v: reduce table.sym() consecutive calls by using new table.sym2()

[felipensp]

This PR aims reduce consecutive calls to table.sym().

_{Huly®: V_0.6-21325}

[spytheman]

On my Linux machine, it was not very conclusive (in most cases the PR version was slower than master, but not by very much):

#0 09:15:40 ^ opt_sym2 ~/code/v>v run .github/workflows/compare_pr_to_master.v 
==================================================================================================
Current git branch: opt_sym2, commit: 01daf62
    Compiling new V executables from PR branch: opt_sym2, commit: 01daf62 ...
CPU: 2.41s      Real: 2.66s     Elapsed: 0:02.66        RAM: 404344KB   ./v -o vnew1 cmd/v
CPU: 2.41s      Real: 2.66s     Elapsed: 0:02.66        RAM: 404396KB   ./vnew1 -o vnew2 cmd/v
CPU: 2.42s      Real: 2.64s     Elapsed: 0:02.64        RAM: 388648KB   ./vnew2 -no-parallel -o vnew cmd/v
CPU: 0.20s      Real: 0.22s     Elapsed: 0:00.22        RAM: 47448KB    ./vnew -no-parallel -o nhw_current.c examples/hello_world.v
CPU: 1.97s      Real: 2.20s     Elapsed: 0:02.20        RAM: 388724KB   ./vnew -no-parallel -o nv_current.c cmd/v
>Size of        nhw_current.c:     460077
>Size of         nv_current.c:    6863765
>Size of                 vnew:   10459216
Switched to branch 'master'
Your branch is up to date with 'origin/master'.
==================================================================================================
    Compiling old V executables from branch: master, commit: e234a2d ...
CPU: 2.43s      Real: 2.65s     Elapsed: 0:02.65        RAM: 404340KB   ./v -o vold1 cmd/v
CPU: 2.44s      Real: 2.65s     Elapsed: 0:02.65        RAM: 404408KB   ./vold1 -o vold2 cmd/v
CPU: 2.39s      Real: 2.63s     Elapsed: 0:02.63        RAM: 388720KB   ./vold2 -no-parallel -o vold cmd/v
CPU: 0.19s      Real: 0.22s     Elapsed: 0:00.22        RAM: 47436KB    ./vold -no-parallel -o ohw_master.c examples/hello_world.v
CPU: 2.00s      Real: 2.20s     Elapsed: 0:02.20        RAM: 388708KB   ./vold -no-parallel -o ov_master.c cmd/v
>Size of         ohw_master.c:     460077
>Size of          ov_master.c:    6858767
>Size of                 vold:   10455528
==================================================================================================
File sizes so far ...
>>>>>> size("  nhw_current.c") - size("   ohw_master.c") =     460077 -     460077 =          0
>>>>>> size("   nv_current.c") - size("    ov_master.c") =    6863765 -    6858767 =       4998
>>>>>> size("           vnew") - size("           vold") =   10459216 -   10455528 =       3688
Switched to branch 'opt_sym2'
==================================================================================================
    Measuring at PR branch: opt_sym2, commit: 01daf62 ...
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1                                                                                  
 >  1         base         112.3ms ± σ:   0.2ms, 112.1ms…112.5ms `./vold -check-syntax           examples/hello_world.v`
    2   +0.6% 1.01x slower 113.0ms ± σ:   0.4ms, 112.4ms…113.3ms `./vnew -check-syntax           examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2                                                                                  
 >  1         base         112.2ms ± σ:   0.1ms, 112.0ms…112.3ms `./vold -check-syntax           examples/hello_world.v`
    2   +0.3% 1.00x slower 112.6ms ± σ:   0.1ms, 112.4ms…112.6ms `./vnew -check-syntax           examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3                                                                                  
 >  1         base         112.3ms ± σ:   0.1ms, 112.1ms…112.4ms `./vold -check-syntax           examples/hello_world.v`
    2   +0.2% 1.00x slower 112.5ms ± σ:   0.2ms, 112.2ms…112.7ms `./vnew -check-syntax           examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1                                                                                  
