tree.c (find_decls_types_r): Walk also TYPE_NEXT_PTR_TO and TYPE_NEXT_REF_TO.

	* tree.c (find_decls_types_r): Walk also TYPE_NEXT_PTR_TO
	and TYPE_NEXT_REF_TO.

From-SVN: r263978

gcc/ChangeLog

+2018-08-29  Jan Hubicka  <jh@suse.cz>
+
+	* tree.c (find_decls_types_r): Walk also TYPE_NEXT_PTR_TO
+	and TYPE_NEXT_REF_TO.
+
+2018-08-29  Jan Hubicka  <jh@suse.cz>
+
+	* sreal.h (SREAL_PART_BITS): Change to 31; remove seemingly unnecessary
+	comment that it has to be even number.
+	(class sreal): Change m_sig type to int32_t.
+	* sreal.c (sreal::dump, sreal::to_int, opreator+, operator-): Use
+	int64_t for temporary calculations.
+	(sreal_verify_basics): Drop one bit from minimum and maximum.
+
 2018-08-30  Tamar Christina  <tamar.christina@arm.com>
 
 	* config/aarch64/aarch64.c (aarch64_expand_movmem): Set TImode max.

gcc/tree.c

@@ -5519,9 +5519,14 @@ find_decls_types_r (tree *tp, int *ws, void *data)
       fld_worklist_push (TYPE_POINTER_TO (t), fld);
       fld_worklist_push (TYPE_REFERENCE_TO (t), fld);
       fld_worklist_push (TYPE_NAME (t), fld);
-      /* Do not walk TYPE_NEXT_PTR_TO or TYPE_NEXT_REF_TO.  We do not stream
-	 them and thus do not and want not to reach unused pointer types
-	 this way.  */
+      /* While we do not stream TYPE_POINTER_TO and TYPE_REFERENCE_TO
+	 lists, we may look types up in these lists and use them while
+	 optimizing the function body.  Thus we need to free lang data
+	 in them.  */
+      if (TREE_CODE (t) == POINTER_TYPE)
+        fld_worklist_push (TYPE_NEXT_PTR_TO (t), fld);
+      if (TREE_CODE (t) == REFERENCE_TYPE)
+        fld_worklist_push (TYPE_NEXT_REF_TO (t), fld);
       if (!POINTER_TYPE_P (t))
 	fld_worklist_push (TYPE_MIN_VALUE_RAW (t), fld);
       /* TYPE_MAX_VALUE_RAW is TYPE_BINFO for record types.  */