verilator/test_regress/t/t_timing_fork_comb.py

27 lines
813 B
Python
Executable File

#!/usr/bin/env python3
# DESCRIPTION: Verilator: Verilog Test driver/expect definition
#
# Copyright 2024 by Wilson Snyder. This program is free software; you
# can redistribute it and/or modify it under the terms of either the GNU
# Lesser General Public License Version 3 or the Perl Artistic License
# Version 2.0.
# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
import vltest_bootstrap
test.scenarios('simulator')
# Should convert the first always into combo and detect cycle
test.compile(fails=True, verilator_flags2=["--timing"])
test.file_grep(
test.compile_log_filename,
r'%Warning-UNOPTFLAT: t/t_timing_fork_comb.v:\d+:\d+: Signal unoptimizable: Circular combinational logic:'
)
test.compile(verilator_flags2=["--exe --main --timing -Wno-UNOPTFLAT"])
test.execute()
test.passes()