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Revision history for Verilator
The contributors that suggested a given feature are shown in []. Thanks!
* Verilator 4.005 devel
*** For --trace-fst, save enum decoding information, bug1358. [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]
* Verilator 4.004 2018-10-6
** Add GTKWave FST native tracing, bug1356. [Sergi Granell]
(Verilator developers need to pull the latest vcddiff.)
*** Support $past. [Dan Gisselquist]
*** Support restrict, bug1350. [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, bug1348. [Kevin Kiningham]
**** Fix MinGW compile issues, msg2636. [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, bug1333. [Yu Sheng Lin]
** Note $random has new algorithm; results may vary vs. previous versions.
*** Better optimize large always block splitting, bug1244. [John Coiner]
*** Add new reloop optimization for repetitive assignment compression.
*** Support string.atoi and similar methods, bug1289. [Joel Holdsworth]
**** Fix internals to be C++ null-pointer-check clean.
**** Fix internals to avoid 'using namespace std'.
**** Fix Verilation performance issues, bug1316. [John Coiner]
**** Fix clocker attributes to not propagate on concats. [John Coiner]
**** Fix first clock edge and --x-initial-edge, bug1327. [Rupert Swarbrick]
**** Fix compile error on tracing of string arrays, bug1338. [Iztok Jeras]
**** Fix number parsing with newline after radix, bug1340. [George Cuan]
**** Fix string ?: conditional type resolution, bug1345. [Iztok Jeras]
**** Fix duplicate symbol error on generate tri, bug1347. [Tomas Dzetkulic]
* Verilator 3.926 2018-08-22
**** Add OBJCACHE envvar support to examples and generated Makefiles.
**** Change MODDUP errors to warnings, msg2588. [Marshal Qiao]
**** Fix define argument stringification (`"), broke since 3.914. [Joe DErrico]
**** Fix to ignore Unicode UTF-8 BOM sequences, msg2576. [HyungKi Jeong]
**** Fix std:: build error, bug1322.
**** Fix function inlining inside certain while loops, bug1330. [Julien Margetts]
* Verilator 3.924 2018-06-12
*** Renamed --profile-cfuncs to --prof-cfuncs.
**** Report interface ports connected to wrong interface, bug1294. [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 #, bug1308. [Dan Kirkham]
**** Fix $clog2 to be in verilog 2005, bug1319. [James Hutchinson]
* Verilator 3.922 2018-03-17
** Support IEEE 1800-2017 as default language.
*** Support trig functions ($sin() etc), bug1281. [Patrick Stewart]
*** Support calling system functions as tasks, bug1285. [Joel Holdsworth]
*** Support assert properties, bug785, bug1290. [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, bug1273.
**** Fix pullup/pulldowns on bit selects, bug1274. [Rob Stoddard]
**** Fix verilator_coverage --annotate-min, bug1284. [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', bug1269. [Dan Gisselquist]