 >  1         base         164.1ms ± σ:   0.1ms, 164.0ms…164.2ms `./vold -check                  examples/hello_world.v`
    2   +0.6% 1.01x slower 165.1ms ± σ:   0.2ms, 164.9ms…165.2ms `./vnew -check                  examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2                                                                                  
 >  1         base         164.0ms ± σ:   0.0ms, 163.9ms…164.0ms `./vold -check                  examples/hello_world.v`
    2   +0.6% 1.01x slower 165.0ms ± σ:   0.1ms, 164.9ms…165.1ms `./vnew -check                  examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3                                                                                  
 >  1         base         164.0ms ± σ:   0.1ms, 164.0ms…164.1ms `./vold -check                  examples/hello_world.v`
    2   +0.6% 1.01x slower 165.0ms ± σ:   0.1ms, 164.9ms…165.1ms `./vnew -check                  examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1                                                                                  
 >  1         base         223.5ms ± σ:   0.1ms, 223.3ms…223.5ms `./vold -no-parallel -o ohw.c   examples/hello_world.v`
    2   +0.7% 1.01x slower 225.0ms ± σ:   0.0ms, 225.0ms…225.0ms `./vnew -no-parallel -o nhw.c   examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2                                                                                  
 >  1         base         223.5ms ± σ:   0.1ms, 223.4ms…223.5ms `./vold -no-parallel -o ohw.c   examples/hello_world.v`
    2   +0.7% 1.01x slower 225.1ms ± σ:   0.2ms, 225.0ms…225.4ms `./vnew -no-parallel -o nhw.c   examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3                                                                                  
 >  1         base         223.3ms ± σ:   0.1ms, 223.2ms…223.4ms `./vold -no-parallel -o ohw.c   examples/hello_world.v`
    2   +0.8% 1.01x slower 225.2ms ± σ:   0.1ms, 225.0ms…225.2ms `./vnew -no-parallel -o nhw.c   examples/hello_world.v`
>>>>>> size("          nhw.c") - size("          ohw.c") =     460077 -     460077 =          0
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1                                                                                  
 >  1         base         252.1ms ± σ:   0.2ms, 251.8ms…252.3ms `./vold -no-parallel -o ohw.exe examples/hello_world.v`
    2   +0.7% 1.01x slower 253.7ms ± σ:   0.1ms, 253.6ms…253.8ms `./vnew -no-parallel -o nhw.exe examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2                                                                                  
 >  1         base         252.3ms ± σ:   0.2ms, 252.1ms…252.6ms `./vold -no-parallel -o ohw.exe examples/hello_world.v`
    2   +0.5% 1.00x slower 253.5ms ± σ:   0.3ms, 253.2ms…253.8ms `./vnew -no-parallel -o nhw.exe examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3                                                                                  
 >  1         base         252.2ms ± σ:   0.2ms, 251.9ms…252.4ms `./vold -no-parallel -o ohw.exe examples/hello_world.v`
    2   +0.7% 1.01x slower 254.0ms ± σ:   0.1ms, 253.8ms…254.2ms `./vnew -no-parallel -o nhw.exe examples/hello_world.v`
>>>>>> size("        nhw.exe") - size("        ohw.exe") =     726224 -     726224 =          0
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1                                                                                  
    1   -0.3% 1.00x faster 916.7ms ± σ:   0.7ms, 916.0ms…917.6ms `./vnew -check-syntax           cmd/v`
 >  2         base         919.5ms ± σ:   0.4ms, 919.0ms…919.9ms `./vold -check-syntax           cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2                                                                                  
    1   -0.3% 1.00x faster 916.7ms ± σ:   0.2ms, 916.5ms…916.9ms `./vnew -check-syntax           cmd/v`
