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decl.c, [...]: Remove redundant enum from machine_mode.
[thirdparty/gcc.git] / gcc / tsan.c
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32b4b7f5 1/* GCC instrumentation plugin for ThreadSanitizer.
23a5b65a 2 Copyright (C) 2011-2014 Free Software Foundation, Inc.
32b4b7f5
DV		 3 Contributed by Dmitry Vyukov <dvyukov@google.com>
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3. If not see
19<http://www.gnu.org/licenses/>. */
20
21
22#include "config.h"
23#include "system.h"
24#include "coretypes.h"
25#include "tree.h"
d8a2d370 26#include "expr.h"
32b4b7f5
DV		 27#include "intl.h"
28#include "tm.h"
60393bbc
AM		 29#include "predict.h"
30#include "vec.h"
31#include "hashtab.h"
32#include "hash-set.h"
33#include "machmode.h"
34#include "hard-reg-set.h"
35#include "input.h"
36#include "function.h"
37#include "dominance.h"
38#include "cfg.h"
32b4b7f5 39#include "basic-block.h"
2fb9a547
AM		 40#include "tree-ssa-alias.h"
41#include "internal-fn.h"
42#include "gimple-expr.h"
43#include "is-a.h"
18f429e2 44#include "gimple.h"
45b0be94 45#include "gimplify.h"
5be5c238 46#include "gimple-iterator.h"
442b4905 47#include "gimple-ssa.h"
c582198b
AM		 48#include "hash-map.h"
49#include "plugin-api.h"
50#include "ipa-ref.h"
442b4905
AM		 51#include "cgraph.h"
52#include "tree-cfg.h"
d8a2d370 53#include "stringpool.h"
442b4905 54#include "tree-ssanames.h"
32b4b7f5
DV		 55#include "tree-pass.h"
56#include "tree-iterator.h"
57#include "langhooks.h"
58#include "output.h"
59#include "options.h"
60#include "target.h"
32b4b7f5 61#include "diagnostic.h"
c954bddd 62#include "tree-ssa-propagate.h"
0e668eaf
JJ		 63#include "tsan.h"
64#include "asan.h"
32b4b7f5
DV		 65
66/* Number of instrumented memory accesses in the current function. */
67
68/* Builds the following decl
69 void __tsan_read/writeX (void *addr); */
70
71static tree
72get_memory_access_decl (bool is_write, unsigned size)
73{
74 enum built_in_function fcode;
75
76 if (size <= 1)
0e668eaf
JJ		 77 fcode = is_write ? BUILT_IN_TSAN_WRITE1
78 : BUILT_IN_TSAN_READ1;
32b4b7f5 79 else if (size <= 3)
0e668eaf
JJ		 80 fcode = is_write ? BUILT_IN_TSAN_WRITE2
81 : BUILT_IN_TSAN_READ2;
32b4b7f5 82 else if (size <= 7)
0e668eaf
JJ		 83 fcode = is_write ? BUILT_IN_TSAN_WRITE4
84 : BUILT_IN_TSAN_READ4;
32b4b7f5 85 else if (size <= 15)
0e668eaf
JJ		 86 fcode = is_write ? BUILT_IN_TSAN_WRITE8
87 : BUILT_IN_TSAN_READ8;
32b4b7f5 88 else
0e668eaf
JJ		 89 fcode = is_write ? BUILT_IN_TSAN_WRITE16
90 : BUILT_IN_TSAN_READ16;
32b4b7f5
DV		 91
92 return builtin_decl_implicit (fcode);
93}
94
95/* Check as to whether EXPR refers to a store to vptr. */
96
97static tree
98is_vptr_store (gimple stmt, tree expr, bool is_write)
99{
100 if (is_write == true
101 && gimple_assign_single_p (stmt)
102 && TREE_CODE (expr) == COMPONENT_REF)
103 {
104 tree field = TREE_OPERAND (expr, 1);
105 if (TREE_CODE (field) == FIELD_DECL
106 && DECL_VIRTUAL_P (field))
107 return gimple_assign_rhs1 (stmt);
108 }
109 return NULL;
110}
111
32b4b7f5 112/* Instruments EXPR if needed. If any instrumentation is inserted,
8ddf5c28 113 return true. */
32b4b7f5
DV		 114
115static bool
116instrument_expr (gimple_stmt_iterator gsi, tree expr, bool is_write)
117{
5c972fb6 118 tree base, rhs, expr_ptr, builtin_decl;
32b4b7f5
DV		 119 basic_block bb;
120 HOST_WIDE_INT size;
121 gimple stmt, g;
5c972fb6 122 gimple_seq seq;
32b4b7f5
DV		 123 location_t loc;
124
32b4b7f5
DV		 125 size = int_size_in_bytes (TREE_TYPE (expr));
126 if (size == -1)
127 return false;
128
129 /* For now just avoid instrumenting bit field acceses.
