tests: use verilator_flags and skip more widely

test_regress/t/t_alw_split.pl

@@ -11,7 +11,7 @@ compile (
 	 verilator_flags2 => ["--stats"],
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     file_grep ($Self->{stats}, qr/Optimizations, Split always\s+6/i);
 }
 

test_regress/t/t_alw_splitord.pl

@@ -11,7 +11,7 @@ compile (
 	 verilator_flags2 => ["--stats"],
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     file_grep ($Self->{stats}, qr/Optimizations, Split always\s+0/i);
 }
 

test_regress/t/t_assert_basic.pl

@@ -8,7 +8,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Version 2.0.
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--assert':($Self->{nc}?'+assert':'')],
+	 verilator_flags2 => ['--assert'],
+	 nc_flags2 => ['+assert'],
 	 );
 
 execute (

test_regress/t/t_assert_basic_cover.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_assert_basic.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--assert --sp --coverage-user':''],
+	 verilator_flags2 => ['--assert --sp --coverage-user'],
 	 );
 
 execute (

test_regress/t/t_assert_cover.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_assert_cover.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--assert --sp --coverage-user':''],
+	 verilator_flags2 => ['--assert --sp --coverage-user'],
 	 nc_flags2 => ["+nccovoverwrite +nccoverage+all +nccovtest+$Self->{name}"]
 	 );
 

test_regress/t/t_assert_synth.pl

@@ -8,7 +8,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Version 2.0.
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--assert':($Self->{nc}?'+assert':'')],
+	 verilator_flags2 => ['--assert'],
+    	 nc_flags2 => ['+assert'],
 	 );
 
 execute (

test_regress/t/t_assert_synth_full.pl

@@ -10,8 +10,9 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_assert_synth.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--assert':($Self->{nc}?'+assert':''),
-		      '+define+FAILING_FULL',],
+	 v_flags2 => ['+define+FAILING_FULL'],
+	 verilator_flags2 => ['--assert'],
+	 nc_flags2 => ['+assert'],
 	 );
 
 execute (

test_regress/t/t_assert_synth_parallel.pl

@@ -10,8 +10,9 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_assert_synth.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--assert':($Self->{nc}?'+assert':''),
-		      '+define+FAILING_PARALLEL',],
+	 v_flags2 => ['+define+FAILING_PARALLEL'],
+	 verilator_flags2 => ['--assert'],
+	 nc_flags2 => ['+assert'],
 	 );
 
 execute (

test_regress/t/t_case_huge.pl

@@ -11,7 +11,7 @@ compile (
 	 verilator_flags2 => ["--stats --profile-cfuncs"],
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     file_grep ($Self->{stats}, qr/Optimizations, Tables created\s+10/i);
     file_grep ($Self->{stats}, qr/Optimizations, Combined CFuncs\s+10/i);
 }

test_regress/t/t_clk_2in.pl

@@ -7,14 +7,18 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
-	 v_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
-	 ) if $Self->{v3};
+	 v_flags2 => ["$Self->{t_dir}/$Self->{name}.cpp"],
+	 verilator_flags2 => ["--exe"],
+	 );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+	 );
+
 ok(1);
 1;

test_regress/t/t_clk_2in_vec.pl

@@ -9,14 +9,17 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_clk_2in.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
-	 v_flags2 => ["+define+T_CLK_2IN_VEC=1 --exe $Self->{t_dir}/t_clk_2in.cpp"],
-	 ) if $Self->{v3};
+	 v_flags2 => ["+define+T_CLK_2IN_VEC=1 $Self->{t_dir}/t_clk_2in.cpp"],
+	 verilator_flags2 => ["--exe"],
+	 );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+	 );
 ok(1);
 1;

test_regress/t/t_clk_gater.pl

@@ -15,7 +15,7 @@ execute (
 	 check_finished=>1,
      );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     #Optimization is disabled
     #file_grep ($Self->{stats}, qr/Optimizations, Gaters inserted\s+3/i);
 }

test_regress/t/t_debug_fatalsrc_bad.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 $Self->{vlt} or $Self->skip("Verilator only test");
 
 compile (
-	 v_flags2 => ["--debug-fatalsrc"],
+	 verilator_flags2 => ["--debug-fatalsrc"],
 	 fails=>$Self->{v3},
 	 expect=>
 '%Error: Internal Error: .*: --debug-fatal-src

test_regress/t/t_debug_sigsegv_bad.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 $Self->{vlt} or $Self->skip("Verilator only test");
 
 compile (
-	 v_flags2 => ["--debug-sigsegv"],
+	 verilator_flags2 => ["--debug-sigsegv"],
 	 fails=>$Self->{v3},
 	 expect=>
 '%Error: Verilator internal fault, sorry.  Consider trying --debug --gdbbt

test_regress/t/t_delay.pl

@@ -8,7 +8,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Version 2.0.
 
