forked from verilator/verilator
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathChanges
3676 lines (1819 loc) · 110 KB
/
Changes
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
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
Revision history for Verilator
The contributors that suggested a given feature are shown in []. Thanks!
* Verilator 4.037 devel
**** Add new UNSUPPORTED error code to replace most previous Unsupported: messages.
**** With --bbox-unsup continue parsing on many (not all) UVM constructs.
* Verilator 4.036 2020-06-06
** OPT_FAST is now -Os by default. See the BENCHMARKING & OPTIMIZATION part
of the manual if you experience issues with compilation speed.
*** Configure now enables SystemC if it is installed as a system headers,
e.g. with 'apt-get install systemc-dev'.
*** Add --waiver-output flag that writes a verilator config file (.vlt) with
waivers to the warnings emitted during a Verilator run.
*** Support verilator_coverage --write-info for lcov HTML reports.
Line Coverage now tracks all statement lines, not just branch lines.
*** --output-split is now on by default. VM_PARALLEL_BUILDS is set by
default iff the --output-split caused an actual file split to occur.
--output-split-cfuncs and --output-split-ctrace now default to the
value of --output-split. These changes should improve build times of
medium and large designs with default options. User makefiles may
require changes.
*** The run-time library is now compiled with -Os by default. (#2369, #2373)
**** Support multi channel descriptor I/O (#2190) [Stephen Henry]
**** Support $countbits. (#2287) [Yossi Nivin]
**** Support $isunbounded and parameter $. (#2104)
**** Support unpacked array .sum and .product.
**** Support prefix/postfix increment/decrement. (#2223) [Maciej Sobkowski]
**** Fix FST tracing of little bit endian signals. [Geza Lore]
**** Fix +: and -: on unpacked arrays. (#2304) [engr248]
**** Fix $isunknown with constant Z's.
**** Fix queues and dynamic array wide ops. (#2352) [Vassilis Papaefstathiou]
* Verilator 4.034 2020-05-03
** Add simplistic class support with many restrictions, see manual. (#377)
** Support IEEE time units and time precisions. (#234)
Includes `timescale, $printtimescale, $timeformat.
VL_TIME_MULTIPLIER, VL_TIME_PRECISION, VL_TIME_UNIT have been removed
and the time precision must now match the SystemC time precision. To
get closer behavior to older versions, use e.g. --timescale-override
"1ps/1ps".
