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--></style></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-size:12.0pt'>Also, it seems to impact only MacOS? One colleague wasn’t able to reproduce with Clang-12 on Linux.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>This is where this problem was discovered and is tracked, with all the details: <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><a href="https://github.com/randombit/botan/issues/2802">https://github.com/randombit/botan/issues/2802</a> <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>If you nail this one, it would be great.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Thanks!<o:p></o:p></span></p><div><div><p class=MsoNormal><span style='color:black'>--<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Uri<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><i><o:p> </o:p></i></p><p class=MsoNormal><i><span style='color:black'>There are two ways to design a system. One is to make is so simple there are obviously no deficiencies.</span></i><span style='font-size:12.0pt;color:black'><o:p></o:p></span></p><p class=MsoNormal><i><span style='color:black'>The other is to make it so complex there are no obvious deficiencies.</span></i><span style='font-size:12.0pt;color:black'><o:p></o:p></span></p><p class=MsoNormal><i><span style='color:black'> - C. A. R. Hoare</span></i><span style='font-size:12.0pt;color:black'><o:p></o:p></span></p></div></div><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:12.0pt;color:black'>From: </span></b><span style='font-size:12.0pt;color:black'>Craig Topper <craig.topper@gmail.com><br><b>Date: </b>Thursday, September 23, 2021 at 23:28<br><b>To: </b>Michael Kruse <llvmdev@meinersbur.de><br><b>Cc: </b>Uri Blumenthal <uri@ll.mit.edu>, LLVM-DEV LIST <llvm-dev@lists.llvm.org><br><b>Subject: </b>Re: [llvm-dev] Problem with clang optimizer?<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>opt-bisect points to SLP vectorizer. And it looks like it doesn't fail on trunk.<o:p></o:p></p><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><div><div><p class=MsoNormal style='margin-left:.5in'>~Craig<o:p></o:p></p></div></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div></div></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><div><p class=MsoNormal style='margin-left:.5in'>On Thu, Sep 23, 2021 at 7:39 PM Michael Kruse via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal style='margin-left:.5in'>Reproducer: <a href="https://godbolt.org/z/f6nxnG3sY" target="_blank">https://godbolt.org/z/f6nxnG3sY</a><br>(cstddef and -march must be added as well)<br><br>Michael<br>_______________________________________________<br>LLVM Developers mailing list<br><a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a><br><a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev" target="_blank">https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</a><o:p></o:p></p></blockquote></div></div></body></html>