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re PR tree-optimization/64284 (ICE: Segmentation fault)
[thirdparty/gcc.git] / gcc / tsan.c
CommitLineData
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 {
b731b390 171 g = gimple_build_assign (make_ssa_name (TREE_TYPE (expr_ptr)), expr_ptr);
5c972fb6
JJ		 172 expr_ptr = gimple_assign_lhs (g);
173 gimple_set_location (g, loc);
174 gimple_seq_add_stmt_without_update (&seq, g);
32b4b7f5 175 }
5c972fb6
JJ		 176 if (rhs == NULL)
177 g = gimple_build_call (get_memory_access_decl (is_write, size),
178 1, expr_ptr);
32b4b7f5
DV		 179 else
180 {
181 builtin_decl = builtin_decl_implicit (BUILT_IN_TSAN_VPTR_UPDATE);
182 g = gimple_build_call (builtin_decl, 1, expr_ptr);
183 }
184 gimple_set_location (g, loc);
5c972fb6 185 gimple_seq_add_stmt_without_update (&seq, g);
32b4b7f5
DV		 186 /* Instrumentation for assignment of a function result
187 must be inserted after the call. Instrumentation for
188 reads of function arguments must be inserted before the call.
189 That's because the call can contain synchronization. */
190 if (is_gimple_call (stmt) && is_write)
191 {
192 /* If the call can throw, it must be the last stmt in
193 a basic block, so the instrumented stmts need to be
8ddf5c28 194 inserted in successor bbs. */
32b4b7f5
DV		 195 if (is_ctrl_altering_stmt (stmt))
196 {
197 edge e;
198
199 bb = gsi_bb (gsi);
200 e = find_fallthru_edge (bb->succs);
201 if (e)
5c972fb6 202 gsi_insert_seq_on_edge_immediate (e, seq);
32b4b7f5
DV		 203 }
204 else
5c972fb6 205 gsi_insert_seq_after (&gsi, seq, GSI_NEW_STMT);
32b4b7f5
DV		 206 }
207 else
5c972fb6 208 gsi_insert_seq_before (&gsi, seq, GSI_SAME_STMT);
32b4b7f5
DV		 209
210 return true;
211}
212
c954bddd
JJ		 213/* Actions for sync/atomic builtin transformations. */
214enum tsan_atomic_action
215{
216 check_last, add_seq_cst, add_acquire, weak_cas, strong_cas,
217 bool_cas, val_cas, lock_release, fetch_op, fetch_op_seq_cst
218};
219
220/* Table how to map sync/atomic builtins to their corresponding
221 tsan equivalents. */
34c136b6 222static const struct tsan_map_atomic
c954bddd
JJ		 223{
224 enum built_in_function fcode, tsan_fcode;
225 enum tsan_atomic_action action;
226 enum tree_code code;
227} tsan_atomic_table[] =
228{
229#define TRANSFORM(fcode, tsan_fcode, action, code) \
230 { BUILT_IN_##fcode, BUILT_IN_##tsan_fcode, action, code }
231#define CHECK_LAST(fcode, tsan_fcode) \
232 TRANSFORM (fcode, tsan_fcode, check_last, ERROR_MARK)
233#define ADD_SEQ_CST(fcode, tsan_fcode) \
234 TRANSFORM (fcode, tsan_fcode, add_seq_cst, ERROR_MARK)
235#define ADD_ACQUIRE(fcode, tsan_fcode) \
236 TRANSFORM (fcode, tsan_fcode, add_acquire, ERROR_MARK)
237#define WEAK_CAS(fcode, tsan_fcode) \
238 TRANSFORM (fcode, tsan_fcode, weak_cas, ERROR_MARK)
239#define STRONG_CAS(fcode, tsan_fcode) \
240 TRANSFORM (fcode, tsan_fcode, strong_cas, ERROR_MARK)
241#define BOOL_CAS(fcode, tsan_fcode) \
242 TRANSFORM (fcode, tsan_fcode, bool_cas, ERROR_MARK)
243#define VAL_CAS(fcode, tsan_fcode) \
244 TRANSFORM (fcode, tsan_fcode, val_cas, ERROR_MARK)
245#define LOCK_RELEASE(fcode, tsan_fcode) \
246 TRANSFORM (fcode, tsan_fcode, lock_release, ERROR_MARK)
247#define FETCH_OP(fcode, tsan_fcode, code) \
248 TRANSFORM (fcode, tsan_fcode, fetch_op, code)
249#define FETCH_OPS(fcode, tsan_fcode, code) \
250 TRANSFORM (fcode, tsan_fcode, fetch_op_seq_cst, code)
251
252 CHECK_LAST (ATOMIC_LOAD_1, TSAN_ATOMIC8_LOAD),