** Add --build to call make automatically. (#2249) [Yutetsu TAKATSUKASA]
** Configuring with ccache present now defaults to using it; see OBJCACHE.
** Fix DPI import/export to be standard compliant. (#2236) [Geza Lore]
** Add --trace-threads for general multithreaded tracing. (#2269) [Geza Lore]
*** Add --flatten for use with --xml-only. (#2270) [James Hanlon]
**** Greatly improve FST/VCD dump performance (#2244) (#2246) (#2250) (#2257) [Geza Lore]
**** Support $ferror, and $fflush without arguments. (#1638)
**** Support event data type (with some restrictions).
**** Support $root. (#2150) [Keyi Zhang]
**** Add error if use SystemC 2.2 and earlier (pre-2011) as is deprecated.
**** Fix build of fast path tracing code to use OPT_FAST. (#2245) [Geza Lore]
**** Fix arrayed instances connecting to slices. (#2263) [Don/engr248]
**** Fix error on unpacked connecting to packed. (#2288) [Joseph Shaker]
**** Fix logical not optimization with empty begin. (#2291) [Baltazar Ortiz]
**** Fix reduction OR on wide data, broke in v4.026. (#2300) [Jack Koenig]
**** Fix clock enables with bit-extends. (#2299) [Marco Widmer]
**** Fix MacOs Homebrew by removing default LIBS. (#2298) [Ryan Clarke]
* Verilator 4.032 2020-04-04
*** Add column numbers to errors and warnings.
*** Add GCC 9-style line number prefix when showing source text for errors.
*** Add setting VM_PARALLEL_BUILDS=1 when using --output-split. (#2185)
*** Change --quiet-exit to also suppress 'Exiting due to N errors'.
**** Suppress REALCVT for whole real numbers.
**** Support split_var in vlt files. (#2219) [Marco Widmer]
**** Fix parameter type redeclaring a type. (#2195) [hdzhangdoc]
**** Fix VCD open with empty filename. (#2198) [Julius Baxter]
**** Fix packages as enum base types. (#2202) [Driss Hafdi]
**** Fix duplicate typedefs in generate for. (#2205) [hdzhangdoc]
**** Fix MinW portability. (#2114) [Sean Cross]
**** Fix assertions with unique case inside. (#2199) [hdzhangdoc]
**** Fix implicit conversion of floats to wide integers.
* Verilator 4.030 2020-03-08
** Add split_var metacomment to assist UNOPTFLAT fixes. (#2066) [Yutetsu TAKATSUKASA]
** Add support for $dumpfile and $dumpvars. (#2126) [Alexander Grobman]
** Add support for dynamic arrays. (#379)
*** Add +verilator+noassert flag to disable assertion checking. [Tobias Wölfel]
*** Add check for assertOn for asserts. (#2162) [Tobias Wölfel]
*** Add --structs-packed for forward compatibility.
*** Fix genblk naming with directly nested generate blocks. (#2176) [Alexander Grobman]
**** Implement $displayb/o/h, $writeb/o/h, etc. (#1637)
**** Use gcc -Os in examples instead of -O2 for better average performance.
**** Fix undeclared VL_SHIFTR_WWQ. (#2114) [Alex Solomatnikov]
* Verilator 4.028 2020-02-08
** Support attributes (public, isolate_assignments, etc.) in configuration files.
** Add -match to lint_off to waive warnings. [Philipp Wagner]
*** Link Verilator binary partially statically. (#2146) [Geza Lore]
*** Verilation speed improvements (#2133) (#2138) [Geza Lore]
*** Support libgoogle-perftools-dev's libtcmalloc if available. (#2137) [Geza Lore]
*** Support $readmem/$writemem with assoc arrarys. (#2100) [agrobman]
**** Support type(expression) operator and $typename. (#1650)
**** Support left justified $display. (#2101) [Pieter Kapsenberg]
**** Support string character access via indexing.
**** Support enum.next(k) with constant k > 1. (#2125) [Tobias Rosenkranz]
**** Support parameter access from arrays of interfaces. (#2155) [Todd Strader]
**** Add parameter values in XML. #2110. [Pieter Kapsenberg]
**** Add loc column location in XML (replaces fl). (#2122) [Pieter Kapsenberg]
**** Add error on misused define. [Topa Tota]
**** Add parameter to set maximum signal width. (#2082) [Øyvind Harboe]
**** Add warning on genvar in normal for loop. (#2143) [yurivict]
**** Fix VPI scope naming for public modules. [Nandu Raj]
**** Fix FST tracing of enums inside structs. [fsiegle]
**** Fix WIDTH warning on </<= of narrower value. (#2141) [agrobman]
**** Fix OpenSolaris issues. (#2154) [brancoliticus]
**** Fix gated clocks under --protect-lib. (#2169) [Todd Strader]
* Verilator 4.026 2020-01-11
