[llvm-bugs] [Bug 30542] New: Crash in InnerLoopVectorizer::vectorizeLoop

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Sep 27 10:32:04 PDT 2016 

https://llvm.org/bugs/show_bug.cgi?id=30542

            Bug ID: 30542
           Summary: Crash in InnerLoopVectorizer::vectorizeLoop
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Loop Optimizer
          Assignee: unassignedbugs at nondot.org
          Reporter: wenzel.jakob at epfl.ch
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 17366
  --> https://llvm.org/bugs/attachment.cgi?id=17366&action=edit
Gzipped preprocessed source code file

I ran into the following issue with Clang trunk (r282487) on a Xeon Phi
machine.

/usr/local/bin/clang++   -DHAVE_CONFIG_H -DILMIMF_EXPORTS
-DILM_IMF_TEST_IMAGEDIR=\"/home/wjakob/mitsuba2/IlmImfTest/\" -DIlmImf_EXPORTS
-Iext_build/openexr/OpenEXR/IlmImf -Iext/openexr/OpenEXR/IlmImf
-Iext/openexr/IlmBase/Iex -Iext/openexr/IlmBase/Imath
-Iext/openexr/IlmBase/IlmThread -Iext/openexr/IlmBase/Half
-Iext_build/openexr/IlmBase/config -Iext_build/openexr/OpenEXR/config
-Iext/openexr/OpenEXR/IlmImfUtil -Iext/openexr/OpenEXR/exrmaketiled
-Iext/openexr/OpenEXR/exrenvmap -Iext/openexr/OpenEXR/exrmakepreview
-Iext/openexr/OpenEXR/exrmultiview -Iext/openexr/OpenEXR/IlmImfFuzzTest
-Wno-switch -Wno-tautological-compare -Wno-deprecated-register -O3 -DNDEBUG
-fPIC   -march=native -stdlib=libc++ -MD -MT
ext_build/openexr/OpenEXR/IlmImf/CMakeFiles/IlmImf.dir/ImfMisc.cpp.o -MF
ext_build/openexr/OpenEXR/IlmImf/CMakeFiles/IlmImf.dir/ImfMisc.cpp.o.d -o
ext_build/openexr/OpenEXR/IlmImf/CMakeFiles/IlmImf.dir/ImfMisc.cpp.o -c
ext/openexr/OpenEXR/IlmImf/ImfMisc.cpp
#0 0x00000000010fc195 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/bin/clang-4.0+0x10fc195)
#1 0x00000000010fa0ce llvm::sys::RunSignalHandlers()
(/usr/local/bin/clang-4.0+0x10fa0ce)
#2 0x00000000010fa34a SignalHandler(int) (/usr/local/bin/clang-4.0+0x10fa34a)
#3 0x00007f4a6068f100 __restore_rt (/lib64/libpthread.so.0+0xf100)
#4 0x00000000011e611c (anonymous
namespace)::InnerLoopVectorizer::predicateInstructions()
(/usr/local/bin/clang-4.0+0x11e611c)
#5 0x00000000011fcfec (anonymous
namespace)::InnerLoopVectorizer::vectorizeLoop()
(/usr/local/bin/clang-4.0+0x11fcfec)
#6 0x00000000012038f8 llvm::LoopVectorizePass::processLoop(llvm::Loop*)
(/usr/local/bin/clang-4.0+0x12038f8)
#7 0x0000000001206455 llvm::LoopVectorizePass::runImpl(llvm::Function&,
llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&,
llvm::DominatorTree&, llvm::BlockFrequencyInfo&, llvm::TargetLibraryInfo*,
llvm::DemandedBits&, llvm::AAResults&, llvm::AssumptionCache&,
std::function<llvm::LoopAccessInfo const& (llvm::Loop&)>&,
llvm::OptimizationRemarkEmitter&) (/usr/local/bin/clang-4.0+0x1206455)
#8 0x000000000120693a (anonymous
namespace)::LoopVectorize::runOnFunction(llvm::Function&)
(/usr/local/bin/clang-4.0+0x120693a)
#9 0x0000000000d74fa9 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/bin/clang-4.0+0xd74fa9)
#10 0x0000000000d750a3 llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/local/bin/clang-4.0+0xd750a3)
#11 0x0000000000d756d3 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/bin/clang-4.0+0xd756d3)
#12 0x00000000012610b6 (anonymous
namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/local/bin/clang-4.0+0x12610b6)
#13 0x00000000012633d2 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
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/bin/clang-4.0+0x12633d2)
#14 0x000000000184a0ae
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/bin/clang-4.0+0x184a0ae)
#15 0x0000000001c77b1b clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/bin/clang-4.0+0x1c77b1b)
#16 0x000000000184d00f clang::CodeGenAction::ExecuteAction()
(/usr/local/bin/clang-4.0+0x184d00f)
#17 0x000000000158759e clang::FrontendAction::Execute()
(/usr/local/bin/clang-4.0+0x158759e)
#18 0x000000000155f0ad
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/bin/clang-4.0+0x155f0ad)
#19 0x000000000161ca81
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/bin/clang-4.0+0x161ca81)
#20 0x00000000007a2378 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/bin/clang-4.0+0x7a2378)
#21 0x000000000075cbb9 main (/usr/local/bin/clang-4.0+0x75cbb9)
#22 0x00007f4a5f1f7b15 __libc_start_main (/lib64/libc.so.6+0x21b15)
#23 0x000000000079dd51 _start (/usr/local/bin/clang-4.0+0x79dd51)
