--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr86076.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,26 @@
+/* { dg-do compile { target pthread } }  */
+/* { dg-options "-O2 -ftree-parallelize-loops=2 -fno-tree-dce -fno-tree-pre -fno-tree-vrp --param max-loop-header-insns=1" } */
+
+int __attribute__ ((noinline))
+lv (int tm)
+{
+  (void) tm;
+
+  return 0;
+}
+
+void
+o7 (int uu)
+{
+  while (uu < 1)
+    while (uu != 0)
+      {
+	short int ca;
+
+	ca = lv (0);
+	(void) ca;
+	++uu;
+      }
+
+  lv (lv (0));
+}