 compile (
-	 v_flags2 => [$Self->{v3}?'-Wno-STMTDLY':''],
+	 verilator_flags2 => ['-Wno-STMTDLY'],
 	 );
 
 execute (

test_regress/t/t_delay_stmtdly_bad.pl

@@ -9,12 +9,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_delay.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 fails=>1,
 	 expect=>
 '%Warning-STMTDLY: t/t_delay.v:\d+: Ignoring delay on this delayed statement.
 .*%Error: Exiting due to.*',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_display_noopt.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_display.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?"-O0":""],
+	 verilator_flags2 => ["-O0"],
 	 );
 
 execute (

test_regress/t/t_display_real_noopt.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_display_real.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?"-O0":""],
+	 verilator_flags2 => ["-O0"],
 	 );
 
 execute (

test_regress/t/t_display_signed_noopt.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_display_signed.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?"-O0":""],
+	 verilator_flags2 => ["-O0"],
 	 );
 
 execute (

test_regress/t/t_dpi_export.pl

@@ -11,8 +11,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 compile (
 	 # Amazingly VCS, NC and Verilator all just accept the C file here!
-	 v_flags2 => ["-Wall -Wno-DECLFILENAME t/t_dpi_export_c.cpp"],
-	 verilator_flags2 => ["-no-l2name"],
+	 v_flags2 => ["t/t_dpi_export_c.cpp"],
+	 verilator_flags2 => ["-Wall -Wno-DECLFILENAME -no-l2name"],
 	 );
 
 execute (

test_regress/t/t_dpi_import.pl

@@ -9,7 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 compile (
 	 # Amazingly VCS, NC and Verilator all just accept the C file here!
-	 v_flags2 => ["-Wall -Wno-DECLFILENAME t/t_dpi_import_c.cpp"],
+	 v_flags2 => ["t/t_dpi_import_c.cpp"],
+	 verilator_flags2 => ["-Wall -Wno-DECLFILENAME"],
 	 );
 
 execute (

test_regress/t/t_emit_constw.pl

@@ -8,7 +8,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Version 2.0.
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--Ox':''],
+	 verilator_flags2 => ['--Ox'],
 	 );
 
 execute (

test_regress/t/t_enum_overlap_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>$Self->{v3},
@@ -14,7 +16,7 @@ compile (
 '%Error: t/t_enum_overlap_bad.v:\d+: Overlapping enumeration value: e1b
 %Error: t/t_enum_overlap_bad.v:\d+: ... Location of original declaration
 %Error: Exiting due to',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_extend_class.pl

@@ -7,14 +7,15 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
-if ($Self->{v3}) {
-    compile (
-	     make_flags => "CPPFLAGS_ADD=-I$Self->{t_dir}",
-	     );
-    execute (
-	     check_finished=>1,
-	     );
-}
+$Self->{vlt} or $Self->skip("Verilator only test");
+
+compile (
+    make_flags => "CPPFLAGS_ADD=-I$Self->{t_dir}",
+    );
+
+execute (
+    check_finished=>1,
+    );
 
 ok(1);
 1;

test_regress/t/t_flag_bboxsys.pl

@@ -7,13 +7,15 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-	 v_flags2 => ["--bbox-sys"],
-	 ) if $Self->{v3};
+	 verilator_flags2 => ["--bbox-sys"],
+	 );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_flag_nomod_bad.pl

@@ -7,13 +7,15 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>$Self->{v3},
 	 expect=>
 '%Error: No top level module found
 %Error: Exiting due to',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_flag_skipidentical.pl

@@ -7,7 +7,9 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
-if ($Self->{v3}) {
+$Self->{vlt} or $Self->skip("Verilator only test");
+
+{
     compile ();
 
     my $outfile = "$Self->{obj_dir}/V".$Self->{name}.".cpp";

test_regress/t/t_flag_topmod2_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--top-module a "],
 	 fails=>$Self->{v3},
@@ -14,7 +16,7 @@ compile (
 	 expect=>
 '%Error: Specified --top-module \'a\' isn.t at the top level, it.s under another cell.
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_flag_topmodule.pl

@@ -7,13 +7,15 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--top-module b "],
-	 ) if $Self->{v3};
+	 );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_flag_topmodule_bad.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_flag_topmodule.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 fails=>$Self->{v3},
 	 nc=>0,  # Need to get it not to give the prompt
@@ -16,7 +18,7 @@ compile (
 '%Error-MULTITOP: t/t_flag_topmodule.v:\d+: Unsupported: Multiple top level modules: .*
 %Error-MULTITOP: t/t_flag_topmodule.v:\d+: Fix, or use --top-module option to select which you want.
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_flag_topmodule_bad2.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_flag_topmodule.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 fails=>$Self->{v3},
 	 v_flags2 => ["--top-module notfound"],
@@ -16,7 +18,7 @@ compile (
 	 expect=>
 '%Error: Specified --top-module \'notfound\' was not found in design.
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_flag_topmodule_inline.pl