** Docker images are now available for Verilator releases.
*** Support bounded queues.
*** Support implication operator "|->" in assertions. (#2069) [Peter Monsson]
*** Support string compare, ato*, etc methods. (#1606) [Yutetsu TAKATSUKASA]
**** Support immediate cover statements.
**** Ignore `uselib to end-of-line. (#1634) [Frederic Antonin]
**** Update FST trace API for better performance.
**** Add vpiTimeUnit and allow to specify time as string. (#1636) [Stefan Wallentowitz]
**** Add error when `resetall inside module (IEEE 2017-22.3).
**** Add cleaner error on version control conflicts in sources.
**** Fix little endian cell ranges. (#1631) [Julien Margetts]
**** Fix queue issues (#1641) (#1643) [Peter Monsson, Stefan Wallentowitz]
**** Fix strcasecmp for windows. (#1651) [Kuba Ober]
**** Fix disable iff in assertions. Closes #1404. [Peter Monsson]
**** Fix huge case statement performance. Closes #1644. [Julien Margetts]
**** Fix tracing -1 index arrays. Closes #2090. [Yutetsu Takatsukasa]
**** Fix expand optimization slowing --lint-only. Closes #2091. [Thomas Watts]
**** Fix %{number}s with strings. #2093. [agrobman]
**** Fix shebang breaking some shells. Closes #2067. [zdave]
* Verilator 4.024 2019-12-08
** Support associative arrays (excluding [*] and pattern assignments). (#544)
** Support queues (excluding {} notation and pattern assignments). (#545)
*** Add +verilator+error+limit to see more assertion errors. [Peter Monsson]
*** Support string.toupper and string.tolower.
*** Support $rewind and $ungetc.
*** Support shortreal as real, with a SHORTREAL warning.
**** Add -Wpedantic and -Wno-context for compliance testing.
**** Add error on redefining preprocessor directives. [Piotr Binkowski]
**** Support $value$plusargs float and shorts. (#1592) (#1619) [Garrett Smith]
**** Fix gate lvalue optimization error. (#831) [Jonathon Donaldson, Driss Hafdi]
**** Fix color assertion on empty if. (#1604) [Andrew Holme]
**** Fix for loop missing initializer. (#1605) [Andrew Holme]
**** Fix hang on concat error. (#1608) [Bogdan Vukobratovic]
**** Fix VPI timed callbacks to be one-shot, pull5. [Matthew Ballance]
**** Fix // in filenames. (#1610) [Peter Nelson]
**** Fix $display("%p") to be closer to IEEE.
**** Fix labels on functions with returns. (#1614) [Mitch Hayenga]
**** Fix false unused message on __Vemumtab. (#2061) [Tobias Rosenkranz]
**** Fix assertion on dotted parameter arrayed function. (#1620) [Rich Porter]
**** Fix interface reference tracing. (#1595) [Todd Strader]
**** Fix error on unpacked concatenations. (#1627) [Driss Hafdi]
* Verilator 4.022 2019-11-10
** Add --protect-lib. (#1490) [Todd Strader]
** Add cmake support. (#1363) [Patrick Stewart]
*** Examples have been renamed.
*** Add --protect-ids to obscure information in objects. (#1521) [Todd Strader]
*** Add --trace-coverage.
*** Add --xml-output.
*** Support multithreading on Windows. [Patrick Stewart]
*** Suppress 'command failed' on normal errors.
*** Support some unpacked arrays in parameters. (#1315) [Marshal Qiao]
*** Add interface port visibility in traces. (#1594) [Todd Strader]
**** Increase case duplicate/incomplete to 16 bit tables. (#1545) [Yossi Nivin]
**** Support quoted arguments in -f files. (#1535) [Yves Mathieu]
**** Optimize modulus by power-of-two constants, and masked conditionals.
**** Fix detecting missing reg types. (#1570) [Jacko Dirks]
**** Fix multithreaded yield behavior when no work. [Patrick Stewart]
**** Fix bad-syntax crashes. (#1548, #1550-#1553, #1557-#1560, #1563,
#1573-#1577, #1579, #1582-#1591) [Eric Rippey]
