1 /* Write and read the cgraph to the memory mapped representation of a
4 Copyright 2009, 2010 Free Software Foundation, Inc.
5 Contributed by Kenneth Zadeck <zadeck@naturalbridge.com>
7 This file is part of GCC.
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
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
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/>. */
25 #include "coretypes.h"
34 #include "langhooks.h"
35 #include "basic-block.h"
36 #include "tree-flow.h"
40 #include "diagnostic-core.h"
45 #include "pointer-set.h"
46 #include "lto-streamer.h"
49 static void output_varpool (cgraph_node_set
, varpool_node_set
);
50 static void output_cgraph_opt_summary (void);
51 static void input_cgraph_opt_summary (VEC (cgraph_node_ptr
, heap
) * nodes
);
54 /* Cgraph streaming is organized as set of record whose type
55 is indicated by a tag. */
58 /* Must leave 0 for the stopper. */
60 /* Cgraph node without body available. */
61 LTO_cgraph_unavail_node
= 1,
62 /* Cgraph node with function body. */
63 LTO_cgraph_analyzed_node
,
66 LTO_cgraph_indirect_edge
69 /* Create a new cgraph encoder. */
72 lto_cgraph_encoder_new (void)
74 lto_cgraph_encoder_t encoder
= XCNEW (struct lto_cgraph_encoder_d
);
75 encoder
->map
= pointer_map_create ();
76 encoder
->nodes
= NULL
;
77 encoder
->body
= pointer_set_create ();
82 /* Delete ENCODER and its components. */
85 lto_cgraph_encoder_delete (lto_cgraph_encoder_t encoder
)
87 VEC_free (cgraph_node_ptr
, heap
, encoder
->nodes
);
88 pointer_map_destroy (encoder
->map
);
89 pointer_set_destroy (encoder
->body
);
94 /* Return the existing reference number of NODE in the cgraph encoder in
95 output block OB. Assign a new reference if this is the first time
99 lto_cgraph_encoder_encode (lto_cgraph_encoder_t encoder
,
100 struct cgraph_node
*node
)
105 slot
= pointer_map_contains (encoder
->map
, node
);
108 ref
= VEC_length (cgraph_node_ptr
, encoder
->nodes
);
109 slot
= pointer_map_insert (encoder
->map
, node
);
110 *slot
= (void *) (intptr_t) ref
;
111 VEC_safe_push (cgraph_node_ptr
, heap
, encoder
->nodes
, node
);
114 ref
= (int) (intptr_t) *slot
;
119 #define LCC_NOT_FOUND (-1)
121 /* Look up NODE in encoder. Return NODE's reference if it has been encoded
122 or LCC_NOT_FOUND if it is not there. */
125 lto_cgraph_encoder_lookup (lto_cgraph_encoder_t encoder
,
126 struct cgraph_node
*node
)
128 void **slot
= pointer_map_contains (encoder
->map
, node
);
129 return (slot
? (int) (intptr_t) *slot
: LCC_NOT_FOUND
);
133 /* Return the cgraph node corresponding to REF using ENCODER. */
136 lto_cgraph_encoder_deref (lto_cgraph_encoder_t encoder
, int ref
)
138 if (ref
== LCC_NOT_FOUND
)
141 return VEC_index (cgraph_node_ptr
, encoder
->nodes
, ref
);
145 /* Return TRUE if we should encode initializer of NODE (if any). */
148 lto_cgraph_encoder_encode_body_p (lto_cgraph_encoder_t encoder
,
149 struct cgraph_node
*node
)
151 return pointer_set_contains (encoder
->body
, node
);
154 /* Return TRUE if we should encode body of NODE (if any). */
157 lto_set_cgraph_encoder_encode_body (lto_cgraph_encoder_t encoder
,
158 struct cgraph_node
*node
)
160 pointer_set_insert (encoder
->body
, node
);
163 /* Create a new varpool encoder. */
165 lto_varpool_encoder_t
166 lto_varpool_encoder_new (void)
168 lto_varpool_encoder_t encoder
= XCNEW (struct lto_varpool_encoder_d
);
169 encoder
->map
= pointer_map_create ();
170 encoder
->initializer
= pointer_set_create ();
171 encoder
->nodes
= NULL
;
176 /* Delete ENCODER and its components. */
179 lto_varpool_encoder_delete (lto_varpool_encoder_t encoder
)
181 VEC_free (varpool_node_ptr
, heap
, encoder
->nodes
);
182 pointer_map_destroy (encoder
->map
);
183 pointer_set_destroy (encoder
->initializer
);
188 /* Return the existing reference number of NODE in the varpool encoder in
189 output block OB. Assign a new reference if this is the first time
193 lto_varpool_encoder_encode (lto_varpool_encoder_t encoder
,
194 struct varpool_node
*node
)
199 slot
= pointer_map_contains (encoder
->map
, node
);
202 ref
= VEC_length (varpool_node_ptr
, encoder
->nodes
);
203 slot
= pointer_map_insert (encoder
->map
, node
);
204 *slot
= (void *) (intptr_t) ref
;
205 VEC_safe_push (varpool_node_ptr
, heap
, encoder
->nodes
, node
);
208 ref
= (int) (intptr_t) *slot
;
213 /* Look up NODE in encoder. Return NODE's reference if it has been encoded
214 or LCC_NOT_FOUND if it is not there. */
217 lto_varpool_encoder_lookup (lto_varpool_encoder_t encoder
,
218 struct varpool_node
*node
)
220 void **slot
= pointer_map_contains (encoder
->map
, node
);
221 return (slot
? (int) (intptr_t) *slot
: LCC_NOT_FOUND
);
225 /* Return the varpool node corresponding to REF using ENCODER. */
227 struct varpool_node
*
228 lto_varpool_encoder_deref (lto_varpool_encoder_t encoder
, int ref
)
230 if (ref
== LCC_NOT_FOUND
)
233 return VEC_index (varpool_node_ptr
, encoder
->nodes
, ref
);
237 /* Return TRUE if we should encode initializer of NODE (if any). */
240 lto_varpool_encoder_encode_initializer_p (lto_varpool_encoder_t encoder
,
241 struct varpool_node
*node
)
243 return pointer_set_contains (encoder
->initializer
, node
);
246 /* Return TRUE if we should encode initializer of NODE (if any). */
249 lto_set_varpool_encoder_encode_initializer (lto_varpool_encoder_t encoder