@@ -7,13 +7,15 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--top-module b"],
-	 ) if $Self->{v3};
+	 );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_flag_werror_bad1.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_flag_werror.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>$Self->{v3},
@@ -16,7 +18,7 @@ compile (
 q{%Warning-WIDTH: t/t_flag_werror.v:\d+: Operator ASSIGNW expects 4 bits on the Assign RHS, but Assign RHS.s CONST '6'h2e' generates 6 bits.
 %Warning-WIDTH: Use .* and lint_on around source to disable this message.
 %Error: Exiting due to},
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_flag_wfatal.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_flag_wfatal.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only -Wno-fatal"],
     fails=>0,
@@ -19,7 +21,7 @@ compile (
 q{%Warning-WIDTH: t/t_flag_wfatal.v:\d+: Operator ASSIGNW expects 4 bits on the Assign RHS, but Assign RHS.s CONST '6'h2e' generates 6 bits.
 %Warning-WIDTH: Use .* and lint_on around source to disable this message.
 },
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_func_public.pl

@@ -8,7 +8,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Version 2.0.
 
 compile (
-	 v_flags2 => [$Self->{v3}?'+define+VERILATOR_PUBLIC_TASKS':''],
+	 verilator_flags2 => ['+define+VERILATOR_PUBLIC_TASKS'],
 	 fails => $fail,
 	 );
 

test_regress/t/t_func_rand.pl

@@ -7,15 +7,17 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
-	 v_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
-	 ) if $Self->{v3};
+	 verilator_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
+	 );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_gen_assign.pl

@@ -7,8 +7,10 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_gen_if.pl

@@ -7,8 +7,10 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_inst_tree_inl0_pub1.pl

@@ -13,7 +13,7 @@ compile (
 	 verilator_flags2 => ['+define+NOUSE_INLINE', '+define+USE_PUBLIC', '--stats'],
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     file_grep ($Self->{stats}, qr/Optimizations, Combined CFuncs\s+16/i);
 }
 

test_regress/t/t_leak.pl

@@ -7,14 +7,16 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
-	 v_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
-	 ) if $Self->{v3};
+	 verilator_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
+	 );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+	 );
 ok(1);
 1;

test_regress/t/t_lint_blksync_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only -Wwarn-BLKSEQ -Wwarn-COMBDLY"],
     fails=>1,
@@ -20,7 +22,7 @@ compile (
 %Warning-COMBDLY: \*\*\* See the manual before disabling this,
 %Warning-COMBDLY: else you may end up with different sim results.
 %Error: Exiting due to.*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_blksync_loop.pl

@@ -7,13 +7,15 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-    v_flags2 => ["--lint-only -Wwarn-BLKSEQ -Wwarn-COMBDLY"],
+    verilator_flags2 => ["--lint-only -Wwarn-BLKSEQ -Wwarn-COMBDLY"],
     fails=>0,
     verilator_make_gcc => 0,
     make_top_shell => 0,
     make_main => 0,
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_declfilename.pl

@@ -7,12 +7,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only"],
     verilator_make_gcc => 0,
     make_top_shell => 0,
     make_main => 0,
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_declfilename_bad.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_lint_declfilename.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only -Wall"],
     fails=>1,
@@ -19,7 +21,7 @@ compile (
 '%Warning-DECLFILENAME: t/t_lint_declfilename.v:6: Filename \'t_lint_declfilename\' does not match MODULE name: t
 %Warning-DECLFILENAME: Use .* to disable this message.
 %Error: Exiting due to.*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_defparam.pl

@@ -7,12 +7,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only"],
     verilator_make_gcc => 0,
     make_top_shell => 0,
     make_main => 0,
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_defparam_bad.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_lint_defparam.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only -Wwarn-style -Wno-DECLFILENAME"],
     fails=>1,
@@ -19,7 +21,7 @@ compile (
 '%Warning-DEFPARAM: t/t_lint_defparam.v:\d+: Suggest replace defparam with Verilog 2001 #\(.P\(...etc...\)\)
 %Warning-DEFPARAM: Use .* to disable this message.
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_ifdepth_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only -Wall -Wno-DECLFILENAME --if-depth 10"],
     fails=>1,
@@ -17,7 +19,7 @@ compile (
 '%Warning-IFDEPTH: t/t_lint_ifdepth_bad.v:\d+: Deep \'if\' statement; suggest unique/priority to avoid slow logic
 %Warning-IFDEPTH: Use .* to disable this message.
 %Error: Exiting due to.*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_implicit.pl

