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5387 Commits

Author SHA1 Message Date
Akash Levy 241852eebd Test merge from upstream 2026-02-04 02:07:01 -08:00
Akash Levy af7e124c26
Merge pull request #101 from Silimate/yosys_abc_test1 
Small abc update to see what happens
 2026-02-04 01:45:56 -08:00
Akash Levy dd08ba75bc
Merge pull request #100 from Silimate/negopt-pass-pr 
Add negopt pass with comprehensive pattern matching
 2026-02-04 01:44:45 -08:00
Akash Levy 715e062bcd Merge branch 'main' into negopt-pass-pr 2026-02-04 00:15:53 -08:00
Akash Levy 33bcfe26dd Merge branch 'main' into sim 2026-02-03 23:57:24 -08:00
Akash Levy 23ed2ef523 Small abc update to see what happens 2026-02-03 23:55:25 -08:00
Akash Levy 807df40422 Undo the weird abc changes 2026-02-03 23:21:48 -08:00
Robert O'Callahan 7326bb7d66
Only reuse ABC processes if we're using yosys-abc and it was built with ENABLE_READLINE 
(cherry picked from commit 5054fd17d7b70f2df97360bb0f0cc1c92a6ffe72)
 2026-02-04 17:19:10 +13:00
tondapusili 643427d9c9 Add negopt pass with comprehensive pattern matching 
This commit introduces the negopt pass with pre/post optimization modes
for handling negation patterns in arithmetic circuits.

Pre-optimization patterns (expose for tree balancing):
- manual2sub: (a + ~b) + 1 → a - b
- sub2neg: a - b → a + (-b)
- negexpand: -(a + b) → (-a) + (-b) [with output width fix]
- negneg: -(-a) → a
- negmux: -(s ? a : b) → s ? (-a) : (-b)

Post-optimization patterns (cleanup/rebuild):
- negrebuild: (-a) + (-b) → -(a + b)
- muxneg: s ? (-a) : (-b) → -(s ? a : b)
- neg2sub: a + (-b) → a - b

All patterns use nusers() for fanout checking (standard Yosys style).
Comprehensive test coverage with positive/negative cases and formal
verification via equiv_opt.
 2026-02-03 17:21:21 -08:00
Stan Lee bea2a7d473 add few debug 2026-02-03 14:40:33 -08:00
Stan Lee ce959ec1bb fixes 2026-02-03 12:42:33 -08:00
Stan Lee 6620d098d4 lower verbosity 2026-02-03 12:05:14 -08:00
Akash Levy 8e5d24aa6b Bump yosys to latest 2026-02-03 06:08:36 -08:00
KrystalDelusion 414b1b6019
Merge pull request #5651 from rocallahan/abc-error-nonfatal 
Handle ABC nonfatal "Error:" messages
 2026-02-03 08:55:05 +13:00
Akash Levy bdc9ad9f53 Bump version 2026-01-30 19:29:00 -08:00
Miodrag Milanović ac427a79b0
Merge pull request #5644 from nataliakokoromyti/upstream-linux-perf-unistd 
Add unistd header for Linux
 2026-01-30 08:17:43 +01:00
Robert O'Callahan 9c56c93632 Add missing newlines to some 'log_error's 2026-01-30 01:52:19 +00:00
Robert O'Callahan 6af1b5b19c Don't treat ABC 'Error:' output as indicating a fatal error, since these messages aren't necessarily fatal 2026-01-30 01:52:19 +00:00
Akash Levy a9cf998f9f Merge from upstream 2026-01-29 17:46:44 -08:00
Emil J a68fee1115
Merge pull request #5646 from rocallahan/debug-design_equal 
Dump module details when `design_equal` fails
 2026-01-29 18:57:24 +01:00
Akash Levy 1dd846022b Fix opt_dff cell naming 2026-01-28 23:36:49 -08:00
Akash Levy 9f911e3d63 Reorder ff.remove in opt_dff 2026-01-28 20:58:01 -08:00
Akash Levy 4e937450b4
Merge pull request #97 from Silimate/reg-rename 
Bug fix for reg_rename pass
 2026-01-28 19:08:26 -08:00
Akash Levy 16087ae931 Merge from upstream 2026-01-28 18:17:50 -08:00
Stan Lee c0a1529eb8 reduce verbosity 2026-01-28 18:05:21 -08:00
Akash Levy e8d27892f0
Merge pull request #96 from Silimate/fanoutbuf_src_attr 
Changed fanoutbuf.cc to include src attributes on buffers connected t…
 2026-01-28 17:50:46 -08:00
Stan Lee 04faedd131 syntax err 2026-01-28 17:40:57 -08:00
Stan Lee dfef18010d shorter lines 2026-01-28 17:20:19 -08:00
Stan Lee 932c4452b5 better working implementation 2026-01-28 17:00:46 -08:00
AdvaySingh1 3ce57442de Changed fanoutbuf.cc to include src attributes on buffers connected to input and output wires 2026-01-28 15:33:13 -08:00
Robert O'Callahan 139c38ecfa Dump module details when design_equal fails 2026-01-28 18:32:12 +00:00
nella 8f6c4d40e4
Merge pull request #5623 from YosysHQ/nella/opt-dff-rewrite 
opt_dff restructure.
 2026-01-28 14:41:40 +01:00
Natalia 6a6e5f0f54 linux_perf: only include unistd on Linux 2026-01-28 03:44:33 -08:00
Natalia fc2b7c317f linux_perf: include unistd for POSIX I/O 2026-01-28 03:14:20 -08:00
Emil J 75008b70e5
Merge pull request #5638 from YosysHQ/emil/linux_perf-fix-help 
linux_perf: mark internal, fix help formatting
 2026-01-28 11:06:08 +01:00
Krystine Sherwin 8ed7ac04d8
linux_perf.cc: Fix overlength codeblock 2026-01-28 08:17:56 +13:00
Krystine Sherwin 4031310ebb
linux_perf.cc: Use formatted_help 
Gets the codeblock formatting better.

