3 ms·

What about I64.min_value() / (-1)? Why does that give 0? If you're doing wrap-around arithmetic it should give I64.min_value(). https://tio.run/##K8jPq/z/PzG5J

• spooneybarger 8y ago
  That might be an LLVM bug. `I64.max_value() + 1` gives the expected result. I'm going to have to look into that. Thanks.
  • simonbyrne 8y ago
    Apologies, I realise my comment was a bit snarky. Pony looks like a really neat language: I'll be interested to see what you do with it. Unfortunately LLVM considers division overflow undefined: http://llvm.org/docs/LangRef.html#id109 http://llvm.org/docs/LangRef.html#id109 If it's any use, you can see what Julia ended up doing here: https://github.com/JuliaLang/julia/issues/8188 https://github.com/JuliaLang/julia/issues/8188
    • spooneybarger 8y ago
      I didn't take it as snarky. I was genuinely surprised. Thank you. If you intended it to be snarky, I didn't notice. And thank you for the additional info, I've updated the issue I opened accordingly: https://github.com/ponylang/ponyc/issues/2858 https://github.com/ponylang/ponyc/issues/2858