,
250 struct varpool_node
*node
)
252 pointer_set_insert (encoder
->initializer
, node
);
255 /* Output the cgraph EDGE to OB using ENCODER. */
258 lto_output_edge (struct lto_simple_output_block
*ob
, struct cgraph_edge
*edge
,
259 lto_cgraph_encoder_t encoder
)
265 if (edge
->indirect_unknown_callee
)
266 lto_output_uleb128_stream (ob
->main_stream
, LTO_cgraph_indirect_edge
);
268 lto_output_uleb128_stream (ob
->main_stream
, LTO_cgraph_edge
);
270 ref
= lto_cgraph_encoder_lookup (encoder
, edge
->caller
);
271 gcc_assert (ref
!= LCC_NOT_FOUND
);
272 lto_output_sleb128_stream (ob
->main_stream
, ref
);
274 if (!edge
->indirect_unknown_callee
)
276 ref
= lto_cgraph_encoder_lookup (encoder
, edge
->callee
);
277 gcc_assert (ref
!= LCC_NOT_FOUND
);
278 lto_output_sleb128_stream (ob
->main_stream
, ref
);
281 lto_output_sleb128_stream (ob
->main_stream
, edge
->count
);
283 bp
= bitpack_create (ob
->main_stream
);
284 uid
= flag_wpa
? edge
->lto_stmt_uid
: gimple_uid (edge
->call_stmt
);
285 bp_pack_value (&bp
, uid
, HOST_BITS_PER_INT
);
286 bp_pack_value (&bp
, edge
->inline_failed
, HOST_BITS_PER_INT
);
287 bp_pack_value (&bp
, edge
->frequency
, HOST_BITS_PER_INT
);
288 bp_pack_value (&bp
, edge
->loop_nest
, 30);
289 bp_pack_value (&bp
, edge
->indirect_inlining_edge
, 1);
290 bp_pack_value (&bp
, edge
->call_stmt_cannot_inline_p
, 1);
291 bp_pack_value (&bp
, edge
->can_throw_external
, 1);
292 if (edge
->indirect_unknown_callee
)
294 int flags
= edge
->indirect_info
->ecf_flags
;
295 bp_pack_value (&bp
, (flags
& ECF_CONST
) != 0, 1);
296 bp_pack_value (&bp
, (flags
& ECF_PURE
) != 0, 1);
297 bp_pack_value (&bp
, (flags
& ECF_NORETURN
) != 0, 1);
298 bp_pack_value (&bp
, (flags
& ECF_MALLOC
) != 0, 1);
299 bp_pack_value (&bp
, (flags
& ECF_NOTHROW
) != 0, 1);
300 bp_pack_value (&bp
, (flags
& ECF_RETURNS_TWICE
) != 0, 1);
301 /* Flags that should not appear on indirect calls. */
302 gcc_assert (!(flags
& (ECF_LOOPING_CONST_OR_PURE
307 lto_output_bitpack (&bp
);
310 /* Return if LIST contain references from other partitions. */
313 referenced_from_other_partition_p (struct ipa_ref_list
*list
, cgraph_node_set set
,
314 varpool_node_set vset
)
318 for (i
= 0; ipa_ref_list_refering_iterate (list
, i
, ref
); i
++)
320 if (ref
->refering_type
== IPA_REF_CGRAPH
)
322 if (ipa_ref_refering_node (ref
)->in_other_partition
323 || !cgraph_node_in_set_p (ipa_ref_refering_node (ref
), set
))
328 if (ipa_ref_refering_varpool_node (ref
)->in_other_partition
329 || !varpool_node_in_set_p (ipa_ref_refering_varpool_node (ref
),
337 /* Return true when node is reachable from other partition. */
340 reachable_from_other_partition_p (struct cgraph_node
*node
, cgraph_node_set set
)
342 struct cgraph_edge
*e
;
345 if (node
->global
.inlined_to
)
347 for (e
= node
->callers
; e
; e
= e
->next_caller
)
348 if (e
->caller
->in_other_partition
349 || !cgraph_node_in_set_p (e
->caller
, set
))
354 /* Return if LIST contain references from other partitions. */
357 referenced_from_this_partition_p (struct ipa_ref_list
*list
, cgraph_node_set set
,
358 varpool_node_set vset
)
362 for (i
= 0; ipa_ref_list_refering_iterate (list
, i
, ref
); i
++)
364 if (ref
->refering_type
== IPA_REF_CGRAPH
)
366 if (cgraph_node_in_set_p (ipa_ref_refering_node (ref
), set
))
371 if (varpool_node_in_set_p (ipa_ref_refering_varpool_node (ref
),
379 /* Return true when node is reachable from other partition. */
382 reachable_from_this_partition_p (struct cgraph_node
*node
, cgraph_node_set set
)
384 struct cgraph_edge
*e
;
387 if (node
->global
.inlined_to
)
389 for (e
= node
->callers
; e
; e
= e
->next_caller
)
390 if (cgraph_node_in_set_p (e
->caller
, set
))
395 /* Output the cgraph NODE to OB. ENCODER is used to find the
396 reference number of NODE->inlined_to. SET is the set of nodes we
397 are writing to the current file. If NODE is not in SET, then NODE
398 is a boundary of a cgraph_node_set and we pretend NODE just has a
399 decl and no callees. WRITTEN_DECLS is the set of FUNCTION_DECLs
400 that have had their callgraph node written so far. This is used to
401 determine if NODE is a clone of a previously written node. */
404 lto_output_node (struct lto_simple_output_block
*ob
, struct cgraph_node
*node
,
405 lto_cgraph_encoder_t encoder
, cgraph_node_set set
,
406 varpool_node_set vset
)
412 bool in_other_partition
= false;
413 struct cgraph_node
*clone_of
;
415 boundary_p
= !cgraph_node_in_set_p (node
, set
);
417 if (node
->analyzed
&& !boundary_p
)
418 tag
= LTO_cgraph_analyzed_node
;
420 tag
= LTO_cgraph_unavail_node
;
422 lto_output_uleb128_stream (ob
->main_stream
, tag
);
424 /* In WPA mode, we only output part of the call-graph. Also, we
425 fake cgraph node attributes. There are two cases that we care.
427 Boundary nodes: There are nodes that are not part of SET but are
428 called from within SET. We artificially make them look like
429 externally visible nodes with no function body.
431 Cherry-picked nodes: These are nodes we pulled from other
432 translation units into SET during IPA-inlining. We make them as
433 local static nodes to prevent clashes with other local statics. */
434 if (boundary_p
&& node
->analyzed
)
436 /* Inline clones can not be part of boundary.
