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* | proc: Add -nomux switchPeder Bergebakken Sundt2020-08-201-1/+10
| | | | | | | | running proc -nomux will ommit the proc_mux pass
* | Merge pull request #2344 from YosysHQ/mwk/opt_share-fixesclairexen2020-08-201-223/+138
|\ \ | | | | | | opt_share: Refactor, fix some bugs.
| * | opt_share: Refactor, fix some bugs.Marcelina Kościelnicka2020-08-171-223/+138
| | | | | | | | | | | | | | | | | | Fixes #2334. Fixes #2335. Fixes #2336.
* | | Merge pull request #2337 from YosysHQ/mwk/clean-keep-wireclairexen2020-08-201-4/+9
|\ \ \ | | | | | | | | opt_clean: Fix module keep rules.
| * | | opt_clean: Fix module keep rules.Marcelina Kościelnicka2020-08-091-4/+9
| |/ / | | | | | | | | | | | | | | | - wires with keep attribute now force a module to be kept - presence of $memwr and $meminit cells no longer forces a module to be kept
* | | Merge pull request #2333 from YosysHQ/mwk/peepopt-shiftmul-signedclairexen2020-08-201-5/+1
|\ \ \ | | | | | | | | peeopt.shiftmul: Add a signedness check.
| * | | peeopt.shiftmul: Add a signedness check.Marcelina Kościelnicka2020-08-051-5/+1
| | | | | | | | | | | | | | | | Fixes #2332.
* | | | Merge pull request #2328 from YosysHQ/mwk/opt_dff-cleanupclairexen2020-08-208-1468/+0
|\ \ \ \ | | | | | | | | | | Remove passes redundant with opt_dff
| * | | | Remove now-redundant dff2dffe pass.Marcelina Kościelnicka2020-08-072-415/+0
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| * | | | Remove now-redundant dff2dffs pass.Marcelina Kościelnicka2020-08-072-166/+0
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| * | | | peepopt: Remove now-redundant dffmux pattern.Marcelina Kościelnicka2020-08-073-175/+0
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| * | | | Remove now-redundant opt_rmdff pass.Marcelina Kościelnicka2020-08-072-712/+0
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* | | | Merge pull request #2327 from YosysHQ/mwk/techmap-constmap-fixclairexen2020-08-201-1/+22
|\ \ \ \ | | | | | | | | | | techmap.CONSTMAP: Handle outputs before inputs.
| * | | | techmap.CONSTMAP: Handle outputs before inputs.Marcelina Kościelnicka2020-08-051-1/+22
| | |/ / | |/| | | | | | | | | | Fixes #2321.
* | | | Merge pull request #2326 from YosysHQ/mwk/peeopt-muldiv-signclairexen2020-08-201-1/+4
|\ \ \ \ | | | | | | | | | | peepopt.muldiv: Add a signedness check.
| * | | | peepopt.muldiv: Add a signedness check.Marcelina Kościelnicka2020-08-041-1/+4
| |/ / / | | | | | | | | | | | | Fixes #2318.
* | | | Merge pull request #2319 from YosysHQ/mwk/techmap-celltype-patternclairexen2020-08-201-4/+32
|\ \ \ \ | | | | | | | | | | techmap: Add support for [] wildcards in techmap_celltype.
| * | | | techmap: Add support for [] wildcards in techmap_celltype.Marcelina Kościelnicka2020-08-021-4/+32
| |/ / / | | | | | | | | | | | | Fixes #1826.
* | / / Ensure \A_SIGNED is never used with $shiftxXiretza2020-08-181-0/+4
| |/ / |/| | | | | | | | | | | It has no effect on the output ($shiftx doesn't perform any sign extension whatsoever), so an attempt to use it should be caught early.
* | | Replace opt_rmdff with opt_dff.Marcelina Kościelnicka2020-08-072-9/+17
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* | Add dffunmap pass.Marcelina Kościelnicka2020-07-312-0/+108
| | | | | | | | | | To be used with backends that cannot deal with fancy FF types (like blif or smt).
