Helping out the Vectorizer

[Daniel Berlin]

On 8/14/07, Gordan Bobic <gordan@bobich.net> wrote:
> Hi,
>
> I'm trying to get more of my code to vectorize, but very few of the loops
> do. ICC (sorry for mentioning it, don't mean to offend anyone) manages to
> vectorize all of the loops in my code, so it is doable (and succeeding
> seems to yield a speed-up of 5-10x!).
>
> Is there a way to help out the vectorizer with pragmas and suchlike, to
> resolve possible misperceived vector dependence issues?
>

For starters, it would help to tell us which version of GCC you are trying with.
Second, your code doesn't compile as you've written it, so i can't
diagnose more without you fixing it :)
Third, even with some modifications to make it compile, your class
isn't used, so we wouldn't bother to compile it.

Without a complete, working, example, I can't help more.