| Issue |
127224
|
| Summary |
[flang] Crash in backend with ieee_other rounding mode
|
| Labels |
bug,
flang
|
| Assignees |
|
| Reporter |
ashermancinelli
|
```
> cat t.f90
use ieee_arithmetic
call ieee_set_rounding_mode(ieee_other)
end
```
```
> nvfortran t.f90 -O2
> gfortran t.f90 -O2
> ngflang t.f90
> ngflang t.f90 -O1
rounding mode is not supported by X86 hardware
UNREACHABLE executed at
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.
1. Code generation
2. Running pass 'Function Pass Manager' on module 't.f90.ll'.
3. Running pass 'X86 DAG->DAG Instruction Selection' on function '@_QQmain'
#0 0x0000564d0116c83b llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (
#1 0x0000564d0116a37c llvm::sys::CleanupOnSignal(unsigned long) (
#2 0x0000564d010afe98 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007f0b58a3e730 __restore_rt (/lib64/libc.so.6+0x3e730)
#4 0x00007f0b58a8ba6c __pthread_kill_implementation (/lib64/libc.so.6+0x8ba6c)
#5 0x00007f0b58a3e686 gsignal (/lib64/libc.so.6+0x3e686)
#6 0x00007f0b58a28833 abort (/lib64/libc.so.6+0x28833)
#7 0x0000564d010b9f9a (
#8 0x0000564cffbfacef llvm::X86TargetLowering::LowerSET_ROUNDING(llvm::SDValue, llvm::SelectionDAG&) const X86ISelLowering.cpp:0:0
#9 0x0000564cffcf8949 llvm::X86TargetLowering::LowerOperation(llvm::SDValue, llvm::SelectionDAG&) const X86ISelLowering.cpp:0:0
#10 0x0000564d02775be0 (anonymous namespace)::SelectionDAGLegalize::LegalizeOp(llvm::SDNode*) (.part.0) LegalizeDAG.cpp:0:0
#11 0x0000564d02779926 llvm::SelectionDAG::Legalize() (
#12 0x0000564d02876b6e llvm::SelectionDAGISel::CodeGenAndEmitDAG() (
#13 0x0000564d0287a2b5 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (
#14 0x0000564d0287b578 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (
#15 0x0000564d0286b7af llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (
#16 0x0000564d00433ea2 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#17 0x0000564d00b1ca1f llvm::FPPassManager::runOnFunction(llvm::Function&) (
#18 0x0000564d00b1cde1 llvm::FPPassManager::runOnModule(llvm::Module&) (
#19 0x0000564d00b1d6e1 llvm::legacy::PassManagerImpl::run(llvm::Module&) (
#20 0x0000564d01bfbd0a clang::emitBackendOutput(clang::CompilerInstance&, clang::CodeGenOptions&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (
#21 0x0000564d01d6a237 clang::CodeGenAction::ExecuteAction() (
#22 0x0000564d02178ea5 clang::FrontendAction::Execute() (
#23 0x0000564d020f8c0e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (
#24 0x0000564d0227fd6e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (
#25 0x0000564cffa12337 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (
#26 0x0000564cffa097da ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#27 0x0000564d01ee9769 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#28 0x0000564d010b0364 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (
#29 0x0000564d01ee9d6f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#30 0x0000564d01ea7c50 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (
#31 0x0000564d01ea8cee clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (
#32 0x0000564d01eb1315 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (
#33 0x0000564cffa0eb1b clang_main(int, char**, llvm::ToolContext const&) (
#34 0x0000564cffa217b7 main (
#35 0x00007f0b58a295d0 __libc_start_call_main (/lib64/libc.so.6+0x295d0)
#36 0x00007f0b58a29680 __libc_start_main@GLIBC_2.2.5 (/lib64/libc.so.6+0x29680)
#37 0x0000564cffa0926e _start (
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
clang version 21.0.0git (https://github.com/llvm/llvm-project 083f099a345f02390d00a8196d4ffa36ae71c82f)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir:
Build config: +assertions
clang++: note: diagnostic msg: Error generating preprocessed source(s) - no preprocessable inputs.
```
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