1522 Commits

Author	SHA1	Message	Date
A. Jiang	ddfd89ae44	[libc++][Docs] Mark P1353R0 as complete (#123020) ... Library feature-test macros added by P1353R0 are already implemented. - `__cpp_lib_destroying_delete` was added by ae02e8944807c7b611ca3645a983c62d464f27a4 (https://reviews.llvm.org/D55840) in LLVM 9. - `__cpp_lib_three_way_comparison` was added by #91515 in LLVM 19.	2025-01-19 23:00:27 +08:00
Louis Dionne	df3ba91d83	[libc++] Clarify the release note for uncaught_exception removal and deprecation (#123118) ... The release note did not clearly mention that std::uncaught_exception had been removed in C++20.	2025-01-16 10:42:18 -05:00
Peng Liu	0298e58c7d	[libc++] Optimize input_iterator-pair insert for std::vector (#113768) ... As a follow-up to #113852, this PR optimizes the performance of the `insert(const_iterator pos, InputIt first, InputIt last)` function for `input_iterator`-pair inputs in `std::vector` for cases where reallocation occurs during insertion. Additionally, this optimization enhances exception safety by replacing the traditional `try-catch` mechanism with a modern exception guard for the `insert` function. The optimization targets cases where insertion trigger reallocation. In scenarios without reallocation, the implementation remains unchanged. Previous implementation ----------------------- The previous implementation of `insert` is inefficient in reallocation scenarios because it performs the following steps separately: - `reserve()`: This leads to the first round of relocating old elements to new memory; - `rotate()`: This leads to the second round of reorganizing the existing elements; - Move-forward: Moves the elements after the insertion position to their final positions. - Insert: performs the actual insertion. This approach results in a lot of redundant operations, requiring the elements to undergo three rounds of relocations/reorganizations to be placed in their final positions. Proposed implementation ----------------------- The proposed implementation jointly optimize the above 4 steps in the previous implementation such that each element is placed in its final position in just one round of relocation. Specifically, this optimization reduces the total cost from 2 relocations + 1 std::rotate call to just 1 relocation, without needing to call `std::rotate`, thereby significantly improving overall performance.	2025-01-14 11:40:29 -05:00
PaulXiCao	438e2ccd4a	[libc++] Make std::stable_sort constexpr friendly (#110320) ... Implementing `constexpr std::stable_sort`. This is part of P2562R1, tracked via issue #105360. Closes #119394 Co-authored-by: A. Jiang <de34@live.cn> Co-authored-by: Louis Dionne <ldionne.2@gmail.com>	2025-01-14 10:24:35 -05:00
A. Jiang	019a902ac6	[libc++] Deprecate extension packaged_task::result_type (#122600) ... This extension is questionable and non-conforming. Perhaps we should deprecate and then remove it. Towards #112856.	2025-01-13 09:12:25 -05:00
Jakub Mazurkiewicz	c91d805e66	[libc++] Implement std::not_fn<NTTP> (#86133) ... Implement `std::not_fn<NTTP>` from "P2714R1 Bind front and back to NTTP callables".	2025-01-10 14:14:14 -05:00
A. Jiang	85ca551763	[libc++][chrono] Entirely remove relational operators for std::chrono::weekday (#122428) ... Follows-up #98730.	2025-01-10 13:49:52 +01:00