**** Fix false CMPCONST/UNSIGNED warnings on "inside". (#1581) [Mitch Hayenga]
* Verilator 4.020 2019-10-06
*** Add --public-flat-rw. (#1511) [Stefan Wallentowitz]
*** Support $fseek, $ftell, $frewind. (#1496) [Howard Su]
*** Support vpiModule. (#1469) [Stefan Wallentowitz]
**** Make Syms file honor --output-split-cfuncs. (#1499) [Todd Strader]
**** Fix make test with no VERILATOR_ROOT. (#1494) [Ahmed El-Mahmoudy]
**** Fix error on multidimensional cells. (#1505) [Anderson Ignacio Da Silva]
**** Fix config_rev revision detection on old versions.
**** Fix false warning on backward indexing. (#1507) [Hao Shi]
**** Fix vpiType accessor. (#1509) (#1510) [Stefan Wallentowitz]
**** Fix ugly error on interface misuse. (#1525) [Bogdan Vukobratovic]
**** Fix misc bad-syntax crashes. (#1529) (#1530) (#1531) (#1532) (#1533) [Eric Rippey]
**** Fix case statements with strings. (#1536) [Philipp Wagner]
**** Fix some coverage lost when multithreaded. (#2151)
* Verilator 4.018 2019-08-29
** When showing an error, show source code and offer suggestions of replacements.
** When showing an error, show the instance location. (#1305) [Todd Strader]
*** Add --rr. (#1481) [Todd Strader]
*** Change MULTITOP to warning to help linting, see manual.
*** Add XSim support to driver.pl. (#1493) [Todd Strader]
**** Show included-from filenames in warnings. (#1439) [Todd Strader]
**** Fix elaboration time errors. (#1429) [Udi Finkelstein]
**** Fix not reporting some duplicate signals/ports. (#1462) [Peter Gerst]
**** Fix not in array context on non-power-of-two slices. (#2027) [Yu Sheng Lin]
**** Fix system compile flags injection. [Gianfranco Costamagna]
**** Fix enum values not being sized based on parent. (#1442) [Dan Petrisko]
**** Fix internal error on gate optimization of assign. (#1475) [Oyvind Harboe]
**** Add --dpi-hdr-only. (#1491) [Todd Strader]
* Verilator 4.016 2019-06-16
*** Add --quiet-exit. (#1436) [Todd Strader]
**** Error continuation lines no longer have %Error prefix.
**** Support logical equivalence operator <->.
**** Support VerilatedFstC set_time_unit. (#1433) [Pieter Kapsenberg]
**** Support deferred assertions. (#1449) [Charles Eddleston]
**** Mark infrequently called functions with GCC cold attribute.
**** Fix sign-compare warning in verilated.cpp. (#1437) [Sergey Kvachonok]
**** Fix fault on $realtime with %t. (#1443) [Julien Margetts]
**** Fix $display with string without %s. (#1441) [Denis Rystsov]
**** Fix parameter function string returns. (#1441) [Denis Rystsov]
**** Fix invalid XML output due to special chars. (#1444) [Kanad Kanhere]
**** Fix performance when mulithreaded on 1 CPU. (#1455) [Stefan Wallentowitz]
**** Fix type and real parameter issues (#1427) (#1456) (#1458) [Todd Strader]
**** Fix build error on MinGW. (#1460) [Richard Myers]
**** Fix not reporting some duplicate signals. (#1462) [Peter Gerst]
**** Fix --savable invalid C++ on packed arrays. (#1465) [Alex Chadwick]
**** Fix constant function return of function var. (#1467) [Roman Popov]
* Verilator 4.014 2019-05-08
*** Add --trace-fst-thread.
**** Support '#' comments in $readmem. (#1411) [Frederick Requin]
**** Support "'dx" constants. (#1423) [Udi Finkelstein]
**** For FST tracing use LZ4 compression. [Tony Bybell]
**** Add error when use parameters without value. (#1424) [Peter Gerst]
**** Auto-extend and WIDTH warn on unsized X/Zs. (#1423) [Udi Finkelstein]
**** Fix missing VL_SHIFTL_ errors. (#1412) (#1415) [Larry Lee]
**** Fix MinGW GCC 6 printf formats. (#1413) [Sergey Kvachonok]
**** Fix test problems when missing fst2vcd. (#1417) [Todd Strader]
**** Fix GTKWave register warning. (#1421) [Pieter Kapsenberg]
**** Fix FST enums not displaying. (#1426) [Danilo Ramos]
**** Fix table compile error with multiinterfaces. (#1431) [Bogdan Vukobratovic]
* Verilator 4.012 2019-03-23
*** Add +verilator+seed. (#1396) [Stan Sokorac]
*** Support $fread. [Leendert van Doorn]
*** Support void' cast on functions called as tasks. (#1383) [Al Grant]
*** Add IGNOREDRETURN warning. (#1383)
**** Report PORTSHORT errors on concat constants. (#1400) [Will Korteland]
**** Fix VERILATOR_GDB being ignored. (#2017) [Yu Sheng Lin]
**** Fix $value$plus$args missing verilated_heavy.h. [Yi-Chung Chen]
**** Fix MSVC compile error. (#1406) [Benjamin Gartner]
**** Fix maintainer test when no Parallel::Forker. (#1977) [Enzo Chi]
**** Fix +1364-1995ext flags applying too late. (#1384) [Al Grant]
* Verilator 4.010 2019-01-27
*** Removed --trace-lxt2, use --trace-fst instead.
**** For --xml, add additional information. (#1372) [Jonathan Kimmitt]
**** Add circular typedef error. (#1388) [Al Grant]
**** Add unsupported for loops error. (#1986) [Yu Sheng Lin]
**** Fix FST tracing of wide arrays. (#1376) [Aleksander Osman]
**** Fix error when pattern assignment has too few elements. (#1378) [Viktor Tomov]
**** Fix error when no modules in $unit. (#1381) [Al Grant]
**** Fix missing too many digits warning. (#1380) [Jonathan Kimmitt]
**** Fix uninitialized data in verFiles and unroller. (#1385) (#1386) [Al Grant]
**** Fix internal error on xrefs into unrolled functions. (#1387) [Al Grant]
**** Fix DPI export void compiler error. (#1391) [Stan Sokorac]
* Verilator 4.008 2018-12-01
*** Support "ref" and "const ref" pins and functions. (#1360) [Jake Longo]
*** In --xml-only show the original unmodified names, and add module_files
and cells similar to Verilog-Perl, msg2719. [Kanad Kanhere]