 >  2         base         919.1ms ± σ:   0.1ms, 918.9ms…919.3ms `./vold -check-syntax           cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
    1   -0.3% 1.00x faster 916.3ms ± σ:   0.1ms, 916.1ms…916.5ms `./vnew -check-syntax           cmd/v`
 >  2         base         919.1ms ± σ:   0.2ms, 918.8ms…919.3ms `./vold -check-syntax           cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
 >  1         base         1506.5ms ± σ:   0.4ms, 1506.0ms…1507.1ms `./vold -check                  cmd/v`
    2   +0.2% 1.00x slower 1509.6ms ± σ:   0.0ms, 1509.6ms…1509.7ms `./vnew -check                  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
 >  1         base         1506.6ms ± σ:   0.4ms, 1506.2ms…1507.2ms `./vold -check                  cmd/v`
    2   +0.2% 1.00x slower 1510.0ms ± σ:   0.2ms, 1509.7ms…1510.2ms `./vnew -check                  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
 >  1         base         1506.4ms ± σ:   0.8ms, 1505.3ms…1507.1ms `./vold -check                  cmd/v`
    2   +0.2% 1.00x slower 1508.9ms ± σ:   0.2ms, 1508.7ms…1509.1ms `./vnew -check                  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
 >  1         base         2198.7ms ± σ:   0.5ms, 2198.2ms…2199.4ms `./vold -no-parallel -o ov.c    cmd/v`
    2   +0.4% 1.00x slower 2208.0ms ± σ:   0.5ms, 2207.7ms…2208.7ms `./vnew -no-parallel -o nv.c    cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
 >  1         base         2198.9ms ± σ:   0.2ms, 2198.6ms…2199.3ms `./vold -no-parallel -o ov.c    cmd/v`
    2   +0.4% 1.00x slower 2208.4ms ± σ:   1.0ms, 2207.5ms…2209.8ms `./vnew -no-parallel -o nv.c    cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
 >  1         base         2201.4ms ± σ:   0.3ms, 2201.0ms…2201.8ms `./vold -no-parallel -o ov.c    cmd/v`
    2   +0.3% 1.00x slower 2207.9ms ± σ:   0.7ms, 2207.1ms…2208.7ms `./vnew -no-parallel -o nv.c    cmd/v`
>>>>>> size("           nv.c") - size("           ov.c") =    6863765 -    6863765 =          0
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
 >  1         base         2634.5ms ± σ:   0.2ms, 2634.2ms…2634.8ms `./vold -no-parallel -o ov.exe  cmd/v`
    2   +0.2% 1.00x slower 2639.9ms ± σ:   0.7ms, 2639.3ms…2640.9ms `./vnew -no-parallel -o nv.exe  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
 >  1         base         2632.9ms ± σ:   0.3ms, 2632.5ms…2633.3ms `./vold -no-parallel -o ov.exe  cmd/v`
    2   +0.3% 1.00x slower 2641.3ms ± σ:   1.1ms, 2639.9ms…2642.2ms `./vnew -no-parallel -o nv.exe  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
 >  1         base         2632.7ms ± σ:   0.8ms, 2631.5ms…2633.4ms `./vold -no-parallel -o ov.exe  cmd/v`
    2   +0.4% 1.00x slower 2642.4ms ± σ:   1.1ms, 2640.9ms…2643.2ms `./vnew -no-parallel -o nv.exe  cmd/v`
>>>>>> size("         nv.exe") - size("         ov.exe") =   10459240 -   10459240 =          0
Done. Total time: 600.035140648 s.
==================================================================================================
Final summary for file diff sizes on their own branches:
>>>>>> size("  nhw_current.c") - size("   ohw_master.c") =     460077 -     460077 =          0
>>>>>> size("   nv_current.c") - size("    ov_master.c") =    6863765 -    6858767 =       4998
>>>>>> size("           vnew") - size("           vold") =   10459216 -   10455528 =       3688
==================================================================================================
Final summary for file diff sizes for generated files on the *current* branch:
>>>>>> size("          nhw.c") - size("          ohw.c") =     460077 -     460077 =          0
>>>>>> size("           nv.c") - size("           ov.c") =    6863765 -    6863765 =          0
>>>>>> size("        nhw.exe") - size("        ohw.exe") =     726224 -     726224 =          0
>>>>>> size("         nv.exe") - size("         ov.exe") =   10459240 -   10459240 =          0
#0 09:25:46 ^ opt_sym2 ~/code/v>

