Implement RleBpDecoder::next() using fast bitunpacking

[yingsu00]

This PR implements RldBpDecoder::next(), which will be used to decode repetition levels and definition levels for complex types (ARRAY and MAP). It uses the newly added fast native bit unpacking code in RleBpDecoder.

The microbenchmark with AVX2 enabled shows the new bit unpacking code is up to dozens times faster than previous solutions:

============================================================================
[...]mon/tests/BitPackDecoderBenchmark.cpp     relative  time/iter   iters/s
============================================================================
velox_unpack_fullrows_1_8                                 314.64us     3.18K
legacy_unpack_naive_fullrows_1_8                2.7926%    11.27ms     88.76
legacy_unpack_fast_fullrows_1_8                 8.3402%     3.77ms    265.07
fastpforlib_unpack_fullrows_1_8                  5.585%     5.63ms    177.51
arrow_unpack_fullrows_1_8                       10.285%     3.06ms    326.90
duckdb_unpack_fullrows_1_8                      2.3676%    13.29ms     75.25
----------------------------------------------------------------------------
velox_unpack_fullrows_2_8                                 434.85us     2.30K
legacy_unpack_naive_fullrows_2_8                3.5301%    12.32ms     81.18
legacy_unpack_fast_fullrows_2_8                 12.563%     3.46ms    288.91
fastpforlib_unpack_fullrows_2_8                 9.2229%     4.71ms    212.09
arrow_unpack_fullrows_2_8                       15.439%     2.82ms    355.04
duckdb_unpack_fullrows_2_8                      3.4825%    12.49ms     80.09
----------------------------------------------------------------------------
velox_unpack_fullrows_3_8                                 323.24us     3.09K
legacy_unpack_naive_fullrows_3_8                3.2279%    10.01ms     99.86
legacy_unpack_fast_fullrows_3_8                 9.1099%     3.55ms    281.83
fastpforlib_unpack_fullrows_3_8                 6.8442%     4.72ms    211.74
arrow_unpack_fullrows_3_8                       11.318%     2.86ms    350.16
duckdb_unpack_fullrows_3_8                      2.3649%    13.67ms     73.16
----------------------------------------------------------------------------
velox_unpack_fullrows_4_8                                 356.01us     2.81K
legacy_unpack_naive_fullrows_4_8                3.6289%     9.81ms    101.93
legacy_unpack_fast_fullrows_4_8                 10.344%     3.44ms    290.55
fastpforlib_unpack_fullrows_4_8                 9.7341%     3.66ms    273.42
arrow_unpack_fullrows_4_8                       12.441%     2.86ms    349.44
duckdb_unpack_fullrows_4_8                      2.4215%    14.70ms     68.02
----------------------------------------------------------------------------
velox_unpack_fullrows_5_8                                 358.09us     2.79K
legacy_unpack_naive_fullrows_5_8                3.6498%     9.81ms    101.92
legacy_unpack_fast_fullrows_5_8                 10.219%     3.50ms    285.38
fastpforlib_unpack_fullrows_5_8                 7.6934%     4.65ms    214.84
arrow_unpack_fullrows_5_8                       11.396%     3.14ms    318.24
duckdb_unpack_fullrows_5_8                      2.2256%    16.09ms     62.15
----------------------------------------------------------------------------
velox_unpack_fullrows_6_8                                 429.08us     2.33K
legacy_unpack_naive_fullrows_6_8                4.3034%     9.97ms    100.29
legacy_unpack_fast_fullrows_6_8                 11.773%     3.64ms    274.36
fastpforlib_unpack_fullrows_6_8                 9.8848%     4.34ms    230.37
arrow_unpack_fullrows_6_8                         13.3%     3.23ms    309.96
duckdb_unpack_fullrows_6_8                      2.4617%    17.43ms     57.37
----------------------------------------------------------------------------
velox_unpack_fullrows_7_8                                 472.86us     2.11K
legacy_unpack_naive_fullrows_7_8                4.7892%     9.87ms    101.28
legacy_unpack_fast_fullrows_7_8                 13.528%     3.50ms    286.09
fastpforlib_unpack_fullrows_7_8                  8.671%     5.45ms    183.37
arrow_unpack_fullrows_7_8                       14.401%     3.28ms    304.55
duckdb_unpack_fullrows_7_8                      2.5374%    18.64ms     53.66