**** Fix tracing example file output, bug1268. [Enzo Chi]
**** Fix gate optimization out of memory, add --gate-stmts, bug1260. [Alex Solomatnikov]
**** Fix compile error on public real parameters by suppressing, bug1261. [Alex Solomatnikov]
**** Fix input-only tristate comparisons, bug1267. [Alexis G]
**** Fix missing edge type in xml output, msg2480. [Alexis G]
**** Fix compile error with --public and interface bind, bug1264. [Alexis G]
**** Remove c++filt, bug1265. [Stefan Wallentowitz]
* Verilator 3.918 2018-01-02
*** Workaround GCC/clang bug with huge compile times, bug1248.
*** Support DPI open arrays, bug909, bug1245. [David Pierce, Victor Besyakov]
*** Add INFINITELOOP warning, bug1254. [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, bug1251. [Tymoteusz Blazejczyk]
**** Fix modport outputs being treated as inputs, bug1246. [Jeff Bush]
**** Fix false ALWCOMBORDER on interface references, bug1247. [Josh Redford]
**** Fix constant propagation across DPI imports of inout strings. [Victor Besyakov]
**** Fix resolving inline nested interface names, bug1250. [Arjen Roodselaar]
* Verilator 3.916 2017-11-25
*** Support self-recursive modules, bug659. [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, bug1110. [Trevor Elbourne]
*** Add BSSPACE and COLONPLUS lint warnings.
**** Detect MSB overflow when under VL_DEBUG, bug1238. [Junyi Xi]
**** Add data types to --xml. [Rui Terra]
**** Fix partial slicing with pattern assignments, bug991. [Johan Bjork]
**** Fix false unused warning on interfaces, bug1241. [Laurens van Dam]
**** Fix error on "unique case" with no cases.
**** Fix MacOS portability, bug1232. [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, bug1224. [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, bug1223. [John Coiner]
**** Fix Ubuntu 17.10 issues, bug1223 partial. [John Coiner]
**** Fix compiler warning when WIDTH warning ignored on large compare.
**** Fix memory leak in VerilatedVcd dumps, bug1222 partial. [Shareef Jalloq]
**** Fix unnecessary Vdly variables, bug1224 partial. [John Coiner]
**** Fix conditional slices and add related optimizations.
**** Fix `` expansion of `defines, bug1225, bug1227, bug1228. [Odd Magne Reitan]
**** Fix -E duplicating output, bug1226. [Odd Magne Reitan]
**** Fix float-conversion warning, bug1229. [Robert Henry]
**** Fix MacOS portability, bug1230, bug1231. [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, bug1210. [Mike Popoloski]
*** Support package export, bug1217. [Usuario Eda]
*** Fix ordering of arrayed cell wide connections, bug1202 partial. [Mike Popoloski]
**** Support module port parameters without defaults, bug 1213. [Mike Popoloski]
**** Add performance information to --stats file.
**** Simplify VL_CONST_W macro generation for faster compiles.
**** Fix LITENDIAN warning on arrayed cells, bug1202. [Mike Popoloski]
**** Fix enum ranges without colons, bug1204. [Mike Popoloski]
**** Fix GCC noreturn compile error, bug1209. [Mike Popoloski]
**** Fix constant function default parameters, bug1211. [Mike Popoloski]
**** Fix non-colon array of interface modports, bug1212. [Mike Popoloski]
**** Fix .name connections on interfaces, bug1214. [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, bug1180. [Arthur Kahlich]