253 CHECK_LAST (ATOMIC_LOAD_2, TSAN_ATOMIC16_LOAD),
254 CHECK_LAST (ATOMIC_LOAD_4, TSAN_ATOMIC32_LOAD),
255 CHECK_LAST (ATOMIC_LOAD_8, TSAN_ATOMIC64_LOAD),
256 CHECK_LAST (ATOMIC_LOAD_16, TSAN_ATOMIC128_LOAD),
257 CHECK_LAST (ATOMIC_STORE_1, TSAN_ATOMIC8_STORE),
258 CHECK_LAST (ATOMIC_STORE_2, TSAN_ATOMIC16_STORE),
259 CHECK_LAST (ATOMIC_STORE_4, TSAN_ATOMIC32_STORE),
260 CHECK_LAST (ATOMIC_STORE_8, TSAN_ATOMIC64_STORE),
261 CHECK_LAST (ATOMIC_STORE_16, TSAN_ATOMIC128_STORE),
262 CHECK_LAST (ATOMIC_EXCHANGE_1, TSAN_ATOMIC8_EXCHANGE),
263 CHECK_LAST (ATOMIC_EXCHANGE_2, TSAN_ATOMIC16_EXCHANGE),
264 CHECK_LAST (ATOMIC_EXCHANGE_4, TSAN_ATOMIC32_EXCHANGE),
265 CHECK_LAST (ATOMIC_EXCHANGE_8, TSAN_ATOMIC64_EXCHANGE),
266 CHECK_LAST (ATOMIC_EXCHANGE_16, TSAN_ATOMIC128_EXCHANGE),
267 CHECK_LAST (ATOMIC_FETCH_ADD_1, TSAN_ATOMIC8_FETCH_ADD),
268 CHECK_LAST (ATOMIC_FETCH_ADD_2, TSAN_ATOMIC16_FETCH_ADD),
269 CHECK_LAST (ATOMIC_FETCH_ADD_4, TSAN_ATOMIC32_FETCH_ADD),
270 CHECK_LAST (ATOMIC_FETCH_ADD_8, TSAN_ATOMIC64_FETCH_ADD),
271 CHECK_LAST (ATOMIC_FETCH_ADD_16, TSAN_ATOMIC128_FETCH_ADD),
272 CHECK_LAST (ATOMIC_FETCH_SUB_1, TSAN_ATOMIC8_FETCH_SUB),
273 CHECK_LAST (ATOMIC_FETCH_SUB_2, TSAN_ATOMIC16_FETCH_SUB),
274 CHECK_LAST (ATOMIC_FETCH_SUB_4, TSAN_ATOMIC32_FETCH_SUB),
275 CHECK_LAST (ATOMIC_FETCH_SUB_8, TSAN_ATOMIC64_FETCH_SUB),
276 CHECK_LAST (ATOMIC_FETCH_SUB_16, TSAN_ATOMIC128_FETCH_SUB),
277 CHECK_LAST (ATOMIC_FETCH_AND_1, TSAN_ATOMIC8_FETCH_AND),
278 CHECK_LAST (ATOMIC_FETCH_AND_2, TSAN_ATOMIC16_FETCH_AND),
279 CHECK_LAST (ATOMIC_FETCH_AND_4, TSAN_ATOMIC32_FETCH_AND),
280 CHECK_LAST (ATOMIC_FETCH_AND_8, TSAN_ATOMIC64_FETCH_AND),
281 CHECK_LAST (ATOMIC_FETCH_AND_16, TSAN_ATOMIC128_FETCH_AND),
282 CHECK_LAST (ATOMIC_FETCH_OR_1, TSAN_ATOMIC8_FETCH_OR),
283 CHECK_LAST (ATOMIC_FETCH_OR_2, TSAN_ATOMIC16_FETCH_OR),
284 CHECK_LAST (ATOMIC_FETCH_OR_4, TSAN_ATOMIC32_FETCH_OR),
285 CHECK_LAST (ATOMIC_FETCH_OR_8, TSAN_ATOMIC64_FETCH_OR),
286 CHECK_LAST (ATOMIC_FETCH_OR_16, TSAN_ATOMIC128_FETCH_OR),
287 CHECK_LAST (ATOMIC_FETCH_XOR_1, TSAN_ATOMIC8_FETCH_XOR),
288 CHECK_LAST (ATOMIC_FETCH_XOR_2, TSAN_ATOMIC16_FETCH_XOR),
289 CHECK_LAST (ATOMIC_FETCH_XOR_4, TSAN_ATOMIC32_FETCH_XOR),
290 CHECK_LAST (ATOMIC_FETCH_XOR_8, TSAN_ATOMIC64_FETCH_XOR),
291 CHECK_LAST (ATOMIC_FETCH_XOR_16, TSAN_ATOMIC128_FETCH_XOR),
292 CHECK_LAST (ATOMIC_FETCH_NAND_1, TSAN_ATOMIC8_FETCH_NAND),
293 CHECK_LAST (ATOMIC_FETCH_NAND_2, TSAN_ATOMIC16_FETCH_NAND),
294 CHECK_LAST (ATOMIC_FETCH_NAND_4, TSAN_ATOMIC32_FETCH_NAND),
295 CHECK_LAST (ATOMIC_FETCH_NAND_8, TSAN_ATOMIC64_FETCH_NAND),
296 CHECK_LAST (ATOMIC_FETCH_NAND_16, TSAN_ATOMIC128_FETCH_NAND),
297
298 CHECK_LAST (ATOMIC_THREAD_FENCE, TSAN_ATOMIC_THREAD_FENCE),
299 CHECK_LAST (ATOMIC_SIGNAL_FENCE, TSAN_ATOMIC_SIGNAL_FENCE),
300
301 FETCH_OP (ATOMIC_ADD_FETCH_1, TSAN_ATOMIC8_FETCH_ADD, PLUS_EXPR),
302 FETCH_OP (ATOMIC_ADD_FETCH_2, TSAN_ATOMIC16_FETCH_ADD, PLUS_EXPR),
303 FETCH_OP (ATOMIC_ADD_FETCH_4, TSAN_ATOMIC32_FETCH_ADD, PLUS_EXPR),
304 FETCH_OP (ATOMIC_ADD_FETCH_8, TSAN_ATOMIC64_FETCH_ADD, PLUS_EXPR),
305 FETCH_OP (ATOMIC_ADD_FETCH_16, TSAN_ATOMIC128_FETCH_ADD, PLUS_EXPR),
306 FETCH_OP (ATOMIC_SUB_FETCH_1, TSAN_ATOMIC8_FETCH_SUB, MINUS_EXPR),
307 FETCH_OP (ATOMIC_SUB_FETCH_2, TSAN_ATOMIC16_FETCH_SUB, MINUS_EXPR),
308 FETCH_OP (ATOMIC_SUB_FETCH_4, TSAN_ATOMIC32_FETCH_SUB, MINUS_EXPR),
309 FETCH_OP (ATOMIC_SUB_FETCH_8, TSAN_ATOMIC64_FETCH_SUB, MINUS_EXPR),
