flow.c (split_block): Fix update of registers live at end of split block.

	* flow.c (split_block): Fix update of registers live at
	end of split block.

From-SVN: r36343

gcc/ChangeLog

+2000-09-13  Michael Hayes  <mhayes@cygnus.com>
+
+	* flow.c (split_block): Fix update of registers live at
+	end of split block.
+
 Tue Sep 12 01:51:38 MET DST 2000  Jan Hubicka  <jh@suse.cz>
 
 	* i386.md (add?i_3, add?i_5): New.

gcc/flow.c

@@ -1438,9 +1438,6 @@ split_block (bb, insn)
   rtx bb_note;
   int i, j;
 
-  if (BLOCK_FOR_INSN (insn) != bb)
-    abort ();
-
   /* There is no point splitting the block after its end.  */
   if (bb->end == insn)
     return 0;
@@ -1510,7 +1507,7 @@ split_block (bb, insn)
 	 propagate_block to determine which registers are live.  */
       COPY_REG_SET (new_bb->global_live_at_start, bb->global_live_at_end);
       propagate_block (new_bb, new_bb->global_live_at_start, NULL, 0);
-      COPY_REG_SET (new_bb->global_live_at_end, 
+      COPY_REG_SET (bb->global_live_at_end, 
 		    new_bb->global_live_at_start);
     }