make next_cc0_user take rtx_insn *

gcc/ChangeLog:

2016-09-22  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* emit-rtl.c (next_cc0_user): Make argument type rtx_insn *.
	* rtl.h: Adjust prototype.

From-SVN: r240362

gcc/ChangeLog

 2016-09-22  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
+	* emit-rtl.c (next_cc0_user): Make argument type rtx_insn *.
+	* rtl.h: Adjust prototype.
+
+2016-09-22  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
+
 	* emit-rtl.c (next_active_insn): Change argument type to
 	rtx_insn *.
 	(prev_active_insn): Likewise.

gcc/emit-rtl.c

@@ -3540,10 +3540,8 @@ prev_active_insn (rtx_insn *insn)
    Return 0 if we can't find the insn.  */
 
 rtx_insn *
-next_cc0_user (rtx uncast_insn)
+next_cc0_user (rtx_insn *insn)
 {
-  rtx_insn *insn = safe_as_a <rtx_insn *> (uncast_insn);
-
   rtx note = find_reg_note (insn, REG_CC_USER, NULL_RTX);
 
   if (note)

gcc/rtl.h

@@ -2847,7 +2847,7 @@ extern rtx_insn *next_real_insn (rtx);
 extern rtx_insn *prev_active_insn (rtx_insn *);
 extern rtx_insn *next_active_insn (rtx_insn *);
 extern int active_insn_p (const rtx_insn *);
-extern rtx_insn *next_cc0_user (rtx);
+extern rtx_insn *next_cc0_user (rtx_insn *);
 extern rtx_insn *prev_cc0_setter (rtx_insn *);
 
 /* In emit-rtl.c  */