llvm 10 rc1 fails to build on s390x - stage2 build

[sylvestre]

Bugzilla Link	44849
Resolution	FIXED
Resolved on	Feb 12, 2020 01:54
Version	trunk
OS	Linux
Blocks	#43900
CC	@efriedma-quic,@zmodem,@JonPsson

Extended Description

fatal error: error in backend: Not supported instr: <MCInst 421 >
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 '/<>/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....

Full log:
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

Reported: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=950900

[sylvestre]

assigned to @JonPsson

[zmodem]

Would it be possible to get preprocessed source and compiler invocation so this can be reproduced?

[JonPsson]

I was just able to reproduce it... looking...

[JonPsson]

Suggested patch at https://reviews.llvm.org/D74352

[JonPsson]

Should be fixed by 0311e28.

[slacka]

Reopening for 10.0.0 backport

0311e28

[zmodem]

Cherry-picked to 10.x in 3c94b27