130 TODO: handle bit-fields as if touching the whole field. */
131 HOST_WIDE_INT bitsize, bitpos;
132 tree offset;
ef4bddc2 133 machine_mode mode;
32b4b7f5 134 int volatilep = 0, unsignedp = 0;
7a36dc06 135 base = get_inner_reference (expr, &bitsize, &bitpos, &offset,
b3ecff82 136 &mode, &unsignedp, &volatilep, false);
7a36dc06
JJ		 137
138 /* No need to instrument accesses to decls that don't escape,
139 they can't escape to other threads then. */
140 if (DECL_P (base))
141 {
142 struct pt_solution pt;
143 memset (&pt, 0, sizeof (pt));
144 pt.escaped = 1;
145 pt.ipa_escaped = flag_ipa_pta != 0;
146 pt.nonlocal = 1;
147 if (!pt_solution_includes (&pt, base))
148 return false;
149 if (!is_global_var (base) && !may_be_aliased (base))
150 return false;
151 }
152
abc27962
JJ		 153 if (TREE_READONLY (base)
154 || (TREE_CODE (base) == VAR_DECL
155 && DECL_HARD_REGISTER (base)))
32b4b7f5
DV		 156 return false;
157
829d0168
MP		 158 if (size == 0
159 || bitpos % (size * BITS_PER_UNIT)
7a36dc06 160 || bitsize != size * BITS_PER_UNIT)
32b4b7f5
DV		 161 return false;
162
163 stmt = gsi_stmt (gsi);
164 loc = gimple_location (stmt);
165 rhs = is_vptr_store (stmt, expr, is_write);
166 gcc_checking_assert (rhs != NULL || is_gimple_addressable (expr));
167 expr_ptr = build_fold_addr_expr (unshare_expr (expr));
5c972fb6
JJ		 168 seq = NULL;
169 if (!is_gimple_val (expr_ptr))
32b4b7f5 170 {
5c972fb6
JJ		 171 g = gimple_build_assign (make_ssa_name (TREE_TYPE (expr_ptr), NULL),
172 expr_ptr);
173 expr_ptr = gimple_assign_lhs (g);
174 gimple_set_location (g, loc);
175 gimple_seq_add_stmt_without_update (&seq, g);
32b4b7f5 176 }
5c972fb6
JJ		 177 if (rhs == NULL)
178 g = gimple_build_call (get_memory_access_decl (is_write, size),
179 1, expr_ptr);
32b4b7f5
DV		 180 else
181 {
182 builtin_decl = builtin_decl_implicit (BUILT_IN_TSAN_VPTR_UPDATE);
183 g = gimple_build_call (builtin_decl, 1, expr_ptr);
184 }
185 gimple_set_location (g, loc);
5c972fb6 186 gimple_seq_add_stmt_without_update (&seq, g);
32b4b7f5
DV		 187 /* Instrumentation for assignment of a function result
188 must be inserted after the call. Instrumentation for
189 reads of function arguments must be inserted before the call.
190 That's because the call can contain synchronization. */
191 if (is_gimple_call (stmt) && is_write)
192 {
193 /* If the call can throw, it must be the last stmt in
194 a basic block, so the instrumented stmts need to be
8ddf5c28 195 inserted in successor bbs. */
32b4b7f5
DV		 196 if (is_ctrl_altering_stmt (stmt))
197 {
198 edge e;
199
200 bb = gsi_bb (gsi);
201 e = find_fallthru_edge (bb->succs);
202 if (e)
5c972fb6 203 gsi_insert_seq_on_edge_immediate (e, seq);
32b4b7f5
DV		 204 }
205 else
5c972fb6 206 gsi_insert_seq_after (&gsi, seq, GSI_NEW_STMT);
32b4b7f5
DV		 207 }
208 else
5c972fb6 209 gsi_insert_seq_before (&gsi, seq, GSI_SAME_STMT);
32b4b7f5
DV		 210
211 return true;
212}
213
c954bddd
JJ		 214/* Actions for sync/atomic builtin transformations. */
215enum tsan_atomic_action
216{
217 check_last, add_seq_cst, add_acquire, weak_cas, strong_cas,
218 bool_cas, val_cas, lock_release, fetch_op, fetch_op_seq_cst
219};
220
221/* Table how to map sync/atomic builtins to their corresponding
222 tsan equivalents. */
34c136b6 223static const struct tsan_map_atomic
c954bddd
JJ		 224{
225 enum built_in_function fcode, tsan_fcode;
226 enum tsan_atomic_action action;
227 enum tree_code code;
228} tsan_atomic_table[] =
229{
230#define TRANSFORM(fcode, tsan_fcode, action, code) \
231 { BUILT_IN_##fcode, BUILT_IN_##tsan_fcode, action, code }
232#define CHECK_LAST(fcode, tsan_fcode) \
233 TRANSFORM (fcode, tsan_fcode, check_last, ERROR_MARK)
234#define ADD_SEQ_CST(fcode, tsan_fcode) \
235 TRANSFORM (fcode, tsan_fcode, add_seq_cst, ERROR_MARK)
236#define ADD_ACQUIRE(fcode, tsan_fcode) \
237 TRANSFORM (fcode, tsan_fcode, add_acquire, ERROR_MARK)
238#define WEAK_CAS(fcode, tsan_fcode) \
