[llvm-dev] LLD issue on a massively parallel build machine

Itaru Kitayama via llvm-dev llvm-dev at lists.llvm.org
Sat Mar 28 12:57:57 PDT 2020


That is slowing down the build visibly, for the speed I should stick with
ld at the moment.


On Sun, Mar 29, 2020 at 4:42 AM Alexandre Ganea <alexandre.ganea at ubisoft.com>
wrote:

> Would `taskset -c 0-3 ninja check-all -j4` work?
>
>
>
> *De :* Itaru Kitayama <itaru.kitayama at gmail.com>
> *Envoyé :* March 28, 2020 3:37 PM
> *À :* Alex Brachet-Mialot <alexbrachetmialot at gmail.com>
> *Cc :* Alexandre Ganea <alexandre.ganea at ubisoft.com>; LLVM Dev <
> llvm-dev at lists.llvm.org>; Nemanja Ivanovic <nemanja.i.ibm at gmail.com>
> *Objet :* Re: [llvm-dev] LLD issue on a massively parallel build machine
>
>
>
> $ free -g
>               total        used        free      shared  buff/cache
> available
> Mem:            376         149          20           1         207
>   225
> Swap:             3           0           3
>
>
>
> Too small swap size for a 72-core login machine?
>
>
>
> On Sun, Mar 29, 2020 at 4:28 AM Alex Brachet-Mialot <
> alexbrachetmialot at gmail.com> wrote:
>
> Enable threads is for building llvm with or without thread support. To my
> knowledge it has no effect on the build system.
>
>
>
> Like was discussed above you could try limiting  the number of processes
> created (assuming your lld was after that commit) with numactl or taskset.
>
>
>
> In your case though it looked like you were running out of memory. You
> could try increasing your swap space?
>
>
>
> Alex
>
>
>
> On Sat, Mar 28, 2020 at 3:15 PM Itaru Kitayama <itaru.kitayama at gmail.com>
> wrote:
>
> Hi,
>
> My configuration is below:
>
> cmake -GNinja -DLLVM_ENABLE_LLD=ON -DLLVM_ENABLE_THREADS=OFF
> -DLLVM_ENABLE_LIBCXX=ON -DCMAKE_BUILD_TYPE=Release
> -DGCC_INSTALL_PREFIX=/home/usr4/c74014i/opt/gcc-7.5.0/
> -DLIBOMPTARGET_ENABLE_DEBUG=ON
> -DCMAKE_INSTALL_PREFIX=$HOME/opt/clang/${today} -DCMAKE_C_COMPILER=clang
> -DCMAKE_C_FLAGS="" -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_CXX_FLAGS=""
> -DLLVM_ENABLE_PROJECTS="clang;openmp;lld;libcxx;libcxxabi;compiler-rt;libunwind"
> -DCLANG_OPENMP_NVPTX_DEFAULT_ARCH=sm_60
> -DLIBOMPTARGET_NVPTX_COMPUTE_CAPABILITIES=60 -DLLVM_TARGETS_TO_BUILD="all"
> /tmp/llvm-project/llvm
>
>
>
> but did not help my case:
>
>
>
> [...]