**** Support packed struct DPI imports, bug1190. [Rob Stoddard]
**** Fix GCC 6 warnings.
**** Fix compile error on unused VL_VALUEPLUSARGS_IW, bug1181. [Thomas J Whatson]
**** Fix undefined VL_POW_WWI. [Clifford Wolf]
**** Fix internal error on unconnected inouts, bug1187. [Rob Stoddard]
* Verilator 3.906 2017-06-22
*** Support set_time_unit/set_time_precision in C traces, msg2261.
*** Fix extract of packed array with non-zero LSB, bug1172. [James Pallister]
*** Fix shifts by more than 32-bit numbers, bug1174. [Clifford Wolf]
*** Fix power operator on wide constants, bug761. [Clifford Wolf]
*** Fix .* on interface pins, bug1176. [Maciej Piechotka]
* Verilator 3.904 2017-05-30
*** Fix non-cutable ordering loops on clock arrays, bug1009. [Todd Strader]
*** Support ports of array of reals, bug1154. [J Briquet]
*** Support arrayed parameter overrides, bug1153. [John Stevenson]
*** Support $value$plusargs with variables, bug1165. [Wesley Terpstra]
**** Support modport access to un-modport objects, bug1161. [Todd Strader]
**** Add stack trace when can't optimize function, bug1158. [Todd Strader]
**** Add warning on mis-sized literal, bug1156. [Todd Strader]
**** Fix interface functions returning wrong parameters, bug996. [Todd Strader]
**** Fix non-arrayed cells with interface arrays, bug1153. [John Stevenson]
**** Fix --assert with complex case statements, bug1164. [Enzo Chi]
* Verilator 3.902 2017-04-02
** Add -FI option to force includes,msg2146. [Amir Gonnen]
** Add --relative-includes. [Rob Stoddard]
*** Add error on duplicate pattern assignments, bug1145. [Johan Bjork]
**** Fix error on improperly widthed default function, bug984. [Todd Strader]
**** Fix 2009 localparam syntax, msg2139. [Galen Seitz]
**** Fix ugly interface-to-non-interface errors, bug1112. [Johan Bjork]
**** Fix LDFLAGS and CFLAGS not preserving order, bug1130. [Olof Kindgren]
**** Fix internal error on initializing parameter array, bug1131. [Jie Xu]
**** Fix internal error on interface arrays, bug1135. [John Stevenson]
**** Fix calling sformatf to display, and elab $displays, bug1139. [Johan Bjork]
**** Fix realpath compile issue on MSVC++, bug1141. [Miodrag Milanovic]
**** Fix missing error on interface size mismatch, bug1143. [Johan Bjork]
**** Fix error on parameters with dotted references, bug1146. [Johan Bjork]
**** Fix wreal not handling continuous assign, bug1150. [J Briquet]
**** Fix nested structure parameter selects, bug1150. [J Briquet]
* Verilator 3.900 2017-01-15
** Internal code changes for improved compatibility and performance.
*** Support old-style $display($time), bug467. [John Demme]
**** With --bbox-unsup, suppress desassign and mixed edges, bug1120. [Galen Seitz]
**** Fix parsing sensitivity with &&, bug934. [Luke Yang]
**** Fix internal error on double-for loop unrolling, bug1044. [Jan Egil Ruud]
**** Fix internal error on unique casez with --assert, bug1117. [Enzo Chi]
**** Fix bad code when tracing array of structs, bug1122. [Andrew Bardsley]
* Verilator 3.890 2016-11-25
*** Honor --output-split on coverage constructors, bug1098. [Johan Bjork]
**** Fix various issues when making outside of the kit.
**** Fix flex 2.6.2 bug, bug1103. [Sergey Kvachonok]
**** Fix error on bad interface name, bug1097. [Todd Strader]
**** Fix error on referencing variable in parent, bug1099. [Ian Thompson]
**** Fix type parameters with low optimization, bug1101. [Stefan Wallentowitz]
* Verilator 3.888 2016-10-14
** Support foreach, bug1078. [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, msg1995. [Elliot Mednick]
**** Fix SystemC compiles with VPI, bug1081. [Arthur Kahlich]
**** Fix error on wide numbers that represent shifts, msg1991, bug1088. [Mandy Xu]
**** Improve Verilation performance on internal strings, msg1975. [Johan Bjork]
**** Improve Verilation performance on trace duplicates, bug1090. [Johan Bjork]
* Verilator 3.886 2016-07-30
**** Fix enum values of 11-16 bits wide using .next/.prev, bug1062. [Brian Flachs]
**** Fix false warnings on non-power-2 enums using .next/.prev.
**** Fix comparison of unpacked arrays, bug1071. [Andrew Bardsley]
**** Fix compiler warning in GCC 6. [David Horton]
* Verilator 3.884 2016-05-18
** Support parameter type, bug376. [Alan Hunter, et al]
** Support command-line -G/+pvalue param overrides, bug1045. [Stefan Wallentowitz]
*** The default l2 scope name is now the same as the top-level module, bug1050.
Use "--l2-name v" for the historical behavior.