239 TRANSFORM (fcode, tsan_fcode, weak_cas, ERROR_MARK)
240#define STRONG_CAS(fcode, tsan_fcode) \
241 TRANSFORM (fcode, tsan_fcode, strong_cas, ERROR_MARK)
242#define BOOL_CAS(fcode, tsan_fcode) \
243 TRANSFORM (fcode, tsan_fcode, bool_cas, ERROR_MARK)
244#define VAL_CAS(fcode, tsan_fcode) \
245 TRANSFORM (fcode, tsan_fcode, val_cas, ERROR_MARK)
246#define LOCK_RELEASE(fcode, tsan_fcode) \
247 TRANSFORM (fcode, tsan_fcode, lock_release, ERROR_MARK)
248#define FETCH_OP(fcode, tsan_fcode, code) \
249 TRANSFORM (fcode, tsan_fcode, fetch_op, code)
250#define FETCH_OPS(fcode, tsan_fcode, code) \
251 TRANSFORM (fcode, tsan_fcode, fetch_op_seq_cst, code)
252
253 CHECK_LAST (ATOMIC_LOAD_1, TSAN_ATOMIC8_LOAD),
254 CHECK_LAST (ATOMIC_LOAD_2, TSAN_ATOMIC16_LOAD),
255 CHECK_LAST (ATOMIC_LOAD_4, TSAN_ATOMIC32_LOAD),
256 CHECK_LAST (ATOMIC_LOAD_8, TSAN_ATOMIC64_LOAD),
257 CHECK_LAST (ATOMIC_LOAD_16, TSAN_ATOMIC128_LOAD),
258 CHECK_LAST (ATOMIC_STORE_1, TSAN_ATOMIC8_STORE),
259 CHECK_LAST (ATOMIC_STORE_2, TSAN_ATOMIC16_STORE),
260 CHECK_LAST (ATOMIC_STORE_4, TSAN_ATOMIC32_STORE),
261 CHECK_LAST (ATOMIC_STORE_8, TSAN_ATOMIC64_STORE),
262 CHECK_LAST (ATOMIC_STORE_16, TSAN_ATOMIC128_STORE),
263 CHECK_LAST (ATOMIC_EXCHANGE_1, TSAN_ATOMIC8_EXCHANGE),
264 CHECK_LAST (ATOMIC_EXCHANGE_2, TSAN_ATOMIC16_EXCHANGE),
265 CHECK_LAST (ATOMIC_EXCHANGE_4, TSAN_ATOMIC32_EXCHANGE),
266 CHECK_LAST (ATOMIC_EXCHANGE_8, TSAN_ATOMIC64_EXCHANGE),
267 CHECK_LAST (ATOMIC_EXCHANGE_16, TSAN_ATOMIC128_EXCHANGE),
268 CHECK_LAST (ATOMIC_FETCH_ADD_1, TSAN_ATOMIC8_FETCH_ADD),
269 CHECK_LAST (ATOMIC_FETCH_ADD_2, TSAN_ATOMIC16_FETCH_ADD),
270 CHECK_LAST (ATOMIC_FETCH_ADD_4, TSAN_ATOMIC32_FETCH_ADD),
271 CHECK_LAST (ATOMIC_FETCH_ADD_8, TSAN_ATOMIC64_FETCH_ADD),
272 CHECK_LAST (ATOMIC_FETCH_ADD_16, TSAN_ATOMIC128_FETCH_ADD),
273 CHECK_LAST (ATOMIC_FETCH_SUB_1, TSAN_ATOMIC8_FETCH_SUB),
274 CHECK_LAST (ATOMIC_FETCH_SUB_2, TSAN_ATOMIC16_FETCH_SUB),
275 CHECK_LAST (ATOMIC_FETCH_SUB_4, TSAN_ATOMIC32_FETCH_SUB),
276 CHECK_LAST (ATOMIC_FETCH_SUB_8, TSAN_ATOMIC64_FETCH_SUB),
277 CHECK_LAST (ATOMIC_FETCH_SUB_16, TSAN_ATOMIC128_FETCH_SUB),
278 CHECK_LAST (ATOMIC_FETCH_AND_1, TSAN_ATOMIC8_FETCH_AND),
279 CHECK_LAST (ATOMIC_FETCH_AND_2, TSAN_ATOMIC16_FETCH_AND),
280 CHECK_LAST (ATOMIC_FETCH_AND_4, TSAN_ATOMIC32_FETCH_AND),
281 CHECK_LAST (ATOMIC_FETCH_AND_8, TSAN_ATOMIC64_FETCH_AND),
282 CHECK_LAST (ATOMIC_FETCH_AND_16, TSAN_ATOMIC128_FETCH_AND),
283 CHECK_LAST (ATOMIC_FETCH_OR_1, TSAN_ATOMIC8_FETCH_OR),
284 CHECK_LAST (ATOMIC_FETCH_OR_2, TSAN_ATOMIC16_FETCH_OR),
285 CHECK_LAST (ATOMIC_FETCH_OR_4, TSAN_ATOMIC32_FETCH_OR),
286 CHECK_LAST (ATOMIC_FETCH_OR_8, TSAN_ATOMIC64_FETCH_OR),
287 CHECK_LAST (ATOMIC_FETCH_OR_16, TSAN_ATOMIC128_FETCH_OR),
288 CHECK_LAST (ATOMIC_FETCH_XOR_1, TSAN_ATOMIC8_FETCH_XOR),
289 CHECK_LAST (ATOMIC_FETCH_XOR_2, TSAN_ATOMIC16_FETCH_XOR),
290 CHECK_LAST (ATOMIC_FETCH_XOR_4, TSAN_ATOMIC32_FETCH_XOR),
291 CHECK_LAST (ATOMIC_FETCH_XOR_8, TSAN_ATOMIC64_FETCH_XOR),
292 CHECK_LAST (ATOMIC_FETCH_XOR_16, TSAN_ATOMIC128_FETCH_XOR),
293 CHECK_LAST (ATOMIC_FETCH_NAND_1, TSAN_ATOMIC8_FETCH_NAND),
294 CHECK_LAST (ATOMIC_FETCH_NAND_2, TSAN_ATOMIC16_FETCH_NAND),
295 CHECK_LAST (ATOMIC_FETCH_NAND_4, TSAN_ATOMIC32_FETCH_NAND),
296 CHECK_LAST (ATOMIC_FETCH_NAND_8, TSAN_ATOMIC64_FETCH_NAND),
297 CHECK_LAST (ATOMIC_FETCH_NAND_16, TSAN_ATOMIC128_FETCH_NAND),
298
299 CHECK_LAST (ATOMIC_THREAD_FENCE, TSAN_ATOMIC_THREAD_FENCE),
300 CHECK_LAST (ATOMIC_SIGNAL_FENCE, TSAN_ATOMIC_SIGNAL_FENCE),
301
302 FETCH_OP (ATOMIC_ADD_FETCH_1, TSAN_ATOMIC8_FETCH_ADD, PLUS_EXPR),
303 FETCH_OP (ATOMIC_ADD_FETCH_2, TSAN_ATOMIC16_FETCH_ADD, PLUS_EXPR),
304 FETCH_OP (ATOMIC_ADD_FETCH_4, TSAN_ATOMIC32_FETCH_ADD, PLUS_EXPR),
305 FETCH_OP (ATOMIC_ADD_FETCH_8, TSAN_ATOMIC64_FETCH_ADD, PLUS_EXPR),
306 FETCH_OP (ATOMIC_ADD_FETCH_16, TSAN_ATOMIC128_FETCH_ADD, PLUS_EXPR),
307 FETCH_OP (ATOMIC_SUB_FETCH_1, TSAN_ATOMIC8_FETCH_SUB, MINUS_EXPR),
