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99b4f3a2 | 1 | /* Unit tests for RTL-handling. |
2 | Copyright (C) 2015-2016 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "coretypes.h" | |
23 | #include "tm.h" | |
24 | #include "opts.h" | |
25 | #include "signop.h" | |
26 | #include "hash-set.h" | |
27 | #include "fixed-value.h" | |
28 | #include "alias.h" | |
29 | #include "flags.h" | |
30 | #include "symtab.h" | |
31 | #include "tree-core.h" | |
32 | #include "stor-layout.h" | |
33 | #include "tree.h" | |
34 | #include "stringpool.h" | |
35 | #include "stor-layout.h" | |
36 | #include "rtl.h" | |
37 | #include "pretty-print.h" | |
38 | #include "cfgbuild.h" | |
39 | #include "print-rtl.h" | |
40 | #include "selftest.h" | |
41 | #include "function.h" | |
ad7b10a2 | 42 | #include "memmodel.h" |
99b4f3a2 | 43 | #include "emit-rtl.h" |
44 | ||
45 | #if CHECKING_P | |
46 | ||
47 | namespace selftest { | |
48 | ||
49 | /* Verify that PAT is printed as EXPECTED. Helper function for | |
50 | selftests. */ | |
51 | ||
52 | static void | |
53 | verify_print_pattern (const char *expected, rtx pat) | |
54 | { | |
55 | pretty_printer pp; | |
56 | print_pattern (&pp, pat, 1); | |
57 | ASSERT_STREQ (expected, pp_formatted_text (&pp)); | |
58 | } | |
59 | ||
90a524f2 | 60 | /* Verify that X is dumped as EXPECTED_DUMP, using compact mode. |
61 | Use LOC as the effective location when reporting errors. */ | |
62 | ||
63 | static void | |
64 | assert_rtl_dump_eq (const location &loc, const char *expected_dump, rtx x) | |
65 | { | |
66 | named_temp_file tmp_out (".rtl"); | |
67 | FILE *outfile = fopen (tmp_out.get_filename (), "w"); | |
68 | flag_compact = true; | |
69 | print_rtl (outfile, x); | |
70 | flag_compact = false; | |
71 | fclose (outfile); | |
72 | ||
73 | char *dump = read_file (SELFTEST_LOCATION, tmp_out.get_filename ()); | |
74 | ASSERT_STREQ_AT (loc, expected_dump, dump); | |
75 | free (dump); | |
76 | } | |
77 | ||
78 | /* Verify that RTX is dumped as EXPECTED_DUMP, using compact mode. */ | |
79 | ||
80 | #define ASSERT_RTL_DUMP_EQ(EXPECTED_DUMP, RTX) \ | |
81 | assert_rtl_dump_eq (SELFTEST_LOCATION, (EXPECTED_DUMP), (RTX)) | |
82 | ||
83 | /* Verify that regs are dumped as expected (in compact mode). */ | |
84 | ||
85 | static void | |
86 | test_dumping_regs () | |
87 | { | |
88 | /* Dumps of hard regs contain a target-specific name, so we don't test | |
89 | it here. */ | |
90 | ||
91 | /* Test dumping of virtual regs. The various virtual regs are inited as | |
92 | Pmode, so this is target-specific. The tests below assume DImode, so | |
93 | only run the tests for targets where Pmode is DImode. */ | |
94 | if (Pmode == DImode) | |
95 | { | |
96 | ASSERT_RTL_DUMP_EQ ("(reg:DI virtual-incoming-args)", | |
97 | virtual_incoming_args_rtx); | |
98 | ASSERT_RTL_DUMP_EQ ("(reg:DI virtual-stack-vars)", | |
99 | virtual_stack_vars_rtx); | |
100 | ASSERT_RTL_DUMP_EQ ("(reg:DI virtual-stack-dynamic)", | |
101 | virtual_stack_dynamic_rtx); | |
102 | ASSERT_RTL_DUMP_EQ ("(reg:DI virtual-outgoing-args)", | |
103 | virtual_outgoing_args_rtx); | |
104 | ASSERT_RTL_DUMP_EQ ("(reg:DI virtual-cfa)", | |
105 | virtual_cfa_rtx); | |
106 | ASSERT_RTL_DUMP_EQ ("(reg:DI virtual-preferred-stack-boundary)", | |
107 | virtual_preferred_stack_boundary_rtx); | |
108 | } | |
109 | ||
