[PATCH] move some debug routines from final.c to dbxout.c

[Nathan Froyd <froydnj at codesourcery dot com>]

I was looking at debug_flush_symbol_queue and thought "gosh, it's
inefficient if we're calling this all the time, but it only does work
when we want DBX_DEBUGGING_INFO."  So I looked around and saw that
debug_flush_symbol_queue and friends are only called from dbxout.c.  So
this patch moves them there; any inefficiency can be cleaned up at a
later point in time. ;)

Tested on x86_64-unknown-linux-gnu; verified that DBX_DEBUGGING_INFO is
defined and therefore dbxout.c gets compile-checked.  OK to commit?

-Nathan

	* debug.h (debug_flush_symbol_queue, debug_queue_symbol): Delete.
	(debug_free_queue, debug_nesting, symbol_queue_index): Delete.
	* final.c (debug_flush_symbol_queue, debug_queue_symbol):
	Move these...
	(debug_free_queue, debug_nesting, symbol_queue_index):
	...and these...
	* dbxout.c: ...to here.  Make static.

diff --git a/gcc/dbxout.c b/gcc/dbxout.c
index 89d52a1..5ed9b69 100644
--- a/gcc/dbxout.c
+++ b/gcc/dbxout.c
@@ -96,6 +96,20 @@ along with GCC; see the file COPYING3.  If not see
 #include "xcoffout.h"
 #endif
 
+/* When -gused is used, emit debug info for only used symbols. But in
+   addition to the standard intercepted debug_hooks there are some
+   direct calls into this file, i.e., dbxout_symbol, dbxout_parms, and
+   dbxout_reg_params.  Those routines may also be called from a higher
+   level intercepted routine. So to prevent recording data for an inner
+   call to one of these for an intercept, we maintain an intercept
+   nesting counter (debug_nesting). We only save the intercepted
+   arguments if the nesting is 1.  */
+static int debug_nesting = 0;
+
+static tree *symbol_queue;
+static int symbol_queue_index = 0;
+static int symbol_queue_size = 0;
+
 #define DBXOUT_DECR_NESTING \
   if (--debug_nesting == 0 && symbol_queue_index > 0) \
     { emit_pending_bincls_if_required (); debug_flush_symbol_queue (); }
@@ -333,6 +347,7 @@ static const char *dbxout_common_check (tree, int *);
 static void dbxout_global_decl (tree);
 static void dbxout_type_decl (tree, int);
 static void dbxout_handle_pch (unsigned);
+static void debug_free_queue (void);
 
 /* The debug hooks structure.  */
 #if defined (DBX_DEBUGGING_INFO)
@@ -1403,7 +1418,73 @@ dbxout_type_index (tree type)
 }
 
 
+/* Generate the symbols for any queued up type symbols we encountered
+   while generating the type info for some originally used symbol.
+   This might generate additional entries in the queue.  Only when
+   the nesting depth goes to 0 is this routine called.  */
+
+static void
+debug_flush_symbol_queue (void)
+{
+  int i;
+
+  /* Make sure that additionally queued items are not flushed
+     prematurely.  */
+
+  ++debug_nesting;
+
+  for (i = 0; i < symbol_queue_index; ++i)
+    {
+      /* If we pushed queued symbols then such symbols must be
+         output no matter what anyone else says.  Specifically,
+         we need to make sure dbxout_symbol() thinks the symbol was
+         used and also we need to override TYPE_DECL_SUPPRESS_DEBUG
+         which may be set for outside reasons.  */
+      int saved_tree_used = TREE_USED (symbol_queue[i]);
+      int saved_suppress_debug = TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]);
+      TREE_USED (symbol_queue[i]) = 1;
+      TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = 0;
+
+#ifdef DBX_DEBUGGING_INFO
+      dbxout_symbol (symbol_queue[i], 0);
+#endif
+
+      TREE_USED (symbol_queue[i]) = saved_tree_used;
+      TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = saved_suppress_debug;
+    }
+
+  symbol_queue_index = 0;
+  --debug_nesting;
+}
 