308 FETCH_OP (ATOMIC_SUB_FETCH_2, TSAN_ATOMIC16_FETCH_SUB, MINUS_EXPR),
309 FETCH_OP (ATOMIC_SUB_FETCH_4, TSAN_ATOMIC32_FETCH_SUB, MINUS_EXPR),
310 FETCH_OP (ATOMIC_SUB_FETCH_8, TSAN_ATOMIC64_FETCH_SUB, MINUS_EXPR),
311 FETCH_OP (ATOMIC_SUB_FETCH_16, TSAN_ATOMIC128_FETCH_SUB, MINUS_EXPR),
312 FETCH_OP (ATOMIC_AND_FETCH_1, TSAN_ATOMIC8_FETCH_AND, BIT_AND_EXPR),
313 FETCH_OP (ATOMIC_AND_FETCH_2, TSAN_ATOMIC16_FETCH_AND, BIT_AND_EXPR),
314 FETCH_OP (ATOMIC_AND_FETCH_4, TSAN_ATOMIC32_FETCH_AND, BIT_AND_EXPR),
315 FETCH_OP (ATOMIC_AND_FETCH_8, TSAN_ATOMIC64_FETCH_AND, BIT_AND_EXPR),
316 FETCH_OP (ATOMIC_AND_FETCH_16, TSAN_ATOMIC128_FETCH_AND, BIT_AND_EXPR),
317 FETCH_OP (ATOMIC_OR_FETCH_1, TSAN_ATOMIC8_FETCH_OR, BIT_IOR_EXPR),
318 FETCH_OP (ATOMIC_OR_FETCH_2, TSAN_ATOMIC16_FETCH_OR, BIT_IOR_EXPR),
319 FETCH_OP (ATOMIC_OR_FETCH_4, TSAN_ATOMIC32_FETCH_OR, BIT_IOR_EXPR),
320 FETCH_OP (ATOMIC_OR_FETCH_8, TSAN_ATOMIC64_FETCH_OR, BIT_IOR_EXPR),
321 FETCH_OP (ATOMIC_OR_FETCH_16, TSAN_ATOMIC128_FETCH_OR, BIT_IOR_EXPR),
322 FETCH_OP (ATOMIC_XOR_FETCH_1, TSAN_ATOMIC8_FETCH_XOR, BIT_XOR_EXPR),
323 FETCH_OP (ATOMIC_XOR_FETCH_2, TSAN_ATOMIC16_FETCH_XOR, BIT_XOR_EXPR),
324 FETCH_OP (ATOMIC_XOR_FETCH_4, TSAN_ATOMIC32_FETCH_XOR, BIT_XOR_EXPR),
325 FETCH_OP (ATOMIC_XOR_FETCH_8, TSAN_ATOMIC64_FETCH_XOR, BIT_XOR_EXPR),
326 FETCH_OP (ATOMIC_XOR_FETCH_16, TSAN_ATOMIC128_FETCH_XOR, BIT_XOR_EXPR),
327 FETCH_OP (ATOMIC_NAND_FETCH_1, TSAN_ATOMIC8_FETCH_NAND, BIT_NOT_EXPR),
328 FETCH_OP (ATOMIC_NAND_FETCH_2, TSAN_ATOMIC16_FETCH_NAND, BIT_NOT_EXPR),
329 FETCH_OP (ATOMIC_NAND_FETCH_4, TSAN_ATOMIC32_FETCH_NAND, BIT_NOT_EXPR),
330 FETCH_OP (ATOMIC_NAND_FETCH_8, TSAN_ATOMIC64_FETCH_NAND, BIT_NOT_EXPR),
331 FETCH_OP (ATOMIC_NAND_FETCH_16, TSAN_ATOMIC128_FETCH_NAND, BIT_NOT_EXPR),
332
333 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_1, TSAN_ATOMIC8_EXCHANGE),
334 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_2, TSAN_ATOMIC16_EXCHANGE),
335 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_4, TSAN_ATOMIC32_EXCHANGE),
336 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_8, TSAN_ATOMIC64_EXCHANGE),
337 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_16, TSAN_ATOMIC128_EXCHANGE),
338
339 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_1, TSAN_ATOMIC8_FETCH_ADD),
340 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_2, TSAN_ATOMIC16_FETCH_ADD),
341 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_4, TSAN_ATOMIC32_FETCH_ADD),
342 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_8, TSAN_ATOMIC64_FETCH_ADD),
343 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_16, TSAN_ATOMIC128_FETCH_ADD),
344 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_1, TSAN_ATOMIC8_FETCH_SUB),
345 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_2, TSAN_ATOMIC16_FETCH_SUB),
346 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_4, TSAN_ATOMIC32_FETCH_SUB),
347 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_8, TSAN_ATOMIC64_FETCH_SUB),
348 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_16, TSAN_ATOMIC128_FETCH_SUB),
349 ADD_SEQ_CST (SYNC_FETCH_AND_AND_1, TSAN_ATOMIC8_FETCH_AND),
350 ADD_SEQ_CST (SYNC_FETCH_AND_AND_2, TSAN_ATOMIC16_FETCH_AND),
351 ADD_SEQ_CST (SYNC_FETCH_AND_AND_4, TSAN_ATOMIC32_FETCH_AND),
352 ADD_SEQ_CST (SYNC_FETCH_AND_AND_8, TSAN_ATOMIC64_FETCH_AND),
353 ADD_SEQ_CST (SYNC_FETCH_AND_AND_16, TSAN_ATOMIC128_FETCH_AND),
354 ADD_SEQ_CST (SYNC_FETCH_AND_OR_1, TSAN_ATOMIC8_FETCH_OR),
355 ADD_SEQ_CST (SYNC_FETCH_AND_OR_2, TSAN_ATOMIC16_FETCH_OR),
356 ADD_SEQ_CST (SYNC_FETCH_AND_OR_4, TSAN_ATOMIC32_FETCH_OR),
357 ADD_SEQ_CST (SYNC_FETCH_AND_OR_8, TSAN_ATOMIC64_FETCH_OR),
358 ADD_SEQ_CST (SYNC_FETCH_AND_OR_16, TSAN_ATOMIC128_FETCH_OR),
359 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_1, TSAN_ATOMIC8_FETCH_XOR),
360 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_2, TSAN_ATOMIC16_FETCH_XOR),
