[4/7] remove cast to rtx_insn * in remove_note

diff --git a/gcc/config/rl78/rl78.c b/gcc/config/rl78/rl78.c
index fd72a58..db3e25f 100644
--- a/gcc/config/rl78/rl78.c
+++ b/gcc/config/rl78/rl78.c
@@ -2778,7 +2778,7 @@  process_postponed_content_update (void)
    after WHERE.  If TO already contains FROM then do nothing.  Returns TO if
    BEFORE is true, FROM otherwise.  */
 static rtx
-gen_and_emit_move (rtx to, rtx from, rtx where, bool before)
+gen_and_emit_move (rtx to, rtx from, rtx_insn *where, bool before)
 {
   machine_mode mode = GET_MODE (to);
 
@@ -2833,7 +2833,7 @@  gen_and_emit_move (rtx to, rtx from, rtx where, bool before)
    copy it into NEWBASE and return the updated MEM.  Otherwise just
    return M.  Any needed insns are emitted before BEFORE.  */
 static rtx
-transcode_memory_rtx (rtx m, rtx newbase, rtx before)
+transcode_memory_rtx (rtx m, rtx newbase, rtx_insn *before)
 {
   rtx base, index, addendr;
   int addend = 0;
@@ -2934,7 +2934,7 @@  transcode_memory_rtx (rtx m, rtx newbase, rtx before)
 /* Copy SRC to accumulator (A or AX), placing any generated insns
    before BEFORE.  Returns accumulator RTX.  */
 static rtx
-move_to_acc (int opno, rtx before)
+move_to_acc (int opno, rtx_insn *before)
 {
   rtx src = OP (opno);
   machine_mode mode = GET_MODE (src);
@@ -2968,7 +2968,7 @@  force_into_acc (rtx src, rtx_insn *before)
 /* Copy accumulator (A or AX) to DEST, placing any generated insns
    after AFTER.  Returns accumulator RTX.  */
 static rtx
-move_from_acc (unsigned int opno, rtx after)
+move_from_acc (unsigned int opno, rtx_insn *after)
 {
   rtx dest = OP (opno);
   machine_mode mode = GET_MODE (dest);
@@ -2982,7 +2982,7 @@  move_from_acc (unsigned int opno, rtx after)
 /* Copy accumulator (A or AX) to REGNO, placing any generated insns
    before BEFORE.  Returns reg RTX.  */
 static rtx
-move_acc_to_reg (rtx acc, int regno, rtx before)
+move_acc_to_reg (rtx acc, int regno, rtx_insn *before)
 {
   machine_mode mode = GET_MODE (acc);
   rtx reg;
@@ -2995,7 +2995,7 @@  move_acc_to_reg (rtx acc, int regno, rtx before)
 /* Copy SRC to X, placing any generated insns before BEFORE.
    Returns X RTX.  */
 static rtx
-move_to_x (int opno, rtx before)
+move_to_x (int opno, rtx_insn *before)
 {
   rtx src = OP (opno);
   machine_mode mode = GET_MODE (src);
@@ -3018,7 +3018,7 @@  move_to_x (int opno, rtx before)
 /* Copy OP (opno) to H or HL, placing any generated insns before BEFORE.
    Returns H/HL RTX.  */
 static rtx
-move_to_hl (int opno, rtx before)
+move_to_hl (int opno, rtx_insn *before)
 {
   rtx src = OP (opno);
   machine_mode mode = GET_MODE (src);
@@ -3041,7 +3041,7 @@  move_to_hl (int opno, rtx before)
 /* Copy OP (opno) to E or DE, placing any generated insns before BEFORE.
    Returns E/DE RTX.  */
 static rtx
-move_to_de (int opno, rtx before)
+move_to_de (int opno, rtx_insn *before)
 {
   rtx src = OP (opno);
   machine_mode mode = GET_MODE (src);
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 613af48..b5f1dc9 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -26805,8 +26805,8 @@  output_probe_stack_range (rtx reg1, rtx reg2)
    pointer.  That fails when saving regs off r1, and sched moves the
    r31 setup past the reg saves.  */
 
-static rtx
-rs6000_frame_related (rtx insn, rtx reg, HOST_WIDE_INT val,
+static rtx_insn *
+rs6000_frame_related (rtx_insn *insn, rtx reg, HOST_WIDE_INT val,
 		      rtx reg2, rtx repl2)
 {
   rtx repl;
@@ -26970,11 +26970,11 @@  gen_frame_store (rtx reg, rtx frame_reg, int offset)
 /* Save a register into the frame, and emit RTX_FRAME_RELATED_P notes.
    Save REGNO into [FRAME_REG + OFFSET] in mode MODE.  */
 
-static rtx
+static rtx_insn *
 emit_frame_save (rtx frame_reg, machine_mode mode,
 		 unsigned int regno, int offset, HOST_WIDE_INT frame_reg_to_sp)
 {
-  rtx reg, insn;
+  rtx reg;
 