437 gcc_assert (!node->global.inlined_to);
439 FIXME: At the moment they can be, when partition contains an inline
440 clone that is clone of inline clone from outside partition. We can
441 reshape the clone tree and make other tree to be the root, but it
442 needs a bit extra work and will be promplty done by cgraph_remove_node
443 after reading back. */
444 in_other_partition
= 1;
447 clone_of
= node
->clone_of
;
449 && (ref
= lto_cgraph_encoder_lookup (encoder
, node
->clone_of
)) == LCC_NOT_FOUND
)
450 if (clone_of
->prev_sibling_clone
)
451 clone_of
= clone_of
->prev_sibling_clone
;
453 clone_of
= clone_of
->clone_of
;
455 lto_output_sleb128_stream (ob
->main_stream
, LCC_NOT_FOUND
);
457 lto_output_sleb128_stream (ob
->main_stream
, ref
);
460 lto_output_fn_decl_index (ob
->decl_state
, ob
->main_stream
, node
->decl
);
461 lto_output_sleb128_stream (ob
->main_stream
, node
->count
);
463 if (tag
== LTO_cgraph_analyzed_node
)
465 lto_output_sleb128_stream (ob
->main_stream
,
466 node
->local
.inline_summary
.estimated_self_stack_size
);
467 lto_output_sleb128_stream (ob
->main_stream
,
468 node
->local
.inline_summary
.self_size
);
469 lto_output_sleb128_stream (ob
->main_stream
,
470 node
->local
.inline_summary
.size_inlining_benefit
);
471 lto_output_sleb128_stream (ob
->main_stream
,
472 node
->local
.inline_summary
.self_time
);
473 lto_output_sleb128_stream (ob
->main_stream
,
474 node
->local
.inline_summary
.time_inlining_benefit
);
475 if (node
->global
.inlined_to
)
477 ref
= lto_cgraph_encoder_lookup (encoder
, node
->global
.inlined_to
);
478 gcc_assert (ref
!= LCC_NOT_FOUND
);
483 lto_output_sleb128_stream (ob
->main_stream
, ref
);
486 if (node
->same_comdat_group
&& !boundary_p
)
488 ref
= lto_cgraph_encoder_lookup (encoder
, node
->same_comdat_group
);
489 gcc_assert (ref
!= LCC_NOT_FOUND
);
493 lto_output_sleb128_stream (ob
->main_stream
, ref
);
495 bp
= bitpack_create (ob
->main_stream
);
496 bp_pack_value (&bp
, node
->local
.local
, 1);
497 bp_pack_value (&bp
, node
->local
.externally_visible
, 1);
498 bp_pack_value (&bp
, node
->local
.finalized
, 1);
499 bp_pack_value (&bp
, node
->local
.inlinable
, 1);
500 bp_pack_value (&bp
, node
->local
.versionable
, 1);
501 bp_pack_value (&bp
, node
->local
.disregard_inline_limits
, 1);
502 bp_pack_value (&bp
, node
->local
.redefined_extern_inline
, 1);
503 bp_pack_value (&bp
, node
->local
.vtable_method
, 1);
504 bp_pack_value (&bp
, node
->needed
, 1);
505 bp_pack_value (&bp
, node
->address_taken
, 1);
506 bp_pack_value (&bp
, node
->abstract_and_needed
, 1);
507 bp_pack_value (&bp
, tag
== LTO_cgraph_analyzed_node
508 && !DECL_EXTERNAL (node
->decl
)
509 && !DECL_COMDAT (node
->decl
)
510 && (reachable_from_other_partition_p (node
, set
)
511 || referenced_from_other_partition_p (&node
->ref_list
, set
, vset
)), 1);
512 bp_pack_value (&bp
, node
->lowered
, 1);
513 bp_pack_value (&bp
, in_other_partition
, 1);
514 bp_pack_value (&bp
, node
->alias
, 1);
515 bp_pack_value (&bp
, node
->finalized_by_frontend
, 1);
516 bp_pack_value (&bp
, node
->frequency
, 2);
517 lto_output_bitpack (&bp
);
521 struct cgraph_node
*alias
;
522 unsigned long alias_count
= 1;
523 for (alias
= node
->same_body
; alias
->next
; alias
= alias
->next
)
525 lto_output_uleb128_stream (ob
->main_stream
, alias_count
);
528 lto_output_fn_decl_index (ob
->decl_state
, ob
->main_stream
,
530 if (alias
->thunk
.thunk_p
)
532 lto_output_uleb128_stream
534 1 + (alias
->thunk
.this_adjusting
!= 0) * 2
535 + (alias
->thunk
.virtual_offset_p
!= 0) * 4);
536 lto_output_uleb128_stream (ob
->main_stream
,
537 alias
->thunk
.fixed_offset
);
538 lto_output_uleb128_stream (ob
->main_stream
,
539 alias
->thunk
.virtual_value
);
540 lto_output_fn_decl_index (ob
->decl_state
, ob
->main_stream
,
545 lto_output_uleb128_stream (ob
->main_stream
, 0);
546 lto_output_fn_decl_index (ob
->decl_state
, ob
->main_stream
,
549 alias
= alias
->previous
;
554 lto_output_uleb128_stream (ob
->main_stream
, 0);
557 /* Output the varpool NODE to OB.
558 If NODE is not in SET, then NODE is a boundary. */
561 lto_output_varpool_node (struct lto_simple_output_block
*ob
, struct varpool_node
*node
,
562 lto_varpool_encoder_t varpool_encoder
,
563 cgraph_node_set set
, varpool_node_set vset
)
565 bool boundary_p
= !varpool_node_in_set_p (node
, vset
) && node
->analyzed
;
567 struct varpool_node
*alias
;
571 lto_output_var_decl_index (ob
->decl_state
, ob
->main_stream
, node
->decl
);
572 bp
= bitpack_create (ob
->main_stream
);
573 bp_pack_value (&bp
, node
->externally_visible
, 1);
574 bp_pack_value (&bp
, node
->force_output
, 1);
575 bp_pack_value (&bp
, node
->finalized
, 1);
576 bp_pack_value (&bp
, node
->alias
, 1);
577 gcc_assert (!node
->alias
|| !node
->extra_name
);
578 gcc_assert (node
->finalized
|| !node
->analyzed
);
579 gcc_assert (node
->needed
);
580 /* Constant pool initializers can be de-unified into individual ltrans units.
581 FIXME: Alternatively at -Os we may want to avoid generating for them the local
582 labels and share them across LTRANS partitions. */
583 if (DECL_IN_CONSTANT_POOL (node
->decl
)
584 && !DECL_COMDAT (node
->decl
))
586 bp_pack_value (&bp
, 0, 1); /* used_from_other_parition. */
587 bp_pack_value (&bp
, 0, 1); /* in_other_partition. */
591 bp_pack_value (&bp
, node
->analyzed
592 && referenced_from_other_partition_p (&node
->ref_list
,
594 bp_pack_value (&bp
, boundary_p
, 1); /* in_other_partition. */
596 /* Also emit any extra name aliases. */
597 for (alias
= node
->extra_name
; alias
; alias
= alias
->next
)
599 bp_pack_value (&bp
, count
!= 0, 1);
600 lto_output_bitpack (&bp
);
601 if (node
->same_comdat_group
&& !boundary_p
)
603 ref
= lto_varpool_encoder_lookup (varpool_encoder
, node
->same_comdat_group
);
604 gcc_assert (ref
!= LCC_NOT_FOUND
);
608 lto_output_sleb128_stream (ob
->main_stream
, ref
);
612 lto_output_uleb128_stream (ob
->main_stream
, count
);
613 for (alias
= node
->extra_name
; alias
; alias
= alias
->next
)
614 lto_output_var_decl_index (ob
->decl_state
, ob
->main_stream
, alias
->decl
);
618 /* Output the varpool NODE to OB.
619 If NODE is not in SET, then NODE is a boundary. */
622 lto_output_ref (struct lto_simple_output_block
*ob
, struct ipa_ref
*ref
,
623 lto_cgraph_encoder_t encoder
,
624 lto_varpool_encoder_t varpool_encoder
)
627 bp
= bitpack_create (ob
->main_stream
);
628 bp_pack_value (&bp
, ref
->refered_type
, 1);
629 bp_pack_value (&bp
, ref
->use
, 2);
630 lto_output_bitpack (&bp
);
631 if (ref
->refered_type
== IPA_REF_CGRAPH
)
633 int nref
= lto_cgraph_encoder_lookup (encoder
, ipa_ref_node (ref
));
634 gcc_assert (nref
!= LCC_NOT_FOUND
);
635 lto_output_sleb128_stream (ob
->main_stream
, nref
);
639 int nref
= lto_varpool_encoder_lookup (varpool_encoder
,
640 ipa_ref_varpool_node (ref
));
641 gcc_assert (nref
!= LCC_NOT_FOUND
);
642 lto_output_sleb128_stream (ob
->main_stream
, nref
);
646 /* Stream out profile_summary to OB. */
649 output_profile_summary (struct lto_simple_output_block
*ob
)
653 /* We do not output num, it is not terribly useful. */
654 gcc_assert (profile_info
->runs
);
655 lto_output_uleb128_stream (ob
->main_stream
, profile_info
->runs
);
656 lto_output_sleb128_stream (ob
->main_stream
, profile_info
->sum_all
);
657 lto_output_sleb128_stream (ob
->main_stream
, profile_info
->run_max
);
658 lto_output_sleb128_stream (ob
->main_stream
, profile_info
->sum_max
);
661 lto_output_uleb128_stream (ob
->main_stream
, 0);
664 /* Add NODE into encoder as well as nodes it is cloned from.