361 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_4, TSAN_ATOMIC32_FETCH_XOR),
362 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_8, TSAN_ATOMIC64_FETCH_XOR),
363 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_16, TSAN_ATOMIC128_FETCH_XOR),
364 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_1, TSAN_ATOMIC8_FETCH_NAND),
365 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_2, TSAN_ATOMIC16_FETCH_NAND),
366 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_4, TSAN_ATOMIC32_FETCH_NAND),
367 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_8, TSAN_ATOMIC64_FETCH_NAND),
368 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_16, TSAN_ATOMIC128_FETCH_NAND),
369
370 ADD_SEQ_CST (SYNC_SYNCHRONIZE, TSAN_ATOMIC_THREAD_FENCE),
371
372 FETCH_OPS (SYNC_ADD_AND_FETCH_1, TSAN_ATOMIC8_FETCH_ADD, PLUS_EXPR),
373 FETCH_OPS (SYNC_ADD_AND_FETCH_2, TSAN_ATOMIC16_FETCH_ADD, PLUS_EXPR),
374 FETCH_OPS (SYNC_ADD_AND_FETCH_4, TSAN_ATOMIC32_FETCH_ADD, PLUS_EXPR),
375 FETCH_OPS (SYNC_ADD_AND_FETCH_8, TSAN_ATOMIC64_FETCH_ADD, PLUS_EXPR),
376 FETCH_OPS (SYNC_ADD_AND_FETCH_16, TSAN_ATOMIC128_FETCH_ADD, PLUS_EXPR),
377 FETCH_OPS (SYNC_SUB_AND_FETCH_1, TSAN_ATOMIC8_FETCH_SUB, MINUS_EXPR),
378 FETCH_OPS (SYNC_SUB_AND_FETCH_2, TSAN_ATOMIC16_FETCH_SUB, MINUS_EXPR),
379 FETCH_OPS (SYNC_SUB_AND_FETCH_4, TSAN_ATOMIC32_FETCH_SUB, MINUS_EXPR),
380 FETCH_OPS (SYNC_SUB_AND_FETCH_8, TSAN_ATOMIC64_FETCH_SUB, MINUS_EXPR),
381 FETCH_OPS (SYNC_SUB_AND_FETCH_16, TSAN_ATOMIC128_FETCH_SUB, MINUS_EXPR),
382 FETCH_OPS (SYNC_AND_AND_FETCH_1, TSAN_ATOMIC8_FETCH_AND, BIT_AND_EXPR),
383 FETCH_OPS (SYNC_AND_AND_FETCH_2, TSAN_ATOMIC16_FETCH_AND, BIT_AND_EXPR),
384 FETCH_OPS (SYNC_AND_AND_FETCH_4, TSAN_ATOMIC32_FETCH_AND, BIT_AND_EXPR),
385 FETCH_OPS (SYNC_AND_AND_FETCH_8, TSAN_ATOMIC64_FETCH_AND, BIT_AND_EXPR),
386 FETCH_OPS (SYNC_AND_AND_FETCH_16, TSAN_ATOMIC128_FETCH_AND, BIT_AND_EXPR),
387 FETCH_OPS (SYNC_OR_AND_FETCH_1, TSAN_ATOMIC8_FETCH_OR, BIT_IOR_EXPR),
388 FETCH_OPS (SYNC_OR_AND_FETCH_2, TSAN_ATOMIC16_FETCH_OR, BIT_IOR_EXPR),
389 FETCH_OPS (SYNC_OR_AND_FETCH_4, TSAN_ATOMIC32_FETCH_OR, BIT_IOR_EXPR),
390 FETCH_OPS (SYNC_OR_AND_FETCH_8, TSAN_ATOMIC64_FETCH_OR, BIT_IOR_EXPR),
391 FETCH_OPS (SYNC_OR_AND_FETCH_16, TSAN_ATOMIC128_FETCH_OR, BIT_IOR_EXPR),
392 FETCH_OPS (SYNC_XOR_AND_FETCH_1, TSAN_ATOMIC8_FETCH_XOR, BIT_XOR_EXPR),
393 FETCH_OPS (SYNC_XOR_AND_FETCH_2, TSAN_ATOMIC16_FETCH_XOR, BIT_XOR_EXPR),
394 FETCH_OPS (SYNC_XOR_AND_FETCH_4, TSAN_ATOMIC32_FETCH_XOR, BIT_XOR_EXPR),
395 FETCH_OPS (SYNC_XOR_AND_FETCH_8, TSAN_ATOMIC64_FETCH_XOR, BIT_XOR_EXPR),
396 FETCH_OPS (SYNC_XOR_AND_FETCH_16, TSAN_ATOMIC128_FETCH_XOR, BIT_XOR_EXPR),
397 FETCH_OPS (SYNC_NAND_AND_FETCH_1, TSAN_ATOMIC8_FETCH_NAND, BIT_NOT_EXPR),
398 FETCH_OPS (SYNC_NAND_AND_FETCH_2, TSAN_ATOMIC16_FETCH_NAND, BIT_NOT_EXPR),
399 FETCH_OPS (SYNC_NAND_AND_FETCH_4, TSAN_ATOMIC32_FETCH_NAND, BIT_NOT_EXPR),
400 FETCH_OPS (SYNC_NAND_AND_FETCH_8, TSAN_ATOMIC64_FETCH_NAND, BIT_NOT_EXPR),
401 FETCH_OPS (SYNC_NAND_AND_FETCH_16, TSAN_ATOMIC128_FETCH_NAND, BIT_NOT_EXPR),
402
403 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_1, TSAN_ATOMIC8_COMPARE_EXCHANGE_WEAK),
404 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_2, TSAN_ATOMIC16_COMPARE_EXCHANGE_WEAK),
405 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_4, TSAN_ATOMIC32_COMPARE_EXCHANGE_WEAK),
406 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_8, TSAN_ATOMIC64_COMPARE_EXCHANGE_WEAK),
407 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_16, TSAN_ATOMIC128_COMPARE_EXCHANGE_WEAK),
408
409 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_1, TSAN_ATOMIC8_COMPARE_EXCHANGE_STRONG),
410 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_2,
411 TSAN_ATOMIC16_COMPARE_EXCHANGE_STRONG),
412 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_4,
413 TSAN_ATOMIC32_COMPARE_EXCHANGE_STRONG),
414 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_8,
