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1 : : /* A self-testing framework, for use by -fself-test.
2 : : Copyright (C) 2015-2024 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 : : #ifndef GCC_SELFTEST_H
21 : : #define GCC_SELFTEST_H
22 : :
23 : : /* The selftest code should entirely disappear in a production
24 : : configuration, hence we guard all of it with #if CHECKING_P. */
25 : :
26 : : #if CHECKING_P
27 : :
28 : : class file_cache;
29 : :
30 : : namespace selftest {
31 : :
32 : : /* A struct describing the source-location of a selftest, to make it
33 : : easier to track down failing tests. */
34 : :
35 : : class location
36 : : {
37 : : public:
38 : 30461084 : location (const char *file, int line, const char *function)
39 : 30423788 : : m_file (file), m_line (line), m_function (function) {}
40 : :
41 : : const char *m_file;
42 : : int m_line;
43 : : const char *m_function;
44 : : };
45 : :
46 : : /* A macro for use in selftests and by the ASSERT_ macros below,
47 : : constructing a selftest::location for the current source location. */
48 : :
49 : : #define SELFTEST_LOCATION \
50 : : (::selftest::location (__FILE__, __LINE__, __FUNCTION__))
51 : :
52 : : /* The entrypoint for running all tests. */
53 : :
54 : : extern void run_tests ();
55 : :
56 : : /* Record the successful outcome of some aspect of the test. */
57 : :
58 : : extern void pass (const location &loc, const char *msg);
59 : :
60 : : /* Report the failed outcome of some aspect of the test and abort. */
61 : :
62 : : extern void fail (const location &loc, const char *msg)
63 : : ATTRIBUTE_NORETURN;
64 : :
65 : : /* As "fail", but using printf-style formatted output. */
66 : :
67 : : extern void fail_formatted (const location &loc, const char *fmt, ...)
68 : : ATTRIBUTE_PRINTF_2 ATTRIBUTE_NORETURN;
69 : :
70 : : /* Implementation detail of ASSERT_STREQ. */
71 : :
72 : : extern void assert_streq (const location &loc,
73 : : const char *desc_val1, const char *desc_val2,
74 : : const char *val1, const char *val2);
75 : :
76 : : /* Implementation detail of ASSERT_STR_CONTAINS. */
77 : :
78 : : extern void assert_str_contains (const location &loc,
79 : : const char *desc_haystack,
80 : : const char *desc_needle,
81 : : const char *val_haystack,
82 : : const char *val_needle);
83 : :
84 : : /* Implementation detail of ASSERT_STR_STARTSWITH. */
85 : :
86 : : extern void assert_str_startswith (const location &loc,
87 : : const char *desc_str,
88 : : const char *desc_prefix,
89 : : const char *val_str,
90 : : const char *val_prefix);
91 : :
92 : :
93 : : /* A named temporary file for use in selftests.
94 : : Usable for writing out files, and as the base class for
95 : : temp_source_file.
96 : : The file is unlinked in the destructor.
97 : : If the file_cache is non-null, the filename is evicted from
98 : : the file_cache when the named_temp_file is destroyed. */
99 : :
100 : : class named_temp_file
101 : : {
102 : : public:
103 : : named_temp_file (const char *suffix, file_cache *fc = nullptr);
104 : : ~named_temp_file ();
105 : 12380 : const char *get_filename () const { return m_filename; }
106 : :
107 : : private:
108 : : char *m_filename;
109 : : file_cache *m_file_cache;
110 : : };
111 : :
112 : : /* A class for writing out a temporary sourcefile for use in selftests
113 : : of input handling. */
114 : :
115 : 5224 : class temp_source_file : public named_temp_file
116 : : {
117 : : public:
118 : : temp_source_file (const location &loc, const char *suffix,
119 : : const char *content, file_cache *fc = nullptr);
120 : : temp_source_file (const location &loc, const char *suffix,
121 : : const char *content, size_t sz);
122 : : };
123 : :
124 : : /* RAII-style class for avoiding introducing locale-specific differences
125 : : in strings containing localized quote marks, by temporarily overriding
126 : : the "open_quote" and "close_quote" globals to something hardcoded.
127 : :
128 : : Specifically, the C locale's values are used:
129 : : - open_quote becomes "`"
130 : : - close_quote becomes "'"
131 : : for the lifetime of the object. */
132 : :
133 : : class auto_fix_quotes
134 : : {
135 : : public:
136 : : auto_fix_quotes ();
137 : : ~auto_fix_quotes ();
138 : :
139 : : private:
140 : : const char *m_saved_open_quote;
141 : : const char *m_saved_close_quote;
142 : : };
143 : :
144 : : /* Various selftests involving location-handling require constructing a
145 : : line table and one or more line maps within it.
