]>
Commit | Line | Data |
---|---|---|
d7f09764 DN |
1 | /* Write and read the cgraph to the memory mapped representation of a |
2 | .o file. | |
3 | ||
8d9254fc | 4 | Copyright (C) 2009-2020 Free Software Foundation, Inc. |
d7f09764 DN |
5 | Contributed by Kenneth Zadeck <zadeck@naturalbridge.com> |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify it under | |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 3, or (at your option) any later | |
12 | version. | |
13 | ||
14 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
15 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GCC; see the file COPYING3. If not see | |
21 | <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
c7131fb2 | 26 | #include "backend.h" |
957060b5 | 27 | #include "rtl.h" |
d7f09764 | 28 | #include "tree.h" |
c7131fb2 | 29 | #include "gimple.h" |
957060b5 | 30 | #include "predict.h" |
957060b5 | 31 | #include "stringpool.h" |
957060b5 AM |
32 | #include "tree-streamer.h" |
33 | #include "cgraph.h" | |
7d57274b | 34 | #include "tree-pass.h" |
2730ada7 | 35 | #include "profile.h" |
315f8c0e DM |
36 | #include "context.h" |
37 | #include "pass_manager.h" | |
82d618d3 | 38 | #include "ipa-utils.h" |
629b3d75 | 39 | #include "omp-offload.h" |
314e6352 ML |
40 | #include "stringpool.h" |
41 | #include "attribs.h" | |
d7f09764 | 42 | |
f300e7b8 JH |
43 | /* True when asm nodes has been output. */ |
44 | bool asm_nodes_output = false; | |
45 | ||
f27c1867 | 46 | static void output_cgraph_opt_summary (void); |
5e20cdc9 | 47 | static void input_cgraph_opt_summary (vec<symtab_node *> nodes); |
922f15c2 | 48 | |
533c07c5 | 49 | /* Number of LDPR values known to GCC. */ |
ed0d2da0 | 50 | #define LDPR_NUM_KNOWN (LDPR_PREVAILING_DEF_IRONLY_EXP + 1) |
2f41ecf5 | 51 | |
8b4765bf JH |
52 | /* Cgraph streaming is organized as set of record whose type |
53 | is indicated by a tag. */ | |
7380e6ef | 54 | enum LTO_symtab_tags |
8b4765bf JH |
55 | { |
56 | /* Must leave 0 for the stopper. */ | |
57 | ||
58 | /* Cgraph node without body available. */ | |
7380e6ef | 59 | LTO_symtab_unavail_node = 1, |
8b4765bf | 60 | /* Cgraph node with function body. */ |
7380e6ef | 61 | LTO_symtab_analyzed_node, |
8b4765bf | 62 | /* Cgraph edges. */ |
7380e6ef JH |
63 | LTO_symtab_edge, |
64 | LTO_symtab_indirect_edge, | |
65 | LTO_symtab_variable, | |
66 | LTO_symtab_last_tag | |
8b4765bf JH |
67 | }; |
68 | ||
e75f8f79 JH |
69 | /* Create a new symtab encoder. |
70 | if FOR_INPUT, the encoder allocate only datastructures needed | |
71 | to read the symtab. */ | |
d7f09764 | 72 | |
7380e6ef | 73 | lto_symtab_encoder_t |
e75f8f79 | 74 | lto_symtab_encoder_new (bool for_input) |
d7f09764 | 75 | { |
7380e6ef | 76 | lto_symtab_encoder_t encoder = XCNEW (struct lto_symtab_encoder_d); |
e75f8f79 JH |
77 | |
78 | if (!for_input) | |
b787e7a2 | 79 | encoder->map = new hash_map<symtab_node *, size_t>; |
9771b263 | 80 | encoder->nodes.create (0); |
d7f09764 DN |
81 | return encoder; |
82 | } | |
83 | ||
84 | ||
85 | /* Delete ENCODER and its components. */ | |
86 | ||
87 | void | |
7380e6ef | 88 | lto_symtab_encoder_delete (lto_symtab_encoder_t encoder) |
d7f09764 | 89 | { |
9771b263 | 90 | encoder->nodes.release (); |
e75f8f79 | 91 | if (encoder->map) |
b787e7a2 | 92 | delete encoder->map; |
d7f09764 DN |
93 | free (encoder); |
94 | } | |
95 | ||
96 | ||
7380e6ef | 97 | /* Return the existing reference number of NODE in the symtab encoder in |
d7f09764 DN |
98 | output block OB. Assign a new reference if this is the first time |
99 | NODE is encoded. */ | |
100 | ||
101 | int | |
7380e6ef | 102 | lto_symtab_encoder_encode (lto_symtab_encoder_t encoder, |
5e20cdc9 | 103 | symtab_node *node) |
d7f09764 DN |
104 | { |
105 | int ref; | |
b8698a0f | 106 | |
e75f8f79 JH |
107 | if (!encoder->map) |
108 | { | |
109 | lto_encoder_entry entry = {node, false, false, false}; | |
110 | ||
9771b263 DN |
111 | ref = encoder->nodes.length (); |
112 | encoder->nodes.safe_push (entry); | |
e75f8f79 JH |
113 | return ref; |
114 | } | |
115 | ||
b787e7a2 | 116 | size_t *slot = encoder->map->get (node); |
7b99cca4 | 117 | if (!slot || !*slot) |
d7f09764 | 118 | { |
7b99cca4 | 119 | lto_encoder_entry entry = {node, false, false, false}; |
9771b263 | 120 | ref = encoder->nodes.length (); |
7b99cca4 | 121 | if (!slot) |
b787e7a2 | 122 | encoder->map->put (node, ref + 1); |
9771b263 | 123 | encoder->nodes.safe_push (entry); |
d7f09764 DN |
124 | } |
125 | else | |
b787e7a2 | 126 | ref = *slot - 1; |
d7f09764 DN |
127 | |
128 | return ref; | |
129 | } | |
130 | ||
7b99cca4 | 131 | /* Remove NODE from encoder. */ |
d7f09764 | 132 | |
7b99cca4 JH |
133 | bool |
134 | lto_symtab_encoder_delete_node (lto_symtab_encoder_t encoder, | |
5e20cdc9 | 135 | symtab_node *node) |
d7f09764 | 136 | { |
7b99cca4 JH |
137 | int index; |
138 | lto_encoder_entry last_node; | |
139 | ||
b787e7a2 | 140 | size_t *slot = encoder->map->get (node); |
7b99cca4 JH |
141 | if (slot == NULL || !*slot) |
142 | return false; | |
143 | ||
b787e7a2 | 144 | index = *slot - 1; |
9771b263 | 145 | gcc_checking_assert (encoder->nodes[index].node == node); |
7b99cca4 JH |
146 | |
147 | /* Remove from vector. We do this by swapping node with the last element | |
148 | of the vector. */ | |
9771b263 | 149 | last_node = encoder->nodes.pop (); |
7b99cca4 JH |
150 | if (last_node.node != node) |
151 | { | |
b787e7a2 | 152 | gcc_assert (encoder->map->put (last_node.node, index + 1)); |
7b99cca4 JH |
153 | |
154 | /* Move the last element to the original spot of NODE. */ | |
9771b263 | 155 | encoder->nodes[index] = last_node; |
7b99cca4 JH |
156 | } |
157 | ||
158 | /* Remove element from hash table. */ | |
b787e7a2 | 159 | encoder->map->remove (node); |
7b99cca4 | 160 | return true; |
d7f09764 DN |
161 | } |
162 | ||
163 | ||
2ead7928 | 164 | /* Return TRUE if we should encode the body of NODE (if any). */ |
d7f09764 | 165 | |
91fbf0c7 | 166 | bool |
7380e6ef | 167 | lto_symtab_encoder_encode_body_p (lto_symtab_encoder_t encoder, |
91fbf0c7 JH |
168 | struct cgraph_node *node) |
169 | { | |
67348ccc | 170 | int index = lto_symtab_encoder_lookup (encoder, node); |
9771b263 | 171 | return encoder->nodes[index].body; |
91fbf0c7 JH |
172 | } |
173 | ||
2ead7928 | 174 | /* Specify that we encode the body of NODE in this partition. */ |
91fbf0c7 JH |
175 | |
176 | static void | |
7380e6ef | 177 | lto_set_symtab_encoder_encode_body (lto_symtab_encoder_t encoder, |
91fbf0c7 | 178 | struct cgraph_node *node) |
d7f09764 | 179 | { |
67348ccc DM |
180 | int index = lto_symtab_encoder_encode (encoder, node); |
181 | gcc_checking_assert (encoder->nodes[index].node == node); | |
9771b263 | 182 | encoder->nodes[index].body = true; |
d7f09764 DN |
183 | } |
184 | ||
2f41ecf5 JH |
185 | /* Return TRUE if we should encode initializer of NODE (if any). */ |
186 | ||
187 | bool | |
7380e6ef | 188 | lto_symtab_encoder_encode_initializer_p (lto_symtab_encoder_t encoder, |
2c8326a5 | 189 | varpool_node *node) |
2f41ecf5 | 190 | { |
67348ccc | 191 | int index = lto_symtab_encoder_lookup (encoder, node); |
7b99cca4 JH |
192 | if (index == LCC_NOT_FOUND) |
193 | return false; | |
9771b263 | 194 | return encoder->nodes[index].initializer; |
2f41ecf5 JH |
195 | } |
196 | ||
2ead7928 | 197 | /* Specify that we should encode initializer of NODE (if any). */ |
2f41ecf5 JH |
198 | |
199 | static void | |
7380e6ef | 200 | lto_set_symtab_encoder_encode_initializer (lto_symtab_encoder_t encoder, |
2c8326a5 | 201 | varpool_node *node) |
2f41ecf5 | 202 | { |
67348ccc | 203 | int index = lto_symtab_encoder_lookup (encoder, node); |
9771b263 | 204 | encoder->nodes[index].initializer = true; |
2f41ecf5 | 205 | } |
d7f09764 | 206 | |
2ead7928 | 207 | /* Return TRUE if NODE is in this partition. */ |
f27c1867 JH |
208 | |
209 | bool | |
210 | lto_symtab_encoder_in_partition_p (lto_symtab_encoder_t encoder, | |
5e20cdc9 | 211 | symtab_node *node) |
f27c1867 | 212 | { |
67348ccc | 213 | int index = lto_symtab_encoder_lookup (encoder, node); |
7b99cca4 JH |
214 | if (index == LCC_NOT_FOUND) |
215 | return false; | |
9771b263 | 216 | return encoder->nodes[index].in_partition; |
f27c1867 JH |
217 | } |
218 | ||
2ead7928 | 219 | /* Specify that NODE is in this partition. */ |
f27c1867 JH |
220 | |
221 | void | |
222 | lto_set_symtab_encoder_in_partition (lto_symtab_encoder_t encoder, | |
5e20cdc9 | 223 | symtab_node *node) |
f27c1867 | 224 | { |
67348ccc | 225 | int index = lto_symtab_encoder_encode (encoder, node); |
9771b263 | 226 | encoder->nodes[index].in_partition = true; |
f27c1867 JH |
227 | } |
228 | ||
d7f09764 DN |
229 | /* Output the cgraph EDGE to OB using ENCODER. */ |
230 | ||
231 | static void | |
232 | lto_output_edge (struct lto_simple_output_block *ob, struct cgraph_edge *edge, | |
7380e6ef | 233 | lto_symtab_encoder_t encoder) |
d7f09764 DN |
234 | { |
235 | unsigned int uid; | |
236 | intptr_t ref; | |
2465dcc2 | 237 | struct bitpack_d bp; |
d7f09764 | 238 | |
e33c6cd6 | 239 | if (edge->indirect_unknown_callee) |
7380e6ef JH |
240 | streamer_write_enum (ob->main_stream, LTO_symtab_tags, LTO_symtab_last_tag, |
241 | LTO_symtab_indirect_edge); | |
e33c6cd6 | 242 | else |
7380e6ef JH |
243 | streamer_write_enum (ob->main_stream, LTO_symtab_tags, LTO_symtab_last_tag, |
244 | LTO_symtab_edge); | |
d7f09764 | 245 | |
67348ccc | 246 | ref = lto_symtab_encoder_lookup (encoder, edge->caller); |
b8698a0f | 247 | gcc_assert (ref != LCC_NOT_FOUND); |
412288f1 | 248 | streamer_write_hwi_stream (ob->main_stream, ref); |
d7f09764 | 249 | |
e33c6cd6 MJ |
250 | if (!edge->indirect_unknown_callee) |
251 | { | |
67348ccc | 252 | ref = lto_symtab_encoder_lookup (encoder, edge->callee); |
e33c6cd6 | 253 | gcc_assert (ref != LCC_NOT_FOUND); |
412288f1 | 254 | streamer_write_hwi_stream (ob->main_stream, ref); |
e33c6cd6 | 255 | } |
d7f09764 | 256 | |
3995f3a2 | 257 | edge->count.stream_out (ob->main_stream); |
d7f09764 | 258 | |
2465dcc2 | 259 | bp = bitpack_create (ob->main_stream); |
118aa5e3 JH |
260 | uid = !edge->call_stmt ? edge->lto_stmt_uid |
261 | : gimple_uid (edge->call_stmt) + 1; | |
84562394 | 262 | bp_pack_enum (&bp, cgraph_inline_failed_t, |
533c07c5 | 263 | CIF_N_REASONS, edge->inline_failed); |
118aa5e3 | 264 | gcc_checking_assert (uid || edge->caller->thunk.thunk_p); |
533c07c5 | 265 | bp_pack_var_len_unsigned (&bp, uid); |
f1ba88b1 | 266 | bp_pack_value (&bp, edge->speculative_id, 16); |
2465dcc2 | 267 | bp_pack_value (&bp, edge->indirect_inlining_edge, 1); |
042ae7d2 | 268 | bp_pack_value (&bp, edge->speculative, 1); |
2465dcc2 | 269 | bp_pack_value (&bp, edge->call_stmt_cannot_inline_p, 1); |
1a0bf5e1 JH |
270 | gcc_assert (!edge->call_stmt_cannot_inline_p |
271 | || edge->inline_failed != CIF_BODY_NOT_AVAILABLE); | |
2465dcc2 | 272 | bp_pack_value (&bp, edge->can_throw_external, 1); |
f9bb202b | 273 | bp_pack_value (&bp, edge->in_polymorphic_cdtor, 1); |
5f902d76 JH |
274 | if (edge->indirect_unknown_callee) |
275 | { | |
276 | int flags = edge->indirect_info->ecf_flags; | |
2465dcc2 RG |
277 | bp_pack_value (&bp, (flags & ECF_CONST) != 0, 1); |
278 | bp_pack_value (&bp, (flags & ECF_PURE) != 0, 1); | |
279 | bp_pack_value (&bp, (flags & ECF_NORETURN) != 0, 1); | |
280 | bp_pack_value (&bp, (flags & ECF_MALLOC) != 0, 1); | |
281 | bp_pack_value (&bp, (flags & ECF_NOTHROW) != 0, 1); | |
282 | bp_pack_value (&bp, (flags & ECF_RETURNS_TWICE) != 0, 1); | |
5f902d76 JH |
283 | /* Flags that should not appear on indirect calls. */ |
284 | gcc_assert (!(flags & (ECF_LOOPING_CONST_OR_PURE | |
