verilator/test_regress/t/t_opt_const.py

#!/usr/bin/env python3
# DESCRIPTION: Verilator: Verilog Test driver/expect definition
#
# 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-FileCopyrightText: 2024 Wilson Snyder
# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0

import vltest_bootstrap

test.scenarios('simulator')

test.compile(verilator_flags2=["-Wno-UNOPTTHREADS", "-fno-dfg", "--stats", test.pli_filename])

test.execute()

if test.vlt:
    test.file_grep(test.stats, r'Optimizations, Const bit op reduction\s+(\d+)', 49)
    test.file_grep(test.stats, r'SplitVar, packed variables split automatically\s+(\d+)', 1)

test.passes()