310 FETCH_OP (ATOMIC_SUB_FETCH_16, TSAN_ATOMIC128_FETCH_SUB, MINUS_EXPR),
311 FETCH_OP (ATOMIC_AND_FETCH_1, TSAN_ATOMIC8_FETCH_AND, BIT_AND_EXPR),
312 FETCH_OP (ATOMIC_AND_FETCH_2, TSAN_ATOMIC16_FETCH_AND, BIT_AND_EXPR),
313 FETCH_OP (ATOMIC_AND_FETCH_4, TSAN_ATOMIC32_FETCH_AND, BIT_AND_EXPR),
314 FETCH_OP (ATOMIC_AND_FETCH_8, TSAN_ATOMIC64_FETCH_AND, BIT_AND_EXPR),
315 FETCH_OP (ATOMIC_AND_FETCH_16, TSAN_ATOMIC128_FETCH_AND, BIT_AND_EXPR),
316 FETCH_OP (ATOMIC_OR_FETCH_1, TSAN_ATOMIC8_FETCH_OR, BIT_IOR_EXPR),
317 FETCH_OP (ATOMIC_OR_FETCH_2, TSAN_ATOMIC16_FETCH_OR, BIT_IOR_EXPR),
318 FETCH_OP (ATOMIC_OR_FETCH_4, TSAN_ATOMIC32_FETCH_OR, BIT_IOR_EXPR),
319 FETCH_OP (ATOMIC_OR_FETCH_8, TSAN_ATOMIC64_FETCH_OR, BIT_IOR_EXPR),
320 FETCH_OP (ATOMIC_OR_FETCH_16, TSAN_ATOMIC128_FETCH_OR, BIT_IOR_EXPR),
321 FETCH_OP (ATOMIC_XOR_FETCH_1, TSAN_ATOMIC8_FETCH_XOR, BIT_XOR_EXPR),
322 FETCH_OP (ATOMIC_XOR_FETCH_2, TSAN_ATOMIC16_FETCH_XOR, BIT_XOR_EXPR),
323 FETCH_OP (ATOMIC_XOR_FETCH_4, TSAN_ATOMIC32_FETCH_XOR, BIT_XOR_EXPR),
324 FETCH_OP (ATOMIC_XOR_FETCH_8, TSAN_ATOMIC64_FETCH_XOR, BIT_XOR_EXPR),
325 FETCH_OP (ATOMIC_XOR_FETCH_16, TSAN_ATOMIC128_FETCH_XOR, BIT_XOR_EXPR),
326 FETCH_OP (ATOMIC_NAND_FETCH_1, TSAN_ATOMIC8_FETCH_NAND, BIT_NOT_EXPR),
327 FETCH_OP (ATOMIC_NAND_FETCH_2, TSAN_ATOMIC16_FETCH_NAND, BIT_NOT_EXPR),
328 FETCH_OP (ATOMIC_NAND_FETCH_4, TSAN_ATOMIC32_FETCH_NAND, BIT_NOT_EXPR),
329 FETCH_OP (ATOMIC_NAND_FETCH_8, TSAN_ATOMIC64_FETCH_NAND, BIT_NOT_EXPR),
330 FETCH_OP (ATOMIC_NAND_FETCH_16, TSAN_ATOMIC128_FETCH_NAND, BIT_NOT_EXPR),
331
332 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_1, TSAN_ATOMIC8_EXCHANGE),
333 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_2, TSAN_ATOMIC16_EXCHANGE),
334 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_4, TSAN_ATOMIC32_EXCHANGE),
335 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_8, TSAN_ATOMIC64_EXCHANGE),
336 ADD_ACQUIRE (SYNC_LOCK_TEST_AND_SET_16, TSAN_ATOMIC128_EXCHANGE),
337
338 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_1, TSAN_ATOMIC8_FETCH_ADD),
339 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_2, TSAN_ATOMIC16_FETCH_ADD),
340 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_4, TSAN_ATOMIC32_FETCH_ADD),
341 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_8, TSAN_ATOMIC64_FETCH_ADD),
342 ADD_SEQ_CST (SYNC_FETCH_AND_ADD_16, TSAN_ATOMIC128_FETCH_ADD),
343 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_1, TSAN_ATOMIC8_FETCH_SUB),
344 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_2, TSAN_ATOMIC16_FETCH_SUB),
345 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_4, TSAN_ATOMIC32_FETCH_SUB),
346 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_8, TSAN_ATOMIC64_FETCH_SUB),
347 ADD_SEQ_CST (SYNC_FETCH_AND_SUB_16, TSAN_ATOMIC128_FETCH_SUB),
348 ADD_SEQ_CST (SYNC_FETCH_AND_AND_1, TSAN_ATOMIC8_FETCH_AND),
349 ADD_SEQ_CST (SYNC_FETCH_AND_AND_2, TSAN_ATOMIC16_FETCH_AND),
350 ADD_SEQ_CST (SYNC_FETCH_AND_AND_4, TSAN_ATOMIC32_FETCH_AND),
351 ADD_SEQ_CST (SYNC_FETCH_AND_AND_8, TSAN_ATOMIC64_FETCH_AND),
352 ADD_SEQ_CST (SYNC_FETCH_AND_AND_16, TSAN_ATOMIC128_FETCH_AND),
353 ADD_SEQ_CST (SYNC_FETCH_AND_OR_1, TSAN_ATOMIC8_FETCH_OR),
354 ADD_SEQ_CST (SYNC_FETCH_AND_OR_2, TSAN_ATOMIC16_FETCH_OR),
355 ADD_SEQ_CST (SYNC_FETCH_AND_OR_4, TSAN_ATOMIC32_FETCH_OR),
356 ADD_SEQ_CST (SYNC_FETCH_AND_OR_8, TSAN_ATOMIC64_FETCH_OR),
357 ADD_SEQ_CST (SYNC_FETCH_AND_OR_16, TSAN_ATOMIC128_FETCH_OR),