Louis Dionne	2c6ed5f7ee	[libc++][NFC] Remove trailing whitespace from release notes	2025-01-09 14:26:49 -05:00
Дмитрий Изволов	69b54c1a05	[libcxx][algorithm] Optimize std::stable_sort via radix sort algorithm (#104683) ... The radix sort (LSD) algorithm allows to speed up std::stable_sort dramatically in case we sort integers. The speed up varies from a relatively small to x10 times, depending on type of sorted elements and the initial state of the sorted array. ``` Running ./libcxx/test/benchmarks/stable_sort.bench.out Run on (12 X 2600 MHz CPU s) CPU Caches: L1 Data 32 KiB L1 Instruction 32 KiB L2 Unified 256 KiB (x6) L3 Unified 12288 KiB Load Average: 3.48, 3.38, 3.08 --------------------------------------------------------------------------- Benchmark After Before --------------------------------------------------------------------------- BM_StableSort_int8_Random_1 3.39 ns 3.58 ns BM_StableSort_int8_Random_4 21.1 ns 21.9 ns BM_StableSort_int8_Random_16 142 ns 147 ns BM_StableSort_int8_Random_64 893 ns 903 ns BM_StableSort_int8_Random_256 409 ns 5810 ns BM_StableSort_int8_Random_1024 1235 ns 29973 ns BM_StableSort_int8_Random_4096 4410 ns 141880 ns BM_StableSort_int8_Random_16384 18044 ns 620540 ns BM_StableSort_int8_Random_65536 144030 ns 2592013 ns BM_StableSort_int8_Random_262144 858350 ns 10935814 ns BM_StableSort_int8_Random_524288 2929988 ns 27060729 ns BM_StableSort_int8_Random_1048576 6058292 ns 49622720 ns BM_StableSort_int8_Ascending_1 3.42 ns 3.92 ns BM_StableSort_int8_Ascending_4 5.86 ns 8.08 ns BM_StableSort_int8_Ascending_16 10.6 ns 12.0 ns BM_StableSort_int8_Ascending_64 28.9 ns 30.6 ns BM_StableSort_int8_Ascending_256 415 ns 391 ns BM_StableSort_int8_Ascending_1024 1666 ns 2309 ns BM_StableSort_int8_Ascending_4096 7748 ns 12269 ns BM_StableSort_int8_Ascending_16384 40588 ns 60181 ns BM_StableSort_int8_Ascending_65536 178843 ns 298221 ns BM_StableSort_int8_Ascending_262144 919959 ns 1402692 ns BM_StableSort_int8_Ascending_524288 2397397 ns 3036984 ns BM_StableSort_int8_Ascending_1048576 5080043 ns 7218581 ns BM_StableSort_int8_Descending_1 3.44 ns 3.53 ns BM_StableSort_int8_Descending_4 7.94 ns 8.29 ns BM_StableSort_int8_Descending_16 59.6 ns 57.7 ns BM_StableSort_int8_Descending_64 1051 ns 1027 ns BM_StableSort_int8_Descending_256 422 ns 4718 ns BM_StableSort_int8_Descending_1024 1676 ns 21044 ns BM_StableSort_int8_Descending_4096 7766 ns 64827 ns BM_StableSort_int8_Descending_16384 40230 ns 93981 ns BM_StableSort_int8_Descending_65536 190978 ns 421151 ns BM_StableSort_int8_Descending_262144 1055141 ns 1918927 ns BM_StableSort_int8_Descending_524288 2875115 ns 3809153 ns BM_StableSort_int8_Descending_1048576 5854135 ns 8713690 ns BM_StableSort_int8_SingleElement_1 3.52 ns 3.46 ns BM_StableSort_int8_SingleElement_4 6.25 ns 5.79 ns BM_StableSort_int8_SingleElement_16 10.7 ns 11.4 ns BM_StableSort_int8_SingleElement_64 29.3 ns 30.3 ns BM_StableSort_int8_SingleElement_256 858 ns 380 ns BM_StableSort_int8_SingleElement_1024 3036 ns 2231 ns BM_StableSort_int8_SingleElement_4096 11580 ns 11866 ns BM_StableSort_int8_SingleElement_16384 44956 ns 59621 ns BM_StableSort_int8_SingleElement_65536 182006 ns 297853 ns BM_StableSort_int8_SingleElement_262144 