*** Add --l2-name option for controlling "v" naming.
**** Fix --output-split of constructors, bug1035. [Johan Bjork]
**** Fix removal of empty packages, modules and cells, bug1034. [Johan Bjork]
**** Fix core dump on Arch Linux/GCC 6.1.1, bug1058. [Jannis Harder]
**** Fix $value$plusargs to string, msg1890. [Frederic Requin]
* Verilator 3.882 2016-03-01
**** Internal Verilation-time performance enhancements, bug1021. [Johan Bjork]
**** Support inlining interfaces, bug1018. [Johan Bjork]
**** Support SV strings to readmemh, bug1040. [Stefan Wallentowitz]
**** Fix unrolling complicated for-loop bounds, bug677. [Johan Bjork]
**** Fix stats file containing multiple unroll entries, bug1020. [Johan Bjork]
**** Fix using short parameter names on negative params, bug1022. [Duraid Madina]
**** Fix read-after-free error, bug1031. [Johan Bjork]
**** Fix elaboration-time display warnings, bug1032. [Johan Bjork]
**** Fix crash on very deep function trees, bug1028. [Jonathan Kimmitt]
**** Fix slicing mix of big and little-endian, bug1033. [Geoff Barrett]
**** Fix pattern assignment width propagation, bug1037. [Johan Bjork]
* Verilator 3.880 2015-12-19
*** Support display %u, %v, %p, %z, bug989. [Johan Bjork]
**** Fix real parameters causing bad module names, bug992. [Johan Bjork]
**** Fix size-changing cast on packed struct, bug993. [Johan Bjork]
**** Fix function calls on arrayed interface, bug994. [Johan Bjork]
**** Fix arrayed interfaces, bug879, bug1001. [Todd Strader]
**** Fix constant function assigned to packed structs, bug997. [Johan Bjork]
**** Fix interface inside generate, bug998. [Johan Bjork]
**** Fix $signed casts under generates, bug999. [Clifford Wolf]
**** Fix genvar constant propagation, bug1003. [Johan Bjork]
**** Fix parameter constant propagation from package, bug1004. [Johan Bjork]
**** Fix array slicing of non-const indexes, bug1006. [Johan Bjork]
**** Fix dotted generated array error, bug1005. [Jeff Bush, Johan Bjork]
**** Fix error instead of warning on large concat, msg1768. [Paul Rolfe]
**** Fix $bitstoreal constant propagation, bug1012. [Jonathan Kimmitt]
**** Fix model restore crash, bug1013. [Jason McMullan]
**** Fix arrayed instances to unpacked of same size, bug1015. [Varun Koyyalagunta]
**** Fix slices of unpacked arrays with non-zero LSBs.
**** Fix ternary operation with unpacked array, bug1017. [Varun Koyyalagunta].
* Verilator 3.878 2015-11-01
** Add --vpi flag, and fix VPI linkage, bug969. [Arthur Kahlich]
** Support genvar indexes into arrayed cells, bug517. [Todd Strader]
** Support $sformatf, bug977. [Johan Bjork]
*** Support elaboration assertions, bug973. [Johan Bjork]
*** Support $display with non-format arguments, bug467. [Jamey Hicks]
**** Add VerilatedScopeNameMap for introspection, bug966. [Todd Strader]
**** Ignore %l in $display, bug983. [Todd Strader]
**** Fix very long module names, bug937. [Todd Strader]
**** Fix internal error on dotted refs into generates, bug958. [Jie Xu]
**** Fix structure parameter constant propagation, bug968. [Todd Strader]
**** Fix enum constant propagation, bug970. [Todd Strader]
**** Fix mis-optimizing public DPI functions, bug963. [Wei Song]
**** Fix package:scope.scope variable references.
**** Fix $fwrite to constant stderr/stdout, bug961. [Wei Song]
**** Fix struct.enum.name method calls, bug855. [Jonathon Donaldson]
**** Fix dot indexing into arrayed inferfaces, bug978. [Johan Bjork]
**** Fix crash in commandArgsPlusMatch, bug987. [Jamie Iles]
**** Fix error message on missing interface, bug985. [Todd Strader]
* Verilator 3.876 2015-08-12