>
> [4802/5201] Linking CXX executable bin/lld
> FAILED: bin/lld
> : && /home/usr4/c74014i/opt/clang/current/bin/clang++  -stdlib=libc++
> -fPIC -fvisibility-inlines-hidden -Werror=date-time
> -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter
> -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic
> -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default
> -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor
> -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections
> -O3 -DNDEBUG  -stdlib=libc++ -fuse-ld=lld -Wl,--color-diagnostics
> -Wl,-allow-shlib-undefined   -Wl,--export-dynamic  -Wl,-O3
> tools/lld/tools/lld/CMakeFiles/lld.dir/lld.cpp.o  -o bin/lld
>  -Wl,-rpath,"\$ORIGIN/../lib"  lib/libLLVMSupport.a  -lpthread
>  lib/liblldCommon.a  lib/liblldCOFF.a  lib/liblldDriver.a  lib/liblldELF.a
>  lib/liblldMinGW.a  lib/liblldWasm.a  lib/liblldMachO.a
>  lib/liblldReaderWriter.a  lib/liblldYAML.a  lib/liblldCore.a
>  lib/liblldCOFF.a  lib/libLLVMDebugInfoPDB.a  lib/libLLVMLibDriver.a
>  lib/libLLVMWindowsManifest.a  /usr/lib64/libxml2.so  lib/liblldCommon.a
>  lib/libLLVMOption.a  lib/libLLVMAArch64CodeGen.a
>  lib/libLLVMAArch64AsmParser.a  lib/libLLVMAArch64Disassembler.a
>  lib/libLLVMAArch64Desc.a  lib/libLLVMAArch64Info.a
>  lib/libLLVMAArch64Utils.a  lib/libLLVMAMDGPUCodeGen.a
>  lib/libLLVMMIRParser.a  lib/libLLVMAMDGPUAsmParser.a
>  lib/libLLVMAMDGPUDisassembler.a  lib/libLLVMAMDGPUDesc.a
>  lib/libLLVMAMDGPUInfo.a  lib/libLLVMAMDGPUUtils.a  lib/libLLVMARMCodeGen.a
>  lib/libLLVMARMAsmParser.a  lib/libLLVMARMDisassembler.a
>  lib/libLLVMARMDesc.a  lib/libLLVMARMInfo.a  lib/libLLVMARMUtils.a
>  lib/libLLVMAVRCodeGen.a  lib/libLLVMAVRAsmParser.a  lib/libLLVMAVRDesc.a
>  lib/libLLVMAVRDisassembler.a  lib/libLLVMAVRInfo.a
>  lib/libLLVMBPFCodeGen.a  lib/libLLVMBPFAsmParser.a  lib/libLLVMBPFDesc.a
>  lib/libLLVMBPFDisassembler.a  lib/libLLVMBPFInfo.a
>  lib/libLLVMHexagonCodeGen.a  lib/libLLVMHexagonAsmParser.a
>  lib/libLLVMHexagonDisassembler.a  lib/libLLVMHexagonDesc.a
>  lib/libLLVMHexagonInfo.a  lib/libLLVMLanaiCodeGen.a
>  lib/libLLVMLanaiAsmParser.a  lib/libLLVMLanaiDisassembler.a
>  lib/libLLVMLanaiDesc.a  lib/libLLVMLanaiInfo.a  lib/libLLVMMipsCodeGen.a
>  lib/libLLVMMipsAsmParser.a  lib/libLLVMMipsDesc.a
>  lib/libLLVMMipsDisassembler.a  lib/libLLVMMipsInfo.a
>  lib/libLLVMMSP430CodeGen.a  lib/libLLVMMSP430AsmParser.a
>  lib/libLLVMMSP430Desc.a  lib/libLLVMMSP430Disassembler.a
>  lib/libLLVMMSP430Info.a  lib/libLLVMNVPTXCodeGen.a  lib/libLLVMNVPTXDesc.a
>  lib/libLLVMNVPTXInfo.a  lib/libLLVMPowerPCCodeGen.a
>  lib/libLLVMPowerPCAsmParser.a  lib/libLLVMPowerPCDesc.a
>  lib/libLLVMPowerPCDisassembler.a  lib/libLLVMPowerPCInfo.a
>  lib/libLLVMRISCVCodeGen.a  lib/libLLVMRISCVAsmParser.a
>  lib/libLLVMRISCVDesc.a  lib/libLLVMRISCVDisassembler.a
>  lib/libLLVMRISCVInfo.a  lib/libLLVMRISCVUtils.a  lib/libLLVMSparcCodeGen.a
>  lib/libLLVMSparcAsmParser.a  lib/libLLVMSparcDesc.a
>  lib/libLLVMSparcDisassembler.a  lib/libLLVMSparcInfo.a
>  lib/libLLVMSystemZCodeGen.a  lib/libLLVMSystemZAsmParser.a