285 | | ECF_MAY_BE_ALLOCA | |
286 | | ECF_SIBCALL | |
db0bf14f | 287 | | ECF_LEAF |
5f902d76 | 288 | | ECF_NOVOPS))); |
f1ba88b1 XHL |
289 | |
290 | bp_pack_value (&bp, edge->indirect_info->num_speculative_call_targets, | |
291 | 16); | |
5f902d76 | 292 | } |
412288f1 | 293 | streamer_write_bitpack (&bp); |
d7f09764 DN |
294 | } |
295 | ||
d122681a | 296 | /* Return if NODE contain references from other partitions. */ |
f3380641 | 297 | |
369451ec | 298 | bool |
d122681a | 299 | referenced_from_other_partition_p (symtab_node *node, lto_symtab_encoder_t encoder) |
369451ec JH |
300 | { |
301 | int i; | |
d122681a ML |
302 | struct ipa_ref *ref = NULL; |
303 | ||
304 | for (i = 0; node->iterate_referring (i, ref); i++) | |
369451ec | 305 | { |
1f6be682 IV |
306 | /* Ignore references from non-offloadable nodes while streaming NODE into |
307 | offload LTO section. */ | |
308 | if (!ref->referring->need_lto_streaming) | |
309 | continue; | |
310 | ||
67348ccc | 311 | if (ref->referring->in_other_partition |
f27c1867 JH |
312 | || !lto_symtab_encoder_in_partition_p (encoder, ref->referring)) |
313 | return true; | |
369451ec JH |
314 | } |
315 | return false; | |
316 | } | |
317 | ||
a837268b JH |
318 | /* Return true when node is reachable from other partition. */ |
319 | ||
9a809897 | 320 | bool |
f27c1867 | 321 | reachable_from_other_partition_p (struct cgraph_node *node, lto_symtab_encoder_t encoder) |
a837268b JH |
322 | { |
323 | struct cgraph_edge *e; | |
67348ccc | 324 | if (!node->definition) |
a837268b | 325 | return false; |
a62bfab5 | 326 | if (node->inlined_to) |
a837268b JH |
327 | return false; |
328 | for (e = node->callers; e; e = e->next_caller) | |
1f6be682 IV |
329 | { |
330 | /* Ignore references from non-offloadable nodes while streaming NODE into | |
331 | offload LTO section. */ | |
332 | if (!e->caller->need_lto_streaming) | |
333 | continue; | |
334 | ||
335 | if (e->caller->in_other_partition | |
336 | || !lto_symtab_encoder_in_partition_p (encoder, e->caller)) | |
337 | return true; | |
338 | } | |
a837268b JH |
339 | return false; |
340 | } | |
d7f09764 | 341 | |
d122681a | 342 | /* Return if NODE contain references from other partitions. */ |
f3380641 JH |
343 | |
344 | bool | |
d122681a | 345 | referenced_from_this_partition_p (symtab_node *node, |
f27c1867 | 346 | lto_symtab_encoder_t encoder) |
f3380641 JH |
347 | { |
348 | int i; | |
d122681a ML |
349 | struct ipa_ref *ref = NULL; |
350 | ||
351 | for (i = 0; node->iterate_referring (i, ref); i++) | |
f27c1867 JH |
352 | if (lto_symtab_encoder_in_partition_p (encoder, ref->referring)) |
353 | return true; | |
f3380641 JH |
354 | return false; |
355 | } | |
356 | ||
357 | /* Return true when node is reachable from other partition. */ | |
358 | ||
359 | bool | |
f27c1867 | 360 | reachable_from_this_partition_p (struct cgraph_node *node, lto_symtab_encoder_t encoder) |
f3380641 JH |
361 | { |
362 | struct cgraph_edge *e; | |
f3380641 | 363 | for (e = node->callers; e; e = e->next_caller) |
67348ccc | 364 | if (lto_symtab_encoder_in_partition_p (encoder, e->caller)) |
f3380641 JH |
365 | return true; |
366 | return false; | |
367 | } | |
368 | ||
d7f09764 DN |
369 | /* Output the cgraph NODE to OB. ENCODER is used to find the |
370 | reference number of NODE->inlined_to. SET is the set of nodes we | |
371 | are writing to the current file. If NODE is not in SET, then NODE | |
372 | is a boundary of a cgraph_node_set and we pretend NODE just has a | |
373 | decl and no callees. WRITTEN_DECLS is the set of FUNCTION_DECLs | |
374 | that have had their callgraph node written so far. This is used to | |
375 | determine if NODE is a clone of a previously written node. */ | |
376 | ||
377 | static void | |
378 | lto_output_node (struct lto_simple_output_block *ob, struct cgraph_node *node, | |
f27c1867 | 379 | lto_symtab_encoder_t encoder) |
d7f09764 DN |
380 | { |
381 | unsigned int tag; | |
2465dcc2 | 382 | struct bitpack_d bp; |
91fbf0c7 | 383 | bool boundary_p; |
d7f09764 | 384 | intptr_t ref; |
a837268b | 385 | bool in_other_partition = false; |
a2e2a668 | 386 | struct cgraph_node *clone_of, *ultimate_clone_of; |
6a5ac314 | 387 | ipa_opt_pass_d *pass; |
7d57274b | 388 | int i; |
aede2c10 | 389 | const char *comdat; |
24d047a3 | 390 | const char *section; |
aede2c10 | 391 | tree group; |
d7f09764 | 392 | |
67348ccc | 393 | boundary_p = !lto_symtab_encoder_in_partition_p (encoder, node); |
d7f09764 | 394 | |
ec6a1e35 | 395 | if (node->analyzed && (!boundary_p || node->alias |
a62bfab5 | 396 | || (node->thunk.thunk_p && !node->inlined_to))) |
7380e6ef | 397 | tag = LTO_symtab_analyzed_node; |
8b4765bf | 398 | else |
7380e6ef | 399 | tag = LTO_symtab_unavail_node; |
d7f09764 | 400 | |
7380e6ef | 401 | streamer_write_enum (ob->main_stream, LTO_symtab_tags, LTO_symtab_last_tag, |
412288f1 | 402 | tag); |
67348ccc | 403 | streamer_write_hwi_stream (ob->main_stream, node->order); |
d7f09764 | 404 | |
d7f09764 DN |
405 | /* In WPA mode, we only output part of the call-graph. Also, we |
406 | fake cgraph node attributes. There are two cases that we care. | |
407 | ||
408 | Boundary nodes: There are nodes that are not part of SET but are | |
409 | called from within SET. We artificially make them look like | |
b8698a0f | 410 | externally visible nodes with no function body. |
d7f09764 DN |
411 | |
412 | Cherry-picked nodes: These are nodes we pulled from other | |
413 | translation units into SET during IPA-inlining. We make them as | |
414 | local static nodes to prevent clashes with other local statics. */ | |
96451279 | 415 | if (boundary_p && node->analyzed |
d52f5295 | 416 | && node->get_partitioning_class () == SYMBOL_PARTITION) |
d7f09764 | 417 | { |
67914693 | 418 | /* Inline clones cannot be part of boundary. |
a62bfab5 | 419 | gcc_assert (!node->inlined_to); |
a837268b JH |
420 | |
421 | FIXME: At the moment they can be, when partition contains an inline | |
422 | clone that is clone of inline clone from outside partition. We can | |
423 | reshape the clone tree and make other tree to be the root, but it | |
424 | needs a bit extra work and will be promplty done by cgraph_remove_node | |
425 | after reading back. */ | |
426 | in_other_partition = 1; | |
d7f09764 | 427 | } |
d7f09764 | 428 | |
91fbf0c7 JH |
429 | clone_of = node->clone_of; |
430 | while (clone_of | |
67348ccc | 431 | && (ref = lto_symtab_encoder_lookup (encoder, clone_of)) == LCC_NOT_FOUND) |
91fbf0c7 JH |
432 | if (clone_of->prev_sibling_clone) |
433 | clone_of = clone_of->prev_sibling_clone; | |
434 | else | |
435 | clone_of = clone_of->clone_of; | |
0cac82a0 | 436 | |
a2e2a668 JH |
437 | /* See if body of the master function is output. If not, we are seeing only |
438 | an declaration and we do not need to pass down clone tree. */ | |
439 | ultimate_clone_of = clone_of; | |
440 | while (ultimate_clone_of && ultimate_clone_of->clone_of) | |
441 | ultimate_clone_of = ultimate_clone_of->clone_of; | |
442 | ||
443 | if (clone_of && !lto_symtab_encoder_encode_body_p (encoder, ultimate_clone_of)) | |
444 | clone_of = NULL; | |
445 | ||
446 | if (tag == LTO_symtab_analyzed_node) | |
0cac82a0 | 447 | gcc_assert (clone_of || !node->clone_of); |
91fbf0c7 | 448 | if (!clone_of) |
412288f1 | 449 | streamer_write_hwi_stream (ob->main_stream, LCC_NOT_FOUND); |
91fbf0c7 | 450 | else |
412288f1 | 451 | streamer_write_hwi_stream (ob->main_stream, ref); |
d7f09764 | 452 | |
d7f09764 | 453 | |
67348ccc | 454 | lto_output_fn_decl_index (ob->decl_state, ob->main_stream, node->decl); |
3995f3a2 | 455 | node->count.stream_out (ob->main_stream); |
412288f1 | 456 | streamer_write_hwi_stream (ob->main_stream, node->count_materialization_scale); |
d7f09764 | 457 | |
7d57274b | 458 | streamer_write_hwi_stream (ob->main_stream, |
9771b263 DN |
459 | node->ipa_transforms_to_apply.length ()); |
460 | FOR_EACH_VEC_ELT (node->ipa_transforms_to_apply, i, pass) | |
f7695dbf | 461 | streamer_write_hwi_stream (ob->main_stream, pass->static_pass_number); |
7d57274b | 462 | |
7380e6ef | 463 | if (tag == LTO_symtab_analyzed_node) |
d7f09764 | 464 | { |
a62bfab5 | 465 | if (node->inlined_to) |
8b4765bf | 466 | { |
a62bfab5 | 467 | ref = lto_symtab_encoder_lookup (encoder, node->inlined_to); |
8b4765bf JH |
468 | gcc_assert (ref != LCC_NOT_FOUND); |
469 | } | |
470 | else | |
471 | ref = LCC_NOT_FOUND; | |
d7f09764 | 472 | |
412288f1 | 473 | streamer_write_hwi_stream (ob->main_stream, ref); |
d7f09764 | 474 | } |
d7f09764 | 475 | |
aede2c10 JH |
476 | group = node->get_comdat_group (); |
477 | if (group) | |
478 | comdat = IDENTIFIER_POINTER (group); | |
479 | else | |
480 | comdat = ""; | |
bfa2ebe3 | 481 | streamer_write_data_stream (ob->main_stream, comdat, strlen (comdat) + 1); |
24d047a3 | 482 | |
aede2c10 | 483 | if (group) |
b66887e4 | 484 | { |
71e54687 | 485 | if (node->same_comdat_group) |
aede2c10 | 486 | { |
71e54687 JH |
487 | ref = LCC_NOT_FOUND; |
488 | for (struct symtab_node *n = node->same_comdat_group; | |
489 | ref == LCC_NOT_FOUND && n != node; n = n->same_comdat_group) | |
490 | ref = lto_symtab_encoder_lookup (encoder, n); | |
aede2c10 JH |
491 | } |
492 | else | |
493 | ref = LCC_NOT_FOUND; | |
494 | streamer_write_hwi_stream (ob->main_stream, ref); | |
b66887e4 | 495 | } |
b66887e4 | 496 | |
e257a17c JH |
497 | section = node->get_section (); |
498 | if (!section) | |
24d047a3 | 499 | section = ""; |
24d047a3 | 500 | |
86ce5d2f ML |
501 | streamer_write_hwi_stream (ob->main_stream, node->tp_first_run); |
502 | ||
2465dcc2 | 503 | bp = bitpack_create (ob->main_stream); |
87f94429 | 504 | bp_pack_value (&bp, node->local, 1); |
67348ccc | 505 | bp_pack_value (&bp, node->externally_visible, 1); |
7861b648 | 506 | bp_pack_value (&bp, node->no_reorder, 1); |
67348ccc | 507 | bp_pack_value (&bp, node->definition, 1); |
87f94429 ML |
508 | bp_pack_value (&bp, node->versionable, 1); |
509 | bp_pack_value (&bp, node->can_change_signature, 1); | |
510 | bp_pack_value (&bp, node->redefined_extern_inline, 1); | |
67348ccc DM |
511 | bp_pack_value (&bp, node->force_output, 1); |
512 | bp_pack_value (&bp, node->forced_by_abi, 1); | |
513 | bp_pack_value (&bp, node->unique_name, 1); | |
4a5798de | 514 | bp_pack_value (&bp, node->body_removed, 1); |
e257a17c | 515 | bp_pack_value (&bp, node->implicit_section, 1); |
67348ccc | 516 | bp_pack_value (&bp, node->address_taken, 1); |
7380e6ef | 517 | bp_pack_value (&bp, tag == LTO_symtab_analyzed_node |
d52f5295 | 518 | && node->get_partitioning_class () == SYMBOL_PARTITION |
f27c1867 | 519 | && (reachable_from_other_partition_p (node, encoder) |
d122681a | 520 | || referenced_from_other_partition_p (node, encoder)), 1); |
2465dcc2 RG |
521 | bp_pack_value (&bp, node->lowered, 1); |
522 | bp_pack_value (&bp, in_other_partition, 1); | |
4bd019b8 | 523 | bp_pack_value (&bp, node->alias, 1); |
71e54687 | 524 | bp_pack_value (&bp, node->transparent_alias, 1); |
67348ccc | 525 | bp_pack_value (&bp, node->weakref, 1); |
d7ddfbcb | 526 | bp_pack_value (&bp, node->symver, 1); |
2465dcc2 | 527 | bp_pack_value (&bp, node->frequency, 2); |
844db5d0 JH |
528 | bp_pack_value (&bp, node->only_called_at_startup, 1); |
529 | bp_pack_value (&bp, node->only_called_at_exit, 1); | |
57ac2606 | 530 | bp_pack_value (&bp, node->tm_clone, 1); |
1f26ac87 | 531 | bp_pack_value (&bp, node->calls_comdat_local, 1); |
b84d4347 | 532 | bp_pack_value (&bp, node->icf_merged, 1); |
8413ca87 | 533 | bp_pack_value (&bp, node->nonfreeing_fn, 1); |
b74d8dc4 JH |
534 | bp_pack_value (&bp, node->merged_comdat, 1); |