665 Do it in a way so clones appear first. */
668 add_node_to (lto_cgraph_encoder_t encoder
, struct cgraph_node
*node
,
672 add_node_to (encoder
, node
->clone_of
, include_body
);
673 else if (include_body
)
674 lto_set_cgraph_encoder_encode_body (encoder
, node
);
675 lto_cgraph_encoder_encode (encoder
, node
);
678 /* Add all references in LIST to encoders. */
681 add_references (lto_cgraph_encoder_t encoder
,
682 lto_varpool_encoder_t varpool_encoder
,
683 struct ipa_ref_list
*list
)
687 for (i
= 0; ipa_ref_list_reference_iterate (list
, i
, ref
); i
++)
688 if (ref
->refered_type
== IPA_REF_CGRAPH
)
689 add_node_to (encoder
, ipa_ref_node (ref
), false);
692 struct varpool_node
*vnode
= ipa_ref_varpool_node (ref
);
693 lto_varpool_encoder_encode (varpool_encoder
, vnode
);
697 /* Output all callees or indirect outgoing edges. EDGE must be the first such
701 output_outgoing_cgraph_edges (struct cgraph_edge
*edge
,
702 struct lto_simple_output_block
*ob
,
703 lto_cgraph_encoder_t encoder
)
708 /* Output edges in backward direction, so the reconstructed callgraph match
709 and it is easy to associate call sites in the IPA pass summaries. */
710 while (edge
->next_callee
)
711 edge
= edge
->next_callee
;
712 for (; edge
; edge
= edge
->prev_callee
)
713 lto_output_edge (ob
, edge
, encoder
);
716 /* Output the part of the cgraph in SET. */
719 output_refs (cgraph_node_set set
, varpool_node_set vset
,
720 lto_cgraph_encoder_t encoder
,
721 lto_varpool_encoder_t varpool_encoder
)
723 cgraph_node_set_iterator csi
;
724 varpool_node_set_iterator vsi
;
725 struct lto_simple_output_block
*ob
;
730 ob
= lto_create_simple_output_block (LTO_section_refs
);
732 for (csi
= csi_start (set
); !csi_end_p (csi
); csi_next (&csi
))
734 struct cgraph_node
*node
= csi_node (csi
);
736 count
= ipa_ref_list_nreferences (&node
->ref_list
);
739 lto_output_uleb128_stream (ob
->main_stream
, count
);
740 lto_output_uleb128_stream (ob
->main_stream
,
741 lto_cgraph_encoder_lookup (encoder
, node
));
742 for (i
= 0; ipa_ref_list_reference_iterate (&node
->ref_list
, i
, ref
); i
++)
743 lto_output_ref (ob
, ref
, encoder
, varpool_encoder
);
747 lto_output_uleb128_stream (ob
->main_stream
, 0);
749 for (vsi
= vsi_start (vset
); !vsi_end_p (vsi
); vsi_next (&vsi
))
751 struct varpool_node
*node
= vsi_node (vsi
);
753 count
= ipa_ref_list_nreferences (&node
->ref_list
);
756 lto_output_uleb128_stream (ob
->main_stream
, count
);
757 lto_output_uleb128_stream (ob
->main_stream
,
758 lto_varpool_encoder_lookup (varpool_encoder
,
760 for (i
= 0; ipa_ref_list_reference_iterate (&node
->ref_list
, i
, ref
); i
++)
761 lto_output_ref (ob
, ref
, encoder
, varpool_encoder
);
765 lto_output_uleb128_stream (ob
->main_stream
, 0);
767 lto_destroy_simple_output_block (ob
);
770 /* Find out all cgraph and varpool nodes we want to encode in current unit
771 and insert them to encoders. */
773 compute_ltrans_boundary (struct lto_out_decl_state
*state
,
774 cgraph_node_set set
, varpool_node_set vset
)
776 struct cgraph_node
*node
;
777 cgraph_node_set_iterator csi
;
778 varpool_node_set_iterator vsi
;
779 struct cgraph_edge
*edge
;
781 lto_cgraph_encoder_t encoder
;
782 lto_varpool_encoder_t varpool_encoder
;
784 encoder
= state
->cgraph_node_encoder
= lto_cgraph_encoder_new ();
785 varpool_encoder
= state
->varpool_node_encoder
= lto_varpool_encoder_new ();
787 /* Go over all the nodes in SET and assign references. */
788 for (csi
= csi_start (set
); !csi_end_p (csi
); csi_next (&csi
))
790 node
= csi_node (csi
);
791 add_node_to (encoder
, node
, true);
792 add_references (encoder
, varpool_encoder
, &node
->ref_list
);
794 for (vsi
= vsi_start (vset
); !vsi_end_p (vsi
); vsi_next (&vsi
))
796 struct varpool_node
*vnode
= vsi_node (vsi
);
797 gcc_assert (!vnode
->alias
);
798 lto_varpool_encoder_encode (varpool_encoder
, vnode
);
799 lto_set_varpool_encoder_encode_initializer (varpool_encoder
, vnode
);
800 add_references (encoder
, varpool_encoder
, &vnode
->ref_list
);
802 /* Pickle in also the initializer of all referenced readonly variables
803 to help folding. Constant pool variables are not shared, so we must
805 for (i
= 0; i
< lto_varpool_encoder_size (varpool_encoder
); i
++)
807 struct varpool_node
*vnode
= lto_varpool_encoder_deref (varpool_encoder
, i
);
808 if (DECL_INITIAL (vnode
->decl
)
809 && !lto_varpool_encoder_encode_initializer_p (varpool_encoder
,
811 && (DECL_IN_CONSTANT_POOL (vnode
->decl
)
812 || TREE_READONLY (vnode
->decl
)))
814 lto_set_varpool_encoder_encode_initializer (varpool_encoder
, vnode
);
815 add_references (encoder
, varpool_encoder
, &vnode
->ref_list
);
819 /* Go over all the nodes again to include callees that are not in
821 for (csi
= csi_start (set
); !csi_end_p (csi
); csi_next (&csi
))
823 node
= csi_node (csi
);
824 for (edge
= node
->callees
; edge
; edge
= edge
->next_callee
)
826 struct cgraph_node
*callee
= edge
->callee
;
827 if (!cgraph_node_in_set_p (callee
, set
))
829 /* We should have moved all the inlines. */
830 gcc_assert (!callee
->global
.inlined_to
);
831 add_node_to (encoder
, callee
, false);
837 /* Output the part of the cgraph in SET. */
840 output_cgraph (cgraph_node_set set
, varpool_node_set vset
)
842 struct cgraph_node
*node
;
843 struct lto_simple_output_block
*ob
;
844 cgraph_node_set_iterator csi
;
846 lto_cgraph_encoder_t encoder
;
847 lto_varpool_encoder_t varpool_encoder
;
848 struct cgraph_asm_node
*can
;
851 output_cgraph_opt_summary ();
853 ob
= lto_create_simple_output_block (LTO_section_cgraph
);
855 output_profile_summary (ob
);
857 /* An encoder for cgraph nodes should have been created by
858 ipa_write_summaries_1. */
859 gcc_assert (ob
->decl_state
->cgraph_node_encoder
);
860 gcc_assert (ob
->decl_state
->varpool_node_encoder
);
861 encoder
= ob
->decl_state
->cgraph_node_encoder
;
862 varpool_encoder
= ob
->decl_state
->varpool_node_encoder
;
864 /* Write out the nodes. We must first output a node and then its clones,
865 otherwise at a time reading back the node there would be nothing to clone
867 n_nodes
= lto_cgraph_encoder_size (encoder
);
868 for (i
= 0; i
< n_nodes
; i
++)
870 node
= lto_cgraph_encoder_deref (encoder
, i
);
871 lto_output_node (ob
, node
, encoder
, set
, vset
);
874 /* Go over the nodes in SET again to write edges. */
875 for (csi
= csi_start (set
); !csi_end_p (csi
); csi_next (&csi
))
877 node
= csi_node (csi
);
878 output_outgoing_cgraph_edges (node
->callees
, ob
, encoder
);
879 output_outgoing_cgraph_edges (node
->indirect_calls
, ob
, encoder
);
882 lto_output_uleb128_stream (ob
->main_stream
, 0);
884 /* Emit toplevel asms.