**** Add CONTASSREG error on continuous assignments to regs. (#1369) [Peter Gerst]
**** Add PROCASSWIRE error on behavioral assignments to wires, msg2737. [Neil Turton]
**** Add IMPORTSTAR warning on import::* inside $unit scope.
**** Fix --trace-lxt2 compile error on MinGW. (#1990) [HyungKi Jeong]
**** Fix hang on bad pattern keys. (#1364) [Matt Myers]
**** Fix crash due to cygwin bug in getline. (#1349) [Affe Mao]
**** Fix __Slow files getting compiled with OPT_FAST. (#1370) [Thomas Watts]
* Verilator 4.006 2018-10-27
** Add --pp-comments. (#1988) [Robert Henry]
** Add --dump-defines.
*** For --trace-fst, save enum decoding information. (#1358) [Sergi Granell]
(To visualize enumeration data you must use GTKwave 3.3.95 or newer.)
*** For --trace-fst, instead of *.fst.hier, put data into *.fst. [Tony Bybell]
**** Fix --trace-lxt2 compile error on MinGW, msg2667. [HyungKi Jeong]
**** Fix Windows .exe not found. (#1361) [Patrick Stewart]
* Verilator 4.004 2018-10-06
** Add GTKWave FST native tracing. (#1356) [Sergi Granell]
(Verilator developers need to pull the latest vcddiff.)
*** Support $past. [Dan Gisselquist]
*** Support restrict. (#1350) [Clifford Wolf]
*** Rename include/lxt2 to include/gtkwave.
**** Fix replication of 64-bit signal change detects.
**** Fix Mac OSX 10.13.6 / LLVM 9.1 compile issues. (#1348) [Kevin Kiningham]
**** Fix MinGW compile issues. (#1979) [HyungKi Jeong]
* Verilator 4.002 2018-09-16
** This is a major release. Any patches may require major rework to apply.
[Thanks everyone]
