isl_basic_map_extend_dim: move responsibility of cow'ing to the caller

[platform/upstream/isl.git] / isl_map.c

diff --git a/isl_map.c b/isl_map.c
index bb49e87..a5fdbd1 100644 (file)
--- a/isl_map.c
+++ b/isl_map.c
@@ -797,7 +797,6 @@ struct isl_basic_map *isl_basic_map_extend_dim(struct isl_basic_map *base,
        if (!dim)
                goto error;
 
-       base = isl_basic_map_cow(base);
        if (!base)
                goto error;
 
@@ -1529,6 +1528,7 @@ struct isl_basic_map *isl_basic_map_intersect_domain(
                isl_assert(bset->ctx,
                    isl_basic_map_compatible_domain(bmap, bset), goto error);
 
+       bmap = isl_basic_map_cow(bmap);
        bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
                        bset->n_div, bset->n_eq, bset->n_ineq);
        if (!bmap)
@@ -1560,6 +1560,7 @@ struct isl_basic_map *isl_basic_map_intersect_range(
                isl_assert(bset->ctx,
                    isl_basic_map_compatible_range(bmap, bset), goto error);
 
+       bmap = isl_basic_map_cow(bmap);
        bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
                        bset->n_div, bset->n_eq, bset->n_ineq);
        if (!bmap)
@@ -1638,6 +1639,7 @@ struct isl_basic_map *isl_basic_map_intersect(
            basic_map_contains(bmap2, bmap2->sample) > 0)
                sample = isl_vec_copy(bmap2->ctx, bmap2->sample);
 
+       bmap1 = isl_basic_map_cow(bmap1);
        bmap1 = isl_basic_map_extend_dim(bmap1, isl_dim_copy(bmap1->dim),
                        bmap2->n_div, bmap2->n_eq, bmap2->n_ineq);
        if (!bmap1)
@@ -3169,6 +3171,7 @@ struct isl_basic_set *isl_basic_map_deltas(struct isl_basic_map *bmap)
        nparam = isl_basic_map_n_param(bmap);
        isl_assert(bmap->ctx, dim == isl_basic_map_n_out(bmap), goto error);
        bset = isl_basic_set_from_basic_map(bmap);
+       bset = isl_basic_set_cow(bset);
        bset = isl_basic_set_extend(bset, nparam, 3*dim, 0, dim, 0);
        bset = isl_basic_set_swap_vars(bset, 2*dim);
        for (i = 0; i < dim; ++i) {
@@ -3557,6 +3560,7 @@ struct isl_basic_map *isl_basic_map_align_divs(
                isl_assert(src->ctx, !isl_int_is_zero(src->div[i][0]), goto error);
 
        src = order_divs(src);
+       dst = isl_basic_map_cow(dst);
        dst = isl_basic_map_extend_dim(dst, isl_dim_copy(dst->dim),
                        src->n_div, 0, 2 * src->n_div);
        if (!dst)
@@ -3898,6 +3902,7 @@ int isl_basic_set_compare_at(struct isl_basic_set *bset1,
        bmap2 = isl_basic_map_from_basic_set(isl_basic_set_copy(bset2), dims);
        if (!bmap1 || !bmap2)
                goto error;
+       bmap1 = isl_basic_map_cow(bmap1);
        bmap1 = isl_basic_map_extend(bmap1, nparam,
                        pos, (dim1 - pos) + (dim2 - pos),
                        bmap2->n_div, bmap2->n_eq, bmap2->n_ineq);