535 | bp_pack_value (&bp, node->merged_extern_inline, 1); | |
4bd019b8 | 536 | bp_pack_value (&bp, node->thunk.thunk_p, 1); |
a79b7ec5 | 537 | bp_pack_value (&bp, node->parallelized_function, 1); |
7a50e708 JJ |
538 | bp_pack_value (&bp, node->declare_variant_alt, 1); |
539 | bp_pack_value (&bp, node->calls_declare_variant_alt, 1); | |
533c07c5 | 540 | bp_pack_enum (&bp, ld_plugin_symbol_resolution, |
5b42d196 JH |
541 | LDPR_NUM_KNOWN, |
542 | /* When doing incremental link, we will get new resolution | |
543 | info next time we process the file. */ | |
544 | flag_incremental_link ? LDPR_UNKNOWN : node->resolution); | |
41f669d8 | 545 | bp_pack_value (&bp, node->split_part, 1); |
412288f1 | 546 | streamer_write_bitpack (&bp); |
bfa2ebe3 | 547 | streamer_write_data_stream (ob->main_stream, section, strlen (section) + 1); |
2465dcc2 | 548 | |
ffdcdc0b JH |
549 | /* Stream thunk info always because we use it in |
550 | ipa_polymorphic_call_context::ipa_polymorphic_call_context | |
551 | to properly interpret THIS pointers for thunks that has been converted | |
552 | to Gimple. */ | |
553 | if (node->definition) | |
c47d0034 | 554 | { |
412288f1 | 555 | streamer_write_uhwi_stream |
c47d0034 JH |
556 | (ob->main_stream, |
557 | 1 + (node->thunk.this_adjusting != 0) * 2 | |
dbcdd561 | 558 | + (node->thunk.virtual_offset_p != 0) * 4); |
412288f1 DN |
559 | streamer_write_uhwi_stream (ob->main_stream, node->thunk.fixed_offset); |
560 | streamer_write_uhwi_stream (ob->main_stream, node->thunk.virtual_value); | |
44662f68 | 561 | streamer_write_uhwi_stream (ob->main_stream, node->thunk.indirect_offset); |
c47d0034 | 562 | } |
634ab819 | 563 | streamer_write_hwi_stream (ob->main_stream, node->profile_id); |
b74d8dc4 | 564 | streamer_write_hwi_stream (ob->main_stream, node->unit_id); |
569b1784 | 565 | if (DECL_STATIC_CONSTRUCTOR (node->decl)) |
1cff83e2 | 566 | streamer_write_hwi_stream (ob->main_stream, node->get_init_priority ()); |
569b1784 | 567 | if (DECL_STATIC_DESTRUCTOR (node->decl)) |
1cff83e2 | 568 | streamer_write_hwi_stream (ob->main_stream, node->get_fini_priority ()); |
d7f09764 DN |
569 | } |
570 | ||
2942c502 JH |
571 | /* Output the varpool NODE to OB. |
572 | If NODE is not in SET, then NODE is a boundary. */ | |
573 | ||
574 | static void | |
2c8326a5 | 575 | lto_output_varpool_node (struct lto_simple_output_block *ob, varpool_node *node, |
f27c1867 | 576 | lto_symtab_encoder_t encoder) |
2942c502 | 577 | { |
67348ccc | 578 | bool boundary_p = !lto_symtab_encoder_in_partition_p (encoder, node); |
87be7f0c JH |
579 | bool encode_initializer_p |
580 | = (node->definition | |
581 | && lto_symtab_encoder_encode_initializer_p (encoder, node)); | |
2465dcc2 | 582 | struct bitpack_d bp; |
9f90e80a | 583 | int ref; |
aede2c10 | 584 | const char *comdat; |
24d047a3 | 585 | const char *section; |
aede2c10 | 586 | tree group; |
2942c502 | 587 | |
87be7f0c JH |
588 | gcc_assert (!encode_initializer_p || node->definition); |
589 | gcc_assert (boundary_p || encode_initializer_p); | |
590 | ||
7380e6ef JH |
591 | streamer_write_enum (ob->main_stream, LTO_symtab_tags, LTO_symtab_last_tag, |
592 | LTO_symtab_variable); | |
67348ccc DM |
593 | streamer_write_hwi_stream (ob->main_stream, node->order); |
594 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, node->decl); | |
2465dcc2 | 595 | bp = bitpack_create (ob->main_stream); |
67348ccc | 596 | bp_pack_value (&bp, node->externally_visible, 1); |
7861b648 | 597 | bp_pack_value (&bp, node->no_reorder, 1); |
67348ccc DM |
598 | bp_pack_value (&bp, node->force_output, 1); |
599 | bp_pack_value (&bp, node->forced_by_abi, 1); | |
600 | bp_pack_value (&bp, node->unique_name, 1); | |
87be7f0c JH |
601 | bp_pack_value (&bp, |
602 | node->body_removed | |
603 | || (!encode_initializer_p && !node->alias && node->definition), | |
604 | 1); | |
e257a17c | 605 | bp_pack_value (&bp, node->implicit_section, 1); |
6de88c6a | 606 | bp_pack_value (&bp, node->writeonly, 1); |
87be7f0c JH |
607 | bp_pack_value (&bp, node->definition && (encode_initializer_p || node->alias), |
608 | 1); | |
4bd019b8 | 609 | bp_pack_value (&bp, node->alias, 1); |
71e54687 | 610 | bp_pack_value (&bp, node->transparent_alias, 1); |
67348ccc | 611 | bp_pack_value (&bp, node->weakref, 1); |
d7ddfbcb | 612 | bp_pack_value (&bp, node->symver, 1); |
71e54687 | 613 | bp_pack_value (&bp, node->analyzed && (!boundary_p || node->alias), 1); |
67348ccc | 614 | gcc_assert (node->definition || !node->analyzed); |
05575e07 JH |
615 | /* Constant pool initializers can be de-unified into individual ltrans units. |
616 | FIXME: Alternatively at -Os we may want to avoid generating for them the local | |
617 | labels and share them across LTRANS partitions. */ | |
d52f5295 | 618 | if (node->get_partitioning_class () != SYMBOL_PARTITION) |
05575e07 | 619 | { |
2465dcc2 RG |
620 | bp_pack_value (&bp, 0, 1); /* used_from_other_parition. */ |
621 | bp_pack_value (&bp, 0, 1); /* in_other_partition. */ | |
05575e07 JH |
622 | } |
623 | else | |
624 | { | |
67348ccc | 625 | bp_pack_value (&bp, node->definition |
d122681a | 626 | && referenced_from_other_partition_p (node, encoder), 1); |
67348ccc DM |
627 | bp_pack_value (&bp, node->analyzed |
628 | && boundary_p && !DECL_EXTERNAL (node->decl), 1); | |
6649df51 | 629 | /* in_other_partition. */ |
05575e07 | 630 | } |
56363ffd | 631 | bp_pack_value (&bp, node->tls_model, 3); |
eb6a09a7 | 632 | bp_pack_value (&bp, node->used_by_single_function, 1); |
ca280d38 | 633 | bp_pack_value (&bp, node->dynamically_initialized, 1); |
412288f1 | 634 | streamer_write_bitpack (&bp); |
24d047a3 | 635 | |
aede2c10 JH |
636 | group = node->get_comdat_group (); |
637 | if (group) | |
638 | comdat = IDENTIFIER_POINTER (group); | |
639 | else | |
640 | comdat = ""; | |
bfa2ebe3 | 641 | streamer_write_data_stream (ob->main_stream, comdat, strlen (comdat) + 1); |
24d047a3 | 642 | |
aede2c10 | 643 | if (group) |
9f90e80a | 644 | { |
71e54687 | 645 | if (node->same_comdat_group) |
aede2c10 | 646 | { |
71e54687 JH |
647 | ref = LCC_NOT_FOUND; |
648 | for (struct symtab_node *n = node->same_comdat_group; | |
649 | ref == LCC_NOT_FOUND && n != node; n = n->same_comdat_group) | |
650 | ref = lto_symtab_encoder_lookup (encoder, n); | |
aede2c10 JH |
651 | } |
652 | else | |
653 | ref = LCC_NOT_FOUND; | |
654 | streamer_write_hwi_stream (ob->main_stream, ref); | |
9f90e80a | 655 | } |
24d047a3 | 656 | |
e257a17c JH |
657 | section = node->get_section (); |
658 | if (!section) | |
24d047a3 | 659 | section = ""; |
bfa2ebe3 | 660 | streamer_write_data_stream (ob->main_stream, section, strlen (section) + 1); |
24d047a3 | 661 | |
412288f1 | 662 | streamer_write_enum (ob->main_stream, ld_plugin_symbol_resolution, |
67348ccc | 663 | LDPR_NUM_KNOWN, node->resolution); |
2942c502 JH |
664 | } |
665 | ||
369451ec JH |
666 | /* Output the varpool NODE to OB. |
667 | If NODE is not in SET, then NODE is a boundary. */ | |
668 | ||
669 | static void | |
670 | lto_output_ref (struct lto_simple_output_block *ob, struct ipa_ref *ref, | |
7380e6ef | 671 | lto_symtab_encoder_t encoder) |
369451ec | 672 | { |
2465dcc2 | 673 | struct bitpack_d bp; |
7380e6ef | 674 | int nref; |
118aa5e3 | 675 | int uid = !ref->stmt ? ref->lto_stmt_uid : gimple_uid (ref->stmt) + 1; |
042ae7d2 | 676 | struct cgraph_node *node; |
7380e6ef | 677 | |
2465dcc2 | 678 | bp = bitpack_create (ob->main_stream); |
d5e254e1 | 679 | bp_pack_value (&bp, ref->use, 3); |
042ae7d2 | 680 | bp_pack_value (&bp, ref->speculative, 1); |
412288f1 | 681 | streamer_write_bitpack (&bp); |
7380e6ef JH |
682 | nref = lto_symtab_encoder_lookup (encoder, ref->referred); |
683 | gcc_assert (nref != LCC_NOT_FOUND); | |
684 | streamer_write_hwi_stream (ob->main_stream, nref); | |
042ae7d2 | 685 | |
7de90a6c | 686 | node = dyn_cast <cgraph_node *> (ref->referring); |
042ae7d2 JH |
687 | if (node) |
688 | { | |
689 | if (ref->stmt) | |
690 | uid = gimple_uid (ref->stmt) + 1; | |
691 | streamer_write_hwi_stream (ob->main_stream, uid); | |
f1ba88b1 XHL |
692 | bp_pack_value (&bp, ref->speculative_id, 16); |
693 | streamer_write_bitpack (&bp); | |
042ae7d2 | 694 | } |
369451ec JH |
695 | } |
696 | ||
0bc1b77f JH |
697 | /* Stream out profile_summary to OB. */ |
698 | ||
699 | static void | |
700 | output_profile_summary (struct lto_simple_output_block *ob) | |
701 | { | |
702 | if (profile_info) | |
703 | { | |
2730ada7 TJ |
704 | /* We do not output num and run_max, they are not used by |
705 | GCC profile feedback and they are difficult to merge from multiple | |
706 | units. */ | |
512cc015 ML |
707 | unsigned runs = (profile_info->runs); |
708 | streamer_write_uhwi_stream (ob->main_stream, runs); | |
709 | ||
0208f7da JH |
710 | /* IPA-profile computes hot bb threshold based on cumulated |
711 | whole program profile. We need to stream it down to ltrans. */ | |
712 | if (flag_wpa) | |
713 | streamer_write_gcov_count_stream (ob->main_stream, | |
714 | get_hot_bb_threshold ()); | |
0bc1b77f JH |
715 | } |
716 | else | |
412288f1 | 717 | streamer_write_uhwi_stream (ob->main_stream, 0); |
0bc1b77f JH |
718 | } |
719 | ||
e33c6cd6 MJ |
720 | /* Output all callees or indirect outgoing edges. EDGE must be the first such |
721 | edge. */ | |
722 | ||
723 | static void | |
724 | output_outgoing_cgraph_edges (struct cgraph_edge *edge, | |
725 | struct lto_simple_output_block *ob, | |
7380e6ef | 726 | lto_symtab_encoder_t encoder) |
e33c6cd6 MJ |
727 | { |
728 | if (!edge) | |
729 | return; | |
730 | ||
731 | /* Output edges in backward direction, so the reconstructed callgraph match | |
732 | and it is easy to associate call sites in the IPA pass summaries. */ | |
733 | while (edge->next_callee) | |
734 | edge = edge->next_callee; | |
735 | for (; edge; edge = edge->prev_callee) | |
736 | lto_output_edge (ob, edge, encoder); | |
737 | } | |
738 | ||
369451ec JH |
739 | /* Output the part of the cgraph in SET. */ |
740 | ||
741 | static void | |
f27c1867 | 742 | output_refs (lto_symtab_encoder_t encoder) |
369451ec | 743 | { |
369451ec JH |
744 | struct lto_simple_output_block *ob; |
745 | int count; | |
746 | struct ipa_ref *ref; | |
369451ec JH |
747 | |
748 | ob = lto_create_simple_output_block (LTO_section_refs); | |
749 | ||
4bd019b8 | 750 | for (int i = 0; i < lto_symtab_encoder_size (encoder); i++) |
369451ec | 751 | { |
4bd019b8 JH |
752 | symtab_node *node = lto_symtab_encoder_deref (encoder, i); |
753 | ||
31db0fe0 | 754 | /* IPA_REF_ALIAS references are always preserved |
48de5d37 IE |
755 | in the boundary. Alias node can't have other references and |
756 | can be always handled as if it's not in the boundary. */ | |
4bd019b8 | 757 | if (!node->alias && !lto_symtab_encoder_in_partition_p (encoder, node)) |
31db0fe0 | 758 | continue; |
369451ec | 759 | |
d122681a | 760 | count = node->ref_list.nreferences (); |
369451ec JH |
761 | if (count) |
762 | { | |
edb983b2 | 763 | streamer_write_gcov_count_stream (ob->main_stream, count); |
412288f1 | 764 | streamer_write_uhwi_stream (ob->main_stream, |
f27c1867 | 765 | lto_symtab_encoder_lookup (encoder, node)); |
4bd019b8 | 766 | for (int i = 0; node->iterate_reference (i, ref); i++) |
7380e6ef | 767 | lto_output_ref (ob, ref, encoder); |
369451ec JH |
768 | } |
769 | } | |
770 | ||
412288f1 | 771 | streamer_write_uhwi_stream (ob->main_stream, 0); |
369451ec JH |
772 | |
773 | lto_destroy_simple_output_block (ob); | |
774 | } | |
775 | ||
b4661bfe JH |
776 | /* Add NODE into encoder as well as nodes it is cloned from. |
777 | Do it in a way so clones appear first. */ | |
778 | ||
