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* Revert "Proof-of-concept: preserve naming through ABC using dress"Clifford Wolf2018-12-161-51/+29
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* Merge pull request #735 from daveshah1/trifixesClifford Wolf2018-12-161-3/+4
|\ | | | | deminout fixes
| * deminout: Consider $tribuf cellsDavid Shah2018-12-121-2/+2
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
| * deminout: Don't demote constant-driven inouts to inputsDavid Shah2018-12-121-1/+2
| | | | | | | | Signed-off-by: David Shah <dave@ds0.me>
* | Merge pull request #714 from daveshah1/abc_preserve_namingClifford Wolf2018-12-161-29/+51
|\ \ | | | | | | Proof-of-concept: preserve naming through ABC using dress
| * | abc: Preserve naming through ABC using 'dress' commandDavid Shah2018-12-061-29/+51
| |/ | | | | | | Signed-off-by: David Shah <dave@ds0.me>
* / lut2mux: handle 1-bit INIT constant in $lut cells.whitequark2018-12-051-1/+1
|/ | | | | This pass already handles INIT constants shorter than 2^width, but that was not done for the recursion base case.
* Fix typoClifford Wolf2018-12-041-1/+1
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* dff2dffe: Add option for unmap to only remove DFFE with low CE signal useSylvain Munaut2018-11-271-1/+36
| | | | Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
* DFFLIBMAP: changed 'missing pin' error into a warning with additional ↵Niels Moseley2018-11-061-1/+10
| | | | reason/info.
* Allow square brackets in liberty identifiersClifford Wolf2018-11-051-2/+2
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Liberty file newline handling is more relaxed. More descriptive error messageNiels Moseley2018-11-031-4/+7
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* Report an error when a liberty file contains pin references that reference ↵Niels Moseley2018-11-031-0/+3
| | | | non-existing pins
* Merge pull request #591 from hzeller/virtual-overrideClifford Wolf2018-08-1528-62/+62
|\ | | | | Consistent use of 'override' for virtual methods in derived classes.
| * Consistent use of 'override' for virtual methods in derived classes.Henner Zeller2018-07-2028-62/+62
| | | | | | | | | | | | | | | | | | 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)
* | Add missing <deque> include (MSVC build fix)Clifford Wolf2018-07-221-0/+1
|/ | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* ecp5: Adding synchronous set/reset supportDavid Shah2018-07-143-3/+155
| | | | Signed-off-by: David Shah <davey1576@gmail.com>
* Be slightly less aggressive in "deminout" passClifford Wolf2018-06-191-4/+28
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Fix infinite loop in abc command under emscriptenRobert Ou2018-05-181-5/+7
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* Add an option to statically link abc into yosysRobert Ou2018-05-181-0/+20
| | | | This is currently incomplete because the output filter no longer works.
* Fix iopadmap for loops between tristate IO buffersClifford Wolf2018-05-151-0/+21
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Fix iopadmap for cases where IO pins already have buffers on themClifford Wolf2018-05-151-1/+35
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Add ABC FAQ to "help abc"Clifford Wolf2018-05-041-2/+6
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Replace -ignore_redef with -[no]overwriteClifford Wolf2018-05-031-2/+2
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Added missing dont_use handling for SR FFs to dfflibmapClifford Wolf2018-04-051-0/+4
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Fix handling of src attributes in flattenClifford Wolf2018-03-101-7/+2
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Add "dffinit -highlow" and fix synth_intelClifford Wolf2018-01-091-0/+20
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Add support for "yosys -E"Clifford Wolf2018-01-071-0/+1
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Value of properties can be expression.Staf Verhaegen2018-01-031-2/+22
| | | | | | | | | | | | | | Example found in the 2007.03 Liberty Reference Manual that was also found in the wild: input_voltage(CMOS) { vil : 0.3 * VDD ; vih : 0.7 * VDD ; vimin : -0.5 ; vimax : VDD + 0.5 ; } Current implementation just parses the expression but no interpretation is done.
* Rewrite ABC output to include proper net names in timing reportClifford Wolf2017-10-101-2/+17
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* Added missing "break"Andrew Zonenberg2017-09-151-0/+1
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* Implemented off-chain support for extract_reduceAndrew Zonenberg2017-09-151-84/+157
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* extract_reduce now only removes the head of the chain, relying on "clean" to ↵Andrew Zonenberg2017-09-151-9/+19
| | | | delete upstream cells. Added "-allow-off-chain" flag, but it's currently ignored.
* Merge pull request #412 from azonenberg/reduce-fixesClifford Wolf2017-09-141-2/+2
|\ | | | | extract_reduce: Fix segfault on "undriven" inputs
| * extract_reduce: Fix segfault on "undriven" inputsRobert Ou2017-09-141-2/+2
| | | | | | | | | | | | | | | | This is easily triggered when un-techmapping if the technology-specific cell library isn't loaded. Outputs of technology-specific cells will be seen as inputs, and nets using those outputs will be seen as undriven. Just ignore these cells because they can't be part of a reduce chain anyways.
* | Fixed bug where counter extraction on non-GreenPAK devices incorrectly ↵Andrew Zonenberg2017-09-141-32/+27
| | | | | | | | handled parallel counter output
* | Added support for inferring counters with reset to full scale instead of zeroAndrew Zonenberg2017-09-141-4/+11
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* | Added RESET_TO_MAX parameter to $__COUNT_ cell. Cannot yet be extracted.Andrew Zonenberg2017-09-141-0/+1
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* | Added support for inferring counters with active-low resetAndrew Zonenberg2017-09-141-6/+15
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* | Initial support for extraction of counters with clock enableAndrew Zonenberg2017-09-141-9/+66
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* | Fixed typo in comment. Fixed bug where extract_counter would create up ↵Andrew Zonenberg2017-09-141-2/+2
|/ | | | counters when it meant to create down counters.
* Further improve extract_fa (but still buggy)Clifford Wolf2017-09-021-28/+91
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* Merge branch 'master' of github.com:cliffordwolf/yosysClifford Wolf2017-09-012-0/+583
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| * extract_counter: Added optimizations to remove unused high-order bitsAndrew Zonenberg2017-08-301-16/+34
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| * extract_counter: Minor changes requested to comply with upstream policy, ↵Andrew Zonenberg2017-08-301-3/+4
| | | | | | | | fixed a few typos
| * Finished refactoring counter extraction to be nice and generic. Implemented ↵Andrew Zonenberg2017-08-281-11/+25
| | | | | | | | techmapping from $__COUNT_ to GP_COUNTx cells.
| * Refactored extract_counter to be generic vs GreenPAK specificAndrew Zonenberg2017-08-281-51/+87
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| * Refactoring: Renamed greenpak4_counters pass to extract_counter, moved it to ↵Andrew Zonenberg2017-08-282-0/+514
| | | | | | | | techmap/ since it's going to become a generic pass
* | Update more stuff to use get_src_attribute() and set_src_attribute()Clifford Wolf2017-09-011-4/+4
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* | updated to use get_src_attribute() and set_src_attribute().Jason Lowdermilk2017-08-313-10/+7
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