Jannis Harder
95db5a9d38
formalff: New -setundef option
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Find FFs with undefined initialization values for which changing the
initialization does not change the observable behavior and initialize
them. For -ff2anyinit, this reduces the number of generated $anyinit
cells that drive wires with private names.
2022-08-16 13:37:30 +02:00
Jannis Harder
a5e1d3b997
formalff: Set new replaced_by_gclk attribute on removed dff's clks
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This attribute can be used by formal backends to indicate which clocks
were mapped to the global clock. Update the btor and smt2 backend which
already handle clock inputs to understand this attribute.
2022-08-16 13:37:30 +02:00
Jannis Harder
c0063288d6
Add the $anyinit cell and the formalff pass
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These can be used to protect undefined flip-flop initialization values
from optimizations that are not sound for formal verification and can
help mapping all solver-provided values in witness traces for flows that
use different backends simultaneously.
2022-08-16 13:37:30 +02:00
Miodrag Milanovic
f4a1906721
support file locations containing spaces
2022-08-08 20:30:50 +02:00
Jannis Harder
14ba50908b
sim: Fix $anyseq in nested modules
2022-07-22 14:48:30 +02:00
Jannis Harder
5db542742b
async2sync: turn FFs with const clks into gclk FFs with feedback
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The formal backends do not support multiple clocks. This includes
constant clocks. Constant clocks do appear in what isn't a proper
multiclock design, for example when mapping not fully initialized ROMs.
As converting FFs with constant clocks to FFs using the global is doable
even in a single clock flow, make async2sync do this.
2022-06-30 12:09:04 +02:00
Jannis Harder
459941c8ff
fmcombine: Add _gold/_gate suffix to memids
2022-06-03 21:52:28 +02:00
Mohamed A. Bamakhrama
1822be8792
Observe $TMPDIR variable when creating tmp files
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POSIX defines $TMPDIR as containing the pathname of the directory where
programs can create temporary files. On most systems, this variable points to
"/tmp". However, on some systems it can point to a different location.
Without respecting this variable, yosys fails to run on such systems.
Signed-off-by: Mohamed A. Bamakhrama <mohamed@alumni.tum.de>
2022-05-27 15:06:53 +02:00
Miodrag Milanovic
8e02b3ca30
fix crash when no fst input
2022-05-04 11:21:39 +02:00
Miodrag Milanovic
ad48639cdd
Start restoring memory state from VCD/FST
2022-05-04 10:41:04 +02:00
Miodrag Milanovic
3730db4b98
AIM file could have gaps in or between inputs and inits
2022-05-02 11:18:30 +02:00
Miodrag Milanovic
bbfdea2f8a
Match $anyseq input if connected to public wire
2022-04-22 17:20:17 +02:00
Miodrag Milanovic
4d80bc24c7
Treat $anyseq as input from FST
2022-04-22 16:23:39 +02:00
Miodrag Milanovic
33f4009bb5
Last sample from input does not represent change
2022-04-22 13:46:11 +02:00
Miodrag Milanovic
83cad82b29
latches are always set to zero
2022-04-22 12:04:05 +02:00
Miodrag Milanovic
c989adcc2d
If not multiclock, output only on clock edges
2022-04-22 12:03:39 +02:00
Miodrag Milanovic
75032a565d
Set init state for all wires from FST and set past
2022-04-22 11:57:39 +02:00
Miodrag Milanovic
8fa2f3b260
Fix multiclock for btor2 witness
2022-04-22 11:53:41 +02:00
Miodrag Milanovic
9508bb2330
Fix reading aiw from other solvers
2022-04-15 11:45:16 +02:00
Miodrag Milanovic
868409361c
Use wrap_async_control_gate if ff is fine
2022-04-08 16:30:29 +02:00
Iris Johnson
ccc6060f52
Makefile: properly conditionalize features requiring compression.
2022-04-07 20:07:44 -05:00
Miodrag Milanovic
6020ba67ac
past_ad initial value setting
2022-04-02 19:13:15 +02:00
Miodrag Milanovic
2c96ecc5f7
setInitState can be only one altering values
2022-04-02 19:13:15 +02:00
Miodrag Milanovic
b54aecd80a
Set past_d value for init state
2022-04-02 19:13:15 +02:00
Miodrag Milanovic
86ce441af6
Set init values for wrapped async control signals
2022-04-01 17:44:00 +02:00
Miodrag Milanovic
c95b9b4ba5
Support memories in aiw and multiclock
2022-03-31 13:10:13 +02:00
Miodrag Milanovic
322ab1cd54
Proper SigBit forming in sim
2022-03-22 14:43:18 +01:00
Miodrag Milanovic
ff3b0c2c46
Proper SigBit forming in sim
2022-03-22 14:22:32 +01:00
Miodrag Milanovic
55eed8df57
More verbose warnings
2022-03-18 14:47:35 +01:00
Miodrag Milanovic
1f3423cd7d
Recognize registers and set initial state for them in tb
2022-03-16 14:35:39 +01:00
Miodrag Milanovic
e217e3017a
Update sim help message.
2022-03-16 07:55:57 +01:00
Miodrag Milanovic
f5c20b8286
Added fst2tb pass for generating testbench
2022-03-14 19:06:29 +01:00
Miodrag Milanović
cbece4af0c
Merge pull request #3229 from YosysHQ/micko/sim_date
...
Add date parameter to enable full date/time and version info
2022-03-11 19:02:57 +01:00
Claire Xenia Wolf
e21badd4b3
Add "sim -q" option
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Signed-off-by: Claire Xenia Wolf <claire@clairexen.net>
2022-03-11 16:26:11 +01:00
Miodrag Milanovic
37de369ba7
Add date parameter to enable full date/time and version info
2022-03-11 16:01:59 +01:00
Claire Xenia Wolf
be32de1caa
Small fix in "sim" help message
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Signed-off-by: Claire Xenia Wolf <claire@clairexen.net>
2022-03-11 15:36:23 +01:00
Miodrag Milanovic
5204694123
FstData already do conversion to VCD
2022-03-11 15:21:36 +01:00
Miodrag Milanovic
b72c779204
Support cell name in btor witness file
2022-03-11 15:11:14 +01:00
Miodrag Milanovic
357336339a
Proper write of memory data
2022-03-11 11:19:53 +01:00
Miodrag Milanovic
295b0d1899
Start work on memory init
2022-03-09 18:34:02 +01:00
Miodrag Milanovic
f37ac5d934
Fixes and error check
2022-03-09 09:48:29 +01:00
Miodrag Milanovic
ede348cdc2
cleanup
2022-03-07 16:32:32 +01:00
Miodrag Milanovic
1b1ecd4ab0
Error checks for aiger witness
2022-03-07 15:00:14 +01:00
Miodrag Milanovic
b6aca1d743
btor2 witness co-simulation
2022-03-07 13:59:36 +01:00
Miodrag Milanović
9581b9adac
Merge pull request #3219 from YosysHQ/micko/quick_vcd
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VCD reader support by using external tool
2022-03-04 10:42:14 +01:00
Miodrag Milanovic
59983eda17
Add option to ignore X only signals in output
2022-03-02 16:02:13 +01:00
Miodrag Milanovic
48b56a4f7f
Write simulation files after simulation is performed
2022-03-02 15:23:07 +01:00
Miodrag Milanovic
28bc88a57e
Cleanup
2022-03-02 09:39:22 +01:00
Miodrag Milanovic
94505395a9
Refactor sim output writers
2022-02-28 18:22:39 +01:00
Miodrag Milanovic
dfd4c81eac
Quick fix
2022-02-28 11:40:06 +01:00
