2 ms·

Well then at leastbwith -O0 should be similiar times achievable?

• TazeTSchnitzel 6y ago
  Modern compilers are still pass-based with an optimisation-friendly IR even if you skip the actual optimisation passes. A single-pass compiler will be faster because it does not have the overhead of doing things in multiple passes.
• Touche 6y ago
  Turbo pascal was single pass, parse and compile.
• pkaye 6y ago
  -O0 still does some optimization from what I can find online. Maybe someone knows more specifics since the manual is pretty brief.
  • guenthert 6y ago
    I can only confirm that -O0 performs some optimization, which can be annoying when single-stepping through the code (cough, cough) using a debugger. Hence gcc offers -Og to suppress those optimizations (not sure, whether that in itself causes some debugging info to be added though).