** Add multithreaded model generation.
** Add runtime arguments.
** Add GTKWave LXT2 native tracing. (#1333) [Yu Sheng Lin]
** Note $random has new algorithm; results may vary vs. previous versions.
*** Better optimize large always block splitting. (#1244) [John Coiner]
*** Add new reloop optimization for repetitive assignment compression.
*** Support string.atoi and similar methods. (#1289) [Joel Holdsworth]
**** Fix internals to be C++ null-pointer-check clean.
**** Fix internals to avoid 'using namespace std'.
**** Fix Verilation performance issues. (#1316) [John Coiner]
**** Fix clocker attributes to not propagate on concats. [John Coiner]
**** Fix first clock edge and --x-initial-edge. (#1327) [Rupert Swarbrick]
**** Fix compile error on tracing of string arrays. (#1338) [Iztok Jeras]
**** Fix number parsing with newline after radix. (#1340) [George Cuan]
**** Fix string ?: conditional type resolution. (#1345) [Iztok Jeras]
**** Fix duplicate symbol error on generate tri. (#1347) [Tomas Dzetkulic]
* Verilator 3.926 2018-08-22
**** Add OBJCACHE envvar support to examples and generated Makefiles.
**** Change MODDUP errors to warnings. (#1969) [Marshal Qiao]
**** Fix define argument stringification (`"), broke since 3.914. [Joe DErrico]
**** Fix to ignore Unicode UTF-8 BOM sequences. (#1967) [HyungKi Jeong]
**** Fix std:: build error. (#1322)
**** Fix function inlining inside certain while loops. (#1330) [Julien Margetts]
* Verilator 3.924 2018-06-12
*** Renamed --profile-cfuncs to --prof-cfuncs.
**** Report interface ports connected to wrong interface. (#1294) [Todd Strader]
**** When tracing, use scalars on single bit arrays to appease vcddiff.
**** Fix parsing "output signed" in V2K port list, msg2540. [James Jung]
**** Fix parsing error on bad missing #. (#1308) [Dan Kirkham]
**** Fix $clog2 to be in verilog 2005. (#1319) [James Hutchinson]
* Verilator 3.922 2018-03-17
** Support IEEE 1800-2017 as default language.
*** Support trig functions ($sin() etc). (#1281) [Patrick Stewart]
*** Support calling system functions as tasks. (#1285) [Joel Holdsworth]
*** Support assert properties. (#785) (#1290) [John Coiner, et al]
*** Support $writememh. [John Coiner]
*** Add --no-debug-leak to reduce memory use under debug. [John Coiner]
**** Fix severe runtime performance bug in certain foreach loops. [John Coiner]
**** On convergence errors, show activity. [John Coiner]
**** Fix GCC 8.0 issues. (#1273)
**** Fix pullup/pulldowns on bit selects. (#1274) [Rob Stoddard]
**** Fix verilator_coverage --annotate-min. (#1284) [Tymoteusz Blazejczyk]
**** Fix quoting of quoted arguments. [John Coiner]
* Verilator 3.920 2018-02-01
** Moving forward, use the git "stable" branch to track the latest release,
and git "v#.###" tags for specific releases.
*** Support 'assume' similar to 'assert'. (#1269) [Dan Gisselquist]
**** Fix tracing example file output. (#1268) [Enzo Chi]
**** Fix gate optimization out of memory, add --gate-stmts. (#1260) [Alex Solomatnikov]
**** Fix compile error on public real parameters by suppressing. (#1261) [Alex Solomatnikov]
**** Fix input-only tristate comparisons. (#1267) [Alexis G]
**** Fix missing edge type in xml output. (#1955) [Alexis G]
**** Fix compile error with --public and interface bind. (#1264) [Alexis G]
**** Remove c++filt. (#1265) [Stefan Wallentowitz]
* Verilator 3.918 2018-01-02
*** Workaround GCC/clang bug with huge compile times. (#1248)
*** Support DPI open arrays. (#909) (#1245) [David Pierce, Victor Besyakov]
*** Add INFINITELOOP warning. (#1254) [Alex Solomatnikov]
**** Support > 64 bit decimal $display.
**** Support DPI time and svLogicVal. [Victor Besyakov]
Note older version incorrectly assumed svBitVal even for logicals.
**** Support string len() method. [Victor Besyakov]
**** Add error if always_comb has sensitivity list. [Arjen Roodselaar]
**** Fix SystemC 2.3.2 compile error. (#1251) [Tymoteusz Blazejczyk]
**** Fix modport outputs being treated as inputs. (#1246) [Jeff Bush]
**** Fix false ALWCOMBORDER on interface references. (#1247) [Josh Redford]
**** Fix constant propagation across DPI imports of inout strings. [Victor Besyakov]
**** Fix resolving inline nested interface names. (#1250) [Arjen Roodselaar]
**** Fix GCC false warning on array bounds. (#2386)
* Verilator 3.916 2017-11-25
*** Support self-recursive modules. (#659) [Sean Moore, et al]
*** Support $error/$warning in elaboration time blocks.
*** Support $size/$bits/etc on type references.
*** Add error when driving input-only modport. (#1110) [Trevor Elbourne]
*** Add BSSPACE and COLONPLUS lint warnings.
**** Detect MSB overflow when under VL_DEBUG. (#1238) [Junyi Xi]
**** Add data types to --xml. [Rui Terra]
**** Fix partial slicing with pattern assignments. (#991) [Johan Bjork]
**** Fix false unused warning on interfaces. (#1241) [Laurens van Dam]
**** Fix error on "unique case" with no cases.
**** Fix MacOS portability. (#1232) [Jeff Bush]
* Verilator 3.914 2017-10-14
** Added new examples/ directory with appropriate examples. This replaces the
old test_c and test_sc directories.
*** Add --getenv option for simplifying Makefiles.
*** Add --x-initial option for specifying initial value assignment behavior.
*** Add --no-relative-cfuncs and related default optimization. (#1224) [John Coiner]
*** Add /*verilator tag*/ for XML extraction applications. [Chris Randall]
**** The internal test_verilated test directory is moved to be part of test_regress.
**** The experimental VL_THREADED setting (only, not normal mode) now requires C++11.
**** Fix over-aggressive inlining. (#1223) [John Coiner]
**** Fix Ubuntu 17.10 issues. (#1223 partial). [John Coiner]
**** Fix compiler warning when WIDTH warning ignored on large compare.
**** Fix memory leak in VerilatedVcd dumps. (#1222 partial) [Shareef Jalloq]
**** Fix unnecessary Vdly variables. (#1224 partial) [John Coiner]
**** Fix conditional slices and add related optimizations.
**** Fix `` expansion of `defines. (#1225) (#1227) (#1228) [Odd Magne Reitan]
**** Fix -E duplicating output. (#1226) [Odd Magne Reitan]
**** Fix float-conversion warning. (#1229) [Robert Henry]
**** Fix MacOS portability. (#1230) (#1231) [Jeff Bush]
* Verilator 3.912 2017-09-23
** Verilated headers no longer "use namespace std;"
User's code without "std::" prefixes may need "use namespace std;" to compile.
