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UNREACHABLE executed at /tmp/llvm-cbe/lib/Target/CBackend/CBackend.cpp:5642! #139

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DarthGandalf opened this issue Jun 19, 2021 · 1 comment
Open

UNREACHABLE executed at /tmp/llvm-cbe/lib/Target/CBackend/CBackend.cpp:5642! #139

DarthGandalf opened this issue Jun 19, 2021 · 1 comment

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@DarthGandalf
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I tried to compile something more complicated than hello world, and wrote this compiler wrapper to build native binary:

cbe.sh 
#!/bin/bash

args=()
opt_args=()
o_file=""
c_option=no

while [[ $# -gt 0 ]]; do
	case "$1" in
		-o)
			o_file="$2"
			shift
			;;
		-c)
			c_option=yes
			;;
		-O*|-f*)
			opt_args+=("$1")
			args+=("$1")
			;;
		*)
			args+=("$1")
			;;
	esac
	shift
done

if [[ -z "$o_file" ]]; then
	if [[ "$c_option" == no ]]; then
		o_file=a.out
	fi
fi

echo "cbe: ${o_file}|${c_option}|${args[@]}|"

if [[ $c_option == yes ]]; then
	clang -S -emit-llvm -o "${o_file}.ll" ${args[@]} &&
	/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe "${o_file}.ll" -o "${o_file}.cbe.c" &&
	gcc -c "${o_file}.cbe.c" -o "${o_file}" ${opt_args[@]}
else
	g++ -o "${o_file}" ${args[@]}
fi

result=$?
ls -l "${o_file}"
exit $?

Then I passed it to cmake. Surprisingly, configure tests done by cmake itself passed.

env CXX=/tmp/cbe.sh CC=/tmp/cbe.sh cmake .. 
$ env CXX=/tmp/cbe.sh CC=/tmp/cbe.sh cmake .. -DCMAKE_INSTALL_PREFIX=/tmp/znc -DCMAKE_CXX_FLAGS="-O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls" -DCMAKE_BUILD_TYPE=Debug -DVERSION_EXTRA=+dev 
-- The CXX compiler identification is GNU 10.3.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /tmp/cbe.sh - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Checking for C++11 support
-- Checking for C++11 support - supported
-- Looking for C++ include pthread.h
-- Looking for C++ include pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Check if compiler accepts -pthread
-- Check if compiler accepts -pthread - no
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Checking for 64-bit off_t
-- Checking for 64-bit off_t - present
-- Checking for fseeko/ftello
-- Checking for fseeko/ftello - present
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.2")
-- Found OpenSSL: /usr/lib64/libcrypto.so (found version "1.1.1k")
-- Found ZLIB: /usr/lib64/libz.so (found version "1.2.11")
-- Checking for module 'libsasl2'
--   Found libsasl2, version 2.1.27
-- Checking for module 'icu-uc'
--   Found icu-uc, version 69.1
-- Found SWIG: /usr/bin/swig (found suitable version "4.0.2", minimum required is "3.0.0")
-- Found PerlLibs: /usr/lib64/perl5/5.32/x86_64-linux/CORE (found suitable version "5.32.1", minimum required is "5.10")
-- Found Perl: /usr/bin/perl (found suitable version "5.32.1", minimum required is "5.10")
-- Found Python3: /usr/include/python3.9 (found version "3.9.4") found components: Development Development.Module Development.Embed
-- Found Boost: /usr/lib64/cmake/Boost-1.76.0/BoostConfig.cmake (found version "1.76.0") found components: locale
-- Found Gettext: /usr/bin/msgmerge (found version "0.21")
-- Looking for getopt_long
-- Looking for getopt_long - found
-- Looking for lstat
-- Looking for lstat - found
-- Looking for getpassphrase
-- Looking for getpassphrase - not found
-- Looking for tcsetattr
-- Looking for tcsetattr - found
-- Looking for clock_gettime
-- Looking for clock_gettime - found
-- Looking for AI_ADDRCONFIG
-- Looking for AI_ADDRCONFIG - found
-- Found Git: /usr/bin/git (found version "2.31.1")
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY - Success
-- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY
-- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY - Success
-- Performing Test COMPILER_HAS_DEPRECATED_ATTR
-- Performing Test COMPILER_HAS_DEPRECATED_ATTR - Success
-- Found GoogleTest: /home/somebody/znc/git/third_party/googletest/googletest
-- Found GoogleMock: /home/somebody/znc/git/third_party/googletest/googlemock
+--------------------------+
| ZNC 1.9.x+dev configured |
|                          |
| Prefix    : /tmp/znc     |
| SSL       : yes          |
| IPv6      : yes          |
| Async DNS : yes          |
| Perl      : yes          |
| Python    : yes          |
| Tcl       : no           |
| Cyrus     : yes          |
| Charset   : yes          |
| Zlib      : yes          |
| i18n      : yes          |
+--------------------------+

Now you can run 'make' to compile ZNC

-- Configuring done
-- Generating done
-- Build files have been written to: /home/somebody/znc/git/build-cbe

The problem started during "make":

make[2]: выход из каталога «/home/somebody/znc/git/build-cbe»
make  -f src/CMakeFiles/znclib.dir/build.make src/CMakeFiles/znclib.dir/build
make[2]: вход в каталог «/home/somebody/znc/git/build-cbe»
[  1%] Building CXX object src/CMakeFiles/znclib.dir/ZNCString.cpp.o
cd /home/somebody/znc/git/build-cbe/src && /tmp/cbe.sh -DBOOST_ALL_NO_LIB -DBOOST_CHRONO_DYN_LINK -DBOOST_LOCALE_DYN_LINK -DBOOST_SYSTEM_DYN_LINK -DBOOST_THREAD_DYN_LINK -I/home/somebody/znc/git/third_party/bpstd -I/home/somebody/znc/git/include -I/home/somebody/znc/git/build-cbe/include -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -fPIC -include znc/zncconfig.h -std=c++11 -o CMakeFiles/znclib.dir/ZNCString.cpp.o -c /home/somebody/znc/git/src/ZNCString.cpp
cbe: CMakeFiles/znclib.dir/ZNCString.cpp.o|yes|-DBOOST_ALL_NO_LIB -DBOOST_CHRONO_DYN_LINK -DBOOST_LOCALE_DYN_LINK -DBOOST_SYSTEM_DYN_LINK -DBOOST_THREAD_DYN_LINK -I/home/somebody/znc/git/third_party/bpstd -I/home/somebody/znc/git/include -I/home/somebody/znc/git/build-cbe/include -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -fPIC -include znc/zncconfig.h -std=c++11 /home/somebody/znc/git/src/ZNCString.cpp|
Unsupported 'constant with cast' type i8* in: i8* bitcast (i32 (i32*, void (i8*)*)* @__pthread_key_create to i8*) (#1619)
Unsupported 'constant with cast' type in:   br i1 icmp ne (i8* bitcast (i32 (i32*, void (i8*)*)* @__pthread_key_create to i8*), i8* null), label %2, label %7, !dbg !6432 @ /usr/lib/gcc/x86_64-pc-linux-gnu/10.3.0/include/g++-v10/ext/concurrence.h:147:11
Unsupported 'constant with cast' type
UNREACHABLE executed at /tmp/llvm-cbe/lib/Target/CBackend/CBackend.cpp:5642!
 #0 0x00007fbc7c2bf30a llvm::sys::PrintStackTrace(llvm::raw_ostream&) /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/lib/Support/Unix/Signals.inc:568:3
 #1 0x00007fbc7c2bd0c4 llvm::sys::RunSignalHandlers() /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/lib/Support/Signals.cpp:68:20
 #2 0x00007fbc7c2bd8e5 SignalHandler /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/lib/Support/Unix/Signals.inc:396:31
 #3 0x00007fbc7b2f2670 (/lib64/libc.so.6+0x38670)
 #4 0x00007fbc7b2f25f1 raise /mnt/portagetmp/portage/sys-libs/glibc-2.33/work/glibc-2.33/signal/../sysdeps/unix/sysv/linux/raise.c:50:1
 #5 0x00007fbc7b2dc536 abort /mnt/portagetmp/portage/sys-libs/glibc-2.33/work/glibc-2.33/stdlib/abort.c:81:7
 #6 0x00007fbc7c1e93da (/usr/lib/llvm/11/lib64/libLLVM-11.so+0xa0b3da)
 #7 0x000056304461e0ff std::pair<std::__strip_reference_wrapper<std::decay<llvm::AttributeList>::type>::__type, std::__strip_reference_wrapper<std::decay<llvm::CallingConv::._anon_163>::type>::__type> std::make_pair<llvm::AttributeList, llvm::CallingConv::._anon_163>(llvm::AttributeList&&, llvm::CallingConv::._anon_163&&) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x360ff)
 #8 0x000056304460ac89 llvm_cbe::CWriter::printConstantWithCast(llvm::Constant*, unsigned int) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x22c89)
 #9 0x00005630446089ef llvm_cbe::CWriter::printConstant(llvm::Constant*, llvm_cbe::CWriter::OperandContext) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x209ef)
#10 0x000056304460b325 llvm_cbe::CWriter::writeOperandInternal(llvm::Value*, llvm_cbe::CWriter::OperandContext) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x23325)
#11 0x000056304460b440 llvm_cbe::CWriter::writeOperand(llvm::Value*, llvm_cbe::CWriter::OperandContext) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x23440)
#12 0x000056304461661b llvm_cbe::CWriter::visitBranchInst(llvm::BranchInst&) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x2e61b)
#13 0x0000563044637843 llvm::InstVisitor<llvm_cbe::CWriter, void>::visitBr(llvm::BranchInst&) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x4f843)
#14 0x00005630446306fe llvm::InstVisitor<llvm_cbe::CWriter, void>::visit(llvm::Instruction&) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x486fe)
#15 0x00005630446158bc llvm_cbe::CWriter::printBasicBlock(llvm::BasicBlock*) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x2d8bc)
#16 0x0000563044615087 llvm_cbe::CWriter::printFunction(llvm::Function&) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x2d087)
#17 0x00005630446033ae llvm_cbe::CWriter::runOnFunction(llvm::Function&) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x1b3ae)
#18 0x00007fbc7c401033 llvm::FPPassManager::runOnFunction(llvm::Function&) /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/lib/IR/LegacyPassManager.cpp:1517:7
#19 0x00007fbc7c401d23 llvm::ilist_node_impl<llvm::ilist_detail::node_options<llvm::Function, false, false, void> >::getNext() /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/include/llvm/ADT/ilist_node.h:66:66
#20 0x00007fbc7c401d23 llvm::ilist_iterator<llvm::ilist_detail::node_options<llvm::Function, false, false, void>, false, false>::operator++() /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/include/llvm/ADT/ilist_iterator.h:157:25
#21 0x00007fbc7c401d23 llvm::FPPassManager::runOnModule(llvm::Module&) /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/lib/IR/LegacyPassManager.cpp:1551:22
#22 0x00007fbc7c40021b runOnModule /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/lib/IR/LegacyPassManager.cpp:1618:7
#23 0x00007fbc7c40021b llvm::legacy::PassManagerImpl::run(llvm::Module&) /mnt/portagetmp/portage/sys-devel/llvm-11.1.0/work/llvm/lib/IR/LegacyPassManager.cpp:614:55
#24 0x00005630445fab22 compileModule(char**, llvm::LLVMContext&) (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x12b22)
#25 0x00005630445f9efe main (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x11efe)
#26 0x00007fbc7b2dd80e __libc_start_main /mnt/portagetmp/portage/sys-libs/glibc-2.33/work/glibc-2.33/csu/../csu/libc-start.c:366:3
#27 0x00005630445f967a _start (/tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe+0x1167a)
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
Stack dump:
0.      Program arguments: /tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe CMakeFiles/znclib.dir/ZNCString.cpp.o.ll -o CMakeFiles/znclib.dir/ZNCString.cpp.o.cbe.c 
1.      Running pass 'Function Pass Manager' on module 'CMakeFiles/znclib.dir/ZNCString.cpp.o.ll'.
2.      Running pass 'C backend' on function '@_ZN9__gnu_cxx7__mutex4lockEv'
/tmp/cbe.sh: строка 42:  2440 Аварийный останов         /tmp/llvm-cbe/build/tools/llvm-cbe/llvm-cbe "${o_file}.ll" -o "${o_file}.cbe.c"
ls: невозможно получить доступ к 'CMakeFiles/znclib.dir/ZNCString.cpp.o': Нет такого файла или каталога
make[2]: *** [src/CMakeFiles/znclib.dir/build.make:87: src/CMakeFiles/znclib.dir/ZNCString.cpp.o] Ошибка 2
make[2]: выход из каталога «/home/somebody/znc/git/build-cbe»
make[1]: *** [CMakeFiles/Makefile2:1567: src/CMakeFiles/znclib.dir/all] Ошибка 2
make[1]: выход из каталога «/home/somebody/znc/git/build-cbe»
make: *** [Makefile:149: all] Ошибка 2


$ clang -v
clang version 11.1.0
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm/11/bin
Selected GCC installation: /usr/lib/gcc/x86_64-pc-linux-gnu/10.3.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
Found CUDA installation: /opt/cuda, version 10.2

$ uname -a
Linux komputer 5.4.115-gentoo-dist #1 SMP Wed Apr 28 18:53:35 -00 2021 x86_64 AMD Ryzen 9 3900X 12-Core Processor AuthenticAMD GNU/Linux

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/10.3.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /mnt/portagetmp/portage/sys-devel/gcc-10.3.0/work/gcc-10.3.0/configure --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/10.3.0 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/10.3.0/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/10.3.0 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/10.3.0/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/10.3.0/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/10.3.0/include/g++-v10 --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/10.3.0/python --enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt --disable-werror --with-system-zlib --enable-nls --without-included-gettext --enable-checking=release --with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo 10.3.0 p1' --disable-esp --enable-libstdcxx-time --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64 --disable-fixed-point --enable-targets=all --enable-libgomp --disable-libssp --disable-libada --disable-systemtap --disable-vtable-verify --disable-libvtv --without-zstd --enable-lto --without-isl --enable-default-pie --enable-default-ssp
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.3.0 (Gentoo 10.3.0 p1)

Version d667885
The program which I was building is https://github.com/znc/znc at commit 688645413c258f1fe42a39e42e5b5d1dead03d71
@DarthGandalf
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Here's the .ll file which was fed as input to llvm-cbe

ZNCString.cpp.o.ll.gz

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@DarthGandalf