358 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_1, TSAN_ATOMIC8_FETCH_XOR),
359 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_2, TSAN_ATOMIC16_FETCH_XOR),
360 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_4, TSAN_ATOMIC32_FETCH_XOR),
361 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_8, TSAN_ATOMIC64_FETCH_XOR),
362 ADD_SEQ_CST (SYNC_FETCH_AND_XOR_16, TSAN_ATOMIC128_FETCH_XOR),
363 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_1, TSAN_ATOMIC8_FETCH_NAND),
364 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_2, TSAN_ATOMIC16_FETCH_NAND),
365 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_4, TSAN_ATOMIC32_FETCH_NAND),
366 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_8, TSAN_ATOMIC64_FETCH_NAND),
367 ADD_SEQ_CST (SYNC_FETCH_AND_NAND_16, TSAN_ATOMIC128_FETCH_NAND),
368
369 ADD_SEQ_CST (SYNC_SYNCHRONIZE, TSAN_ATOMIC_THREAD_FENCE),
370
371 FETCH_OPS (SYNC_ADD_AND_FETCH_1, TSAN_ATOMIC8_FETCH_ADD, PLUS_EXPR),
372 FETCH_OPS (SYNC_ADD_AND_FETCH_2, TSAN_ATOMIC16_FETCH_ADD, PLUS_EXPR),
373 FETCH_OPS (SYNC_ADD_AND_FETCH_4, TSAN_ATOMIC32_FETCH_ADD, PLUS_EXPR),
374 FETCH_OPS (SYNC_ADD_AND_FETCH_8, TSAN_ATOMIC64_FETCH_ADD, PLUS_EXPR),
375 FETCH_OPS (SYNC_ADD_AND_FETCH_16, TSAN_ATOMIC128_FETCH_ADD, PLUS_EXPR),
376 FETCH_OPS (SYNC_SUB_AND_FETCH_1, TSAN_ATOMIC8_FETCH_SUB, MINUS_EXPR),
377 FETCH_OPS (SYNC_SUB_AND_FETCH_2, TSAN_ATOMIC16_FETCH_SUB, MINUS_EXPR),
378 FETCH_OPS (SYNC_SUB_AND_FETCH_4, TSAN_ATOMIC32_FETCH_SUB, MINUS_EXPR),
379 FETCH_OPS (SYNC_SUB_AND_FETCH_8, TSAN_ATOMIC64_FETCH_SUB, MINUS_EXPR),
380 FETCH_OPS (SYNC_SUB_AND_FETCH_16, TSAN_ATOMIC128_FETCH_SUB, MINUS_EXPR),
381 FETCH_OPS (SYNC_AND_AND_FETCH_1, TSAN_ATOMIC8_FETCH_AND, BIT_AND_EXPR),
382 FETCH_OPS (SYNC_AND_AND_FETCH_2, TSAN_ATOMIC16_FETCH_AND, BIT_AND_EXPR),
383 FETCH_OPS (SYNC_AND_AND_FETCH_4, TSAN_ATOMIC32_FETCH_AND, BIT_AND_EXPR),
384 FETCH_OPS (SYNC_AND_AND_FETCH_8, TSAN_ATOMIC64_FETCH_AND, BIT_AND_EXPR),
385 FETCH_OPS (SYNC_AND_AND_FETCH_16, TSAN_ATOMIC128_FETCH_AND, BIT_AND_EXPR),
386 FETCH_OPS (SYNC_OR_AND_FETCH_1, TSAN_ATOMIC8_FETCH_OR, BIT_IOR_EXPR),
387 FETCH_OPS (SYNC_OR_AND_FETCH_2, TSAN_ATOMIC16_FETCH_OR, BIT_IOR_EXPR),
388 FETCH_OPS (SYNC_OR_AND_FETCH_4, TSAN_ATOMIC32_FETCH_OR, BIT_IOR_EXPR),
389 FETCH_OPS (SYNC_OR_AND_FETCH_8, TSAN_ATOMIC64_FETCH_OR, BIT_IOR_EXPR),
390 FETCH_OPS (SYNC_OR_AND_FETCH_16, TSAN_ATOMIC128_FETCH_OR, BIT_IOR_EXPR),
391 FETCH_OPS (SYNC_XOR_AND_FETCH_1, TSAN_ATOMIC8_FETCH_XOR, BIT_XOR_EXPR),
392 FETCH_OPS (SYNC_XOR_AND_FETCH_2, TSAN_ATOMIC16_FETCH_XOR, BIT_XOR_EXPR),
393 FETCH_OPS (SYNC_XOR_AND_FETCH_4, TSAN_ATOMIC32_FETCH_XOR, BIT_XOR_EXPR),
394 FETCH_OPS (SYNC_XOR_AND_FETCH_8, TSAN_ATOMIC64_FETCH_XOR, BIT_XOR_EXPR),
395 FETCH_OPS (SYNC_XOR_AND_FETCH_16, TSAN_ATOMIC128_FETCH_XOR, BIT_XOR_EXPR),
396 FETCH_OPS (SYNC_NAND_AND_FETCH_1, TSAN_ATOMIC8_FETCH_NAND, BIT_NOT_EXPR),
397 FETCH_OPS (SYNC_NAND_AND_FETCH_2, TSAN_ATOMIC16_FETCH_NAND, BIT_NOT_EXPR),
398 FETCH_OPS (SYNC_NAND_AND_FETCH_4, TSAN_ATOMIC32_FETCH_NAND, BIT_NOT_EXPR),
399 FETCH_OPS (SYNC_NAND_AND_FETCH_8, TSAN_ATOMIC64_FETCH_NAND, BIT_NOT_EXPR),
400 FETCH_OPS (SYNC_NAND_AND_FETCH_16, TSAN_ATOMIC128_FETCH_NAND, BIT_NOT_EXPR),
401
402 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_1, TSAN_ATOMIC8_COMPARE_EXCHANGE_WEAK),
403 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_2, TSAN_ATOMIC16_COMPARE_EXCHANGE_WEAK),
