Commit Graph

12 Commits

Author SHA1 Message Date
Yutetsu TAKATSUKASA
8624ce6a84
Stop checking dtype for better optimization chance in BitOpTree (#2909)
* Tests: Add more case that does not match native C++ width (8, 16, 32 or 64).

* Use AstVarRef::same() instead of AstNode::sameGateTree() because the latter checks dtype in addition to scope.

AstVarRef may have different minWidth in some cases,
but the difference should be ignored in the context of bitOpTree optimization.
2021-05-04 10:40:16 +09:00
Wilson Snyder
7469166c38 Fix or-reduction on different scopes broken in 4.110 (#2828). 2021-03-10 18:08:11 -05:00
Yutetsu TAKATSUKASA
bb5384bc50
Optimize bit op tree #2186, #2632, and #2633 (#2751)
* Tests:Add some more signals to t_const_opt_red.v

* Optimize bit op trees such as ~a[2] & a[1] & ~a[0] to 3'b010 == (3'111 & a)

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Apply clang-format

* Don't edit and-or tree.

* Call matchBitOpTree() after V3Expand does its job.

* Internals: Rename newNodep -> newp. No functional change is intended.

* Internals: Remove m_sels. No functional change is intended.

* Internals: Remove stringstream. No functional change is intended.

* Internals: Use V3Number::bitIs1(). No functional change is intended.

* Internals: Use V3Number instead of std::map. Resolved laek. Result should be same.

* Internals: Resolve overload of setPolarity. No functional change is intended.

* Internals: Pass failure reason. No functional change is intended.

* Internals: Add VNUser::toPtr(). No functional change is intended.

* Internals: Use user4 instead of std::map. No functional change is intended.

* Catch up with the AST style aftre V3Expand

* Internals: Rename Context to VarInfo. No functional change is intended.

* Add some more test case

* tests:Add stats to tests
Update stats in t_merge_cond.pl as matchBitopTree does some of them.

* insert CCast if necessary

* small optimization to remove redundant bit mask

* No quick exit even when unoptimizable node is found.

* Simplify removing redundant And

* simplify

* Revert "Internals: Add VNUser::toPtr(). No functional change is intended."

This reverts commit f98dce10db.

* Consider AstWordSel and cleanup

* Update test

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Update src/V3Const.cpp

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>

* Apply clang-format

* Internals: rename variables. No functional change is intended.

Co-authored-by: Wilson Snyder <wsnyder@wsnyder.org>
Co-authored-by: github action <action@example.com>
2021-02-21 18:11:33 +09:00
Tim Snyder
a57262d6e7
Fix use /usr/bin/env perl in lieu of /usr/bin/perl (#2306)
Enables scripts to work where perl is not installed at /usr/bin/perl
2020-05-04 18:42:15 -04:00
Wilson Snyder
1ce360ed5b Add SPDX license identifiers. No functional change. 2020-03-21 11:24:24 -04:00
Wilson Snyder
c29e7619eb Tests: Support multiple scenario testing. 2018-05-07 20:42:28 -04:00
Wilson Snyder
a265417727 Tests: Cleanup Perl indentations. No functional change. 2018-05-06 22:39:18 -04:00
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
8e9a0121ac Update test driver.pl: Allow -j auto determination, make logfile, don't require cd 2008-09-23 10:02:31 -04:00
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
6a6995187e Add --compiler flags, and break up deep functions
git-svn-id: file://localhost/svn/verilator/trunk/verilator@913 77ca24e4-aefa-0310-84f0-b9a241c72d87
2007-04-19 18:20:16 +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