fixup_args_size_notes takes a pair of rtx_insn

gcc/
2014-09-05  David Malcolm  <dmalcolm@redhat.com>

	* emit-rtl.c (try_split): Update NULL_RTX to NULL in call to
	fixup_args_size_notes.
	* expr.c (fixup_args_size_notes): Strengthen first two params from
	rtx to rtx_insn *, eliminating a checked cast.
	* rtl.h (fixup_args_size_notes): Strengthen first two params from
	rtx to rtx_insn *.

From-SVN: r214930

gcc/ChangeLog

 2014-09-05  David Malcolm  <dmalcolm@redhat.com>
 
+	* emit-rtl.c (try_split): Update NULL_RTX to NULL in call to
+	fixup_args_size_notes.
+	* expr.c (fixup_args_size_notes): Strengthen first two params from
+	rtx to rtx_insn *, eliminating a checked cast.
+	* rtl.h (fixup_args_size_notes): Strengthen first two params from
+	rtx to rtx_insn *.
+
+2014-09-05  David Malcolm  <dmalcolm@redhat.com>
+
 	* haifa-sched.c (get_ready_element): Strengthen return type from
 	rtx to rtx_insn *.
 	* sched-int.h (get_ready_element): Likewise.

gcc/emit-rtl.c

@@ -3756,7 +3756,7 @@ try_split (rtx pat, rtx uncast_trial, int last)
 #endif
 
 	case REG_ARGS_SIZE:
-	  fixup_args_size_notes (NULL_RTX, insn_last, INTVAL (XEXP (note, 0)));
+	  fixup_args_size_notes (NULL, insn_last, INTVAL (XEXP (note, 0)));
 	  break;
 
 	case REG_CALL_DECL:

gcc/expr.c

@@ -3953,9 +3953,8 @@ find_args_size_adjust (rtx insn)
 }
 
 int
-fixup_args_size_notes (rtx prev, rtx uncast_last, int end_args_size)
+fixup_args_size_notes (rtx_insn *prev, rtx_insn *last, int end_args_size)
 {
-  rtx_insn *last = safe_as_a <rtx_insn *> (uncast_last);
   int args_size = end_args_size;
   bool saw_unknown = false;
   rtx_insn *insn;

gcc/rtl.h

@@ -3363,7 +3363,7 @@ extern void emit_jump (rtx);
 extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
 			   unsigned int, int);
 extern HOST_WIDE_INT find_args_size_adjust (rtx);
-extern int fixup_args_size_notes (rtx, rtx, int);
+extern int fixup_args_size_notes (rtx_insn *, rtx_insn *, int);
 
 /* In cfgrtl.c */
 extern void print_rtl_with_bb (FILE *, const rtx_insn *, int);