[spytheman]

The results on my m1 were also not conclusive:

0[09:06:10]@m1: (opt_sym2) /opt/v $ v run .github/workflows/compare_pr_to_master.v
==================================================================================================
Current git branch: opt_sym2, commit: 7e886f5
    Compiling new V executables from PR branch: opt_sym2, commit: 7e886f5 ...
CPU: 5.46s	Real: 5.29s	Elapsed: 0:05.29	RAM: 388544KB	./v -o vnew1 cmd/v
CPU: 4.97s	Real: 5.16s	Elapsed: 0:05.16	RAM: 387920KB	./vnew1 -o vnew2 cmd/v
CPU: 4.87s	Real: 5.36s	Elapsed: 0:05.36	RAM: 365456KB	./vnew2 -no-parallel -o vnew cmd/v
CPU: 0.10s	Real: 0.41s	Elapsed: 0:00.41	RAM: 41296KB	./vnew -no-parallel -o nhw_current.c examples/hello_world.v
CPU: 1.00s	Real: 1.14s	Elapsed: 0:01.14	RAM: 363552KB	./vnew -no-parallel -o nv_current.c cmd/v
>Size of        nhw_current.c:     460272
>Size of         nv_current.c:    6866160
>Size of                 vnew:    4247384
Switched to branch 'master'
Your branch is up to date with 'origin/master'.
==================================================================================================
    Compiling old V executables from branch: master, commit: e234a2d ...
CPU: 5.43s	Real: 5.23s	Elapsed: 0:05.23	RAM: 390528KB	./v -o vold1 cmd/v
CPU: 4.96s	Real: 5.13s	Elapsed: 0:05.13	RAM: 388032KB	./vold1 -o vold2 cmd/v
CPU: 4.89s	Real: 5.39s	Elapsed: 0:05.39	RAM: 367984KB	./vold2 -no-parallel -o vold cmd/v
CPU: 0.11s	Real: 0.43s	Elapsed: 0:00.43	RAM: 40848KB	./vold -no-parallel -o ohw_master.c examples/hello_world.v
CPU: 1.00s	Real: 1.13s	Elapsed: 0:01.13	RAM: 364976KB	./vold -no-parallel -o ov_master.c cmd/v
>Size of         ohw_master.c:     460272
>Size of          ov_master.c:    6861162
>Size of                 vold:    4247336
==================================================================================================
File sizes so far ...
>>>>>> size("  nhw_current.c") - size("   ohw_master.c") =     460272 -     460272 =          0
>>>>>> size("   nv_current.c") - size("    ov_master.c") =    6866160 -    6861162 =       4998
>>>>>> size("           vnew") - size("           vold") =    4247384 -    4247336 =         48
Switched to branch 'opt_sym2'
==================================================================================================
    Measuring at PR branch: opt_sym2, commit: 7e886f5 ...
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
    1   -0.4% 1.00x faster  58.2ms ± σ:   0.2ms,  58.1ms… 58.5ms `./vnew -check-syntax           examples/hello_world.v`
 >  2         base          58.4ms ± σ:   0.2ms,  58.3ms… 58.7ms `./vold -check-syntax           examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
    1   -0.0% 1.00x ~same~  58.4ms ± σ:   0.2ms,  58.2ms… 58.5ms `./vnew -check-syntax           examples/hello_world.v`
 >  2         base          58.4ms ± σ:   0.1ms,  58.2ms… 58.5ms `./vold -check-syntax           examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
    1   -0.1% 1.00x ~same~  58.1ms ± σ:   0.1ms,  58.0ms… 58.2ms `./vnew -check-syntax           examples/hello_world.v`
 >  2         base          58.1ms ± σ:   0.0ms,  58.1ms… 58.2ms `./vold -check-syntax           examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
 >  1         base          82.9ms ± σ:   0.2ms,  82.7ms… 83.1ms `./vold -check                  examples/hello_world.v`
    2   +0.0% 1.00x ~same~  82.9ms ± σ:   0.1ms,  82.8ms… 83.1ms `./vnew -check                  examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
