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51 commits

Author SHA1 Message Date
Emil J
7719beb4ae
Merge pull request #5349 from rocallahan/cleanup-hashops 
Reduce hashops verbiage in `OptMergePass`
 2025-09-30 19:34:44 +02:00
Emil J
87c1a868d3
Merge pull request #5384 from rocallahan/simplify-opt-merge-logic 
Move `OptMerge` cell filtering logic to happen while building the cell vector
 2025-09-29 15:03:01 +02:00
Robert O'Callahan
4d209c187d Switch OptMergeWorker cell type switching to use IdString::in() 2025-09-25 03:06:58 +00:00
Robert O'Callahan
1c73011e7e Swap SigSpecs using std::swap with moves 2025-09-25 03:04:17 +00:00
Robert O'Callahan
e9aacd8a05 Move OptMerge cell filtering logic to happen while building the cell vector. 
This code is quite confusing because there are two "is the cell known" filters
applied, one while building the cell vector and one after building the cell
vector, and they're subtly different. I'm preserving the actual behaviour here
but it looks like there is, or was, a bug here.
 2025-09-23 23:26:47 +00:00
Robert O'Callahan
1e5f920dbd Remove .c_str() from parameters to log_debug() 2025-09-23 19:10:33 +12:00
Robert O'Callahan
4fe21dd652 Reduce hashops verbiage in OptMergePass 2025-09-19 03:31:46 +00:00
Robert O'Callahan
d24488d3a5 Instead of using builtin_ff_cell_types() directly, go through a method Cell::is_builtin_ff() 2025-09-17 03:24:19 +00:00
Robert O'Callahan
e0ae7b7af4 Remove .c_str() calls from log()/log_error() 
There are some leftovers, but this is an easy regex-based approach that removes most of them.
 2025-09-11 20:59:37 +00:00
Robert O'Callahan
54a258f854 In hash_cell_inputs, avoid constructing an std::pair (which requires copying the port IdString) 2025-09-04 14:17:08 +02:00
Robert O'Callahan
8c04e5266c Use commutative hashing instead of expensive allocation and sorting 
For one of our large circuits, this improves the `OptMergePass` runtime
from about 150s to about 130s. It's also simpler code.
 2025-08-20 19:35:22 +00:00
Robert O'Callahan
7d0ea0d64f Refactor call to sorted_pmux_in to avoid copying the connection dictionary 2025-08-20 19:35:22 +00:00
Robert O'Callahan
3f2c4f6f83 Remove redundant construction of assign_map. 
We call 'assign_map.set()' below which wipes the `SigMap` and reconstructs it.

This operation is expensive because it scans the whole module. I think it's
better to make heavyweight operations more visible so I'm removing
the less obvious operation.
 2025-08-17 23:34:11 +00:00
Emil J. Tywoniak
1d773b50a4 opt_merge: fix dangling pointers in known_cells when keep attribute is used 2025-03-10 13:14:06 +01:00
Emil J. Tywoniak
176faae7c9 opt_merge: fix trivial binary regression 2025-03-10 13:14:06 +01:00
Emil J. Tywoniak
8903740147 opt_merge: switch to unordered_set 2025-03-10 13:14:06 +01:00
Emil J. Tywoniak
ffc057a89c opt_merge: fix the many collisions case 2025-03-10 13:14:06 +01:00
Emil J. Tywoniak
cbb776c626 opt_merge: avoid hashing strings 2025-03-10 13:14:06 +01:00
Jannis Harder
bfd9cf63db Ignore $scopeinfo in opt_merge 2024-02-06 17:51:29 +01:00
Rasmus Munk Larsen
57a2b4b0cd Explicitly use uint64_t as the type of fingerprint to avoid type mismatch with some compilers. 2023-10-03 15:02:02 -07:00
Rasmus Munk Larsen
8e0308b5e7 Revert changes to celltypes.h. Use dict instead of std::unordered_map and most hash function for uint64_t to hashlib.h to support this. 2023-10-03 14:25:59 -07:00
Rasmus Munk Larsen
bce984fa60 Speed up OptMergePass by 1.7x. 
The main speedup comes from swithing from using a SHA1 hash to std::hash<std::string>. There is no need to use an expensive cryptographic hash for fingerprinting in this context.
 2023-10-02 15:57:18 -07:00
Jannis Harder
ca5b910296 opt_merge: Add -keepdc option required for formal verification 
The `-keepdc` option prevents merging flipflops with dont-care bits in
their initial value, as, in general, this is not a valid transform for
formal verification.

