Marcelina Kościelnicka
835688bf80
opt_mem_feedback: Rewrite feedback path finding logic.
...
Fixes #2766 .
2021-05-24 23:20:30 +02:00
Marcelina Kościelnicka
1eea06bcc0
Add new helper class for merging FFs into cells, use for memory_dff.
...
Fixes #1854 .
2021-05-23 14:46:59 +02:00
Marcelina Kościelnicka
a23d9409e7
opt_mem: Remove write ports with const-0 EN.
...
Fixes #2765 .
2021-05-23 14:30:56 +02:00
Marcelina Kościelnicka
5c1e6a0e20
opt_dff: Fix NOT gates wired in reverse.
2021-05-04 21:03:40 +02:00
Marcelina Kościelnicka
3af871f969
opt_clean: Remove init attribute bits together with removed DFFs.
...
Fixes #2546 .
2021-03-15 17:16:53 +01:00
Marcelina Kościelnicka
f965b3fa54
rtlil: Disallow 0-width chunks in SigSpec.
...
Among other problems, this also fixes equality comparisons between
SigSpec by enforcing a canonical form.
Also fix another minor issue with possible non-canonical SigSpec.
Fixes #2623 .
2021-03-15 17:16:24 +01:00
Marcelina Kościelnicka
a3528649c8
memory_dff: Remove now-useless write port handling.
2021-03-08 20:16:29 +01:00
Marcelina Kościelnicka
01626e6746
opt_share: Fix X and CO signal width for shifted $alu in opt_share.
...
These need to be the same length as actual Y, not visible part of Y.
Fixes #2538 .
2021-01-14 14:54:08 +01:00
Marcelina Kościelnicka
7670a89e1f
opt_clean: Better memory handling.
...
Previously, `$memwr` and `$meminit` cells were always preserved (along
with the memory itself). With this change, they are instead part of the
main cell mark-and-sweep pass: a memory (and its `$meminit` and `$memwr`
cells) is only preserved iff any associated `$memrd` cell needs to be
preserved.
2020-10-08 18:05:51 +02:00
Xiretza
bed14241ef
tests: add gitignores for auto-generated makefiles
2020-09-26 16:28:24 +02:00
Xiretza
acd47bbd52
tests: Centralize test collection and Makefile generation
2020-09-21 15:07:02 +02:00
clairexen
a96df40814
Merge pull request #2344 from YosysHQ/mwk/opt_share-fixes
...
opt_share: Refactor, fix some bugs.
2020-08-20 16:24:53 +02:00
clairexen
6a68b8ed54
Merge pull request #2328 from YosysHQ/mwk/opt_dff-cleanup
...
Remove passes redundant with opt_dff
2020-08-20 16:21:58 +02:00
Marcelina Kościelnicka
2b777bbda8
opt_share: Refactor, fix some bugs.
...
Fixes #2334 .
Fixes #2335 .
Fixes #2336 .
2020-08-17 17:26:36 +02:00
Marcelina Kościelnicka
a0e99a9f3f
peepopt: Remove now-redundant dffmux pattern.
2020-08-07 13:21:34 +02:00
Marcelina Kościelnicka
e89cc9c02f
peepopt.muldiv: Add a signedness check.
...
Fixes #2318 .
2020-08-04 16:30:24 +02:00
Marcelina Kościelnicka
af6623ebb8
Add opt_dff pass.
2020-07-30 18:27:04 +02:00
Marcelina Kościelnicka
dc18bf1969
opt_expr: Fix handling of $_XNOR_ cells with A = B.
...
Fixes #2311 .
2020-07-29 12:41:43 +02:00
Marcelina Kościelnicka
abe4e9e607
clk2fflogic: Support all FF types.
2020-07-24 03:19:48 +02:00
Marcelina Kościelnicka
7afcb72c98
opt_expr: Fix crash on $mul optimization with more zeros removed than Y has.
...
Fixes #2221 .
2020-07-05 06:31:58 +02:00
Kamil Rakoczy
39c39848a2
Add sub-assign and and-assign tests
...
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
2020-06-25 14:32:05 +02:00
Kamil Rakoczy
470df03f3d
Move combined assign tests to single file
...
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
2020-06-25 14:19:16 +02:00
Kamil Rakoczy
f6d06c9f7b
Add xor-assignment test
...
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
2020-06-24 14:46:21 +02:00
Kamil Rakoczy
a5ca4eeefb
Add or-assignment and plus-assignment tests
...
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
2020-06-24 11:56:26 +02:00
Claire Wolf
b3b515087d
Fix tests/opt/opt_rmdff
...
This only passed before because "prep" was also running opt_rmdff
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
2020-06-09 22:48:26 +02:00
Eddie Hung
73b7ea713c
Merge pull request #1994 from YosysHQ/eddie/fix_bug1758
...
opt_expr: improve single-bit $and/$or/$xor/$xnor cells; gate cells too
2020-05-14 11:56:22 -07:00
Eddie Hung
5be4b00a0d
opt_clean: improve warning message
2020-05-14 00:59:38 -07:00
Eddie Hung
aa4a69f89b
opt_clean: add init test
2020-05-14 00:31:08 -07:00
Eddie Hung
49e64ad492
test: update opt_expr_alu test
2020-05-08 11:12:58 -07:00
Eddie Hung
495acf9815
tests: opt_expr tests that depend on consumex
2020-05-08 11:07:11 -07:00
Eddie Hung
7f9ecddb7f
Add testcase for #2010
2020-05-01 14:07:33 -07:00
Eddie Hung
b5f38f8342
opt_expr: const_xnor replacement to pad Y with 1'b1
2020-04-24 14:13:45 -07:00
Eddie Hung
ebd6fa945d
tests: opt_expr update xnor/xor tests
2020-04-24 11:16:25 -07:00
Eddie Hung
90b71eb84b
opt_expr: do not group by X, more fixes
2020-04-23 18:15:07 -07:00
Eddie Hung
b84415094c
tests: add opt_expr tests
2020-04-23 15:58:36 -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
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
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
6274f0b075
opt_expr: add failing $xnor test
2020-03-20 14:38:50 -07:00
Eddie Hung
81ca776ea4
opt_expr: add $xor/$xnor/$_XOR_/$_XNOR_ tests
2020-03-19 16:59:11 -07:00
Eddie Hung
5e2562f1a2
opt_expr: add $alu tests
2020-03-19 14:57:10 -07:00
Eddie Hung
9f30d7f843
opt_merge: speedup
2020-03-16 12:43:54 -07:00
Eddie Hung
505557e93e
Merge pull request #1576 from YosysHQ/eddie/opt_merge_init
...
opt_merge: discard \init of '$' 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
Eddie Hung
d86d073ad6
Add testcase
2019-12-13 10:26:30 -08:00
Marcin Kościelnicki
fdcbda195b
opt_share: Fix handling of fine cells.
...
Fixes #1525 .
2019-11-27 08:01:07 +01:00
Eddie Hung
173c7936c3
Add missing -assert to equiv_opt
2019-09-06 22:51:44 -07:00
Eddie Hung
6f971470f8
Respect opt_expr -keepdc as per @cliffordwolf
2019-08-22 08:37:27 -07:00