Commit Graph

140 Commits

Author SHA1 Message Date
Geza Lore 95145038b4 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 14:05:27 +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 af305bf280 Merge branch 'master' into develop-v5 2022-09-16 16:24:36 +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
Krzysztof Bieganski 39af5d020e
Timing support (#3363)
Adds timing support to Verilator. It makes it possible to use delays,
event controls within processes (not just at the start), wait
statements, and forks.

Building a design with those constructs requires a compiler that
supports C++20 coroutines (GCC 10, Clang 5).

The basic idea is to have processes and tasks with delays/event controls
implemented as C++20 coroutines. This allows us to suspend and resume
them at any time.

There are five main runtime classes responsible for managing suspended
coroutines:
* `VlCoroutineHandle`, a wrapper over C++20's `std::coroutine_handle`
  with move semantics and automatic cleanup.
* `VlDelayScheduler`, for coroutines suspended by delays. It resumes
  them at a proper simulation time.
* `VlTriggerScheduler`, for coroutines suspended by event controls. It
  resumes them if its corresponding trigger was set.
* `VlForkSync`, used for syncing `fork..join` and `fork..join_any`
  blocks.
* `VlCoroutine`, the return type of all verilated coroutines. It allows
  for suspending a stack of coroutines (normally, C++ coroutines are
  stackless).

There is a new visitor in `V3Timing.cpp` which:
  * scales delays according to the timescale,
  * simplifies intra-assignment timing controls and net delays into
    regular timing controls and assignments,
  * simplifies wait statements into loops with event controls,
  * marks processes and tasks with timing controls in them as
    suspendable,
  * creates delay, trigger scheduler, and fork sync variables,
  * transforms timing controls and fork joins into C++ awaits

There are new functions in `V3SchedTiming.cpp` (used by `V3Sched.cpp`)
that integrate static scheduling with timing. This involves providing
external domains for variables, so that the necessary combinational
logic gets triggered after coroutine resumption, as well as statements
that need to be injected into the design eval function to perform this
resumption at the correct time.

There is also a function that transforms forked processes into separate
functions.

See the comments in `verilated_timing.h`, `verilated_timing.cpp`,
`V3Timing.cpp`, and `V3SchedTiming.cpp`, as well as the internals
documentation for more details.

Signed-off-by: Krzysztof Bieganski <kbieganski@antmicro.com>
2022-08-22 13:26:32 +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
HungMingWu 880a9be3b1
Internal: Add C++20ish reverse_view for range loops. No functional change (#3388).
Signed-off-by: HungMingWu <u9089000@gmail.com>
2022-04-18 13:03:56 -04:00
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 b7ad1e6d61 Internals: Rename some non-nodes to avoid Ast prefix. No functional change. 2022-01-02 10:37:20 -05:00
Wilson Snyder ca42be982c Copyright year update. 2022-01-01 08:26:40 -05:00
Wilson Snyder fd45be3def Internals: Fix class dump 2021-12-22 20:06:14 -05:00
Wilson Snyder 984ee624ed Fix break under foreach loop (#3230).
Internals: Move Foreach handling into V3Width.
2021-12-11 15:06:33 -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 37e3c6da70 Internals: Add more const. No functional change intended. 2021-11-13 13:50:44 -05:00
Geza Lore dae9fa5053 Use VN_AS wherever possible and obvious. No functional change. 2021-10-22 14:06:00 +01:00
Wilson Snyder 8ecdc85cf7 Internals: C++11 style cleanups. No functional change. 2021-07-11 18:42:01 -04:00
Wilson Snyder 512fe0a2d1 Internals: Add const. No functional change. 2021-06-20 18:33:13 -04:00
Wilson Snyder 404b323f8c Internals: Remove some unnecessary typedefs. No functional change. 2021-03-12 17:26:53 -05:00
Wilson Snyder bd602d0e2d Copyright year update 2021-01-01 10:29:54 -05:00
Wilson Snyder b6ded59c2b Internals: Use and enforce class final for ~5% performance boost. 2020-11-18 21:32:16 -05:00
Wilson Snyder 1b0a48ea02 Internals: Use C++11 = default where obvious. No functional change intended. 2020-11-16 19:56:16 -05:00
Wilson Snyder 1899a875a4 Internals: Create VAccess class. No functional change intended. 2020-09-07 17:09:25 -04:00
Wilson Snyder bed3101dfc Internals: Use VL_RESTORER class to save/restore vars. No functional change intended. 2020-08-24 21:13:28 -04:00
Wilson Snyder ee9d6dd63f C++11: Favor auto, range for. No functional change intended. 2020-08-16 11:44:06 -04:00
Wilson Snyder 72d2cff0a1 C++11: Use member declaration initalizations. No functional change intended. 2020-08-16 11:44:06 -04:00
Wilson Snyder 042d3eed23 C++11: Use override where possible. No functional change. 2020-08-16 11:44:05 -04:00
Wilson Snyder c0127599df C++11: Use nullptr. No functional change. 2020-08-16 11:44:05 -04:00
Wilson Snyder 7c54a451a9 C++11: Remove pre-c11 VL_OVERRIDE etc. No functional change. 2020-08-16 11:44:05 -04:00
Wilson Snyder 748c818ccb Parser: Move 'wait' block unsupported messages down out of parser 2020-06-29 20:39:39 -04:00
Wilson Snyder 6de78d58fa Add new UNSUPPORTED error code to replace most previous Unsupported: messages. 2020-06-09 19:20:16 -04:00
Geza Lore 95534fa5c5
Remove unused headers (#2389) 2020-05-31 20:21:07 +01:00
Wilson Snyder 8998ffc4e5 Support reporting some fork syntax errors. 2020-05-10 15:01:43 -04:00
Wilson Snyder 546ccd56c4 Internals: Enable future JumpGo to non-end. No functional change intended. 2020-05-06 21:33:05 -04:00
Wilson Snyder b6b3482010 Internals: Use typ delay by default 2020-05-05 20:42:19 -04:00
Wilson Snyder 7176aee852 Internals: Parse fork and delays, but then still report unsupported. 2020-04-22 21:31:40 -04:00
Wilson Snyder f3308d236b clang-format remaining sources. No functional change. 2020-04-15 07:58:34 -04:00
Wilson Snyder 19b472cf0b Internals: Cleanup unused nodep in visitors. No functional change intended. 2020-04-04 08:31:14 -04:00
Wilson Snyder 1ce360ed5b Add SPDX license identifiers. No functional change. 2020-03-21 11:24:24 -04:00
Yutetsu TAKATSUKASA fbdf5f2dad Internals: Mark all visit() with VL_OVERRIDE. Closes #2132.
* Add VL_OVERRIDE macro so that compiler can tell my typo when trying to override a function.

