du_chain.insn is an rtx_insn

gcc/
	* regrename.h (struct du_chain): Strengthen field "insn" from rtx
	to rtx_insn *.

From-SVN: r214483

gcc/ChangeLog

 2014-08-25  David Malcolm  <dmalcolm@redhat.com>
 
+	* regrename.h (struct du_chain): Strengthen field "insn" from rtx
+	to rtx_insn *.
+
+2014-08-25  David Malcolm  <dmalcolm@redhat.com>
+
 	* sel-sched-ir.h (struct sel_region_bb_info_def): Strengthen field
 	"note_list" from rtx to rtx_insn *.
 	(BB_NOTE_LIST): Replace this function and...

gcc/regrename.h

@@ -56,7 +56,7 @@ struct du_chain
   struct du_chain *next_use;
 
   /* The insn where the register appears.  */
-  rtx insn;
+  rtx_insn *insn;
   /* The location inside the insn.  */
   rtx *loc;
   /* The register class required by the insn at this location.  */