crash: Assertion failed: (Bits != 0 && "Cannot print this instruction."), function printInstruction, file RISCVGenAsmWriter.inc

Snippet:

; Function Attrs: sspreq
define void @func() #0 {
  ret void
}

attributes #0 = { sspreq }

Compiler Explorer panes:

Reproduce:

llc -mtriple=riscv64-linux -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64-linux -global-isel=0 snippet.ll -o -

Local llc output:

llc: /home/runner/work/llvm-fuzz/llvm-fuzz/llvm-project/build/lib/Target/RISCV/RISCVGenAsmWriter.inc:53883: void llvm::RISCVInstPrinter::printInstruction(const MCInst *, uint64_t, const MCSubtargetInfo &, raw_ostream &): Assertion `Bits != 0 && "Cannot print this instruction."' failed.
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.	Program arguments: /home/runner/work/llvm-fuzz/llvm-fuzz/llvm-project/build/bin/llc -mtriple=riscv64-linux -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* -o -
1.	Running pass 'Function Pass Manager' on module '<stdin>'.
2.	Running pass 'RISC-V Assembly Printer' on function '@func'
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  llc       0x0000563bf4b3a54b llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 43
1  llc       0x0000563bf4b373f1 llvm::sys::RunSignalHandlers() + 369
2  llc       0x0000563bf4b3afcb
3  libc.so.6 0x00007f7cd5445330
4  libc.so.6 0x00007f7cd549ec0c pthread_kill + 284
5  libc.so.6 0x00007f7cd544527e gsignal + 30
6  libc.so.6 0x00007f7cd54288ff abort + 223
7  libc.so.6 0x00007f7cd542881b
8  libc.so.6 0x00007f7cd543b517
9  llc       0x0000563bf58f0e9e
10 llc       0x0000563bf58f31e9
11 llc       0x0000563bf4b57895 llvm::MCTargetStreamer::prettyPrintAsm(llvm::MCInstPrinter&, unsigned long, llvm::MCInst const&, llvm::MCSubtargetInfo const&, llvm::raw_ostream&) + 37
12 llc       0x0000563bf4bcd2cc
13 llc       0x0000563bf5deddda
14 llc       0x0000563bf5dfc197 llvm::AsmPrinter::emitFunctionBody() + 4855
15 llc       0x0000563bf5de8be7
16 llc       0x0000563bf51019ed llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 653
17 llc       0x0000563bf4e91d37 llvm::FPPassManager::runOnFunction(llvm::Function&) + 871
18 llc       0x0000563bf4e9a232 llvm::FPPassManager::runOnModule(llvm::Module&) + 50
19 llc       0x0000563bf4e92ae0 llvm::legacy::PassManagerImpl::run(llvm::Module&) + 2000
20 llc       0x0000563bf4b41ba8 llcMain + 12056
21 llc       0x0000563bf4a7c6af main + 63
22 libc.so.6 0x00007f7cd542a1ca
23 libc.so.6 0x00007f7cd542a28b __libc_start_main + 139
24 llc       0x0000563bf4a7c5a5 _start + 37

Occurrences (7):

Generated 2026-10-15 08:05 UTC.