[PATCH 086/236] jump.c: Use rtx_insn in a few places (also touches rtl.h and cfgexpand.c)

[David Malcolm <dmalcolm at redhat dot com>]

gcc/
	* rtl.h (rebuild_jump_labels): Strengthen param "f" from rtx to
	rtx_insn *.
	(rebuild_jump_labels_chain): Likewise for param "chain".

	* cfgexpand.c (pass_expand::execute): Add checked cast to
	rtx_insn * when calling rebuild_jump_labels_chain in region where
	we know e->insns.r is non-NULL.

	* jump.c (rebuild_jump_labels_1): Strengthen param "f" from rtx to
	rtx_insn *.
	(rebuild_jump_labels): Likewise.
	(rebuild_jump_labels_chain): Likewise for param "chain".
	(cleanup_barriers): Likewise for locals "insn", "next", "prev".
	(init_label_info): Likewise for param "f".
	(maybe_propagate_label_ref): Likewise for params "jump_insn",
	"prev_nonjump_insn".
	(mark_all_labels): Likewise for param "f" and locals "insn",
	"prev_nonjump_insn".
---
 gcc/cfgexpand.c |  2 +-
 gcc/jump.c      | 24 ++++++++++++------------
 gcc/rtl.h       |  4 ++--
 3 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c
index d2dc924..731faeb 100644
--- a/gcc/cfgexpand.c
+++ b/gcc/cfgexpand.c
@@ -5856,7 +5856,7 @@ pass_expand::execute (function *fun)
 	{
 	  if (e->insns.r)
 	    {
-	      rebuild_jump_labels_chain (e->insns.r);
+	      rebuild_jump_labels_chain (as_a <rtx_insn *> (e->insns.r));
 	      /* Put insns after parm birth, but before
 		 NOTE_INSNS_FUNCTION_BEG.  */
 	      if (e->src == ENTRY_BLOCK_PTR_FOR_FN (fun)
diff --git a/gcc/jump.c b/gcc/jump.c
index b51ca17..1aab9bb 100644
--- a/gcc/jump.c
+++ b/gcc/jump.c
@@ -62,8 +62,8 @@ along with GCC; see the file COPYING3.  If not see
    or even change what is live at any point.
    So perhaps let combiner do it.  */
 
-static void init_label_info (rtx);
-static void mark_all_labels (rtx);
+static void init_label_info (rtx_insn *);
+static void mark_all_labels (rtx_insn *);
 static void mark_jump_label_1 (rtx, rtx, bool, bool);
 static void mark_jump_label_asm (rtx, rtx);
 static void redirect_exp_1 (rtx *, rtx, rtx, rtx);
@@ -72,7 +72,7 @@ static int returnjump_p_1 (rtx *, void *);
 
 /* Worker for rebuild_jump_labels and rebuild_jump_labels_chain.  */
 static void
-rebuild_jump_labels_1 (rtx f, bool count_forced)
+rebuild_jump_labels_1 (rtx_insn *f, bool count_forced)
 {
   rtx insn;
 
@@ -96,7 +96,7 @@ rebuild_jump_labels_1 (rtx f, bool count_forced)
    instructions and jumping insns that have labels as operands
    (e.g. cbranchsi4).  */
 void
-rebuild_jump_labels (rtx f)
+rebuild_jump_labels (rtx_insn *f)
 {
   rebuild_jump_labels_1 (f, true);
 }
@@ -105,7 +105,7 @@ rebuild_jump_labels (rtx f)
    forced_labels.  It can be used on insn chains that aren't the 
    main function chain.  */
 void
-rebuild_jump_labels_chain (rtx chain)
+rebuild_jump_labels_chain (rtx_insn *chain)
 {
   rebuild_jump_labels_1 (chain, false);
 }
@@ -121,7 +121,7 @@ rebuild_jump_labels_chain (rtx chain)
 static unsigned int
 cleanup_barriers (void)
 {
-  rtx insn, next, prev;
+  rtx_insn *insn, *next, *prev;
   for (insn = get_insns (); insn; insn = next)
     {
       next = NEXT_INSN (insn);
@@ -181,9 +181,9 @@ make_pass_cleanup_barriers (gcc::context *ctxt)
    notes whose labels don't occur in the insn any more.  */
 
 static void
-init_label_info (rtx f)
+init_label_info (rtx_insn *f)
 {
-  rtx insn;
+  rtx_insn *insn;
 
   for (insn = f; insn; insn = NEXT_INSN (insn))
     {
@@ -219,7 +219,7 @@ init_label_info (rtx f)
    load into a jump_insn that uses it.  */
 
 static void
-maybe_propagate_label_ref (rtx jump_insn, rtx prev_nonjump_insn)
+maybe_propagate_label_ref (rtx_insn *jump_insn, rtx_insn *prev_nonjump_insn)
 {
   rtx label_note, pc, pc_src;
 
@@ -267,9 +267,9 @@ maybe_propagate_label_ref (rtx jump_insn, rtx prev_nonjump_insn)
    Combine consecutive labels, and count uses of labels.  */
 
 static void
-mark_all_labels (rtx f)
+mark_all_labels (rtx_insn *f)
 {
-  rtx insn;
+  rtx_insn *insn;
 
   if (current_ir_type () == IR_RTL_CFGLAYOUT)
     {
@@ -299,7 +299,7 @@ mark_all_labels (rtx f)
     }
   else
     {
-      rtx prev_nonjump_insn = NULL;
+      rtx_insn *prev_nonjump_insn = NULL;
       for (insn = f; insn; insn = NEXT_INSN (insn))
 	{
 	  if (INSN_DELETED_P (insn))
diff --git a/gcc/rtl.h b/gcc/rtl.h
index 9c097b6..992d4af 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -3029,8 +3029,8 @@ extern unsigned int reg_or_subregno (const_rtx);
 extern int redirect_jump_1 (rtx, rtx);
 extern void redirect_jump_2 (rtx, rtx, rtx, int, int);
 extern int redirect_jump (rtx, rtx, int);
-extern void rebuild_jump_labels (rtx);
-extern void rebuild_jump_labels_chain (rtx);
+extern void rebuild_jump_labels (rtx_insn *);
+extern void rebuild_jump_labels_chain (rtx_insn *);
 extern rtx reversed_comparison (const_rtx, enum machine_mode);
 extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx);
 extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx,
-- 
1.8.5.3