[Bug tree-optimization/43436] Missed vectorization: "unhandled data-ref"

[spop at gcc dot gnu dot org]

------- Comment #4 from spop at gcc dot gnu dot org  2010-03-28 16:28 -------
What about fixing the diagnostic message like this:

diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index 37ae9b5..44248b3 100644
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -1866,10 +1866,21 @@ vect_analyze_data_refs (loop_vec_info loop_vinfo,
bb_vec_info bb_vinfo)

   if (loop_vinfo)
     {
+      bool res;
+
       loop = LOOP_VINFO_LOOP (loop_vinfo);
-      compute_data_dependences_for_loop (loop, true,
-                                         &LOOP_VINFO_DATAREFS (loop_vinfo),
-                                         &LOOP_VINFO_DDRS (loop_vinfo));
+      res = compute_data_dependences_for_loop
+       (loop, true, &LOOP_VINFO_DATAREFS (loop_vinfo),
+        &LOOP_VINFO_DDRS (loop_vinfo));
+
+      if (!res)
+        {
+          if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+           fprintf (vect_dump, "not vectorized: loop contains function calls"
+                    " or data references that cannot be analyzed");
+          return false;
+        }
+
       datarefs = LOOP_VINFO_DATAREFS (loop_vinfo);
     }
   else


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43436