toplev.c (rest_of_compilation): Delete dead jumptables before loop.

	* toplev.c (rest_of_compilation): Delete dead jumptables before
	loop.
	* flow.c (delete_dead_jumptables): Make global.
	* rtl.h (delete_dead_jumptables): Declare.

From-SVN: r50205

gcc/ChangeLog

+Fri Mar  1 20:59:14 CET 2002  Jan Hubicka  <jh@suse.cz>
+
+	* toplev.c (rest_of_compilation): Delete dead jumptables before
+	loop.
+	* flow.c (delete_dead_jumptables): Make global.
+	* rtl.h (delete_dead_jumptables): Declare.
+
 2002-03-01  David Edelsohn  <edelsohn@gnu.org>
 
 	* config/rs6000/rs6000.h (HANDLE_PRAGMA_PACK): Delete.

gcc/flow.c

@@ -336,7 +336,6 @@ static void invalidate_mems_from_autoinc PARAMS ((struct propagate_block_info *,
 						  rtx));
 static void invalidate_mems_from_set	PARAMS ((struct propagate_block_info *,
 						 rtx));
-static void delete_dead_jumptables	PARAMS ((void));
 static void clear_log_links		PARAMS ((sbitmap));
 
 
@@ -844,7 +843,7 @@ delete_noop_moves (f)
    time of removing tablejump insn as they are referenced by the preceding
    insns computing the destination, so we delay deleting and garbagecollect
    them once life information is computed.  */
-static void
+void
 delete_dead_jumptables ()
 {
   rtx insn, next;

gcc/rtl.h

@@ -1853,6 +1853,7 @@ extern void set_new_first_and_last_insn		PARAMS ((rtx, rtx));
 extern void set_new_first_and_last_label_num	PARAMS ((int, int));
 extern void set_new_last_label_num		PARAMS ((int));
 extern void unshare_all_rtl_again		PARAMS ((rtx));
+extern void set_first_insn			PARAMS ((rtx));
 extern void set_last_insn			PARAMS ((rtx));
 extern void link_cc0_insns			PARAMS ((rtx));
 extern void add_insn				PARAMS ((rtx));
@@ -1936,6 +1937,7 @@ extern void move_by_pieces		PARAMS ((rtx, rtx,
 /* In flow.c */
 extern void recompute_reg_usage			PARAMS ((rtx, int));
 extern int initialize_uninitialized_subregs	PARAMS ((void));
+extern void delete_dead_jumptables		PARAMS ((void));
 #ifdef BUFSIZ
 extern void print_rtl_with_bb			PARAMS ((FILE *, rtx));
 extern void dump_flow_info			PARAMS ((FILE *));

gcc/toplev.c

@@ -2864,6 +2864,7 @@ rest_of_compilation (decl)
   if (optimize > 0)
     {
       timevar_push (TV_LOOP);
+      delete_dead_jumptables ();
       open_dump_file (DFI_loop, decl);
       /* CFG is no longer maintained up-to-date.  */
       free_bb_for_insn ();