>  lib/libLLVMSystemZDisassembler.a  lib/libLLVMSystemZDesc.a
>  lib/libLLVMSystemZInfo.a  lib/libLLVMWebAssemblyCodeGen.a
>  lib/libLLVMWebAssemblyAsmParser.a  lib/libLLVMWebAssemblyDisassembler.a
>  lib/libLLVMWebAssemblyDesc.a  lib/libLLVMWebAssemblyInfo.a
>  lib/libLLVMX86CodeGen.a  lib/libLLVMCFGuard.a  lib/libLLVMGlobalISel.a
>  lib/libLLVMX86AsmParser.a  lib/libLLVMX86Desc.a
>  lib/libLLVMX86Disassembler.a  lib/libLLVMX86Info.a  lib/libLLVMX86Utils.a
>  lib/libLLVMXCoreCodeGen.a  lib/libLLVMAsmPrinter.a
>  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMSelectionDAG.a
>  lib/libLLVMXCoreDesc.a  lib/libLLVMXCoreDisassembler.a
>  lib/libLLVMMCDisassembler.a  lib/libLLVMXCoreInfo.a  lib/libLLVMLTO.a
>  lib/libLLVMObjCARCOpts.a  lib/libLLVMPasses.a  lib/libLLVMCodeGen.a
>  lib/libLLVMTarget.a  lib/libLLVMCoroutines.a  lib/libLLVMipo.a
>  lib/libLLVMBitWriter.a  lib/libLLVMScalarOpts.a  lib/libLLVMVectorize.a
>  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a
>  lib/libLLVMLinker.a  lib/libLLVMFrontendOpenMP.a  lib/libLLVMIRReader.a
>  lib/libLLVMAsmParser.a  lib/libLLVMInstrumentation.a
>  lib/libLLVMTransformUtils.a  lib/libLLVMAnalysis.a  lib/libLLVMObject.a
>  lib/libLLVMBitReader.a  lib/libLLVMMCParser.a  lib/libLLVMMC.a
>  lib/libLLVMDebugInfoCodeView.a  lib/libLLVMDebugInfoMSF.a
>  lib/libLLVMTextAPI.a  lib/libLLVMProfileData.a  lib/libLLVMCore.a
>  lib/libLLVMBinaryFormat.a  lib/libLLVMRemarks.a
>  lib/libLLVMBitstreamReader.a  lib/libLLVMSupport.a  -lz  -lrt  -ldl
>  -ltinfo  -lpthread  -lm  lib/libLLVMDemangle.a && cd
> /tmp/build/202003290405/tools/lld/tools/lld &&
> /home/usr4/c74014i/opt/cmake-3.16.3-Linux-x86_64/bin/cmake -E
> create_symlink lld /tmp/build/202003290405/./bin/lld-link && cd
> /tmp/build/202003290405/tools/lld/tools/lld &&
> /home/usr4/c74014i/opt/cmake-3.16.3-Linux-x86_64/bin/cmake -E
> create_symlink lld /tmp/build/202003290405/./bin/ld.lld && cd
> /tmp/build/202003290405/tools/lld/tools/lld &&
> /home/usr4/c74014i/opt/cmake-3.16.3-Linux-x86_64/bin/cmake -E
> create_symlink lld /tmp/build/202003290405/./bin/ld64.lld && cd
> /tmp/build/202003290405/tools/lld/tools/lld &&
> /home/usr4/c74014i/opt/cmake-3.16.3-Linux-x86_64/bin/cmake -E
> create_symlink lld /tmp/build/202003290405/./bin/wasm-ld
> terminating with uncaught exception of type std::__1::system_error: thread
> constructor failed: Resource temporarily unavailable
> PLEASE submit a bug report to https://bugs.llvm.org/ and include the
> crash backtrace.
>  #0 0x00000000007924f4 PrintStackTraceSignalHandler(void*)
> (/home/usr4/c74014i/opt/clang/current/bin/ld.lld+0x7924f4)
>  #1 0x00000000007902ce llvm::sys::RunSignalHandlers()
> (/home/usr4/c74014i/opt/clang/current/bin/ld.lld+0x7902ce)
>  #2 0x0000000000792bd5 SignalHandler(int)
> (/home/usr4/c74014i/opt/clang/current/bin/ld.lld+0x792bd5)
>  #3 0x00007fddd54bb630 __restore_rt (/lib64/libpthread.so.0+0xf630)
>  #4 0x00007fddd3b40377 raise
> /usr/src/debug/glibc-2.17-c758a686/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:55:0
>  #5 0x00007fddd3b41a68 abort
> /usr/src/debug/glibc-2.17-c758a686/stdlib/abort.c:92:0
>  #6 0x00007fddd411ae8b
> (/home/usr4/c74014i/opt/clang/202003290200/bin/../lib/libc++abi.so.1+0x2be8b)
>  #7 0x00007fddd40fdb9f demangling_terminate_handler()
> (/home/usr4/c74014i/opt/clang/202003290200/bin/../lib/libc++abi.so.1+0xeb9f)
>  #8 0x00007fddd411a0a3 std::__terminate(void (*)())
> (/home/usr4/c74014i/opt/clang/202003290200/bin/../lib/libc++abi.so.1+0x2b0a3)
>  #9 0x00007fddd411ce06
> (/home/usr4/c74014i/opt/clang/202003290200/bin/../lib/libc++abi.so.1+0x2de06)
> #10 0x00007fddd411cd9f
> (/home/usr4/c74014i/opt/clang/202003290200/bin/../lib/libc++abi.so.1+0x2dd9f)
> #11 0x00007fddd43bded4 std::__1::__throw_system_error(int, char const*)
> (/home/usr4/c74014i/opt/clang/202003290200/bin/../lib/libc++.so.1+0x90ed4)
> #12 0x0000000002a7a316 void*
> std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct,
> std::__1::default_delete<std::__1::__thread_struct> >,
> llvm::parallel::detail::(anonymous
> namespace)::ThreadPoolExecutor::ThreadPoolExecutor(llvm::ThreadPoolStrategy)::'lambda'()>
> >(void*) (/home/usr4/c74014i/opt/clang/current/bin/ld.lld+0x2a7a316)
> #13 0x00007fddd54b3ea5 start_thread
> /usr/src/debug/glibc-2.17-c758a686/nptl/pthread_create.c:307:0
> #14 0x00007fddd3c088cd clone
> /usr/src/debug////////glibc-2.17-c758a686/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:113:0
> clang-11: error: unable to execute command: Aborted
> clang-11: error: linker command failed due to signal (use -v to see
> invocation)
>
>
>
> On Sun, Mar 29, 2020 at 1:44 AM Nemanja Ivanovic <nemanja.i.ibm at gmail.com>
> wrote:
>
> The discussion in https://reviews.llvm.org/D76240
>
> may be of interest to the participants of this thread. Specifically,
> Fangrui's planned work on a command line option to limit threads for LLD.
> Until that becomes a reality, you might want to use the CMake variable
> -DLLVM_ENABLE_THREADS=OFF when building the LLD that you are using to
> prevent parallelism.
>
>
>
> On Sat, Mar 28, 2020 at 12:32 PM Alexandre Ganea via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
> Alex :
>
> Can you please try `numactl` or `taskset` after
> https://github.com/llvm/llvm-project/commit/09158252f777c2e2f06a86b154c44abcbcf9bb74
> ?
>
>
>
> There was a tiny bug in how *sched_getaffinity*() was used, see:
> https://reviews.llvm.org/D75153#1942336
>
>
>
> *De :* Alex Brachet-Mialot <alexbrachetmialot at gmail.com>
> *Envoyé :* March 28, 2020 12:11 PM
> *À :* Itaru Kitayama <itaru.kitayama at gmail.com>
> *Cc :* LLVM Dev <llvm-dev at lists.llvm.org>; Alexandre Ganea <
> alexandre.ganea at ubisoft.com>; Fāng-ruì Sòng <maskray at google.com>
> *Objet :* Re: [llvm-dev] LLD issue on a massively parallel build machine
>
>
>
> I also run into problems with lld on machines with lots of cores (208),
> but I run into rlimits for number of processes I can create, something
> outside of my control.
>
>
>
> Unfortunately things like numactl or taskset do not limit the
> concurrency of lld currently.
