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Code Activity
10813 commits 122 branches 59 tags 72 MiB
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532 commits

Author SHA1 Message Date
Eddie Hung
b5f38f8342 opt_expr: const_xnor replacement to pad Y with 1'b1 2020-04-24 14:13:45 -07:00
Eddie Hung
83570bc0da opt_expr: more fixes for $xor/$xnor 2020-04-24 11:15:29 -07:00
Eddie Hung
90b71eb84b opt_expr: do not group by X, more fixes 2020-04-23 18:15:07 -07:00
Eddie Hung
e7058593f4 opt_expr: improve single-bit $and/$or/$xor/$xnor cells; gate cells too 2020-04-23 15:57:48 -07:00
Marcelina Kościelnicka
2f8541a92e opt_expr: Fix X and CO outputs for $alu identity-mapping rules. 2020-04-16 11:48:29 +02:00
Marcelina Kościelnicka
85166633bc opt_clean: Add missing assignments to opt.did_something. 2020-04-15 16:20:56 +02:00
Marcelina Kościelnicka
6c16fd760b opt_expr: Add more $alu optimizations. 
Detect the places in the $alu where the carry bit is constant (due to
const A[i] == B[i] ^ BI) and split it into smaller $alu at these points.

Also, make the existing const-carry detection for low bits more generic
(now handles cases where both BI and CI are constant, but not equal to
one another).

