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72 Commits

Author SHA1 Message Date
Matthew Ballance 07f959d31d Refactoring node locations and enums ; Delete coverpoints after V3Covergroup so they don't accidentally hit the generators 
Signed-off-by: Matthew Ballance <matt.ballance@gmail.com>
 2026-04-05 21:10:32 +00:00
Matthew Ballance 20970c7dde Add function coverage (funccov) and covergroup support 
Implement functional coverage collection via covergroups, coverpoints,
and cross coverage bins. Introduces V3CoverageFunctional pass and
verilated_funccov.h runtime support.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
 2026-04-05 21:08:09 +00:00
Geza Lore 77ce9cec1e
Optimize conditional merging across some impure statements (#7159) 
- Allow reordering pure statements with DPI import calls iff no public
  variables (including those read via a DPI export) are involved. This
  ensures the DPI import can't observe the reordering
- Allow reordering of pure statements with AstDisplay and AstStop. This
  requires an assumption that AstDisplay and AstStop will not read or
  write model state other than via a VarRef explicitly present int the
  Ast.
Overall this allows eliminating a lot of conditionals around assertions,
which were previously not possible.
 2026-03-01 05:47:05 -05:00
Wilson Snyder 7c6c6a684b Add SPDX copyright identifiers, and get 'reuse' clean. No functional change. 2026-01-26 20:24:34 -05:00
Wilson Snyder 13327fa9c0 Copyright year update. 2026-01-01 07:22:09 -05:00
Geza Lore 8f13bc0477 Improve conditional merging to preserve branch prediction 2025-10-20 20:01:48 +01:00
Geza Lore 6f69c990fd
Internals: Remove AstCondBound and AstNodeCond (#6293) (#6294) 
Fixes #6293
 2025-08-15 15:49:06 -07:00
Wilson Snyder 6c9cbaef62 Internals: Clean up some constructors. No functional change intended. 2025-07-03 18:59:32 -04:00
Wilson Snyder 46c7b69c64 Internals: UINFO now includes newline itself. No functional change. 2025-05-22 20:29:32 -04:00
Geza Lore 14f618b0f6
Fix invalid code motion over branches (#5811) (#5814) 2025-02-28 13:32:03 -05:00
Wilson Snyder 8fbb725f34 Copyright year update. 2025-01-01 08:30:25 -05:00
Geza Lore 1481d34959 Add candidate item count to MergeCond stats 2024-03-09 22:11:04 +00:00
Wilson Snyder 3a5248a919 Internals: Mark structs final/VL_NOT_FINAL. No functional change intended. 2024-01-20 15:06:46 -05:00
Szymon Gizler 5f52c066e5
Internals: Add serializeOnly() and dumpTreeEitherLevel() (#4815) (#4715). No functional change intended. 2024-01-09 10:35:13 -05:00
Wilson Snyder e76f29e5ba Copyright year update 2024-01-01 03:19:59 -05:00
Wilson Snyder 9fd5634778 Internals: Remove unneeded private's. No functional change 2023-11-13 21:37:45 -05:00
Wilson Snyder f3ae4b8786 Fix spelling 2023-11-10 23:25:53 -05:00
Geza Lore 3c144ada53
Delete AstNode user5 (#4638) 
This saves about 5% memory. V3AstUserAllocator is appropriate for most use
cases, performance is marginally up as we are mostly D-cache bound on
large designs.
 2023-10-29 01:12:27 +01:00
Wilson Snyder b5828a7ce9 Fix header order botched by clang-format in recent commit. 2023-10-18 06:37:46 -04:00
github action 770cd24f27 Apply 'make format' 2023-10-18 02:50:27 +00:00
Wilson Snyder 431bb1ed16
Support compiling Verilator with gcc/clang precompiled headers (#4579) 2023-10-17 22:49:28 -04:00
Mariusz Glebocki 28bd7e5b19
Rework multithreading handling to separate by code units that use/never use it. (#4228) 2023-09-24 22:12:23 -04:00
Wilson Snyder 761adf1cf0 Internals: Add cloneTreePure to prepare for side effect check. 
Use cloneTreePure when what is being cloned must be side-effect free.
Use cloneTree when safe to contain side effects (e.g. cloning module).
 2023-09-16 22:50:54 -04:00
Anthony Donlon cbdee5a804
Fix Windows filename format, etc. (#3873) (#4421) 
* Ignore CLion project files and CMake outputs
* Supporting stripping file path that contains backslash
* Set /bigobj flag and increase stack size for windows platform
* Fix MSVC warnings
 2023-08-16 07:34:57 -04:00
Wilson Snyder add68130b8 Internals: Rename to dumpLevel(), to avoid confusion with make-a-dump() 2023-05-03 18:04:10 -04:00
Wilson Snyder f2aac8c49a Internals: Use VNVisitorConst where possible, for better performance. No functional change indended. 2023-03-18 12:23:17 -04:00
Wilson Snyder b24d7c83d3 Copyright year update 2023-01-01 10:18:39 -05:00
Wilson Snyder c0499da28b Spelling fixes 2022-12-23 11:32:38 -05:00
Larry Doolittle f27cf4c804
Commentary: Fix spelling in C++ comments (#3797) (#3798) 2022-12-02 18:46:38 -05:00
Wilson Snyder 833780fac1 Internal: cppcheck fixes. No functional change intended. 2022-11-27 05:52:40 -05:00
Wilson Snyder 25f970eac2 Internals: Fix constructor style. 2022-11-20 15:06:49 -05:00
Geza Lore 3abb65d732 Strengthen AstNode types to AstNodeExpr 
Declare every AstNode children and variables as AstNodeExpr where we
statically know this is the appropriate sub-type.
 2022-11-20 19:31:28 +00:00
HungMingWu 196f3292d5 Improve V3Ast function usage ergonomics (#3650) 
Signed-off-by: HungMingWu <u9089000@gmail.com>
 2022-10-21 14:12:12 +01:00
Geza Lore 63c694f65f Streamline dump control options 
- Rename `--dump-treei` option to `--dumpi-tree`, which itself is now a
  special case of `--dumpi-<tag>` where tag can be a magic word, or a
  filename
- Control dumping via static `dump*()` functions, analogous to `debug()`
- Make dumping independent of the value of `debug()` (so dumping always
  works even without the debug flag)
- Add separate `--dumpi-graph` for dumping V3Graphs, which is again a
  special case of `--dumpi-<tag>`
- Alias `--dump-<tag>` to `--dumpi-<tag> 3` as before
 2022-09-22 17:24:41 +01:00
Geza Lore ce03293128 Generate AstNode accessors via astgen 
Introduce the @astgen directives parsed by astgen, currently used for
the generation child node (operand) accessors. Please see the updated
internal documentation for details.
 2022-09-21 13:56:03 +01:00
Geza Lore 0c70a0dcbf Remove redundant 'virtual' keywords from overridden methods 
'virtual' is redundant when 'override' is present, so keep only
'override'.

