1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
|
{
Copyright (c) 2008 by Jonas Maebe
Whole program optimisation information collection base class
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
unit wpobase;
{$i fpcdefs.inc}
interface
uses
globtype,
cclasses,
symtype;
type
{ the types of available whole program optimization }
twpotype = (wpo_devirtualization_context_insensitive,wpo_live_symbol_information);
const
wpo2str: array[twpotype] of string[16] = ('devirtualization','symbol liveness');
type
{ ************************************************************************* }
{ ******************** General base classes/interfaces ******************** }
{ ************************************************************************* }
{ interface to reading a section from a file with wpo info }
twposectionreaderintf = interface
['{51BE3F89-C9C5-4965-9C83-AE7490C92E3E}']
function sectiongetnextline(out s: string): boolean;
end;
{ interface to writing sections to a file with wpoinfo }
twposectionwriterintf = interface
['{C056F0DD-62B1-4612-86C7-2D39944C4437}']
procedure startsection(const name: string);
procedure sectionputline(const s: string);
end;
{ base class for wpo information stores }
{ twpocomponentbase }
twpocomponentbase = class
public
constructor create; reintroduce; virtual;
{ type of whole program optimization information collected/provided by
this class
}
class function getwpotype: twpotype; virtual; abstract;
{ whole program optimizations for which this class generates information }
class function generatesinfoforwposwitches: twpoptimizerswitches; virtual; abstract;
{ whole program optimizations performed by this class }
class function performswpoforswitches: twpoptimizerswitches; virtual; abstract;
{ returns the name of the section parsed by this class }
class function sectionname: shortstring; virtual; abstract;
{ checks whether the compiler options are compatible with this
optimization (default: don't check anything)
}
class procedure checkoptions; virtual;
{ loads the information pertinent to this whole program optimization from
the current section being processed by reader
}
procedure loadfromwpofilesection(reader: twposectionreaderintf); virtual; abstract;
{ stores the information of this component to a file in a format that can
be loaded again using loadfromwpofilesection()
}
procedure storewpofilesection(writer: twposectionwriterintf); virtual; abstract;
{ extracts the information pertinent to this whole program optimization
from the current compiler state (loaded units, ...)
}
procedure constructfromcompilerstate; virtual; abstract;
end;
twpocomponentbaseclass = class of twpocomponentbase;
{ forward declaration of overall wpo info manager class }
twpoinfomanagerbase = class;
{ ************************************************************************* }
{ ** Information created per unit for use during subsequent compilation *** }
{ ************************************************************************* }
{ information about called vmt entries for a class }
tcalledvmtentries = class
protected
{ the class }
fobjdef: tdef;
fobjdefderef: tderef;
{ the vmt entries }
fcalledentries: tbitset;
public
constructor create(_objdef: tdef; nentries: longint);
constructor ppuload(ppufile: tcompilerppufile);
destructor destroy; override;
procedure ppuwrite(ppufile: tcompilerppufile);
procedure buildderef;
procedure buildderefimpl;
procedure deref;
procedure derefimpl;
property objdef: tdef read fobjdef write fobjdef;
property objdefderef: tderef read fobjdefderef write fobjdefderef;
property calledentries: tbitset read fcalledentries write fcalledentries;
end;
{ base class of information collected per unit. Still needs to be
generalised for different kinds of wpo information, currently specific
to devirtualization.
}
tunitwpoinfobase = class
protected
{ created object types }
fcreatedobjtypes: tfpobjectlist;
{ objectdefs pointed to by created classrefdefs }
fcreatedclassrefobjtypes: tfpobjectlist;
{ objtypes potentially instantiated by fcreatedclassrefobjtypes
(objdectdefs pointed to by classrefdefs that are
passed as a regular parameter, loaded in a variable, ...