* Mark visit() with VL_OVERRIDE. No functional change intended.
2020-01-21 17:35:56 -05:00
Wilson Snyder e8ff191a17 Internals: Prepare for hierarchical NodeModule's. No functional change intended. 2020-01-20 13:27:27 -05:00
Wilson Snyder 623c4ec103 Internals: Create VL_DO_DANGLING. No functional change intended. 2020-01-16 20:17:11 -05:00
Wilson Snyder f23fe8fd84 Update copyright year. 2020-01-06 18:05:53 -05:00
Wilson Snyder 5811ec07e6 Update URLs to https://verilator.org 2019-11-07 22:33:59 -05:00
Wilson Snyder 771a301f66 Commentary: Remove newlines, upsets some patches. No functional change. 2019-10-04 20:17:11 -04:00
Wilson Snyder e556269692 Commentary - Spelling fixes 2019-09-12 07:22:22 -04:00
Wilson Snyder fa904f386c Commentary - Spelling fixes 2019-09-09 07:50:21 -04:00
Wilson Snyder 0f857ce423 In errors, single quote signals and other from-user data. 2019-07-11 22:09:30 -04:00
Wilson Snyder 8548ecfdac Internals: Add UASSERT_OBJ macro to replace hand-done ifs. No functional change intended.
This makes it easier to filter out correctly zero code-coverage lines.
2019-07-06 12:57:50 -04:00
Wilson Snyder c0be8bcefb Internals: Remove some pointless V3Number temporaries. No functional change intended. 2019-05-29 23:18:47 -04:00
Wilson Snyder b83b606267 Internals: Detab and fix spacing style issues. No functional change.
When diff, recommend using "git diff --ignore-all-space"
When merging, recommend using "git merge -Xignore-all-space"
2019-05-19 16:13:13 -04:00
Todd Strader eac3458647 Internals: V3Number tracks node information, part of bug1305.
Signed-off-by: Wilson Snyder <wsnyder@wsnyder.org>
2019-05-09 20:03:19 -04:00
Wilson Snyder 8a4aeddbb0 Copyright year update. 2019-01-03 19:17:22 -05:00
Wilson Snyder d87b9d25ca Internals: Cleanup and standardize include order. No functional change intended. 2018-10-14 13:59:40 -04:00
Wilson Snyder 595419b370 Internals: Sort includes for clang-tidy. No functional change intended. 2018-10-14 07:04:18 -04:00
Wilson Snyder cd4e6b35b3 Internals: Standardize debug() function generation. No functional change intended. 2018-05-14 06:50:47 -04:00
Wilson Snyder 05db8ce6c8 Internals: Move iterators to AstNVisitor to avoid null this. 2018-05-10 20:55:37 -04:00
Wilson Snyder 2c30aecc5b Merge from master 2018-03-10 16:51:34 -05:00
Wilson Snyder 54a101acbe Internals: Fix -DLEAK_CHECKS failing due to visitor destructor being too late. 2018-03-10 12:57:50 -05:00
Wilson Snyder 597d28b505 Fix internals to make null-pointer-check clean. Also add more const's. No functional change intended, but likely something will break. 2018-02-01 21:32:58 -05:00
Wilson Snyder 94e8cf1de9 Internals: Use explicit std:: instead of using namespace std. No functional change intended. 2018-02-01 21:24:41 -05:00
Wilson Snyder 8e65d93d6d Copyright year update. No functional change. 2018-01-02 18:05:06 -05:00
