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1015 Commits

Author SHA1 Message Date
Wilson Snyder 0e4a3a92b0 CI: Autoformat markdown files 2026-06-15 17:44:50 -04:00
Wilson Snyder c86816476c Commentary: Changes update 2026-06-15 17:37:49 -04:00
Yilou Wang 709c444df3
Internals: Add AGENTS files to guide AI contributions (#7562) (#7765) 
Fixes #7562.
 2026-06-15 08:42:34 -04:00
Geza Lore 5ab2bf1ec4
Optimize input combinational logic by change detection (#7784) 
When a lot of combinational logic is driven from top level inputs,
work can be wasted evaluating that logic if the top level inputs don't
change.

This change adds an optimization by performing a change detect on the
top level inputs, and evaluate 'ico' logic only if the top level input
actually changed. This especially helps with --hierarchical/--lib-create
which runs the 'ico' of each sub-model in the eval settle loop.

This was observed to yield 40%+ run-time speedup on some partitioned
designs.

The added change detection is cheap, so it is emitted even if the 'ico'
region is small, and is on by default.

The optimization is only sound if the model itself does not write to the
top level inputs (otherwise the 'previous value' variables would be out
of sync, which are not updated by internal writes.). If we can detect a
top level input is written within the design, then for that input, we
fall back on always running the relevant logic. With --vpi we cannot
prove safety statically, so --vpi will disable this optimisation unless
explicitly enabled. (In which case it's the user's responsibility to not
write to top level inputs via the VPI.)
 2026-06-15 05:42:00 +01:00
Wilson Snyder 44bd8a0c14 Commentary: Changes update 2026-06-13 22:07:14 -04:00
Geza Lore df1b1577d9
Deprecate isolate_assignments attribute (#7774) 
As per discussion. Remove the unsound V3SplitAs pass. The
isolate_assignments attribute/directive is now parsed and ignored in the
frontend for compatibility but otherwise have no effect.

Fixes #7144
 2026-06-13 19:40:29 +01:00
Kornel Uriasz 4c92c035e7
Support reduction XOR/AND operations in constraints (#7753) 2026-06-11 09:43:18 -04:00
Adam Kostrzewski 394c9bc9b2
Fix FSM detect unchecked casts and variable redeclaration (#7758) 2026-06-11 08:37:23 -04:00
Shashvat e2e1bfe8dd
Internals: Remove unused V3TSP (#7194) (#7757) 2026-06-10 18:48:38 +01:00
Yilin Li d1319cf81e
Fix dpi export pointers (#7742) (#7751) 
Fixes #7742.
 2026-06-10 09:38:41 -04:00
Wilson Snyder 816ab67826 Commentary: Changes update 2026-06-05 18:36:55 -04:00
Matthew Ballance 2886291eba
Support covergroups, coverpoints, and bins (#784) (#7117) 
Fixes #784.
 2026-06-05 09:35:01 -04:00
Yogish Sekhar 947a08965e
Add hierarchy-aware reporting to `verilator_coverage` (#7657) 2026-06-04 09:32:19 -04:00
Muzaffer Kal 57fa98e52c
Fix TSP variable ordering for mtasks (#5342) (#7610) 
Fixes #5342
 2026-05-30 15:35:12 -04:00
Wilson Snyder 99a24c7f39 Commentary: Changes update 2026-05-30 15:16:41 -04:00
Tracy Narine a2fae5eb4b
Add `+verilator+log+file` (#4505) (#7645) 
Fixes #4505.
 2026-05-27 14:33:19 -04:00
Cookie 8ae0e48103
Fix false MULTIDRIVEN warning on always_ff variables (#7351) (#7621) 2026-05-27 08:34:11 -04:00
Cookie 9460501221
Add NOTREDOP error on reduction and negation operators (#7417) (#7623) (#7624) 2026-05-26 12:20:15 -04:00
Cookie 9e2fedee6f
Fix ALWCOMBORDER on variable ordering (#7350) (#7608) 2026-05-26 06:40:55 -04:00
Yogish Sekhar cf8713aebc
Add `--coverage-per-instance` 2026-05-24 18:08:55 -04:00
Wilson Snyder f0c569ab0d Fix CASEINCOMPLETE to not warn on `unique0 case` (#7647). 
Fixes #7647.
 2026-05-23 20:04:54 -04:00
Wilson Snyder c0dc77c908 Commentary: Changes update 2026-05-22 17:57:11 -04:00
Lucas Amaral 20f4eca646
Support busses with mix of pullup/pulldown (#7632) 2026-05-21 14:45:40 -04:00
Yogish Sekhar f282335600
Support FSM detection in primitive wrappers (#7607) 2026-05-21 13:50:31 -04:00
Benjamin Collier 69b3c5f6d1
Support streaming on queues (#7597) 2026-05-20 19:14:02 -04:00
Wilson Snyder daa4a108de Commentary: Debugging non-determinism 2026-05-19 21:51:12 -04:00
Pawel Klopotek efdc8d1cbf
Fix unique_index method on assoc arrays with values differing from the keys (#7616) 
Signed-off-by: Pawel Klopotek <pklopotek@internships.antmicro.com>
 2026-05-19 09:51:23 -04:00
Yilou Wang 00c9e58006
Fix internal error on consecutive repetition with N > 256 (#7552) (#7603) 2026-05-17 21:54:10 -04:00
Muzaffer Kal 9fe058677b
Support NBAs in initial blocks with delay/event controls (#7566) (#7600) 
Fixes #7566.
 2026-05-17 07:34:29 -04:00
Stuart Morris 67e74c5ce4
Fix interface instance name collision (#7591) (#7593) 
Fixes #7591.