@@ -7,9 +7,11 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-	 v_flags2 => ["-Wno-IMPLICIT"],
-	 ) if $Self->{v3};
+    verilator_flags2 => ["-Wno-IMPLICIT"],
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_implicit_bad.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_lint_implicit.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only -Wwarn-IMPLICIT"],
 	 fails=>1,
@@ -19,7 +21,7 @@ compile (
 %Warning-IMPLICIT: t/t_lint_implicit.v:\d+: Signal definition not found, creating implicitly: dummy1
 %Warning-IMPLICIT: t/t_lint_implicit.v:\d+: Signal definition not found, creating implicitly: dummy2
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_lint_implicit_def_bad.pl

@@ -7,15 +7,17 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-	 v_flags2 => ["--lint-only -Wall -Wno-DECLFILENAME"],
+	 verilator_flags2 => ["--lint-only -Wall -Wno-DECLFILENAME"],
 	 fails=>1,
 	 expect=>
 '%Warning-IMPLICIT: t/t_lint_implicit_def_bad.v:\d+: Signal definition not found, creating implicitly: imp_warn
 %Warning-IMPLICIT: Use "/\* verilator lint_off IMPLICIT \*/" and lint_on around source to disable this message.
 %Error: t/t_lint_implicit_def_bad.v:\d+: Signal definition not found, and implicit disabled with `default_nettype: imp_err
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_lint_incabspath.pl

@@ -7,12 +7,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-    v_flags2 => ["--lint-only"],
+    verilator_flags2 => ["--lint-only"],
     verilator_make_gcc => 0,
     make_top_shell => 0,
     make_main => 0,
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_incabspath_bad.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_lint_incabspath.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only -Wall -Wno-DECLFILENAME"],
     fails=>1,
@@ -19,7 +21,7 @@ compile (
 '%Warning-INCABSPATH: t/t_lint_incabspath.v:\d+: Suggest `include with absolute path be made relative, and use \+include: /dev/null
 %Warning-INCABSPATH: Use .* to disable this message.
 %Error: Exiting due to.*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_once_bad.pl

@@ -7,10 +7,12 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
-	 v_flags2 => ["--lint-only -Wwarn-UNUSED"],
+	 verilator_flags2 => ["--lint-only -Wwarn-UNUSED"],
 	 verilator_make_gcc => 0,
 	 fails=>1,
 	 expect=>
@@ -18,7 +20,7 @@ compile (
 %Warning-UNUSED: Use .* to disable this message.
 %Warning-UNUSED: t/t_lint_once_bad.v:\d+: Signal is not driven, nor used: unus2
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_lint_only.pl

@@ -7,12 +7,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
 	 v_flags2 => ["--lint-only"],
 	 verilator_make_gcc => 0,
-	 ) if $Self->{v3};
+	 );
 
 foreach my $file (glob("$Self->{obj_dir}/*t_lint_only*")) {
     next if $file =~ /simx_compile.log/;  # Made by driver.pl, not Verilator

test_regress/t/t_lint_pindup_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only"],
     fails=>1,
@@ -22,7 +24,7 @@ compile (
 %Error: t/t_lint_pindup_bad.v:\d+: Duplicate pin connection: P
 %Error: t/t_lint_pindup_bad.v:\d+: ... Location of original pin connection
 %Error: Exiting due to.*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_realcvt_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
@@ -17,7 +19,7 @@ compile (
 '%Warning-REALCVT: t/t_lint_realcvt_bad.v:\d+: Implicit conversion of real to integer
 %Warning-REALCVT: Use .* to disable this message.
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_restore_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>1,
@@ -14,7 +16,7 @@ compile (
 q{.*%Warning-WIDTH: t/t_lint_restore_bad.v:\d+: Operator ASSIGN expects 5 bits on the Assign RHS, but Assign RHS's CONST '64'h1' generates 64 bits.
 %Warning-WIDTH: Use .*
 %Error: Exiting due to.*},
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_setout_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only"],
     fails=>1,
@@ -16,7 +18,7 @@ compile (
     expect=>
 '%Error: t/t_lint_setout_bad.v:\d+: Output port is connected to a constant pin, electrical short
 .*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_setout_bad_noinl.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_lint_setout_bad.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only -Oi"],
     fails=>1,
@@ -18,7 +20,7 @@ compile (
     expect=>
 '%Error: t/t_lint_setout_bad.v:\d+: Output port is connected to a constant pin, electrical short
 .*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_syncasyncnet_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only -Wall -Wno-DECLFILENAME --if-depth 10"],
     fails=>1,
@@ -19,7 +21,7 @@ compile (
 %Warning-SYNCASYNCNET: t/t_lint_syncasyncnet_bad.v:\d+: ... Location of async usage
 %Warning-SYNCASYNCNET: t/t_lint_syncasyncnet_bad.v:\d+: ... Location of sync usage
 %Error: Exiting due to.*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_unused_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only --bbox-sys -Wall -Wno-DECLFILENAME"],
     fails=>1,
@@ -22,7 +24,7 @@ compile (
 %Warning-UNUSED: t/t_lint_unused_bad.v:\d+: Bits of signal are not used: mixed\[2\]
 %Warning-UNDRIVEN: t/t_lint_unused_bad.v:\d+: Bits of signal are not driven: mixed\[1\]
 %Error: Exiting due to.*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_width.pl

