isl_flow.c: merge isl_restriction_none and isl_restriction_empty

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>

diff --git a/isl_flow.c b/isl_flow.c
index 3d07e32..6367a26 100644 (file)
--- a/isl_flow.c
+++ b/isl_flow.c
@@ -33,9 +33,10 @@ struct isl_restriction {
        isl_set *sink;
 };
 
-/* Create a restriction that doesn't restrict anything.
+/* Create a restriction of the given type.
  */
-__isl_give isl_restriction *isl_restriction_none(__isl_take isl_map *source_map)
+static __isl_give isl_restriction *isl_restriction_alloc(
+       __isl_take isl_map *source_map, enum isl_restriction_type type)
 {
        isl_ctx *ctx;
        isl_restriction *restr;
@@ -48,7 +49,7 @@ __isl_give isl_restriction *isl_restriction_none(__isl_take isl_map *source_map)
        if (!restr)
                goto error;
 
-       restr->type = isl_restriction_type_none;
+       restr->type = type;
 
        isl_map_free(source_map);
        return restr;
@@ -57,29 +58,19 @@ error:
        return NULL;
 }
 
+/* Create a restriction that doesn't restrict anything.
+ */
+__isl_give isl_restriction *isl_restriction_none(__isl_take isl_map *source_map)
+{
+       return isl_restriction_alloc(source_map, isl_restriction_type_none);
+}
+
 /* Create a restriction that removes everything.
  */
 __isl_give isl_restriction *isl_restriction_empty(
        __isl_take isl_map *source_map)
 {
-       isl_ctx *ctx;
-       isl_restriction *restr;
-
-       if (!source_map)
-               return NULL;
-
-       ctx = isl_map_get_ctx(source_map);
-       restr = isl_calloc_type(ctx, struct isl_restriction);
-       if (!restr)
-               goto error;
-
-       restr->type = isl_restriction_type_empty;
-
-       isl_map_free(source_map);
-       return restr;
-error:
-       isl_map_free(source_map);
-       return NULL;
+       return isl_restriction_alloc(source_map, isl_restriction_type_empty);
 }
 
 /* Create a restriction on the input of the maximization problem