Re: [Haskell-cafe] Re: Code and Perf. Data for Prime Finders (was: Genuine Eratosthenes sieve)

Neil Mitchell wrote:

-O3 is slower than -O2 and -O in ghc? If you want "fast code" then specify -O2, not -O3.

Oops. That ought to have been -O2. But from what I can tell, -O3 is harmless (at least in this case). Both invocations generate identical executables, at least for these examples on my machine. Melissa.