[patch] enabling vectorization by default at -O3

[Diego Novillo]

On 9/14/07, Mark Mitchell <mark@codesourcery.com> wrote:

> >> IMO, the biggest gain is the stability it will bring to the vectorizer
> >> and the incentive to keep tuning the cost model.
>
> Turning on a feature that will affect users should be about the users --
> not providing us incentives to do things. :-)

Exactly.  Tuning cost models and vectorizer stability *is* about
users.  Though perhaps in a more indirect fashion ;)