<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Issue</th>
<td>
<a href=https://github.com/llvm/llvm-project/issues/59909>59909</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>
error in backend: Cannot select: 0x7f8f9e8b17d0: v8i64 = X86ISD::PCMPEQ
</td>
</tr>
<tr>
<th>Labels</th>
<td>
</td>
</tr>
<tr>
<th>Assignees</th>
<td>
</td>
</tr>
<tr>
<th>Reporter</th>
<td>
jozefizso
</td>
</tr>
</table>
<pre>
I'm build the [cado-nfs](https://gitlab.inria.fr/cado-nfs/cado-nfs) on macOS 12.6 (MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports))
It fails to compile **merge_compute_weights.c.o** file and ends with this error:
```
fatal error: error in backend: Cannot select: 0x7f8f9e8b17d0: v8i64 = X86ISD::PCMPEQ 0x7f8f9e8839a0, 0x7f8f9e884020
0x7f8f9e8839a0: v8i64,ch = load<(load (s64) from %ir.466, align 1, !tbaa !14), zext from v8i8> 0x7f8f9da0bbf8, 0x7f8f9e8b0ad0, undef:i64
0x7f8f9e8b0ad0: i64 = add 0x7f8f9e8b0d40, Constant:i64<-24>
0x7f8f9e8b0d40: i64 = add 0x7f8f9e09aee0, 0x7f8f9e883ad8
0x7f8f9e09aee0: i64,ch = CopyFromReg 0x7f8f9da0bbf8, Register:i64 %107
0x7f8f9e09aa00: i64 = Register %107
0x7f8f9e883ad8: i64,ch = CopyFromReg 0x7f8f9da0bbf8, Register:i64 %109
0x7f8f9e8b1428: i64 = Register %109
0x7f8f9e8843c8: i64 = Constant<-24>
0x7f8f9e8b1490: i64 = undef
0x7f8f9e884020: v8i64 = BUILD_VECTOR Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
In function: compute_weights_backend
```
The tail of the `make VERBOSE=1` command:
```
[ 38%] Built target purge
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f filter/CMakeFiles/merge.dir/build.make filter/CMakeFiles/merge.dir/depend
cd /Users/jozef/Developer/cado-nfs/build/Jozi-MBP.local && /usr/local/Cellar/cmake/3.25.1/bin/cmake -E cmake_depends "Unix Makefiles" /Users/jozef/Developer/cado-nfs /Users/jozef/Developer/cado-nfs/filter /Users/jozef/Developer/cado-nfs/build/Jozi-MBP.local /Users/jozef/Developer/cado-nfs/build/Jozi-MBP.local/filter /Users/jozef/Developer/cado-nfs/build/Jozi-MBP.local/filter/CMakeFiles/merge.dir/DependInfo.cmake --color=
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f filter/CMakeFiles/merge.dir/build.make filter/CMakeFiles/merge.dir/build
[ 38%] Building C object filter/CMakeFiles/merge.dir/merge_compute_weights.c.o
cd /Users/jozef/Developer/cado-nfs/build/Jozi-MBP.local/filter && /Users/jozef/Developer/cado-nfs/build/Jozi-MBP.local/ccwrap.pl -DWITH_PTHREADS -I/usr/local/include -I/Users/jozef/Developer/cado-nfs -I/Users/jozef/Developer/cado-nfs/utils -I/Users/jozef/Developer/cado-nfs/utils/embedded -I/Users/jozef/Developer/cado-nfs/build/Jozi-MBP.local -I/Users/jozef/Developer/cado-nfs/gf2x -I/Users/jozef/Developer/cado-nfs/build/Jozi-MBP.local/gf2x -std=c99 -W -Wall -O2 -mpopcnt -mavx -mavx2 -mavx512f -mavx512vl -mavx512dq -mpclmul -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.1.sdk -mmacosx-version-min=12.6 -MD -MT filter/CMakeFiles/merge.dir/merge_compute_weights.c.o -MF CMakeFiles/merge.dir/merge_compute_weights.c.o.d -o CMakeFiles/merge.dir/merge_compute_weights.c.o -c /Users/jozef/Developer/cado-nfs/filter/merge_compute_weights.c
fatal error: error in backend: Cannot select: 0x7f8f9e8b17d0: v8i64 = X86ISD::PCMPEQ 0x7f8f9e8839a0, 0x7f8f9e884020
0x7f8f9e8839a0: v8i64,ch = load<(load (s64) from %ir.466, align 1, !tbaa !14), zext from v8i8> 0x7f8f9da0bbf8, 0x7f8f9e8b0ad0, undef:i64
0x7f8f9e8b0ad0: i64 = add 0x7f8f9e8b0d40, Constant:i64<-24>
0x7f8f9e8b0d40: i64 = add 0x7f8f9e09aee0, 0x7f8f9e883ad8
0x7f8f9e09aee0: i64,ch = CopyFromReg 0x7f8f9da0bbf8, Register:i64 %107
0x7f8f9e09aa00: i64 = Register %107
0x7f8f9e883ad8: i64,ch = CopyFromReg 0x7f8f9da0bbf8, Register:i64 %109
0x7f8f9e8b1428: i64 = Register %109
0x7f8f9e8843c8: i64 = Constant<-24>
0x7f8f9e8b1490: i64 = undef
0x7f8f9e884020: v8i64 = BUILD_VECTOR Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>, Constant:i64<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
0x7f8f9e884360: i64 = Constant<0>
In function: compute_weights_backend
clang: error: clang frontend command failed with exit code 70 (use -v to see invocation)
Apple clang version 14.0.0 (clang-1400.0.29.202)
Target: x86_64-apple-darwin21.6.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
clang: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /var/folders/gn/jw60dx0571s05vl_x297r0xw0000gn/T/merge_compute_weights-382400.c
clang: note: diagnostic msg: /var/folders/gn/jw60dx0571s05vl_x297r0xw0000gn/T/merge_compute_weights-382400.sh
clang: note: diagnostic msg: Crash backtrace is located in
clang: note: diagnostic msg: /Users/jozef/Library/Logs/DiagnosticReports/clang_<YYYY-MM-DD-HHMMSS>_<hostname>.crash
clang: note: diagnostic msg: (choose the .crash file that corresponds to your crash)
clang: note: diagnostic msg:
********************
make[2]: *** [filter/CMakeFiles/merge.dir/merge_compute_weights.c.o] Error 70
make[1]: *** [filter/CMakeFiles/merge.dir/all] Error 2
make: *** [all] Error 2
make: *** [all] Error 2
```
</pre>
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