*** Add tracing_on, etc to vlt files, bug932. [Frederic Requin]
**** Support extraction of enum bits, bug951. [Jonathon Donaldson]
**** Fix MinGW compiler error, bug927, bug929. [Hans Tichelaar]
**** Fix .c files to be treated as .cpp, bug930. [Jonathon Donaldson]
**** Fix string-to-int space conversion, bug931. [Fabrizio Ferrandi]
**** Fix dpi imports inside generates. [Michael Tresidder]
**** Fix rounding in trace $timescale, bug946. [Frederic Requin]
**** Fix $fopen with SV string, bug947. [Sven Stucki]
**** Fix hashed error with typedef inside block, bug948. [Sven Stucki]
**** Fix makefile with --coverage, bug953. [Eivind Liland]
**** Fix coverage documentation, bug954. [Thomas J Whatson]
**** Fix parameters with function parameter arguments, bug952. [Jie Xu]
**** Fix size casts as second argument of cast item, bug950. [Jonathon Donaldson]
* Verilator 3.874 2015-06-06
*** Add pkg-config .pc file, bug919. [Stefan Wallentowitz]
**** Fix installing missing manpages, bug908. [Ahmed El-Mahmoudy]
**** Fix sign extension in large localparams, bug910. [Mike Thyer]
**** Fix core dump in sync-async warnings, bug911. [Sebastian Dressler]
**** Fix truncation warning with -pins-bv, bug912. [Alfonso Martinez]
**** Fix Cygwin uint32 compile, bug914. [Matthew Barr]
**** Fix preprocessing stringified newline escapes, bug915. [Anton Rapp]
**** Fix part-select in constant function, bug916. [Andrew Bardsley]
**** Fix width extension on mis-width ports, bug918. [Patrick Maupin]
**** Fix width propagation on sized casts, bug925. [Jonathon Donaldson]
**** Fix MSVC++ compiler error, bug927. [Hans Tichelaar]
* Verilator 3.872 2015-04-05
*** Add VerilatedVcdFile to allow real-time waveforms, bug890. [HyungKi Jeong]
*** Add --clk and related optimizations, msg1533. [Jie Xu]
*** Fix order of C style arrays. [Duraid Madina]
**** Add --dump-treei-<srcfile>, bug894. [Jie Xu]
**** Fix comma-instantiations with parameters, bug884. [Franck Jullien]
**** Fix SystemC arrayed bit vectors, bug886. [David Poole]
**** Fix compile error on MinGW, bug887. [HyungKi Jeong]
* Verilator 3.870 2015-02-12
**** Suppress COMBDLY when inside always_latch, bug864. [Iztok Jeras]
**** Support cast operator with expression size, bug865. [Iztok Jeras]
**** Add warning on slice selection out of bounds, bug875. [Cong Van Nguyen].
**** Fix member select error broke in 3.868, bug867. [Iztok Jeras]
**** Fix $sccanf from string, bug866. [David Pierce]
**** Fix VM_PARALLEL_BUILDS broke in 3.868, bug870. [Hiroki Honda]
**** Fix non-ANSI modport instantiations, bug868. [Kevin Thompson]
**** Fix UNOPTFLAT change detect on multidim arrays, bug872. [Andrew Bardsley]
**** Fix slice connections of arrays to ports, bug880. [Varun Koyyalagunta]
**** Fix mis-optimizing gate assignments in unopt blocks, bug881. [Mike Thyer]
**** Fix sign extension of pattern members, bug882. [Iztok Jeras]
**** Fix clang compile warnings.
* Verilator 3.868 2014-12-20
** New verilator_coverage program added to replace SystemPerl's vcoverage.
** PSL support was removed, please use System Verilog assertions.
** SystemPerl mode is deprecated and now untested.
*** Support enum.first/name and similar methods, bug460, bug848.
*** Add 'string' printing and comparisons, bug746, bug747, etc.
*** Inline C functions that are used only once, msg1525. [Jie Xu]
*** Fix tracing SystemC signals with structures, bug858. [Eivind Liland]
Note that SystemC traces will no longer show the signals
in the wrapper, they can be seen one level further down.
