final accepts an rtx_insn

gcc/
	* output.h (final): Strengthen param 1 from rtx to rtx_insn *.
	* final.c (final): Likewise.  Rename param back from
	"uncast_first" to "first" and eliminate the checked cast from rtx
	to rtx_insn *.

From-SVN: r214479

gcc/ChangeLog

 2014-08-25  David Malcolm  <dmalcolm@redhat.com>
 
+	* output.h (final): Strengthen param 1 from rtx to rtx_insn *.
+	* final.c (final): Likewise.  Rename param back from
+	"uncast_first" to "first" and eliminate the checked cast from rtx
+	to rtx_insn *.
+
+2014-08-25  David Malcolm  <dmalcolm@redhat.com>
+
 	* output.h (shorten_branches): Strengthen param from rtx to
 	rtx_insn *.
 

gcc/final.c

@@ -1958,9 +1958,8 @@ dump_basic_block_info (FILE *file, rtx_insn *insn, basic_block *start_to_bb,
    For description of args, see `final_start_function', above.  */
 
 void
-final (rtx uncast_first, FILE *file, int optimize_p)
+final (rtx_insn *first, FILE *file, int optimize_p)
 {
-  rtx_insn *first = safe_as_a <rtx_insn *> (uncast_first);
   rtx_insn *insn, *next;
   int seen = 0;
 

gcc/output.h

@@ -65,7 +65,7 @@ extern void final_start_function (rtx, FILE *, int);
 extern void final_end_function (void);
 
 /* Output assembler code for some insns: all or part of a function.  */
-extern void final (rtx, FILE *, int);
+extern void final (rtx_insn *, FILE *, int);
 
 /* The final scan for one insn, INSN.  Args are same as in `final', except
    that INSN is the insn being scanned.  Value returned is the next insn to