but this is but one of many holes in our coverage. On the upside, that hole is disappearing in a few months :)<o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><o:p class=""> </o:p></span></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><br class=""><br class=""><o:p class=""></o:p></span></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">Best,<br class=""><br class="">Alex<o:p class=""></o:p></span></div></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><br class="">_______________________________________________<br class="">LLVM Developers mailing list<br class=""></span><a href="mailto:llvm-dev@lists.llvm.org" style="color: purple; text-decoration: underline;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">llvm-dev@lists.llvm.org</span></a><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class=""><br class=""></span><a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev" style="color: purple; text-decoration: underline;" class=""><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</span></a></div></div></div></div></div></div></div></blockquote></div><br class=""></body></html>