*** Support or/and/xor array intrinsic methods. (#1210) [Mike Popoloski]
*** Support package export. (#1217) [Usuario Eda]
*** Fix ordering of arrayed cell wide connections. (#1202 partial) [Mike Popoloski]
**** Support module port parameters without defaults. (#1213) [Mike Popoloski]
**** Add performance information to --stats file.
**** Simplify VL_CONST_W macro generation for faster compiles.
**** Fix LITENDIAN warning on arrayed cells. (#1202) [Mike Popoloski]
**** Fix enum ranges without colons. (#1204) [Mike Popoloski]
**** Fix GCC noreturn compile error. (#1209) [Mike Popoloski]
**** Fix constant function default parameters. (#1211) [Mike Popoloski]
**** Fix non-colon array of interface modports. (#1212) [Mike Popoloski]
**** Fix .name connections on interfaces. (#1214) [Mike Popoloski]
**** Fix wide array indices causing compile error.
**** Better optimize Shift-And, and replication constructs.
* Verilator 3.910 2017-09-07
*** SystemPerl mode (-sp-deprecated) has been removed.
**** Update keyword warnings to include C++11 and others.
* Verilator 3.908 2017-08-28
**** Support x in $readmem. (#1180) [Arthur Kahlich]
**** Support packed struct DPI imports. (#1190) [Rob Stoddard]
**** Fix GCC 6 warnings.
**** Fix compile error on unused VL_VALUEPLUSARGS_IW. (#1181) [Thomas J Whatson]
**** Fix undefined VL_POW_WWI. [Clifford Wolf]
**** Fix internal error on unconnected inouts. (#1187) [Rob Stoddard]
* Verilator 3.906 2017-06-22
*** Support set_time_unit/set_time_precision in C traces. (#1937)
*** Fix extract of packed array with non-zero LSB. (#1172) [James Pallister]
*** Fix shifts by more than 32-bit numbers. (#1174) [Clifford Wolf]
*** Fix power operator on wide constants. (#761) [Clifford Wolf]
*** Fix .* on interface pins. (#1176) [Maciej Piechotka]
* Verilator 3.904 2017-05-30
*** Fix non-cutable ordering loops on clock arrays. (#1009) [Todd Strader]
*** Support ports of array of reals. (#1154) [J Briquet]
*** Support arrayed parameter overrides. (#1153) [John Stevenson]
*** Support $value$plusargs with variables. (#1165) [Wesley Terpstra]
**** Support modport access to un-modport objects. (#1161) [Todd Strader]
**** Add stack trace when can't optimize function. (#1158) [Todd Strader]
**** Add warning on mis-sized literal. (#1156) [Todd Strader]
**** Fix interface functions returning wrong parameters. (#996) [Todd Strader]
**** Fix non-arrayed cells with interface arrays. (#1153) [John Stevenson]
**** Fix --assert with complex case statements. (#1164) [Enzo Chi]
* Verilator 3.902 2017-04-02
** Add -FI option to force includes. (#1916) [Amir Gonnen]
** Add --relative-includes. [Rob Stoddard]
*** Add error on duplicate pattern assignments. (#1145) [Johan Bjork]
**** Fix error on improperly widthed default function. (#984) [Todd Strader]
**** Fix 2009 localparam syntax, msg2139. [Galen Seitz]
**** Fix ugly interface-to-non-interface errors. (#1112) [Johan Bjork]
**** Fix LDFLAGS and CFLAGS not preserving order. (#1130) [Olof Kindgren]
**** Fix internal error on initializing parameter array. (#1131) [Jie Xu]
**** Fix internal error on interface arrays. (#1135) [John Stevenson]
**** Fix calling sformatf to display, and elab $displays. (#1139) [Johan Bjork]
**** Fix realpath compile issue on MSVC++. (#1141) [Miodrag Milanovic]
**** Fix missing error on interface size mismatch. (#1143) [Johan Bjork]
**** Fix error on parameters with dotted references. (#1146) [Johan Bjork]
**** Fix wreal not handling continuous assign. (#1150) [J Briquet]
**** Fix nested structure parameter selects. (#1150) [J Briquet]
* Verilator 3.900 2017-01-15