415 TSAN_ATOMIC64_COMPARE_EXCHANGE_STRONG),
416 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_16,
417 TSAN_ATOMIC128_COMPARE_EXCHANGE_STRONG),
418
419 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_1,
420 TSAN_ATOMIC8_COMPARE_EXCHANGE_STRONG),
421 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_2,
422 TSAN_ATOMIC16_COMPARE_EXCHANGE_STRONG),
423 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_4,
424 TSAN_ATOMIC32_COMPARE_EXCHANGE_STRONG),
425 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_8,
426 TSAN_ATOMIC64_COMPARE_EXCHANGE_STRONG),
427 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_16,
428 TSAN_ATOMIC128_COMPARE_EXCHANGE_STRONG),
429
430 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_1, TSAN_ATOMIC8_COMPARE_EXCHANGE_STRONG),
431 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_2, TSAN_ATOMIC16_COMPARE_EXCHANGE_STRONG),
432 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_4, TSAN_ATOMIC32_COMPARE_EXCHANGE_STRONG),
433 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_8, TSAN_ATOMIC64_COMPARE_EXCHANGE_STRONG),
434 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_16,
435 TSAN_ATOMIC128_COMPARE_EXCHANGE_STRONG),
436
437 LOCK_RELEASE (SYNC_LOCK_RELEASE_1, TSAN_ATOMIC8_STORE),
438 LOCK_RELEASE (SYNC_LOCK_RELEASE_2, TSAN_ATOMIC16_STORE),
439 LOCK_RELEASE (SYNC_LOCK_RELEASE_4, TSAN_ATOMIC32_STORE),
440 LOCK_RELEASE (SYNC_LOCK_RELEASE_8, TSAN_ATOMIC64_STORE),
441 LOCK_RELEASE (SYNC_LOCK_RELEASE_16, TSAN_ATOMIC128_STORE)
442};
443
444/* Instrument an atomic builtin. */
445
446static void
447instrument_builtin_call (gimple_stmt_iterator *gsi)
448{
449 gimple stmt = gsi_stmt (*gsi), g;
450 tree callee = gimple_call_fndecl (stmt), last_arg, args[6], t, lhs;
451 enum built_in_function fcode = DECL_FUNCTION_CODE (callee);
452 unsigned int i, num = gimple_call_num_args (stmt), j;
453 for (j = 0; j < 6 && j < num; j++)
454 args[j] = gimple_call_arg (stmt, j);
455 for (i = 0; i < ARRAY_SIZE (tsan_atomic_table); i++)
456 if (fcode != tsan_atomic_table[i].fcode)
457 continue;
458 else
459 {
460 tree decl = builtin_decl_implicit (tsan_atomic_table[i].tsan_fcode);
461 if (decl == NULL_TREE)
462 return;
463 switch (tsan_atomic_table[i].action)
464 {
465 case check_last:
466 case fetch_op:
467 last_arg = gimple_call_arg (stmt, num - 1);
cc269bb6 468 if (!tree_fits_uhwi_p (last_arg)
7d362f6c 469 || tree_to_uhwi (last_arg) > MEMMODEL_SEQ_CST)
c954bddd
JJ		 470 return;
471 gimple_call_set_fndecl (stmt, decl);
472 update_stmt (stmt);
473 if (tsan_atomic_table[i].action == fetch_op)
474 {
475 args[1] = gimple_call_arg (stmt, 1);
476 goto adjust_result;
477 }
478 return;
479 case add_seq_cst:
480 case add_acquire:
481 case fetch_op_seq_cst:
482 gcc_assert (num <= 2);
483 for (j = 0; j < num; j++)
484 args[j] = gimple_call_arg (stmt, j);
485 for (; j < 2; j++)
486 args[j] = NULL_TREE;
487 args[num] = build_int_cst (NULL_TREE,
488 tsan_atomic_table[i].action
489 != add_acquire
490 ? MEMMODEL_SEQ_CST
491 : MEMMODEL_ACQUIRE);
492 update_gimple_call (gsi, decl, num + 1, args[0], args[1], args[2]);
493 stmt = gsi_stmt (*gsi);
494 if (tsan_atomic_table[i].action == fetch_op_seq_cst)
495 {
496 adjust_result:
497 lhs = gimple_call_lhs (stmt);
498 if (lhs == NULL_TREE)
499 return;
500 if (!useless_type_conversion_p (TREE_TYPE (lhs),
501 TREE_TYPE (args[1])))
502 {
503 tree var = make_ssa_name (TREE_TYPE (lhs), NULL);
504 g = gimple_build_assign_with_ops (NOP_EXPR, var,
505 args[1], NULL_TREE);
506 gsi_insert_after (gsi, g, GSI_NEW_STMT);
507 args[1] = var;
508 }
509 gimple_call_set_lhs (stmt,
510 make_ssa_name (TREE_TYPE (lhs), NULL));
511 /* BIT_NOT_EXPR stands for NAND. */
512 if (tsan_atomic_table[i].code == BIT_NOT_EXPR)
513 {
514 tree var = make_ssa_name (TREE_TYPE (lhs), NULL);
515 g = gimple_build_assign_with_ops (BIT_AND_EXPR, var,
516 gimple_call_lhs (stmt),
517 args[1]);