 >  1         base          82.8ms ± σ:   0.2ms,  82.5ms… 83.0ms `./vold -check                  examples/hello_world.v`
    2   +0.4% 1.00x slower  83.1ms ± σ:   0.1ms,  83.0ms… 83.3ms `./vnew -check                  examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
    1   -0.0% 1.00x ~same~  83.0ms ± σ:   0.1ms,  82.9ms… 83.2ms `./vnew -check                  examples/hello_world.v`
 >  2         base          83.0ms ± σ:   0.2ms,  82.8ms… 83.2ms `./vold -check                  examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
    1   -0.5% 1.00x faster 117.6ms ± σ:   0.4ms, 117.2ms…118.1ms `./vnew -no-parallel -o nhw.c   examples/hello_world.v`
 >  2         base         118.2ms ± σ:   0.5ms, 117.5ms…118.6ms `./vold -no-parallel -o ohw.c   examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
 >  1         base         117.3ms ± σ:   0.1ms, 117.2ms…117.4ms `./vold -no-parallel -o ohw.c   examples/hello_world.v`
    2   +0.9% 1.01x slower 118.4ms ± σ:   0.2ms, 118.3ms…118.6ms `./vnew -no-parallel -o nhw.c   examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
    1   -0.3% 1.00x faster 118.1ms ± σ:   0.1ms, 118.0ms…118.2ms `./vnew -no-parallel -o nhw.c   examples/hello_world.v`
 >  2         base         118.4ms ± σ:   0.1ms, 118.3ms…118.6ms `./vold -no-parallel -o ohw.c   examples/hello_world.v`
>>>>>> size("          nhw.c") - size("          ohw.c") =     460272 -     460272 =          0
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
    1   -0.3% 1.00x faster 418.0ms ± σ:   0.5ms, 417.7ms…418.7ms `./vnew -no-parallel -o nhw.exe examples/hello_world.v`
 >  2         base         419.4ms ± σ:   0.4ms, 419.0ms…419.9ms `./vold -no-parallel -o ohw.exe examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
 >  1         base         422.7ms ± σ:   1.0ms, 421.6ms…424.0ms `./vold -no-parallel -o ohw.exe examples/hello_world.v`
    2   +0.5% 1.01x slower 424.9ms ± σ:   0.5ms, 424.5ms…425.6ms `./vnew -no-parallel -o nhw.exe examples/hello_world.v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
    1   -0.2% 1.00x faster 424.0ms ± σ:   0.2ms, 423.7ms…424.2ms `./vnew -no-parallel -o nhw.exe examples/hello_world.v`
 >  2         base         424.7ms ± σ:   0.1ms, 424.6ms…424.8ms `./vold -no-parallel -o ohw.exe examples/hello_world.v`
>>>>>> size("        nhw.exe") - size("        ohw.exe") =     430056 -     430056 =          0
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
 >  1         base         436.0ms ± σ:   0.5ms, 435.3ms…436.4ms `./vold -check-syntax           cmd/v`
    2   +0.0% 1.00x ~same~ 436.2ms ± σ:   0.2ms, 436.0ms…436.4ms `./vnew -check-syntax           cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
    1   -0.1% 1.00x ~same~ 435.4ms ± σ:   0.4ms, 434.8ms…435.8ms `./vnew -check-syntax           cmd/v`
 >  2         base         435.7ms ± σ:   0.1ms, 435.6ms…435.8ms `./vold -check-syntax           cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
 >  1         base         431.5ms ± σ:   0.3ms, 431.1ms…431.7ms `./vold -check-syntax           cmd/v`
    2   +1.0% 1.01x slower 435.9ms ± σ:   0.3ms, 435.6ms…436.3ms `./vnew -check-syntax           cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
 >  1         base         711.5ms ± σ:   0.2ms, 711.2ms…711.7ms `./vold -check                  cmd/v`
    2   +0.1% 1.00x ~same~ 712.0ms ± σ:   0.6ms, 711.5ms…712.8ms `./vnew -check                  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