>
>
>
> On Sat, Mar 28, 2020 at 4:10 AM Itaru Kitayama via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
> Hi,
>
> On a 1296-core Intel machine with 376 GB, setting
>
>
>
> -DLLVM_PARALLEL_LINK_JOB=1
>
>
>
> does not help (switching back to ld scales) see:
>
>
>
> [5085/5201] Linking CXX executable bin/clang-11
> FAILED: bin/clang-11
> : && /home/usr4/c74014i/opt/clang/current/bin/clang++  -stdlib=libc++
> -fPIC -fvisibility-inlines-hidden -Werror=date-time
> -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter
> -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic
> -Wno-long-long -Wimplicit-fallthrough -Wcovered-switch-default
> -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor
> -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections
> -fno-common -Woverloaded-virtual -Wno-nested-anon-types -O3 -DNDEBUG
>  -stdlib=libc++ -fuse-ld=lld -Wl,--color-diagnostics
> -Wl,-allow-shlib-undefined   -Wl,--export-dynamic  -Wl,-O3
> tools/clang/tools/driver/CMakeFiles/clang.dir/driver.cpp.o
> tools/clang/tools/driver/CMakeFiles/clang.dir/cc1_main.cpp.o
> tools/clang/tools/driver/CMakeFiles/clang.dir/cc1as_main.cpp.o
> tools/clang/tools/driver/CMakeFiles/clang.dir/cc1gen_reproducer_main.cpp.o
>  -o bin/clang-11  -Wl,-rpath,"\$ORIGIN/../lib"  lib/libLLVMAArch64CodeGen.a
>  lib/libLLVMAArch64AsmParser.a  lib/libLLVMAArch64Desc.a
>  lib/libLLVMAArch64Disassembler.a  lib/libLLVMAArch64Info.a
>  lib/libLLVMAArch64Utils.a  lib/libLLVMAMDGPUCodeGen.a
>  lib/libLLVMAMDGPUAsmParser.a  lib/libLLVMAMDGPUDesc.a
>  lib/libLLVMAMDGPUDisassembler.a  lib/libLLVMAMDGPUInfo.a
>  lib/libLLVMAMDGPUUtils.a  lib/libLLVMARMCodeGen.a
>  lib/libLLVMARMAsmParser.a  lib/libLLVMARMDesc.a
>  lib/libLLVMARMDisassembler.a  lib/libLLVMARMInfo.a  lib/libLLVMARMUtils.a
>  lib/libLLVMAVRCodeGen.a  lib/libLLVMAVRAsmParser.a  lib/libLLVMAVRDesc.a
>  lib/libLLVMAVRDisassembler.a  lib/libLLVMAVRInfo.a
>  lib/libLLVMBPFCodeGen.a  lib/libLLVMBPFAsmParser.a  lib/libLLVMBPFDesc.a
>  lib/libLLVMBPFDisassembler.a  lib/libLLVMBPFInfo.a
>  lib/libLLVMHexagonCodeGen.a  lib/libLLVMHexagonAsmParser.a
>  lib/libLLVMHexagonDesc.a  lib/libLLVMHexagonDisassembler.a
>  lib/libLLVMHexagonInfo.a  lib/libLLVMLanaiCodeGen.a
>  lib/libLLVMLanaiAsmParser.a  lib/libLLVMLanaiDesc.a
>  lib/libLLVMLanaiDisassembler.a  lib/libLLVMLanaiInfo.a
>  lib/libLLVMMipsCodeGen.a  lib/libLLVMMipsAsmParser.a
>  lib/libLLVMMipsDesc.a  lib/libLLVMMipsDisassembler.a
>  lib/libLLVMMipsInfo.a  lib/libLLVMMSP430CodeGen.a
>  lib/libLLVMMSP430AsmParser.a  lib/libLLVMMSP430Desc.a
>  lib/libLLVMMSP430Disassembler.a  lib/libLLVMMSP430Info.a
>  lib/libLLVMNVPTXCodeGen.a  lib/libLLVMNVPTXDesc.a  lib/libLLVMNVPTXInfo.a
>  lib/libLLVMPowerPCCodeGen.a  lib/libLLVMPowerPCAsmParser.a
>  lib/libLLVMPowerPCDesc.a  lib/libLLVMPowerPCDisassembler.a
>  lib/libLLVMPowerPCInfo.a  lib/libLLVMRISCVCodeGen.a
>  lib/libLLVMRISCVAsmParser.a  lib/libLLVMRISCVDesc.a
>  lib/libLLVMRISCVDisassembler.a  lib/libLLVMRISCVInfo.a
>  lib/libLLVMRISCVUtils.a  lib/libLLVMSparcCodeGen.a
>  lib/libLLVMSparcAsmParser.a  lib/libLLVMSparcDesc.a
>  lib/libLLVMSparcDisassembler.a  lib/libLLVMSparcInfo.a
>  lib/libLLVMSystemZCodeGen.a  lib/libLLVMSystemZAsmParser.a
>  lib/libLLVMSystemZDesc.a  lib/libLLVMSystemZDisassembler.a
>  lib/libLLVMSystemZInfo.a  lib/libLLVMWebAssemblyCodeGen.a
>  lib/libLLVMWebAssemblyAsmParser.a  lib/libLLVMWebAssemblyDesc.a