518 gsi_insert_after (gsi, g, GSI_NEW_STMT);
519 g = gimple_build_assign_with_ops (BIT_NOT_EXPR, lhs, var,
520 NULL_TREE);
521 }
522 else
523 g = gimple_build_assign_with_ops (tsan_atomic_table[i].code,
524 lhs,
525 gimple_call_lhs (stmt),
526 args[1]);
527 update_stmt (stmt);
528 gsi_insert_after (gsi, g, GSI_NEW_STMT);
529 }
530 return;
531 case weak_cas:
532 if (!integer_nonzerop (gimple_call_arg (stmt, 3)))
533 continue;
534 /* FALLTHRU */
535 case strong_cas:
536 gcc_assert (num == 6);
537 for (j = 0; j < 6; j++)
538 args[j] = gimple_call_arg (stmt, j);
cc269bb6 539 if (!tree_fits_uhwi_p (args[4])
7d362f6c 540 || tree_to_uhwi (args[4]) > MEMMODEL_SEQ_CST)
c954bddd 541 return;
cc269bb6 542 if (!tree_fits_uhwi_p (args[5])
7d362f6c 543 || tree_to_uhwi (args[5]) > MEMMODEL_SEQ_CST)
c954bddd
JJ		 544 return;
545 update_gimple_call (gsi, decl, 5, args[0], args[1], args[2],
546 args[4], args[5]);
547 return;
548 case bool_cas:
549 case val_cas:
550 gcc_assert (num == 3);
551 for (j = 0; j < 3; j++)
552 args[j] = gimple_call_arg (stmt, j);
553 t = TYPE_ARG_TYPES (TREE_TYPE (decl));
554 t = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (t)));
555 t = create_tmp_var (t, NULL);
556 mark_addressable (t);
557 if (!useless_type_conversion_p (TREE_TYPE (t),
558 TREE_TYPE (args[1])))
559 {
560 g = gimple_build_assign_with_ops (NOP_EXPR,
561 make_ssa_name (TREE_TYPE (t),
562 NULL),
563 args[1], NULL_TREE);
564 gsi_insert_before (gsi, g, GSI_SAME_STMT);
565 args[1] = gimple_assign_lhs (g);
566 }
567 g = gimple_build_assign (t, args[1]);
568 gsi_insert_before (gsi, g, GSI_SAME_STMT);
569 lhs = gimple_call_lhs (stmt);
570 update_gimple_call (gsi, decl, 5, args[0],
571 build_fold_addr_expr (t), args[2],
572 build_int_cst (NULL_TREE,
573 MEMMODEL_SEQ_CST),
574 build_int_cst (NULL_TREE,
575 MEMMODEL_SEQ_CST));
576 if (tsan_atomic_table[i].action == val_cas && lhs)
577 {
578 tree cond;
579 stmt = gsi_stmt (*gsi);
580 g = gimple_build_assign (make_ssa_name (TREE_TYPE (t), NULL),
581 t);
582 gsi_insert_after (gsi, g, GSI_NEW_STMT);
583 t = make_ssa_name (TREE_TYPE (TREE_TYPE (decl)), stmt);
584 cond = build2 (NE_EXPR, boolean_type_node, t,
585 build_int_cst (TREE_TYPE (t), 0));
586 g = gimple_build_assign_with_ops (COND_EXPR, lhs, cond,
587 args[1],
588 gimple_assign_lhs (g));
589 gimple_call_set_lhs (stmt, t);
590 update_stmt (stmt);
591 gsi_insert_after (gsi, g, GSI_NEW_STMT);
592 }
593 return;
594 case lock_release:
595 gcc_assert (num == 1);
596 t = TYPE_ARG_TYPES (TREE_TYPE (decl));
597 t = TREE_VALUE (TREE_CHAIN (t));
598 update_gimple_call (gsi, decl, 3, gimple_call_arg (stmt, 0),
599 build_int_cst (t, 0),
600 build_int_cst (NULL_TREE,
601 MEMMODEL_RELEASE));
602 return;
603 default:
604 continue;
605 }
606 }
607}
608
32b4b7f5 609/* Instruments the gimple pointed to by GSI. Return
8ddf5c28 610 true if func entry/exit should be instrumented. */
32b4b7f5
DV		 611
612static bool
c954bddd 613instrument_gimple (gimple_stmt_iterator *gsi)
32b4b7f5
DV		 614{
615 gimple stmt;
616 tree rhs, lhs;
617 bool instrumented = false;
618
c954bddd 619 stmt = gsi_stmt (*gsi);
32b4b7f5
DV		 620 if (is_gimple_call (stmt)
621 && (gimple_call_fndecl (stmt)
622 != builtin_decl_implicit (BUILT_IN_TSAN_INIT)))
c954bddd 623 {
5c944c6c 624 if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
c954bddd
JJ		 625 instrument_builtin_call (gsi);
626 return true;
627 }
8ddf5c28
JJ		 628 else if (is_gimple_assign (stmt)
629 && !gimple_clobber_p (stmt))
32b4b7f5
DV		 630 {
631 if (gimple_store_p (stmt))
632 {
633 lhs = gimple_assign_lhs (stmt);
c954bddd 634 instrumented = instrument_expr (*gsi, lhs, true);
32b4b7f5
DV		 635 }
636 if (gimple_assign_load_p (stmt))
637 {
638 rhs = gimple_assign_rhs1 (stmt);
c954bddd 639 instrumented = instrument_expr (*gsi, rhs, false);
32b4b7f5
DV		 640 }
641 }
642 return instrumented;
643}
644
645/* Instruments all interesting memory accesses in the current function.
