prev_cc0_setter can take a rtx_insn *

gcc/ChangeLog:

2015-05-08  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* emit-rtl.c (prev_cc0_setter): Change argument type to rtx_insn *.
	* rtl.h: Adjust.

From-SVN: r222944

gcc/ChangeLog

 2015-05-08  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
+	* emit-rtl.c (prev_cc0_setter): Change argument type to rtx_insn *.
+	* rtl.h: Adjust.
+
+2015-05-08  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
+
 	* rtlanal.c (noop_move_p): Change argument type to rtx_insn *.
 	* rtl.h: Adjust.
 

gcc/emit-rtl.c

@@ -3572,10 +3572,8 @@ next_cc0_user (rtx uncast_insn)
    note, it is the previous insn.  */
 
 rtx_insn *
-prev_cc0_setter (rtx uncast_insn)
+prev_cc0_setter (rtx_insn *insn)
 {
-  rtx_insn *insn = safe_as_a <rtx_insn *> (uncast_insn);
-
   rtx note = find_reg_note (insn, REG_CC_SETTER, NULL_RTX);
 
   if (note)

gcc/rtl.h

@@ -2719,7 +2719,7 @@ extern rtx_insn *prev_active_insn (rtx);
 extern rtx_insn *next_active_insn (rtx);
 extern int active_insn_p (const_rtx);
 extern rtx_insn *next_cc0_user (rtx);
-extern rtx_insn *prev_cc0_setter (rtx);
+extern rtx_insn *prev_cc0_setter (rtx_insn *);
 
 /* In emit-rtl.c  */
 extern int insn_line (const rtx_insn *);