779 | static void | |
780 | add_node_to (lto_symtab_encoder_t encoder, struct cgraph_node *node, | |
781 | bool include_body) | |
782 | { | |
783 | if (node->clone_of) | |
784 | add_node_to (encoder, node->clone_of, include_body); | |
785 | else if (include_body) | |
786 | lto_set_symtab_encoder_encode_body (encoder, node); | |
67348ccc | 787 | lto_symtab_encoder_encode (encoder, node); |
b4661bfe JH |
788 | } |
789 | ||
d122681a | 790 | /* Add all references in NODE to encoders. */ |
b4661bfe JH |
791 | |
792 | static void | |
3dafb85c | 793 | create_references (lto_symtab_encoder_t encoder, symtab_node *node) |
b4661bfe JH |
794 | { |
795 | int i; | |
d122681a ML |
796 | struct ipa_ref *ref = NULL; |
797 | for (i = 0; node->iterate_reference (i, ref); i++) | |
7de90a6c | 798 | if (is_a <cgraph_node *> (ref->referred)) |
d122681a | 799 | add_node_to (encoder, dyn_cast <cgraph_node *> (ref->referred), false); |
b4661bfe | 800 | else |
b5493fb2 | 801 | lto_symtab_encoder_encode (encoder, ref->referred); |
b4661bfe JH |
802 | } |
803 | ||
1f6be682 IV |
804 | /* Select what needs to be streamed out. In regular lto mode stream everything. |
805 | In offload lto mode stream only nodes marked as offloadable. */ | |
806 | void | |
837bac8c | 807 | select_what_to_stream (void) |
1f6be682 IV |
808 | { |
809 | struct symtab_node *snode; | |
810 | FOR_EACH_SYMBOL (snode) | |
837bac8c | 811 | snode->need_lto_streaming = !lto_stream_offload_p || snode->offloadable; |
1f6be682 IV |
812 | } |
813 | ||
b4661bfe JH |
814 | /* Find all symbols we want to stream into given partition and insert them |
815 | to encoders. | |
816 | ||
817 | The function actually replaces IN_ENCODER by new one. The reason is that | |
818 | streaming code needs clone's origin to be streamed before clone. This | |
819 | means that we need to insert the nodes in specific order. This order is | |
820 | ignored by the partitioning logic earlier. */ | |
821 | ||
822 | lto_symtab_encoder_t | |
823 | compute_ltrans_boundary (lto_symtab_encoder_t in_encoder) | |
d7f09764 | 824 | { |
d7f09764 | 825 | struct cgraph_edge *edge; |
f3380641 | 826 | int i; |
7380e6ef | 827 | lto_symtab_encoder_t encoder; |
7b99cca4 | 828 | lto_symtab_encoder_iterator lsei; |
6e2830c3 | 829 | hash_set<void *> reachable_call_targets; |
0bc1b77f | 830 | |
e75f8f79 | 831 | encoder = lto_symtab_encoder_new (false); |
d7f09764 | 832 | |
7b99cca4 JH |
833 | /* Go over all entries in the IN_ENCODER and duplicate them to |
834 | ENCODER. At the same time insert masters of clones so | |
835 | every master appears before clone. */ | |
836 | for (lsei = lsei_start_function_in_partition (in_encoder); | |
837 | !lsei_end_p (lsei); lsei_next_function_in_partition (&lsei)) | |
d7f09764 | 838 | { |
224dbc07 | 839 | struct cgraph_node *node = lsei_cgraph_node (lsei); |
1f6be682 IV |
840 | if (!node->need_lto_streaming) |
841 | continue; | |
91fbf0c7 | 842 | add_node_to (encoder, node, true); |
67348ccc | 843 | lto_set_symtab_encoder_in_partition (encoder, node); |
3dafb85c | 844 | create_references (encoder, node); |
d7f09764 | 845 | } |
7b99cca4 JH |
846 | for (lsei = lsei_start_variable_in_partition (in_encoder); |
847 | !lsei_end_p (lsei); lsei_next_variable_in_partition (&lsei)) | |
2f41ecf5 | 848 | { |
2c8326a5 | 849 | varpool_node *vnode = lsei_varpool_node (lsei); |
40a7fe1e | 850 | |
1f6be682 IV |
851 | if (!vnode->need_lto_streaming) |
852 | continue; | |
67348ccc | 853 | lto_set_symtab_encoder_in_partition (encoder, vnode); |
7380e6ef | 854 | lto_set_symtab_encoder_encode_initializer (encoder, vnode); |
3dafb85c | 855 | create_references (encoder, vnode); |
2f41ecf5 | 856 | } |
2f41ecf5 JH |
857 | /* Pickle in also the initializer of all referenced readonly variables |
858 | to help folding. Constant pool variables are not shared, so we must | |
859 | pickle those too. */ | |
7380e6ef | 860 | for (i = 0; i < lto_symtab_encoder_size (encoder); i++) |
2f41ecf5 | 861 | { |
5e20cdc9 | 862 | symtab_node *node = lto_symtab_encoder_deref (encoder, i); |
7de90a6c | 863 | if (varpool_node *vnode = dyn_cast <varpool_node *> (node)) |
2f41ecf5 | 864 | { |
6a6dac52 JH |
865 | if (!lto_symtab_encoder_encode_initializer_p (encoder, |
866 | vnode) | |
1e29e4d3 JH |
867 | && (((vnode->ctor_useable_for_folding_p () |
868 | && (!DECL_VIRTUAL_P (vnode->decl) | |
869 | || !flag_wpa | |
31db0fe0 | 870 | || flag_ltrans_devirtualize))))) |
7380e6ef JH |
871 | { |
872 | lto_set_symtab_encoder_encode_initializer (encoder, vnode); | |
3dafb85c | 873 | create_references (encoder, vnode); |
7380e6ef | 874 | } |
7380e6ef | 875 | } |
2f41ecf5 | 876 | } |
d7f09764 DN |
877 | |
878 | /* Go over all the nodes again to include callees that are not in | |
879 | SET. */ | |
7b99cca4 JH |
880 | for (lsei = lsei_start_function_in_partition (encoder); |
881 | !lsei_end_p (lsei); lsei_next_function_in_partition (&lsei)) | |
d7f09764 | 882 | { |
224dbc07 | 883 | struct cgraph_node *node = lsei_cgraph_node (lsei); |
d7f09764 DN |
884 | for (edge = node->callees; edge; edge = edge->next_callee) |
885 | { | |
886 | struct cgraph_node *callee = edge->callee; | |
67348ccc | 887 | if (!lto_symtab_encoder_in_partition_p (encoder, callee)) |
d7f09764 DN |
888 | { |
889 | /* We should have moved all the inlines. */ | |
a62bfab5 | 890 | gcc_assert (!callee->inlined_to); |
91fbf0c7 | 891 | add_node_to (encoder, callee, false); |
d7f09764 DN |
892 | } |
893 | } | |
82d618d3 | 894 | /* Add all possible targets for late devirtualization. */ |
1e29e4d3 | 895 | if (flag_ltrans_devirtualize || !flag_wpa) |
82d618d3 JH |
896 | for (edge = node->indirect_calls; edge; edge = edge->next_callee) |
897 | if (edge->indirect_info->polymorphic) | |
898 | { | |
899 | unsigned int i; | |
900 | void *cache_token; | |
901 | bool final; | |
902 | vec <cgraph_node *>targets | |
903 | = possible_polymorphic_call_targets | |
904 | (edge, &final, &cache_token); | |
6e2830c3 | 905 | if (!reachable_call_targets.add (cache_token)) |
82d618d3 | 906 | { |
c3284718 | 907 | for (i = 0; i < targets.length (); i++) |
82d618d3 JH |
908 | { |
909 | struct cgraph_node *callee = targets[i]; | |
910 | ||
911 | /* Adding an external declarations into the unit serves | |
912 | no purpose and just increases its boundary. */ | |
67348ccc | 913 | if (callee->definition |
82d618d3 | 914 | && !lto_symtab_encoder_in_partition_p |
67348ccc | 915 | (encoder, callee)) |
82d618d3 | 916 | { |
a62bfab5 | 917 | gcc_assert (!callee->inlined_to); |
82d618d3 JH |
918 | add_node_to (encoder, callee, false); |
919 | } | |
920 | } | |
921 | } | |
922 | } | |
d7f09764 | 923 | } |
4bd019b8 JH |
924 | /* Be sure to also insert alias targert and thunk callees. These needs |
925 | to stay to aid local calling conventions. */ | |
926 | for (i = 0; i < lto_symtab_encoder_size (encoder); i++) | |
927 | { | |
928 | symtab_node *node = lto_symtab_encoder_deref (encoder, i); | |
929 | cgraph_node *cnode = dyn_cast <cgraph_node *> (node); | |
930 | ||
931 | if (node->alias && node->analyzed) | |
932 | create_references (encoder, node); | |
933 | if (cnode | |
a62bfab5 | 934 | && cnode->thunk.thunk_p && !cnode->inlined_to) |
4bd019b8 | 935 | add_node_to (encoder, cnode->callees->callee, false); |
2b73ad1d JH |
936 | while (node->transparent_alias && node->analyzed) |
937 | { | |
938 | node = node->get_alias_target (); | |
939 | if (is_a <cgraph_node *> (node)) | |
940 | add_node_to (encoder, dyn_cast <cgraph_node *> (node), | |
941 | false); | |
942 | else | |
943 | lto_symtab_encoder_encode (encoder, node); | |
944 | } | |
4bd019b8 | 945 | } |
82d618d3 | 946 | lto_symtab_encoder_delete (in_encoder); |
82d618d3 | 947 | return encoder; |
f3380641 JH |
948 | } |
949 | ||
ab96cc5b | 950 | /* Output the part of the symtab in SET and VSET. */ |
f3380641 JH |
951 | |
952 | void | |
f27c1867 | 953 | output_symtab (void) |
f3380641 JH |
954 | { |
955 | struct cgraph_node *node; | |
956 | struct lto_simple_output_block *ob; | |
f3380641 | 957 | int i, n_nodes; |
7380e6ef | 958 | lto_symtab_encoder_t encoder; |
f3380641 | 959 | |
922f15c2 | 960 | if (flag_wpa) |
f27c1867 | 961 | output_cgraph_opt_summary (); |
922f15c2 | 962 | |
ab96cc5b | 963 | ob = lto_create_simple_output_block (LTO_section_symtab_nodes); |
f3380641 JH |
964 | |
965 | output_profile_summary (ob); | |
966 | ||
967 | /* An encoder for cgraph nodes should have been created by | |
968 | ipa_write_summaries_1. */ | |
7380e6ef JH |
969 | gcc_assert (ob->decl_state->symtab_node_encoder); |
970 | encoder = ob->decl_state->symtab_node_encoder; | |
f3380641 | 971 | |
a837268b JH |
972 | /* Write out the nodes. We must first output a node and then its clones, |
973 | otherwise at a time reading back the node there would be nothing to clone | |
974 | from. */ | |
7380e6ef | 975 | n_nodes = lto_symtab_encoder_size (encoder); |
d7f09764 DN |
976 | for (i = 0; i < n_nodes; i++) |
977 | { | |
5e20cdc9 | 978 | symtab_node *node = lto_symtab_encoder_deref (encoder, i); |
7de90a6c | 979 | if (cgraph_node *cnode = dyn_cast <cgraph_node *> (node)) |
5d59b5e1 | 980 | lto_output_node (ob, cnode, encoder); |
7380e6ef | 981 | else |
d52f5295 | 982 | lto_output_varpool_node (ob, dyn_cast<varpool_node *> (node), encoder); |
d7f09764 DN |
983 | } |
984 | ||
d7f09764 | 985 | /* Go over the nodes in SET again to write edges. */ |
4bd019b8 | 986 | for (int i = 0; i < lto_symtab_encoder_size (encoder); i++) |
d7f09764 | 987 | { |
4bd019b8 JH |
988 | node = dyn_cast <cgraph_node *> (lto_symtab_encoder_deref (encoder, i)); |
989 | if (node | |
a62bfab5 | 990 | && ((node->thunk.thunk_p && !node->inlined_to) |
4bd019b8 JH |
991 | || lto_symtab_encoder_in_partition_p (encoder, node))) |
992 | { | |
993 | output_outgoing_cgraph_edges (node->callees, ob, encoder); | |
994 | output_outgoing_cgraph_edges (node->indirect_calls, ob, encoder); | |
995 | } | |
d7f09764 DN |
996 | } |
997 | ||
412288f1 | 998 | streamer_write_uhwi_stream (ob->main_stream, 0); |
d7f09764 | 999 | |
49f836ba JB |
1000 | lto_destroy_simple_output_block (ob); |
1001 | ||
b0d9e663 JH |
1002 | /* Emit toplevel asms. |
1003 | When doing WPA we must output every asm just once. Since we do not partition asm | |
1004 | nodes at all, output them to first output. This is kind of hack, but should work | |
1005 | well. */ | |
1006 | if (!asm_nodes_output) | |
a9cc4458 | 1007 | { |
b0d9e663 | 1008 | asm_nodes_output = true; |
49f836ba | 1009 | lto_output_toplevel_asms (); |
a9cc4458 RG |
1010 | } |
1011 | ||
f27c1867 | 1012 | output_refs (encoder); |
d7f09764 DN |
1013 | } |
1014 | ||
24d047a3 | 1015 | /* Return identifier encoded in IB as a plain string. */ |
aede2c10 JH |
1016 | |
1017 | static tree | |
99b1c316 | 1018 | read_identifier (class lto_input_block *ib) |
aede2c10 JH |
1019 | { |
1020 | unsigned int len = strnlen (ib->data + ib->p, ib->len - ib->p - 1); | |
24d047a3 JH |
1021 | tree id; |
1022 | ||
1023 | if (ib->data[ib->p + len]) | |
1024 | lto_section_overrun (ib); | |
1025 | if (!len) | |
1026 | { | |
1027 | ib->p++; | |
1028 | return NULL; | |
1029 | } | |
1030 | id = get_identifier (ib->data + ib->p); | |
1031 | ib->p += len + 1; | |
1032 | return id; | |
1033 | } | |
1034 | ||
f961457f | 1035 | /* Return string encoded in IB, NULL if string is empty. */ |
24d047a3 | 1036 | |
f961457f | 1037 | static const char * |
99b1c316 | 1038 | read_string (class lto_input_block *ib) |
24d047a3 JH |
1039 | { |
1040 | unsigned int len = strnlen (ib->data + ib->p, ib->len - ib->p - 1); | |
f961457f | 1041 | const char *str; |
aede2c10 JH |
1042 | |