----------------------------------------------------------------------------
velox_unpack_fullrows_8_8                                 420.84us     2.38K
legacy_unpack_naive_fullrows_8_8                4.2062%    10.01ms     99.95
legacy_unpack_fast_fullrows_8_8                 12.264%     3.43ms    291.42
fastpforlib_unpack_fullrows_8_8                 12.819%     3.28ms    304.61
arrow_unpack_fullrows_8_8                       11.558%     3.64ms    274.64
duckdb_unpack_fullrows_8_8                      1.7907%    23.50ms     42.55
----------------------------------------------------------------------------
----------------------------------------------------------------------------
velox_unpack_fullrows_1_16                                668.27us     1.50K
legacy_unpack_naive_fullrows_1_16               5.6819%    11.76ms     85.02
legacy_unpack_fast_fullrows_1_16                19.364%     3.45ms    289.76
fastpforlib_unpack_fullrows_1_16                23.448%     2.85ms    350.88
arrow_unpack_fullrows_1_16                       25.77%     2.59ms    385.62
duckdb_unpack_fullrows_1_16                     6.2749%    10.65ms     93.90
----------------------------------------------------------------------------
velox_unpack_fullrows_2_16                                725.07us     1.38K
legacy_unpack_naive_fullrows_2_16               7.1637%    10.12ms     98.80
legacy_unpack_fast_fullrows_2_16                22.684%     3.20ms    312.86
fastpforlib_unpack_fullrows_2_16                30.943%     2.34ms    426.76
arrow_unpack_fullrows_2_16                      27.889%     2.60ms    384.64
duckdb_unpack_fullrows_2_16                      5.935%    12.22ms     81.85
----------------------------------------------------------------------------
velox_unpack_fullrows_3_16                                768.55us     1.30K
legacy_unpack_naive_fullrows_3_16               7.7823%     9.88ms    101.26
legacy_unpack_fast_fullrows_3_16                21.779%     3.53ms    283.38
fastpforlib_unpack_fullrows_3_16                29.173%     2.63ms    379.59
arrow_unpack_fullrows_3_16                      27.444%     2.80ms    357.08
duckdb_unpack_fullrows_3_16                     5.7569%    13.35ms     74.91
----------------------------------------------------------------------------
velox_unpack_fullrows_4_16                                844.47us     1.18K
legacy_unpack_naive_fullrows_4_16               8.5395%     9.89ms    101.12
legacy_unpack_fast_fullrows_4_16                 24.28%     3.48ms    287.51
fastpforlib_unpack_fullrows_4_16                35.308%     2.39ms    418.11
arrow_unpack_fullrows_4_16                       32.53%     2.60ms    385.21
duckdb_unpack_fullrows_4_16                     5.8245%    14.50ms     68.97
----------------------------------------------------------------------------
velox_unpack_fullrows_5_16                                876.32us     1.14K
legacy_unpack_naive_fullrows_5_16               8.9603%     9.78ms    102.25
legacy_unpack_fast_fullrows_5_16                24.301%     3.61ms    277.30
fastpforlib_unpack_fullrows_5_16                28.944%     3.03ms    330.29
arrow_unpack_fullrows_5_16                       28.49%     3.08ms    325.11
duckdb_unpack_fullrows_5_16                     5.3094%    16.50ms     60.59
----------------------------------------------------------------------------
velox_unpack_fullrows_6_16                                986.12us     1.01K
legacy_unpack_naive_fullrows_6_16               8.4883%    11.62ms     86.08
legacy_unpack_fast_fullrows_6_16                26.564%     3.71ms    269.38
fastpforlib_unpack_fullrows_6_16                32.394%     3.04ms    328.50
arrow_unpack_fullrows_6_16                      31.138%     3.17ms    315.76
duckdb_unpack_fullrows_6_16                     4.8514%    20.33ms     49.20
----------------------------------------------------------------------------
velox_unpack_fullrows_7_16                                  1.21ms    828.23
legacy_unpack_naive_fullrows_7_16               11.843%    10.19ms     98.09
legacy_unpack_fast_fullrows_7_16                32.936%     3.67ms    272.79
fastpforlib_unpack_fullrows_7_16                 35.16%     3.43ms    291.20
arrow_unpack_fullrows_7_16                      36.047%     3.35ms    298.55
duckdb_unpack_fullrows_7_16                     6.0844%    19.84ms     50.39