so they can end up in a classrefdef var and be instantiated)
}
fmaybecreatedbyclassrefdeftypes: tfpobjectlist;
{ called virtual methods for all classes (hashed by mangled classname,
entries bitmaps indicating which vmt entries per class are called --
tcalledvmtentries)
}
fcalledvmtentries: tfphashlist;
public
constructor create; reintroduce; virtual;
destructor destroy; override;
property createdobjtypes: tfpobjectlist read fcreatedobjtypes;
property createdclassrefobjtypes: tfpobjectlist read fcreatedclassrefobjtypes;
property maybecreatedbyclassrefdeftypes: tfpobjectlist read fmaybecreatedbyclassrefdeftypes;
property calledvmtentries: tfphashlist read fcalledvmtentries;
procedure addcreatedobjtype(def: tdef);
procedure addcreatedobjtypeforclassref(def: tdef);
procedure addmaybecreatedbyclassref(def: tdef);
procedure addcalledvmtentry(def: tdef; index: longint);
{ resets the "I've been registered with wpo" flags for all defs in the
above lists }
procedure resetdefs;
end;
{ ************************************************************************* }
{ **** Total information created for use during subsequent compilation **** }
{ ************************************************************************* }
{ class to create a file with wpo information }
{ tavailablewpofilewriter }
twpofilewriter = class(tobject,twposectionwriterintf)
private
{ array of class *instances* that wish to be written out to the
whole program optimization feedback file
}
fsectioncontents: tfpobjectlist;
ffilename: tcmdstr;
foutputfile: text;
public
constructor create(const fn: tcmdstr);
destructor destroy; override;
procedure writefile;
{ starts a new section with name "name" }
procedure startsection(const name: string);
{ writes s to the wpo file }
procedure sectionputline(const s: string);
{ register a component instance that needs to be written
to the wpo feedback file
}
procedure registerwpocomponent(component: twpocomponentbase);
end;
{ ************************************************************************* }
{ ************ Information for use during current compilation ************* }
{ ************************************************************************* }
{ class to read a file with wpo information }
twpofilereader = class(tobject,twposectionreaderintf)
private
ffilename: tcmdstr;
flinenr: longint;
finputfile: text;
fcurline: string;
fusecurline: boolean;
{ destination for the read information }
fdest: twpoinfomanagerbase;
function getnextnoncommentline(out s: string): boolean;
public
constructor create(const fn: tcmdstr; dest: twpoinfomanagerbase);
destructor destroy; override;
{ processes the wpo info in the file }
procedure processfile;
{ returns next line of the current section in s, and false if no more
lines in the current section
}
function sectiongetnextline(out s: string): boolean;
end;
{ ************************************************************************* }
{ ******* Specific kinds of whole program optimization components ********* }
{ ************************************************************************* }
{ method devirtualisation }
twpodevirtualisationhandler = class(twpocomponentbase)
{ checks whether procdef (a procdef for a virtual method) can be replaced with
a static call when it's called as objdef.procdef, and if so returns the
mangled name in staticname.
}
function staticnameforcallingvirtualmethod(objdef, procdef: tdef; out staticname: TSymStr): boolean; virtual; abstract;
{ checks whether procdef (a procdef for a virtual method) can be replaced with
a different procname in the vmt of objdef, and if so returns the new
mangledname in staticname
}
function staticnameforvmtentry(objdef, procdef: tdef; out staticname: TSymStr): boolean; virtual; abstract;
end;
twpodeadcodehandler = class(twpocomponentbase)
{ checks whether a mangledname was removed as dead code from the final
binary (WARNING: must *not* be called for functions marked as inline,
since if all call sites are inlined, it won't appear in the final
binary but nevertheless is still necessary!)
}
function symbolinfinalbinary(const s: shortstring): boolean; virtual; abstract;
end;
{ ************************************************************************* }
{ ************ Collection of all instances of wpo components ************** }
{ ************************************************************************* }
{ class doing all the bookkeeping for everything }
twpoinfomanagerbase = class
private
{ array of classrefs of handler classes for the various kinds of whole
program optimizations that we support
}
fwpocomponents: tfphashlist;
freader: twpofilereader;
fwriter: twpofilewriter;
public
{ instances of the various optimizers/information collectors (for
information used during this compilation)
}
wpoinfouse: array[twpotype] of twpocomponentbase;
{ register a whole program optimization class type }
procedure registerwpocomponentclass(wpocomponent: twpocomponentbaseclass);
{ get the program optimization class type that can parse the contents
of the section with name "secname" in the wpo feedback file
}
function gethandlerforsection(const secname: string): twpocomponentbaseclass;
{ tell all instantiated wpo component classes to collect the information
from the global compiler state that they need (done at the very end of
the compilation process)
}
procedure extractwpoinfofromprogram;
{ set the name of the feedback file from which all whole-program information
to be used during the current compilation will be read
}
procedure setwpoinputfile(const fn: tcmdstr);
{ set the name of the feedback file to which all whole-program information
collected during the current compilation will be written
}
procedure setwpooutputfile(const fn: tcmdstr);
{ check whether the specified wpo options (-FW/-Fw/-OW/-Ow) are complete
and sensical, and parse the wpo feedback file specified with
setwpoinputfile
}
procedure parseandcheckwpoinfo;
{ routines accessing the optimizer information }
{ 1) devirtualization at the symbol name level }
function can_be_devirtualized(objdef, procdef: tdef; out name: TSymStr): boolean; virtual; abstract;
{ 2) optimal replacement method name in vmt }
function optimized_name_for_vmt(objdef, procdef: tdef; out name: TSymStr): boolean; virtual; abstract;
{ 3) does a symbol appear in the final binary (i.e., not removed by dead code stripping/smart linking).
WARNING: do *not* call for inline functions/procedures/methods/...
}
function symbol_live(const name: shortstring): boolean; virtual; abstract;
constructor create; reintroduce;
destructor destroy; override;
end;
var
wpoinfomanager: twpoinfomanagerbase;
implementation
uses
globals,
cutils,
sysutils,
symdef,
verbose;
{ tcreatedwpoinfobase }
constructor tunitwpoinfobase.create;
begin
fcreatedobjtypes:=tfpobjectlist.create(false);
fcreatedclassrefobjtypes:=tfpobjectlist.create(false);
fmaybecreatedbyclassrefdeftypes:=tfpobjectlist.create(false);
fcalledvmtentries:=tfphashlist.create;
end;
destructor tunitwpoinfobase.destroy;
var
i: longint;
begin
{ don't call resetdefs here, because the defs may have been freed
already }
fcreatedobjtypes.free;
fcreatedobjtypes:=nil;
fcreatedclassrefobjtypes.free;
fcreatedclassrefobjtypes:=nil;
fmaybecreatedbyclassrefdeftypes.free;
fmaybecreatedbyclassrefdeftypes:=nil;
{ may not be assigned in case the info was loaded from a ppu and we
are not generating a wpo feedback file (see tunitwpoinfo.ppuload)
}
if assigned(fcalledvmtentries) then
begin
for i:=0 to fcalledvmtentries.count-1 do
tcalledvmtentries(fcalledvmtentries[i]).free;
fcalledvmtentries.free;
fcalledvmtentries:=nil;
end;
inherited destroy;
end;
procedure tunitwpoinfobase.resetdefs;
var
i: ptrint;
begin
if assigned(fcreatedobjtypes) then
for i:=0 to fcreatedobjtypes.count-1 do
tobjectdef(fcreatedobjtypes[i]).created_in_current_module:=false;
if assigned(fcreatedclassrefobjtypes) then
for i:=0 to fcreatedclassrefobjtypes.count-1 do
tobjectdef(fcreatedclassrefobjtypes[i]).classref_created_in_current_module:=false;
if assigned(fmaybecreatedbyclassrefdeftypes) then
for i:=0 to fmaybecreatedbyclassrefdeftypes.count-1 do
tobjectdef(fmaybecreatedbyclassrefdeftypes[i]).maybe_created_in_current_module:=false;
end;
procedure tunitwpoinfobase.addcreatedobjtype(def: tdef);
begin
fcreatedobjtypes.add(def);
end;
procedure tunitwpoinfobase.addcreatedobjtypeforclassref(def: tdef);
begin
fcreatedclassrefobjtypes.add(def);
end;
procedure tunitwpoinfobase.addmaybecreatedbyclassref(def: tdef);
begin
fmaybecreatedbyclassrefdeftypes.add(def);
end;
procedure tunitwpoinfobase.addcalledvmtentry(def: tdef; index: longint);
var
entries: tcalledvmtentries;
key: shortstring;
begin
key:=tobjectdef(def).vmt_mangledname;
entries:=tcalledvmtentries(fcalledvmtentries.find(key));
if not assigned(entries) then
begin
entries:=tcalledvmtentries.create(def,tobjectdef(def).vmtentries.count);
fcalledvmtentries.add(key,entries);
end;
entries.calledentries.include(index);
end;
{ twpofilereader }
function twpofilereader.getnextnoncommentline(out s: string):
boolean;
begin
if (fusecurline) then
begin
s:=fcurline;
fusecurline:=false;
result:=true;
exit;
end;
repeat
readln(finputfile,s);
if (s='') and
eof(finputfile) then
begin
result:=false;
exit;
end;
inc(flinenr);
until (s='') or
(s[1]<>'#');
result:=true;
end;
constructor twpofilereader.create(const fn: tcmdstr; dest: twpoinfomanagerbase);
begin
if not FileExists(fn) or
{ FileExists also returns true for directories }
DirectoryExists(fn) then
begin
cgmessage1(wpo_cant_find_file,fn);
exit;
end;
assign(finputfile,fn);
ffilename:=fn;
fdest:=dest;
end;
destructor twpofilereader.destroy;
begin
inherited destroy;
end;
procedure twpofilereader.processfile;
var
sectionhandler: twpocomponentbaseclass;
i: longint;
wpotype: twpotype;
s,
sectionname: string;
begin
cgmessage1(wpo_begin_processing,ffilename);
reset(finputfile);
flinenr:=0;
while getnextnoncommentline(s) do
begin
if (s='') then
continue;
{ format: "% sectionname" }
if (s[1]<>'%') then
begin