404 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_4, TSAN_ATOMIC32_COMPARE_EXCHANGE_WEAK),
405 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_8, TSAN_ATOMIC64_COMPARE_EXCHANGE_WEAK),
406 WEAK_CAS (ATOMIC_COMPARE_EXCHANGE_16, TSAN_ATOMIC128_COMPARE_EXCHANGE_WEAK),
407
408 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_1, TSAN_ATOMIC8_COMPARE_EXCHANGE_STRONG),
409 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_2,
410 TSAN_ATOMIC16_COMPARE_EXCHANGE_STRONG),
411 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_4,
412 TSAN_ATOMIC32_COMPARE_EXCHANGE_STRONG),
413 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_8,
414 TSAN_ATOMIC64_COMPARE_EXCHANGE_STRONG),
415 STRONG_CAS (ATOMIC_COMPARE_EXCHANGE_16,
416 TSAN_ATOMIC128_COMPARE_EXCHANGE_STRONG),
417
418 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_1,
419 TSAN_ATOMIC8_COMPARE_EXCHANGE_STRONG),
420 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_2,
421 TSAN_ATOMIC16_COMPARE_EXCHANGE_STRONG),
422 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_4,
423 TSAN_ATOMIC32_COMPARE_EXCHANGE_STRONG),
424 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_8,
425 TSAN_ATOMIC64_COMPARE_EXCHANGE_STRONG),
426 BOOL_CAS (SYNC_BOOL_COMPARE_AND_SWAP_16,
427 TSAN_ATOMIC128_COMPARE_EXCHANGE_STRONG),
428
429 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_1, TSAN_ATOMIC8_COMPARE_EXCHANGE_STRONG),
430 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_2, TSAN_ATOMIC16_COMPARE_EXCHANGE_STRONG),
431 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_4, TSAN_ATOMIC32_COMPARE_EXCHANGE_STRONG),
432 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_8, TSAN_ATOMIC64_COMPARE_EXCHANGE_STRONG),
433 VAL_CAS (SYNC_VAL_COMPARE_AND_SWAP_16,
434 TSAN_ATOMIC128_COMPARE_EXCHANGE_STRONG),
435
436 LOCK_RELEASE (SYNC_LOCK_RELEASE_1, TSAN_ATOMIC8_STORE),
437 LOCK_RELEASE (SYNC_LOCK_RELEASE_2, TSAN_ATOMIC16_STORE),
438 LOCK_RELEASE (SYNC_LOCK_RELEASE_4, TSAN_ATOMIC32_STORE),
439 LOCK_RELEASE (SYNC_LOCK_RELEASE_8, TSAN_ATOMIC64_STORE),
440 LOCK_RELEASE (SYNC_LOCK_RELEASE_16, TSAN_ATOMIC128_STORE)
441};
442
443/* Instrument an atomic builtin. */
444
445static void
446instrument_builtin_call (gimple_stmt_iterator *gsi)
447{
448 gimple stmt = gsi_stmt (*gsi), g;
449 tree callee = gimple_call_fndecl (stmt), last_arg, args[6], t, lhs;
450 enum built_in_function fcode = DECL_FUNCTION_CODE (callee);
451 unsigned int i, num = gimple_call_num_args (stmt), j;
452 for (j = 0; j < 6 && j < num; j++)
453 args[j] = gimple_call_arg (stmt, j);
454 for (i = 0; i < ARRAY_SIZE (tsan_atomic_table); i++)
455 if (fcode != tsan_atomic_table[i].fcode)
456 continue;
457 else
458 {
459 tree decl = builtin_decl_implicit (tsan_atomic_table[i].tsan_fcode);
460 if (decl == NULL_TREE)
461 return;
462 switch (tsan_atomic_table[i].action)
463 {
464 case check_last:
465 case fetch_op:
466 last_arg = gimple_call_arg (stmt, num - 1);
cc269bb6 467 if (!tree_fits_uhwi_p (last_arg)
7d362f6c 468 || tree_to_uhwi (last_arg) > MEMMODEL_SEQ_CST)
c954bddd
JJ		 469 return;
470 gimple_call_set_fndecl (stmt, decl);
471 update_stmt (stmt);
472 if (tsan_atomic_table[i].action == fetch_op)
473 {
474 args[1] = gimple_call_arg (stmt, 1);
475 goto adjust_result;
476 }
477 return;
478 case add_seq_cst:
479 case add_acquire:
480 case fetch_op_seq_cst:
481 gcc_assert (num <= 2);
482 for (j = 0; j < num; j++)
483 args[j] = gimple_call_arg (stmt, j);
484 for (; j < 2; j++)