Stack dump:
0.    Program arguments: /usr/local/bin/clang-4.0 -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -disable-free -disable-llvm-verifier
-discard-value-names -main-file-name ImfMisc.cpp -mrelocation-model pic
-pic-level 2 -mthread-model posix -fmath-errno -masm-verbose
-mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu knl
-target-feature +sse2 -target-feature +cx16 -target-feature -tbm
-target-feature -avx512ifma -target-feature -avx512dq -target-feature -fma4
-target-feature +prfchw -target-feature +bmi2 -target-feature -xsavec
-target-feature +fsgsbase -target-feature +popcnt -target-feature +aes
-target-feature -pcommit -target-feature -xsaves -target-feature +avx512er
-target-feature -clwb -target-feature +avx512f -target-feature -pku
-target-feature -smap -target-feature +mmx -target-feature -xop -target-feature
+rdseed -target-feature -hle -target-feature -sse4a -target-feature -avx512bw
-target-feature -clflushopt -target-feature +xsave -target-feature -avx512vl
-target-feature -invpcid -target-feature +avx512cd -target-feature +avx
-target-feature -rtm -target-feature +fma -target-feature +bmi -target-feature
-mwaitx -target-feature +rdrnd -target-feature +sse4.1 -target-feature +sse4.2
-target-feature +avx2 -target-feature +sse -target-feature +lzcnt
-target-feature +pclmul -target-feature +prefetchwt1 -target-feature +f16c
-target-feature +ssse3 -target-feature -sgx -target-feature +cmov
-target-feature -avx512vbmi -target-feature +movbe -target-feature +xsaveopt
-target-feature -sha -target-feature +adx -target-feature +avx512pf
-target-feature +sse3 -momit-leaf-frame-pointer -dwarf-column-info
-debugger-tuning=gdb -coverage-notes-file
/home/wjakob/mitsuba2/ext_build/openexr/OpenEXR/IlmImf/CMakeFiles/IlmImf.dir/ImfMisc.cpp.gcno
-resource-dir /usr/local/bin/../lib/clang/4.0.0 -dependency-file
ext_build/openexr/OpenEXR/IlmImf/CMakeFiles/IlmImf.dir/ImfMisc.cpp.o.d
-sys-header-deps -MT
ext_build/openexr/OpenEXR/IlmImf/CMakeFiles/IlmImf.dir/ImfMisc.cpp.o -D
HAVE_CONFIG_H -D ILMIMF_EXPORTS -D
ILM_IMF_TEST_IMAGEDIR="/home/wjakob/mitsuba2/IlmImfTest/" -D IlmImf_EXPORTS -I
ext_build/openexr/OpenEXR/IlmImf -I ext/openexr/OpenEXR/IlmImf -I
ext/openexr/IlmBase/Iex -I ext/openexr/IlmBase/Imath -I
ext/openexr/IlmBase/IlmThread -I ext/openexr/IlmBase/Half -I
ext_build/openexr/IlmBase/config -I ext_build/openexr/OpenEXR/config -I
ext/openexr/OpenEXR/IlmImfUtil -I ext/openexr/OpenEXR/exrmaketiled -I
ext/openexr/OpenEXR/exrenvmap -I ext/openexr/OpenEXR/exrmakepreview -I
ext/openexr/OpenEXR/exrmultiview -I ext/openexr/OpenEXR/IlmImfFuzzTest -D
NDEBUG -I/opt/intel/compilers_and_libraries_2017.0.098/linux/ipp/include
-I/opt/intel/compilers_and_libraries_2017.0.098/linux/mkl/include
-I/opt/intel/compilers_and_libraries_2017.0.098/linux/tbb/include
-I/opt/intel/compilers_and_libraries_2017.0.098/linux/daal/include
-internal-isystem /usr/local/bin/../include/c++/v1 -internal-isystem
/usr/local/include -internal-isystem /usr/local/bin/../lib/clang/4.0.0/include
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O3
-Wno-switch -Wno-tautological-compare -Wno-deprecated-register
-fdeprecated-macro -fdebug-compilation-dir /home/wjakob/mitsuba2 -ferror-limit
19 -fmessage-length 0 -fobjc-runtime=gcc -fcxx-exceptions -fexceptions
-fdiagnostics-show-option -vectorize-loops -vectorize-slp -o
ext_build/openexr/OpenEXR/IlmImf/CMakeFiles/IlmImf.dir/ImfMisc.cpp.o -x c++
ext/openexr/OpenEXR/IlmImf/ImfMisc.cpp
1.    <eof> parser at end of file
2.    Per-module optimization passes
3.    Running pass 'Function Pass Manager' on module
'ext/openexr/OpenEXR/IlmImf/ImfMisc.cpp'.
4.    Running pass 'Loop Vectorization' on function
'@_ZN3Imf17bytesPerLineTableERKNS_6HeaderERNSt3__16vectorImNS3_9allocatorImEEEE'
clang-4.0: error: unable to execute command: Segmentation fault (core dumped)
clang-4.0: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 4.0.0 (trunk 282487)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang-4.0: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
clang-4.0: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-4.0: note: diagnostic msg: /tmp/ImfMisc-f8476c.cpp
clang-4.0: note: diagnostic msg: /tmp/ImfMisc-f8476c.sh
clang-4.0: note: diagnostic msg:

********************

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