On Tue, Nov 8, 2011 at 6:31 AM, Daniel Fischer
<daniel.is.fischer@googlemail.com> wrote:
> On the haskell-cafe as well as the beginners mailing lists, there
> frequently (for some value of frequent) are posts where the author inquires
> about a badly performing programme, in the form of stack overflows, space
> leaks or slowness.
>
> Often this is because they compiled their programme without optimisations,
> simply recompiling with -O or -O2 yields a decently performing programme.
>
> So I wonder, should ghc compile with -O1 by default?
> What would be the downsides?

I think this is an excellent idea. Even better -O2.

FWIW gcc defaults to -O0.