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86 Commits

Author SHA1 Message Date
Martin Povišer 4c96546717 equiv_simple: Take FFs into account for driver map 
This fixes an issue introduced in commit 26644ea due to which flip-flops
are inadvertently ignored when building up driver map. The mentioned
commit wasn't without functional change after all.
 2024-02-21 12:05:52 +01:00
Martin Povišer 1f1f43edd9 equiv_simple: Fix seed handling in non-short mode 2023-10-03 13:05:42 +02:00
Martin Povišer dbf11da50a equiv_simple: Do not special-case flip-flop types in cone expansion 
If there's an asynchronous flip-flop type, it will be caught by not
having a synchronous SAT model later on. Otherwise we can support all
flip-flops.
 2023-10-03 13:05:42 +02:00
Martin Povišer 26644ea779 equiv_simple: Drop hollow conditional 
All the listed flip-flop types would be known cells, so the extra part
of the conditional is without effect.
 2023-10-03 13:05:42 +02:00
Jannis Harder 85f611fb23
Merge pull request #3126 from georgerennie/equiv_make_assertions 
equiv_make: Add -make_assert option
 2023-02-14 17:15:55 +01:00
Claire Xenia Wolf 0516307637 Add "check -assert" to equiv_opt 
Signed-off-by: Claire Xenia Wolf <claire@clairexen.net>
 2022-10-07 16:04:51 +02:00
Claire Xenia Wolf afa5e6bb53 Exclude primary inputs from quiv_make rewiring 
Signed-off-by: Claire Xenia Wolf <claire@clairexen.net>
 2022-10-07 16:04:51 +02:00
Claire Xenia Wolf 381ce66f58 Revert "Merge pull request #641 from tklam/master" 
This reverts commit 08be796cb8, reversing
changes made to 38dbb44fa0.

This fixes #2728. PR #641 did not actually "fix" #639.

The actual issue in #639 is not equiv_make, but assumptions in equiv_simple
that are not true for the test case provided in #639.
 2022-10-07 16:04:51 +02:00
George Rennie fbf5d89587 equiv_make: Add -make_assert option 
This adds a -make_assert flag to equiv_make. When used, the pass generates
$eqx and $assert cells to encode equivalence instead of $equiv.
 2022-06-24 00:17:02 +01:00
Claire Xenia Wolf 72787f52fc Fixing old e-mail addresses and deadnames 
s/((Claire|Xen|Xenia|Clifford)\s+)+(Wolf|Xen)\s+<(claire|clifford)@(symbioticeda.com|clifford.at|yosyshq.com)>/Claire Xenia Wolf <claire@yosyshq.com>/gi;
s/((Nina|Nak|N\.)\s+)+Engelhardt\s+<nak@(symbioticeda.com|yosyshq.com)>/N. Engelhardt <nak@yosyshq.com>/gi;
s/((David)\s+)+Shah\s+<(dave|david)@(symbioticeda.com|yosyshq.com|ds0.me)>/David Shah <dave@ds0.me>/gi;
s/((Miodrag)\s+)+Milanovic\s+<(miodrag|micko)@(symbioticeda.com|yosyshq.com)>/Miodrag Milanovic <micko@yosyshq.com>/gi;
s,https?://www.clifford.at/yosys/,http://yosyshq.net/yosys/,g;
 2021-06-08 00:39:36 +02:00
Marcelina Kościelnicka b7ea71e6e3 equiv: Suggest running async2sync or clk2fflogic where appropriate. 
See #2713.
 2021-03-30 18:20:21 +02:00
N. Engelhardt 3238190797 use the new isPublic() in a few places 2020-09-14 12:43:18 +02:00
Marcelina Kościelnicka a1a0abf52a equiv_induct: Fix up assumption for $equiv cells in -undef mode. 
Before this fix, equiv_induct only assumed that one of the following is
true:

- defined value of A is equal to defined value of B
- A is undefined

This lets through valuations where A is defined, B is undefined, and
the defined (meaningless) value of B happens to match the defined value
of A.  Instead, tighten this up to OR of the following:

- defined value of A is equal to defined value of B, and B is not
  undefined
- A is undefined
 2020-07-27 18:36:13 +02:00
whitequark 7191dd16f9 Use C++11 final/override keywords. 2020-06-18 23:34:52 +00:00
Eddie Hung 956ecd48f7 kernel: big fat patch to use more ID::*, otherwise ID(*) 2020-04-02 09:51:32 -07:00
Eddie Hung fdafb74eb7 kernel: use more ID::* 2020-04-02 07:14:08 -07:00
Marcin Kościelnicki a235250403 xilinx: Add xilinx_dffopt pass (#1557) 2019-12-18 13:43:43 +01:00
Eddie Hung 84f978bdc2 Add -async2sync to help text as per @daveshah1 2019-10-04 10:17:46 -07:00
Eddie Hung a9efd2e81c Restore part of doc 2019-10-03 10:51:53 -07:00
Eddie Hung 7a6dec1cef Add new -async2sync option 2019-10-03 10:30:51 -07:00
Eddie Hung 8765ec3c27 Revert "equiv_opt to call async2sync when not -multiclock like SymbiYosys" 
This reverts commit a39505e329.
 2019-10-03 10:07:15 -07:00
Eddie Hung c6d15c9aad Revert "Update doc for equiv_opt" 
This reverts commit a274b7cc86.
 2019-10-03 10:07:03 -07:00
Eddie Hung a274b7cc86 Update doc for equiv_opt 2019-09-30 10:59:56 -07:00
Eddie Hung a39505e329 equiv_opt to call async2sync when not -multiclock like SymbiYosys 2019-09-27 12:59:10 -07:00
David Shah c43e52d2d7 Add equiv_opt -multiclock 
Signed-off-by: David Shah <dave@ds0.me>
 2019-09-11 13:55:59 +01:00
Eddie Hung c50d68653d Spelling 2019-08-22 16:06:36 -07:00
Eddie Hung 6d77236f38 substr() -> compare() 2019-08-07 12:20:08 -07:00
Eddie Hung 48d0f99406 stoi -> atoi 2019-08-07 11:09:17 -07:00
Eddie Hung c11ad24fd7 Use std::stoi instead of atoi(<str>.c_str()) 2019-08-06 16:45:48 -07:00
Eddie Hung 159e7cc298 Add -undef option to equiv_opt, passed to equiv_induct 2019-04-26 11:16:48 -07:00
Clifford Wolf f3ad8d680a Add "techmap -wb", use in formal flows 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 11:23:24 +02:00
Clifford Wolf f53e19cc71 Fix equiv_opt indenting 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-12-16 15:57:28 +01:00
whitequark 7ff5a9db2d equiv_opt: pass -D EQUIV when techmapping. 
This allows avoiding techmap crashes e.g. because of large memories
in white-box cell models.
 2018-12-07 17:20:34 +00:00
whitequark c38ea9ae65 equiv_opt: new command, for verifying optimization passes. 2018-12-07 17:20:34 +00:00
rafaeltp f8b97e21f3 using [i] to access individual bits of SigSpec and merging bits into a tmp Sig before setting the port to new signal 2018-10-21 11:32:44 -07:00
rafaeltp 7b964bfb83 cleaning up for PR 2018-10-20 18:02:59 -07:00
rafaeltp ce069830c5 fixing code style 2018-10-20 17:57:26 -07:00
rafaeltp 0ad4321781 solves #675 2018-10-20 17:50:21 -07:00
tklam f4343b3dc7 stop check_signal_in_fanout from traversing FFs 2018-10-13 23:24:24 +08:00
tklam 302edf0429 stop check_signal_in_fanout from traversing FFs 2018-10-13 23:11:19 +08:00
tklam b86eb3deef fix bug: pass by reference 2018-09-26 17:57:39 +08:00
TK Lam 2b89074240 Fix issue #639 2018-09-26 16:11:45 +08:00
Henner Zeller 3aa4484a3c Consistent use of 'override' for virtual methods in derived classes. 
o Not all derived methods were marked 'override', but it is a great
  feature of C++11 that we should make use of.
o While at it: touched header files got a -*- c++ -*- for emacs to
  provide support for that language.
o use YS_OVERRIDE for all override keywords (though we should probably
  use the plain keyword going forward now that C++11 is established)
 2018-07-20 23:51:06 -07:00
Clifford Wolf 9337e4999d Improve log messages in equiv_make 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-01-19 16:20:40 +01:00
Clifford Wolf 3bbac5c141 Fix equiv_simple, old behavior now available with "equiv_simple -short" 2017-04-28 18:57:53 +02:00
Larry Doolittle 2021ddecb3 Squelch trailing whitespace 2017-04-12 15:11:09 +02:00
Clifford Wolf fe29869ec5 Add $ff and $_FF_ support to equiv_simple 2017-01-30 10:50:38 +01:00
Clifford Wolf ac7a175a3c Improved equiv_purge log output 2016-11-29 13:30:35 +01:00
Clifford Wolf 0bc95f1e04 Added "yosys -D" feature 2016-04-21 23:28:37 +02:00
Clifford Wolf 8b3f8cd220 Added "equiv_struct -fwonly" 2016-01-08 10:59:16 +01:00