duplicate_insn_chain accepts rtx_insn

gcc/
2014-08-26  David Malcolm  <dmalcolm@redhat.com>

	* rtl.h (duplicate_insn_chain): Strengthen both params from rtx to
	rtx_insn *.
	* cfgrtl.c (duplicate_insn_chain): Likewise for  params "from",
	"to" and locals "insn", "next", "copy".  Remove now-redundant
	checked cast.

From-SVN: r214544

gcc/ChangeLog

 2014-08-26  David Malcolm  <dmalcolm@redhat.com>
 
+	* rtl.h (duplicate_insn_chain): Strengthen both params from rtx to
+	rtx_insn *.
+	* cfgrtl.c (duplicate_insn_chain): Likewise for  params "from",
+	"to" and locals "insn", "next", "copy".  Remove now-redundant
+	checked cast.
+
+2014-08-26  David Malcolm  <dmalcolm@redhat.com>
+
 	* rtl.h (canonicalize_condition): Strengthen param 1 from rtx to
 	rtx_insn * and param 4 from rtx * to rtx_insn **.
 	(get_condition): Strengthen param 1 from rtx to rtx_insn * and

gcc/cfgrtl.c

@@ -4082,9 +4082,9 @@ cfg_layout_can_duplicate_bb_p (const_basic_block bb)
 }
 
 rtx_insn *
-duplicate_insn_chain (rtx from, rtx to)
+duplicate_insn_chain (rtx_insn *from, rtx_insn *to)
 {
-  rtx insn, next, copy;
+  rtx_insn *insn, *next, *copy;
   rtx_note *last;
 
   /* Avoid updating of boundaries of previous basic block.  The
@@ -4167,7 +4167,7 @@ duplicate_insn_chain (rtx from, rtx to)
     }
   insn = NEXT_INSN (last);
   delete_insn (last);
-  return safe_as_a <rtx_insn *> (insn);
+  return insn;
 }
 
 /* Create a duplicate of the basic block BB.  */

gcc/rtl.h

@@ -3200,7 +3200,7 @@ extern int fixup_args_size_notes (rtx, rtx, int);
 
 /* In cfgrtl.c */
 extern void print_rtl_with_bb (FILE *, const_rtx, int);
-extern rtx_insn *duplicate_insn_chain (rtx, rtx);
+extern rtx_insn *duplicate_insn_chain (rtx_insn *, rtx_insn *);
 
 /* In expmed.c */
 extern void init_expmed (void);