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3372 Commits

Author SHA1 Message Date
Xiretza 916028906a Ensure \A_SIGNED is never used with $shiftx 
It has no effect on the output ($shiftx doesn't perform any sign
extension whatsoever), so an attempt to use it should be caught early.
 2020-08-18 19:36:24 +02:00
Marcelina Kościelnicka 9a4f420b4b Replace opt_rmdff with opt_dff. 2020-08-07 13:21:03 +02:00
Marcelina Kościelnicka 18ad56ef41 Add dffunmap pass. 
To be used with backends that cannot deal with fancy FF types (like blif
or smt).
 2020-07-31 00:59:51 +02:00
Marcelina Kościelnicka 6cd135a5eb opt_expr: Remove -clkinv option, make it the default. 
Adds -noclkinv option just in case the old behavior was actually useful
to someone.
 2020-07-31 00:08:15 +02:00
Marcelina Kościelnicka cf60699884 synth_ice40: Use opt_dff. 
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.
 2020-07-30 22:26:20 +02:00
Marcelina Kościelnicka 8501342fc5 synth_xilinx: Use opt_dff. 
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.
 2020-07-30 22:26:09 +02:00
Marcelina Kościelnicka 4a05cad7f8 async2sync: Support all FF types. 2020-07-30 20:22:03 +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 a1a0abf52a equiv_induct: Fix up assumption for $equiv cells in -undef mode. 
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
 2020-07-27 18:36:13 +02:00
Marcelina Kościelnicka bd959d5d9e async2sync: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka c9251eb26b memory_dff: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka 557f81cb49 proc_dlatch: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka 31d6107521 pmux2shift: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka 4d9105ccb0 wreduce: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka 7b1a4fc1e6 techmap: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka 9e72be3ae8 shregmap: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka 522f367db3 abc: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka 336b8c7786 dffinit: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka 1c8483b7dd zinit: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka e98382f6e2 dfflegalize: Refactor to use FfInitVals. 2020-07-24 11:22:31 +02:00
Marcelina Kościelnicka abe4e9e607 clk2fflogic: Support all FF types. 2020-07-24 03:19:48 +02:00
Marcelina Kościelnicka eae2edf3e4 memory_dff: recognize more dff cells 2020-07-23 20:55:28 +02:00
Marcelina Kościelnicka dc07ae9677 techmap: Add _TECHMAP_CELLNAME_ special parameter. 
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.
 2020-07-21 15:00:54 +02:00
Alberto Gonzalez 2f786fcfac
qbfsat: Add `-solver-option` option. 2020-07-20 21:54:56 +00:00
Marcelina Kościelnicka 61a7ec4768 opt_merge: Dedup one more use of FF cell type list. 2020-07-15 06:19:18 +02:00
Marcelina Kościelnicka b33744b03a proc_dlatch: Remove init values for combinatorial processes. 
Fixes #2258.
 2020-07-12 18:50:30 +02:00
Marcelina Kościelnicka 240351c44e dfflegalize: Gather init values from all wires. 
Skipping non-selected wires is unsound in an obvious way.
 2020-07-12 17:39:13 +02:00
Marcelina Kościelnicka 7ed9d18907 dfflibmap: Refactor to use dfflegalize internally. 2020-07-09 18:51:03 +02:00
Marcelina Kościelnicka 32d2cc8c28 clkbufmap: improve input pad handling. 
- allow inserting only the input pad cell
- do not insert the usual buffer if the input pad already acts as a
  buffer
 2020-07-09 18:48:01 +02:00
Marcelina Kościelnicka 03e28f7ab4 clk2fflogic: Consistently treat async control signals as negative hold. 
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).
 2020-07-09 18:12:47 +02:00
Marcelina Kościelnicka e9c2c1b717 dfflegalize: Add special support for const-D latches. 
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.
 2020-07-09 18:11:32 +02:00
Marcelina Kościelnicka 943147b768 dfflegalize: typo fix 2020-07-07 15:00:52 +02:00
Marcelina Kościelnicka af54b8bc61 Naming fixes. 2020-07-05 22:21:59 +02:00
Marcelina Kościelnicka f3f55ae7c2 dfflegalize: Prefer mapping dff to sdff before adff 
This ensures that, when both sync and async FFs are available and abc9
is involved, the sync FFs will be used, and will thus remain available
for sequential synthesis.
 2020-07-05 12:01:43 +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
Eddie Hung 27a9d1b6e6 abc9: only techmap (* abc9_flop *) modules 2020-07-04 19:45:10 +02:00
Eddie Hung 0ba79feb6f abc9: techmap from user design to allow abc9_flop modules to be composed 
from other primitives
 2020-07-04 19:45:10 +02:00
Rupert Swarbrick a9b61080a4 Add newlines to help text for dfflegalize 
I think these were probably missed by accident. Spotted because GCC
spits out lots of messages like this:

passes/techmap/dfflegalize.cc:114:7: warning: zero-length gnu_printf format string [-Wformat-zero-length]
  114 |   log("");
      |       ^~

(because we tell GCC that the first argument to log() looks like a
printf control string in log.h, and a zero length such string triggers
a warning).
 2020-07-03 12:30:12 +02:00
clairexen e4b9e64d1b
Merge pull request #2208 from boqwxp/qbfsat-cleanup 
qbfsat: Cleanup and refactoring
 2020-07-02 17:48:37 +02:00
clairexen 5428666151
Merge pull request #2186 from YosysHQ/mwk/dfflegalize 
Add dfflegalize pass.
 2020-07-02 17:46:11 +02:00
clairexen d3422f8a5e
Merge pull request #2211 from YosysHQ/mwk/fix-fmcombine-ff 
fmcombine: use the master ff cell type list
 2020-07-02 17:43:48 +02:00
clairexen 5dbf91847a
Merge pull request #2210 from YosysHQ/mwk/fix-opt_merge 
opt_merge: use the master FF type list
 2020-07-02 17:43:34 +02:00
Alberto Gonzalez 56f98b9e3d
qbfsat: Remove useless comment and #ifndef guards. 2020-07-01 19:55:16 +00:00
Alberto Gonzalez 3345d39e6f
qbfsat: Specify default values for some options in the help message. 2020-07-01 19:55:16 +00:00
Alberto Gonzalez 95e8016811
qbfsat: Clean up external executable command lines and update temporary directory name. 2020-07-01 19:55:16 +00:00
Alberto Gonzalez 8cd60be654
qbfsat: Clean up and refactor data structures into `qbfsat.h`. 2020-07-01 19:55:16 +00:00
clairexen b1707407a0
Merge pull request #2138 from boqwxp/qbfsat-oflag 
qbfsat: Add `-O[012]` options to control pre-solving simplification with ABC
 2020-07-01 16:35:27 +02:00
clairexen 2b0f6e24e2
Merge pull request #2206 from boqwxp/qbfsat-fix-name-specialization 
qbfsat: Fix name-based hole specialization
 2020-07-01 16:34:32 +02:00
Marcelina Kościelnicka e3564b4502 Add dfflegalize pass. 2020-07-01 01:57:15 +02:00