+/* Queue a type symbol needed as part of the definition of a decl
+   symbol.  These symbols are generated when debug_flush_symbol_queue()
+   is called.  */
+
+static void
+debug_queue_symbol (tree decl)
+{
+  if (symbol_queue_index >= symbol_queue_size)
+    {
+      symbol_queue_size += 10;
+      symbol_queue = XRESIZEVEC (tree, symbol_queue, symbol_queue_size);
+    }
+
+  symbol_queue[symbol_queue_index++] = decl;
+}
+
+/* Free symbol queue.  */
+static void
+debug_free_queue (void)
+{
+  if (symbol_queue)
+    {
+      free (symbol_queue);
+      symbol_queue = NULL;
+      symbol_queue_size = 0;
+    }
+}
+
 /* Used in several places: evaluates to '0' for a private decl,
    '1' for a protected decl, '2' for a public decl.  */
 #define DECL_ACCESSIBILITY_CHAR(DECL) \
diff --git a/gcc/debug.h b/gcc/debug.h
index ffdca54..efdffe1 100644
--- a/gcc/debug.h
+++ b/gcc/debug.h
@@ -186,12 +186,6 @@ extern int dwarf2out_do_frame (void);
 extern int dwarf2out_do_cfi_asm (void);
 extern void dwarf2out_switch_text_section (void);
 
-extern void debug_flush_symbol_queue (void);
-extern void debug_queue_symbol (tree);
-extern void debug_free_queue (void);
-extern int debug_nesting;
-extern int symbol_queue_index;
-
 const char *remap_debug_filename (const char *);
 void add_debug_prefix_map (const char *);
 
diff --git a/gcc/final.c b/gcc/final.c
index cc7234c..3d97397 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -4146,87 +4146,6 @@ leaf_renumber_regs_insn (rtx in_rtx)
       }
 }
 #endif
-
-
-/* When -gused is used, emit debug info for only used symbols. But in
-   addition to the standard intercepted debug_hooks there are some direct
-   calls into this file, i.e., dbxout_symbol, dbxout_parms, and dbxout_reg_params.
-   Those routines may also be called from a higher level intercepted routine. So
-   to prevent recording data for an inner call to one of these for an intercept,
-   we maintain an intercept nesting counter (debug_nesting). We only save the
-   intercepted arguments if the nesting is 1.  */
-int debug_nesting = 0;
-
-static tree *symbol_queue;
-int symbol_queue_index = 0;
-static int symbol_queue_size = 0;
-
-/* Generate the symbols for any queued up type symbols we encountered
-   while generating the type info for some originally used symbol.
-   This might generate additional entries in the queue.  Only when
-   the nesting depth goes to 0 is this routine called.  */
-
-void
-debug_flush_symbol_queue (void)
-{
-  int i;
-
-  /* Make sure that additionally queued items are not flushed
-     prematurely.  */
-
-  ++debug_nesting;
-
-  for (i = 0; i < symbol_queue_index; ++i)
-    {
-      /* If we pushed queued symbols then such symbols must be
-         output no matter what anyone else says.  Specifically,
-         we need to make sure dbxout_symbol() thinks the symbol was
-         used and also we need to override TYPE_DECL_SUPPRESS_DEBUG
-         which may be set for outside reasons.  */
-      int saved_tree_used = TREE_USED (symbol_queue[i]);
-      int saved_suppress_debug = TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]);
-      TREE_USED (symbol_queue[i]) = 1;
-      TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = 0;
-
-#ifdef DBX_DEBUGGING_INFO
-      dbxout_symbol (symbol_queue[i], 0);
-#endif
-
-      TREE_USED (symbol_queue[i]) = saved_tree_used;
-      TYPE_DECL_SUPPRESS_DEBUG (symbol_queue[i]) = saved_suppress_debug;
-    }
-
-  symbol_queue_index = 0;
-  --debug_nesting;
-}
-
-/* Queue a type symbol needed as part of the definition of a decl
-   symbol.  These symbols are generated when debug_flush_symbol_queue()
-   is called.  */
-
-void
-debug_queue_symbol (tree decl)
-{
-  if (symbol_queue_index >= symbol_queue_size)
-    {
-      symbol_queue_size += 10;
-      symbol_queue = XRESIZEVEC (tree, symbol_queue, symbol_queue_size);
-    }
-
-  symbol_queue[symbol_queue_index++] = decl;
-}
-
-/* Free symbol queue.  */
-void
-debug_free_queue (void)
-{
-  if (symbol_queue)
-    {
-      free (symbol_queue);
-      symbol_queue = NULL;
-      symbol_queue_size = 0;
-    }
-}
 
 /* Turn the RTL into assembly.  */
 static unsigned int