2bit rank perf

gistfile1.txt

```
n = 100000
Ranker                                                         bits |     1t               |     6t               |
                                                                    | latncy   loop stream | latncy   loop stream |
Ranker<Plain128, TrivialSB, WideSimdCount2, false>            4.00b |   13.2    3.4    3.6 |    2.3    0.9    0.7 |
Ranker<Plain256, TrivialSB, SimdCountSlice, false>            3.01b |   18.6    8.8    9.6 |    3.8    1.6    1.7 |
Ranker<Plain512, TrivialSB, SimdCountSlice, false>            2.51b |   20.9   13.6   14.4 |    3.5    2.2    2.3 |
Ranker<Plain512, SB8, U128Popcnt3, true>                      2.26b |   24.3   21.5   21.4 |    4.2    3.4    3.5 |
Ranker<Plain512, SB8, SimdCountSlice, false>                  2.26b |   23.4   18.4   19.0 |    4.1    3.1    3.2 |
Ranker<FullBlock, NoSB, U64PopcntSlice, false>                4.01b |   21.0   12.7   12.9 |    3.5    2.1    2.2 |
Ranker<QuartBlock, NoSB, SimdCount7, false>                   4.01b |   11.1    2.8    2.9 |    1.9    0.5    0.5 |
Ranker<PentaBlock, TrivialSB, SimdCount7, false>              3.21b |   14.0    4.9    5.6 |    2.3    0.8    1.0 |
Ranker<HexaBlock, TrivialSB, WideSimdCount2, false>           2.68b |   15.3    6.9    7.3 |    2.7    1.1    1.2 |
Rank9                                                         2.51b |    4.0    1.7    1.7 |    0.7    0.3    0.6 |
RSQVector<RSSupportPlain>                                     2.27b |    6.9    5.2    5.7 |    1.2    0.9    1.0 |
n = 1000000000
Ranker                                                         bits |     1t               |     6t               |
                                                                    | latncy   loop stream | latncy   loop stream |
Ranker<Plain128, TrivialSB, WideSimdCount2, false>            4.00b |  109.7   27.0   19.7 |   44.2   11.3   14.2 |
Ranker<Plain256, TrivialSB, SimdCountSlice, false>            3.00b |  118.7   50.2   14.8 |   45.0   21.9   11.3 |
Ranker<Plain512, TrivialSB, SimdCountSlice, false>            2.50b |  124.8   71.4   15.8 |   63.9   21.9   11.3 |
Ranker<Plain512, SB8, U128Popcnt3, true>                      2.25b |  119.9  102.0   21.9 |   63.5   45.2    6.6 |
Ranker<Plain512, SB8, SimdCountSlice, false>                  2.25b |  119.6   84.9   19.6 |   47.1   29.1    7.4 |
Ranker<FullBlock, NoSB, U64PopcntSlice, false>                4.00b |  113.7   57.8   13.4 |   54.3   19.6    7.5 |
Ranker<QuartBlock, NoSB, SimdCount7, false>                   4.00b |   98.9   20.7    8.9 |   47.4    8.2    8.0 |
Ranker<PentaBlock, TrivialSB, SimdCount7, false>              3.20b |  107.0   28.5    7.8 |   53.8    9.9    7.7 |
Ranker<HexaBlock, TrivialSB, WideSimdCount2, false>           2.67b |  105.6   35.5    9.0 |   43.8   11.2    5.2 |
Rank9                                                         2.50b |   92.5   17.6   17.5 |   40.3    8.9    8.6 |
RSQVector<RSSupportPlain>                                     2.25b |  106.3   44.7   11.1 |   50.8   15.2    8.4 |
```


processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 25
model           : 1
model name      : AMD EPYC 7313 16-Core Processor
stepping        : 1
microcode       : 0xa0011de
cpu MHz         : 2994.336
cache size      : 512 KB
physical id     : 0
siblings        : 16
core id         : 0
cpu cores       : 16
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 16
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid
extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw i
bs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 invpcid_single hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 invpcid cqm rdt_a rdseed adx
smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr wbnoinvd amd_ppin brs arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean
 flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload vgif v_spec_ctrl umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca
bugs            : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass srso
bogomips        : 5988.67
TLB size        : 2560 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 48 bits physical, 48 bits virtual
power management: ts ttp tm hwpstate cpb eff_freq_ro [13] [14]