885 When doing WPA we must output every asm just once. Since we do not partition asm
886 nodes at all, output them to first output. This is kind of hack, but should work
888 if (!asm_nodes_output
)
890 asm_nodes_output
= true;
891 for (can
= cgraph_asm_nodes
; can
; can
= can
->next
)
893 int len
= TREE_STRING_LENGTH (can
->asm_str
);
894 lto_output_uleb128_stream (ob
->main_stream
, len
);
895 for (i
= 0; i
< len
; ++i
)
896 lto_output_1_stream (ob
->main_stream
,
897 TREE_STRING_POINTER (can
->asm_str
)[i
]);
901 lto_output_uleb128_stream (ob
->main_stream
, 0);
903 lto_destroy_simple_output_block (ob
);
904 output_varpool (set
, vset
);
905 output_refs (set
, vset
, encoder
, varpool_encoder
);
908 /* Overwrite the information in NODE based on FILE_DATA, TAG, FLAGS,
909 STACK_SIZE, SELF_TIME and SELF_SIZE. This is called either to initialize
910 NODE or to replace the values in it, for instance because the first
911 time we saw it, the function body was not available but now it
912 is. BP is a bitpack with all the bitflags for NODE read from the
916 input_overwrite_node (struct lto_file_decl_data
*file_data
,
917 struct cgraph_node
*node
,
918 enum LTO_cgraph_tags tag
,
919 struct bitpack_d
*bp
,
920 unsigned int stack_size
,
921 unsigned int self_time
,
922 unsigned int time_inlining_benefit
,
923 unsigned int self_size
,
924 unsigned int size_inlining_benefit
)
926 node
->aux
= (void *) tag
;
927 node
->local
.inline_summary
.estimated_self_stack_size
= stack_size
;
928 node
->local
.inline_summary
.self_time
= self_time
;
929 node
->local
.inline_summary
.time_inlining_benefit
= time_inlining_benefit
;
930 node
->local
.inline_summary
.self_size
= self_size
;
931 node
->local
.inline_summary
.size_inlining_benefit
= size_inlining_benefit
;
932 node
->global
.time
= self_time
;
933 node
->global
.size
= self_size
;
934 node
->global
.estimated_stack_size
= stack_size
;
935 node
->global
.estimated_growth
= INT_MIN
;
936 node
->local
.lto_file_data
= file_data
;
938 node
->local
.local
= bp_unpack_value (bp
, 1);
939 node
->local
.externally_visible
= bp_unpack_value (bp
, 1);
940 node
->local
.finalized
= bp_unpack_value (bp
, 1);
941 node
->local
.inlinable
= bp_unpack_value (bp
, 1);
942 node
->local
.versionable
= bp_unpack_value (bp
, 1);
943 node
->local
.disregard_inline_limits
= bp_unpack_value (bp
, 1);
944 node
->local
.redefined_extern_inline
= bp_unpack_value (bp
, 1);
945 node
->local
.vtable_method
= bp_unpack_value (bp
, 1);
946 node
->needed
= bp_unpack_value (bp
, 1);
947 node
->address_taken
= bp_unpack_value (bp
, 1);
948 node
->abstract_and_needed
= bp_unpack_value (bp
, 1);
949 node
->reachable_from_other_partition
= bp_unpack_value (bp
, 1);
950 node
->lowered
= bp_unpack_value (bp
, 1);
951 node
->analyzed
= tag
== LTO_cgraph_analyzed_node
;
952 node
->in_other_partition
= bp_unpack_value (bp
, 1);
953 node
->alias
= bp_unpack_value (bp
, 1);
954 node
->finalized_by_frontend
= bp_unpack_value (bp
, 1);
955 node
->frequency
= (enum node_frequency
)bp_unpack_value (bp
, 2);
958 /* Output the part of the cgraph in SET. */
961 output_varpool (cgraph_node_set set
, varpool_node_set vset
)
963 struct lto_simple_output_block
*ob
= lto_create_simple_output_block (LTO_section_varpool
);
964 lto_varpool_encoder_t varpool_encoder
= ob
->decl_state
->varpool_node_encoder
;
965 int len
= lto_varpool_encoder_size (varpool_encoder
), i
;
967 lto_output_uleb128_stream (ob
->main_stream
, len
);
969 /* Write out the nodes. We must first output a node and then its clones,
970 otherwise at a time reading back the node there would be nothing to clone
972 for (i
= 0; i
< len
; i
++)
974 lto_output_varpool_node (ob
, lto_varpool_encoder_deref (varpool_encoder
, i
),
979 lto_destroy_simple_output_block (ob
);
982 /* Read a node from input_block IB. TAG is the node's tag just read.
983 Return the node read or overwriten. */
985 static struct cgraph_node
*
986 input_node (struct lto_file_decl_data
*file_data
,
987 struct lto_input_block
*ib
,
988 enum LTO_cgraph_tags tag
,
989 VEC(cgraph_node_ptr
, heap
) *nodes
)
992 struct cgraph_node
*node
;
996 int ref
= LCC_NOT_FOUND
, ref2
= LCC_NOT_FOUND
;
999 int time_inlining_benefit
= 0;
1000 int size_inlining_benefit
= 0;
1001 unsigned long same_body_count
= 0;
1004 clone_ref
= lto_input_sleb128 (ib
);
1006 decl_index
= lto_input_uleb128 (ib
);
1007 fn_decl
= lto_file_decl_data_get_fn_decl (file_data
, decl_index
);
1009 if (clone_ref
!= LCC_NOT_FOUND
)
1011 node
= cgraph_clone_node (VEC_index (cgraph_node_ptr
, nodes
, clone_ref
), fn_decl
,
1012 0, CGRAPH_FREQ_BASE
, 0, false, NULL
);
1015 node
= cgraph_node (fn_decl
);
1017 node
->count
= lto_input_sleb128 (ib
);
1019 if (tag
== LTO_cgraph_analyzed_node
)
1021 stack_size
= lto_input_sleb128 (ib
);
1022 self_size
= lto_input_sleb128 (ib
);
1023 size_inlining_benefit
= lto_input_sleb128 (ib
);
1024 self_time
= lto_input_sleb128 (ib
);
1025 time_inlining_benefit
= lto_input_sleb128 (ib
);
1027 ref
= lto_input_sleb128 (ib
);
1030 ref2
= lto_input_sleb128 (ib
);
1032 /* Make sure that we have not read this node before. Nodes that
1033 have already been read will have their tag stored in the 'aux'
1034 field. Since built-in functions can be referenced in multiple
1035 functions, they are expected to be read more than once. */
1036 if (node
->aux
&& !DECL_IS_BUILTIN (node
->decl
))
1037 internal_error ("bytecode stream: found multiple instances of cgraph "
1038 "node %d", node
->uid
);
1040 bp
= lto_input_bitpack (ib
);
1041 input_overwrite_node (file_data
, node
, tag
, &bp
, stack_size
, self_time
,
1042 time_inlining_benefit
, self_size
,
1043 size_inlining_benefit
);
1045 /* Store a reference for now, and fix up later to be a pointer. */
1046 node
->global
.inlined_to
= (cgraph_node_ptr
) (intptr_t) ref
;
1048 /* Store a reference for now, and fix up later to be a pointer. */
1049 node
->same_comdat_group
= (cgraph_node_ptr
) (intptr_t) ref2
;
1051 same_body_count
= lto_input_uleb128 (ib
);
1052 while (same_body_count
-- > 0)
1056 decl_index
= lto_input_uleb128 (ib
);
1057 alias_decl
= lto_file_decl_data_get_fn_decl (file_data
, decl_index
);
1058 type
= lto_input_uleb128 (ib
);
1062 decl_index
= lto_input_uleb128 (ib
);
1063 real_alias
= lto_file_decl_data_get_fn_decl (file_data
, decl_index
);
1064 cgraph_same_body_alias (alias_decl
, real_alias
);
1068 HOST_WIDE_INT fixed_offset
= lto_input_uleb128 (ib
);
1069 HOST_WIDE_INT virtual_value
= lto_input_uleb128 (ib
);
1071 decl_index
= lto_input_uleb128 (ib
);
1072 real_alias
= lto_file_decl_data_get_fn_decl (file_data
, decl_index
);
1073 cgraph_add_thunk (alias_decl
, fn_decl
, type
& 2, fixed_offset
,
1075 (type
& 4) ? size_int (virtual_value
) : NULL_TREE
,
1082 /* Read a node from input_block IB. TAG is the node's tag just read.
