Hi!
On Tue, 19 Jan 2016 08:47:02 -0500, Nathan Sidwell <nat...@acm.org> wrote:
> On 01/19/16 06:49, Thomas Schwinge wrote:
> > int axis = get_oacc_ifn_dim_arg (call);
> > + if (axis == GOMP_DIM_WORKER)
> > + {
> > + /* libgomp's nvptx plugin might potentially modify
> > + dims[GOMP_DIM_WORKER]. */
> > + return NULL_TREE;
> > + }
>
> this is almost certainly wrong. You're preventing constant folding in the
> compiler.
Yes, because if libgomp can modify dims[GOMP_DIM_WORKER], in the compiler
we can no assume it to be constant? (Did result in a run-time test
verification failure.) Of course, my hammer might be a too big one
(which is why this is a RFC).
Grüße
Thomas
