===================================================================
@@ -2214,7 +2214,8 @@ predicate_mem_writes (loop_p loop)
{
if (!gimple_assign_single_p (stmt = gsi_stmt (gsi)))
;
- else if (is_false_predicate (cond))
+ else if (is_false_predicate (cond)
+ && gimple_vdef (stmt))
{
unlink_stmt_vdef (stmt);
gsi_remove (&gsi, true);
===================================================================
@@ -0,0 +1,24 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-ftree-loop-vectorize" } */
+
+int
+mr (unsigned int lf, int ms)
+{
+ unsigned int sw = 0;
+ char *cu = (char *)&ms;
+
+ while (ms < 1)
+ {
+ if (lf == 0)
+ ms = 0;
+ else
+ ms = 0;
+ ms += ((lf > 0) && ((lf > sw) ? 1 : ++*cu));
+ }
+
+ if (lf != 0)
+ cu = (char *)&sw;
+ *cu = lf;
+
+ return ms;
+}