146 : :
147 : : For maximum test coverage we want to run these tests with a variety
148 : : of situations:
149 : : - line_table->default_range_bits: some frontends use a non-zero value
150 : : and others use zero
151 : : - the fallback modes within line-map.cc: there are various threshold
152 : : values for location_t beyond line-map.cc changes
153 : : behavior (disabling of the range-packing optimization, disabling
154 : : of column-tracking). We can exercise these by starting the line_table
155 : : at interesting values at or near these thresholds.
156 : :
157 : : The following struct describes a particular case within our test
158 : : matrix. */
159 : :
160 : : class line_table_case;
161 : :
162 : : /* A class for overriding the global "line_table" within a selftest,
163 : : restoring its value afterwards. At most one instance of this
164 : : class can exist at once, due to the need to keep the old value
165 : : of line_table as a GC root. */
166 : :
167 : : class line_table_test
168 : : {
169 : : public:
170 : : /* Default constructor. Override "line_table", using sane defaults
171 : : for the temporary line_table. */
172 : : line_table_test ();
173 : :
174 : : /* Constructor. Override "line_table", using the case described by C. */
175 : : line_table_test (const line_table_case &c);
176 : :
177 : : /* Destructor. Restore the saved line_table. */
178 : : ~line_table_test ();
179 : : };
180 : :
181 : : /* Helper function for selftests that need a function decl. */
182 : :
183 : : extern tree make_fndecl (tree return_type,
184 : : const char *name,
185 : : vec <tree> ¶m_types,
186 : : bool is_variadic = false);
187 : :
188 : : /* Run TESTCASE multiple times, once for each case in our test matrix. */
189 : :
190 : : extern void
191 : : for_each_line_table_case (void (*testcase) (const line_table_case &));
192 : :
193 : : /* Read the contents of PATH into memory, returning a 0-terminated buffer
194 : : that must be freed by the caller.
195 : : Fail (and abort) if there are any problems, with LOC as the reported
196 : : location of the failure. */
197 : :
198 : : extern char *read_file (const location &loc, const char *path);
199 : :
200 : : /* Convert a path relative to SRCDIR/gcc/testsuite/selftests
201 : : to a real path (either absolute, or relative to pwd).
202 : : The result should be freed by the caller. */
203 : :
204 : : extern char *locate_file (const char *path);
205 : :
206 : : /* The path of SRCDIR/testsuite/selftests. */
207 : :
208 : : extern const char *path_to_selftest_files;
209 : :
210 : : /* selftest::test_runner is an implementation detail of selftest::run_tests,
211 : : exposed here to allow plugins to run their own suites of tests. */
212 : :
213 : : class test_runner
214 : : {
215 : : public:
216 : : test_runner (const char *name);
217 : : ~test_runner ();
218 : :
219 : : private:
220 : : const char *m_name;
221 : : long m_start_time;
222 : : };
223 : :
224 : : /* Declarations for specific families of tests (by source file), in
225 : : alphabetical order. */
226 : : extern void attribs_cc_tests ();
227 : : extern void bitmap_cc_tests ();
228 : : extern void cgraph_cc_tests ();
229 : : extern void convert_cc_tests ();
230 : : extern void diagnostic_format_json_cc_tests ();
231 : : extern void diagnostic_show_locus_cc_tests ();
232 : : extern void digraph_cc_tests ();
233 : : extern void dumpfile_cc_tests ();
234 : : extern void edit_context_cc_tests ();
235 : : extern void et_forest_cc_tests ();
236 : : extern void fibonacci_heap_cc_tests ();
237 : : extern void fold_const_cc_tests ();
238 : : extern void function_tests_cc_tests ();
239 : : extern void gcc_urlifier_cc_tests ();
240 : : extern void ggc_tests_cc_tests ();
241 : : extern void gimple_cc_tests ();
242 : : extern void hash_map_tests_cc_tests ();
243 : : extern void hash_set_tests_cc_tests ();
244 : : extern void input_cc_tests ();
245 : : extern void json_cc_tests ();
246 : : extern void optinfo_emit_json_cc_tests ();
247 : : extern void opts_cc_tests ();
248 : : extern void ordered_hash_map_tests_cc_tests ();
249 : : extern void predict_cc_tests ();
250 : : extern void pretty_print_cc_tests ();
251 : : extern void range_tests ();
252 : : extern void range_op_tests ();
253 : : extern void relation_tests ();
254 : : extern void gimple_range_tests ();
255 : : extern void read_rtl_function_cc_tests ();
256 : : extern void rtl_tests_cc_tests ();
257 : : extern void sbitmap_cc_tests ();
258 : : extern void selftest_cc_tests ();
259 : : extern void simplify_rtx_cc_tests ();
260 : : extern void spellcheck_cc_tests ();
261 : : extern void spellcheck_tree_cc_tests ();
262 : : extern void splay_tree_cc_tests ();
263 : : extern void sreal_cc_tests ();
264 : : extern void store_merging_cc_tests ();
265 : : extern void tree_cc_tests ();
266 : : extern void tree_cfg_cc_tests ();
267 : : extern void tree_diagnostic_path_cc_tests ();
268 : : extern void tristate_cc_tests ();
269 : : extern void typed_splay_tree_cc_tests ();
270 : : extern void vec_cc_tests ();
271 : : extern void vec_perm_indices_cc_tests ();
272 : : extern void wide_int_cc_tests ();
273 : : extern void opt_suggestions_cc_tests ();
274 : : extern void dbgcnt_cc_tests ();
275 : : extern void ipa_modref_tree_cc_tests ();
276 : :
277 : : extern int num_passes;
278 : :
279 : : } /* end of namespace selftest. */
280 : :
281 : : /* Macros for writing tests. */
282 : :
283 : : /* Evaluate EXPR and coerce to bool, calling
284 : : ::selftest::pass if it is true,
285 : : ::selftest::fail if it false. */
286 : :
287 : : #define ASSERT_TRUE(EXPR) \
288 : : ASSERT_TRUE_AT (SELFTEST_LOCATION, (EXPR))
289 : :
290 : : /* Like ASSERT_TRUE, but treat LOC as the effective location of the
291 : : selftest. */
292 : :
293 : : #define ASSERT_TRUE_AT(LOC, EXPR) \
294 : : SELFTEST_BEGIN_STMT \
295 : : const char *desc_ = "ASSERT_TRUE (" #EXPR ")"; \
296 : : bool actual_ = (EXPR); \
297 : : if (actual_) \
298 : : ::selftest::pass ((LOC), desc_); \
299 : : else \
300 : : ::selftest::fail ((LOC), desc_); \
301 : : SELFTEST_END_STMT
302 : :
303 : : /* Evaluate EXPR and coerce to bool, calling
304 : : ::selftest::pass if it is false,
305 : : ::selftest::fail if it true. */
306 : :
307 : : #define ASSERT_FALSE(EXPR) \
308 : : ASSERT_FALSE_AT (SELFTEST_LOCATION, (EXPR))
309 : :
310 : : /* Like ASSERT_FALSE, but treat LOC as the effective location of the
311 : : selftest. */
312 : :
313 : : #define ASSERT_FALSE_AT(LOC, EXPR) \
314 : : SELFTEST_BEGIN_STMT \
315 : : const char *desc_ = "ASSERT_FALSE (" #EXPR ")"; \
316 : : bool actual_ = (EXPR); \
317 : : if (actual_) \
318 : : ::selftest::fail ((LOC), desc_); \
319 : : else \
320 : : ::selftest::pass ((LOC), desc_); \
321 : : SELFTEST_END_STMT
322 : :
323 : : /* Evaluate VAL1 and VAL2 and compare them with ==, calling
324 : : ::selftest::pass if they are equal,
325 : : ::selftest::fail if they are non-equal. */
326 : :