485 args[j] = NULL_TREE;
486 args[num] = build_int_cst (NULL_TREE,
487 tsan_atomic_table[i].action
488 != add_acquire
489 ? MEMMODEL_SEQ_CST
490 : MEMMODEL_ACQUIRE);
491 update_gimple_call (gsi, decl, num + 1, args[0], args[1], args[2]);
492 stmt = gsi_stmt (*gsi);
493 if (tsan_atomic_table[i].action == fetch_op_seq_cst)
494 {
495 adjust_result:
496 lhs = gimple_call_lhs (stmt);
497 if (lhs == NULL_TREE)
498 return;
499 if (!useless_type_conversion_p (TREE_TYPE (lhs),
500 TREE_TYPE (args[1])))
501 {
b731b390 502 tree var = make_ssa_name (TREE_TYPE (lhs));
0d0e4a03 503 g = gimple_build_assign (var, NOP_EXPR, args[1]);
c954bddd
JJ		 504 gsi_insert_after (gsi, g, GSI_NEW_STMT);
505 args[1] = var;
506 }
b731b390 507 gimple_call_set_lhs (stmt, make_ssa_name (TREE_TYPE (lhs)));
c954bddd
JJ		 508 /* BIT_NOT_EXPR stands for NAND. */
509 if (tsan_atomic_table[i].code == BIT_NOT_EXPR)
510 {
b731b390 511 tree var = make_ssa_name (TREE_TYPE (lhs));
0d0e4a03
JJ		 512 g = gimple_build_assign (var, BIT_AND_EXPR,
513 gimple_call_lhs (stmt), args[1]);
c954bddd 514 gsi_insert_after (gsi, g, GSI_NEW_STMT);
0d0e4a03 515 g = gimple_build_assign (lhs, BIT_NOT_EXPR, var);
c954bddd
JJ		 516 }
517 else
0d0e4a03
JJ		 518 g = gimple_build_assign (lhs, tsan_atomic_table[i].code,
519 gimple_call_lhs (stmt), args[1]);
c954bddd
JJ		 520 update_stmt (stmt);
521 gsi_insert_after (gsi, g, GSI_NEW_STMT);
522 }
523 return;
524 case weak_cas:
525 if (!integer_nonzerop (gimple_call_arg (stmt, 3)))
526 continue;
527 /* FALLTHRU */
528 case strong_cas:
529 gcc_assert (num == 6);
530 for (j = 0; j < 6; j++)
531 args[j] = gimple_call_arg (stmt, j);
cc269bb6 532 if (!tree_fits_uhwi_p (args[4])
7d362f6c 533 || tree_to_uhwi (args[4]) > MEMMODEL_SEQ_CST)
c954bddd 534 return;
cc269bb6 535 if (!tree_fits_uhwi_p (args[5])
7d362f6c 536 || tree_to_uhwi (args[5]) > MEMMODEL_SEQ_CST)
c954bddd
JJ		 537 return;
538 update_gimple_call (gsi, decl, 5, args[0], args[1], args[2],
539 args[4], args[5]);
540 return;
541 case bool_cas:
542 case val_cas:
543 gcc_assert (num == 3);
544 for (j = 0; j < 3; j++)
545 args[j] = gimple_call_arg (stmt, j);
546 t = TYPE_ARG_TYPES (TREE_TYPE (decl));
547 t = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (t)));
b731b390 548 t = create_tmp_var (t);
c954bddd
JJ		 549 mark_addressable (t);
550 if (!useless_type_conversion_p (TREE_TYPE (t),
551 TREE_TYPE (args[1])))
552 {
0d0e4a03
JJ		 553 g = gimple_build_assign (make_ssa_name (TREE_TYPE (t)),
554 NOP_EXPR, args[1]);
c954bddd
JJ		 555 gsi_insert_before (gsi, g, GSI_SAME_STMT);
556 args[1] = gimple_assign_lhs (g);
557 }
558 g = gimple_build_assign (t, args[1]);
559 gsi_insert_before (gsi, g, GSI_SAME_STMT);
560 lhs = gimple_call_lhs (stmt);
561 update_gimple_call (gsi, decl, 5, args[0],
562 build_fold_addr_expr (t), args[2],
563 build_int_cst (NULL_TREE,
564 MEMMODEL_SEQ_CST),
565 build_int_cst (NULL_TREE,
566 MEMMODEL_SEQ_CST));
567 if (tsan_atomic_table[i].action == val_cas && lhs)
568 {
569 tree cond;
570 stmt = gsi_stmt (*gsi);
b731b390 571 g = gimple_build_assign (make_ssa_name (TREE_TYPE (t)), t);
c954bddd
JJ		 572 gsi_insert_after (gsi, g, GSI_NEW_STMT);
573 t = make_ssa_name (TREE_TYPE (TREE_TYPE (decl)), stmt);
574 cond = build2 (NE_EXPR, boolean_type_node, t,
575 build_int_cst (TREE_TYPE (t), 0));
0d0e4a03
JJ		 576 g = gimple_build_assign (lhs, COND_EXPR, cond, args[1],
577 gimple_assign_lhs (g));
c954bddd
JJ		 578 gimple_call_set_lhs (stmt, t);