----------------------------------------------------------------------------
velox_unpack_fullrows_8_16                                990.48us     1.01K
legacy_unpack_naive_fullrows_8_16               10.072%     9.83ms    101.69
legacy_unpack_fast_fullrows_8_16                30.115%     3.29ms    304.05
fastpforlib_unpack_fullrows_8_16                41.287%     2.40ms    416.84
arrow_unpack_fullrows_8_16                      34.355%     2.88ms    346.85
duckdb_unpack_fullrows_8_16                     4.7893%    20.68ms     48.35
----------------------------------------------------------------------------
velox_unpack_fullrows_9_16                                  1.20ms    831.97
legacy_unpack_naive_fullrows_9_16               11.855%    10.14ms     98.63
legacy_unpack_fast_fullrows_9_16                30.704%     3.91ms    255.45
fastpforlib_unpack_fullrows_9_16                35.125%     3.42ms    292.23
arrow_unpack_fullrows_9_16                      34.646%     3.47ms    288.24
duckdb_unpack_fullrows_9_16                     5.3386%    22.51ms     44.42
----------------------------------------------------------------------------
velox_unpack_fullrows_10_16                                 1.16ms    863.83
legacy_unpack_naive_fullrows_10_16              11.709%     9.89ms    101.15
legacy_unpack_fast_fullrows_10_16               29.118%     3.98ms    251.54
fastpforlib_unpack_fullrows_10_16                34.09%     3.40ms    294.48
arrow_unpack_fullrows_10_16                     33.373%     3.47ms    288.29
duckdb_unpack_fullrows_10_16                    4.9117%    23.57ms     42.43
----------------------------------------------------------------------------
velox_unpack_fullrows_11_16                                 1.40ms    714.78
legacy_unpack_naive_fullrows_11_16              14.052%     9.96ms    100.44
legacy_unpack_fast_fullrows_11_16                35.24%     3.97ms    251.89
fastpforlib_unpack_fullrows_11_16               38.379%     3.65ms    274.33
arrow_unpack_fullrows_11_16                     39.087%     3.58ms    279.39
duckdb_unpack_fullrows_11_16                    5.5651%    25.14ms     39.78
----------------------------------------------------------------------------
velox_unpack_fullrows_12_16                                 1.32ms    758.24
legacy_unpack_naive_fullrows_12_16              13.183%    10.00ms     99.96
legacy_unpack_fast_fullrows_12_16               33.508%     3.94ms    254.07
fastpforlib_unpack_fullrows_12_16               39.036%     3.38ms    295.98
arrow_unpack_fullrows_12_16                     36.912%     3.57ms    279.88
duckdb_unpack_fullrows_12_16                    4.9557%    26.61ms     37.58
----------------------------------------------------------------------------
velox_unpack_fullrows_13_16                                 1.61ms    620.98
legacy_unpack_naive_fullrows_13_16              15.984%    10.07ms     99.26
legacy_unpack_fast_fullrows_13_16               36.913%     4.36ms    229.23
fastpforlib_unpack_fullrows_13_16               33.991%     4.74ms    211.08
arrow_unpack_fullrows_13_16                     35.368%     4.55ms    219.63
duckdb_unpack_fullrows_13_16                    3.8358%    41.98ms     23.82
----------------------------------------------------------------------------
velox_unpack_fullrows_14_16                                 1.84ms    544.93
legacy_unpack_naive_fullrows_14_16              15.291%    12.00ms     83.32
legacy_unpack_fast_fullrows_14_16                40.69%     4.51ms    221.73
fastpforlib_unpack_fullrows_14_16               38.806%     4.73ms    211.46
arrow_unpack_fullrows_14_16                     48.812%     3.76ms    265.99
duckdb_unpack_fullrows_14_16                    5.3427%    34.35ms     29.11
----------------------------------------------------------------------------
velox_unpack_fullrows_15_16                                 1.64ms    610.46
legacy_unpack_naive_fullrows_15_16              16.487%     9.94ms    100.64
legacy_unpack_fast_fullrows_15_16               39.442%     4.15ms    240.78
fastpforlib_unpack_fullrows_15_16                 40.7%     4.02ms    248.46
arrow_unpack_fullrows_15_16                      33.76%     4.85ms    206.09
duckdb_unpack_fullrows_15_16                    4.3563%    37.60ms     26.59
----------------------------------------------------------------------------
