Move enum tls_model to coretypes.h

Move enum tls_model to coretypes.h

[Zack Weinberg]

SYMBOL_REF_TLS_MODEL (in rtl.h) returns a value of type enum
tls_model, which is defined in tree.h.  So any file that uses
SYMBOL_REF_TLS_MODEL needs to include tree.h even if it has no
other reason to do so.

This doesn't come up very often (never in CVS; I found it while
working on something else), but enum tls_model is small and unlikely
to change often, so a reasonable fix is to move it to coretypes.h.

zw

        * tree.h (enum tls_model): Move ...
        * coretypes.h: ... here.

===================================================================
Index: coretypes.h
--- coretypes.h	28 Jan 2003 23:26:22 -0000	1.4
+++ coretypes.h	28 Jul 2004 23:35:10 -0000
@@ -50,6 +50,16 @@ typedef union tree_node *tree;
 
 struct cpp_reader;
 
+/* The thread-local storage model associated with a given VAR_DECL
+   or SYMBOL_REF.  This isn't used much, but both trees and RTL refer
+   to it, so it's here.  */
+enum tls_model {
+  TLS_MODEL_GLOBAL_DYNAMIC = 1,
+  TLS_MODEL_LOCAL_DYNAMIC,
+  TLS_MODEL_INITIAL_EXEC,
+  TLS_MODEL_LOCAL_EXEC
+};
+
 #else
 
 struct _dont_use_rtx_here_;
===================================================================
Index: tree.h
--- tree.h	26 Jul 2004 16:28:51 -0000	1.576
+++ tree.h	28 Jul 2004 23:35:10 -0000
@@ -2571,13 +2571,6 @@ extern GTY(()) tree integer_types[itk_no
 \f
 /* Set to the default thread-local storage (tls) model to use.  */
 
-enum tls_model {
-  TLS_MODEL_GLOBAL_DYNAMIC = 1,
-  TLS_MODEL_LOCAL_DYNAMIC,
-  TLS_MODEL_INITIAL_EXEC,
-  TLS_MODEL_LOCAL_EXEC
-};
-
 extern enum tls_model flag_tls_default;
 
 \f