1083 Return the node read or overwriten. */
1085 static struct varpool_node
*
1086 input_varpool_node (struct lto_file_decl_data
*file_data
,
1087 struct lto_input_block
*ib
)
1091 struct varpool_node
*node
;
1092 struct bitpack_d bp
;
1095 int ref
= LCC_NOT_FOUND
;
1097 decl_index
= lto_input_uleb128 (ib
);
1098 var_decl
= lto_file_decl_data_get_var_decl (file_data
, decl_index
);
1099 node
= varpool_node (var_decl
);
1100 node
->lto_file_data
= file_data
;
1102 bp
= lto_input_bitpack (ib
);
1103 node
->externally_visible
= bp_unpack_value (&bp
, 1);
1104 node
->force_output
= bp_unpack_value (&bp
, 1);
1105 node
->finalized
= bp_unpack_value (&bp
, 1);
1106 node
->alias
= bp_unpack_value (&bp
, 1);
1107 node
->analyzed
= node
->finalized
;
1108 node
->used_from_other_partition
= bp_unpack_value (&bp
, 1);
1109 node
->in_other_partition
= bp_unpack_value (&bp
, 1);
1110 aliases_p
= bp_unpack_value (&bp
, 1);
1111 if (node
->finalized
)
1112 varpool_mark_needed_node (node
);
1113 ref
= lto_input_sleb128 (ib
);
1114 /* Store a reference for now, and fix up later to be a pointer. */
1115 node
->same_comdat_group
= (struct varpool_node
*) (intptr_t) ref
;
1118 count
= lto_input_uleb128 (ib
);
1119 for (; count
> 0; count
--)
1121 tree decl
= lto_file_decl_data_get_var_decl (file_data
,
1122 lto_input_uleb128 (ib
));
1123 varpool_extra_name_alias (decl
, var_decl
);
1129 /* Read a node from input_block IB. TAG is the node's tag just read.
1130 Return the node read or overwriten. */
1133 input_ref (struct lto_input_block
*ib
,
1134 struct cgraph_node
*refering_node
,
1135 struct varpool_node
*refering_varpool_node
,
1136 VEC(cgraph_node_ptr
, heap
) *nodes
,
1137 VEC(varpool_node_ptr
, heap
) *varpool_nodes
)
1139 struct cgraph_node
*node
= NULL
;
1140 struct varpool_node
*varpool_node
= NULL
;
1141 struct bitpack_d bp
;
1142 enum ipa_ref_type type
;
1143 enum ipa_ref_use use
;
1145 bp
= lto_input_bitpack (ib
);
1146 type
= (enum ipa_ref_type
) bp_unpack_value (&bp
, 1);
1147 use
= (enum ipa_ref_use
) bp_unpack_value (&bp
, 2);
1148 if (type
== IPA_REF_CGRAPH
)
1149 node
= VEC_index (cgraph_node_ptr
, nodes
, lto_input_sleb128 (ib
));
1151 varpool_node
= VEC_index (varpool_node_ptr
, varpool_nodes
, lto_input_sleb128 (ib
));
1152 ipa_record_reference (refering_node
, refering_varpool_node
,
1153 node
, varpool_node
, use
, NULL
);
1156 /* Read an edge from IB. NODES points to a vector of previously read nodes for
1157 decoding caller and callee of the edge to be read. If INDIRECT is true, the
1158 edge being read is indirect (in the sense that it has
1159 indirect_unknown_callee set). */
1162 input_edge (struct lto_input_block
*ib
, VEC(cgraph_node_ptr
, heap
) *nodes
,
1165 struct cgraph_node
*caller
, *callee
;
1166 struct cgraph_edge
*edge
;
1167 unsigned int stmt_id
;
1171 cgraph_inline_failed_t inline_failed
;
1172 struct bitpack_d bp
;
1175 caller
= VEC_index (cgraph_node_ptr
, nodes
, lto_input_sleb128 (ib
));
1176 if (caller
== NULL
|| caller
->decl
== NULL_TREE
)
1177 internal_error ("bytecode stream: no caller found while reading edge");
1181 callee
= VEC_index (cgraph_node_ptr
, nodes
, lto_input_sleb128 (ib
));
1182 if (callee
== NULL
|| callee
->decl
== NULL_TREE
)
1183 internal_error ("bytecode stream: no callee found while reading edge");
1188 count
= (gcov_type
) lto_input_sleb128 (ib
);
1190 bp
= lto_input_bitpack (ib
);
1191 stmt_id
= (unsigned int) bp_unpack_value (&bp
, HOST_BITS_PER_INT
);
1192 inline_failed
= (cgraph_inline_failed_t
) bp_unpack_value (&bp
,
1194 freq
= (int) bp_unpack_value (&bp
, HOST_BITS_PER_INT
);
1195 nest
= (unsigned) bp_unpack_value (&bp
, 30);
1198 edge
= cgraph_create_indirect_edge (caller
, NULL
, 0, count
, freq
, nest
);
1200 edge
= cgraph_create_edge (caller
, callee
, NULL
, count
, freq
, nest
);
1202 edge
->indirect_inlining_edge
= bp_unpack_value (&bp
, 1);
1203 edge
->lto_stmt_uid
= stmt_id
;
1204 edge
->inline_failed
= inline_failed
;
1205 edge
->call_stmt_cannot_inline_p
= bp_unpack_value (&bp
, 1);
1206 edge
->can_throw_external
= bp_unpack_value (&bp
, 1);
1209 if (bp_unpack_value (&bp
, 1))
1210 ecf_flags
|= ECF_CONST
;
1211 if (bp_unpack_value (&bp
, 1))
1212 ecf_flags
|= ECF_PURE
;
1213 if (bp_unpack_value (&bp
, 1))
1214 ecf_flags
|= ECF_NORETURN
;
1215 if (bp_unpack_value (&bp
, 1))
1216 ecf_flags
|= ECF_MALLOC
;
1217 if (bp_unpack_value (&bp
, 1))
1218 ecf_flags
|= ECF_NOTHROW
;
1219 if (bp_unpack_value (&bp
, 1))
1220 ecf_flags
|= ECF_RETURNS_TWICE
;
1221 edge
->indirect_info
->ecf_flags
= ecf_flags
;
1226 /* Read a cgraph from IB using the info in FILE_DATA. */
1228 static VEC(cgraph_node_ptr
, heap
) *
1229 input_cgraph_1 (struct lto_file_decl_data
*file_data
,
1230 struct lto_input_block
*ib
)
1232 enum LTO_cgraph_tags tag
;
1233 VEC(cgraph_node_ptr
, heap
) *nodes
= NULL
;
1234 struct cgraph_node
*node
;
1236 unsigned HOST_WIDE_INT len
;
1238 tag
= (enum LTO_cgraph_tags
) lto_input_uleb128 (ib
);
1241 if (tag
== LTO_cgraph_edge
)
1242 input_edge (ib
, nodes
, false);
1243 else if (tag
== LTO_cgraph_indirect_edge
)
1244 input_edge (ib
, nodes
, true);
1247 node
= input_node (file_data
, ib
, tag
,nodes
);
1248 if (node
== NULL
|| node
->decl
== NULL_TREE
)
1249 internal_error ("bytecode stream: found empty cgraph node");
1250 VEC_safe_push (cgraph_node_ptr
, heap
