diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a5aaf89ac15..bbfc2fe9b30 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2001-02-07  Alexandre Oliva  <aoliva@redhat.com>
+
+	* lcm.c (optimize_mode_switching): Emit mode_set before the
+	JUMP_INSN of an abnormal edge.
+
 2001-02-07  Bernd Schmidt  <bernds@redhat.com>
 
 	* builtins.c (expand_builtin_setjmp_receiver): Emit an ASM_INPUT as
diff --git a/gcc/lcm.c b/gcc/lcm.c
index ff442749605..d092c7a7089 100644
--- a/gcc/lcm.c
+++ b/gcc/lcm.c
@@ -1227,7 +1227,10 @@ optimize_mode_switching (file)
 		 previous block.  */
 	      if (eg->flags & EDGE_ABNORMAL)
 		{
-		  src_bb->end = emit_insn_after (mode_set, src_bb->end);
+		  if (GET_CODE (src_bb->end) == JUMP_INSN)
+		    emit_insn_before (mode_set, src_bb->end);
+		  else
+		    src_bb->end = emit_insn_after (mode_set, src_bb->end);
 		  bb_info[j][src_bb->index].computing = mode;
 		  RESET_BIT (transp[src_bb->index], j);
 		}