**** Add --stats-vars, bug851. [Jeremy Bennett]
**** Fix bare generates in interfaces, bug789. [Bob Newgard]
**** Fix underscores in real literals, bug863. [Jonathon Donaldson]
* Verilator 3.866 2014-11-15
*** Fix +define+A+B to define A and B to match other simulators, bug847. [Adam Krolnik]
*** Add optimization of wires from arrayed cells, msg1447. [Jie Xu]
*** Add optimization of operators between concats, msg1447. [Jie Xu]
*** Add public enums, bug833. [Jonathon Donaldson]
*** Trace_off now operates on cells, bug826. [Lane Brooks]
**** Fix public parameters in unused packages, bug804. [Jonathon Donaldson]
**** Fix select when partially out-of-bound, bug823. [Cliffort Wolf]
**** Fix generate unrolling with function call, bug830. [Steven Slatter]
**** Fix cast-to-size context-determined sizing, bug828. [Geoff Barrett]
**** Fix not tracing modules following primitives, bug837. [Jie Xu]
**** Fix trace overflow on huge arrays, bug834. [Geoff Barrett]
**** Fix quoted comment slashes in defines, bug845. [Adam Krolnik]
* Verilator 3.864 2014-09-21
*** Support power operator with real, bug809. [Jonathon Donaldson]
**** Improve verilator_profcfunc time attributions. [Jonathon Donaldson]
**** Fix duplicate anonymous structures in $root, bug788. [Bob Newgard]
**** Fix mis-optimization of bit-swap in wide signal, bug800. [Jie Xu]
**** Fix error when tracing public parameters, bug722. [Jonathon Donaldson]
**** Fix dpiGetContext in dotted scopes, bug740. [Geoff Barrett]
**** Fix over-shift structure optimization error, bug803. [Jeff Bush]
**** Fix optional parameter keyword in module #(), bug810. [Iztok Jeras]
**** Fix $warning/$error multi-argument ordering, bug816. [Jonathon Donaldson]
**** Fix clang warnings, bug818. [Iztok Jeras]
**** Fix string formats under deep expressions, bug820. [Iztok Jeras]
* Verilator 3.862 2014-06-10
*** Using command line -Wno-{WARNING} now overrides file-local lint_on.
*** Add -P to suppress `line and blanks with preprocessing, bug781. [Derek Lockhart]
*** Support SV 2012 package import before port list.
**** Change SYMRSVDWORD to print as warning rather than error.
**** Fix seg-fault with variable of parameterized interface, bug692. [Jie Xu]
**** Fix false name conflict on cells in generate blocks, bug749. [Igor Lesik]
**** Fix pattern assignment to basic types, bug767. [Jie Xu]
**** Fix pattern assignment to conditionals, bug769. [Jie Xu]
**** Fix shift corner-cases, bug765, bug766, bug768, bug772, bug774, bug776. [Clifford Wolf]
**** Fix C compiler interpreting signing, bug773. [Clifford Wolf]
**** Fix late constant division by zero giving X error, bug775. [Clifford Wolf]
**** Fix gate primitives with arrays and non-arrayed pins.
**** Fix DETECTARRAY error on packed arrays, bug770. [Jie Xu]
**** Fix ENDLABEL warnings on escaped identifiers.
**** Fix string corruption, bug780. [Derek Lockhart]
* Verilator 3.860 2014-05-11
** PSL is no longer supported, please use System Verilog assertions.
** Support '{} assignment pattern on arrays, bug355.
** Support streaming operators, bug649. [Glen Gibb]
** Fix expression problems with -Wno-WIDTH, bug729, bug736, bug737, bug759.
Where WIDTH warnings were ignored this might result in different
warning messages and results, though it should better match the spec.