The keepdc option of `opt` is passed along to `opt_merge` now.
 2022-04-01 21:03:20 +02:00
Marcelina Kościelnicka
9cbff3a4a9 opt_merge: Remove and reinsert init when connecting nets. 
Mutating the SigMap by adding a new connection will throw off FfInitVals
index.  Work around this by removing the relevant init values from index
whenever we connect nets, then re-add the new init value.

Should fix #2920.
 2021-08-22 18:34:11 +02:00
Marcelina Kościelnicka
98003430d6 opt_merge: Use FfInitVals. 
Partial #2920 fix.
 2021-08-08 01:19:22 +02:00
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
61a7ec4768 opt_merge: Dedup one more use of FF cell type list. 2020-07-15 06:19:18 +02:00
Marcelina Kościelnicka
77b15dd8e9 opt_merge: use the master FF type list 2020-06-30 20:57:35 +02:00
whitequark
7191dd16f9 Use C++11 final/override keywords. 2020-06-18 23:34:52 +00:00
Marcelina Kościelnicka
516857f3ba [NFCI] Deduplicate builtin FF cell types list 
A few passes included the same list of FF cell types.  Make it a global
const instead.

The zinit pass also seems to include a list like that, but given that
it seems to be completely broken at the time (see #1568 discussion),
I'm going to pretend I didn't see that.
 2020-04-09 18:05:06 +02:00
Eddie Hung
956ecd48f7 kernel: big fat patch to use more ID::*, otherwise ID(*) 2020-04-02 09:51:32 -07:00
Eddie Hung
cdf17c4455 opt_merge: unordered_map -> dict as per @cliffordwolf review 2020-03-16 12:44:33 -07:00
Eddie Hung
9f30d7f843 opt_merge: speedup 2020-03-16 12:43:54 -07:00
Eddie Hung
f5e0a07ad6 Add $_FF_ and $_SR* courtesy of @mwkmwkmwk 2019-12-20 13:00:04 -08:00
Eddie Hung
d038cea3c7 More stringent check for flop cells 2019-12-20 12:32:00 -08:00
Eddie Hung
83d36394f8 opt_merge to discard \init of '$' cells with 'Q' port when merging 2019-12-13 10:26:37 -08:00
Eddie Hung
52355f5185 Use more ID::{A,B,Y,blackbox,whitebox} 2019-08-15 14:50:10 -07:00
Clifford Wolf
6995914f3f Use ID() macro in all of passes/opt/ 
This was obtained by running the following SED command in passes/opt/
and then using "meld foo.cc foo.cc.orig" to manually fix all resulting
compiler errors.

sed -i.orig -r 's/"\\\\([a-zA-Z0-9_]+)"/ID(\1)/g; s/"(\$[a-zA-Z0-9_]+)"/ID(\1)/g;' *.cc

Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-08-11 11:39:46 +02:00
Eddie Hung
6d77236f38 substr() -> compare() 2019-08-07 12:20:08 -07:00
Eddie Hung
3486235338 Make liberal use of IdString.in() 2019-08-06 16:18:18 -07:00
Clifford Wolf
e158ea2097 Add log_debug() framework 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-22 17:25:52 +02:00
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
eb67a7532b Add $allconst and $allseq cell types 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-02-23 13:14:47 +01:00
Salvador E. Tropea
ca23554528 Excluded $_TBUF_ from opt_merge pass 2017-07-03 13:21:20 -03:00
Clifford Wolf
18c030a8c9 Add $tribuf to opt_merge blacklist 2017-06-30 17:44:44 +02:00
Clifford Wolf
180d704568 Disable opt_merge for $anyseq and $anyconst 2017-02-28 22:17:00 +01:00
Clifford Wolf
e6cc67b46f Fix handling of init attributes with strange width 2017-02-09 16:06:58 +01:00
Clifford Wolf
0bc95f1e04 Added "yosys -D" feature 2016-04-21 23:28:37 +02:00
Clifford Wolf
6cafd08ac1 Improved opt_merge support for $pmux cells 2016-03-31 09:58:55 +02:00
Clifford Wolf
e2f6d61c00 Typo fixes in opt_expr and opt_merge 2016-03-31 09:56:56 +02:00