diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index f6318e2acf2..67ba6e7675a 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,13 @@
+2017-04-21  Mark Wielaard  <mark@klomp.org>
+
+	* cp-demangle.h (struct d_info): Remove did_subs field.
+	* cp-demangle.c (struct d_info_checkpoint): Likewise.
+	(d_template_param): Don't update did_subs.
+	(d_substitution): Likewise.
+	(d_checkpoint): Don't assign did_subs.
+	(d_backtrack): Likewise.
+	(cplus_demangle_init_info): Don't initialize did_subs.
+
 2017-03-27  Pedro Alves  <palves@redhat.com>
 
 	* cp-demint.c (cplus_demangle_fill_component): Handle
diff --git a/libiberty/cp-demangle.c b/libiberty/cp-demangle.c
index 04832ff6830..2c7d5c5faab 100644
--- a/libiberty/cp-demangle.c
+++ b/libiberty/cp-demangle.c
@@ -316,7 +316,6 @@ struct d_info_checkpoint
   const char *n;
   int next_comp;
   int next_sub;
-  int did_subs;
   int expansion;
 };
 
@@ -3075,8 +3074,6 @@ d_template_param (struct d_info *di)
   if (param < 0)
     return NULL;
 
-  ++di->did_subs;
-
   return d_make_template_param (di, param);
 }
 
@@ -3846,8 +3843,6 @@ d_substitution (struct d_info *di, int prefix)
       if (id >= (unsigned int) di->next_sub)
 	return NULL;
 
-      ++di->did_subs;
-
       return di->subs[id];
     }
   else
@@ -3912,7 +3907,6 @@ d_checkpoint (struct d_info *di, struct d_info_checkpoint *checkpoint)
   checkpoint->n = di->n;
   checkpoint->next_comp = di->next_comp;
   checkpoint->next_sub = di->next_sub;
-  checkpoint->did_subs = di->did_subs;
   checkpoint->expansion = di->expansion;
 }
 
@@ -3922,7 +3916,6 @@ d_backtrack (struct d_info *di, struct d_info_checkpoint *checkpoint)
   di->n = checkpoint->n;
   di->next_comp = checkpoint->next_comp;
   di->next_sub = checkpoint->next_sub;
-  di->did_subs = checkpoint->did_subs;
   di->expansion = checkpoint->expansion;
 }
 
@@ -6159,7 +6152,6 @@ cplus_demangle_init_info (const char *mangled, int options, size_t len,
      chars in the mangled string.  */
   di->num_subs = len;
   di->next_sub = 0;
-  di->did_subs = 0;
 
   di->last_name = NULL;
 
diff --git a/libiberty/cp-demangle.h b/libiberty/cp-demangle.h
index a2657755f11..d4a4ab604d8 100644
--- a/libiberty/cp-demangle.h
+++ b/libiberty/cp-demangle.h
@@ -111,10 +111,6 @@ struct d_info
   int next_sub;
   /* The number of available entries in the subs array.  */
   int num_subs;
-  /* The number of substitutions which we actually made from the subs
-     array, plus the number of template parameter references we
-     saw.  */
-  int did_subs;
   /* The last name we saw, for constructors and destructors.  */
   struct demangle_component *last_name;
   /* A running total of the length of large expansions from the