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708abe0dd1
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36 Commits

Author SHA1 Message Date
Geza Lore
708abe0dd1 Introduce model interface class, make $root part or Syms () 
This patch implements . Verilator creates a module representing the
SystemVerilog $root scope (V3LinkLevel::wrapTop). Until now, this was
called the "TOP" module, which also acted as the user instantiated model
class. Syms used to hold a pointer to this root module, but hold
instances of any submodule. This patch renames this root scope module
from "TOP" to "$root", and introduces a separate model class which is
now an interface class. As the root module is no longer the user
interface class, it can now be made an instance of Syms, just like any
other submodule. This allows absolute references into the root module to
avoid an additional pointer indirection resulting in a potential speedup
(about 1.5% on OpenTitan). The model class now also contains all non
design specific generated code (e.g.: eval loops, trace config, etc),
which additionally simplifies Verilator internals.

Please see the updated documentation for the model interface changes.
 2021-06-30 16:35:40 +01:00
Geza Lore
c207e98306
Implement a distinct constant pool () 
What previously used to be per module static constants created in
V3Table and V3Prelim are now merged globally within the whole model and
emitted as part of a separate constant pool. Members of the constant
pool are global variables which are declared lazily when used (similar to
loose methods).
 2021-06-13 15:05:55 +01:00
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
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
Todd Strader
28b9db1903 Add AstVFile and AstTextBlock, towards bug1490. 2019-09-27 04:24:38 -04:00
Todd Strader
ec620387af Add --dpi-hdr-only, bug1491. 2019-08-27 21:36:59 -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
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
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
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
eb4a686b14 Internals: Move __Dpi.h writing to EmitCSyms to save a visitor pass 2009-12-08 22:12:59 -05:00
Wilson Snyder
a40fae04ce Support direct programming interface (DPI) "import". 2009-12-03 06:55:29 -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
f23203dc96 Make __Inlines.h file so we can build VL_CONST_W_#X funcs automatically 
git-svn-id: file://localhost/svn/verilator/trunk/verilator@974 77ca24e4-aefa-0310-84f0-b9a241c72d87
 2007-11-30 22:38:21 +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