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yosys-witness concat yw trace files

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Intended for use with SCY to combine sequential cover traces.
Arbitrary number of inputs, will load all and attempt to join them.  Each trace will be replayed one after the other, in the same order as the files are provided.
Mismatch in init_only fields seems to work fine, with values in subsequent traces being assigned in the initial only if they weren't previously defined.
Uncertain if a mismatch in non init_only fields will cause problems.
Fixes WitnessSig.__eq__().
Adds helper functions to WitnessValues and ReadWitness classes.
This commit is contained in:
Krystine Sherwin 2023-05-22 10:13:17 +12:00
parent ad2b04d63a
commit 8c9a0b51d4
No known key found for this signature in database
2 changed files with 58 additions and 15 deletions
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44
backends/smt2/witness.py
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@ -84,26 +84,48 @@ def stats(input):
Transform a Yosys witness trace.
Currently no transformations are implemented, so it is only useful for testing.
If two or more inputs are provided they will be concatenated together into the output.
""")
@click.argument("input", type=click.File("r"))
@click.argument("inputs", type=click.File("r"), nargs=-1)
@click.argument("output", type=click.File("w"))
def yw2yw(input, output):
click.echo(f"Copying yosys witness trace from {input.name!r} to {output.name!r}...")
inyw = ReadWitness(input)
def yw2yw(inputs, output):
outyw = WriteWitness(output, "yosys-witness yw2yw")
join_inputs = len(inputs) > 1
inyws = {}
for input in inputs:
if (join_inputs):
click.echo(f"Loading signals from yosys witness trace {input.name!r}...")
inyw = ReadWitness(input)
inyws[input] = inyw
for clock in inyw.clocks:
if clock not in outyw.clocks:
outyw.add_clock(clock["path"], clock["offset"], clock["edge"])
for clock in inyw.clocks:
outyw.add_clock(clock["path"], clock["offset"], clock["edge"])
for sig in inyw.signals:
if sig not in outyw.signals:
outyw.add_sig(sig.path, sig.offset, sig.width, sig.init_only)
for sig in inyw.signals:
outyw.add_sig(sig.path, sig.offset, sig.width, sig.init_only)
init_values = sum([inyw.init_step() for inyw in inyws.values()], start=WitnessValues())
for t, values in inyw.steps():
outyw.step(values)
first_witness = True
for (input, inyw) in inyws.items():
click.echo(f"Copying yosys witness trace from {input.name!r} to {output.name!r}...")
if first_witness:
outyw.step(init_values)
else:
outyw.step(inyw.first_step())
for t, values in inyw.steps(1):
outyw.step(values)
click.echo(f"Copied {t + 1} time steps.")
first_witness = False
outyw.end_trace()
click.echo(f"Copied {outyw.t + 1} time steps.")
if join_inputs:
click.echo(f"Copied {outyw.t} total time steps.")
class AigerMap: