[llvm-dev] llvm-7.0.0rc2: Segmentation fault with a certain combination of options

Thu Aug 23 13:12:36 PDT 2018

I've replied on the bug: https://bugs.llvm.org/show_bug.cgi?id=38073

On Thu, Aug 23, 2018 at 4:38 AM, Siegmar Gross via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> Hi,
>
> today I've installed llvm-7.0.0rc2. Unfortunately, I still get the error
> that
> I've reported in Bug 38073 and for llvm-7.0.0rc1 (I'm still waiting for an
> approval or disapproval from the llvm-bugs list moderator). Therefore, I try
> this list today.
>
>
> loki introduction 108 clang -v
> clang version 7.0.0 (tags/RELEASE_700/rc2 340514)
> Target: x86_64-unknown-linux-gnu
> Thread model: posix
> InstalledDir: /usr/local/llvm-7.0.0/bin
> Found candidate GCC installation: /usr/lib64/gcc/x86_64-suse-linux/4.8Sorry,
> Selected GCC installation: /usr/lib64/gcc/x86_64-suse-linux/4.8
> Candidate multilib: .;@m64
> Candidate multilib: 32;@m32
> Selected multilib: .;@m64
> Found CUDA installation: /usr/local/cuda-9.0, version 9.0
> loki introduction 109
>
>
> The problem occurs with a certain combination of options (-mllvm
> -polly-parallel
> -mllvm -polly-vectorizer=stripmine). I didn't get the error with llvm-6.0.0.
>
>
> loki introduction 109 \clang -m64 -std=c11 -O2 -mllvm
> -polly-vectorizer=stripmine mat_mult_block_ikj.c -lomp -lm
>
> loki introduction 110 \clang -m64 -std=c11 -O2 -mllvm -polly -mllvm
> -polly-vectorizer=stripmine mat_mult_block_ikj.c -lomp -lm
>
> loki introduction 111 \clang -m64 -std=c11 -O2 -mllvm -polly -mllvm
> -polly-parallel mat_mult_block_ikj.c -lomp -lm
>
> loki introduction 112 \clang -m64 -std=c11 -O2 -mllvm -polly -mllvm
> -polly-parallel -mllvm -polly-vectorizer=stripmine mat_mult_block_ikj.c
> -lomp -lm
> Stack dump:
> 0.      Program arguments: /usr/local/llvm-7.0.0/bin/clang-7 -cc1 -triple
> x86_64-unknown-linux-gnu -emit-obj -disable-free -disable-llvm-verifier
> -discard-value-names -main-file-name mat_mult_block_ikj.c -mrelocation-model
> static -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases
> -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info
> -debugger-tuning=gdb -momit-leaf-frame-pointer -resource-dir
> /usr/local/llvm-7.0.0/lib64/clang/7.0.0
> -I/usr/local/intel_xe_2019beta/compilers_and_libraries_2019.0.070/linux/ipp/include
> -I/usr/local/intel_xe_2019beta/compilers_and_libraries_2019.0.070/linux/mkl/include
> -I/usr/local/intel_xe_2019beta/compilers_and_libraries_2019.0.070/linux/pstl/include
> -I/usr/local/intel_xe_2019beta/compilers_and_libraries_2019.0.070/linux/tbb/include
> -I/usr/local/intel_xe_2019beta/compilers_and_libraries_2019.0.070/linux/tbb/include
> -I/usr/local/intel_xe_2019beta/compilers_and_libraries_2019.0.070/linux/daal/include
> -c-isystem /usr/local/valgrind-3.12.0/include -c-isystem
> /usr/local/llvm-7.0.0/include -c-isystem /usr/local/include -c-isystem
> /usr/include -c-isystem /usr/local/cuda-9.0/include -c-isystem
> /usr/local/hwloc-2.0.1/include -c-isystem /home/fd1026/Linux/x86_64/include
> -internal-isystem /usr/local/include -internal-isystem
> /usr/local/llvm-7.0.0/lib64/clang/7.0.0/include -internal-externc-isystem
> /include -internal-externc-isystem /usr/include -O2 -std=c11
> -fdebug-compilation-dir
> /home/fd1026/work/skripte/master/parallel/prog/introduction -ferror-limit 19
> -fmessage-length 100 -fobjc-runtime=gcc -fdiagnostics-show-option
> -fcolor-diagnostics -vectorize-loops -vectorize-slp -mllvm -polly -mllvm
> -polly-parallel -mllvm -polly-vectorizer=stripmine -o
> /tmp/mat_mult_block_ikj-e025b7.o -x c mat_mult_block_ikj.c -faddrsig
> 1.      <eof> parser at end of file
> 2.      Code generation
> 3.      Running pass 'Function Pass Manager' on module
> 'mat_mult_block_ikj.c'.
> 4.      Running pass 'Live Variable Analysis' on function
> '@main_polly_subfn_polly_subfn'
> #0 0x00007fceab261a8a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
> (/usr/local/llvm-7.0.0/lib64/libLLVMSupport.so.7+0x115a8a)
> #1 0x00007fceab2600b5 llvm::sys::RunSignalHandlers()
> (/usr/local/llvm-7.0.0/lib64/libLLVMSupport.so.7+0x1140b5)
> #2 0x00007fceab2601cc SignalHandler(int)
> (/usr/local/llvm-7.0.0/lib64/libLLVMSupport.so.7+0x1141cc)
> #3 0x00007fceae64ac10 __restore_rt (/lib64/libpthread.so.0+0x10c10)
> #4 0x00007fceaf31420e llvm::LiveVariables::HandleVirtRegUse(unsigned int,
> llvm::MachineBasicBlock*, llvm::MachineInstr&)
> (/usr/local/llvm-7.0.0/lib64/libLLVMCodeGen.so.7+0x1a120e)
> #5 0x00007fceaf3147df llvm::LiveVariables::runOnInstr(llvm::MachineInstr&,
> llvm::SmallVectorImpl<unsigned int>&)
> (/usr/local/llvm-7.0.0/lib64/libLLVMCodeGen.so.7+0x1a17df)
> #6 0x00007fceaf315123
> llvm::LiveVariables::runOnBlock(llvm::MachineBasicBlock*, unsigned int)
> (/usr/local/llvm-7.0.0/lib64/libLLVMCodeGen.so.7+0x1a2123)
> #7 0x00007fceaf317a40
> llvm::LiveVariables::runOnMachineFunction(llvm::MachineFunction&)
> (/usr/local/llvm-7.0.0/lib64/libLLVMCodeGen.so.7+0x1a4a40)
> #8 0x00007fceaf3756d1
> llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
> (/usr/local/llvm-7.0.0/lib64/libLLVMCodeGen.so.7+0x2026d1)
> #9 0x00007fceac5d7697 llvm::FPPassManager::runOnFunction(llvm::Function&)
> (/usr/local/llvm-7.0.0/lib64/libLLVMCore.so.7+0x180697)
> #10 0x00007fceac5d7883 llvm::FPPassManager::runOnModule(llvm::Module&)
> (/usr/local/llvm-7.0.0/lib64/libLLVMCore.so.7+0x180883)
> #11 0x00007fceac5d7f60 llvm::legacy::PassManagerImpl::run(llvm::Module&)
> (/usr/local/llvm-7.0.0/lib64/libLLVMCore.so.7+0x180f60)
> #12 0x00007fceadba649a clang::EmitBackendOutput(clang::DiagnosticsEngine&,
> clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
> clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout
> const&, llvm::Module*, clang::BackendAction,
> std::unique_ptr<llvm::raw_pwrite_stream,
> std::default_delete<llvm::raw_pwrite_stream> >)
> (/usr/local/llvm-7.0.0/lib64/libclangCodeGen.so.7+0xbf49a)
> #13 0x00007fceaddbd6c4
> clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
> (/usr/local/llvm-7.0.0/lib64/libclangCodeGen.so.7+0x2d66c4)
> #14 0x00007fcea6382679 clang::ParseAST(clang::Sema&, bool, bool)
> (/usr/local/llvm-7.0.0/lib64/libclangParse.so.7+0x2f679)
> #15 0x00007fceaddbca81 clang::CodeGenAction::ExecuteAction()
> (/usr/local/llvm-7.0.0/lib64/libclangCodeGen.so.7+0x2d5a81)
> #16 0x00007fcead4a4a36 clang::FrontendAction::Execute()
> (/usr/local/llvm-7.0.0/lib64/libclangFrontend.so.7+0xc2a36)
> #17 0x00007fcead4648d6
> clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
> (/usr/local/llvm-7.0.0/lib64/libclangFrontend.so.7+0x828d6)
> #18 0x00007fcead1df509
> clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
> (/usr/local/llvm-7.0.0/lib64/libclangFrontendTool.so.7+0x4509)
> #19 0x00000000004124b8 cc1_main(llvm::ArrayRef<char const*>, char const*,
> void*) (/usr/local/llvm-7.0.0/bin/clang-7+0x4124b8)
> #20 0x000000000040dfe1 main (/usr/local/llvm-7.0.0/bin/clang-7+0x40dfe1)
> #21 0x00007fcea89e4725 __libc_start_main (/lib64/libc.so.6+0x20725)
> #22 0x000000000040fbd9 _start
> /home/abuild/rpmbuild/BUILD/glibc-2.22/csu/../sysdeps/x86_64/start.S:121:0
> clang-7: error: unable to execute command: Segmentation fault (core dumped)
> clang-7: error: clang frontend command failed due to signal (use -v to see
> invocation)
> clang version 7.0.0 (tags/RELEASE_700/rc2 340514)
> Target: x86_64-unknown-linux-gnu
> Thread model: posix
> InstalledDir: /usr/local/llvm-7.0.0/bin
> clang-7: note: diagnostic msg: PLEASE submit a bug report to
> https://bugs.llvm.org/ and include the crash backtrace, preprocessed source,
> and associated run script.
> clang-7: note: diagnostic msg:
> ********************
>
> PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
> Preprocessed source(s) and associated run script(s) are located at:
> clang-7: note: diagnostic msg: /tmp/mat_mult_block_ikj-548141.c
> clang-7: note: diagnostic msg: /tmp/mat_mult_block_ikj-548141.sh
> clang-7: note: diagnostic msg:
>
> ********************
> loki introduction 113
>
>
> Hopefully somebody can fix the problem. Do you need anything else to locate
> the error? Thank you very much for any help in advance.
>
>
> Kind regards
>
> Siegmar
>
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