[Clifford Wolf]
*** Add --no-trace-params.
*** Add assertions on 'unique if', bug725. [Jeff Bush]
*** Add PINCONNECTEMPTY warning. [Holger Waechtler]
*** Support parameter arrays, bug683. [Jeremy Bennett]
*** Fix begin_keywords "1800+VAMS", msg1211.
**** Documentation fixes, bug723. [Glen Gibb]
**** Support {} in always sensitivity lists, bug745. [Igor Lesik]
**** Fix tracing of package variables and real arrays.
**** Fix tracing of packed arrays without --trace-structs, bug742. [Jie Xu]
**** Fix missing coverage line on else-if, bug727. [Sharad Bagri]
**** Fix modport function import not-found error.
**** Fix power operator calculation, bug730, bug735. [Clifford Wolf]
**** Fix reporting struct members as reserved words, bug741. [Chris Randall]
**** Fix change detection error on unions, bug758. [Jie Xu]
**** Fix -Wno-UNOPTFLAT change detection with 64-bits, bug762. [Clifford Wolf]
**** Fix shift-right optimization, bug763. [Clifford Wolf]
**** Fix Mac OS-X test issues. [Holger Waechtler]
**** Fix C++-2011 warnings.
* Verilator 3.856 2014-03-11
*** Support case inside, bug708. [Jan Egil Ruud]
*** Add parameters into trace files, bug706. [Alex Solomatnikov]
**** Fix parsing "#0 'b0", bug256.
**** Fix array bound checks on real variables.
**** Fix --skip-identical mis-detecting on OS-X, bug707.
**** Fix missing VL_SHIFTRS_IQI with WIDTH warning, bug714. [Fabrizio Ferrandi]
**** Fix signed shift right optimization, bug715. [Fabrizio Ferrandi]
**** Fix internal error on "input x =" syntax error, bug716. [Lane Brooks]
**** Fix slice extraction from packed array, bug717. [Jan Egil Ruud]
**** Fix inside statement EQWILD error, bug718. [Jan Egil Ruud]
* Verilator 3.855 2014-01-18
*** Support modport import, bug696. [Jeremy Bennett]
*** Add --trace-structs to show struct names, bug673. [Chris Randall]
**** Fix tracing of packed structs, bug705. [Jie Xu]
**** Fix --lint-only with MinGW, msg1283. [HyungKi Jeong]
**** Fix some delayed assignments of typedefed unpacked arrays.
**** Fix wire declarations with size and not range, bug466. [Alex Solomatnikov]
**** Fix parameter pin vs. normal pin error, bug704. [Alex Solomatnikov]
* Verilator 3.854 2013-11-26
*** Add UNPACKED warning to convert unpacked structs. [Jeremy Bennett]
*** Add --compiler clang to work around compiler bug, bug694. [Stefan Ludwig]
**** Support vpi_get of vpiSuppressVal, bug687. [Varun Koyyalagunta]
**** Support vpi_get_time, bug688. [Varun Koyyalagunta]
**** Fix evaluation of chained parameter functions, bug684. [Ted Campbell]
**** Fix enum value extension of '1.
**** Fix multiple VPI variable callbacks, bug679. [Rich Porter]
**** Fix vpi_get of vpiSize, bug680. [Rich Porter]
**** Fix vpi_remove_cb inside callback, bug689. [Varun Koyyalagunta]
**** Fix crash with coverage of structures, bug691. [Eivind Liland]
**** Fix array assignment from const var, bug693. [Jie Xu]
* Verilator 3.853 2013-09-30
**** Add --no-order-clock-delay to work around bug613. [Charlie Brej]
* Verilator 3.852 2013-09-29
*** Support named function and task arguments. [Chris Randall]
*** Report SELRANGE warning for non-generate if, bug675. [Roland Kruse]
**** Fix ordering of $fgetc, msg1229. [Frederic Requin]
**** Fix --output-split-cfunc to count internal functions. [Chris Randall]
**** Fix crash on 32-bit Ubuntu, bug670. [Mark Jackson Pulver]
* Verilator 3.851 2013-08-15
