asan.c: strengthen some rtx locals

gcc/
2014-08-21  David Malcolm  <dmalcolm@redhat.com>

	* asan.c (asan_clear_shadow): Strengthen locals "insn", "insns"
	and "jump" from rtx to rtx_insn *.  Strengthen local "top_label"
	from rtx to rtx_code_label *.

From-SVN: r214284

gcc/ChangeLog

 2014-08-21  David Malcolm  <dmalcolm@redhat.com>
 
+	* asan.c (asan_clear_shadow): Strengthen locals "insn", "insns"
+	and "jump" from rtx to rtx_insn *.  Strengthen local "top_label"
+	from rtx to rtx_code_label *.
+
+2014-08-21  David Malcolm  <dmalcolm@redhat.com>
+
 	* alias.c (init_alias_analysis): Strengthen local "insn" from rtx
 	to rtx_insn *.
 

gcc/asan.c

@@ -919,7 +919,9 @@ asan_shadow_cst (unsigned char shadow_bytes[4])
 static void
 asan_clear_shadow (rtx shadow_mem, HOST_WIDE_INT len)
 {
-  rtx insn, insns, top_label, end, addr, tmp, jump;
+  rtx_insn *insn, *insns, *jump;
+  rtx_code_label *top_label;
+  rtx end, addr, tmp;
 
   start_sequence ();
   clear_storage (shadow_mem, GEN_INT (len), BLOCK_OP_NORMAL);