962181 ns 1432857 ns BM_StableSort_int8_SingleElement_524288 2256687 ns 2975707 ns BM_StableSort_int8_SingleElement_1048576 4522556 ns 6949948 ns BM_StableSort_int8_PipeOrgan_1 3.26 ns 3.64 ns BM_StableSort_int8_PipeOrgan_4 6.21 ns 6.58 ns BM_StableSort_int8_PipeOrgan_16 23.7 ns 25.4 ns BM_StableSort_int8_PipeOrgan_64 250 ns 248 ns BM_StableSort_int8_PipeOrgan_256 414 ns 2498 ns BM_StableSort_int8_PipeOrgan_1024 1697 ns 10946 ns BM_StableSort_int8_PipeOrgan_4096 7840 ns 37238 ns BM_StableSort_int8_PipeOrgan_16384 41402 ns 74805 ns BM_StableSort_int8_PipeOrgan_65536 180107 ns 357891 ns BM_StableSort_int8_PipeOrgan_262144 988273 ns 1647296 ns BM_StableSort_int8_PipeOrgan_524288 2547374 ns 3245991 ns BM_StableSort_int8_PipeOrgan_1048576 5128783 ns 7342444 ns BM_StableSort_int8_QuickSortAdversary_1 3.14 ns 4.01 ns BM_StableSort_int8_QuickSortAdversary_4 6.05 ns 7.02 ns BM_StableSort_int8_QuickSortAdversary_16 10.5 ns 11.9 ns BM_StableSort_int8_QuickSortAdversary_64 520 ns 516 ns BM_StableSort_int8_QuickSortAdversary_256 920 ns 386 ns BM_StableSort_int8_QuickSortAdversary_1024 3083 ns 2299 ns BM_StableSort_int8_QuickSortAdversary_4096 11659 ns 12295 ns BM_StableSort_int8_QuickSortAdversary_16384 45721 ns 60931 ns BM_StableSort_int8_QuickSortAdversary_65536 186334 ns 295423 ns BM_StableSort_int8_QuickSortAdversary_262144 946262 ns 1399973 ns BM_StableSort_int8_QuickSortAdversary_524288 2282004 ns 2832266 ns BM_StableSort_int8_QuickSortAdversary_1048576 4691123 ns 6963253 ns BM_StableSort_uint8_Random_1 3.11 ns 3.44 ns BM_StableSort_uint8_Random_4 21.9 ns 23.1 ns BM_StableSort_uint8_Random_16 154 ns 171 ns BM_StableSort_uint8_Random_64 1000 ns 1051 ns BM_StableSort_uint8_Random_256 402 ns 6498 ns BM_StableSort_uint8_Random_1024 1176 ns 35310 ns BM_StableSort_uint8_Random_4096 4415 ns 164087 ns BM_StableSort_uint8_Random_16384 17849 ns 686769 ns BM_StableSort_uint8_Random_65536 146109 ns 2932051 ns BM_StableSort_uint8_Random_262144 876710 ns 12163988 ns BM_StableSort_uint8_Random_524288 2858089 ns 26458830 ns BM_StableSort_uint8_Random_1048576 5766942 ns 54836214 ns BM_StableSort_uint8_Ascending_1 3.11 ns 3.43 ns BM_StableSort_uint8_Ascending_4 6.18 ns 7.24 ns BM_StableSort_uint8_Ascending_16 14.5 ns 17.0 ns BM_StableSort_uint8_Ascending_64 50.7 ns 59.2 ns BM_StableSort_uint8_Ascending_256 395 ns 536 ns BM_StableSort_uint8_Ascending_1024 1752 ns 2956 ns BM_StableSort_uint8_Ascending_4096 7785 ns 15146 ns BM_StableSort_uint8_Ascending_16384 41442 ns 74136 ns BM_StableSort_uint8_Ascending_65536 180879 ns 354261 ns BM_StableSort_uint8_Ascending_262144 945880 ns 1674256 ns BM_StableSort_uint8_Ascending_524288 2287832 ns 3138581 ns BM_StableSort_uint8_Ascending_1048576 4630290 ns 7296278 ns BM_StableSort_uint8_Descending_1 3.19 ns 3.63 ns BM_StableSort_uint8_Descending_4 9.60 ns 11.5 ns BM_StableSort_uint8_Descending_16 78.3 ns 86.0 ns BM_StableSort_uint8_Descending_64 1265 ns 1308 ns BM_StableSort_uint8_Descending_256 395 ns 6556 ns BM_StableSort_uint8_Descending_1024 1712 ns 24669 ns BM_StableSort_uint8_Descending_4096 7748 ns 83407 ns BM_StableSort_uint8_Descending_16384 40779 ns 104043 ns BM_StableSort_uint8_Descending_65536 181560 ns 467680 ns BM_StableSort_uint8_Descending_262144 1146627 ns 2102769 ns