   /* Some cases that need register indexed addressing.  */
   gcc_checking_assert (!((TARGET_ALTIVEC_ABI && ALTIVEC_VECTOR_MODE (mode))
@@ -26985,7 +26985,7 @@  emit_frame_save (rtx frame_reg, machine_mode mode,
 			     && !SPE_CONST_OFFSET_OK (offset))));
 
   reg = gen_rtx_REG (mode, regno);
-  insn = emit_insn (gen_frame_store (reg, frame_reg, offset));
+  rtx_insn *insn = emit_insn (gen_frame_store (reg, frame_reg, offset));
   return rs6000_frame_related (insn, frame_reg, frame_reg_to_sp,
 			       NULL_RTX, NULL_RTX);
 }
@@ -27253,7 +27253,7 @@  ptr_regno_for_savres (int sel)
    out-of-line register save/restore routine, and emit the insn
    or jump_insn as appropriate.  */
 
-static rtx
+static rtx_insn *
 rs6000_emit_savres_rtx (rs6000_stack_t *info,
 			rtx frame_reg_rtx, int save_area_offset, int lr_offset,
 			machine_mode reg_mode, int sel)
@@ -27263,7 +27263,8 @@  rs6000_emit_savres_rtx (rs6000_stack_t *info,
   int reg_size = GET_MODE_SIZE (reg_mode);
   rtx sym;
   rtvec p;
-  rtx par, insn;
+  rtx par;
+  rtx_insn *insn;
 
   offset = 0;
   start_reg = ((sel & SAVRES_REG) == SAVRES_GPR
@@ -27660,7 +27661,7 @@  rs6000_emit_prologue (void)
   rtx frame_reg_rtx = sp_reg_rtx;
   unsigned int cr_save_regno;
   rtx cr_save_rtx = NULL_RTX;
-  rtx insn;
+  rtx_insn *insn;
   int strategy;
   int using_static_chain_p = (cfun->static_chain_decl != NULL_TREE
 			      && df_regs_ever_live_p (STATIC_CHAIN_REGNUM)
@@ -28166,12 +28167,12 @@  rs6000_emit_prologue (void)
 	  if (regno == INVALID_REGNUM)
 	    break;
 
-	  insn
+	  rtx set
 	    = gen_frame_store (gen_rtx_REG (reg_mode, regno),
 			       sp_reg_rtx,
 			       info->ehrd_offset + sp_off + reg_size * (int) i);
-	  RTVEC_ELT (p, i) = insn;
-	  RTX_FRAME_RELATED_P (insn) = 1;
+	  RTVEC_ELT (p, i) = set;
+	  RTX_FRAME_RELATED_P (set) = 1;
 	}
 
       insn = emit_insn (gen_blockage ());
@@ -28183,7 +28184,8 @@  rs6000_emit_prologue (void)
   if (TARGET_AIX && crtl->calls_eh_return)
     {
       rtx tmp_reg, tmp_reg_si, hi, lo, compare_result, toc_save_done, jump;
-      rtx save_insn, join_insn, note;
+      rtx join_insn, note;
+      rtx_insn *save_insn;
       long toc_restore_insn;
 
       tmp_reg = gen_rtx_REG (Pmode, 11);
diff --git a/gcc/reorg.c b/gcc/reorg.c
index da4d7c6..caad82a 100644
--- a/gcc/reorg.c
+++ b/gcc/reorg.c
@@ -226,7 +226,7 @@  static void update_block (rtx_insn *, rtx_insn *);
 static int reorg_redirect_jump (rtx_jump_insn *, rtx);
 static void update_reg_dead_notes (rtx_insn *, rtx_insn *);
 static void fix_reg_dead_note (rtx_insn *, rtx);
-static void update_reg_unused_notes (rtx, rtx);
+static void update_reg_unused_notes (rtx_insn *, rtx);
 static void fill_simple_delay_slots (int);
 static void fill_slots_from_thread (rtx_jump_insn *, rtx, rtx, rtx,
 				    int, int, int, int,
@@ -1805,7 +1805,7 @@  fix_reg_dead_note (rtx_insn *start_insn, rtx stop_insn)
    does.  */
 
 static void
-update_reg_unused_notes (rtx insn, rtx redundant_insn)
+update_reg_unused_notes (rtx_insn *insn, rtx redundant_insn)
 {
   rtx link, next;
 
diff --git a/gcc/rtl.h b/gcc/rtl.h
index c84fe71..9abb054 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -3017,7 +3017,7 @@  extern rtx alloc_reg_note (enum reg_note, rtx, rtx);
 extern void add_reg_note (rtx, enum reg_note, rtx);
 extern void add_int_reg_note (rtx, enum reg_note, int);
 extern void add_shallow_copy_of_reg_note (rtx_insn *, rtx);
-extern void remove_note (rtx, const_rtx);
+extern void remove_note (rtx_insn *, const_rtx);
 extern void remove_reg_equal_equiv_notes (rtx_insn *);
 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
 extern int side_effects_p (const_rtx);
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 4e600c0..508c663 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -2307,7 +2307,7 @@  add_shallow_copy_of_reg_note (rtx_insn *insn, rtx note)
 /* Remove register note NOTE from the REG_NOTES of INSN.  */
 
 void
-remove_note (rtx insn, const_rtx note)
+remove_note (rtx_insn *insn, const_rtx note)
 {
   rtx link;
 
@@ -2328,7 +2328,7 @@  remove_note (rtx insn, const_rtx note)
     {
     case REG_EQUAL:
     case REG_EQUIV:
-      df_notes_rescan (as_a <rtx_insn *> (insn));
+      df_notes_rescan (insn);
       break;
     default:
       break;