@@ -7,12 +7,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 make_top_shell => 0,
 	 make_main => 0,
 	 verilator_make_gcc => 0,
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_lint_width_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>1,
@@ -14,7 +16,7 @@ compile (
 q{.*%Warning-WIDTH: t/t_lint_width_bad.v:\d+: Operator ASSIGNW expects 5 bits on the Assign RHS, but Assign RHS's VARREF 'in' generates 4 bits.
 %Warning-WIDTH: Use .*
 %Error: Exiting due to.*},
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_math_imm2.pl

@@ -12,7 +12,7 @@ $Self->skip("Verilator only test") if !$Self->{vlt};
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
-	 v_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
+	 verilator_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
 	 );
 
 execute (

test_regress/t/t_math_svl.pl

@@ -7,8 +7,10 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-	 ) if $Self->{v3};
+    );
 
 execute (
 	 check_finished=>1,
@@ -16,7 +18,7 @@ execute (
 	 expect=>
 '\*-\* All Finished \*-\*
 Goodbye world, at cycle \d+.*',
-     ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_mem_multidim_Ox.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_mem_multidim.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--Ox':''],
+	 verilator_flags2 => ['--Ox'],
 	 );
 
 execute (

test_regress/t/t_mem_multidim_trace.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_mem_multidim.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--sp --trace':''],
+	 verilator_flags2 => ['--sp --trace'],
 	 );
 
 execute (

test_regress/t/t_mem_packed_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 verilator_flags2 => ["--lint-only"],
 	 fails=>1,
@@ -16,7 +18,7 @@ compile (
 %Error: t/t_mem_packed_bad.v:\d+: Unsupported: Assignment between packed arrays of different dimensions
 %Error: t/t_mem_packed_bad.v:\d+: Unsupported: Assignment between packed arrays of different dimensions
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_mem_shift.pl

@@ -11,7 +11,7 @@ compile (
 	 verilator_flags2 => ["--stats"],
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     file_grep ($Self->{stats}, qr/Optimizations, Delayed shared-sets\s+14/i);
 }
 

test_regress/t/t_mem_slice_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>1,
@@ -19,7 +21,7 @@ compile (
 %Error: t/t_mem_slice_bad.v:\d+: Slices of arrays in assignments must have the same unpacked dimensions
 %Error: t/t_mem_slice_bad.v:\d+: Slices of arrays in assignments must have the same unpacked dimensions
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_mem_slice_conc_bad.pl

@@ -7,10 +7,12 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>1,
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_mem_slot.pl

@@ -7,14 +7,17 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
-	 v_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
-	 ) if $Self->{v3};
+	 verilator_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
+    );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+    );
+
 ok(1);
 1;

test_regress/t/t_param_circ_bad.pl

@@ -7,6 +7,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
     v_flags2 => ["--lint-only"],
     fails=>1,
@@ -16,7 +18,7 @@ compile (
     expect=>
 '%Error: t/t_param_circ_bad.v:\d+: Variable\'s initial value is circular: X
 %Error: Exiting due to.*',
-    ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_pipe_exit_bad.pl

@@ -7,22 +7,20 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->skip("Verilator only test") if !$Self->{vlt};
+
 top_filename("t/t_pipe_filter.v");
 
-if (!$Self->{v3}) {
-    ok(1);
-} else {
-    compile (
-	v_flags2 => ['-E --pipe-filter \'perl t/t_pipe_exit_bad.pf\' '],
-	verilator_make_gcc=>0,
-	stdout_filename => $stdout_filename,
-	fails=>1,
-	expect=>
+compile (
+    verilator_flags2 => ['-E --pipe-filter \'perl t/t_pipe_exit_bad.pf\' '],
+    verilator_make_gcc=>0,
+    stdout_filename => $stdout_filename,
+    fails=>1,
+    expect=>
 '%Error: t_pipe_exit_bad.pf: Intentional bad exit status...
 %Error: File not found: t/t_pipe_filter.v
 %Error: Exiting due to.*',
-	);
-    ok(1);
-}
+    );
+ok(1);
 
 1;

test_regress/t/t_pipe_filter.pl

@@ -7,18 +7,16 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->skip("Verilator only test") if !$Self->{vlt};
+
 $Self->{golden_out} ||= "t/$Self->{name}.out";
 my $stdout_filename = "$Self->{obj_dir}/$Self->{name}__test.vpp";
 