1043 | if (ib->data[ib->p + len]) | |
1044 | lto_section_overrun (ib); | |
1045 | if (!len) | |
1046 | { | |
1047 | ib->p++; | |
1048 | return NULL; | |
1049 | } | |
f961457f | 1050 | str = ib->data + ib->p; |
aede2c10 | 1051 | ib->p += len + 1; |
f961457f | 1052 | return str; |
aede2c10 JH |
1053 | } |
1054 | ||
ec6fe917 IV |
1055 | /* Output function/variable tables that will allow libgomp to look up offload |
1056 | target code. | |
1057 | OFFLOAD_FUNCS is filled in expand_omp_target, OFFLOAD_VARS is filled in | |
1058 | varpool_node::get_create. In WHOPR (partitioned) mode during the WPA stage | |
1059 | both OFFLOAD_FUNCS and OFFLOAD_VARS are filled by input_offload_tables. */ | |
1060 | ||
1061 | void | |
1062 | output_offload_tables (void) | |
1063 | { | |
1064 | if (vec_safe_is_empty (offload_funcs) && vec_safe_is_empty (offload_vars)) | |
1065 | return; | |
1066 | ||
1067 | struct lto_simple_output_block *ob | |
1068 | = lto_create_simple_output_block (LTO_section_offload_table); | |
1069 | ||
1070 | for (unsigned i = 0; i < vec_safe_length (offload_funcs); i++) | |
1071 | { | |
1072 | streamer_write_enum (ob->main_stream, LTO_symtab_tags, | |
1073 | LTO_symtab_last_tag, LTO_symtab_unavail_node); | |
1074 | lto_output_fn_decl_index (ob->decl_state, ob->main_stream, | |
1075 | (*offload_funcs)[i]); | |
1076 | } | |
1077 | ||
1078 | for (unsigned i = 0; i < vec_safe_length (offload_vars); i++) | |
1079 | { | |
1080 | streamer_write_enum (ob->main_stream, LTO_symtab_tags, | |
1081 | LTO_symtab_last_tag, LTO_symtab_variable); | |
1082 | lto_output_var_decl_index (ob->decl_state, ob->main_stream, | |
1083 | (*offload_vars)[i]); | |
1084 | } | |
1085 | ||
1086 | streamer_write_uhwi_stream (ob->main_stream, 0); | |
1087 | lto_destroy_simple_output_block (ob); | |
1088 | ||
1089 | /* In WHOPR mode during the WPA stage the joint offload tables need to be | |
1090 | streamed to one partition only. That's why we free offload_funcs and | |
1091 | offload_vars after the first call of output_offload_tables. */ | |
1092 | if (flag_wpa) | |
1093 | { | |
1094 | vec_free (offload_funcs); | |
1095 | vec_free (offload_vars); | |
1096 | } | |
1097 | } | |
1098 | ||
b0aba46c TV |
1099 | /* Verify the partitioning of NODE. */ |
1100 | ||
1101 | static inline void | |
1102 | verify_node_partition (symtab_node *node) | |
1103 | { | |
1104 | if (flag_ltrans) | |
1105 | return; | |
1106 | ||
1107 | #ifdef ACCEL_COMPILER | |
1108 | if (node->in_other_partition) | |
1109 | { | |
1110 | if (TREE_CODE (node->decl) == FUNCTION_DECL) | |
1111 | error_at (DECL_SOURCE_LOCATION (node->decl), | |
1112 | "function %qs has been referenced in offloaded code but" | |
1113 | " hasn%'t been marked to be included in the offloaded code", | |
1114 | node->name ()); | |
1115 | else if (VAR_P (node->decl)) | |
1116 | error_at (DECL_SOURCE_LOCATION (node->decl), | |
1117 | "variable %qs has been referenced in offloaded code but" | |
1118 | " hasn%'t been marked to be included in the offloaded code", | |
1119 | node->name ()); | |
1120 | else | |
1121 | gcc_unreachable (); | |
1122 | } | |
1123 | #else | |
1124 | gcc_assert (!node->in_other_partition | |
1125 | && !node->used_from_other_partition); | |
1126 | #endif | |
1127 | } | |
1128 | ||
d7f09764 DN |
1129 | /* Overwrite the information in NODE based on FILE_DATA, TAG, FLAGS, |
1130 | STACK_SIZE, SELF_TIME and SELF_SIZE. This is called either to initialize | |
1131 | NODE or to replace the values in it, for instance because the first | |
1132 | time we saw it, the function body was not available but now it | |
1133 | is. BP is a bitpack with all the bitflags for NODE read from the | |
1134 | stream. */ | |
1135 | ||
1136 | static void | |
1137 | input_overwrite_node (struct lto_file_decl_data *file_data, | |
1138 | struct cgraph_node *node, | |
7380e6ef | 1139 | enum LTO_symtab_tags tag, |
533c07c5 | 1140 | struct bitpack_d *bp) |
d7f09764 | 1141 | { |
67348ccc DM |
1142 | node->aux = (void *) tag; |
1143 | node->lto_file_data = file_data; | |
d7f09764 | 1144 | |
87f94429 | 1145 | node->local = bp_unpack_value (bp, 1); |
67348ccc | 1146 | node->externally_visible = bp_unpack_value (bp, 1); |
7861b648 | 1147 | node->no_reorder = bp_unpack_value (bp, 1); |
67348ccc | 1148 | node->definition = bp_unpack_value (bp, 1); |
87f94429 ML |
1149 | node->versionable = bp_unpack_value (bp, 1); |
1150 | node->can_change_signature = bp_unpack_value (bp, 1); | |
1151 | node->redefined_extern_inline = bp_unpack_value (bp, 1); | |
67348ccc DM |
1152 | node->force_output = bp_unpack_value (bp, 1); |
1153 | node->forced_by_abi = bp_unpack_value (bp, 1); | |
1154 | node->unique_name = bp_unpack_value (bp, 1); | |
4a5798de | 1155 | node->body_removed = bp_unpack_value (bp, 1); |
e257a17c | 1156 | node->implicit_section = bp_unpack_value (bp, 1); |
67348ccc DM |
1157 | node->address_taken = bp_unpack_value (bp, 1); |
1158 | node->used_from_other_partition = bp_unpack_value (bp, 1); | |
d7f09764 | 1159 | node->lowered = bp_unpack_value (bp, 1); |
67348ccc DM |
1160 | node->analyzed = tag == LTO_symtab_analyzed_node; |
1161 | node->in_other_partition = bp_unpack_value (bp, 1); | |
1162 | if (node->in_other_partition | |
52b3b3c7 JH |
1163 | /* Avoid updating decl when we are seeing just inline clone. |
1164 | When inlining function that has functions already inlined into it, | |
1165 | we produce clones of inline clones. | |
1166 | ||
1167 | WPA partitioning might put each clone into different unit and | |
1168 | we might end up streaming inline clone from other partition | |
1169 | to support clone we are interested in. */ | |
1170 | && (!node->clone_of | |
67348ccc | 1171 | || node->clone_of->decl != node->decl)) |
1c7b11d2 | 1172 | { |
67348ccc DM |
1173 | DECL_EXTERNAL (node->decl) = 1; |
1174 | TREE_STATIC (node->decl) = 0; | |
1c7b11d2 | 1175 | } |
67348ccc | 1176 | node->alias = bp_unpack_value (bp, 1); |
71e54687 | 1177 | node->transparent_alias = bp_unpack_value (bp, 1); |
67348ccc | 1178 | node->weakref = bp_unpack_value (bp, 1); |
d7ddfbcb | 1179 | node->symver = bp_unpack_value (bp, 1); |
5fefcf92 | 1180 | node->frequency = (enum node_frequency)bp_unpack_value (bp, 2); |
844db5d0 JH |
1181 | node->only_called_at_startup = bp_unpack_value (bp, 1); |
1182 | node->only_called_at_exit = bp_unpack_value (bp, 1); | |
57ac2606 | 1183 | node->tm_clone = bp_unpack_value (bp, 1); |
1f26ac87 | 1184 | node->calls_comdat_local = bp_unpack_value (bp, 1); |
b84d4347 | 1185 | node->icf_merged = bp_unpack_value (bp, 1); |
8413ca87 | 1186 | node->nonfreeing_fn = bp_unpack_value (bp, 1); |
b74d8dc4 JH |
1187 | node->merged_comdat = bp_unpack_value (bp, 1); |
1188 | node->merged_extern_inline = bp_unpack_value (bp, 1); | |
c47d0034 | 1189 | node->thunk.thunk_p = bp_unpack_value (bp, 1); |
a79b7ec5 | 1190 | node->parallelized_function = bp_unpack_value (bp, 1); |
7a50e708 JJ |
1191 | node->declare_variant_alt = bp_unpack_value (bp, 1); |
1192 | node->calls_declare_variant_alt = bp_unpack_value (bp, 1); | |
67348ccc | 1193 | node->resolution = bp_unpack_enum (bp, ld_plugin_symbol_resolution, |
533c07c5 | 1194 | LDPR_NUM_KNOWN); |
41f669d8 | 1195 | node->split_part = bp_unpack_value (bp, 1); |
b0aba46c | 1196 | verify_node_partition (node); |
d7f09764 DN |
1197 | } |
1198 | ||
40a7fe1e JH |
1199 | /* Return string alias is alias of. */ |
1200 | ||
1201 | static tree | |
1202 | get_alias_symbol (tree decl) | |
1203 | { | |
1204 | tree alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl)); | |
40a7fe1e JH |
1205 | return get_identifier (TREE_STRING_POINTER |
1206 | (TREE_VALUE (TREE_VALUE (alias)))); | |
1207 | } | |
1208 | ||
b8698a0f | 1209 | /* Read a node from input_block IB. TAG is the node's tag just read. |
d7f09764 | 1210 | Return the node read or overwriten. */ |
b8698a0f | 1211 | |
d7f09764 DN |
1212 | static struct cgraph_node * |
1213 | input_node (struct lto_file_decl_data *file_data, | |
99b1c316 | 1214 | class lto_input_block *ib, |
7380e6ef | 1215 | enum LTO_symtab_tags tag, |
5e20cdc9 | 1216 | vec<symtab_node *> nodes) |
d7f09764 | 1217 | { |
315f8c0e | 1218 | gcc::pass_manager *passes = g->get_passes (); |
d7f09764 DN |
1219 | tree fn_decl; |
1220 | struct cgraph_node *node; | |
2465dcc2 | 1221 | struct bitpack_d bp; |
d7f09764 | 1222 | unsigned decl_index; |
b66887e4 | 1223 | int ref = LCC_NOT_FOUND, ref2 = LCC_NOT_FOUND; |
91fbf0c7 | 1224 | int clone_ref; |
398f05da | 1225 | int order; |
7d57274b | 1226 | int i, count; |
aede2c10 | 1227 | tree group; |
f961457f | 1228 | const char *section; |
3c56d8d8 | 1229 | order = streamer_read_hwi (ib) + file_data->order_base; |
412288f1 | 1230 | clone_ref = streamer_read_hwi (ib); |
d7f09764 | 1231 | |
412288f1 | 1232 | decl_index = streamer_read_uhwi (ib); |
d7f09764 DN |
1233 | fn_decl = lto_file_decl_data_get_fn_decl (file_data, decl_index); |
1234 | ||
91fbf0c7 JH |
1235 | if (clone_ref != LCC_NOT_FOUND) |
1236 | { | |
d52f5295 | 1237 | node = dyn_cast<cgraph_node *> (nodes[clone_ref])->create_clone (fn_decl, |
1bad9c18 | 1238 | profile_count::uninitialized (), false, |
d52f5295 | 1239 | vNULL, false, NULL, NULL); |
91fbf0c7 | 1240 | } |
d7f09764 | 1241 | else |
bbf9ad07 JH |
1242 | { |
1243 | /* Declaration of functions can be already merged with a declaration | |
1244 | from other input file. We keep cgraph unmerged until after streaming | |
1245 | of ipa passes is done. Alays forcingly create a fresh node. */ | |
3dafb85c | 1246 | node = symtab->create_empty (); |
67348ccc | 1247 | node->decl = fn_decl; |
aab778d3 L |
1248 | if (lookup_attribute ("ifunc", DECL_ATTRIBUTES (fn_decl))) |
1249 | node->ifunc_resolver = 1; | |
d52f5295 | 1250 | node->register_symbol (); |
bbf9ad07 | 1251 | } |
d7f09764 | 1252 | |
67348ccc | 1253 | node->order = order; |
3dafb85c ML |
1254 | if (order >= symtab->order) |
1255 | symtab->order = order + 1; | |
398f05da | 1256 | |
3995f3a2 | 1257 | node->count = profile_count::stream_in (ib); |
412288f1 | 1258 | node->count_materialization_scale = streamer_read_hwi (ib); |
b8698a0f | 1259 | |
7d57274b | 1260 | count = streamer_read_hwi (ib); |
6e1aa848 | 1261 | node->ipa_transforms_to_apply = vNULL; |
7d57274b MJ |
1262 | for (i = 0; i < count; i++) |
1263 | { | |
6a5ac314 | 1264 | opt_pass *pass; |
7d57274b MJ |
1265 | int pid = streamer_read_hwi (ib); |
1266 | ||
315f8c0e DM |
1267 | gcc_assert (pid < passes->passes_by_id_size); |
1268 | pass = passes->passes_by_id[pid]; | |
6a5ac314 | 1269 | node->ipa_transforms_to_apply.safe_push ((ipa_opt_pass_d *) pass); |
7d57274b MJ |
1270 | } |
1271 | ||
7380e6ef | 1272 | if (tag == LTO_symtab_analyzed_node) |
412288f1 | 1273 | ref = streamer_read_hwi (ib); |
d7f09764 | 1274 | |
24d047a3 | 1275 | group = read_identifier (ib); |
aede2c10 JH |
1276 | if (group) |
1277 | ref2 = streamer_read_hwi (ib); | |
d7f09764 DN |
1278 | |
1279 | /* Make sure that we have not read this node before. Nodes that | |
1280 | have already been read will have their tag stored in the 'aux' | |
1281 | field. Since built-in functions can be referenced in multiple | |
1282 | functions, they are expected to be read more than once. */ | |
3d78e008 | 1283 | if (node->aux && !fndecl_built_in_p (node->decl)) |
d7f09764 | 1284 | internal_error ("bytecode stream: found multiple instances of cgraph " |
4325656f | 1285 | "node with uid %d", node->get_uid ()); |
d7f09764 | 1286 | |
86ce5d2f ML |
1287 | node->tp_first_run = streamer_read_uhwi (ib); |
1288 | ||
412288f1 | 1289 | bp = streamer_read_bitpack (ib); |
86ce5d2f | 1290 | |
