Open
Description
source:
int simple_test(void *ctx)
{
int tmp = 0;
__sync_fetch_and_sub(&tmp, 1);
return tmp;
}with cmdline:
clang -c test.c -target bpfcompile output:
fatal error: error in backend: Cannot select: 0x6bbed8: i64,ch = AtomicLoadSub<(load store seq_cst (s32) on %ir.3)> 0x6bbe70, FrameIndex:i64<1>, Constant:i64<1>
0x6bbac8: i64 = FrameIndex<1>
0x6bbc68: i64 = Constant<1>
In function: simple_test
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: clang -c test.c -target bpf
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'test.c'.
4. Running pass 'BPF DAG->DAG Pattern Instruction Selection' on function '@simple_test'
#0 0x00007fde2f743d01 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xe3fd01)
#1 0x00007fde2f741a3e llvm::sys::RunSignalHandlers() (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xe3da3e)
#2 0x00007fde2f7430ab llvm::sys::CleanupOnSignal(unsigned long) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xe3f0ab)
#3 0x00007fde2f66fbea (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xd6bbea)
#4 0x00007fde2f66fb8b (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xd6bb8b)
#5 0x00007fde2f73e007 llvm::sys::Process::Exit(int, bool) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xe3a007)
#6 0x00000000004136d2 (/usr/lib/llvm-14/bin/clang+0x4136d2)
#7 0x00007fde2f67e673 llvm::report_fatal_error(llvm::Twine const&, bool) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xd7a673)
#8 0x00007fde2ff64e61 (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0x1660e61)
#9 0x00007fde2ff64308 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0x1660308)
#10 0x00007fde318690ed (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0x2f650ed)
#11 0x00007fde2ff5ceff llvm::SelectionDAGISel::DoInstructionSelection() (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0x1658eff)
#12 0x00007fde2ff5c5c4 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0x16585c4)
#13 0x00007fde2ff5b9f8 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0x16579f8)
#14 0x00007fde2ff59587 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0x1655587)
#15 0x00007fde2faca2be llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0x11c62be)
#16 0x00007fde2f87e3c0 llvm::FPPassManager::runOnFunction(llvm::Function&) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xf7a3c0)
#17 0x00007fde2f8859b3 llvm::FPPassManager::runOnModule(llvm::Module&) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xf819b3)
#18 0x00007fde2f87ef66 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xf7af66)
#19 0x00007fde36a2d201 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x1857201)
#20 0x00007fde36d52855 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x1b7c855)
#21 0x00007fde35bda834 clang::ParseAST(clang::Sema&, bool, bool) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0xa04834)
#22 0x00007fde36d4eb71 clang::CodeGenAction::ExecuteAction() (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x1b78b71)
#23 0x00007fde376eab57 clang::FrontendAction::Execute() (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x2514b57)
#24 0x00007fde376423a6 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x246c3a6)
#25 0x00007fde3776445b clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x258e45b)
#26 0x000000000041328b cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/lib/llvm-14/bin/clang+0x41328b)
#27 0x00000000004114bc (/usr/lib/llvm-14/bin/clang+0x4114bc)
#28 0x00007fde372c0ed2 (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x20eaed2)
#29 0x00007fde2f66fb6d llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/lib/x86_64-linux-gnu/libLLVM-14.so.1+0xd6bb6d)
#30 0x00007fde372c09c0 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x20ea9c0)
#31 0x00007fde3728b183 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x20b5183)
#32 0x00007fde3728b40a clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x20b540a)
#33 0x00007fde372a5507 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) (/lib/x86_64-linux-gnu/libclang-cpp.so.14+0x20cf507)
#34 0x0000000000410f26 main (/usr/lib/llvm-14/bin/clang+0x410f26)
#35 0x00007fde2e3d2d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#36 0x00007fde2e3d2e40 call_init ./csu/../csu/libc-start.c:128:20
#37 0x00007fde2e3d2e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#38 0x000000000040e3b5 _start (/usr/lib/llvm-14/bin/clang+0x40e3b5)
clang: error: clang frontend command failed with exit code 70 (use -v to see invocation)
Ubuntu clang version 14.0.0-1ubuntu1
Target: bpf
Thread model: posix
InstalledDir: /usr/bin
clang: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/test-cd2fd7.c
clang: note: diagnostic msg: /tmp/test-cd2fd7.sh
clang: note: diagnostic msg:
********************