Verilator

==========================

**Major:**

* Support attributes (public, isolate_assignments, etc.) in configuration files.
* Add -match to lint_off to waive warnings. [Philipp Wagner]

**Minor:**

* 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) [Yuri Victorovich]
* 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]

==========================

**Major:**

* Docker images are now available for Verilator releases.

**Minor:**

* Support bounded queues.
* Support non-overlapping 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]
* Fix errors on using string in incorrect format (5240). [John Demme]

==========================

**Major:**

* Support associative arrays (excluding [*] and pattern assignments). (544)
* Support queues (excluding {} notation and pattern assignments). (545)

**Minor:**

* 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]

==========================

**Major:**

* Add --protect-lib. (1490) [Todd Strader]
* Add cmake support. (1363) [Patrick Stewart]

**Minor:**

* 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]

==========================

**Minor:**

* 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)

==========================

**Major:**

* When showing an error, show source code and offer suggestions of replacements.
* When showing an error, show the instance location. (1305) [Todd Strader]

**Minor:**

* Add --rr. (1481) [Todd Strader]
* Change MULTITOP to warning to help linting, see manual.
* Add XSim support to driver.pl. (1493) [Todd Strader]
* Add --dpi-hdr-only. (1491) [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]