Nikolas Klauser
|
f7407411a1
|
[libc++] Optimize std::find for segmented iterators (#67224)
```
--------------------------------------------------------------------------
Benchmark old new
--------------------------------------------------------------------------
bm_find<std::deque<char>>/1 6.06 ns 10.6 ns
bm_find<std::deque<char>>/2 15.5 ns 10.6 ns
bm_find<std::deque<char>>/3 19.0 ns 10.6 ns
bm_find<std::deque<char>>/4 20.8 ns 10.6 ns
bm_find<std::deque<char>>/5 22.0 ns 10.6 ns
bm_find<std::deque<char>>/6 23.0 ns 10.5 ns
bm_find<std::deque<char>>/7 24.8 ns 10.7 ns
bm_find<std::deque<char>>/8 25.7 ns 10.6 ns
bm_find<std::deque<char>>/16 28.3 ns 10.6 ns
bm_find<std::deque<char>>/64 44.2 ns 27.0 ns
bm_find<std::deque<char>>/512 133 ns 37.6 ns
bm_find<std::deque<char>>/4096 867 ns 53.1 ns
bm_find<std::deque<char>>/32768 6838 ns 160 ns
bm_find<std::deque<char>>/262144 52897 ns 1495 ns
bm_find<std::deque<char>>/1048576 215621 ns 6077 ns
bm_find<std::deque<short>>/1 6.03 ns 6.28 ns
bm_find<std::deque<short>>/2 15.8 ns 15.8 ns
bm_find<std::deque<short>>/3 20.5 ns 20.3 ns
bm_find<std::deque<short>>/4 21.0 ns 21.0 ns
bm_find<std::deque<short>>/5 23.0 ns 22.1 ns
bm_find<std::deque<short>>/6 22.6 ns 23.0 ns
bm_find<std::deque<short>>/7 23.4 ns 23.7 ns
bm_find<std::deque<short>>/8 24.4 ns 24.9 ns
bm_find<std::deque<short>>/16 26.6 ns 27.2 ns
bm_find<std::deque<short>>/64 43.2 ns 40.9 ns
bm_find<std::deque<short>>/512 124 ns 90.7 ns
bm_find<std::deque<short>>/4096 845 ns 525 ns
bm_find<std::deque<short>>/32768 7273 ns 3194 ns
bm_find<std::deque<short>>/262144 53710 ns 24385 ns
bm_find<std::deque<short>>/1048576 216086 ns 96195 ns
bm_find<std::deque<int>>/1 6.03 ns 10.3 ns
bm_find<std::deque<int>>/2 15.6 ns 10.3 ns
bm_find<std::deque<int>>/3 19.1 ns 10.3 ns
bm_find<std::deque<int>>/4 22.3 ns 10.3 ns
bm_find<std::deque<int>>/5 23.5 ns 10.4 ns
bm_find<std::deque<int>>/6 23.1 ns 10.3 ns
bm_find<std::deque<int>>/7 23.7 ns 10.2 ns
bm_find<std::deque<int>>/8 24.5 ns 10.2 ns
bm_find<std::deque<int>>/16 27.9 ns 26.6 ns
bm_find<std::deque<int>>/64 42.6 ns 32.2 ns
bm_find<std::deque<int>>/512 123 ns 43.0 ns
bm_find<std::deque<int>>/4096 874 ns 93.5 ns
bm_find<std::deque<int>>/32768 7031 ns 751 ns
bm_find<std::deque<int>>/262144 57723 ns 6169 ns
bm_find<std::deque<int>>/1048576 230867 ns 35851 ns
bm_ranges_find<std::deque<char>>/1 5.97 ns 10.6 ns
bm_ranges_find<std::deque<char>>/2 16.0 ns 10.5 ns
bm_ranges_find<std::deque<char>>/3 19.5 ns 10.5 ns
bm_ranges_find<std::deque<char>>/4 21.1 ns 10.6 ns
bm_ranges_find<std::deque<char>>/5 22.8 ns 10.5 ns
bm_ranges_find<std::deque<char>>/6 22.8 ns 10.6 ns
bm_ranges_find<std::deque<char>>/7 23.4 ns 10.8 ns
bm_ranges_find<std::deque<char>>/8 24.1 ns 10.5 ns
bm_ranges_find<std::deque<char>>/16 26.9 ns 10.6 ns
bm_ranges_find<std::deque<char>>/64 50.2 ns 27.2 ns
bm_ranges_find<std::deque<char>>/512 126 ns 38.3 ns
bm_ranges_find<std::deque<char>>/4096 868 ns 53.8 ns
bm_ranges_find<std::deque<char>>/32768 6695 ns 161 ns
bm_ranges_find<std::deque<char>>/262144 54411 ns 1497 ns
