tree.h (DECL_IGNORED_P): Document further effect for FUNCTION_DECL.

	* tree.h (DECL_IGNORED_P): Document further effect for FUNCTION_DECL.
	* cgraphunit.c (cgraph_expand_function): If DECL_IGNORED_P is set on
	the function, temporarily point the debug interface to the null one.

From-SVN: r121861

gcc/ChangeLog

 2007-02-12  Eric Botcazou  <ebotcazou@adacore.com>
 
+	* tree.h (DECL_IGNORED_P): Document further effect for FUNCTION_DECL.
+	* cgraphunit.c (cgraph_expand_function): If DECL_IGNORED_P is set on
+	the function, temporarily point the debug interface to the null one.
+
+2007-02-12  Eric Botcazou  <ebotcazou@adacore.com>
+
 	* dwarf2out.c (round_up_to_align): New static function.
 	(field_byte_offset): Use it to round the offset.
 

gcc/cgraphunit.c

@@ -984,6 +984,8 @@ cgraph_mark_functions_to_output (void)
 static void
 cgraph_expand_function (struct cgraph_node *node)
 {
+  enum debug_info_type save_write_symbols = NO_DEBUG;
+  const struct gcc_debug_hooks *save_debug_hooks = NULL;
   tree decl = node->decl;
 
   /* We ought to not compile any inline clones.  */
@@ -994,6 +996,14 @@ cgraph_expand_function (struct cgraph_node *node)
 
   gcc_assert (node->lowered);
 
+  if (DECL_IGNORED_P (decl))
+    {
+      save_write_symbols = write_symbols;
+      write_symbols = NO_DEBUG;
+      save_debug_hooks = debug_hooks;
+      debug_hooks = &do_nothing_debug_hooks;
+    }
+
   /* Generate RTL for the body of DECL.  */
   lang_hooks.callgraph.expand_function (decl);
 
@@ -1001,6 +1011,12 @@ cgraph_expand_function (struct cgraph_node *node)
   /* ??? Can happen with nested function of extern inline.  */
   gcc_assert (TREE_ASM_WRITTEN (node->decl));
 
+  if (DECL_IGNORED_P (decl))
+    {
+      write_symbols = save_write_symbols;
+      debug_hooks = save_debug_hooks;
+    }
+
   current_function_decl = NULL;
   if (!cgraph_preserve_function_body_p (node->decl))
     {

gcc/tree.h

@@ -2540,7 +2540,8 @@ struct tree_memory_partition_tag GTY(())
   (DECL_COMMON_CHECK (NODE)->decl_common.debug_expr_is_from)
 
 /* Nonzero for a given ..._DECL node means that the name of this node should
-   be ignored for symbolic debug purposes.  */
+   be ignored for symbolic debug purposes.  Moreover, for a FUNCTION_DECL,
+   the body of the function should also be ignored.  */
 #define DECL_IGNORED_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.ignored_flag)
 
 /* Nonzero for a given ..._DECL node means that this node represents an