cgmessage2(wpo_expected_section,tostr(flinenr),s);
break;
end;
i:=2;
for i:=2 to length(s) do
if (s[i]<>' ') then
break;
sectionname:=copy(s,i,255);
{ find handler for section and process }
sectionhandler:=fdest.gethandlerforsection(sectionname);
if assigned(sectionhandler) then
begin
wpotype:=sectionhandler.getwpotype;
cgmessage2(wpo_found_section,sectionname,wpo2str[wpotype]);
{ do we need this information? }
if ((sectionhandler.performswpoforswitches * init_settings.dowpoptimizerswitches) <> []) then
begin
{ did some other section already generate this type of information? }
if assigned(fdest.wpoinfouse[wpotype]) then
begin
cgmessage2(wpo_duplicate_wpotype,wpo2str[wpotype],sectionname);
fdest.wpoinfouse[wpotype].free;
end;
{ process the section }
fdest.wpoinfouse[wpotype]:=sectionhandler.create;
twpocomponentbase(fdest.wpoinfouse[wpotype]).loadfromwpofilesection(self);
end
else
begin
cgmessage1(wpo_skipping_unnecessary_section,sectionname);
{ skip the current section }
while sectiongetnextline(s) do
;
end;
end
else
begin
cgmessage1(wpo_no_section_handler,sectionname);
{ skip the current section }
while sectiongetnextline(s) do
;
end;
end;
close(finputfile);
cgmessage1(wpo_end_processing,ffilename);
end;
function twpofilereader.sectiongetnextline(out s: string): boolean;
begin
result:=getnextnoncommentline(s);
if not result then
exit;
{ start of new section? }
if (s<>'') and
(s[1]='%') then
begin
{ keep read line for next call to getnextnoncommentline() }
fcurline:=s;
fusecurline:=true;
result:=false;
end;
end;
{ twpocomponentbase }
constructor twpocomponentbase.create;
begin
{ do nothing }
end;
class procedure twpocomponentbase.checkoptions;
begin
{ do nothing }
end;
{ twpofilewriter }
constructor twpofilewriter.create(const fn: tcmdstr);
begin
assign(foutputfile,fn);
ffilename:=fn;
fsectioncontents:=tfpobjectlist.create(true);
end;
destructor twpofilewriter.destroy;
begin
fsectioncontents.free;
inherited destroy;
end;
procedure twpofilewriter.writefile;
var
i: longint;
begin
{$push}{$i-}
rewrite(foutputfile);
{$pop}
if (ioresult <> 0) then
begin
cgmessage1(wpo_cant_create_feedback_file,ffilename);
exit;
end;
for i:=0 to fsectioncontents.count-1 do
twpocomponentbase(fsectioncontents[i]).storewpofilesection(self);
close(foutputfile);
end;
procedure twpofilewriter.startsection(const name: string);
begin
writeln(foutputfile,'% ',name);
end;
procedure twpofilewriter.sectionputline(const s: string);
begin
writeln(foutputfile,s);
end;
procedure twpofilewriter.registerwpocomponent(
component: twpocomponentbase);
begin
fsectioncontents.add(component);
end;
{ twpoinfomanagerbase }
procedure twpoinfomanagerbase.registerwpocomponentclass(wpocomponent: twpocomponentbaseclass);
begin
fwpocomponents.add(wpocomponent.sectionname,wpocomponent);
end;
function twpoinfomanagerbase.gethandlerforsection(const secname: string
): twpocomponentbaseclass;
begin
result:=twpocomponentbaseclass(fwpocomponents.find(secname));
end;
procedure twpoinfomanagerbase.setwpoinputfile(const fn: tcmdstr);
begin
freader:=twpofilereader.create(fn,self);
end;
procedure twpoinfomanagerbase.setwpooutputfile(const fn: tcmdstr);
begin
fwriter:=twpofilewriter.create(fn);
end;
procedure twpoinfomanagerbase.parseandcheckwpoinfo;
var
i: longint;
begin
{ error if we don't have to optimize yet have an input feedback file }
if (init_settings.dowpoptimizerswitches=[]) and
assigned(freader) then
begin
cgmessage(wpo_input_without_info_use);
exit;
end;
{ error if we have to optimize yet don't have an input feedback file }
if (init_settings.dowpoptimizerswitches<>[]) and
not assigned(freader) then