>  lib/libLLVMWebAssemblyDisassembler.a  lib/libLLVMWebAssemblyInfo.a
>  lib/libLLVMX86CodeGen.a  lib/libLLVMX86AsmParser.a  lib/libLLVMX86Desc.a
>  lib/libLLVMX86Disassembler.a  lib/libLLVMX86Info.a  lib/libLLVMX86Utils.a
>  lib/libLLVMXCoreCodeGen.a  lib/libLLVMXCoreDesc.a
>  lib/libLLVMXCoreDisassembler.a  lib/libLLVMXCoreInfo.a
>  lib/libLLVMAnalysis.a  lib/libLLVMCodeGen.a  lib/libLLVMCore.a
>  lib/libLLVMipo.a  lib/libLLVMAggressiveInstCombine.a
>  lib/libLLVMInstCombine.a  lib/libLLVMInstrumentation.a  lib/libLLVMMC.a
>  lib/libLLVMMCParser.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMOption.a
>  lib/libLLVMScalarOpts.a  lib/libLLVMSupport.a  lib/libLLVMTransformUtils.a
>  lib/libLLVMVectorize.a  -lpthread  lib/libclangBasic.a
>  lib/libclangCodeGen.a  lib/libclangDriver.a  lib/libclangFrontend.a
>  lib/libclangFrontendTool.a  lib/libclangSerialization.a
>  lib/libLLVMAArch64Desc.a  lib/libLLVMAArch64Info.a
>  lib/libLLVMAArch64Utils.a  lib/libLLVMMIRParser.a  lib/libLLVMAMDGPUDesc.a
>  lib/libLLVMAMDGPUInfo.a  lib/libLLVMAMDGPUUtils.a  lib/libLLVMARMDesc.a
>  lib/libLLVMARMInfo.a  lib/libLLVMARMUtils.a  lib/libLLVMHexagonDesc.a
>  lib/libLLVMHexagonInfo.a  lib/libLLVMLanaiDesc.a  lib/libLLVMLanaiInfo.a
>  lib/libLLVMSystemZDesc.a  lib/libLLVMSystemZInfo.a
>  lib/libLLVMWebAssemblyDesc.a  lib/libLLVMWebAssemblyInfo.a
>  lib/libLLVMCFGuard.a  lib/libLLVMGlobalISel.a  lib/libLLVMAsmPrinter.a
>  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMSelectionDAG.a
>  lib/libLLVMMCDisassembler.a  lib/libclangCodeGen.a  lib/libLLVMCoverage.a
>  lib/libLLVMLTO.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMPasses.a
>  lib/libLLVMCodeGen.a  lib/libLLVMTarget.a  lib/libLLVMCoroutines.a
>  lib/libLLVMipo.a  lib/libLLVMInstrumentation.a  lib/libLLVMVectorize.a
>  lib/libLLVMBitWriter.a  lib/libLLVMIRReader.a  lib/libLLVMAsmParser.a
>  lib/libLLVMLinker.a  lib/libLLVMScalarOpts.a
>  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a
>  lib/libclangRewriteFrontend.a  lib/libclangARCMigrate.a
>  lib/libclangStaticAnalyzerFrontend.a  lib/libclangStaticAnalyzerCheckers.a
>  lib/libclangStaticAnalyzerCore.a  lib/libclangCrossTU.a
>  lib/libclangIndex.a  lib/libclangFrontend.a  lib/libclangDriver.a
>  lib/libLLVMOption.a  lib/libclangParse.a  lib/libclangSerialization.a
>  lib/libclangSema.a  lib/libclangAnalysis.a  lib/libclangASTMatchers.a
>  lib/libclangEdit.a  lib/libclangFormat.a  lib/libclangToolingInclusions.a
>  lib/libclangToolingCore.a  lib/libclangAST.a  lib/libLLVMFrontendOpenMP.a
>  lib/libLLVMTransformUtils.a  lib/libLLVMAnalysis.a
>  lib/libLLVMProfileData.a  lib/libLLVMObject.a  lib/libLLVMMCParser.a
>  lib/libLLVMBitReader.a  lib/libLLVMTextAPI.a  lib/libclangRewrite.a
>  lib/libclangLex.a  lib/libclangBasic.a  lib/libLLVMCore.a
>  lib/libLLVMRemarks.a  lib/libLLVMBitstreamReader.a  lib/libLLVMMC.a
>  lib/libLLVMBinaryFormat.a  lib/libLLVMDebugInfoCodeView.a
>  lib/libLLVMDebugInfoMSF.a  lib/libLLVMSupport.a  -lz  -lrt  -ldl  -ltinfo
>  -lpthread  -lm  lib/libLLVMDemangle.a && :
> ld.lld: error: failed to open bin/clang-11: Cannot allocate memory
>
> _______________________________________________
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> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
> _______________________________________________
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>
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