velox_unpack_fullrows_16_16                                 1.33ms    750.01
legacy_unpack_naive_fullrows_16_16              13.689%     9.74ms    102.67
legacy_unpack_fast_fullrows_16_16               31.838%     4.19ms    238.79
fastpforlib_unpack_fullrows_16_16               59.941%     2.22ms    449.57
arrow_unpack_fullrows_16_16                     42.795%     3.12ms    320.97
duckdb_unpack_fullrows_16_16                    4.1505%    32.12ms     31.13
----------------------------------------------------------------------------
----------------------------------------------------------------------------
velox_unpack_fullrows_1_32                                  1.67ms    598.18
legacy_unpack_naive_fullrows_1_32                 17.4%     9.61ms    104.08
legacy_unpack_fast_fullrows_1_32                52.314%     3.20ms    312.93
lemirebmi_unpack_fullrows_1_32                  102.83%     1.63ms    615.08
fastpforlib_unpack_fullrows_1_32                64.787%     2.58ms    387.54
arrow_unpack_fullrows_1_32                      79.467%     2.10ms    475.36
duckdb_unpack_fullrows_1_32                      15.51%    10.78ms     92.78
----------------------------------------------------------------------------
velox_unpack_fullrows_2_32                                  1.62ms    618.83
legacy_unpack_naive_fullrows_2_32               16.948%     9.54ms    104.88
legacy_unpack_fast_fullrows_2_32                49.479%     3.27ms    306.19
lemirebmi_unpack_fullrows_2_32                  97.126%     1.66ms    601.05
fastpforlib_unpack_fullrows_2_32                62.528%     2.58ms    386.94
arrow_unpack_fullrows_2_32                       79.57%     2.03ms    492.40
duckdb_unpack_fullrows_2_32                     13.563%    11.91ms     83.93
----------------------------------------------------------------------------
velox_unpack_fullrows_3_32                                  1.64ms    608.80
legacy_unpack_naive_fullrows_3_32               17.116%     9.60ms    104.20
legacy_unpack_fast_fullrows_3_32                50.764%     3.24ms    309.06
lemirebmi_unpack_fullrows_3_32                  96.712%     1.70ms    588.79
fastpforlib_unpack_fullrows_3_32                56.986%     2.88ms    346.94
arrow_unpack_fullrows_3_32                      72.871%     2.25ms    443.64
duckdb_unpack_fullrows_3_32                     13.244%    12.40ms     80.63
----------------------------------------------------------------------------
velox_unpack_fullrows_4_32                                  1.59ms    630.64
legacy_unpack_naive_fullrows_4_32               17.072%     9.29ms    107.66
legacy_unpack_fast_fullrows_4_32                47.828%     3.32ms    301.62
lemirebmi_unpack_fullrows_4_32                   99.26%     1.60ms    625.97
fastpforlib_unpack_fullrows_4_32                63.302%     2.50ms    399.21
arrow_unpack_fullrows_4_32                       82.05%     1.93ms    517.44
duckdb_unpack_fullrows_4_32                     11.724%    13.52ms     73.94
----------------------------------------------------------------------------
velox_unpack_fullrows_5_32                                  1.61ms    622.75
legacy_unpack_naive_fullrows_5_32               17.482%     9.19ms    108.87
legacy_unpack_fast_fullrows_5_32                49.311%     3.26ms    307.08
lemirebmi_unpack_fullrows_5_32                  97.955%     1.64ms    610.01
fastpforlib_unpack_fullrows_5_32                57.233%     2.81ms    356.42
arrow_unpack_fullrows_5_32                      61.216%     2.62ms    381.22
duckdb_unpack_fullrows_5_32                     10.975%    14.63ms     68.35
----------------------------------------------------------------------------
velox_unpack_fullrows_6_32                                  1.70ms    587.36
legacy_unpack_naive_fullrows_6_32                18.31%     9.30ms    107.55
legacy_unpack_fast_fullrows_6_32                50.368%     3.38ms    295.84
lemirebmi_unpack_fullrows_6_32                  78.811%     2.16ms    462.90
fastpforlib_unpack_fullrows_6_32                60.457%     2.82ms    355.10
arrow_unpack_fullrows_6_32                      63.338%     2.69ms    372.02
duckdb_unpack_fullrows_6_32                     10.558%    16.13ms     62.01
----------------------------------------------------------------------------