533c07c5 | 1291 | input_overwrite_node (file_data, node, tag, &bp); |
d7f09764 | 1292 | |
d7f09764 | 1293 | /* Store a reference for now, and fix up later to be a pointer. */ |
a62bfab5 | 1294 | node->inlined_to = (cgraph_node *) (intptr_t) ref; |
d7f09764 | 1295 | |
aede2c10 JH |
1296 | if (group) |
1297 | { | |
1298 | node->set_comdat_group (group); | |
1299 | /* Store a reference for now, and fix up later to be a pointer. */ | |
1300 | node->same_comdat_group = (symtab_node *) (intptr_t) ref2; | |
1301 | } | |
1302 | else | |
1303 | node->same_comdat_group = (symtab_node *) (intptr_t) LCC_NOT_FOUND; | |
f961457f | 1304 | section = read_string (ib); |
24d047a3 | 1305 | if (section) |
e257a17c | 1306 | node->set_section_for_node (section); |
b66887e4 | 1307 | |
ffdcdc0b | 1308 | if (node->definition) |
c47d0034 | 1309 | { |
412288f1 DN |
1310 | int type = streamer_read_uhwi (ib); |
1311 | HOST_WIDE_INT fixed_offset = streamer_read_uhwi (ib); | |
1312 | HOST_WIDE_INT virtual_value = streamer_read_uhwi (ib); | |
44662f68 | 1313 | HOST_WIDE_INT indirect_offset = streamer_read_uhwi (ib); |
c47d0034 | 1314 | |
c47d0034 | 1315 | node->thunk.fixed_offset = fixed_offset; |
c47d0034 | 1316 | node->thunk.virtual_value = virtual_value; |
44662f68 EB |
1317 | node->thunk.indirect_offset = indirect_offset; |
1318 | node->thunk.this_adjusting = (type & 2); | |
c47d0034 | 1319 | node->thunk.virtual_offset_p = (type & 4); |
c47d0034 | 1320 | } |
67348ccc DM |
1321 | if (node->alias && !node->analyzed && node->weakref) |
1322 | node->alias_target = get_alias_symbol (node->decl); | |
634ab819 | 1323 | node->profile_id = streamer_read_hwi (ib); |
b74d8dc4 JH |
1324 | node->unit_id = streamer_read_hwi (ib) + file_data->unit_base; |
1325 | if (symtab->max_unit < node->unit_id) | |
1326 | symtab->max_unit = node->unit_id; | |
569b1784 | 1327 | if (DECL_STATIC_CONSTRUCTOR (node->decl)) |
1cff83e2 | 1328 | node->set_init_priority (streamer_read_hwi (ib)); |
569b1784 | 1329 | if (DECL_STATIC_DESTRUCTOR (node->decl)) |
1cff83e2 | 1330 | node->set_fini_priority (streamer_read_hwi (ib)); |
d5e254e1 | 1331 | |
d7f09764 DN |
1332 | return node; |
1333 | } | |
1334 | ||
2942c502 JH |
1335 | /* Read a node from input_block IB. TAG is the node's tag just read. |
1336 | Return the node read or overwriten. */ | |
1337 | ||
2c8326a5 | 1338 | static varpool_node * |
2942c502 | 1339 | input_varpool_node (struct lto_file_decl_data *file_data, |
99b1c316 | 1340 | class lto_input_block *ib) |
2942c502 JH |
1341 | { |
1342 | int decl_index; | |
1343 | tree var_decl; | |
2c8326a5 | 1344 | varpool_node *node; |
2465dcc2 | 1345 | struct bitpack_d bp; |
9f90e80a | 1346 | int ref = LCC_NOT_FOUND; |
398f05da | 1347 | int order; |
aede2c10 | 1348 | tree group; |
f961457f | 1349 | const char *section; |
2942c502 | 1350 | |
3c56d8d8 | 1351 | order = streamer_read_hwi (ib) + file_data->order_base; |
412288f1 | 1352 | decl_index = streamer_read_uhwi (ib); |
2942c502 | 1353 | var_decl = lto_file_decl_data_get_var_decl (file_data, decl_index); |
bbf9ad07 JH |
1354 | |
1355 | /* Declaration of functions can be already merged with a declaration | |
1356 | from other input file. We keep cgraph unmerged until after streaming | |
1357 | of ipa passes is done. Alays forcingly create a fresh node. */ | |
9041d2e6 | 1358 | node = varpool_node::create_empty (); |
67348ccc | 1359 | node->decl = var_decl; |
d52f5295 | 1360 | node->register_symbol (); |
bbf9ad07 | 1361 | |
67348ccc | 1362 | node->order = order; |
3dafb85c ML |
1363 | if (order >= symtab->order) |
1364 | symtab->order = order + 1; | |
67348ccc | 1365 | node->lto_file_data = file_data; |
2942c502 | 1366 | |
412288f1 | 1367 | bp = streamer_read_bitpack (ib); |
67348ccc | 1368 | node->externally_visible = bp_unpack_value (&bp, 1); |
7861b648 | 1369 | node->no_reorder = bp_unpack_value (&bp, 1); |
67348ccc DM |
1370 | node->force_output = bp_unpack_value (&bp, 1); |
1371 | node->forced_by_abi = bp_unpack_value (&bp, 1); | |
1372 | node->unique_name = bp_unpack_value (&bp, 1); | |
4a5798de | 1373 | node->body_removed = bp_unpack_value (&bp, 1); |
e257a17c | 1374 | node->implicit_section = bp_unpack_value (&bp, 1); |
6de88c6a | 1375 | node->writeonly = bp_unpack_value (&bp, 1); |
67348ccc DM |
1376 | node->definition = bp_unpack_value (&bp, 1); |
1377 | node->alias = bp_unpack_value (&bp, 1); | |
71e54687 | 1378 | node->transparent_alias = bp_unpack_value (&bp, 1); |
67348ccc | 1379 | node->weakref = bp_unpack_value (&bp, 1); |
d7ddfbcb | 1380 | node->symver = bp_unpack_value (&bp, 1); |
67348ccc DM |
1381 | node->analyzed = bp_unpack_value (&bp, 1); |
1382 | node->used_from_other_partition = bp_unpack_value (&bp, 1); | |
1383 | node->in_other_partition = bp_unpack_value (&bp, 1); | |
1384 | if (node->in_other_partition) | |
1c7b11d2 | 1385 | { |
67348ccc DM |
1386 | DECL_EXTERNAL (node->decl) = 1; |
1387 | TREE_STATIC (node->decl) = 0; | |
1c7b11d2 | 1388 | } |
67348ccc DM |
1389 | if (node->alias && !node->analyzed && node->weakref) |
1390 | node->alias_target = get_alias_symbol (node->decl); | |
56363ffd | 1391 | node->tls_model = (enum tls_model)bp_unpack_value (&bp, 3); |
eb6a09a7 | 1392 | node->used_by_single_function = (enum tls_model)bp_unpack_value (&bp, 1); |
ca280d38 | 1393 | node->dynamically_initialized = bp_unpack_value (&bp, 1); |
24d047a3 | 1394 | group = read_identifier (ib); |
aede2c10 JH |
1395 | if (group) |
1396 | { | |
1397 | node->set_comdat_group (group); | |
1398 | ref = streamer_read_hwi (ib); | |
1399 | /* Store a reference for now, and fix up later to be a pointer. */ | |
1400 | node->same_comdat_group = (symtab_node *) (intptr_t) ref; | |
1401 | } | |
1402 | else | |
1403 | node->same_comdat_group = (symtab_node *) (intptr_t) LCC_NOT_FOUND; | |
f961457f | 1404 | section = read_string (ib); |
24d047a3 | 1405 | if (section) |
e257a17c | 1406 | node->set_section_for_node (section); |
67348ccc | 1407 | node->resolution = streamer_read_enum (ib, ld_plugin_symbol_resolution, |
960bfb69 | 1408 | LDPR_NUM_KNOWN); |
b0aba46c | 1409 | verify_node_partition (node); |
2942c502 JH |
1410 | return node; |
1411 | } | |
1412 | ||
369451ec JH |
1413 | /* Read a node from input_block IB. TAG is the node's tag just read. |
1414 | Return the node read or overwriten. */ | |
1415 | ||
1416 | static void | |
99b1c316 | 1417 | input_ref (class lto_input_block *ib, |
5e20cdc9 DM |
1418 | symtab_node *referring_node, |
1419 | vec<symtab_node *> nodes) | |
369451ec | 1420 | { |
5e20cdc9 | 1421 | symtab_node *node = NULL; |
2465dcc2 | 1422 | struct bitpack_d bp; |
369451ec | 1423 | enum ipa_ref_use use; |
042ae7d2 JH |
1424 | bool speculative; |
1425 | struct ipa_ref *ref; | |
369451ec | 1426 | |
412288f1 | 1427 | bp = streamer_read_bitpack (ib); |
d5e254e1 | 1428 | use = (enum ipa_ref_use) bp_unpack_value (&bp, 3); |
042ae7d2 | 1429 | speculative = (enum ipa_ref_use) bp_unpack_value (&bp, 1); |
9771b263 | 1430 | node = nodes[streamer_read_hwi (ib)]; |
3dafb85c | 1431 | ref = referring_node->create_reference (node, use); |
042ae7d2 | 1432 | ref->speculative = speculative; |
7de90a6c | 1433 | if (is_a <cgraph_node *> (referring_node)) |
f1ba88b1 XHL |
1434 | { |
1435 | ref->lto_stmt_uid = streamer_read_hwi (ib); | |
1436 | bp = streamer_read_bitpack (ib); | |
1437 | ref->speculative_id = bp_unpack_value (&bp, 16); | |
1438 | } | |
369451ec | 1439 | } |
d7f09764 | 1440 | |
e33c6cd6 MJ |
1441 | /* Read an edge from IB. NODES points to a vector of previously read nodes for |
1442 | decoding caller and callee of the edge to be read. If INDIRECT is true, the | |
1443 | edge being read is indirect (in the sense that it has | |
1444 | indirect_unknown_callee set). */ | |
d7f09764 DN |
1445 | |
1446 | static void | |
99b1c316 | 1447 | input_edge (class lto_input_block *ib, vec<symtab_node *> nodes, |
e33c6cd6 | 1448 | bool indirect) |
d7f09764 DN |
1449 | { |
1450 | struct cgraph_node *caller, *callee; | |
1451 | struct cgraph_edge *edge; | |
f1ba88b1 | 1452 | unsigned int stmt_id, speculative_id; |
3995f3a2 | 1453 | profile_count count; |
d7f09764 | 1454 | cgraph_inline_failed_t inline_failed; |
2465dcc2 | 1455 | struct bitpack_d bp; |
5f902d76 | 1456 | int ecf_flags = 0; |
d7f09764 | 1457 | |
d52f5295 | 1458 | caller = dyn_cast<cgraph_node *> (nodes[streamer_read_hwi (ib)]); |
67348ccc | 1459 | if (caller == NULL || caller->decl == NULL_TREE) |
d7f09764 DN |
1460 | internal_error ("bytecode stream: no caller found while reading edge"); |
1461 | ||
e33c6cd6 MJ |
1462 | if (!indirect) |
1463 | { | |
d52f5295 | 1464 | callee = dyn_cast<cgraph_node *> (nodes[streamer_read_hwi (ib)]); |
67348ccc | 1465 | if (callee == NULL || callee->decl == NULL_TREE) |
e33c6cd6 MJ |
1466 | internal_error ("bytecode stream: no callee found while reading edge"); |
1467 | } | |
1468 | else | |
1469 | callee = NULL; | |
d7f09764 | 1470 | |
3995f3a2 | 1471 | count = profile_count::stream_in (ib); |
d7f09764 | 1472 | |
412288f1 | 1473 | bp = streamer_read_bitpack (ib); |
84562394 | 1474 | inline_failed = bp_unpack_enum (&bp, cgraph_inline_failed_t, CIF_N_REASONS); |
533c07c5 | 1475 | stmt_id = bp_unpack_var_len_unsigned (&bp); |
f1ba88b1 | 1476 | speculative_id = bp_unpack_value (&bp, 16); |
d7f09764 | 1477 | |
e33c6cd6 | 1478 | if (indirect) |
1bad9c18 | 1479 | edge = caller->create_indirect_edge (NULL, 0, count); |
e33c6cd6 | 1480 | else |
1bad9c18 | 1481 | edge = caller->create_edge (callee, NULL, count); |
e33c6cd6 | 1482 | |
2465dcc2 | 1483 | edge->indirect_inlining_edge = bp_unpack_value (&bp, 1); |
042ae7d2 | 1484 | edge->speculative = bp_unpack_value (&bp, 1); |
d7f09764 | 1485 | edge->lto_stmt_uid = stmt_id; |
f1ba88b1 | 1486 | edge->speculative_id = speculative_id; |
d7f09764 | 1487 | edge->inline_failed = inline_failed; |
2465dcc2 RG |
1488 | edge->call_stmt_cannot_inline_p = bp_unpack_value (&bp, 1); |
1489 | edge->can_throw_external = bp_unpack_value (&bp, 1); | |
f9bb202b | 1490 | edge->in_polymorphic_cdtor = bp_unpack_value (&bp, 1); |
5f902d76 JH |
1491 | if (indirect) |
1492 | { | |
2465dcc2 | 1493 | if (bp_unpack_value (&bp, 1)) |
5f902d76 | 1494 | ecf_flags |= ECF_CONST; |
2465dcc2 | 1495 | if (bp_unpack_value (&bp, 1)) |
5f902d76 | 1496 | ecf_flags |= ECF_PURE; |
2465dcc2 | 1497 | if (bp_unpack_value (&bp, 1)) |
5f902d76 | 1498 | ecf_flags |= ECF_NORETURN; |
2465dcc2 | 1499 | if (bp_unpack_value (&bp, 1)) |
5f902d76 | 1500 | ecf_flags |= ECF_MALLOC; |
2465dcc2 | 1501 | if (bp_unpack_value (&bp, 1)) |
5f902d76 | 1502 | ecf_flags |= ECF_NOTHROW; |
2465dcc2 | 1503 | if (bp_unpack_value (&bp, 1)) |
5f902d76 JH |
1504 | ecf_flags |= ECF_RETURNS_TWICE; |
1505 | edge->indirect_info->ecf_flags = ecf_flags; | |
f1ba88b1 XHL |
1506 | |
1507 | edge->indirect_info->num_speculative_call_targets | |
1508 | = bp_unpack_value (&bp, 16); | |
5f902d76 | 1509 | } |
d7f09764 DN |
1510 | } |
1511 | ||
1512 | ||
1513 | /* Read a cgraph from IB using the info in FILE_DATA. */ | |
1514 | ||
5e20cdc9 | 1515 | static vec<symtab_node *> |
d7f09764 | 1516 | input_cgraph_1 (struct lto_file_decl_data *file_data, |
99b1c316 | 1517 | class lto_input_block *ib) |
d7f09764 | 1518 | { |
7380e6ef | 1519 | enum LTO_symtab_tags tag; |
5e20cdc9 DM |
1520 | vec<symtab_node *> nodes = vNULL; |
1521 | symtab_node *node; | |
d7f09764 DN |
1522 | unsigned i; |
1523 | ||
7380e6ef | 1524 | tag = streamer_read_enum (ib, LTO_symtab_tags, LTO_symtab_last_tag); |
3c56d8d8 | 1525 | file_data->order_base = symtab->order; |
b74d8dc4 | 1526 | file_data->unit_base = symtab->max_unit + 1; |
d7f09764 DN |
1527 | while (tag) |
1528 | { | |
