* basic-block.h (single_succ_p, single_pred_p, single_succ_edge,

	single_pred_edge, single_succ, single_pred): Improve comments.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@96293 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 575baac..adbf382 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,11 @@
 2005-03-11  Zdenek Dvorak  <dvorakz@suse.cz>
 
        * basic-block.h (single_succ_p, single_pred_p, single_succ_edge,
+       single_pred_edge, single_succ, single_pred): Improve comments.
+
+2005-03-11  Zdenek Dvorak  <dvorakz@suse.cz>
+
+       * basic-block.h (single_succ_p, single_pred_p, single_succ_edge,
        single_pred_edge, single_succ, single_pred): New inline functions.
        * bb-reorder.c (rotate_loop, find_traces_1_round,
        add_labels_and_missing_jumps, fix_up_fall_thru_edges,

diff --git a/gcc/basic-block.h b/gcc/basic-block.h
index 576784d..0821dc5 100644 (file)
--- a/gcc/basic-block.h
+++ b/gcc/basic-block.h
@@ -563,7 +563,8 @@ single_pred_p (basic_block bb)
   return EDGE_COUNT (bb->preds) == 1;
 }
 
-/* Returns the single successor edge of basic block BB.  */
+/* Returns the single successor edge of basic block BB.  Aborts if
+   BB does not have exactly one successor.  */
 
 static inline edge
 single_succ_edge (basic_block bb)
@@ -572,7 +573,8 @@ single_succ_edge (basic_block bb)
   return EDGE_SUCC (bb, 0);
 }
 
-/* Returns the single predecessor edge of basic block BB.  */
+/* Returns the single predecessor edge of basic block BB.  Aborts
+   if BB does not have exactly one predecessor.  */
 
 static inline edge
 single_pred_edge (basic_block bb)
@@ -581,7 +583,8 @@ single_pred_edge (basic_block bb)
   return EDGE_PRED (bb, 0);
 }
 
-/* Returns the single successor block of basic block BB.  */
+/* Returns the single successor block of basic block BB.  Aborts
+   if BB does not have exactly one successor.  */
 
 static inline basic_block
 single_succ (basic_block bb)
@@ -589,7 +592,8 @@ single_succ (basic_block bb)
   return single_succ_edge (bb)->dest;
 }
 
-/* Returns the single predecessor block of basic block BB.  */
+/* Returns the single predecessor block of basic block BB.  Aborts
+   if BB does not have exactly one predecessor.*/
 
 static inline basic_block
 single_pred (basic_block bb)