velox_unpack_fullrows_7_32                                  1.79ms    559.53
legacy_unpack_naive_fullrows_7_32               19.351%     9.24ms    108.27
legacy_unpack_fast_fullrows_7_32                51.346%     3.48ms    287.30
lemirebmi_unpack_fullrows_7_32                  80.374%     2.22ms    449.72
fastpforlib_unpack_fullrows_7_32                 55.92%     3.20ms    312.89
arrow_unpack_fullrows_7_32                      63.181%     2.83ms    353.51
duckdb_unpack_fullrows_7_32                     10.625%    16.82ms     59.45
----------------------------------------------------------------------------
velox_unpack_fullrows_8_32                                  1.87ms    535.47
legacy_unpack_naive_fullrows_8_32               20.321%     9.19ms    108.81
legacy_unpack_fast_fullrows_8_32                58.855%     3.17ms    315.15
lemirebmi_unpack_fullrows_8_32                  83.575%     2.23ms    447.52
fastpforlib_unpack_fullrows_8_32                75.699%     2.47ms    405.35
arrow_unpack_fullrows_8_32                       79.56%     2.35ms    426.02
duckdb_unpack_fullrows_8_32                     10.249%    18.22ms     54.88
----------------------------------------------------------------------------
velox_unpack_fullrows_9_32                                  1.83ms    547.37
legacy_unpack_naive_fullrows_9_32               19.696%     9.28ms    107.81
legacy_unpack_fast_fullrows_9_32                49.922%     3.66ms    273.26
lemirebmi_unpack_fullrows_9_32                  77.424%     2.36ms    423.80
fastpforlib_unpack_fullrows_9_32                52.788%     3.46ms    288.95
arrow_unpack_fullrows_9_32                      57.631%     3.17ms    315.46
duckdb_unpack_fullrows_9_32                     6.8026%    26.86ms     37.24
----------------------------------------------------------------------------
velox_unpack_fullrows_10_32                                 1.98ms    505.99
legacy_unpack_naive_fullrows_10_32              21.702%     9.11ms    109.81
legacy_unpack_fast_fullrows_10_32               51.233%     3.86ms    259.24
lemirebmi_unpack_fullrows_10_32                 81.761%     2.42ms    413.70
fastpforlib_unpack_fullrows_10_32               57.099%     3.46ms    288.92
arrow_unpack_fullrows_10_32                     61.998%     3.19ms    313.71
duckdb_unpack_fullrows_10_32                    5.8895%    33.56ms     29.80
----------------------------------------------------------------------------
velox_unpack_fullrows_11_32                                 2.14ms    467.11
legacy_unpack_naive_fullrows_11_32              23.151%     9.25ms    108.14
legacy_unpack_fast_fullrows_11_32               54.483%     3.93ms    254.50
lemirebmi_unpack_fullrows_11_32                 87.838%     2.44ms    410.30
fastpforlib_unpack_fullrows_11_32               57.859%     3.70ms    270.27
arrow_unpack_fullrows_11_32                     64.048%     3.34ms    299.18
duckdb_unpack_fullrows_11_32                    5.4283%    39.44ms     25.36
----------------------------------------------------------------------------
velox_unpack_fullrows_13_32                                 2.19ms    455.93
legacy_unpack_naive_fullrows_13_32              23.623%     9.28ms    107.70
legacy_unpack_fast_fullrows_13_32               56.653%     3.87ms    258.30
lemirebmi_unpack_fullrows_13_32                 82.813%     2.65ms    377.57
fastpforlib_unpack_fullrows_13_32               59.415%     3.69ms    270.89
arrow_unpack_fullrows_13_32                     62.998%     3.48ms    287.23
duckdb_unpack_fullrows_13_32                    4.1405%    52.97ms     18.88
----------------------------------------------------------------------------
velox_unpack_fullrows_15_32                                 2.36ms    424.53
legacy_unpack_naive_fullrows_15_32              25.049%     9.40ms    106.34
legacy_unpack_fast_fullrows_15_32               59.063%     3.99ms    250.74
lemirebmi_unpack_fullrows_15_32                 73.126%     3.22ms    310.44
fastpforlib_unpack_fullrows_15_32               69.958%     3.37ms    296.99
arrow_unpack_fullrows_15_32                      64.61%     3.65ms    274.29
duckdb_unpack_fullrows_15_32                    3.3573%    70.16ms     14.25
----------------------------------------------------------------------------
velox_unpack_fullrows_17_32                                 2.51ms    398.07