Co-authored-by: Leela Pakanati <41307800+cachanova@users.noreply.github.com>
 2026-05-15 07:52:26 -04:00
Wilson Snyder dff2606c0c Commentary: Changes update 2026-05-14 17:38:11 -04:00
Zubin Jain 4a1f17e75f
Fix force of unpacked arrays (#7579) (#7580) 
Fixes #7579.
 2026-05-14 10:58:16 -04:00
Thomas Brown 1c3ee7ce4c
Support expression coverage on assign statements (#7543) 2026-05-13 13:59:29 -04:00
Yogish Sekhar 8312e9d901
Extend FSM Detect to support 'Wide State Encodings' (#7573) 2026-05-13 06:59:22 -04:00
anonkey 67b21e4c62
Fix segmentation fault when using --trace with --lib-create (#7299) (#7518) 2026-05-12 10:16:47 -04:00
Wilson Snyder 831396f848 Commentary: Changes update 2026-05-12 09:52:18 -04:00
Yu-Sheng Lin 0ebe01a778
Support new FST writer API (#6871) (#6992) 2026-05-12 07:39:43 -04:00
Wilson Snyder d2047e5bad Commentary: Changes update 2026-05-11 19:50:48 -04:00
Cookie cf9334f2c1
Fix error on mixed-initialization (#7352) (#7357) 2026-05-11 18:32:55 -04:00
Yogish Sekhar f67159de30
Extend FSM coverage detection to case-free FSMs - Use - if/else chains (#7561) 2026-05-10 13:12:58 -04:00
Wilson Snyder 303615bb37 Support TERMUX (#7559). [Laurent CHARRIER] 
Fixes #7559.
 2026-05-10 08:20:32 -04:00
Wilson Snyder 2bc294ccad Commentary: Add AI policy (#7215) 2026-05-09 19:23:17 -04:00
Artur Bieniek c69c11b2db
Support procedural continuous assign/deassign (#7493) 2026-05-08 19:01:11 -04:00
Michael Rogenmoser a2874b324a
Tests: Add virtual interface scheduling convergence tests (#7323 test) (#7536) 2026-05-05 19:17:53 -04:00
Miguel 0e423a4b39
Fix `+verilator+seed` to default to 1, and 0 to randomly select (#7325) (#7516) 2026-05-05 12:10:51 -04:00
Wilson Snyder d2ae094d43 Commentary (#7532) (#7533) 2026-05-04 18:01:55 -04:00
Wilson Snyder 9a24b3d7ba Commentary: Changes update 2026-05-04 18:00:37 -04:00
24bit-xjkp 082847a1a2
Fix std::unique_ptr with incomplete type for clang (#7501) (#7526) 
Fixes #7501.
 2026-05-02 12:14:54 -04:00
Igor Zaworski 25d4827bd5
Internals: Four state pre-pull (types) (#7520) 2026-04-30 16:56:15 -04:00
Wilson Snyder 30edb987d2 CI: Add automatic code coverage references 2026-04-29 07:52:43 -04:00