basic-block.h (rtl_bb_info): Break out head_, end_, global_live_at_start, global_live_at_end from ...

	* basic-block.h (rtl_bb_info): Break out head_, end_,
	global_live_at_start, global_live_at_end from ...
	(basic_block_def): ... here; update all references
	(BB_RTL): New flag.
	(init_rtl_bb_info): Declare.
	* cfgexpand.c (expand_gimple_basic_block): Init bb info, set BB_RTL
	flag.
	* cfgrtl.c: Include ggc.h
	(create_basic_block_structure): Init bb info.
	(rtl_verify_flow_info_1): Check BB_RTL flag and rtl_bb_info pointer.
	(init_rtl_bb_info): New function.
	(rtl_merge_block, cfglayout_merge_block): Copy global_live_at_end here.
	* cfghooks.c (merge_block): Do not copy global_live_at_end here.
	* cfg.c (clear_bb_flags): Skip BB_RTL flag.
	(dump_flow_info): Gueard global_live_* dumping.

From-SVN: r101082

1 files changed, 14 insertions, 10 deletions

diff --git a/gcc/cfg.c b/gcc/cfg.c
index f33a950..4add5df 100644
--- a/gcc/cfg.c
+++ b/gcc/cfg.c
@@ -421,7 +421,8 @@ clear_bb_flags (void)
   basic_block bb;
 
   FOR_BB_BETWEEN (bb, ENTRY_BLOCK_PTR, NULL, next_bb)
-    bb->flags = BB_PARTITION (bb)  | (bb->flags & BB_DISABLE_SCHEDULE);
+    bb->flags = (BB_PARTITION (bb)  | (bb->flags & BB_DISABLE_SCHEDULE)
+		 | (bb->flags & BB_RTL));
 }
 
 /* Check the consistency of profile information.  We can't do that
@@ -553,16 +554,19 @@ dump_flow_info (FILE *file)
       FOR_EACH_EDGE (e, ei, bb->succs)
 	dump_edge_info (file, e, 1);
 
-      if (bb->global_live_at_start)
+      if (bb->flags & BB_RTL)
 	{
-	  fprintf (file, "\nRegisters live at start:");
-	  dump_regset (bb->global_live_at_start, file);
-	}
-
-      if (bb->global_live_at_end)
-	{
-	  fprintf (file, "\nRegisters live at end:");
-	  dump_regset (bb->global_live_at_end, file);
+	  if (bb->il.rtl->global_live_at_start)
+	    {
+	      fprintf (file, "\nRegisters live at start:");
+	      dump_regset (bb->il.rtl->global_live_at_start, file);
+	    }
+
+	  if (bb->il.rtl->global_live_at_end)
+	    {
+	      fprintf (file, "\nRegisters live at end:");
+	      dump_regset (bb->il.rtl->global_live_at_end, file);
+	    }
 	}
 
       putc ('\n', file);