remove cast from prev_nonnote_insn_bb

gcc/ChangeLog:

2016-11-01  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* emit-rtl.c (prev_nonnote_insn_bb): Change argument type to
	rtx_insn *.
	* rtl.h (prev_nonnote_insn_bb): Adjust prototype.

From-SVN: r241773

gcc/ChangeLog

 2016-11-01  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
+	* emit-rtl.c (prev_nonnote_insn_bb): Change argument type to
+	rtx_insn *.
+	* rtl.h (prev_nonnote_insn_bb): Adjust prototype.
+
+2016-11-01  Trevor Saunders  <tbsaunde+gcc@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/emit-rtl.c

@@ -3354,9 +3354,8 @@ prev_nonnote_insn (rtx_insn *insn)
    not look inside SEQUENCEs.  */
 
 rtx_insn *
-prev_nonnote_insn_bb (rtx uncast_insn)
+prev_nonnote_insn_bb (rtx_insn *insn)
 {
-  rtx_insn *insn = safe_as_a <rtx_insn *> (uncast_insn);
 
   while (insn)
     {

gcc/rtl.h

@@ -2858,7 +2858,7 @@ extern rtx_call_insn *last_call_insn (void);
 extern rtx_insn *previous_insn (rtx_insn *);
 extern rtx_insn *next_insn (rtx_insn *);
 extern rtx_insn *prev_nonnote_insn (rtx_insn *);
-extern rtx_insn *prev_nonnote_insn_bb (rtx);
+extern rtx_insn *prev_nonnote_insn_bb (rtx_insn *);
 extern rtx_insn *next_nonnote_insn (rtx_insn *);
 extern rtx_insn *next_nonnote_insn_bb (rtx_insn *);
 extern rtx_insn *prev_nondebug_insn (rtx_insn *);