-if (!$Self->{v3}) {
-    ok(1);
-} else {
-    compile (
-	v_flags2 => ['-E --pipe-filter \'perl t/t_pipe_filter.pf\' '],
-	verilator_make_gcc=>0,
-	stdout_filename => $stdout_filename,
-	);
-    ok(files_identical($stdout_filename, $Self->{golden_out}));
-}
+compile (
+    verilator_flags2 => ['-E --pipe-filter \'perl t/t_pipe_filter.pf\' '],
+    verilator_make_gcc=>0,
+    stdout_filename => $stdout_filename,
+    );
+ok(files_identical($stdout_filename, $Self->{golden_out}));
 
 1;

test_regress/t/t_pp_dupdef.pl

@@ -7,9 +7,11 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
-	 v_flags2 => ["-Wno-REDEFMACRO"],
-	 ) if $Self->{v3};
+    verilator_flags2 => ["-Wno-REDEFMACRO"],
+    );
 
 ok(1);
 1;

test_regress/t/t_pp_dupdef_bad.pl

@@ -9,6 +9,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_pp_dupdef.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>1,
@@ -19,7 +21,7 @@ compile (
 %Warning-REDEFMACRO: t/t_pp_dupdef.v:\d+: Redefining existing define: DUPP, with different value: .*
 %Warning-REDEFMACRO: t/t_pp_dupdef.v:\d+: Previous definition is here, with value: .*
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_pp_misdef_bad.pl

@@ -7,13 +7,15 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 v_flags2 => ["--lint-only"],
 	 fails=>1,
 	 expect=>
 '%Error: t/t_pp_misdef_bad.v:\d+: Define or directive not defined: `NOTDEF
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_preproc.pl

@@ -7,20 +7,19 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 $Self->{golden_out} ||= "t/$Self->{name}.out";
 my $stdout_filename = "$Self->{obj_dir}/$Self->{name}__test.vpp";
 
-if (!$Self->{v3}) {
-    ok(1);
-} else {
-    compile (
-	     v_flags2 => ['-DDEF_A0 -DPREDEF_COMMAND_LINE -E'],
-	     verilator_make_gcc=>0,
-	     stdout_filename => $stdout_filename,
-	     );
-    ok(preproc_check($Self->{top_filename}, $stdout_filename)
-       && files_identical($stdout_filename, $Self->{golden_out}));
-}
+compile (
+    verilator_flags2 => ['-DDEF_A0 -DPREDEF_COMMAND_LINE -E'],
+    verilator_make_gcc=>0,
+    stdout_filename => $stdout_filename,
+    );
+
+ok(preproc_check($Self->{top_filename}, $stdout_filename)
+   && files_identical($stdout_filename, $Self->{golden_out}));
 
 sub preproc_check {
     my $filename1 = shift;

test_regress/t/t_preproc_def09.pl

@@ -7,17 +7,16 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 my $stdout_filename = "$Self->{obj_dir}/$Self->{name}__test.vpp";
 
-if (!$Self->{v3}) {
-    ok(1);
-} else {
-    compile (
-	     v_flags2 => ['-E'],
-	     verilator_make_gcc=>0,
-	     stdout_filename => $stdout_filename,
-	     );
-    ok(files_identical($stdout_filename, "t/$Self->{name}.out"));
-}
+compile (
+    verilator_flags2 => ['-E'],
+    verilator_make_gcc=>0,
+    stdout_filename => $stdout_filename,
+    );
+
+ok(files_identical($stdout_filename, "t/$Self->{name}.out"));
 
 1;

test_regress/t/t_preproc_psl_off.pl

@@ -7,19 +7,18 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 my $stdout_filename = "$Self->{obj_dir}/$Self->{name}__test.vpp";
 
 top_filename("t/t_preproc_psl.v");
 
-if (!$Self->{v3}) {
-    ok(1);
-} else {
-    compile (
-	     v_flags2 => ['-E'],
-	     verilator_make_gcc=>0,
-	     stdout_filename => $stdout_filename,
-	     );
-    ok(files_identical($stdout_filename, "t/$Self->{name}.out"));
-}
+compile (
+    verilator_flags2 => ['-E'],
+    verilator_make_gcc=>0,
+    stdout_filename => $stdout_filename,
+    );
+
+ok(files_identical($stdout_filename, "t/$Self->{name}.out"));
 
 1;

test_regress/t/t_preproc_psl_on.pl

@@ -7,19 +7,18 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 my $stdout_filename = "$Self->{obj_dir}/$Self->{name}__test.vpp";
 
 top_filename("t/t_preproc_psl.v");
 
-if (!$Self->{v3}) {
-    ok(1);
-} else {
-    compile (
-	     v_flags2 => ['-psl -E'],
-	     verilator_make_gcc=>0,
-	     stdout_filename => $stdout_filename,
-	     );
-    ok(files_identical($stdout_filename, "t/$Self->{name}.out"));
-}
+compile (
+    verilator_flags2 => ['-psl -E'],
+    verilator_make_gcc=>0,
+    stdout_filename => $stdout_filename,
+    );
+
+ok(files_identical($stdout_filename, "t/$Self->{name}.out"));
 
