Mirror of forum.nim-lang.org

1372 :: Compilation Speed

• Falbatron (orginal) [2015-06-26T18:40:32+02:00] view original

  Hello,

  Firstly, I want to praise the team that is developing Nim. I have tried various modern languages and I am always coming back to Nim. The combination of speed, understandability and fast prototyping is exactly answering to my needs. There are parts in this language that are complex and that I don't master at all, but my overall experience with Nim is so intuitive that it is like I know already this language. That's awesome.

  Now, I have a question. For my hobby project, I wrote a program that generates source codes and compiles them, a lot of them. Right now, on my main computer, a source code compiles in 0.35 seconds without any parameters. When I use -d:release the compilation time decreases between 0.267 to 0.303 seconds.

  I was wondering if there are other compilation parameters or tricks that can decrease the compilation time even lower?

---

• Demos (orginal) [2015-06-26T19:06:41+02:00] view original

  You should check how much time is due to the nim compiler and how much is the C compiler. What does the source code do? Can you use a faster C compiler (clang tends to be quick apparently)?

---

• def (orginal) [2015-06-26T19:10:56+02:00] view original

  TCC is much faster as a C compiler, with slower code of course. Clang is still a good bit faster than GCC, so --cc:clang. If you recompile the same files rather often, keeping the nimcaches in separate directories might help. You could disable all checks, linetraces, debugger, linedir, enable deadcodeelim, but not enable --opt:speed for faster compilation as well.

---