cfghooks.c (tidy_fallthru_edges): Add ??? comment.

	* cfghooks.c (tidy_fallthru_edges): Add ??? comment.
	* tree-inline.c (delete_unreachable_blocks_update_callgraph): Remove
	call to tidy_fallthru_edges.

From-SVN: r171936

gcc/ChangeLog

+2011-04-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* cfghooks.c (tidy_fallthru_edges): Add ??? comment.
+	* tree-inline.c (delete_unreachable_blocks_update_callgraph): Remove
+	call to tidy_fallthru_edges.
+
 2011-04-04  Joseph Myers  <joseph@codesourcery.com>
 
 	* doc/options.texi (ToLower): Document.

gcc/cfghooks.c

@@ -830,7 +830,9 @@ tidy_fallthru_edge (edge e)
 /* Fix up edges that now fall through, or rather should now fall through
    but previously required a jump around now deleted blocks.  Simplify
    the search by only examining blocks numerically adjacent, since this
-   is how they were created.  */
+   is how they were created.
+
+   ??? This routine is currently RTL specific.  */
 
 void
 tidy_fallthru_edges (void)

gcc/tree-inline.c

@@ -4964,8 +4964,6 @@ delete_unreachable_blocks_update_callgraph (copy_body_data *id)
 	}
     }
 
-  if (changed)
-    tidy_fallthru_edges ();
   return changed;
 }