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       0x0000557c1f5f979b llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 43
1  llc       0x0000557c1f5f6641 llvm::sys::RunSignalHandlers() + 369
2  llc       0x0000557c1f5fa21b
3  libc.so.6 0x00007ff4bba45330
4  libc.so.6 0x00007ff4bba9ec0c pthread_kill + 284
5  libc.so.6 0x00007ff4bba4527e gsignal + 30
6  libc.so.6 0x00007ff4bba288ff abort + 223
7  libc.so.6 0x00007ff4bba2881b
8  libc.so.6 0x00007ff4bba3b517
9  llc       0x0000557c203af94e
10 llc       0x0000557c203b1c99
11 llc       0x0000557c1f616ae5 llvm::MCTargetStreamer::prettyPrintAsm(llvm::MCInstPrinter&, unsigned long, llvm::MCInst const&, llvm::MCSubtargetInfo const&, llvm::raw_ostream&) + 37
12 llc       0x0000557c1f68c45c
13 llc       0x0000557c208abe0a
14 llc       0x0000557c208ba1c7 llvm::AsmPrinter::emitFunctionBody() + 4855
15 llc       0x0000557c208a6c17
16 llc       0x0000557c1fbc0d2d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 653
17 llc       0x0000557c1f950cd7 llvm::FPPassManager::runOnFunction(llvm::Function&) + 871
18 llc       0x0000557c1f9591d2 llvm::FPPassManager::runOnModule(llvm::Module&) + 50
19 llc       0x0000557c1f951a80 llvm::legacy::PassManagerImpl::run(llvm::Module&) + 2000
20 llc       0x0000557c1f600df8 llcMain + 12056
21 llc       0x0000557c1f53c62f main + 63
22 libc.so.6 0x00007ff4bba2a1ca
23 libc.so.6 0x00007ff4bba2a28b __libc_start_main + 139
24 llc       0x0000557c1f53c525 _start + 37

Occurrences (6):

Generated 2026-10-15 08:05 UTC.