579 update_stmt (stmt);
580 gsi_insert_after (gsi, g, GSI_NEW_STMT);
581 }
582 return;
583 case lock_release:
584 gcc_assert (num == 1);
585 t = TYPE_ARG_TYPES (TREE_TYPE (decl));
586 t = TREE_VALUE (TREE_CHAIN (t));
587 update_gimple_call (gsi, decl, 3, gimple_call_arg (stmt, 0),
588 build_int_cst (t, 0),
589 build_int_cst (NULL_TREE,
590 MEMMODEL_RELEASE));
591 return;
592 default:
593 continue;
594 }
595 }
596}
597
32b4b7f5 598/* Instruments the gimple pointed to by GSI. Return
8ddf5c28 599 true if func entry/exit should be instrumented. */
32b4b7f5
DV		 600
601static bool
c954bddd 602instrument_gimple (gimple_stmt_iterator *gsi)
32b4b7f5
DV		 603{
604 gimple stmt;
605 tree rhs, lhs;
606 bool instrumented = false;
607
c954bddd 608 stmt = gsi_stmt (*gsi);
32b4b7f5
DV		 609 if (is_gimple_call (stmt)
610 && (gimple_call_fndecl (stmt)
611 != builtin_decl_implicit (BUILT_IN_TSAN_INIT)))
c954bddd 612 {
5c944c6c 613 if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
c954bddd
JJ		 614 instrument_builtin_call (gsi);
615 return true;
616 }
8ddf5c28
JJ		 617 else if (is_gimple_assign (stmt)
618 && !gimple_clobber_p (stmt))
32b4b7f5
DV		 619 {
620 if (gimple_store_p (stmt))
621 {
622 lhs = gimple_assign_lhs (stmt);
c954bddd 623 instrumented = instrument_expr (*gsi, lhs, true);
32b4b7f5
DV		 624 }
625 if (gimple_assign_load_p (stmt))
626 {
627 rhs = gimple_assign_rhs1 (stmt);
c954bddd 628 instrumented = instrument_expr (*gsi, rhs, false);
32b4b7f5
DV		 629 }
630 }
631 return instrumented;
632}
633
634/* Instruments all interesting memory accesses in the current function.
8ddf5c28 635 Return true if func entry/exit should be instrumented. */
32b4b7f5
DV		 636
637static bool
638instrument_memory_accesses (void)
639{
640 basic_block bb;
641 gimple_stmt_iterator gsi;
642 bool fentry_exit_instrument = false;
643
11cd3bed 644 FOR_EACH_BB_FN (bb, cfun)
32b4b7f5 645 for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
c954bddd 646 fentry_exit_instrument |= instrument_gimple (&gsi);
32b4b7f5
DV		 647 return fentry_exit_instrument;
648}
649
650/* Instruments function entry. */
651
652static void
653instrument_func_entry (void)
654{
655 basic_block succ_bb;
656 gimple_stmt_iterator gsi;
657 tree ret_addr, builtin_decl;
658 gimple g;
659
fefa31b5 660 succ_bb = single_succ (ENTRY_BLOCK_PTR_FOR_FN (cfun));
32b4b7f5
DV		 661 gsi = gsi_after_labels (succ_bb);
662
663 builtin_decl = builtin_decl_implicit (BUILT_IN_RETURN_ADDRESS);
664 g = gimple_build_call (builtin_decl, 1, integer_zero_node);
b731b390 665 ret_addr = make_ssa_name (ptr_type_node);
32b4b7f5
DV		 666 gimple_call_set_lhs (g, ret_addr);
667 gimple_set_location (g, cfun->function_start_locus);
668 gsi_insert_before (&gsi, g, GSI_SAME_STMT);
669
670 builtin_decl = builtin_decl_implicit (BUILT_IN_TSAN_FUNC_ENTRY);
671 g = gimple_build_call (builtin_decl, 1, ret_addr);
672 gimple_set_location (g, cfun->function_start_locus);
673 gsi_insert_before (&gsi, g, GSI_SAME_STMT);
674}
675
676/* Instruments function exits. */
677
678static void
679instrument_func_exit (void)
680{
681 location_t loc;
682 basic_block exit_bb;
683 gimple_stmt_iterator gsi;
684 gimple stmt, g;
685 tree builtin_decl;
686 edge e;
687 edge_iterator ei;
688
689 /* Find all function exits. */
fefa31b5 690 exit_bb = EXIT_BLOCK_PTR_FOR_FN (cfun);
32b4b7f5
DV		 691 FOR_EACH_EDGE (e, ei, exit_bb->preds)
692 {
693 gsi = gsi_last_bb (e->src);
694 stmt = gsi_stmt (gsi);