begin
cgmessage(wpo_no_input_specified);
exit;
end;
{ if we have to generate wpo information, check that a file has been
specified and that we have something to write to it
}
if (init_settings.genwpoptimizerswitches<>[]) and
not assigned(fwriter) then
begin
cgmessage(wpo_no_output_specified);
exit;
end;
if (init_settings.genwpoptimizerswitches=[]) and
assigned(fwriter) then
begin
cgmessage(wpo_output_without_info_gen);
exit;
end;
{ now read the input feedback file }
if assigned(freader) then
begin
freader.processfile;
freader.free;
freader:=nil;
end;
{ and for each specified optimization check whether the input feedback
file contained the necessary information
}
if (([cs_wpo_devirtualize_calls,cs_wpo_optimize_vmts] * init_settings.dowpoptimizerswitches) <> []) and
not assigned(wpoinfouse[wpo_devirtualization_context_insensitive]) then
begin
cgmessage1(wpo_not_enough_info,wpo2str[wpo_devirtualization_context_insensitive]);
exit;
end;
if (cs_wpo_symbol_liveness in init_settings.dowpoptimizerswitches) and
not assigned(wpoinfouse[wpo_live_symbol_information]) then
begin
cgmessage1(wpo_not_enough_info,wpo2str[wpo_live_symbol_information]);
exit;
end;
{ perform pre-checking to ensure there are no known incompatibilities between
the selected optimizations and other switches
}
for i:=0 to fwpocomponents.count-1 do
if (twpocomponentbaseclass(fwpocomponents[i]).generatesinfoforwposwitches*init_settings.genwpoptimizerswitches)<>[] then
twpocomponentbaseclass(fwpocomponents[i]).checkoptions
end;
procedure twpoinfomanagerbase.extractwpoinfofromprogram;
var
i: longint;
info: twpocomponentbase;
begin
{ if don't have to write anything, fwriter has not been created }
if not assigned(fwriter) then
exit;
{ let all wpo components gather the necessary info from the compiler state }
for i:=0 to fwpocomponents.count-1 do
if (twpocomponentbaseclass(fwpocomponents[i]).generatesinfoforwposwitches*current_settings.genwpoptimizerswitches)<>[] then
begin
info:=twpocomponentbaseclass(fwpocomponents[i]).create;
info.constructfromcompilerstate;
fwriter.registerwpocomponent(info);
end;
{ and write their info to disk }
fwriter.writefile;
fwriter.free;
fwriter:=nil;
end;
constructor twpoinfomanagerbase.create;
begin
inherited create;
fwpocomponents:=tfphashlist.create;
end;
destructor twpoinfomanagerbase.destroy;
var
i: twpotype;
begin
freader.free;
freader:=nil;
fwriter.free;
fwriter:=nil;
fwpocomponents.free;
fwpocomponents:=nil;
for i:=low(wpoinfouse) to high(wpoinfouse) do
if assigned(wpoinfouse[i]) then
wpoinfouse[i].free;
inherited destroy;
end;
{ tcalledvmtentries }
constructor tcalledvmtentries.create(_objdef: tdef; nentries: longint);
begin
objdef:=_objdef;
calledentries:=tbitset.create(nentries);
end;
constructor tcalledvmtentries.ppuload(ppufile: tcompilerppufile);
var
len: longint;
begin
ppufile.getderef(fobjdefderef);
len:=ppufile.getlongint;
calledentries:=tbitset.create_bytesize(len);
if (len <> calledentries.datasize) then
internalerror(2009060301);
ppufile.readdata(calledentries.data^,len);
end;
destructor tcalledvmtentries.destroy;
begin
fcalledentries.free;
inherited destroy;
end;
procedure tcalledvmtentries.ppuwrite(ppufile: tcompilerppufile);
begin
ppufile.putderef(objdefderef);
ppufile.putlongint(calledentries.datasize);
ppufile.putdata(calledentries.data^,calledentries.datasize);
end;
procedure tcalledvmtentries.buildderef;
begin
objdefderef.build(objdef);
end;
procedure tcalledvmtentries.buildderefimpl;
begin
end;
procedure tcalledvmtentries.deref;
begin
objdef:=tdef(objdefderef.resolve);
end;
procedure tcalledvmtentries.derefimpl;
begin
end;
end.
|