8ddf5c28 646 Return true if func entry/exit should be instrumented. */
32b4b7f5
DV		 647
648static bool
649instrument_memory_accesses (void)
650{
651 basic_block bb;
652 gimple_stmt_iterator gsi;
653 bool fentry_exit_instrument = false;
654
11cd3bed 655 FOR_EACH_BB_FN (bb, cfun)
32b4b7f5 656 for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
c954bddd 657 fentry_exit_instrument |= instrument_gimple (&gsi);
32b4b7f5
DV		 658 return fentry_exit_instrument;
659}
660
661/* Instruments function entry. */
662
663static void
664instrument_func_entry (void)
665{
666 basic_block succ_bb;
667 gimple_stmt_iterator gsi;
668 tree ret_addr, builtin_decl;
669 gimple g;
670
fefa31b5 671 succ_bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun));
32b4b7f5
DV		 672 gsi = gsi_after_labels (succ_bb);
673
674 builtin_decl = builtin_decl_implicit (BUILT_IN_RETURN_ADDRESS);
675 g = gimple_build_call (builtin_decl, 1, integer_zero_node);
676 ret_addr = make_ssa_name (ptr_type_node, NULL);
677 gimple_call_set_lhs (g, ret_addr);
678 gimple_set_location (g, cfun->function_start_locus);
679 gsi_insert_before (&gsi, g, GSI_SAME_STMT);
680
681 builtin_decl = builtin_decl_implicit (BUILT_IN_TSAN_FUNC_ENTRY);
682 g = gimple_build_call (builtin_decl, 1, ret_addr);
683 gimple_set_location (g, cfun->function_start_locus);
684 gsi_insert_before (&gsi, g, GSI_SAME_STMT);
685}
686
687/* Instruments function exits. */
688
689static void
690instrument_func_exit (void)
691{
692 location_t loc;
693 basic_block exit_bb;
694 gimple_stmt_iterator gsi;
695 gimple stmt, g;
696 tree builtin_decl;
697 edge e;
698 edge_iterator ei;
699
700 /* Find all function exits. */
fefa31b5 701 exit_bb = EXIT_BLOCK_PTR_FOR_FN (cfun);
32b4b7f5
DV		 702 FOR_EACH_EDGE (e, ei, exit_bb->preds)
703 {
704 gsi = gsi_last_bb (e->src);
705 stmt = gsi_stmt (gsi);
71c581e7
MP		 706 gcc_assert (gimple_code (stmt) == GIMPLE_RETURN
707 || gimple_call_builtin_p (stmt, BUILT_IN_RETURN));
32b4b7f5
DV		 708 loc = gimple_location (stmt);
709 builtin_decl = builtin_decl_implicit (BUILT_IN_TSAN_FUNC_EXIT);
710 g = gimple_build_call (builtin_decl, 0);
711 gimple_set_location (g, loc);
712 gsi_insert_before (&gsi, g, GSI_SAME_STMT);
713 }
714}
715
716/* ThreadSanitizer instrumentation pass. */
717
718static unsigned
719tsan_pass (void)
720{
0e668eaf 721 initialize_sanitizer_builtins ();
32b4b7f5
DV		 722 if (instrument_memory_accesses ())
723 {
724 instrument_func_entry ();
725 instrument_func_exit ();
726 }
727 return 0;
728}
729
32b4b7f5
DV		 730/* Inserts __tsan_init () into the list of CTORs. */
731
732void
733tsan_finish_file (void)
734{
0e668eaf 735 tree ctor_statements = NULL_TREE;
32b4b7f5 736
0e668eaf
JJ		 737 initialize_sanitizer_builtins ();
738 tree init_decl = builtin_decl_implicit (BUILT_IN_TSAN_INIT);
32b4b7f5
DV		 739 append_to_statement_list (build_call_expr (init_decl, 0),
740 &ctor_statements);
741 cgraph_build_static_cdtor ('I', ctor_statements,
742 MAX_RESERVED_INIT_PRIORITY - 1);
743}
744
745/* The pass descriptor. */
746
27a4cd48
DM		 747namespace {
748
749const pass_data pass_data_tsan =
32b4b7f5 750{
27a4cd48
DM		 751 GIMPLE_PASS, /* type */
752 "tsan", /* name */
753 OPTGROUP_NONE, /* optinfo_flags */
27a4cd48
DM		 754 TV_NONE, /* tv_id */
755 ( PROP_ssa | PROP_cfg ), /* properties_required */
756 0, /* properties_provided */
757 0, /* properties_destroyed */
758 0, /* todo_flags_start */
3bea341f 759 TODO_update_ssa, /* todo_flags_finish */
32b4b7f5
DV		 760};
761
27a4cd48
DM		 762class pass_tsan : public gimple_opt_pass
763{
764public:
c3284718
RS		 765 pass_tsan (gcc::context *ctxt)
766 : gimple_opt_pass (pass_data_tsan, ctxt)
27a4cd48
DM		 767 {}
768
769 /* opt_pass methods: */
65d3284b 770 opt_pass * clone () { return new pass_tsan (m_ctxt); }
1a3d085c
TS		 771 virtual bool gate (function *)
772{
773 return (flag_sanitize & SANITIZE_THREAD) != 0;
774}
775
be55bfe6 776 virtual unsigned int execute (function *) { return tsan_pass (); }
27a4cd48
DM		 777
778}; // class pass_tsan
779
780} // anon namespace
781
782gimple_opt_pass *
783make_pass_tsan (gcc::context *ctxt)
784{
785 return new pass_tsan (ctxt);
786}
787
27a4cd48
DM		 788namespace {
789
790const pass_data pass_data_tsan_O0 =
32b4b7f5 791{
27a4cd48
DM		 792 GIMPLE_PASS, /* type */
793 "tsan0", /* name */
794 OPTGROUP_NONE, /* optinfo_flags */
27a4cd48
DM		 795 TV_NONE, /* tv_id */
796 ( PROP_ssa | PROP_cfg ), /* properties_required */
797 0, /* properties_provided */
798 0, /* properties_destroyed */
799 0, /* todo_flags_start */
3bea341f 800 TODO_update_ssa, /* todo_flags_finish */
32b4b7f5 801};
27a4cd48
DM		 802
803class pass_tsan_O0 : public gimple_opt_pass
804{
805public:
c3284718
RS		 806 pass_tsan_O0 (gcc::context *ctxt)
807 : gimple_opt_pass (pass_data_tsan_O0, ctxt)
27a4cd48
DM		 808 {}
809
810 /* opt_pass methods: */
1a3d085c
TS		 811 virtual bool gate (function *)
812 {
813 return (flag_sanitize & SANITIZE_THREAD) != 0 && !optimize;
814 }
815
be55bfe6 816 virtual unsigned int execute (function *) { return tsan_pass (); }
27a4cd48
DM		 817
818}; // class pass_tsan_O0
819
820} // anon namespace
821
822gimple_opt_pass *
823make_pass_tsan_O0 (gcc::context *ctxt)
824{
825 return new pass_tsan_O0 (ctxt);
826}
Mirror of https://gcc.gnu.org/git/gcc.git