Fixes #1912.
 2020-04-14 21:48:13 +02:00
Marcelina Kościelnicka
840bb17089 opt_expr: Optimize multiplications with low 0 bits in operands. 
Fixes #1500.
 2020-04-13 16:52:22 +02:00
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
37f42fe102
Merge pull request #1845 from YosysHQ/eddie/kernel_speedup 
kernel: speedup by using more pass-by-const-ref
 2020-04-02 07:13:33 -07:00
Eddie Hung
c90324662c
Merge pull request #1828 from YosysHQ/eddie/celltypes_speedup 
kernel: share a single CellTypes within a pass
 2020-04-01 14:17:45 -07:00
Eddie Hung
4ae7f3a8ed
Merge pull request #1790 from YosysHQ/eddie/opt_expr_xor 
opt_expr: optimise $xor/$xnor/$_XOR_/$_XNOR_ -s with constant inputs
 2020-04-01 14:17:01 -07:00
Eddie Hung
e79bc45975
Merge pull request #1789 from YosysHQ/eddie/opt_expr_alu 
opt_expr: improve performance on $alu and $sub
 2020-04-01 14:11:09 -07:00
Eddie Hung
4d897975a8 Code review fixes 2020-03-30 08:22:46 -07:00
Eddie Hung
f64d59d824
Apply suggestions from code review 
Co-Authored-By: Alberto Gonzalez <61295559+boqwxp@users.noreply.github.com>
 2020-03-30 08:19:56 -07:00
Eddie Hung
d40f12252b kernel: clear some more ShareWorker state 2020-03-26 15:05:45 -07:00
Eddie Hung
0c0dc4ffc3 opt_expr: fix failing $xnor test 2020-03-20 14:39:08 -07:00
Eddie Hung
af16ca9dd4 opt_expr: fix missing brace 2020-03-20 09:17:53 -07:00
Eddie Hung
01f9aabc2f opt_expr: extend to $xnor and $_XNOR_ 2020-03-19 16:56:39 -07:00
Eddie Hung
ee5995641e opt_expr: optimise 1-bit $xor or $_XOR_ with constant input 2020-03-19 16:33:54 -07:00
Eddie Hung
8d1fa0e3b9 opt_expr: remove redundant 2020-03-19 14:34:27 -07:00
Eddie Hung
213a895589 opt_expr: optimise $sub when both A[i] and B[i] == 1'b1 2020-03-19 14:34:10 -07:00
Eddie Hung
a8e5d0c402 opt_expr: optimise for identity $alu-s just like $add/$sub 2020-03-19 14:24:55 -07:00
Eddie Hung
7ad7f41bc5 kernel: share a single CellTypes within a pass 2020-03-18 12:21:40 -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
432a09af80 kernel: SigSpec use more const& + overloads to prevent implicit SigSpec 2020-03-13 08:17:39 -07:00
Eddie Hung
de3e5fcdc6 ystests: fix write_smt2_write_smt2_cyclic_dependency_fail 2020-02-28 12:33:55 -08:00
Eddie Hung
1d401a7991 clean: ignore specify-s inside cells when determining whether to keep 2020-02-19 10:45:10 -08:00
Eddie Hung
505557e93e
Merge pull request #1576 from YosysHQ/eddie/opt_merge_init 
opt_merge: discard \init of '$' cells with 'Q' port when merging
 2020-02-05 14:56:26 -08:00
Marcelina Kościelnicka
34d2fbd2f9
Add opt_lut_ins pass. (#1673) 2020-02-03 14:57:17 +01:00
Claire Wolf
1679682fa3 Merge branch 'vector_fix' of https://github.com/Kmanfi/yosys 
Also some minor fixes to the original PR.
 2020-01-29 17:01:24 +01:00
Eddie Hung
a855f23f22 Merge remote-tracking branch 'origin/master' into eddie/opt_merge_init 2020-01-28 12:46:18 -08:00
David Shah
6fd9cae5ca opt_reduce: Call check() per run rather than per optimised cell 
Signed-off-by: David Shah <dave@ds0.me>
 2020-01-28 09:42:01 +00:00
Eddie Hung
f5e0a07ad6 Add $_FF_ and $_SR* courtesy of @mwkmwkmwk 2019-12-20 13:00:04 -08:00
Eddie Hung
d038cea3c7 More stringent check for flop cells 2019-12-20 12:32:00 -08:00
Alyssa Milburn
e709fd3da1 Fix opt_expr.eqneq.cmpzero debug print 2019-12-15 20:40:38 +01:00
Eddie Hung
83d36394f8 opt_merge to discard \init of '$' cells with 'Q' port when merging 2019-12-13 10:26:37 -08:00
Marcin Kościelnicki
fdcbda195b opt_share: Fix handling of fine cells. 
Fixes #1525.
 2019-11-27 08:01:07 +01:00
Clifford Wolf
03fb92ed6f Add "opt_mem" pass 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-11-22 17:45:22 +01:00
David Shah
f5804a84fd wreduce: Don't trim zeros or sext when not matching ARST_VALUE 
Signed-off-by: David Shah <dave@ds0.me>
 2019-11-14 18:43:15 +00:00
Clifford Wolf
a67d63714b Fix handling of z_digit "?" and fix optimization of cmp with "z" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-09-13 13:39:39 +02:00
Sean Cross
8d128ba6d0 passes: opt_share: don't statically initialize mergeable_type_map 
In 3d3779b037 this got turned from a
`std::map<std::string, std::string>` to `std::map<IdString, IdString>`.
Consequently, this exposed some initialization sequencing issues (#1361).

Only initialize the map when it's first used, to avoid these static issues.

This fixes #1361.

Signed-off-by: Sean Cross <sean@xobs.io>
 2019-09-09 12:40:01 +08:00
Eddie Hung
9245f0d3f5 Copy-paste typo 2019-08-22 08:43:44 -07:00
Eddie Hung
6f971470f8 Respect opt_expr -keepdc as per @cliffordwolf 2019-08-22 08:37:27 -07:00
Eddie Hung
379f33af54 Handle $shift and Y_WIDTH > 1 as per @cliffordwolf 2019-08-22 08:22:23 -07:00
Eddie Hung
9e31f01b34 Add cover() 2019-08-22 08:06:24 -07:00
Eddie Hung
d0ffe7544c Canonical form 2019-08-22 08:05:01 -07:00
Eddie Hung
d3a212ff91 opt_expr to trim A port of $shiftx if Y_WIDTH == 1 2019-08-21 21:53:55 -07:00