bm_ranges_find<std::deque<char>>/1048576 241699 ns 6042 ns
bm_ranges_find<std::deque<short>>/1 6.39 ns 6.31 ns
bm_ranges_find<std::deque<short>>/2 15.8 ns 15.9 ns
bm_ranges_find<std::deque<short>>/3 19.0 ns 19.8 ns
bm_ranges_find<std::deque<short>>/4 20.8 ns 20.9 ns
bm_ranges_find<std::deque<short>>/5 21.8 ns 22.1 ns
bm_ranges_find<std::deque<short>>/6 23.0 ns 23.0 ns
bm_ranges_find<std::deque<short>>/7 23.2 ns 23.9 ns
bm_ranges_find<std::deque<short>>/8 23.7 ns 24.4 ns
bm_ranges_find<std::deque<short>>/16 26.6 ns 26.8 ns
bm_ranges_find<std::deque<short>>/64 43.4 ns 39.7 ns
bm_ranges_find<std::deque<short>>/512 131 ns 90.5 ns
bm_ranges_find<std::deque<short>>/4096 851 ns 523 ns
bm_ranges_find<std::deque<short>>/32768 7370 ns 3166 ns
bm_ranges_find<std::deque<short>>/262144 60778 ns 24814 ns
bm_ranges_find<std::deque<short>>/1048576 229288 ns 99273 ns
bm_ranges_find<std::deque<int>>/1 6.43 ns 10.2 ns
bm_ranges_find<std::deque<int>>/2 16.6 ns 10.2 ns
bm_ranges_find<std::deque<int>>/3 19.6 ns 10.2 ns
bm_ranges_find<std::deque<int>>/4 21.0 ns 10.2 ns
bm_ranges_find<std::deque<int>>/5 21.9 ns 10.4 ns
bm_ranges_find<std::deque<int>>/6 22.7 ns 10.2 ns
bm_ranges_find<std::deque<int>>/7 23.9 ns 10.2 ns
bm_ranges_find<std::deque<int>>/8 23.8 ns 10.2 ns
bm_ranges_find<std::deque<int>>/16 27.2 ns 27.1 ns
bm_ranges_find<std::deque<int>>/64 42.4 ns 32.4 ns
bm_ranges_find<std::deque<int>>/512 122 ns 43.0 ns
bm_ranges_find<std::deque<int>>/4096 895 ns 93.7 ns
bm_ranges_find<std::deque<int>>/32768 6890 ns 756 ns
bm_ranges_find<std::deque<int>>/262144 54025 ns 6102 ns
bm_ranges_find<std::deque<int>>/1048576 221558 ns 32783 ns
```
|
2023-12-15 17:10:16 +01:00 |
|
Nikolas Klauser
|
8670b53e11
|
[libc++] Optimize ranges::find for vector<bool>
Benchmark results:
```
----------------------------------------------------------------
Benchmark old new
----------------------------------------------------------------
bm_vector_bool_ranges_find/1 5.64 ns 6.08 ns
bm_vector_bool_ranges_find/2 16.5 ns 6.03 ns
bm_vector_bool_ranges_find/3 20.3 ns 6.07 ns
bm_vector_bool_ranges_find/4 22.2 ns 6.08 ns
bm_vector_bool_ranges_find/5 23.5 ns 6.05 ns
bm_vector_bool_ranges_find/6 24.4 ns 6.10 ns
bm_vector_bool_ranges_find/7 26.7 ns 6.10 ns
bm_vector_bool_ranges_find/8 25.0 ns 6.08 ns
bm_vector_bool_ranges_find/16 27.9 ns 6.07 ns
bm_vector_bool_ranges_find/64 44.5 ns 5.35 ns
bm_vector_bool_ranges_find/512 243 ns 25.7 ns
bm_vector_bool_ranges_find/4096 1858 ns 35.6 ns
bm_vector_bool_ranges_find/32768 15461 ns 93.5 ns
bm_vector_bool_ranges_find/262144 126462 ns 571 ns
bm_vector_bool_ranges_find/1048576 497736 ns 2272 ns
```
Reviewed By: #libc, Mordante
Spies: var-const, Mordante, libcxx-commits
Differential Revision: https://reviews.llvm.org/D156039
|
2023-08-01 10:28:25 -07:00 |
|
Nikolas Klauser
|
1fd08edd58
|
[libc++] Forward to std::{,w}memchr in std::find
Reviewed By: #libc, ldionne
Spies: Mordante, libcxx-commits, ldionne, mikhail.ramalho
Differential Revision: https://reviews.llvm.org/D144394
|
2023-05-25 07:59:50 -07:00 |
|