 1;

test_regress/t/t_preproc_undefineall.pl

@@ -8,8 +8,8 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Version 2.0.
 
 compile (
-    v_flags2 => ['+define+PREDEF_COMMAND_LINE',
-		 "--lint-only"],
+    v_flags2 => ['+define+PREDEF_COMMAND_LINE'],
+    verilator_flags2 => ["--lint-only"],
     verilator_make_gcc => 0,
     make_top_shell => 0,
     make_main => 0,

test_regress/t/t_psl_basic_cover.pl

@@ -10,7 +10,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_psl_basic.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'--psl --sp --coverage-user':''],
+	 verilator_flags2 => ['--psl --sp --coverage-user'],
 	 );
 
 execute (

test_regress/t/t_select_bad_msb.pl

@@ -7,13 +7,15 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 fails=>1,
 	 expect=>
 '%Warning-LITENDIAN: t/t_select_bad_msb.v:\d+: Little bit endian vector: MSB < LSB of bit range: 0:22
 .*
 %Error: Exiting due to.*',
-	 ) if $Self->{v3};
+	 );
 
 ok(1);
 1;

test_regress/t/t_sys_file_basic.pl

@@ -10,9 +10,9 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 unlink("$Self->{obj_dir}/t_sys_file_basic_test.log");
 
 compile (
-    v_flags2 => ['+incdir+../include',
-		 # Build without cached objects, see bug363
-		 "--exe ../$Self->{main_filename}"],
+    v_flags2 => ['+incdir+../include'],
+    # Build without cached objects, see bug363
+    verilator_flags2 => ["--exe ../$Self->{main_filename}"],
     make_flags=>'MAKE_MAIN=0 VM_PARALLEL_BUILDS=0',
     );
 

test_regress/t/t_trace_ena_cc.pl

@@ -10,14 +10,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_trace_ena.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'-trace':''],
+	 verilator_flags2 => ['-trace'],
 	 );
 
 execute (
 	 check_finished=>1,
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     file_grep     ("$Self->{obj_dir}/V$Self->{name}__Trace__Slow.cpp", qr/c_trace_on\"/x);
     file_grep_not ("$Self->{obj_dir}/V$Self->{name}__Trace__Slow.cpp", qr/_trace_off\"/x);
     file_grep     ("$Self->{obj_dir}/simx.vcd", qr/\$enddefinitions/x);

test_regress/t/t_trace_ena_sc.pl

@@ -10,14 +10,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_trace_ena.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'-trace -sc':''],
+	 verilator_flags2 => ['-trace -sc'],
 	 );
 
 execute (
 	 check_finished=>1,
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     # Note more checks in _cc.pl
     file_grep     ("$Self->{obj_dir}/simx.vcd", qr/\$enddefinitions/x);
 }

test_regress/t/t_trace_ena_sp.pl

@@ -10,14 +10,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_trace_ena.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'-trace -sp':''],
+	 verilator_flags2 => ['-trace -sp'],
 	 );
 
 execute (
 	 check_finished=>1,
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     # Note more checks in _cc.pl
     file_grep     ("$Self->{obj_dir}/simx.vcd", qr/\$enddefinitions/x);
 }

test_regress/t/t_trace_off_cc.pl

@@ -10,14 +10,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_trace_ena.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'-notrace':''],
+	 verilator_flags2 => ['-notrace'],
 	 );
 
 execute (
 	 check_finished=>1,
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     !-r "$Self->{obj_dir}/simx.vcd" or $Self->error("Tracing should be off\n");
 }
 

test_regress/t/t_trace_off_sc.pl

@@ -10,14 +10,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_trace_ena.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'-notrace -sc':''],
+	 verilator_flags2 => ['-notrace -sc'],
 	 );
 
 execute (
 	 check_finished=>1,
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     !-r "$Self->{obj_dir}/simx.vcd" or $Self->error("Tracing should be off\n");
 }
 

test_regress/t/t_trace_off_sp.pl

@@ -10,14 +10,14 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 top_filename("t/t_trace_ena.v");
 
 compile (
-	 v_flags2 => [$Self->{v3}?'-notrace -sp':''],
+	 verilator_flags2 => ['-notrace -sp'],
 	 );
 
 execute (
 	 check_finished=>1,
 	 );
 
-if ($Self->{v3}) {
+if ($Self->{vlt}) {
     !-r "$Self->{obj_dir}/simx.vcd" or $Self->error("Tracing should be off\n");
 }
 

test_regress/t/t_trace_public_func.pl

@@ -9,20 +9,20 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_trace_public.v");
 
