On Wed, Jun 11, 2014 at 2:20 AM, Tyler Nowicki <[email protected]> wrote:
> Hi,
>
> Here is a patch for the loop hints documentation. I’m not exactly sure if I
> wrote the attribute documentation correctly. If I missed something please let
> me know.
> +Extensions for loop hint optimizations
> +======================================
> +
> +The ``#pragma clang loop`` directive is used to specify hints for optimizing
> the
> +subsequent for, while, do-while, or c++11 range-based for loop. The directive
> +provides options for controlling vectorization, interleaving, and unrolling.
This documentation describes syntax and the high-level effect of the
pragma, but it does not explain what are the semantic constraints on
the loop. Users would want to know when it is valid to apply the
pragma, and the documentation does not explain that.
Dmitri
--
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <[email protected]>*/
_______________________________________________
cfe-commits mailing list
[email protected]
http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits
