[PATCH 5/7] remove cast in delete_insn_chain

[tbsaunde+gcc]

From: Trevor Saunders <tbsaunde+...@tbsaunde.org>

gcc/ChangeLog:

2016-10-17  Trevor Saunders  <tbsaunde+...@tbsaunde.org>

        * cfgrtl.c (delete_insn_chain): Change argument type to rtx_insn *
        and adjust for that.
        * cfgrtl.h (delete_insn_chain): Adjust prototype.
---
 gcc/cfgrtl.c | 8 +++-----
 gcc/cfgrtl.h | 2 +-
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c
index 813f7ce..d2719db 100644
--- a/gcc/cfgrtl.c
+++ b/gcc/cfgrtl.c
@@ -240,17 +240,15 @@ delete_insn_and_edges (rtx_insn *insn)
    insns that cannot be removed to NULL.  */
 
 void
-delete_insn_chain (rtx start, rtx finish, bool clear_bb)
+delete_insn_chain (rtx start, rtx_insn *finish, bool clear_bb)
 {
-  rtx_insn *prev, *current;
-
   /* Unchain the insns one by one.  It would be quicker to delete all of these
      with a single unchaining, rather than one at a time, but we need to keep
      the NOTE's.  */
-  current = safe_as_a <rtx_insn *> (finish);
+  rtx_insn *current = finish;
   while (1)
     {
-      prev = PREV_INSN (current);
+      rtx_insn *prev = PREV_INSN (current);
       if (NOTE_P (current) && !can_delete_note_p (as_a <rtx_note *> (current)))
        ;
       else
diff --git a/gcc/cfgrtl.h b/gcc/cfgrtl.h
index d81928a..f4c1396 100644
--- a/gcc/cfgrtl.h
+++ b/gcc/cfgrtl.h
@@ -22,7 +22,7 @@ along with GCC; see the file COPYING3.  If not see
 
 extern void delete_insn (rtx);
 extern bool delete_insn_and_edges (rtx_insn *);
-extern void delete_insn_chain (rtx, rtx, bool);
+extern void delete_insn_chain (rtx, rtx_insn *, bool);
 extern basic_block create_basic_block_structure (rtx_insn *, rtx_insn *,
                                                 rtx_note *, basic_block);
 extern void compute_bb_for_insn (void);
-- 
2.9.3