Add t/t_dist_cppstyle.pl to check for this.
 2022-09-16 15:19:38 +01:00
Geza Lore 96a4b3e5a5 Update clang-format config and apply 
- Regroup and sort #include directives (like we used to, but automatic)
- Set AlwaysBreakTemplateDeclarations to true
 2022-08-05 12:00:24 +01:00
Wilson Snyder b9d7819faa Internals: Fix some cppcheck issues. Some dump functions fixed. 2022-07-30 10:01:39 -04:00
Geza Lore 574dbfded1 V3MergeCond: Fix incorrect merge of assignments to the condition 2022-07-28 15:50:02 +01:00
Geza Lore 0c2c097377 Add -fno-merge-cond-motion option 
This disables code motion during V3MergeCond, for debugging.
 2022-06-13 14:16:11 +01:00
Geza Lore 0722f47539
Improve V3MergeCond by reordering statements (#3125) 
V3MergeCond merges consecutive conditional `_ = cond ? _ : _` and
`if (cond) ...` statements. This patch adds an analysis and ordering
phase that moves statements with identical conditions closer to each
other, in order to enable more merging opportunities. This in turn
eliminates a lot of repeated conditionals which reduced dynamic branch
count and branch misprediction rate. Observed 6.5% improvement on
multi-threaded large designs, at the cost of less than 2% increase in
Verilation speed.
 2022-05-27 16:57:51 +01:00
Geza Lore 1a056f6db9 Fix invalid conditional merging when starting at 'c = c ? a : b' 
Fixes #3409.
 2022-05-17 18:36:40 +01:00
Geza Lore b22e368b25 Add default parameters to some Ast nodes for convenience 
Also update usage to utilize. No functional change.
 2022-04-23 14:47:16 +01:00
Wilson Snyder 33105f017c Commentary 2022-03-30 20:17:59 -04:00
Geza Lore 64a6e1ac8b
Add AstNode::foreach method for simple pre-order traversal (#3276) 2022-01-09 22:34:10 +00:00
Wilson Snyder e6857df5c6 Internals: Rename Ast on non-node classes (#3262). No functional change. 
This commit has the following replacements applied:

	s/\bAstUserInUseBase\b/VNUserInUseBase/g;
        s/\bAstAttrType\b/VAttrType/g;
        s/\bAstBasicDTypeKwd\b/VBasicDTypeKwd/g;
        s/\bAstDisplayType\b/VDisplayType/g;
        s/\bAstNDeleter\b/VNDeleter/g;
        s/\bAstNRelinker\b/VNRelinker/g;
        s/\bAstNVisitor\b/VNVisitor/g;
        s/\bAstPragmaType\b/VPragmaType/g;
        s/\bAstType\b/VNType/g;
        s/\bAstUser1InUse\b/VNUser1InUse/g;
        s/\bAstUser2InUse\b/VNUser2InUse/g;
        s/\bAstUser3InUse\b/VNUser3InUse/g;
        s/\bAstUser4InUse\b/VNUser4InUse/g;
        s/\bAstUser5InUse\b/VNUser5InUse/g;
        s/\bAstVarType\b/VVarType/g;
 2022-01-02 14:03:20 -05:00
Wilson Snyder ca42be982c Copyright year update. 2022-01-01 08:26:40 -05:00
Wilson Snyder cd737065f2 Internals: More const. No functional change intended. 2021-11-26 17:55:36 -05:00
Wilson Snyder 2742a8c813 Internals: No need for variable name on immediate visitors. No functional change intended. 2021-11-26 10:52:45 -05:00
Wilson Snyder 05e12ab60e Internals: More const. No functional change intended. 2021-11-26 10:52:45 -05:00