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* Add regression test for #2824.Marcelina Kościelnicka2021-06-111-0/+7
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* memory_map: Improve start_offset handling.Marcelina Kościelnicka2021-05-311-0/+100
| | | | Fixes #2775.
* opt_mem_feedback: Respect write port priority.Marcelina Kościelnicka2021-05-251-0/+47
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* opt_mem_feedback: Rewrite feedback path finding logic.Marcelina Kościelnicka2021-05-242-0/+243
| | | | Fixes #2766.
* Add new helper class for merging FFs into cells, use for memory_dff.Marcelina Kościelnicka2021-05-231-0/+17
| | | | Fixes #1854.
* opt_mem: Remove write ports with const-0 EN.Marcelina Kościelnicka2021-05-231-0/+34
| | | | Fixes #2765.
* opt_dff: Fix NOT gates wired in reverse.Marcelina Kościelnicka2021-05-041-8/+13
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* opt_clean: Remove init attribute bits together with removed DFFs.Marcelina Kościelnicka2021-03-151-11/+20
| | | | Fixes #2546.
* rtlil: Disallow 0-width chunks in SigSpec.Marcelina Kościelnicka2021-03-151-0/+14
| | | | | | | | | 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.
* memory_dff: Remove now-useless write port handling.Marcelina Kościelnicka2021-03-081-1/+0
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* opt_share: Fix X and CO signal width for shifted $alu in opt_share.Marcelina Kościelnicka2021-01-141-0/+20
| | | | | | These need to be the same length as actual Y, not visible part of Y. Fixes #2538.
* opt_clean: Better memory handling.Marcelina Kościelnicka2020-10-081-0/+49
| | | | | | | | Previously, `$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.
* tests: add gitignores for auto-generated makefilesXiretza2020-09-261-0/+1
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* tests: Centralize test collection and Makefile generationXiretza2020-09-211-5/+3
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* Merge pull request #2344 from YosysHQ/mwk/opt_share-fixesclairexen2020-08-203-0/+54
|\ | | | | opt_share: Refactor, fix some bugs.
| * opt_share: Refactor, fix some bugs.Marcelina Kościelnicka2020-08-173-0/+54
| | | | | | | | | | | | Fixes #2334. Fixes #2335. Fixes #2336.
* | Merge pull request #2328 from YosysHQ/mwk/opt_dff-cleanupclairexen2020-08-201-0/+129
|\ \ | | | | | | Remove passes redundant with opt_dff
| * | peepopt: Remove now-redundant dffmux pattern.Marcelina Kościelnicka2020-08-071-0/+129
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* / peepopt.muldiv: Add a signedness check.Marcelina Kościelnicka2020-08-041-0/+12
|/ | | | Fixes #2318.
* Add opt_dff pass.Marcelina Kościelnicka2020-07-3010-3/+914
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* opt_expr: Fix handling of $_XNOR_ cells with A = B.Marcelina Kościelnicka2020-07-291-0/+14
| | | | Fixes #2311.
* clk2fflogic: Support all FF types.Marcelina Kościelnicka2020-07-241-1/+0
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* opt_expr: Fix crash on $mul optimization with more zeros removed than Y has.Marcelina Kościelnicka2020-07-051-0/+16
| | | | Fixes #2221.
* Add sub-assign and and-assign testsKamil Rakoczy2020-06-251-0/+34
| | | | Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
* Move combined assign tests to single fileKamil Rakoczy2020-06-254-45/+49
| | | | Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
* Add xor-assignment testKamil Rakoczy2020-06-241-0/+15
| | | | Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
* Add or-assignment and plus-assignment testsKamil Rakoczy2020-06-242-0/+30
| | | | Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
* Fix tests/opt/opt_rmdffClaire Wolf2020-06-092-22/+29
| | | | | | This only passed before because "prep" was also running opt_rmdff Signed-off-by: Claire Wolf <claire@symbioticeda.com>
* Merge pull request #1994 from YosysHQ/eddie/fix_bug1758Eddie Hung2020-05-147-2/+446
|\ | | | | opt_expr: improve single-bit $and/$or/$xor/$xnor cells; gate cells too
| * test: update opt_expr_alu testEddie Hung2020-05-081-2/+1
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| * tests: opt_expr tests that depend on consumexEddie Hung2020-05-081-0/+35
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| * opt_expr: const_xnor replacement to pad Y with 1'b1Eddie Hung2020-04-241-0/+46
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| * tests: opt_expr update xnor/xor testsEddie Hung2020-04-242-7/+6
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| * opt_expr: do not group by X, more fixesEddie Hung2020-04-232-2/+2
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| * tests: add opt_expr testsEddie Hung2020-04-235-0/+365
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* | opt_clean: improve warning messageEddie Hung2020-05-141-1/+1
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* | opt_clean: add init testEddie Hung2020-05-141-0/+13
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* | Add testcase for #2010Eddie Hung2020-05-011-0/+10
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* opt_expr: Fix X and CO outputs for $alu identity-mapping rules.Marcelina Kościelnicka2020-04-161-8/+66
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* opt_expr: Add more $alu optimizations.Marcelina Kościelnicka2020-04-141-4/+52
| | | | | | | | | | | 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.
* opt_expr: Optimize multiplications with low 0 bits in operands.Marcelina Kościelnicka2020-04-131-0/+28
| | | | Fixes #1500.
* Merge pull request #1790 from YosysHQ/eddie/opt_expr_xorEddie Hung2020-04-011-0/+52
|\ | | | | opt_expr: optimise $xor/$xnor/$_XOR_/$_XNOR_ -s with constant inputs
| * opt_expr: add failing $xnor testEddie Hung2020-03-201-1/+13
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| * opt_expr: add $xor/$xnor/$_XOR_/$_XNOR_ testsEddie Hung2020-03-191-0/+40
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* | Merge pull request #1789 from YosysHQ/eddie/opt_expr_aluEddie Hung2020-04-011-0/+63
|\ \ | | | | | | opt_expr: improve performance on $alu and $sub
| * | opt_expr: add $alu testsEddie Hung2020-03-191-0/+63
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* / opt_merge: speedupEddie Hung2020-03-162-0/+92
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* Merge pull request #1576 from YosysHQ/eddie/opt_merge_initEddie Hung2020-02-051-0/+49
|\ | | | | opt_merge: discard \init of '$' cells with 'Q' port when merging
| * Add testcaseEddie Hung2019-12-131-0/+49
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* | Add opt_lut_ins pass. (#1673)Marcelina Kościelnicka2020-02-031-0/+23
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