110 | /* Test dumping of non-virtual pseudos. */ | |
111 | ASSERT_RTL_DUMP_EQ ("(reg:SI %0)", | |
112 | gen_raw_REG (SImode, LAST_VIRTUAL_REGISTER + 1)); | |
113 | ASSERT_RTL_DUMP_EQ ("(reg:SI %1)", | |
114 | gen_raw_REG (SImode, LAST_VIRTUAL_REGISTER + 2)); | |
115 | } | |
116 | ||
117 | /* Verify that insns are dumped as expected (in compact mode). */ | |
118 | ||
119 | static void | |
120 | test_dumping_insns () | |
121 | { | |
122 | /* Barriers. */ | |
123 | rtx_barrier *barrier = as_a <rtx_barrier *> (rtx_alloc (BARRIER)); | |
124 | SET_NEXT_INSN (barrier) = NULL; | |
125 | ASSERT_RTL_DUMP_EQ ("(cbarrier)\n", barrier); | |
126 | ||
127 | /* Labels. */ | |
128 | rtx_insn *label = gen_label_rtx (); | |
129 | CODE_LABEL_NUMBER (label) = 42; | |
130 | ASSERT_RTL_DUMP_EQ ("(clabel 0 42 \"\")\n", label); | |
131 | ||
132 | LABEL_NAME (label)= "some_label"; | |
133 | ASSERT_RTL_DUMP_EQ ("(clabel 0 42 (\"some_label\"))\n", label); | |
134 | } | |
135 | ||
99b4f3a2 | 136 | /* Unit testing of "single_set". */ |
137 | ||
138 | static void | |
139 | test_single_set () | |
140 | { | |
141 | /* A label is not a SET. */ | |
142 | ASSERT_EQ (NULL_RTX, single_set (gen_label_rtx ())); | |
143 | ||
144 | /* An unconditional jump insn is a single SET. */ | |
145 | rtx set_pc = gen_rtx_SET (pc_rtx, | |
146 | gen_rtx_LABEL_REF (VOIDmode, | |
147 | gen_label_rtx ())); | |
148 | rtx_insn *jump_insn = emit_jump_insn (set_pc); | |
149 | ASSERT_EQ (set_pc, single_set (jump_insn)); | |
150 | ||
151 | /* etc */ | |
152 | } | |
153 | ||
154 | /* Construct an unconditional jump to a label, and verify that | |
155 | various properties of it are sane. */ | |
156 | ||
157 | static void | |
158 | test_uncond_jump () | |
159 | { | |
160 | rtx_insn *label = gen_label_rtx (); | |
161 | rtx jump_pat = gen_rtx_SET (pc_rtx, | |
162 | gen_rtx_LABEL_REF (VOIDmode, | |
163 | label)); | |
164 | ASSERT_EQ (SET, jump_pat->code); | |
165 | ASSERT_EQ (LABEL_REF, SET_SRC (jump_pat)->code); | |
c7799456 | 166 | ASSERT_EQ (label, label_ref_label (SET_SRC (jump_pat))); |
99b4f3a2 | 167 | ASSERT_EQ (PC, SET_DEST (jump_pat)->code); |
168 | ||
169 | verify_print_pattern ("pc=L0", jump_pat); | |
170 | ||
90a524f2 | 171 | ASSERT_RTL_DUMP_EQ ("(set (pc)\n" |
172 | " (label_ref 0))", | |
173 | jump_pat); | |
174 | ||
99b4f3a2 | 175 | rtx_insn *jump_insn = emit_jump_insn (jump_pat); |
176 | ASSERT_FALSE (any_condjump_p (jump_insn)); | |
177 | ASSERT_TRUE (any_uncondjump_p (jump_insn)); | |
178 | ASSERT_TRUE (pc_set (jump_insn)); | |
179 | ASSERT_TRUE (simplejump_p (jump_insn)); | |
180 | ASSERT_TRUE (onlyjump_p (jump_insn)); | |
181 | ASSERT_TRUE (control_flow_insn_p (jump_insn)); | |
90a524f2 | 182 | |
183 | ASSERT_RTL_DUMP_EQ ("(cjump_insn (set (pc)\n" | |
184 | " (label_ref 0))\n" | |
185 | " (nil))\n", | |
186 | jump_insn); | |
99b4f3a2 | 187 | } |
188 | ||
189 | /* Run all of the selftests within this file. */ | |
190 | ||
191 | void | |
192 | rtl_tests_c_tests () | |
193 | { | |
90a524f2 | 194 | test_dumping_regs (); |
195 | test_dumping_insns (); | |
99b4f3a2 | 196 | test_single_set (); |
197 | test_uncond_jump (); | |
198 | ||
199 | /* Purge state. */ | |
200 | set_first_insn (NULL); | |
201 | set_last_insn (NULL); | |
202 | } | |
203 | ||
204 | } // namespace selftest | |
205 | #endif /* #if CHECKING_P */ |