tree.c (new_alias_set): New function.

        * tree.c (new_alias_set): New function.
        * tree.h (new_alias_set): Declare it.
        * c-common.c (c_get_alias_set): Use it.

From-SVN: r22504

gcc/ChangeLog

+Sun Sep 20 19:01:51 1998  Richard Henderson  <rth@cygnus.com>
+
+        * tree.c (new_alias_set): New function.
+        * tree.h (new_alias_set): Declare it.
+        * c-common.c (c_get_alias_set): Use it.
+
 Sun Sep 20 12:35:55 1998  Richard Henderson  <rth@cygnus.com>
 
 	* fold-const.c (fold): Yet another COND_EXPR bug: when folding 

gcc/c-common.c

@@ -2984,7 +2984,6 @@ int
 c_get_alias_set (t)
      tree t;
 {
-  static int next_set = 0;
   tree type;
 
   if (t == error_mark_node)
@@ -3060,6 +3059,6 @@ c_get_alias_set (t)
 
   /* TYPE is something we haven't seen before.  Put it in a new alias
      set.  */
-  TYPE_ALIAS_SET (type) = ++next_set;
+  TYPE_ALIAS_SET (type) = new_alias_set ();
   return TYPE_ALIAS_SET (type);
 }

gcc/tree.c

@@ -5061,7 +5061,8 @@ expr_check (node, ignored, file, line, nofatal)
 /* Return the alias set for T, which may be either a type or an
    expression.  */
 
-int get_alias_set (t)
+int
+get_alias_set (t)
      tree t;
 {
   if (!flag_strict_aliasing || !lang_get_alias_set)
@@ -5071,3 +5072,12 @@ int get_alias_set (t)
   else
     return (*lang_get_alias_set) (t);
 }
+
+/* Return a brand-new alias set.  */
+
+int
+new_alias_set ()
+{
+  static int last_alias_set;
+  return ++last_alias_set;
+}

gcc/tree.h

@@ -1865,6 +1865,7 @@ extern tree get_set_constructor_bits		PROTO((tree, char *, int));
 extern tree get_set_constructor_bytes		PROTO((tree,
 						       unsigned char *, int));
 extern int get_alias_set                        PROTO((tree));
+extern int new_alias_set			PROTO((void));
 extern int (*lang_get_alias_set)                PROTO((tree));
 
 /* In stmt.c */