** Internal code changes for improved compatibility and performance.
*** Support old-style $display($time). (#467) [John Demme]
**** With --bbox-unsup, suppress desassign and mixed edges. (#1120) [Galen Seitz]
**** Fix parsing sensitivity with &&. (#934) [Luke Yang]
**** Fix internal error on double-for loop unrolling. (#1044) [Jan Egil Ruud]
**** Fix internal error on unique casez with --assert. (#1117) [Enzo Chi]
**** Fix bad code when tracing array of structs. (#1122) [Andrew Bardsley]
* Verilator 3.890 2016-11-25
*** Honor --output-split on coverage constructors. (#1098) [Johan Bjork]
**** Fix various issues when making outside of the kit.
**** Fix flex 2.6.2 bug. (#1103) [Sergey Kvachonok]
**** Fix error on bad interface name. (#1097) [Todd Strader]
**** Fix error on referencing variable in parent. (#1099) [Ian Thompson]
**** Fix type parameters with low optimization. (#1101) [Stefan Wallentowitz]
* Verilator 3.888 2016-10-14
** Support foreach. (#1078) [Xuan Guo]
*** Add --no-decoration to remove output comments, msg2015. [Frederic Requin]
*** If VM_PARALLEL_BUILDS=1, use OPT_FAST and OPT_SLOW. [Frederic Requin]
Set VM_DEFAULT_RULES=0 for old behavior.
**** Add error on DPI functions > 32 bits. (#1898) [Elliot Mednick]
**** Fix SystemC compiles with VPI. (#1081) [Arthur Kahlich]
**** Fix error on wide numbers that represent shifts, msg1991. (#1088) [Mandy Xu]
**** Improve Verilation performance on internal strings. (#1896) [Johan Bjork]
**** Improve Verilation performance on trace duplicates. (#1090) [Johan Bjork]
* Verilator 3.886 2016-07-30
**** Fix enum values of 11-16 bits wide using .next/.prev. (#1062) [Brian Flachs]
**** Fix false warnings on non-power-2 enums using .next/.prev.
**** Fix comparison of unpacked arrays. (#1071) [Andrew Bardsley]
**** Fix compiler warning in GCC 6. [David Horton]
* Verilator 3.884 2016-05-18
** Support parameter type. (#376) [Alan Hunter, et al]
** Support command-line -G/+pvalue param overrides. (#1045) [Stefan Wallentowitz]
*** The default l2 scope name is now the same as the top-level module. (#1050)
Use "--l2-name v" for the historical behavior.
*** Add --l2-name option for controlling "v" naming.
**** Fix --output-split of constructors. (#1035) [Johan Bjork]
**** Fix removal of empty packages, modules and cells. (#1034) [Johan Bjork]
**** Fix core dump on Arch Linux/GCC 6.1.1. (#1058) [Jannis Harder]
**** Fix $value$plusargs to string. (#1880) [Frederic Requin]
* Verilator 3.882 2016-03-01
**** Internal Verilation-time performance enhancements. (#1021) [Johan Bjork]
**** Support inlining interfaces. (#1018) [Johan Bjork]
**** Support SV strings to readmemh. (#1040) [Stefan Wallentowitz]
**** Fix unrolling complicated for-loop bounds. (#677) [Johan Bjork]
**** Fix stats file containing multiple unroll entries. (#1020) [Johan Bjork]
**** Fix using short parameter names on negative params. (#1022) [Duraid Madina]
**** Fix read-after-free error. (#1031) [Johan Bjork]
**** Fix elaboration-time display warnings. (#1032) [Johan Bjork]
**** Fix crash on very deep function trees. (#1028) [Jonathan Kimmitt]
**** Fix slicing mix of big and little-endian. (#1033) [Geoff Barrett]
**** Fix pattern assignment width propagation. (#1037) [Johan Bjork]
* Verilator 3.880 2015-12-19
*** Support display %u, %v, %p, %z. (#989) [Johan Bjork]
**** Fix real parameters causing bad module names. (#992) [Johan Bjork]
**** Fix size-changing cast on packed struct. (#993) [Johan Bjork]
**** Fix function calls on arrayed interface. (#994) [Johan Bjork]