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+/* Unit tests for RTL-handling.
+ Copyright (C) 2015-2016 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "opts.h"
+#include "signop.h"
+#include "hash-set.h"
+#include "fixed-value.h"
+#include "alias.h"
+#include "flags.h"
+#include "symtab.h"
+#include "tree-core.h"
+#include "stor-layout.h"
+#include "tree.h"
+#include "stringpool.h"
+#include "stor-layout.h"
+#include "rtl.h"
+#include "pretty-print.h"
+#include "cfgbuild.h"
+#include "print-rtl.h"
+#include "selftest.h"
+#include "function.h"
+#include "emit-rtl.h"
+
+#if CHECKING_P
+
+static void
+verify_print_pattern (const char *expected, rtx pat)
+{
+ pretty_printer pp;
+ print_pattern (&pp, pat, 1);
+ ASSERT_STREQ (expected, pp_formatted_text (&pp));
+}
+
+/* Unit testing of "single_set". */
+static void
+test_single_set ()
+{
+ /* A label is not a SET. */
+ ASSERT_EQ (NULL_RTX, single_set (gen_label_rtx ()));
+
+ /* An unconditional jump insn is a single SET. */
+ rtx set_pc = gen_rtx_SET (pc_rtx,
+ gen_rtx_LABEL_REF (VOIDmode,
+ gen_label_rtx ()));
+ rtx_insn *jump_insn = emit_jump_insn (set_pc);
+ ASSERT_EQ (set_pc, single_set (jump_insn));
+
+ /* etc */
+}
+
+static void
+test_uncond_jump ()
+{
+ rtx_insn *label = gen_label_rtx ();
+ rtx jump_pat = gen_rtx_SET (pc_rtx,
+ gen_rtx_LABEL_REF (VOIDmode,
+ label));
+ ASSERT_EQ (SET, jump_pat->code);
+ ASSERT_EQ (LABEL_REF, SET_SRC (jump_pat)->code);
+ ASSERT_EQ (label, LABEL_REF_LABEL (SET_SRC (jump_pat)));
+ ASSERT_EQ (PC, SET_DEST (jump_pat)->code);
+
+ verify_print_pattern ("pc=L0", jump_pat);
+
+ rtx_insn *jump_insn = emit_jump_insn (jump_pat);
+ ASSERT_FALSE (any_condjump_p (jump_insn));
+ ASSERT_TRUE (any_uncondjump_p (jump_insn));
+ ASSERT_TRUE (pc_set (jump_insn));
+ ASSERT_TRUE (simplejump_p (jump_insn));
+ ASSERT_TRUE (onlyjump_p (jump_insn));
+ ASSERT_TRUE (control_flow_insn_p (jump_insn));
+}
+
+namespace selftest {
+
+void
+rtl_tests_c_tests ()
+{
+ test_single_set ();
+ test_uncond_jump ();
+
+ /* Purge state. */
+ set_first_insn (NULL);
+ set_last_insn (NULL);
+}
+
+} // namespace selftest
+#endif /* #if CHECKING_P */