--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ifc-pr47271.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,49 @@
+/* { dg-options "-O3" } */
+/* { dg-do run } */
+
+extern void abort (void);
+
+void func (void)
+{
+  int i;
+  int nops;
+  char *codestr =
+    "|\000\000Ee\000\000Z\001\000d\000\000Z\002\000d\025\000Z\003\000"
+    "\t\t\t\t\t\t\t\t\t\t\t\td\026\000Z\004\000d\005\000\204\000\000Z"
+    "\005\000e\006\000e\a\000j\005\000e\b\000d\006\000\204\002\000\203"
+    "\001\000Z\t\000d\a\000\204\000\000Z\n\000d\b\000\204\000\000Z\v\000d"
+    "\t\000\204\000\000Z\f\000d\n\000\204\000\000Z\r\000e\016\000e\017\000d"
+    "\v\000\203\001\000d\f\000d\r\000\203\001\001Z\020\000e\016\000e\017"
+    "\000d\016\000\203\001\000d\f\000d\017\000\203\001\001Z\021\000e\016"
+    "\000e\017\000d\020\000\203\001\000d\f\000d\021\000\203\001\001Z\022"
+    "\000e\016\000e\017\000d\022\000\203\001\000d\f\000d\023\000\203\001"
+    "\001Z\023\000d\024\000S";
+  int codelen = 209;
+  int addrmap[500];
+
+  for (i=0, nops=0 ; i<codelen ; i += ((codestr[i] >= 90) ? 3 : 1))
+    {
+      addrmap[i] = i - nops;
+      if (codestr[i] == 9)
+	nops++;
+    }
+
+  if (addrmap[0] != 0
+      || addrmap[3] != 3
+      || addrmap[4] != 4
+      || addrmap[7] != 7
+      || addrmap[10] != 10
+      || addrmap[13] != 13
+      || addrmap[16] != 16
+      || addrmap[19] != 19
+      || addrmap[22] != 22
+      || addrmap[23] != 22
+      || addrmap[24] != 22)
+    abort ();
+}
+
+int main ()
+{
+  func ();
+  return 0;
+}