X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=isl_tab_pip.c;h=9663979a4ba4e7b570ce52b4b478a33800c062d6;hb=b35a6a202fe8bd218af5152420e1dabeb79f10d4;hp=f131ccf4754fa71ccf0289aae4ca78368c4a0427;hpb=5ee2cb71bd59bf8f86be6cbfbccced1aa6ae47a0;p=platform%2Fupstream%2Fisl.git

diff --git a/isl_tab_pip.c b/isl_tab_pip.c
index f131ccf..9663979 100644
--- a/isl_tab_pip.c
+++ b/isl_tab_pip.c
@@ -102,6 +102,8 @@ struct isl_context_op {
 	void *(*save)(struct isl_context *context);
 	/* restore saved context */
 	void (*restore)(struct isl_context *context, void *);
+	/* discard saved context */
+	void (*discard)(void *);
 	/* invalidate context */
 	void (*invalidate)(struct isl_context *context);
 	/* free context */
@@ -307,6 +309,8 @@ static void sol_pop(struct isl_sol *sol)
 			struct isl_basic_set *bset;
 
 			bset = sol_domain(sol);
+			if (!bset)
+				goto error;
 
 			isl_basic_set_free(partial->next->dom);
 			partial->next->dom = bset;
@@ -319,6 +323,9 @@ static void sol_pop(struct isl_sol *sol)
 		}
 	} else
 		sol_pop_one(sol);
+
+	if (0)
+error:		sol->error = 1;
 }
 
 static void sol_dec_level(struct isl_sol *sol)
@@ -2418,6 +2425,10 @@ static void context_lex_restore(struct isl_context *context, void *save)
 	}
 }
 
+static void context_lex_discard(void *save)
+{
+}
+
 static int context_lex_is_ok(struct isl_context *context)
 {
 	struct isl_context_lex *clex = (struct isl_context_lex *)context;
@@ -2537,6 +2548,7 @@ struct isl_context_op isl_context_lex_op = {
 	context_lex_is_ok,
 	context_lex_save,
 	context_lex_restore,
+	context_lex_discard,
 	context_lex_invalidate,
 	context_lex_free,
 };
@@ -3225,6 +3237,12 @@ error:
 	cgbr->tab = NULL;
 }
 
+static void context_gbr_discard(void *save)
+{
+	struct isl_gbr_tab_undo *snap = (struct isl_gbr_tab_undo *)save;
+	free(snap);
+}
+
 static int context_gbr_is_ok(struct isl_context *context)
 {
 	struct isl_context_gbr *cgbr = (struct isl_context_gbr *)context;
@@ -3263,6 +3281,7 @@ struct isl_context_op isl_context_gbr_op = {
 	context_gbr_is_ok,
 	context_gbr_save,
 	context_gbr_restore,
+	context_gbr_discard,
 	context_gbr_invalidate,
 	context_gbr_free,
 };
@@ -3561,6 +3580,8 @@ static void find_in_pos(struct isl_sol *sol, struct isl_tab *tab, isl_int *ineq)
 
 	if (!sol->error)
 		sol->context->op->restore(sol->context, saved);
+	else
+		sol->context->op->discard(saved);
 	return;
 error:
 	sol->error = 1;
@@ -4763,11 +4784,13 @@ int isl_basic_map_foreach_lexopt(__isl_keep isl_basic_map *bmap, int max,
 	struct isl_sol_for *sol_for = NULL;
 
 	bmap = isl_basic_map_copy(bmap);
+	bmap = isl_basic_map_detect_equalities(bmap);
 	if (!bmap)
 		return -1;
 
-	bmap = isl_basic_map_detect_equalities(bmap);
 	sol_for = sol_for_init(bmap, max, fn, user);
+	if (!sol_for)
+		goto error;
 
 	if (isl_basic_map_plain_is_empty(bmap))
 		/* nothing */;