* | opt_expr: Remove -clkinv option, make it the default.Marcelina Kościelnicka2020-07-312-14/+14
| | | | | | | | | | Adds -noclkinv option just in case the old behavior was actually useful to someone.
* | synth_ice40: Use opt_dff.Marcelina Kościelnicka2020-07-302-247/+86
| | | | | | | | | | | | | | | | | | The main part is converting ice40_dsp to recognize the new FF types created in opt_dff instead of trying to recognize the mux patterns on its own. The fsm call has been moved upwards because the passes cannot deal with $dffe/$sdff*, and other optimizations don't help it much anyway.
* | synth_xilinx: Use opt_dff.Marcelina Kościelnicka2020-07-305-861/+200
| | | | | | | | | | | | | | | | | | The main part is converting xilinx_dsp to recognize the new FF types created in opt_dff instead of trying to recognize the patterns on its own. The fsm call has been moved upwards because the passes cannot deal with $dffe/$sdff*, and other optimizations don't help it much anyway.
* | async2sync: Support all FF types.Marcelina Kościelnicka2020-07-302-145/+162
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* | Add opt_dff pass.Marcelina Kościelnicka2020-07-302-0/+876
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* | opt_expr: Fix handling of $_XNOR_ cells with A = B.Marcelina Kościelnicka2020-07-291-1/+1
| | | | | | | | Fixes #2311.
* | equiv_induct: Fix up assumption for $equiv cells in -undef mode.Marcelina Kościelnicka2020-07-271-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* | async2sync: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-53/+11
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* | memory_dff: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-12/+5
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* | proc_dlatch: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-28/+8
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* | pmux2shift: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-15/+4
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* | wreduce: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-37/+7
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* | techmap: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-41/+4
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* | shregmap: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-39/+10
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* | abc: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-25/+6
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* | dffinit: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-41/+7
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* | zinit: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-43/+11
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* | dfflegalize: Refactor to use FfInitVals.Marcelina Kościelnicka2020-07-241-80/+25
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* | clk2fflogic: Support all FF types.Marcelina Kościelnicka2020-07-241-200/+122
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* | memory_dff: recognize more dff cellsMarcelina Kościelnicka2020-07-231-11/+112
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* | techmap: Add _TECHMAP_CELLNAME_ special parameter.Marcelina Kościelnicka2020-07-211-0/+6
| | | | | | | | | | | | | | This parameter will resolve to the name of the cell being mapped. The first user of this parameter will be synth_intel_alm's Quartus output, which requires a unique (and preferably descriptive) name passed as a cell parameter for the memory cells.
* | qbfsat: Add `-solver-option` option.Alberto Gonzalez2020-07-202-1/+15
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* | opt_merge: Dedup one more use of FF cell type list.Marcelina Kościelnicka2020-07-151-3/+1
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* | proc_dlatch: Remove init values for combinatorial processes.Marcelina Kościelnicka2020-07-121-0/+33
| | | | | | | | Fixes #2258.
* | dfflegalize: Gather init values from all wires.Marcelina Kościelnicka2020-07-121-1/+1
| | | | | | | | Skipping non-selected wires is unsound in an obvious way.
* | dfflibmap: Refactor to use dfflegalize internally.Marcelina Kościelnicka2020-07-091-211/+78
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* | clkbufmap: improve input pad handling.Marcelina Kościelnicka2020-07-091-17/+39
| | | | | | | | | | | | - allow inserting only the input pad cell - do not insert the usual buffer if the input pad already acts as a buffer
* | clk2fflogic: Consistently treat async control signals as negative hold.Marcelina Kościelnicka2020-07-091-57/+51
| | | | | | | | | | | | | | This fixes some dfflegalize equivalence checks, and breaks others — and I strongly suspect the others are due to bad support for multiple async inputs in `proc` (in particular, lack of proper support for dlatchsr and sketchy circuits on dffsr control inputs).
* | dfflegalize: Add special support for const-D latches.Marcelina Kościelnicka2020-07-091-0/+18
| | | | | | | | | | | | Those can be created by `opt_dff` when optimizing `$adff` with const clock, or with D == Q. Make dfflegalize do the opposite transform when such dlatches would be otherwise unimplementable.
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