--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.c-torture/compile/pr83575.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,33 @@
+/* { dg-options "-O2 -funroll-loops -fno-tree-dominator-opts -fno-tree-loop-im -fno-code-hoisting -fno-tree-pre -fno-guess-branch-probability" } */
+int tw, be;
+
+void
+fp (void)
+{
+  if (tw == 0)
+    goto gq;
+  else if (be == 0)
+    goto ob;
+  else
+    return;
+
+  for (;;)
+    if (tw < 1)
+      {
+        while (tw < 1)
+          {
+ gq:
+            tw = 0;
+          }
+
+        while (be < 1)
+          {
+ ob:
+            tw = 0;
+          }
+
+        while (be < 1)
+          ++be;
+      }
+}
+