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74 Commits

Author SHA1 Message Date
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
Clifford Wolf f5008f4f8a Bugfixes in equiv_struct 2016-01-08 09:57:28 +01:00
Clifford Wolf c3fd03d722 Added "equiv_struct -maxiter <N>" 2016-01-06 13:54:54 +01:00
Clifford Wolf 1f8c47fb47 Added "equiv_add -try" mode 2016-01-06 13:54:00 +01:00
Clifford Wolf 0c202a2549 Use mfp<> in equiv_mark 2015-10-27 19:15:35 +01:00
Clifford Wolf 27714acd8a Improvements in equiv_struct 2015-10-25 22:04:20 +01:00
Clifford Wolf d014ba2d0e Major refactoring of equiv_struct 2015-10-25 19:31:29 +01:00
Clifford Wolf 207736b4ee Import more std:: stuff into Yosys namespace 2015-10-25 19:30:49 +01:00
Clifford Wolf da923c198e Added "equiv_add -cell" 2015-10-25 14:35:40 +01:00
Clifford Wolf 83bd27bf6e equiv_struct now creates equiv_merged attributes 2015-10-25 02:15:20 +02:00
Clifford Wolf 453736d918 Improvements in equiv_struct 2015-10-24 23:04:17 +02:00
Clifford Wolf 7f110e7018 renamed SigSpec::to_single_sigbit() to SigSpec::as_bit(), added is_bit() 2015-10-24 22:56:40 +02:00
Clifford Wolf 6fe48cf41e equiv_purge bugfix, using SigChunk in Yosys namespace 2015-10-24 19:09:45 +02:00