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