71c581e7
MP		 695 gcc_assert (gimple_code (stmt) == GIMPLE_RETURN
696 || gimple_call_builtin_p (stmt, BUILT_IN_RETURN));
32b4b7f5
DV		 697 loc = gimple_location (stmt);
698 builtin_decl = builtin_decl_implicit (BUILT_IN_TSAN_FUNC_EXIT);
699 g = gimple_build_call (builtin_decl, 0);
700 gimple_set_location (g, loc);
701 gsi_insert_before (&gsi, g, GSI_SAME_STMT);
702 }
703}
704
705/* ThreadSanitizer instrumentation pass. */
706
707static unsigned
708tsan_pass (void)
709{
0e668eaf 710 initialize_sanitizer_builtins ();
32b4b7f5
DV		 711 if (instrument_memory_accesses ())
712 {
713 instrument_func_entry ();
714 instrument_func_exit ();
715 }
716 return 0;
717}
718
32b4b7f5
DV		 719/* Inserts __tsan_init () into the list of CTORs. */
720
721void
722tsan_finish_file (void)
723{
0e668eaf 724 tree ctor_statements = NULL_TREE;
32b4b7f5 725
0e668eaf
JJ		 726 initialize_sanitizer_builtins ();
727 tree init_decl = builtin_decl_implicit (BUILT_IN_TSAN_INIT);
32b4b7f5
DV		 728 append_to_statement_list (build_call_expr (init_decl, 0),
729 &ctor_statements);
730 cgraph_build_static_cdtor ('I', ctor_statements,
731 MAX_RESERVED_INIT_PRIORITY - 1);
732}
733
734/* The pass descriptor. */
735
27a4cd48
DM		 736namespace {
737
738const pass_data pass_data_tsan =
32b4b7f5 739{
27a4cd48
DM		 740 GIMPLE_PASS, /* type */
741 "tsan", /* name */
742 OPTGROUP_NONE, /* optinfo_flags */
27a4cd48
DM		 743 TV_NONE, /* tv_id */
744 ( PROP_ssa | PROP_cfg ), /* properties_required */
745 0, /* properties_provided */
746 0, /* properties_destroyed */
747 0, /* todo_flags_start */
3bea341f 748 TODO_update_ssa, /* todo_flags_finish */
32b4b7f5
DV		 749};
750
27a4cd48
DM		 751class pass_tsan : public gimple_opt_pass
752{
753public:
c3284718
RS		 754 pass_tsan (gcc::context *ctxt)
755 : gimple_opt_pass (pass_data_tsan, ctxt)
27a4cd48
DM		 756 {}
757
758 /* opt_pass methods: */
65d3284b 759 opt_pass * clone () { return new pass_tsan (m_ctxt); }
1a3d085c
TS		 760 virtual bool gate (function *)
761{
762 return (flag_sanitize & SANITIZE_THREAD) != 0;
763}
764
be55bfe6 765 virtual unsigned int execute (function *) { return tsan_pass (); }
27a4cd48
DM		 766
767}; // class pass_tsan
768
769} // anon namespace
770
771gimple_opt_pass *
772make_pass_tsan (gcc::context *ctxt)
773{
774 return new pass_tsan (ctxt);
775}
776
27a4cd48
DM		 777namespace {
778
779const pass_data pass_data_tsan_O0 =
32b4b7f5 780{
27a4cd48
DM		 781 GIMPLE_PASS, /* type */
782 "tsan0", /* name */
783 OPTGROUP_NONE, /* optinfo_flags */
27a4cd48
DM		 784 TV_NONE, /* tv_id */
785 ( PROP_ssa | PROP_cfg ), /* properties_required */
786 0, /* properties_provided */
787 0, /* properties_destroyed */
788 0, /* todo_flags_start */
3bea341f 789 TODO_update_ssa, /* todo_flags_finish */
32b4b7f5 790};
27a4cd48
DM		 791
792class pass_tsan_O0 : public gimple_opt_pass
793{
794public:
c3284718
RS		 795 pass_tsan_O0 (gcc::context *ctxt)
796 : gimple_opt_pass (pass_data_tsan_O0, ctxt)
27a4cd48
DM		 797 {}
798
799 /* opt_pass methods: */
1a3d085c
TS		 800 virtual bool gate (function *)
801 {
802 return (flag_sanitize & SANITIZE_THREAD) != 0 && !optimize;
803 }
804
be55bfe6 805 virtual unsigned int execute (function *) { return tsan_pass (); }
27a4cd48
DM		 806
807}; // class pass_tsan_O0
808
809} // anon namespace
810
811gimple_opt_pass *
812make_pass_tsan_O0 (gcc::context *ctxt)
813{
814 return new pass_tsan_O0 (ctxt);
815}
Mirror of https://gcc.gnu.org/git/gcc.git