-if ($Self->{v3}) {
-    compile (
-	     make_top_shell => 0,
-	     make_main => 0,
-	     v_flags2 => ["-DPUB_FUNC --trace --exe $Self->{t_dir}/$Self->{name}.cpp"],
-	     );
+$Self->{vlt} or $Self->skip("Verilator only test");
 
-    execute (
-	     check_finished=>1,
-	     );
+compile (
+    make_top_shell => 0,
+    make_main => 0,
+    v_flags2 => ["-DPUB_FUNC --trace --exe $Self->{t_dir}/$Self->{name}.cpp"],
+    );
 
-    vcd_identical ("$Self->{obj_dir}/simx.vcd",
-		   "t/t_trace_public.out");
-}
+execute (
+    check_finished=>1,
+    );
+
+vcd_identical ("$Self->{obj_dir}/simx.vcd",
+	       "t/t_trace_public.out");
 
 ok(1);
 1;

test_regress/t/t_trace_public_sig.pl

@@ -9,21 +9,23 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_trace_public.v");
 
-if ($Self->{v3}) {
-    compile (
-	     make_top_shell => 0,
-	     make_main => 0,
-	     v_flags2 => ["--trace --exe $Self->{t_dir}/$Self->{name}.cpp"],
-	     );
+$Self->{vlt} or $Self->skip("Verilator only test");
 
-    execute (
-	     check_finished=>1,
-	     );
+compile (
+    make_top_shell => 0,
+    make_main => 0,
+    v_flags2 => ["--trace --exe $Self->{t_dir}/$Self->{name}.cpp"],
+    );
+
+execute (
+    check_finished=>1,
+    );
+
+vcd_identical ("$Self->{obj_dir}/simx.vcd",
+	       "t/t_trace_public.out");
+
+# vcd_identical doesn't detect "$var a.b;" vs "$scope module a; $var b;"
+file_grep ("$Self->{obj_dir}/simx.vcd", qr/module glbl/i);
 
-    vcd_identical ("$Self->{obj_dir}/simx.vcd",
-		   "t/t_trace_public.out");
-    # vcd_identical doesn't detect "$var a.b;" vs "$scope module a; $var b;"
-    file_grep ("$Self->{obj_dir}/simx.vcd", qr/module glbl/i);
-}
 ok(1);
 1;

test_regress/t/t_tri_gate_bufif0.pl

@@ -9,17 +9,19 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_tri_gate.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
 	 v_flags2 => ['+define+T_BUFIF0',],
 	 make_flags => 'CPPFLAGS_ADD=-DT_BUFIF0',
 	 verilator_flags2 => ["--exe $Self->{t_dir}/t_tri_gate.cpp"],
-	 ) if $Self->{v3};
+    );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_tri_gate_bufif1.pl

@@ -9,17 +9,19 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_tri_gate.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
 	 v_flags2 => ['+define+T_BUFIF1',],
 	 make_flags => 'CPPFLAGS_ADD=-DT_BUFIF1',
 	 verilator_flags2 => ["--exe $Self->{t_dir}/t_tri_gate.cpp"],
-	 ) if $Self->{v3};
+    );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_tri_gate_cond.pl

@@ -9,17 +9,19 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_tri_gate.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
 	 v_flags2 => ['+define+T_COND',],
 	 make_flags => 'CPPFLAGS_ADD=-DT_COND',
 	 verilator_flags2 => ["--exe $Self->{t_dir}/t_tri_gate.cpp"],
-	 ) if $Self->{v3};
+    );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_tri_gate_notif0.pl

@@ -9,17 +9,19 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_tri_gate.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
 	 v_flags2 => ['+define+T_NOTIF0',],
 	 make_flags => 'CPPFLAGS_ADD=-DT_NOTIF0',
 	 verilator_flags2 => ["--exe $Self->{t_dir}/t_tri_gate.cpp"],
-	 ) if $Self->{v3};
+    );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_tri_gate_notif1.pl

@@ -9,17 +9,19 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 
 top_filename("t/t_tri_gate.v");
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
 	 v_flags2 => ['+define+T_NOTIF1',],
 	 make_flags => 'CPPFLAGS_ADD=-DT_NOTIF1',
 	 verilator_flags2 => ["--exe $Self->{t_dir}/t_tri_gate.cpp"],
-	 ) if $Self->{v3};
+    );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;

test_regress/t/t_tri_inout.pl

@@ -7,15 +7,17 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
 
+$Self->{vlt} or $Self->skip("Verilator only test");
+
 compile (
 	 make_top_shell => 0,
 	 make_main => 0,
-	 v_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
-	 ) if $Self->{v3};
+	 verilator_flags2 => ["--exe $Self->{t_dir}/$Self->{name}.cpp"],
+    );
 
 execute (
 	 check_finished=>1,
-	 ) if $Self->{v3};
+    );
 
 ok(1);
 1;