Wilson Snyder 63361fc56e Add performance information to --stats file. 2017-09-17 22:52:57 -04:00
Wilson Snyder e6d7e7e329 Version bump 2017-01-15 12:13:13 -05:00
Wilson Snyder 7efa40966a Internals: Remove second argument to visitors. No functional change intended. 2016-11-27 08:11:38 -05:00
Wilson Snyder b738d1960a Copyright year update 2016-01-06 20:36:41 -05:00
Wilson Snyder 4fc9a906f6 Internals: Fix cppcheck warnings; add VL_DANGLING. No functional change. 2015-10-04 13:16:35 -04:00
Wilson Snyder 318ded4198 Internals: Cleanup cppcheck warnings. 2015-10-03 22:33:06 -04:00
Wilson Snyder 0ee5743853 Add --dump-treei-<srcfile>, bug894. 2015-03-12 19:48:04 -04:00
Wilson Snyder 4c91ade61d Copyright year update 2015-01-07 18:25:53 -05:00
Wilson Snyder 4422de0c6c Copyright year update. 2014-01-06 19:28:57 -05:00
Wilson Snyder 464679c78b Fix module resolution with __, bug631. 2013-03-12 07:27:17 -04:00
Wilson Snyder a8bbf7231b Copyright year update. 2013-01-01 09:42:59 -05:00
Wilson Snyder 8b9b7178a2 Internals: MAJOR CHANGE. Combine V3Link and V3LinkDot stages for structures.
Functionality should be similar, but may introduce instability in resolving variables/cells.
Final merge from dot.
2012-07-21 17:12:42 -04:00
Wilson Snyder c6e7d87960 Commentary - Remove author lines as amany contributors now 2012-05-24 19:19:48 -04:00
Wilson Snyder 942cb5e87e Internals: Make findDtype functions use this. No functional change. 2012-05-09 22:12:57 -04:00
Wilson Snyder 87e8736823 IMPORTANT: Major internal changes for supporting complex data types.
Adds dtype() to every node, keep global table of dtypes and remove duplicates.
Final merge from dtype branch.
2012-04-29 10:14:13 -04:00
Wilson Snyder 50edef4ab2 Add Emacs indentation line. No functional change 2012-04-12 21:08:20 -04:00
Wilson Snyder 61cbdd1a19 Internals: Merge VFlag rename. No functional change. 2012-03-31 11:10:34 -04:00
Wilson Snyder 37839e2709 Cleanup trailing whitespace. No functional change 2012-03-20 16:01:53 -04:00
Wilson Snyder 8f40d6617e For generated variables, opt towards 2-state so zero init 2012-01-26 08:29:55 -05:00
Wilson Snyder c2c7c7bd9a Copyright year update 2012-01-15 10:26:28 -05:00
Wilson Snyder 29e24818a1 Internals: Rename and cleanup some width() usages. No functional change. 2011-11-30 18:50:21 -05:00
Wilson Snyder 3b6da93331 Reuse goto labels inside functions, bug420a 2011-11-10 19:13:32 -05:00
Wilson Snyder 1a15d41523 Support jumps in program modules 2011-10-27 19:13:24 -04:00
Wilson Snyder 55906486d8 Support 'real' numbers and related functions. 2011-07-24 15:01:51 -04:00
Wilson Snyder 8137f41fc3 Support disable for loop escapes. 2011-06-28 21:26:49 -04:00
Wilson Snyder 0ab739e8b1 Fix false BLKSEQ on non-unrolled for loop indexes. 2011-01-06 06:46:19 -05:00
Wilson Snyder 71c1f00ec2 Copyright year update 2011-01-01 18:21:19 -05:00
Wilson Snyder cdd06e7236 Support "break", "continue", "return". 2010-02-14 10:01:21 -05:00