, nodes
, node
);
1251 lto_cgraph_encoder_encode (file_data
->cgraph_node_encoder
, node
);
1254 tag
= (enum LTO_cgraph_tags
) lto_input_uleb128 (ib
);
1257 /* Input toplevel asms. */
1258 len
= lto_input_uleb128 (ib
);
1261 char *str
= (char *)xmalloc (len
+ 1);
1262 for (i
= 0; i
< len
; ++i
)
1263 str
[i
] = lto_input_1_unsigned (ib
);
1264 cgraph_add_asm_node (build_string (len
, str
));
1267 len
= lto_input_uleb128 (ib
);
1270 for (i
= 0; VEC_iterate (cgraph_node_ptr
, nodes
, i
, node
); i
++)
1272 int ref
= (int) (intptr_t) node
->global
.inlined_to
;
1274 /* Fixup inlined_to from reference to pointer. */
1275 if (ref
!= LCC_NOT_FOUND
)
1276 node
->global
.inlined_to
= VEC_index (cgraph_node_ptr
, nodes
, ref
);
1278 node
->global
.inlined_to
= NULL
;
1280 ref
= (int) (intptr_t) node
->same_comdat_group
;
1282 /* Fixup same_comdat_group from reference to pointer. */
1283 if (ref
!= LCC_NOT_FOUND
)
1284 node
->same_comdat_group
= VEC_index (cgraph_node_ptr
, nodes
, ref
);
1286 node
->same_comdat_group
= NULL
;
1291 /* Read a varpool from IB using the info in FILE_DATA. */
1293 static VEC(varpool_node_ptr
, heap
) *
1294 input_varpool_1 (struct lto_file_decl_data
*file_data
,
1295 struct lto_input_block
*ib
)
1297 unsigned HOST_WIDE_INT len
;
1298 VEC(varpool_node_ptr
, heap
) *varpool
= NULL
;
1300 struct varpool_node
*node
;
1302 len
= lto_input_uleb128 (ib
);
1305 VEC_safe_push (varpool_node_ptr
, heap
, varpool
,
1306 input_varpool_node (file_data
, ib
));
1309 for (i
= 0; VEC_iterate (varpool_node_ptr
, varpool
, i
, node
); i
++)
1311 int ref
= (int) (intptr_t) node
->same_comdat_group
;
1313 /* Fixup same_comdat_group from reference to pointer. */
1314 if (ref
!= LCC_NOT_FOUND
)
1315 node
->same_comdat_group
= VEC_index (varpool_node_ptr
, varpool
, ref
);
1317 node
->same_comdat_group
= NULL
;
1322 /* Input ipa_refs. */
1325 input_refs (struct lto_input_block
*ib
,
1326 VEC(cgraph_node_ptr
, heap
) *nodes
,
1327 VEC(varpool_node_ptr
, heap
) *varpool
)
1333 struct cgraph_node
*node
;
1334 count
= lto_input_uleb128 (ib
);
1337 idx
= lto_input_uleb128 (ib
);
1338 node
= VEC_index (cgraph_node_ptr
, nodes
, idx
);
1341 input_ref (ib
, node
, NULL
, nodes
, varpool
);
1347 struct varpool_node
*node
;
1348 count
= lto_input_uleb128 (ib
);
1351 node
= VEC_index (varpool_node_ptr
, varpool
, lto_input_uleb128 (ib
));
1354 input_ref (ib
, NULL
, node
, nodes
, varpool
);
1361 static struct gcov_ctr_summary lto_gcov_summary
;
1363 /* Input profile_info from IB. */
1365 input_profile_summary (struct lto_input_block
*ib
)
1367 unsigned int runs
= lto_input_uleb128 (ib
);
1372 profile_info
= <o_gcov_summary
;
1373 lto_gcov_summary
.runs
= runs
;
1374 lto_gcov_summary
.sum_all
= lto_input_sleb128 (ib
);
1375 lto_gcov_summary
.run_max
= lto_input_sleb128 (ib
);
1376 lto_gcov_summary
.sum_max
= lto_input_sleb128 (ib
);
1378 /* We can support this by scaling all counts to nearest common multiple
1379 of all different runs, but it is perhaps not worth the effort. */
1380 else if (profile_info
->runs
!= runs
1381 || profile_info
->sum_all
!= lto_input_sleb128 (ib
)
1382 || profile_info
->run_max
!= lto_input_sleb128 (ib
)
1383 || profile_info
->sum_max
!= lto_input_sleb128 (ib
))
1384 sorry ("Combining units with different profiles is not supported.");
1385 /* We allow some units to have profile and other to not have one. This will
1386 just make unprofiled units to be size optimized that is sane. */
1391 /* Input and merge the cgraph from each of the .o files passed to
1397 struct lto_file_decl_data
**file_data_vec
= lto_get_file_decl_data ();
1398 struct lto_file_decl_data
*file_data
;
1400 struct cgraph_node
*node
;
1402 while ((file_data
= file_data_vec
[j
++]))
1406 struct lto_input_block
*ib
;
1407 VEC(cgraph_node_ptr
, heap
) *nodes
;
1408 VEC(varpool_node_ptr
, heap
) *varpool
;
1410 ib
= lto_create_simple_input_block (file_data
, LTO_section_cgraph
,
1412 input_profile_summary (ib
);
1413 file_data
->cgraph_node_encoder
= lto_cgraph_encoder_new ();
1414 nodes
= input_cgraph_1 (file_data
, ib
);
1415 lto_destroy_simple_input_block (file_data
, LTO_section_cgraph
,
1418 ib
= lto_create_simple_input_block (file_data
, LTO_section_varpool
,
1420 varpool
= input_varpool_1 (file_data
, ib
);
1421 lto_destroy_simple_input_block (file_data
, LTO_section_varpool
,
1424 ib
= lto_create_simple_input_block (file_data
, LTO_section_refs
,
1426 input_refs (ib
, nodes
, varpool
);
1427 lto_destroy_simple_input_block (file_data
, LTO_section_refs
,
1430 input_cgraph_opt_summary (nodes
);
1431 VEC_free (cgraph_node_ptr
, heap
, nodes
);
1432 VEC_free (varpool_node_ptr
, heap
, varpool
);
1435 /* Clear out the aux field that was used to store enough state to
1436 tell which nodes should be overwritten. */
1437 for (node
= cgraph_nodes
; node
; node
= node
->next
)
1439 /* Some nodes may have been created by cgraph_node. This
1440 happens when the callgraph contains nested functions. If the
1441 node for the parent function was never emitted to the gimple
1442 file, cgraph_node will create a node for it when setting the
1443 context of the nested function. */
1444 if (node
->local
.lto_file_data
)
1449 /* True when we need optimization summary for NODE. */
1452 output_cgraph_opt_summary_p (struct cgraph_node
*node
)
1454 if (!node
