loop-doloop.c: Use rtx_insn in a few places

gcc/
	* loop-doloop.c (doloop_valid_p): Strengthen local "insn" from rtx
	to rtx_insn *.
	(add_test): Likewise for locals "seq", "jump".
	(doloop_modify): Likewise for locals "sequence", "jump_insn".

From-SVN: r214342

gcc/ChangeLog

 2014-08-22  David Malcolm  <dmalcolm@redhat.com>
 
+	* loop-doloop.c (doloop_valid_p): Strengthen local "insn" from rtx
+	to rtx_insn *.
+	(add_test): Likewise for locals "seq", "jump".
+	(doloop_modify): Likewise for locals "sequence", "jump_insn".
+
+2014-08-22  David Malcolm  <dmalcolm@redhat.com>
+
 	* rtl.h (rebuild_jump_labels): Strengthen param "f" from rtx to
 	rtx_insn *.
 	(rebuild_jump_labels_chain): Likewise for param "chain".

gcc/loop-doloop.c

@@ -261,7 +261,7 @@ static bool
 doloop_valid_p (struct loop *loop, struct niter_desc *desc)
 {
   basic_block *body = get_loop_body (loop), bb;
-  rtx insn;
+  rtx_insn *insn;
   unsigned i;
   bool result = true;
 
@@ -336,7 +336,8 @@ cleanup:
 static bool
 add_test (rtx cond, edge *e, basic_block dest)
 {
-  rtx seq, jump, label;
+  rtx_insn *seq, *jump;
+  rtx label;
   enum machine_mode mode;
   rtx op0 = XEXP (cond, 0), op1 = XEXP (cond, 1);
   enum rtx_code code = GET_CODE (cond);
@@ -401,8 +402,8 @@ doloop_modify (struct loop *loop, struct niter_desc *desc,
 {
   rtx counter_reg;
   rtx tmp, noloop = NULL_RTX;
-  rtx sequence;
-  rtx jump_insn;
+  rtx_insn *sequence;
+  rtx_insn *jump_insn;
   rtx jump_label;
   int nonneg = 0;
   bool increment_count;