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Author SHA1 Message Date
Geza Lore 603f4c615a
Improve Loop unrolling (#6480) (#6493) 
This patch implements #6480. All loop statements are represented using
AstLoop and AstLoopTest.

This necessitates rework of the loop unroller to handle loops of
arbitrary form. To enable this, I have split the old unroller used for
'generate for' statements and moved it into V3Param, and subsequently
rewrote V3Unroll to handle the new representation. V3Unroll can now
unroll more complex loops, including with loop conditions containing
multiple variable references or inlined functions.

Handling the more generic code also requires some restrictions. If a
loop contains any of the following, it cannot be unrolled:
- A timing control that might suspend the loop
- A non-inlined call to a non-pure function

These constructs can change the values of variables in the loop, so are
generally not safe to unroll if they are present. (We could still unroll
if all the variables needed for unrolling are automatic, however we
don't do that right now.)

These restrictions seem ok in the benchmark suite, where the new
unroller can generally unroll many more loops than before.
 2025-09-29 15:25:25 +01:00
Geza Lore 800af37975
Internals: Refactor generate construct Ast handling (#6280) (#6470) 
Internals: Refactor generate construct Ast handling (#6280)

We introduce AstNodeGen, the common base class of AstGenBlock,
AstGenCase, AstGenFor, and AstGenIf, which together represent all SV
generate constructs. Subsequently remove AstNodeFor, AstNodeCase
(AstCase is now directly derived from AstNodeStmt) and adjust internals
to work on the new representation.

Output is identical modulo hashes do to changed AstNode type ids, no
functional change intended.

Step towards #6280.
 2025-09-23 19:49:01 +01:00
Wilson Snyder 8fbb725f34 Copyright year update. 2025-01-01 08:30:25 -05:00
Bartłomiej Chmiel ffe76717c6
Thread pool rewrite (#5161) 
Signed-off-by: Krzysztof Bieganski <kbieganski@antmicro.com>
Signed-off-by: Bartłomiej Chmiel <bchmiel@antmicro.com>
Signed-off-by: Arkadiusz Kozdra <akozdra@antmicro.com>
Co-authored-by: Krzysztof Bieganski <kbieganski@antmicro.com>
Co-authored-by: Arkadiusz Kozdra <akozdra@antmicro.com>
Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>
 2024-08-23 08:36:49 -04:00
Wilson Snyder e76f29e5ba Copyright year update 2024-01-01 03:19:59 -05:00
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 b24d7c83d3 Copyright year update 2023-01-01 10:18:39 -05:00
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 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 be31fdcfe4 Use Google-style-guide header guard naming, to avoid __ prefix. 2021-03-03 21:57:07 -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 aef2b7ea3c Internals: clang-format cleanup. No functional change. 2020-04-02 08:25:44 -04:00
Wilson Snyder 1ce360ed5b Add SPDX license identifiers. No functional change. 2020-03-21 11:24:24 -04:00
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 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
Wilson Snyder aaf5b7c2c0 Fix uninitialized data in unroller, bug1386. [Al Grant] 2019-01-06 16:56:56 -05:00
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 22573d238b Internals: Fix GCC8 cppcheck warnings. No functional change. 2018-02-07 20:16:53 -05:00
Wilson Snyder 8e65d93d6d Copyright year update. No functional change. 2018-01-02 18:05:06 -05:00
Wilson Snyder e6d7e7e329 Version bump 2017-01-15 12:13:13 -05:00
Wilson Snyder b738d1960a Copyright year update 2016-01-06 20:36:41 -05:00
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 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 50edef4ab2 Add Emacs indentation line. No functional change 2012-04-12 21:08:20 -04:00
Wilson Snyder c2c7c7bd9a Copyright year update 2012-01-15 10:26:28 -05:00
Wilson Snyder 71c1f00ec2 Copyright year update 2011-01-01 18:21:19 -05:00
Wilson Snyder 729dfdfed7 Copyright year update 2010-01-05 21:15:06 -05:00
Wilson Snyder 7df730cedd Verilator is now licensed under LGPL v3 and/or Artistic v2.0. 2009-05-04 17:07:57 -04:00
Wilson Snyder 3d06720628 Copyright year update 2009-01-02 11:47:39 -05:00
Wilson Snyder 52912c6329 Convert repository to git from svn. 
- Change .cvsignore to .gitignore
- Remove Id metacomments
- Cleanup whitespace at end of lines
 2008-06-09 21:25:10 -04:00
Wilson Snyder 8e812058cb Change website references to veripool.org 
git-svn-id: file://localhost/svn/verilator/trunk/verilator@1039 77ca24e4-aefa-0310-84f0-b9a241c72d87
 2008-04-25 12:14:27 +00:00
Wilson Snyder a2ffe86a36 Copyright update 
git-svn-id: file://localhost/svn/verilator/trunk/verilator@976 77ca24e4-aefa-0310-84f0-b9a241c72d87
 2008-01-15 14:29:08 +00:00
Wilson Snyder b5b1d94d4a Copyright date update 
git-svn-id: file://localhost/svn/verilator/trunk/verilator@864 77ca24e4-aefa-0310-84f0-b9a241c72d87
 2007-01-02 22:06:40 +00:00
Wilson Snyder 3b554f4c5b Rename config.h to config_build.h, and add cross compile notes. 
git-svn-id: file://localhost/svn/verilator/trunk/verilator@842 77ca24e4-aefa-0310-84f0-b9a241c72d87
 2006-12-18 19:20:45 +00:00
Wilson Snyder ce10dbd11c Version bump 
git-svn-id: file://localhost/svn/verilator/trunk/verilator@753 77ca24e4-aefa-0310-84f0-b9a241c72d87
 2006-08-26 11:35:28 +00:00