    1   -0.0% 1.00x ~same~ 711.0ms ± σ:   0.9ms, 710.0ms…712.3ms `./vnew -check                  cmd/v`
 >  2         base         711.2ms ± σ:   0.4ms, 710.7ms…711.7ms `./vold -check                  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
 >  1         base         710.7ms ± σ:   0.6ms, 710.3ms…711.6ms `./vold -check                  cmd/v`
    2   +0.2% 1.00x slower 711.9ms ± σ:   0.8ms, 710.9ms…712.8ms `./vnew -check                  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
    1   -0.4% 1.00x faster 1138.0ms ± σ:   0.9ms, 1136.7ms…1138.8ms `./vnew -no-parallel -o nv.c    cmd/v`
 >  2         base         1142.8ms ± σ:   2.1ms, 1140.1ms…1145.2ms `./vold -no-parallel -o ov.c    cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
 >  1         base         1135.6ms ± σ:   0.6ms, 1134.9ms…1136.5ms `./vold -no-parallel -o ov.c    cmd/v`
    2   +0.3% 1.00x slower 1139.1ms ± σ:   0.5ms, 1138.5ms…1139.7ms `./vnew -no-parallel -o nv.c    cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
 >  1         base         1136.8ms ± σ:   1.5ms, 1135.4ms…1138.9ms `./vold -no-parallel -o ov.c    cmd/v`
    2   +0.1% 1.00x ~same~ 1137.7ms ± σ:   1.1ms, 1136.2ms…1138.7ms `./vnew -no-parallel -o nv.c    cmd/v`
>>>>>> size("           nv.c") - size("           ov.c") =    6866160 -    6866160 =          0
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  1
 >  1         base         5010.3ms ± σ:  12.5ms, 4992.7ms…5019.5ms `./vold -no-parallel -o ov.exe  cmd/v`
    2   +0.2% 1.00x slower 5022.2ms ± σ:   6.2ms, 5013.7ms…5028.4ms `./vnew -no-parallel -o nv.exe  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  2
    1   -0.4% 1.00x faster 4995.1ms ± σ:  19.0ms, 4978.8ms…5021.8ms `./vnew -no-parallel -o nv.exe  cmd/v`
 >  2         base         5016.2ms ± σ:   6.7ms, 5007.0ms…5023.0ms `./vold -no-parallel -o ov.exe  cmd/v`
Summary after 1 series x 10 runs (%s are relative to first command, or `base`), discard maxs:  7, repeat:  3
    1   -0.2% 1.00x faster 5010.9ms ± σ:   4.8ms, 5004.2ms…5015.4ms `./vnew -no-parallel -o nv.exe  cmd/v`
 >  2         base         5020.4ms ± σ:   6.1ms, 5015.7ms…5029.0ms `./vold -no-parallel -o ov.exe  cmd/v`
>>>>>> size("         nv.exe") - size("         ov.exe") =    4247384 -    4247384 =          0
Done. Total time: 613.22817 s.
==================================================================================================
Final summary for file diff sizes on their own branches:
>>>>>> size("  nhw_current.c") - size("   ohw_master.c") =     460272 -     460272 =          0
>>>>>> size("   nv_current.c") - size("    ov_master.c") =    6866160 -    6861162 =       4998
>>>>>> size("           vnew") - size("           vold") =    4247384 -    4247336 =         48
==================================================================================================
Final summary for file diff sizes for generated files on the *current* branch:
>>>>>> size("          nhw.c") - size("          ohw.c") =     460272 -     460272 =          0
>>>>>> size("           nv.c") - size("           ov.c") =    6866160 -    6866160 =          0
>>>>>> size("        nhw.exe") - size("        ohw.exe") =     430056 -     430056 =          0
>>>>>> size("         nv.exe") - size("         ov.exe") =    4247384 -    4247384 =          0
0[09:16:27]@m1: (opt_sym2) /opt/v $

[spytheman]

With -prod, it is a mixed bag on both linux and macos.

I do not think it is worth the increased complexity and code size.