7380e6ef | 1529 | if (tag == LTO_symtab_edge) |
e33c6cd6 | 1530 | input_edge (ib, nodes, false); |
7380e6ef | 1531 | else if (tag == LTO_symtab_indirect_edge) |
e33c6cd6 | 1532 | input_edge (ib, nodes, true); |
7380e6ef JH |
1533 | else if (tag == LTO_symtab_variable) |
1534 | { | |
67348ccc | 1535 | node = input_varpool_node (file_data, ib); |
9771b263 | 1536 | nodes.safe_push (node); |
7380e6ef JH |
1537 | lto_symtab_encoder_encode (file_data->symtab_node_encoder, node); |
1538 | } | |
b8698a0f | 1539 | else |
d7f09764 | 1540 | { |
67348ccc DM |
1541 | node = input_node (file_data, ib, tag, nodes); |
1542 | if (node == NULL || node->decl == NULL_TREE) | |
d7f09764 | 1543 | internal_error ("bytecode stream: found empty cgraph node"); |
9771b263 | 1544 | nodes.safe_push (node); |
7380e6ef | 1545 | lto_symtab_encoder_encode (file_data->symtab_node_encoder, node); |
d7f09764 DN |
1546 | } |
1547 | ||
7380e6ef | 1548 | tag = streamer_read_enum (ib, LTO_symtab_tags, LTO_symtab_last_tag); |
d7f09764 DN |
1549 | } |
1550 | ||
3c56d8d8 | 1551 | lto_input_toplevel_asms (file_data, file_data->order_base); |
a9cc4458 | 1552 | |
7380e6ef | 1553 | /* AUX pointers should be all non-zero for function nodes read from the stream. */ |
b2b29377 MM |
1554 | if (flag_checking) |
1555 | { | |
1556 | FOR_EACH_VEC_ELT (nodes, i, node) | |
1557 | gcc_assert (node->aux || !is_a <cgraph_node *> (node)); | |
1558 | } | |
9771b263 | 1559 | FOR_EACH_VEC_ELT (nodes, i, node) |
d7f09764 | 1560 | { |
7380e6ef | 1561 | int ref; |
7de90a6c | 1562 | if (cgraph_node *cnode = dyn_cast <cgraph_node *> (node)) |
7380e6ef | 1563 | { |
a62bfab5 | 1564 | ref = (int) (intptr_t) cnode->inlined_to; |
7380e6ef JH |
1565 | |
1566 | /* We share declaration of builtins, so we may read same node twice. */ | |
67348ccc | 1567 | if (!node->aux) |
7380e6ef | 1568 | continue; |
67348ccc | 1569 | node->aux = NULL; |
7380e6ef JH |
1570 | |
1571 | /* Fixup inlined_to from reference to pointer. */ | |
1572 | if (ref != LCC_NOT_FOUND) | |
a62bfab5 | 1573 | dyn_cast<cgraph_node *> (node)->inlined_to |
d52f5295 | 1574 | = dyn_cast<cgraph_node *> (nodes[ref]); |
7380e6ef | 1575 | else |
a62bfab5 | 1576 | cnode->inlined_to = NULL; |
7380e6ef | 1577 | } |
b66887e4 | 1578 | |
67348ccc | 1579 | ref = (int) (intptr_t) node->same_comdat_group; |
b66887e4 JJ |
1580 | |
1581 | /* Fixup same_comdat_group from reference to pointer. */ | |
1582 | if (ref != LCC_NOT_FOUND) | |
67348ccc | 1583 | node->same_comdat_group = nodes[ref]; |
b66887e4 | 1584 | else |
67348ccc | 1585 | node->same_comdat_group = NULL; |
d7f09764 | 1586 | } |
9771b263 | 1587 | FOR_EACH_VEC_ELT (nodes, i, node) |
7de90a6c | 1588 | node->aux = is_a <cgraph_node *> (node) ? (void *)1 : NULL; |
2f41ecf5 | 1589 | return nodes; |
d7f09764 DN |
1590 | } |
1591 | ||
369451ec JH |
1592 | /* Input ipa_refs. */ |
1593 | ||
1594 | static void | |
99b1c316 | 1595 | input_refs (class lto_input_block *ib, |
5e20cdc9 | 1596 | vec<symtab_node *> nodes) |
369451ec JH |
1597 | { |
1598 | int count; | |
1599 | int idx; | |
1600 | while (true) | |
1601 | { | |
5e20cdc9 | 1602 | symtab_node *node; |
412288f1 | 1603 | count = streamer_read_uhwi (ib); |
369451ec JH |
1604 | if (!count) |
1605 | break; | |
412288f1 | 1606 | idx = streamer_read_uhwi (ib); |
9771b263 | 1607 | node = nodes[idx]; |
369451ec JH |
1608 | while (count) |
1609 | { | |
f27c1867 | 1610 | input_ref (ib, node, nodes); |
369451ec JH |
1611 | count--; |
1612 | } | |
1613 | } | |
1614 | } | |
1615 | ||
0bc1b77f JH |
1616 | /* Input profile_info from IB. */ |
1617 | static void | |
99b1c316 | 1618 | input_profile_summary (class lto_input_block *ib, |
db0bf14f | 1619 | struct lto_file_decl_data *file_data) |
0bc1b77f | 1620 | { |
412288f1 | 1621 | unsigned int runs = streamer_read_uhwi (ib); |
0bc1b77f JH |
1622 | if (runs) |
1623 | { | |
db0bf14f | 1624 | file_data->profile_info.runs = runs; |
512cc015 | 1625 | |
0208f7da JH |
1626 | /* IPA-profile computes hot bb threshold based on cumulated |
1627 | whole program profile. We need to stream it down to ltrans. */ | |
1628 | if (flag_ltrans) | |
1629 | set_hot_bb_threshold (streamer_read_gcov_count (ib)); | |
0bc1b77f JH |
1630 | } |
1631 | ||
1632 | } | |
d7f09764 | 1633 | |
db0bf14f JH |
1634 | /* Rescale profile summaries to the same number of runs in the whole unit. */ |
1635 | ||
1636 | static void | |
1637 | merge_profile_summaries (struct lto_file_decl_data **file_data_vec) | |
1638 | { | |
1639 | struct lto_file_decl_data *file_data; | |
512cc015 | 1640 | unsigned int j; |
db0bf14f JH |
1641 | gcov_unsigned_t max_runs = 0; |
1642 | struct cgraph_node *node; | |
1643 | struct cgraph_edge *edge; | |
1644 | ||
1645 | /* Find unit with maximal number of runs. If we ever get serious about | |
1646 | roundoff errors, we might also consider computing smallest common | |
1647 | multiply. */ | |
1648 | for (j = 0; (file_data = file_data_vec[j]) != NULL; j++) | |
1649 | if (max_runs < file_data->profile_info.runs) | |
1650 | max_runs = file_data->profile_info.runs; | |
1651 | ||
1652 | if (!max_runs) | |
1653 | return; | |
1654 | ||
1655 | /* Simple overflow check. We probably don't need to support that many train | |
1656 | runs. Such a large value probably imply data corruption anyway. */ | |
1657 | if (max_runs > INT_MAX / REG_BR_PROB_BASE) | |
1658 | { | |
1659 | sorry ("At most %i profile runs is supported. Perhaps corrupted profile?", | |
1660 | INT_MAX / REG_BR_PROB_BASE); | |
1661 | return; | |
1662 | } | |
1663 | ||
512cc015 ML |
1664 | profile_info = XCNEW (gcov_summary); |
1665 | profile_info->runs = max_runs; | |
db0bf14f JH |
1666 | |
1667 | /* If merging already happent at WPA time, we are done. */ | |
1668 | if (flag_ltrans) | |
1669 | return; | |
1670 | ||
1671 | /* Now compute count_materialization_scale of each node. | |
1672 | During LTRANS we already have values of count_materialization_scale | |
1673 | computed, so just update them. */ | |
65c70e6b | 1674 | FOR_EACH_FUNCTION (node) |
67348ccc DM |
1675 | if (node->lto_file_data |
1676 | && node->lto_file_data->profile_info.runs) | |
db0bf14f JH |
1677 | { |
1678 | int scale; | |
40e584a1 | 1679 | |
2730ada7 | 1680 | scale = RDIV (node->count_materialization_scale * max_runs, |
67348ccc | 1681 | node->lto_file_data->profile_info.runs); |
db0bf14f JH |
1682 | node->count_materialization_scale = scale; |
1683 | if (scale < 0) | |
40fecdd6 | 1684 | fatal_error (input_location, "Profile information in %s corrupted", |
db0bf14f JH |
1685 | file_data->file_name); |
1686 | ||
1687 | if (scale == REG_BR_PROB_BASE) | |
1688 | continue; | |
1689 | for (edge = node->callees; edge; edge = edge->next_callee) | |
1bad9c18 JH |
1690 | if (edge->count.ipa ().nonzero_p ()) |
1691 | edge->count = edge->count.apply_scale (scale, REG_BR_PROB_BASE); | |
1692 | for (edge = node->indirect_calls; edge; edge = edge->next_callee) | |
1693 | if (edge->count.ipa ().nonzero_p ()) | |
1694 | edge->count = edge->count.apply_scale (scale, REG_BR_PROB_BASE); | |
1695 | if (node->count.ipa ().nonzero_p ()) | |
1696 | node->count = node->count.apply_scale (scale, REG_BR_PROB_BASE); | |
db0bf14f JH |
1697 | } |
1698 | } | |
1699 | ||
ab96cc5b | 1700 | /* Input and merge the symtab from each of the .o files passed to |
d7f09764 DN |
1701 | lto1. */ |
1702 | ||
1703 | void | |
ab96cc5b | 1704 | input_symtab (void) |
d7f09764 DN |
1705 | { |
1706 | struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data (); | |
1707 | struct lto_file_decl_data *file_data; | |
1708 | unsigned int j = 0; | |
1709 | struct cgraph_node *node; | |
1710 | ||
1711 | while ((file_data = file_data_vec[j++])) | |
1712 | { | |
1713 | const char *data; | |
1714 | size_t len; | |
99b1c316 | 1715 | class lto_input_block *ib; |
5e20cdc9 | 1716 | vec<symtab_node *> nodes; |
d7f09764 | 1717 | |
ab96cc5b | 1718 | ib = lto_create_simple_input_block (file_data, LTO_section_symtab_nodes, |
d7f09764 | 1719 | &data, &len); |
f1e92a43 | 1720 | if (!ib) |
40fecdd6 JM |
1721 | fatal_error (input_location, |
1722 | "cannot find LTO cgraph in %s", file_data->file_name); | |
db0bf14f | 1723 | input_profile_summary (ib, file_data); |
e75f8f79 | 1724 | file_data->symtab_node_encoder = lto_symtab_encoder_new (true); |
2f41ecf5 | 1725 | nodes = input_cgraph_1 (file_data, ib); |
ab96cc5b | 1726 | lto_destroy_simple_input_block (file_data, LTO_section_symtab_nodes, |
d7f09764 | 1727 | ib, data, len); |
b8698a0f | 1728 | |
369451ec JH |
1729 | ib = lto_create_simple_input_block (file_data, LTO_section_refs, |
1730 | &data, &len); | |
f1e92a43 | 1731 | if (!ib) |
40fecdd6 | 1732 | fatal_error (input_location, "cannot find LTO section refs in %s", |
c3284718 | 1733 | file_data->file_name); |
7380e6ef | 1734 | input_refs (ib, nodes); |
369451ec JH |
1735 | lto_destroy_simple_input_block (file_data, LTO_section_refs, |
1736 | ib, data, len); | |
922f15c2 JH |
1737 | if (flag_ltrans) |
1738 | input_cgraph_opt_summary (nodes); | |
9771b263 | 1739 | nodes.release (); |
b8698a0f | 1740 | } |
beb628e1 | 1741 | |
db0bf14f | 1742 | merge_profile_summaries (file_data_vec); |
10c9ea62 | 1743 | |
d7f09764 DN |
1744 | /* Clear out the aux field that was used to store enough state to |
1745 | tell which nodes should be overwritten. */ | |
65c70e6b | 1746 | FOR_EACH_FUNCTION (node) |
d7f09764 DN |
1747 | { |
1748 | /* Some nodes may have been created by cgraph_node. This | |
1749 | happens when the callgraph contains nested functions. If the | |
1750 | node for the parent function was never emitted to the gimple | |
1751 | file, cgraph_node will create a node for it when setting the | |
1752 | context of the nested function. */ | |
67348ccc DM |
1753 | if (node->lto_file_data) |
1754 | node->aux = NULL; | |
d7f09764 DN |
1755 | } |
1756 | } | |
922f15c2 | 1757 | |
ec6fe917 IV |
1758 | /* Input function/variable tables that will allow libgomp to look up offload |
1759 | target code, and store them into OFFLOAD_FUNCS and OFFLOAD_VARS. */ | |
1760 | ||
1761 | void | |
ed5d948d | 1762 | input_offload_tables (bool do_force_output) |
ec6fe917 IV |
1763 | { |
1764 | struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data (); | |
1765 | struct lto_file_decl_data *file_data; | |
1766 | unsigned int j = 0; | |
1767 | ||
1768 | while ((file_data = file_data_vec[j++])) | |
1769 | { | |
1770 | const char *data; | |
1771 | size_t len; | |
99b1c316 | 1772 | class lto_input_block *ib |
ec6fe917 IV |
1773 | = lto_create_simple_input_block (file_data, LTO_section_offload_table, |
1774 | &data, &len); | |
1775 | if (!ib) | |
1776 | continue; | |
1777 | ||
1778 | enum LTO_symtab_tags tag | |
1779 | = streamer_read_enum (ib, LTO_symtab_tags, LTO_symtab_last_tag); | |
1780 | while (tag) | |
1781 | { | |
1782 | if (tag == LTO_symtab_unavail_node) | |
1783 | { | |
1784 | int decl_index = streamer_read_uhwi (ib); | |
1785 | tree fn_decl | |
1786 | = lto_file_decl_data_get_fn_decl (file_data, decl_index); | |
1787 | vec_safe_push (offload_funcs, fn_decl); | |
e6d6ec9e TV |
1788 | |
1789 | /* Prevent IPA from removing fn_decl as unreachable, since there | |
1790 | may be no refs from the parent function to child_fn in offload | |
1791 | LTO mode. */ | |
ed5d948d TV |
1792 | if (do_force_output) |
1793 | cgraph_node::get (fn_decl)->mark_force_output (); | |
ec6fe917 IV |
1794 | } |
1795 | else if (tag == LTO_symtab_variable) | |
1796 | { | |
1797 | int decl_index = streamer_read_uhwi (ib); | |
1798 | tree var_decl | |
1799 | = lto_file_decl_data_get_var_decl (file_data, decl_index); | |
