25 lines
797 B
Python
Executable File
25 lines
797 B
Python
Executable File
#!/usr/bin/env python3
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# DESCRIPTION: Verilator: Verilog Test driver/expect definition
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of either the GNU Lesser General Public License Version 3
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# or the Perl Artistic License Version 2.0.
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# SPDX-FileCopyrightText: 2026 Wilson Snyder
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# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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import vltest_bootstrap
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test.scenarios('vlt')
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# Reuse the same design; only the optimization switch differs.
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test.top_filename = "t/t_bit_scan_loops.v"
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test.compile(verilator_flags2=['--stats', '--unroll-count', '0', '-fno-bit-scan-loops'])
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# With the optimization disabled, nothing lowers.
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test.file_grep(test.stats, r'Lowered priority-encoder to mostsetbitp1\s+([0-9])', 0)
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test.execute()
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test.passes()
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