<div dir="ltr">Any tips or suggestions on how to isolate or identify this defect? It seems non-trivial to bisect this failure.<div><br></div><div>Hans: presumably this bug should block the 8.0 release?</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Feb 11, 2019 at 8:37 AM Brian Cain <<a href="mailto:brian.cain@gmail.com">brian.cain@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">rc1 did not exhibit this mismatch. A repeat of the rc2 build repeated the mismatch. I diff'd the disassembly between phase 2 and phase 3 and the difference is the same on both builds. The difference follows:<div><br></div><div><div># diff x86isel_p{2,3}.s</div><div>2c2</div><div>< Phase2/Release/llvmCore-8.0.0-rc2.obj/lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o: file format elf64-x86-64</div><div>---</div><div>> Phase3/Release/llvmCore-8.0.0-rc2.obj/lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o: file format elf64-x86-64</div><div>121757c121757</div><div>< 863: 48 8b 84 24 e0 05 00 mov 0x5e0(%rsp),%rax</div><div>---</div><div>> 863: 48 8b 84 24 b0 01 00 mov 0x1b0(%rsp),%rax</div><div>121759c121759</div><div>< 86b: 48 33 84 24 b0 01 00 xor 0x1b0(%rsp),%rax</div><div>---</div><div>> 86b: 48 33 84 24 e0 05 00 xor 0x5e0(%rsp),%rax</div><div>121761,121762c121761,121762</div><div>< 873: 8b 8c 24 e8 05 00 00 mov 0x5e8(%rsp),%ecx</div><div>< 87a: 33 8c 24 b8 01 00 00 xor 0x1b8(%rsp),%ecx</div><div>---</div><div>> 873: 8b 8c 24 b8 01 00 00 mov 0x1b8(%rsp),%ecx</div><div>> 87a: 33 8c 24 e8 05 00 00 xor 0x5e8(%rsp),%ecx</div></div><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Feb 9, 2019 at 9:54 AM Brian Cain <<a href="mailto:brian.cain@gmail.com" target="_blank">brian.cain@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="ltr">rc2 build on Ubuntu 16.04 saw a stage 2/3 mismatch on X86IselLowering.cpp.o -- I didn't try to build rc1 for 16.04 but I can try it now to see if it's there too. </div><div dir="ltr"><br></div><div dir="ltr">I can pass along logs if anyone wants to investigate. </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 7, 2019 at 9:41 AM Hans Wennborg via Release-testers <<a href="mailto:release-testers@lists.llvm.org" rel="noreferrer noreferrer" target="_blank">release-testers@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Dear testers,<br>
<br>
8.0.0-rc2 has been tagged from the release_80 branch at r353413.<br>
<br>
Please run the test script, share your results, and upload binaries.<br>
<br>
I'll get the source tarballs and docs published as soon as possible,<br>
and binaries as they become available.<br>
<br>
Thanks,<br>
Hans<br>
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</blockquote></div><br clear="all"><div><br></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_-3306838592293559057gmail_signature">-Brian</div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature">-Brian</div>