1800 | vec_safe_push (offload_vars, var_decl); | |
e6d6ec9e TV |
1801 | |
1802 | /* Prevent IPA from removing var_decl as unused, since there | |
1803 | may be no refs to var_decl in offload LTO mode. */ | |
ed5d948d TV |
1804 | if (do_force_output) |
1805 | varpool_node::get (var_decl)->force_output = 1; | |
ec6fe917 IV |
1806 | } |
1807 | else | |
40fecdd6 JM |
1808 | fatal_error (input_location, |
1809 | "invalid offload table in %s", file_data->file_name); | |
ec6fe917 IV |
1810 | |
1811 | tag = streamer_read_enum (ib, LTO_symtab_tags, LTO_symtab_last_tag); | |
1812 | } | |
1813 | ||
1814 | lto_destroy_simple_input_block (file_data, LTO_section_offload_table, | |
1815 | ib, data, len); | |
1816 | } | |
1817 | } | |
1818 | ||
922f15c2 JH |
1819 | /* True when we need optimization summary for NODE. */ |
1820 | ||
1821 | static int | |
f27c1867 | 1822 | output_cgraph_opt_summary_p (struct cgraph_node *node) |
922f15c2 | 1823 | { |
a50e9b2f | 1824 | return ((node->clone_of || node->former_clone_of) |
644e637f | 1825 | && (node->clone.tree_map |
ff6686d2 | 1826 | || node->clone.param_adjustments)); |
922f15c2 JH |
1827 | } |
1828 | ||
ce47fda3 MJ |
1829 | /* Output optimization summary for EDGE to OB. */ |
1830 | static void | |
81fa35bd MJ |
1831 | output_edge_opt_summary (struct output_block *ob ATTRIBUTE_UNUSED, |
1832 | struct cgraph_edge *edge ATTRIBUTE_UNUSED) | |
ce47fda3 | 1833 | { |
ce47fda3 MJ |
1834 | } |
1835 | ||
922f15c2 JH |
1836 | /* Output optimization summary for NODE to OB. */ |
1837 | ||
1838 | static void | |
1839 | output_node_opt_summary (struct output_block *ob, | |
644e637f | 1840 | struct cgraph_node *node, |
f27c1867 | 1841 | lto_symtab_encoder_t encoder) |
922f15c2 | 1842 | { |
922f15c2 | 1843 | struct ipa_replace_map *map; |
922f15c2 | 1844 | int i; |
ce47fda3 | 1845 | struct cgraph_edge *e; |
922f15c2 | 1846 | |
ff6686d2 MJ |
1847 | /* TODO: Should this code be moved to ipa-param-manipulation? */ |
1848 | struct bitpack_d bp; | |
1849 | bp = bitpack_create (ob->main_stream); | |
1850 | bp_pack_value (&bp, (node->clone.param_adjustments != NULL), 1); | |
1851 | streamer_write_bitpack (&bp); | |
1852 | if (ipa_param_adjustments *adjustments = node->clone.param_adjustments) | |
26740835 | 1853 | { |
ff6686d2 MJ |
1854 | streamer_write_uhwi (ob, vec_safe_length (adjustments->m_adj_params)); |
1855 | ipa_adjusted_param *adj; | |
1856 | FOR_EACH_VEC_SAFE_ELT (adjustments->m_adj_params, i, adj) | |
1857 | { | |
1858 | bp = bitpack_create (ob->main_stream); | |
1859 | bp_pack_value (&bp, adj->base_index, IPA_PARAM_MAX_INDEX_BITS); | |
1860 | bp_pack_value (&bp, adj->prev_clone_index, IPA_PARAM_MAX_INDEX_BITS); | |
1861 | bp_pack_value (&bp, adj->op, 2); | |
1862 | bp_pack_value (&bp, adj->param_prefix_index, 2); | |
1863 | bp_pack_value (&bp, adj->prev_clone_adjustment, 1); | |
1864 | bp_pack_value (&bp, adj->reverse, 1); | |
1865 | bp_pack_value (&bp, adj->user_flag, 1); | |
1866 | streamer_write_bitpack (&bp); | |
1867 | if (adj->op == IPA_PARAM_OP_SPLIT | |
1868 | || adj->op == IPA_PARAM_OP_NEW) | |
1869 | { | |
1870 | stream_write_tree (ob, adj->type, true); | |
1871 | if (adj->op == IPA_PARAM_OP_SPLIT) | |
1872 | { | |
1873 | stream_write_tree (ob, adj->alias_ptr_type, true); | |
1874 | streamer_write_uhwi (ob, adj->unit_offset); | |
1875 | } | |
1876 | } | |
1877 | } | |
1878 | streamer_write_hwi (ob, adjustments->m_always_copy_start); | |
1879 | bp = bitpack_create (ob->main_stream); | |
1880 | bp_pack_value (&bp, node->clone.param_adjustments->m_skip_return, 1); | |
1881 | streamer_write_bitpack (&bp); | |
26740835 | 1882 | } |
ff6686d2 | 1883 | |
9771b263 DN |
1884 | streamer_write_uhwi (ob, vec_safe_length (node->clone.tree_map)); |
1885 | FOR_EACH_VEC_SAFE_ELT (node->clone.tree_map, i, map) | |
922f15c2 | 1886 | { |
49bde175 | 1887 | streamer_write_uhwi (ob, map->parm_num); |
2f13f2de | 1888 | gcc_assert (EXPR_LOCATION (map->new_tree) == UNKNOWN_LOCATION); |
b9393656 | 1889 | stream_write_tree (ob, map->new_tree, true); |
922f15c2 | 1890 | } |
644e637f | 1891 | |
67348ccc | 1892 | if (lto_symtab_encoder_in_partition_p (encoder, node)) |
644e637f MJ |
1893 | { |
1894 | for (e = node->callees; e; e = e->next_callee) | |
1895 | output_edge_opt_summary (ob, e); | |
1896 | for (e = node->indirect_calls; e; e = e->next_callee) | |
1897 | output_edge_opt_summary (ob, e); | |
1898 | } | |
922f15c2 JH |
1899 | } |
1900 | ||
1901 | /* Output optimization summaries stored in callgraph. | |
1902 | At the moment it is the clone info structure. */ | |
1903 | ||
1904 | static void | |
f27c1867 | 1905 | output_cgraph_opt_summary (void) |
922f15c2 | 1906 | { |
922f15c2 | 1907 | int i, n_nodes; |
7380e6ef | 1908 | lto_symtab_encoder_t encoder; |
922f15c2 JH |
1909 | struct output_block *ob = create_output_block (LTO_section_cgraph_opt_sum); |
1910 | unsigned count = 0; | |
1911 | ||
0b83e688 | 1912 | ob->symbol = NULL; |
7380e6ef JH |
1913 | encoder = ob->decl_state->symtab_node_encoder; |
1914 | n_nodes = lto_symtab_encoder_size (encoder); | |
922f15c2 | 1915 | for (i = 0; i < n_nodes; i++) |
5d59b5e1 | 1916 | { |
5e20cdc9 | 1917 | symtab_node *node = lto_symtab_encoder_deref (encoder, i); |
7de90a6c | 1918 | cgraph_node *cnode = dyn_cast <cgraph_node *> (node); |
5d59b5e1 LC |
1919 | if (cnode && output_cgraph_opt_summary_p (cnode)) |
1920 | count++; | |
1921 | } | |
412288f1 | 1922 | streamer_write_uhwi (ob, count); |
922f15c2 JH |
1923 | for (i = 0; i < n_nodes; i++) |
1924 | { | |
5e20cdc9 | 1925 | symtab_node *node = lto_symtab_encoder_deref (encoder, i); |
7de90a6c | 1926 | cgraph_node *cnode = dyn_cast <cgraph_node *> (node); |
5d59b5e1 | 1927 | if (cnode && output_cgraph_opt_summary_p (cnode)) |
922f15c2 | 1928 | { |
412288f1 | 1929 | streamer_write_uhwi (ob, i); |
5d59b5e1 | 1930 | output_node_opt_summary (ob, cnode, encoder); |
922f15c2 JH |
1931 | } |
1932 | } | |
1933 | produce_asm (ob, NULL); | |
1934 | destroy_output_block (ob); | |
1935 | } | |
1936 | ||
ce47fda3 MJ |
1937 | /* Input optimisation summary of EDGE. */ |
1938 | ||
1939 | static void | |
81fa35bd | 1940 | input_edge_opt_summary (struct cgraph_edge *edge ATTRIBUTE_UNUSED, |
99b1c316 | 1941 | class lto_input_block *ib_main ATTRIBUTE_UNUSED) |
ce47fda3 | 1942 | { |
ce47fda3 MJ |
1943 | } |
1944 | ||
1945 | /* Input optimisation summary of NODE. */ | |
922f15c2 JH |
1946 | |
1947 | static void | |
1948 | input_node_opt_summary (struct cgraph_node *node, | |
99b1c316 MS |
1949 | class lto_input_block *ib_main, |
1950 | class data_in *data_in) | |
922f15c2 JH |
1951 | { |
1952 | int i; | |
1953 | int count; | |
ce47fda3 | 1954 | struct cgraph_edge *e; |
922f15c2 | 1955 | |
ff6686d2 MJ |
1956 | /* TODO: Should this code be moved to ipa-param-manipulation? */ |
1957 | struct bitpack_d bp; | |
1958 | bp = streamer_read_bitpack (ib_main); | |
1959 | bool have_adjustments = bp_unpack_value (&bp, 1); | |
1960 | if (have_adjustments) | |
922f15c2 | 1961 | { |
ff6686d2 MJ |
1962 | count = streamer_read_uhwi (ib_main); |
1963 | vec<ipa_adjusted_param, va_gc> *new_params = NULL; | |
1964 | for (i = 0; i < count; i++) | |
1965 | { | |
1966 | ipa_adjusted_param adj; | |
1967 | memset (&adj, 0, sizeof (adj)); | |
1968 | bp = streamer_read_bitpack (ib_main); | |
1969 | adj.base_index = bp_unpack_value (&bp, IPA_PARAM_MAX_INDEX_BITS); | |
1970 | adj.prev_clone_index | |
1971 | = bp_unpack_value (&bp, IPA_PARAM_MAX_INDEX_BITS); | |
1972 | adj.op = (enum ipa_parm_op) bp_unpack_value (&bp, 2); | |
1973 | adj.param_prefix_index = bp_unpack_value (&bp, 2); | |
1974 | adj.prev_clone_adjustment = bp_unpack_value (&bp, 1); | |
1975 | adj.reverse = bp_unpack_value (&bp, 1); | |
1976 | adj.user_flag = bp_unpack_value (&bp, 1); | |
1977 | if (adj.op == IPA_PARAM_OP_SPLIT | |
1978 | || adj.op == IPA_PARAM_OP_NEW) | |
1979 | { | |
1980 | adj.type = stream_read_tree (ib_main, data_in); | |
1981 | if (adj.op == IPA_PARAM_OP_SPLIT) | |
1982 | { | |
1983 | adj.alias_ptr_type = stream_read_tree (ib_main, data_in); | |
1984 | adj.unit_offset = streamer_read_uhwi (ib_main); | |
1985 | } | |
1986 | } | |
1987 | vec_safe_push (new_params, adj); | |
1988 | } | |
1989 | int always_copy_start = streamer_read_hwi (ib_main); | |
1990 | bp = streamer_read_bitpack (ib_main); | |
1991 | bool skip_return = bp_unpack_value (&bp, 1); | |
1992 | node->clone.param_adjustments | |
1993 | = (new (ggc_alloc <ipa_param_adjustments> ()) | |
1994 | ipa_param_adjustments (new_params, always_copy_start, skip_return)); | |
922f15c2 | 1995 | } |
ff6686d2 | 1996 | |
412288f1 | 1997 | count = streamer_read_uhwi (ib_main); |
922f15c2 JH |
1998 | for (i = 0; i < count; i++) |
1999 | { | |
766090c2 | 2000 | struct ipa_replace_map *map = ggc_alloc<ipa_replace_map> (); |
922f15c2 | 2001 | |
9771b263 | 2002 | vec_safe_push (node->clone.tree_map, map); |
412288f1 | 2003 | map->parm_num = streamer_read_uhwi (ib_main); |
b9393656 | 2004 | map->new_tree = stream_read_tree (ib_main, data_in); |
922f15c2 | 2005 | } |
ce47fda3 MJ |
2006 | for (e = node->callees; e; e = e->next_callee) |
2007 | input_edge_opt_summary (e, ib_main); | |
2008 | for (e = node->indirect_calls; e; e = e->next_callee) | |
2009 | input_edge_opt_summary (e, ib_main); | |
922f15c2 JH |
2010 | } |
2011 | ||
2012 | /* Read section in file FILE_DATA of length LEN with data DATA. */ | |
2013 | ||
2014 | static void | |
2015 | input_cgraph_opt_section (struct lto_file_decl_data *file_data, | |
9771b263 | 2016 | const char *data, size_t len, |
5e20cdc9 | 2017 | vec<symtab_node *> nodes) |
922f15c2 JH |
2018 | { |
2019 | const struct lto_function_header *header = | |
2020 | (const struct lto_function_header *) data; | |
4ad9a9de EB |
2021 | const int cfg_offset = sizeof (struct lto_function_header); |
2022 | const int main_offset = cfg_offset + header->cfg_size; | |
2023 | const int string_offset = main_offset + header->main_size; | |
99b1c316 | 2024 | class data_in *data_in; |
922f15c2 JH |
2025 | unsigned int i; |
2026 | unsigned int count; | |
2027 | ||
207c68cd | 2028 | lto_input_block ib_main ((const char *) data + main_offset, |
db847fa8 | 2029 | header->main_size, file_data->mode_table); |
922f15c2 JH |
2030 | |
2031 | data_in = | |
2032 | lto_data_in_create (file_data, (const char *) data + string_offset, | |
6e1aa848 | 2033 | header->string_size, vNULL); |
412288f1 | 2034 | count = streamer_read_uhwi (&ib_main); |
922f15c2 JH |
2035 | |
2036 | for (i = 0; i < count; i++) | |
2037 | { | |
412288f1 | 2038 | int ref = streamer_read_uhwi (&ib_main); |
d52f5295 | 2039 | input_node_opt_summary (dyn_cast<cgraph_node *> (nodes[ref]), |
922f15c2 JH |
2040 | &ib_main, data_in); |
2041 | } | |
839d549b | 2042 | lto_free_section_data (file_data, LTO_section_cgraph_opt_sum, NULL, data, |
922f15c2 JH |
2043 | len); |
2044 | lto_data_in_delete (data_in); | |
2045 | } | |
2046 | ||
2047 | /* Input optimization summary of cgraph. */ | |
2048 | ||
2049 | static void | |
5e20cdc9 | 2050 | input_cgraph_opt_summary (vec<symtab_node *> nodes) |
922f15c2 JH |
2051 | { |
2052 | struct lto_file_decl_data **file_data_vec = lto_get_file_decl_data (); | |
2053 | struct lto_file_decl_data *file_data; | |
2054 | unsigned int j = 0; | |
2055 | ||
2056 | while ((file_data = file_data_vec[j++])) | |
2057 | { | |
2058 | size_t len; | |
3c56d8d8 ML |
2059 | const char *data |
2060 | = lto_get_summary_section_data (file_data, LTO_section_cgraph_opt_sum, | |
2061 | &len); | |
922f15c2 JH |
2062 | if (data) |
2063 | input_cgraph_opt_section (file_data, data, len, nodes); | |
2064 | } | |
2065 | } |