PATCH: Add ObjC/ObjC++-specific field to lang_type structs

[Ziemowit Laski <zlaski at apple dot com>]

As I reported in

   http://gcc.gnu.org/ml/gcc/2004-12/msg00274.html

this patch produces at most a 0.5% compile-time regression, and does not
usually lead to a PCH size increase at all.  So, this patch meets 
Geoff's
criteria and I'll check it in.

--Zem

[gcc/ChangeLog]
2004-12-06  Ziemowit Laski  <zlaski@apple.com>

        * c-tree.h (struct lang_type): Add 'objc_protocols' field.

[gcc/cp/ChangeLog]
2004-12-06  Ziemowit Laski  <zlaski@apple.com>

        * cp-tree.h (struct lang_type_class): Add 'objc_protocols' 
field.


Index: gcc/c-tree.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-tree.h,v
retrieving revision 1.187
diff -u -3 -p -r1.187 c-tree.h
--- gcc/c-tree.h        11 Nov 2004 23:13:10 -0000      1.187
+++ gcc/c-tree.h        7 Dec 2004 03:50:23 -0000
@@ -73,6 +73,9 @@ struct lang_type GTY(())
   /* In an ENUMERAL_TYPE, the min and max values.  */
   tree enum_min;
   tree enum_max;
+  /* In a RECORD_TYPE, a list of Objective-C protocols that this type
+     adopts.  This is used only in Objective-C.  */
+  tree objc_protocols;
 };

 /* Record whether a type or decl was written with nonconstant size.
Index: gcc/cp/cp-tree.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/cp/cp-tree.h,v
retrieving revision 1.1077
diff -u -3 -p -r1.1077 cp-tree.h
--- gcc/cp/cp-tree.h    29 Nov 2004 20:10:07 -0000      1.1077
+++ gcc/cp/cp-tree.h    7 Dec 2004 03:50:25 -0000
@@ -1062,6 +1062,9 @@ struct lang_type_class GTY(())
   tree decl_list;
   tree template_info;
   tree befriending_classes;
+  /* In a RECORD_TYPE, a list of Objective-C protocols that this type
+     adopts.  This is used only in Objective-C++.  */
+  tree objc_protocols;
 };

 struct lang_type_ptrmem GTY(())