->clone_of
)
1456 return (node
->clone
.tree_map
1457 || node
->clone
.args_to_skip
1458 || node
->clone
.combined_args_to_skip
);
1461 /* Output optimization summary for NODE to OB. */
1464 output_node_opt_summary (struct output_block
*ob
,
1465 struct cgraph_node
*node
)
1469 struct ipa_replace_map
*map
;
1470 struct bitpack_d bp
;
1473 lto_output_uleb128_stream (ob
->main_stream
,
1474 bitmap_count_bits (node
->clone
.args_to_skip
));
1475 EXECUTE_IF_SET_IN_BITMAP (node
->clone
.args_to_skip
, 0, index
, bi
)
1476 lto_output_uleb128_stream (ob
->main_stream
, index
);
1477 lto_output_uleb128_stream (ob
->main_stream
,
1478 bitmap_count_bits (node
->clone
.combined_args_to_skip
));
1479 EXECUTE_IF_SET_IN_BITMAP (node
->clone
.combined_args_to_skip
, 0, index
, bi
)
1480 lto_output_uleb128_stream (ob
->main_stream
, index
);
1481 lto_output_uleb128_stream (ob
->main_stream
,
1482 VEC_length (ipa_replace_map_p
, node
->clone
.tree_map
));
1483 for (i
= 0; VEC_iterate (ipa_replace_map_p
, node
->clone
.tree_map
, i
, map
); i
++)
1488 for (parm_num
= 0, parm
= DECL_ARGUMENTS (node
->decl
); parm
;
1489 parm
= TREE_CHAIN (parm
), parm_num
++)
1490 if (map
->old_tree
== parm
)
1492 /* At the moment we assume all old trees to be PARM_DECLs, because we have no
1493 mechanism to store function local declarations into summaries. */
1495 lto_output_uleb128_stream (ob
->main_stream
, parm_num
);
1496 lto_output_tree (ob
, map
->new_tree
, true);
1497 bp
= bitpack_create (ob
->main_stream
);
1498 bp_pack_value (&bp
, map
->replace_p
, 1);
1499 bp_pack_value (&bp
, map
->ref_p
, 1);
1500 lto_output_bitpack (&bp
);
1504 /* Output optimization summaries stored in callgraph.
1505 At the moment it is the clone info structure. */
1508 output_cgraph_opt_summary (void)
1510 struct cgraph_node
*node
;
1512 lto_cgraph_encoder_t encoder
;
1513 struct output_block
*ob
= create_output_block (LTO_section_cgraph_opt_sum
);
1516 ob
->cgraph_node
= NULL
;
1517 encoder
= ob
->decl_state
->cgraph_node_encoder
;
1518 n_nodes
= lto_cgraph_encoder_size (encoder
);
1519 for (i
= 0; i
< n_nodes
; i
++)
1520 if (output_cgraph_opt_summary_p (lto_cgraph_encoder_deref (encoder
, i
)))
1522 lto_output_uleb128_stream (ob
->main_stream
, count
);
1523 for (i
= 0; i
< n_nodes
; i
++)
1525 node
= lto_cgraph_encoder_deref (encoder
, i
);
1526 if (output_cgraph_opt_summary_p (node
))
1528 lto_output_uleb128_stream (ob
->main_stream
, i
);
1529 output_node_opt_summary (ob
, node
);
1532 produce_asm (ob
, NULL
);
1533 destroy_output_block (ob
);
1536 /* Input optimiation summary of NODE. */
1539 input_node_opt_summary (struct cgraph_node
*node
,
1540 struct lto_input_block
*ib_main
,
1541 struct data_in
*data_in
)
1546 struct bitpack_d bp
;
1548 count
= lto_input_uleb128 (ib_main
);
1550 node
->clone
.args_to_skip
= BITMAP_GGC_ALLOC ();
1551 for (i
= 0; i
< count
; i
++)
1553 bit
= lto_input_uleb128 (ib_main
);
1554 bitmap_set_bit (node
->clone
.args_to_skip
, bit
);
1556 count
= lto_input_uleb128 (ib_main
);
1558 node
->clone
.combined_args_to_skip
= BITMAP_GGC_ALLOC ();
1559 for (i
= 0; i
< count
; i
++)
1561 bit
= lto_input_uleb128 (ib_main
);
1562 bitmap_set_bit (node
->clone
.combined_args_to_skip
, bit
);
1564 count
= lto_input_uleb128 (ib_main
);
1565 for (i
= 0; i
< count
; i
++)
1569 struct ipa_replace_map
*map
= ggc_alloc_ipa_replace_map ();
1571 VEC_safe_push (ipa_replace_map_p
, gc
, node
->clone
.tree_map
, map
);
1572 for (parm_num
= 0, parm
= DECL_ARGUMENTS (node
->decl
); parm_num
;
1573 parm
= TREE_CHAIN (parm
))
1575 map
->parm_num
= lto_input_uleb128 (ib_main
);
1576 map
->old_tree
= NULL
;
1577 map
->new_tree
= lto_input_tree (ib_main
, data_in
);
1578 bp
= lto_input_bitpack (ib_main
);
1579 map
->replace_p
= bp_unpack_value (&bp
, 1);
1580 map
->ref_p
= bp_unpack_value (&bp
, 1);
1584 /* Read section in file FILE_DATA of length LEN with data DATA. */
1587 input_cgraph_opt_section (struct lto_file_decl_data
*file_data
,
1588 const char *data
, size_t len
, VEC (cgraph_node_ptr
,
1591 const struct lto_function_header
*header
=
1592 (const struct lto_function_header
*) data
;
1593 const int32_t cfg_offset
= sizeof (struct lto_function_header
);
1594 const int32_t main_offset
= cfg_offset
+ header
->cfg_size
;
1595 const int32_t string_offset
= main_offset
+ header
->main_size
;
1596 struct data_in
*data_in
;
1597 struct lto_input_block ib_main
;
1601 LTO_INIT_INPUT_BLOCK (ib_main
, (const char *) data
+ main_offset
, 0,
1605 lto_data_in_create (file_data
, (const char *) data
+ string_offset
,
1606 header
->string_size
, NULL
);
1607 count
= lto_input_uleb128 (&ib_main
);
1609 for (i
= 0; i
< count
; i
++)
1611 int ref
= lto_input_uleb128 (&ib_main
);
1612 input_node_opt_summary (VEC_index (cgraph_node_ptr
, nodes
, ref
),
1615 lto_free_section_data (file_data
, LTO_section_jump_functions
, NULL
, data
,
1617 lto_data_in_delete (data_in
);
1620 /* Input optimization summary of cgraph. */
1623 input_cgraph_opt_summary (VEC (cgraph_node_ptr
, heap
) * nodes
)
1625 struct lto_file_decl_data
**file_data_vec
= lto_get_file_decl_data ();
1626 struct lto_file_decl_data
*file_data
;
1629 while ((file_data
= file_data_vec
[j
++]))
1633 lto_get_section_data (file_data
, LTO_section_cgraph_opt_sum
, NULL
,
1637 input_cgraph_opt_section (file_data
, data
, len
, nodes
);