Extend comment for SET_TYPE to mention Chill.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@8465 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/tree.def b/gcc/tree.def
index 71d6386..1338a73 100644 (file)
--- a/gcc/tree.def
+++ b/gcc/tree.def
@@ -200,7 +200,9 @@ DEFTREECODE (FILE_TYPE, "file_type", "t", 0)
 DEFTREECODE (ARRAY_TYPE, "array_type", "t", 0)
 
 /* Types of sets for Pascal.  Special fields are the same as
-   in an array type.  The target type is always a boolean type.  */
+   in an array type.  The target type is always a boolean type.
+   Used for both bitstrings and powersets in Chill;
+   TYPE_STRING_FLAG indicates a bitstring. */
 DEFTREECODE (SET_TYPE, "set_type", "t", 0)
 
 /* Struct in C, or record in Pascal.  */