legacy_unpack_naive_fullrows_17_32               26.83%     9.36ms    106.80
legacy_unpack_fast_fullrows_17_32               62.174%     4.04ms    247.50
lemirebmi_unpack_fullrows_17_32                 77.442%     3.24ms    308.28
fastpforlib_unpack_fullrows_17_32               65.746%     3.82ms    261.72
arrow_unpack_fullrows_17_32                     65.935%     3.81ms    262.47
duckdb_unpack_fullrows_17_32                    3.3879%    74.15ms     13.49
----------------------------------------------------------------------------
velox_unpack_fullrows_19_32                                 2.66ms    376.33
legacy_unpack_naive_fullrows_19_32              28.036%     9.48ms    105.51
legacy_unpack_fast_fullrows_19_32               65.007%     4.09ms    244.64
lemirebmi_unpack_fullrows_19_32                 74.725%     3.56ms    281.21
fastpforlib_unpack_fullrows_19_32               74.516%     3.57ms    280.43
arrow_unpack_fullrows_19_32                     66.863%     3.97ms    251.63
duckdb_unpack_fullrows_19_32                    3.5497%    74.86ms     13.36
----------------------------------------------------------------------------
velox_unpack_fullrows_21_32                                 2.78ms    359.64
legacy_unpack_naive_fullrows_21_32               29.23%     9.51ms    105.12
legacy_unpack_fast_fullrows_21_32               63.313%     4.39ms    227.70
lemirebmi_unpack_fullrows_21_32                 65.388%     4.25ms    235.16
fastpforlib_unpack_fullrows_21_32               70.753%     3.93ms    254.46
arrow_unpack_fullrows_21_32                     66.389%     4.19ms    238.76
duckdb_unpack_fullrows_21_32                    3.6014%    77.21ms     12.95
----------------------------------------------------------------------------
velox_unpack_fullrows_24_32                                 2.77ms    360.47
legacy_unpack_naive_fullrows_24_32              29.538%     9.39ms    106.48
legacy_unpack_fast_fullrows_24_32               66.924%     4.15ms    241.24
lemirebmi_unpack_fullrows_24_32                 66.484%     4.17ms    239.65
fastpforlib_unpack_fullrows_24_32               79.805%     3.48ms    287.67
arrow_unpack_fullrows_24_32                     67.181%     4.13ms    242.17
duckdb_unpack_fullrows_24_32                    3.4782%    79.76ms     12.54
----------------------------------------------------------------------------
velox_unpack_fullrows_28_32                                 2.91ms    343.95
legacy_unpack_naive_fullrows_28_32              28.431%    10.23ms     97.79
legacy_unpack_fast_fullrows_28_32               29.677%     9.80ms    102.07
lemirebmi_unpack_fullrows_28_32                 61.152%     4.75ms    210.33
fastpforlib_unpack_fullrows_28_32               68.672%     4.23ms    236.20
arrow_unpack_fullrows_28_32                     62.965%     4.62ms    216.57
duckdb_unpack_fullrows_28_32                    3.3935%    85.68ms     11.67
----------------------------------------------------------------------------
velox_unpack_fullrows_30_32                                 3.03ms    329.76
legacy_unpack_naive_fullrows_30_32              31.058%     9.76ms    102.42
legacy_unpack_fast_fullrows_30_32               29.464%    10.29ms     97.16
lemirebmi_unpack_fullrows_30_32                 62.334%     4.86ms    205.56
fastpforlib_unpack_fullrows_30_32                62.66%     4.84ms    206.63
arrow_unpack_fullrows_30_32                     57.507%     5.27ms    189.64
duckdb_unpack_fullrows_30_32                    3.2237%    94.07ms     10.63
----------------------------------------------------------------------------
velox_unpack_fullrows_32_32                                 3.25ms    307.57
legacy_unpack_naive_fullrows_32_32              34.602%     9.40ms    106.42
legacy_unpack_fast_fullrows_32_32               34.352%     9.46ms    105.66
lemirebmi_unpack_fullrows_32_32                 82.374%     3.95ms    253.36
fastpforlib_unpack_fullrows_32_32               125.33%     2.59ms    385.49
arrow_unpack_fullrows_32_32                     94.107%     3.45ms    289.44
duckdb_unpack_fullrows_32_32                    3.3778%    96.26ms     10.39
----------------------------------------------------------------------------
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_1_8                 72.211%     4.50ms    222.10
