LLD/LLVM 22.1.1 crashes with segmentation fault during ThinLTO linking when building LDC (D Language Compiler) on LoongArch64. The crash occurs in the LoongArch DAG->DAG Pattern Instruction Selection pass, specifically in llvm::TargetLowering::LowerCallTo.
CFLAGS="-mabi=lp64d -march=loongarch64 -mlsx -O2 -pipe -fno-plt -fexceptions -mcmodel=medium \
-Wp,-D_FORTIFY_SOURCE=3 -Wformat -Werror=format-security \
-fstack-clash-protection \
-fno-omit-frame-pointer"
CXXFLAGS="$CFLAGS -Wp,-D_GLIBCXX_ASSERTIONS"
LDFLAGS="-Wl,-O1 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now"PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
Stack dump:
0. Running pass 'Function Pass Manager' on module 'obj/timetrace2txt.o'.
1. Running pass 'LoongArch DAG->DAG Pattern Instruction Selection' on function '@_D3std6format8internal6floats__T10printFloatTSQBsQBr__T7sformatTaTxdZQoFNkMAaMAxaxdZ4SinkTdTaZQCkFNaNfKQCgxdSQEdQEc4spec__T10FormatSpecTaZQpZv'
0 libLLVM.so.22.1 0x00007fffe909ec64 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 68
1 libLLVM.so.22.1 0x00007fffe909b8a4
2 linux-vdso.so.1 0x00007ffffcd5d188 __vdso_rt_sigreturn + 0
3 libLLVM.so.22.1 0x00007fffed4db950
4 libLLVM.so.22.1 0x00007fffed4f37f0
5 libLLVM.so.22.1 0x00007fffe9dc6cdc llvm::TargetLowering::LowerCallTo(llvm::TargetLowering::CallLoweringInfo&) const + 9428
6 libLLVM.so.22.1 0x00007fffe9dd4e1c llvm::SelectionDAGBuilder::lowerInvokable(llvm::TargetLowering::CallLoweringInfo&, llvm::BasicBlock const*) + 244
7 libLLVM.so.22.1 0x00007fffe9deaa4c llvm::SelectionDAGBuilder::LowerCallTo(llvm::CallBase const&, llvm::SDValue, bool, bool, llvm::BasicBlock const*, llvm::TargetLowering::PtrAuthInfo const*) + 3620
8 libLLVM.so.22.1 0x00007fffe9e1a004 llvm::SelectionDAGBuilder::visit(llvm::Instruction const&) + 700
9 libLLVM.so.22.1 0x00007fffe9eb1438 llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, false, false, void, true, llvm::BasicBlock>, false, true>, llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, false, false, void, true, llvm::BasicBlock>, false, true>, bool&) + 340
10 libLLVM.so.22.1 0x00007fffe9eb24dc llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 4176
11 libLLVM.so.22.1 0x00007fffe9eb4330 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 228
12 libLLVM.so.22.1 0x00007fffe9ea2ca0 llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) + 448
13 libLLVM.so.22.1 0x00007fffe9728e3c llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 436
14 libLLVM.so.22.1 0x00007fffe92c7b48 llvm::FPPassManager::runOnFunction(llvm::Function&) + 1508
15 libLLVM.so.22.1 0x00007fffe92c7d34 llvm::FPPassManager::runOnModule(llvm::Module&) + 80
16 libLLVM.so.22.1 0x00007fffe92c73f0 llvm::legacy::PassManagerImpl::run(llvm::Module&) + 2020
17 libLLVM.so.22.1 0x00007fffeb6eb4e8
18 libLLVM.so.22.1 0x00007fffeb6ec5fc
19 libLLVM.so.22.1 0x00007fffeb6ed134 llvm::lto::thinBackend(llvm::lto::Config const&, unsigned int, std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int, llvm::Twine const&)>, llvm::Module&, llvm::ModuleSummaryIndex const&, llvm::FunctionImporter::ImportMapTy const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, llvm::SmallVector<std::pair<llvm::StringRef, llvm::BitcodeModule>, 0u>>*, bool, std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int, llvm::Twine const&)>, std::vector<unsigned char, std::allocator<unsigned char>> const&) + 2380
20 libLLVM.so.22.1 0x00007fffeb6c1abc
21 libLLVM.so.22.1 0x00007fffeb6dbd78
22 libLLVM.so.22.1 0x00007fffeb6cac74
23 libLLVM.so.22.1 0x00007fffe8f08a04
24 libLLVM.so.22.1 0x00007fffe8f08868
25 libc.so.6 0x00007fffe7faa4bc
26 libc.so.6 0x00007fffe7faa5a8 pthread_once + 68
27 libLLVM.so.22.1 0x00007fffe8f08584
28 libLLVM.so.22.1 0x00007fffe8f082dc
29 libLLVM.so.22.1 0x00007fffe8fff788 llvm::StdThreadPool::processTasks(llvm::ThreadPoolTaskGroup*) + 508
30 libLLVM.so.22.1 0x00007fffe9000580
31 libc.so.6 0x00007fffe7fa33a4
32 libc.so.6 0x00007fffe8024e18
collect2: fatal error: ld terminated with signal 11 [Segmentation fault], core dumped
Currently, the build can complete by using LLD/LLVM 21 instead of LLD22/LLVM 22.
Description
LLD/LLVM 22.1.1 crashes with segmentation fault during ThinLTO linking when building LDC (D Language Compiler) on LoongArch64. The crash occurs in the
LoongArch DAG->DAG Pattern Instruction Selectionpass, specifically inllvm::TargetLowering::LowerCallTo.Environment
Steps to Reproduce
https://github.com/ldc-developers/ldc#commit=3d5bafdf0e6f0d4619f04baad80d2b8afb6ba8adninjatimetrace2txtexecutableStack Dump
Full Backtrace:
Workarounds
Currently, the build can complete by using LLD/LLVM 21 instead of LLD22/LLVM 22.