AutonamePass rescanned every selected cell/wire from scratch on every
iteration, and naming only propagates one hop per iteration, so cost
scaled with O(iterations x module_size). On a large, fully flattened
netlist with long dependency chains this meant multi-hour runtime and
40+ GB RSS. Likely the same issue as #5394, #4509 and #2816.
Replace the full-rescan loop with a ModuleAutonamer that keeps a
persistent worklist and only recomputes an object's proposal when a
direct neighbor was just renamed, using precomputed adjacency. Same
round-by-round batching as before, so the final naming is unchanged.
Adds tests/various/autoname_scaling.sh, which checks a 10000-cell
propagation chain still autonames within a time budget the old
algorithm could not meet.
This commit reimplements the (no longer recommended) setuptools based
build system using a standards-based in-tree PEP517 build backend.
The implementation is partially based on
https://codeberg.org/ziglang/zig-pypi/src/branch/main/make_wheels.py
which is licensed under BSD-0-clause.
It also adds a new option `YOSYS_BUILD_PYTHON_ONLY` that is available
only if the binary or the library aren't going to be installed, which
turns off these targets entirely, as well as some dependent ones
(e.g. tests).
Co-authored-by: Mohamed Gaber <me@donn.website>
Rewrite power-of-two indexed word selects to $bmux when the shift
amount already carries the scale as low zero bits.
Keep the rule to non-overlapping selections and bound the generated
mux ways. Add regressions for aligned shifts, padding, signed
extension, and shiftmul handoff cases.
Comes with a set of tests which (currently) pass with `read_verilog` but fail with `verific` based on #5878.
Add `--check-sv`, an alternative to `--prove-sv` with generator defined yosys commands. Helpful for when you want to run the same set of commands on a bunch of sv files.