327 : : #define ASSERT_EQ(VAL1, VAL2) \
328 : : ASSERT_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
329 : :
330 : : /* Like ASSERT_EQ, but treat LOC as the effective location of the
331 : : selftest. */
332 : :
333 : : #define ASSERT_EQ_AT(LOC, VAL1, VAL2) \
334 : : SELFTEST_BEGIN_STMT \
335 : : const char *desc_ = "ASSERT_EQ (" #VAL1 ", " #VAL2 ")"; \
336 : : if ((VAL1) == (VAL2)) \
337 : : ::selftest::pass ((LOC), desc_); \
338 : : else \
339 : : ::selftest::fail ((LOC), desc_); \
340 : : SELFTEST_END_STMT
341 : :
342 : : /* Evaluate VAL1 and VAL2 and compare them with known_eq, calling
343 : : ::selftest::pass if they are always equal,
344 : : ::selftest::fail if they might be non-equal. */
345 : :
346 : : #define ASSERT_KNOWN_EQ(VAL1, VAL2) \
347 : : ASSERT_KNOWN_EQ_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
348 : :
349 : : /* Like ASSERT_KNOWN_EQ, but treat LOC as the effective location of the
350 : : selftest. */
351 : :
352 : : #define ASSERT_KNOWN_EQ_AT(LOC, VAL1, VAL2) \
353 : : SELFTEST_BEGIN_STMT \
354 : : const char *desc = "ASSERT_KNOWN_EQ (" #VAL1 ", " #VAL2 ")"; \
355 : : if (known_eq (VAL1, VAL2)) \
356 : : ::selftest::pass ((LOC), desc); \
357 : : else \
358 : : ::selftest::fail ((LOC), desc); \
359 : : SELFTEST_END_STMT
360 : :
361 : : /* Evaluate VAL1 and VAL2 and compare them with !=, calling
362 : : ::selftest::pass if they are non-equal,
363 : : ::selftest::fail if they are equal. */
364 : :
365 : : #define ASSERT_NE(VAL1, VAL2) \
366 : : SELFTEST_BEGIN_STMT \
367 : : const char *desc_ = "ASSERT_NE (" #VAL1 ", " #VAL2 ")"; \
368 : : if ((VAL1) != (VAL2)) \
369 : : ::selftest::pass (SELFTEST_LOCATION, desc_); \
370 : : else \
371 : : ::selftest::fail (SELFTEST_LOCATION, desc_); \
372 : : SELFTEST_END_STMT
373 : :
374 : : /* Like ASSERT_NE, but treat LOC as the effective location of the
375 : : selftest. */
376 : :
377 : : #define ASSERT_NE_AT(LOC, VAL1, VAL2) \
378 : : SELFTEST_BEGIN_STMT \
379 : : const char *desc_ = "ASSERT_NE (" #VAL1 ", " #VAL2 ")"; \
380 : : if ((VAL1) != (VAL2)) \
381 : : ::selftest::pass ((LOC), desc_); \
382 : : else \
383 : : ::selftest::fail ((LOC), desc_); \
384 : : SELFTEST_END_STMT
385 : :
386 : : /* Evaluate VAL1 and VAL2 and compare them with maybe_ne, calling
387 : : ::selftest::pass if they might be non-equal,
388 : : ::selftest::fail if they are known to be equal. */
389 : :
390 : : #define ASSERT_MAYBE_NE(VAL1, VAL2) \
391 : : ASSERT_MAYBE_NE_AT ((SELFTEST_LOCATION), (VAL1), (VAL2))
392 : :
393 : : /* Like ASSERT_MAYBE_NE, but treat LOC as the effective location of the
394 : : selftest. */
395 : :
396 : : #define ASSERT_MAYBE_NE_AT(LOC, VAL1, VAL2) \
397 : : SELFTEST_BEGIN_STMT \
398 : : const char *desc = "ASSERT_MAYBE_NE (" #VAL1 ", " #VAL2 ")"; \
399 : : if (maybe_ne (VAL1, VAL2)) \
400 : : ::selftest::pass ((LOC), desc); \
401 : : else \
402 : : ::selftest::fail ((LOC), desc); \
403 : : SELFTEST_END_STMT
404 : :
405 : : /* Evaluate LHS and RHS and compare them with >, calling
406 : : ::selftest::pass if LHS > RHS,
407 : : ::selftest::fail otherwise. */
408 : :
409 : : #define ASSERT_GT(LHS, RHS) \
410 : : ASSERT_GT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
411 : :
412 : : /* Like ASSERT_GT, but treat LOC as the effective location of the
413 : : selftest. */
414 : :
415 : : #define ASSERT_GT_AT(LOC, LHS, RHS) \
416 : : SELFTEST_BEGIN_STMT \
417 : : const char *desc_ = "ASSERT_GT (" #LHS ", " #RHS ")"; \
418 : : if ((LHS) > (RHS)) \
419 : : ::selftest::pass ((LOC), desc_); \
420 : : else \
421 : : ::selftest::fail ((LOC), desc_); \
422 : : SELFTEST_END_STMT
423 : :
424 : : /* Evaluate LHS and RHS and compare them with <, calling
425 : : ::selftest::pass if LHS < RHS,
426 : : ::selftest::fail otherwise. */
427 : :
428 : : #define ASSERT_LT(LHS, RHS) \
429 : : ASSERT_LT_AT ((SELFTEST_LOCATION), (LHS), (RHS))
430 : :
431 : : /* Like ASSERT_LT, but treat LOC as the effective location of the
432 : : selftest. */
433 : :
434 : : #define ASSERT_LT_AT(LOC, LHS, RHS) \
435 : : SELFTEST_BEGIN_STMT \
436 : : const char *desc_ = "ASSERT_LT (" #LHS ", " #RHS ")"; \
437 : : if ((LHS) < (RHS)) \
438 : : ::selftest::pass ((LOC), desc_); \
439 : : else \
440 : : ::selftest::fail ((LOC), desc_); \
441 : : SELFTEST_END_STMT
442 : :
443 : : /* Evaluate VAL1 and VAL2 and compare them with strcmp, calling
444 : : ::selftest::pass if they are equal (and both are non-NULL),
445 : : ::selftest::fail if they are non-equal, or are both NULL. */
446 : :
447 : : #define ASSERT_STREQ(VAL1, VAL2) \
448 : : SELFTEST_BEGIN_STMT \
449 : : ::selftest::assert_streq (SELFTEST_LOCATION, #VAL1, #VAL2, \
450 : : (VAL1), (VAL2)); \
451 : : SELFTEST_END_STMT
452 : :
453 : : /* Like ASSERT_STREQ, but treat LOC as the effective location of the
454 : : selftest. */
455 : :
456 : : #define ASSERT_STREQ_AT(LOC, VAL1, VAL2) \
457 : : SELFTEST_BEGIN_STMT \
458 : : ::selftest::assert_streq ((LOC), #VAL1, #VAL2, \
459 : : (VAL1), (VAL2)); \
460 : : SELFTEST_END_STMT
461 : :
462 : : /* Evaluate HAYSTACK and NEEDLE and use strstr to determine if NEEDLE
463 : : is within HAYSTACK.
464 : : ::selftest::pass if NEEDLE is found.
465 : : ::selftest::fail if it is not found. */
466 : :
467 : : #define ASSERT_STR_CONTAINS(HAYSTACK, NEEDLE) \
468 : : SELFTEST_BEGIN_STMT \
469 : : ::selftest::assert_str_contains (SELFTEST_LOCATION, #HAYSTACK, #NEEDLE, \
470 : : (HAYSTACK), (NEEDLE)); \
471 : : SELFTEST_END_STMT
472 : :
473 : : /* Like ASSERT_STR_CONTAINS, but treat LOC as the effective location of the
474 : : selftest. */
475 : :
476 : : #define ASSERT_STR_CONTAINS_AT(LOC, HAYSTACK, NEEDLE) \
477 : : SELFTEST_BEGIN_STMT \
478 : : ::selftest::assert_str_contains (LOC, #HAYSTACK, #NEEDLE, \
479 : : (HAYSTACK), (NEEDLE)); \
480 : : SELFTEST_END_STMT
481 : :
482 : : /* Evaluate STR and PREFIX and determine if STR starts with PREFIX.
483 : : ::selftest::pass if STR does start with PREFIX.
484 : : ::selftest::fail if does not, or either is NULL. */
485 : :
486 : : #define ASSERT_STR_STARTSWITH(STR, PREFIX) \
487 : : SELFTEST_BEGIN_STMT \
488 : : ::selftest::assert_str_startswith (SELFTEST_LOCATION, #STR, #PREFIX, \
489 : : (STR), (PREFIX)); \
490 : : SELFTEST_END_STMT
491 : :
492 : : /* Evaluate PRED1 (VAL1), calling ::selftest::pass if it is true,
493 : : ::selftest::fail if it is false. */
494 : :
495 : : #define ASSERT_PRED1(PRED1, VAL1) \
496 : : SELFTEST_BEGIN_STMT \
497 : : const char *desc_ = "ASSERT_PRED1 (" #PRED1 ", " #VAL1 ")"; \
498 : : bool actual_ = (PRED1) (VAL1); \
499 : : if (actual_) \
500 : : ::selftest::pass (SELFTEST_LOCATION, desc_); \
501 : : else \
502 : : ::selftest::fail (SELFTEST_LOCATION, desc_); \
503 : : SELFTEST_END_STMT
504 : :
505 : : #define SELFTEST_BEGIN_STMT do {
506 : : #define SELFTEST_END_STMT } while (0)
507 : :
508 : : #endif /* #if CHECKING_P */
509 : :
510 : : #endif /* GCC_SELFTEST_H */
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