LLVM-DIS(1)

📦
version 21.1.8 · 8 versions
, in fedora 44

💅 LLVM-DIS(1) — like, the LLVM manual page, bestie

okay so this is the llvm-dis page from the LLVM manual set, and honestly? it's a little icon and you're about to find out why. sit down, grab a strawberry 🍓, let's go.

✨ NAME ✨

llvm-dis — the LLVM disassembler. that's it, that's the whole name. short, sweet, main character energy 👑

🦋 SYNOPSIS 🦋

llvm-dis [options] [filename]

literally that simple. options, maybe a filename, we move. 💅

🌸 DESCRIPTION 🌸

so llvm-dis is the LLVM disassembler. what does that mean? it takes an LLVM bitcode file and converts it into human-readable LLVM assembly language. like, bitcode → you-can-actually-read-it. it's giving translator, it's giving glow-up, it's giving "let me make this make sense for you" 🫶

if filename is omitted, or if you specify it as -, then llvm-dis reads its input from standard input. yes, - means stdin, classic, we know her. 🙈

now here's the part where the output goes, and it's lowkey the most interesting bit:

  • if the input is being read from standard input, then llvm-dis will send its output to standard output by default. no thinking required, she just does it.
  • otherwise, the output gets written to a file named after the input file, with a .ll suffix added — and any existing .bc suffix gets removed first. so your thing.bc becomes thing.ll. the .bc? gone. not invited. 💀

and if you're not feeling the default file name situation, you can override the whole choice of output file using the -o option. your file, your rules, periodt. ✨

🎀 OPTIONS 🎀

  • -f — enable binary output on terminals 🔥 normally llvm-dis will refuse to write raw bitcode output if the output stream is a terminal (honestly? fair, that would be chaos on your screen 😭). with this option, llvm-dis will write raw bitcode regardless of the output device. no cap.
  • -help — print a summary of command line options. the "help me help you" flag, we love a self-aware icon 💖
  • -o filename — specify the output file name. and if filename is -, then the output is sent to standard output. dash means stdout, dash means stdin, dash is the moment, dash ate 💅

⭐ EXIT STATUS ⭐

  • if llvm-dis succeeds, it will exit with 0. slay. 🎉
  • otherwise, if an error occurs, it will exit with a non-zero value. not slay. 😭

🌈 SEE ALSO 🌈

  • llvm-as(1) <llvm-as.html> — the other half of the duo, the assembler to this disassembler, the matching set bestie 🦋

👑 Author 👑

maintained by the LLVM Team (https://llvm.org/). they're the ones keeping this whole thing alive, show some respect 🫶

2003-2026, LLVM Project — a whole era, honestly, iconic run 🌟

bestie reminder: everything above is exactly what the page says, just with the vibes turned all the way up. use it well, and may all your .bc files become beautiful .ll files ✨🧚

LLVM 21 · dated 2026-05-15 · that's the tea, drink responsibly 🍓💅

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