Also fold the on|off into a single usage.
 2026-01-28 08:10:31 +13:00
Akash Levy b356c9ac3e Add unistd header for Linux 2026-01-26 23:12:02 -08:00
Akash Levy 26f5ff3d74 Merge from upstream 2026-01-26 22:16:11 -08:00
Gus Smith 09ceadfde7
Merge pull request #4269 from povik/icells_not_derived 
Avoid `module_not_derived` on internal cells in techmap result
 2026-01-26 14:48:40 -08:00
Emil J. Tywoniak ef3b2b0380 linux_perf: mark internal, fix help formatting 2026-01-26 22:59:20 +01:00
nella 9367090763 OptDff more accurate ctrl/pattern desc. 2026-01-26 22:19:36 +01:00
nella 5803461c24 opt_dff pattern extraction. 2026-01-26 22:10:10 +01:00
Emil J 29a9e42b64
Merge pull request #5628 from rocallahan/linux-perf-ctl 
Add `linux_perf` command to turn Linux perf recording on and off.
 2026-01-26 19:32:55 +01:00
nella 8576055dea Fix tests. 2026-01-26 18:41:41 +01:00
Emil J 673c8d1ae7
Merge pull request #5615 from rocallahan/remove-used-signals-updates 
Don't update `used_signals` for retained wires in `rmunused_module_signals`.
 2026-01-26 15:47:25 +01:00
nella a75e0b2e92 opt_dff minor cleanup, added tests for comp var. 2026-01-26 14:24:01 +01:00
Robert O'Callahan 32e96605d4 Don't update `used_signals` for retained wires in `rmunused_module_signals`. 
These updates should not be necessary. In fact, if they were necessary, this code
would be buggy, because the results would depend on the order in which wires are traversed:
If wire A is retained, which causes an update to `used_signals`, which then causes wire B
to be retained when it otherwise wouldn't be, then we would get different results depending
on whether A is visited before B.

These updates will also make it difficult to process these wires in parallel.
 2026-01-24 03:41:18 +00:00
Emil J f5ea73eb97
Merge pull request #5557 from nataliakokoromyti/lut2mux-word 
lut2mux: add -word option
 2026-01-23 17:24:41 +01:00
nella 0e4282d442 Add more opt_dff documentation. 2026-01-23 09:17:14 +01:00