legacy_unpack_fast_oddrows_1_8                  183.39%     1.77ms    564.06
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_2_8                 71.969%     4.52ms    221.35
legacy_unpack_fast_oddrows_2_8                  197.83%     1.64ms    608.47
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_4_8                 73.124%     4.45ms    224.91
legacy_unpack_fast_oddrows_4_8                  188.96%     1.72ms    581.19
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_8_8                 72.718%     4.47ms    223.66
legacy_unpack_fast_oddrows_8_8                  189.31%     1.72ms    582.25
----------------------------------------------------------------------------
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_1_16                73.111%     4.45ms    224.87
legacy_unpack_fast_oddrows_1_16                 203.42%     1.60ms    625.67
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_2_16                72.713%     4.47ms    223.64
legacy_unpack_fast_oddrows_2_16                 192.62%     1.69ms    592.45
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_4_16                72.852%     4.46ms    224.07
legacy_unpack_fast_oddrows_4_16                 177.47%     1.83ms    545.83
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_8_16                72.527%     4.48ms    223.07
legacy_unpack_fast_oddrows_8_16                 183.07%     1.78ms    563.07
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_10_16               68.813%     4.72ms    211.65
legacy_unpack_fast_oddrows_10_16                166.27%     1.96ms    511.38
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_12_16               70.133%     4.64ms    215.71
legacy_unpack_fast_oddrows_12_16                171.99%     1.89ms    528.99
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_14_16               65.271%     4.98ms    200.75
legacy_unpack_fast_oddrows_14_16                149.19%     2.18ms    458.86
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_16_16                70.17%     4.63ms    215.82
legacy_unpack_fast_oddrows_16_16                143.44%     2.27ms    441.18
----------------------------------------------------------------------------
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_1_32                72.874%     4.46ms    224.14
legacy_unpack_fast_oddrows_1_32                 202.54%     1.61ms    622.93
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_2_32                72.676%     4.47ms    223.53
legacy_unpack_fast_oddrows_2_32                 201.83%     1.61ms    620.75
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_4_32                72.667%     4.47ms    223.50
legacy_unpack_fast_oddrows_4_32                 191.62%     1.70ms    589.37
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_7_32                72.032%     4.51ms    221.55
legacy_unpack_fast_oddrows_7_32                 171.75%     1.89ms    528.24
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_8_32                 72.08%     4.51ms    221.70
legacy_unpack_fast_oddrows_8_32                 174.44%     1.86ms    536.51
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_13_32               69.433%     4.68ms    213.55
legacy_unpack_fast_oddrows_13_32                150.84%     2.16ms    463.94
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_16_32               70.023%     4.64ms    215.37
legacy_unpack_fast_oddrows_16_32                 144.2%     2.25ms    443.51
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_22_32               53.599%     6.07ms    164.85
legacy_unpack_fast_oddrows_22_32                126.68%     2.57ms    389.62
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_24_32                66.98%     4.85ms    206.01
legacy_unpack_fast_oddrows_24_32                134.59%     2.42ms    413.97
----------------------------------------------------------------------------
legacy_unpack_naive_oddrows_31_32               54.604%     5.95ms    167.94
legacy_unpack_fast_oddrows_31_32                50.654%     6.42ms    155.80
----------------------------------------------------------------------------

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[yingsu00]

@Yuhta @oerling Can you please review this PR? Thanks!

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@Yuhta has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.