From cc7d87f5fb452ad8e5dcb8afbd0585629ee1c277 Mon Sep 17 00:00:00 2001
From: David Malcolm <dmalcolm@redhat.com>
Date: Thu, 7 Apr 2016 16:50:05 -0400
Subject: [PATCH 39/91] FIXME: attempt to roundtrip the RTL

---
 gcc/rtl/rtl-frontend.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gcc/rtl/rtl-frontend.c b/gcc/rtl/rtl-frontend.c
index 63c7f4c..4840426 100644
--- a/gcc/rtl/rtl-frontend.c
+++ b/gcc/rtl/rtl-frontend.c
@@ -230,6 +230,8 @@ class function_reader : public rtx_reader
 
   rtx *get_insn_by_uid (int uid);
 
+  rtx_insn *get_first_insn () const { return m_first_insn; }
+
  private:
   struct uid_hash : int_hash <int, -1, -2> {};
   hash_map<uid_hash, rtx> m_insns_by_uid;
@@ -429,6 +431,10 @@ rtl_langhook_parse_file (void)
 
   reader.create_function ();
   reader.apply_fixups ();
+
+  FILE *out = fopen ("/tmp/roundtrip.rtl", "w");
+  print_rtl_with_bb (out, reader.get_first_insn (), 1024);
+  fclose (out);
 }
 
 static tree
-- 
1.8.5.3