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60eab3eb8c
* Tests: Add a test to reproduce #3509 * Tests: Compile without tautological-compare check because bit op tree optimization is disabled in the test. * Internals: Dedup code. No functional change is intended. * Fix #3509. "2'b10 == (2'b11 & {1'b0, val[0]})" and "2'b10 != (2'b11 & {1'b0, val[0]})" were wrongly optimized to "!val[0]" and "val[0]" respectively. Now properly optimize them to 1'b0 and 1'b1. * Commentary * Commentary: Update Changes
32 lines
911 B
Perl
Executable File
32 lines
911 B
Perl
Executable File
#!/usr/bin/env perl
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if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
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# DESCRIPTION: Verilator: Verilog Test driver/expect definition
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#
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# Copyright 2003 by Wilson Snyder. This program is free software; you
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# can redistribute it and/or modify it under the terms of either the GNU
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# Lesser General Public License Version 3 or the Perl Artistic License
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# Version 2.0.
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# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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scenarios(simulator => 1);
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top_filename("t/t_const_opt.v");
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# Run the same design as t_const_opt.pl without bitopt tree optimization to make sure that the result is same.
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compile(
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verilator_flags2 => [
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"-Wno-UNOPTTHREADS",
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"--stats",
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"-fno-const-bit-op-tree",
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"$Self->{t_dir}/t_const_opt.cpp",
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"-CFLAGS",
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"-Wno-tautological-compare"
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],
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);
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execute(
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check_finished => 1,
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);
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ok(1);
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1;
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