--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.c-torture/compile/pr82913.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,23 @@
+/* PR rtl-optimization/82913 */
+
+unsigned int a;
+unsigned long int b;
+
+int
+foo (void)
+{
+  ++a;
+  b = 0;
+}
+
+unsigned long int
+bar (int x)
+{
+  if (!foo () || !a)
+    {
+      int c = a != b;
+      if (c != x)
+        return a;
+    }
+  return 0;
+}