On Fri, Oct 27, 2017 at 03:19:05PM +0200, Martin Jambor wrote:
> 2017-10-10 Martin Jambor <mjam...@suse.cz>
>
> * omp-grid.c (grid_attempt_target_gridification): Also insert a
> condition whether loop should be executed at all.
Ok, thanks.
> --- a/gcc/omp-grid.c
> +++ b/gcc/omp-grid.c
> @@ -1315,6 +1315,7 @@ grid_attempt_target_gridification (gomp_target *target,
> n1 = fold_convert (itype, n1);
> n2 = fold_convert (itype, n2);
>
> + tree cond = fold_build2 (cond_code, boolean_type_node, n1, n2);
> tree step
> = omp_get_for_step_from_incr (loc, gimple_omp_for_incr (inner_loop, i));
>
> @@ -1328,6 +1329,7 @@ grid_attempt_target_gridification (gomp_target *target,
> fold_build1 (NEGATE_EXPR, itype, step));
> else
> t = fold_build2 (TRUNC_DIV_EXPR, itype, t, step);
> + t = fold_build3 (COND_EXPR, itype, cond, t, build_zero_cst (itype));
> if (grid.tiling)
> {
> if (cond_code == GT_EXPR)
> --
> 2.14.2
Jakub
