--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/torture/pr84830.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,46 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-fno-tree-ch -fno-tree-vrp" } */
+
+int x0;
+
+void
+br (int yp, int oo)
+{
+  int *qi = &yp;
+
+  if (oo == 0)
+    {
+g8:
+      if (x0 != 0)
+	x0 = yp;
+      else if (oo != 0)
+	x0 = yp;
+
+      if (x0 == 0)
+	{
+	  *qi = 0;
+	  x0 = *qi;
+	}
+
+      if (x0 != 0)
+	{
+	  ++oo;
+	  goto g8;
+	}
+
+      if (yp == oo)
+	yp += !!oo;
+    }
+  else
+    {
+      x0 = 1;
+      while (x0 < 2)
+	{
+	  qi = &oo;
+	  ++oo;
+	  x0 = 1;
+	}
+    }
+
+  goto g8;
+}