*** Fix ordering of clock enables with delayed assigns, bug613. [Jeremy Bennett]
*** Fix vpi_iterate on memory words, bug655. [Rich Porter]
**** Fix final duplicate declarations when non-inlined, bug661. [Charlie Brej]
**** Fix interface ports with comma lists, msg1058. [Ed Lander]
**** Fix parameter real conversion from integer.
**** Fix clang warnings, bug668. [Yutetsu Takatsukasa]
* Verilator 3.850 2013-06-02
** Support interfaces and modports, bug102. [Byron Bradley, Jeremy Bennett]
*** Duplicate clock gate optimization on by default, bug621.
**** Fix arrayed input compile error, bug645. [Krzysztof Jankowski]
**** Fix GCC version runtime changes, bug651. [Jeremy Bennett]
**** Fix packed array select internal error, bug652. [Krzysztof Jankowski]
* Verilator 3.847 2013-05-11
*** Add ALWCOMBORDER warning. [KC Buckenmaier]
*** Add --pins-sc-uint and --pins-sc-biguint, bug638. [Alex Hornung]
**** Support "signal[vec]++".
**** Fix simulation error when inputs and MULTIDRIVEN, bug634. [Ted Campbell]
**** Fix module resolution with __, bug631. [Jason McMullan]
**** Fix packed array non-zero right index select crash, bug642. [Krzysztof Jankowski]
**** Fix nested union crash, bug643. [Krzysztof Jankowski]
* Verilator 3.846 2013-03-09
** IEEE 1800-2012 is now the default language. This adds 4 new keywords
and updates the svdpi.h and vpi_user.h header files.
*** Add --report-unoptflat, bug611. [Jeremy Bennett]
*** Add duplicate clock gate optimization, msg980. [Varun Koyyalagunta]
Disabled unless -OD or -O3 used, please try it as may get some
significant speedups.
*** Fix wrong dot resolution under inlining. [Art Stamness]
**** Support pattern assignment features, bug616, bug617, bug618. [Ed Lander]
**** Support bind in $unit, bug602. [Ed Lander]
**** Support <number>'() sized casts, bug628. [Ed Lander]
**** Fix DETECTARRAY on packed structures, bug610. [Jeremy Bennett]
**** Fix LITENDIAN on unpacked structures, bug614. [Wai Sum Mong]
**** Fix 32-bit OS VPI scan issue, bug615. [Jeremy Bennett, Rich Porter]
**** Fix opening a VerilatedVcdC file multiple times, msg1021. [Frederic Requin]
**** Fix UNOPTFLAT circular array bounds crossing, bug630. [Jie Xu]
* Verilator 3.845 2013/02/04
*** Fix nested packed arrays and struct, bug600. [Jeremy Bennett]
Packed arrays are now represented as a single linear vector in
Verilated models. This may affect packed arrays that are public or
accessed via the VPI.
*** Support wires with data types, bug608. [Ed Lander]
*** Support bind, to module names only, bug602. [Ed Lander]
*** Support VPI product info, warning calls, etc, bug588. [Rick Porter]
*** Support $left, $right and related functions, bug448. [Iztok Jeras]
*** Support inside expressions.
*** Define SYSTEMVERILOG, SV_COV_START and other IEEE mandated predefines.
**** Fix pin width mismatch error, bug595. [Alex Solomatnikov]
**** Fix implicit one bit parameter selection, bug603. [Jeremy Bennett]
**** Fix signed/unsigned parameter misconversion, bug606. [Jeremy Bennett]
**** Fix segfault on multidimensional dotted arrays, bug607. [Jie Xu]
**** Fix per-bit array output connection error, bug414. [Jan Egil Ruud]
**** Fix package logic var compile error.
**** Fix enums with X values.