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    <p>forwarded 950900 <a class="moz-txt-link-freetext" href="https://bugs.llvm.org/show_bug.cgi?id=44849">https://bugs.llvm.org/show_bug.cgi?id=44849</a><br>
      thanks</p>
    <p><br>
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    <div class="moz-cite-prefix">Le 07/02/2020 à 23:28, Dimitri John
      Ledkov a écrit :<br>
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    <blockquote type="cite"
cite="mid:158111453058.171684.14864702808816909980.reportbug@ottawa.168.1.5">
      <pre class="moz-quote-pre" wrap="">Package: llvm-toolchain-10
Severity: important

Dear Maintainer,

llvm-toolchain-10 ftbfs on s390x with

fatal error: error in backend: Not supported instr: <MCInst 421 <MCOperand Reg:187> <MCOperand Reg:139>>
make[8]: *** [lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/build.make:326: lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o] Error 70
make[8]: Leaving directory '/<<BUILDDIR>>/llvm-toolchain-10-10.0.0~+rc1/build-llvm/tools/clang/stage2-bins'
make[7]: *** [CMakeFiles/Makefile2:30692: lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/all] Error 2
make[7]: *** Waiting for unfinished jobs....


Please note that normally on Ubuntu Focal we default to -march=z13 and
we do build on z13 instructions capable mainframe.</pre>
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    <p>the issue also exists on the Debian side:</p>
    <br>
    <pre class="bz_comment_text" id="comment_text_0"><a href="https://buildd.debian.org/status/fetch.php?pkg=llvm-toolchain-10&arch=s390x&ver=1%3A10.0.0%7E%2Brc1-1%7Eexp1&stamp=1580899435&raw=0">https://buildd.debian.org/status/fetch.php?pkg=llvm-toolchain-10&arch=s390x&ver=1%3A10.0.0%7E%2Brc1-1%7Eexp1&stamp=1580899435&raw=0</a>

S

</pre>
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