BM_StableSort_uint8_Descending_524288 2874096 ns 4572229 ns BM_StableSort_uint8_Descending_1048576 5873195 ns 10170663 ns BM_StableSort_uint8_SingleElement_1 3.28 ns 3.58 ns BM_StableSort_uint8_SingleElement_4 6.44 ns 7.40 ns BM_StableSort_uint8_SingleElement_16 14.9 ns 16.4 ns BM_StableSort_uint8_SingleElement_64 51.2 ns 52.9 ns BM_StableSort_uint8_SingleElement_256 876 ns 490 ns BM_StableSort_uint8_SingleElement_1024 3041 ns 2750 ns BM_StableSort_uint8_SingleElement_4096 11947 ns 14326 ns BM_StableSort_uint8_SingleElement_16384 46669 ns 69984 ns BM_StableSort_uint8_SingleElement_65536 197903 ns 328961 ns BM_StableSort_uint8_SingleElement_262144 1031466 ns 1551436 ns BM_StableSort_uint8_SingleElement_524288 2447672 ns 3049553 ns BM_StableSort_uint8_SingleElement_1048576 4793087 ns 7615245 ns BM_StableSort_uint8_PipeOrgan_1 3.38 ns 3.56 ns BM_StableSort_uint8_PipeOrgan_4 7.16 ns 8.70 ns BM_StableSort_uint8_PipeOrgan_16 31.7 ns 35.3 ns BM_StableSort_uint8_PipeOrgan_64 326 ns 366 ns BM_StableSort_uint8_PipeOrgan_256 409 ns 2942 ns BM_StableSort_uint8_PipeOrgan_1024 1994 ns 12571 ns BM_StableSort_uint8_PipeOrgan_4096 8086 ns 46278 ns BM_StableSort_uint8_PipeOrgan_16384 41749 ns 79813 ns BM_StableSort_uint8_PipeOrgan_65536 180697 ns 375120 ns BM_StableSort_uint8_PipeOrgan_262144 1004899 ns 1676143 ns BM_StableSort_uint8_PipeOrgan_524288 2456081 ns 3333949 ns BM_StableSort_uint8_PipeOrgan_1048576 5030857 ns 7591303 ns BM_StableSort_uint8_QuickSortAdversary_1 3.12 ns 3.46 ns BM_StableSort_uint8_QuickSortAdversary_4 7.25 ns 6.83 ns BM_StableSort_uint8_QuickSortAdversary_16 14.6 ns 16.2 ns BM_StableSort_uint8_QuickSortAdversary_64 650 ns 665 ns BM_StableSort_uint8_QuickSortAdversary_256 395 ns 2982 ns BM_StableSort_uint8_QuickSortAdversary_1024 3125 ns 2583 ns BM_StableSort_uint8_QuickSortAdversary_4096 11797 ns 13929 ns BM_StableSort_uint8_QuickSortAdversary_16384 45803 ns 66513 ns BM_StableSort_uint8_QuickSortAdversary_65536 190745 ns 313467 ns BM_StableSort_uint8_QuickSortAdversary_262144 974646 ns 1469014 ns BM_StableSort_uint8_QuickSortAdversary_524288 2317553 ns 3022065 ns BM_StableSort_uint8_QuickSortAdversary_1048576 4898703 ns 6854079 ns BM_StableSort_int16_Random_1 3.94 ns 3.49 ns BM_StableSort_int16_Random_4 20.8 ns 23.2 ns BM_StableSort_int16_Random_16 133 ns 163 ns BM_StableSort_int16_Random_64 903 ns 953 ns BM_StableSort_int16_Random_256 5638 ns 6258 ns BM_StableSort_int16_Random_1024 3056 ns 34587 ns BM_StableSort_int16_Random_4096 10596 ns 168397 ns BM_StableSort_int16_Random_16384 49908 ns 753031 ns BM_StableSort_int16_Random_65536 444605 ns 3838368 ns BM_StableSort_int16_Random_262144 2419345 ns 15657285 ns BM_StableSort_int16_Random_524288 7984040 ns 32726933 ns BM_StableSort_int16_Random_1048576 16092424 ns 67999766 ns BM_StableSort_int16_Ascending_1 3.40 ns 3.43 ns BM_StableSort_int16_Ascending_4 5.45 ns 5.79 ns BM_StableSort_int16_Ascending_16 12.0 ns 15.3 ns BM_StableSort_int16_Ascending_64 39.6 ns 52.6 ns BM_StableSort_int16_Ascending_256 470 ns 550 ns BM_StableSort_int16_Ascending_1024 1686 ns 2707 ns BM_StableSort_int16_Ascending_4096 5676 ns 14165 ns BM_StableSort_int16_Ascending_16384 21413 ns 69483 ns BM_StableSort_int16_Ascending_65536 88010 ns 334466 ns BM_StableSort_int16_Ascending_262144 567239 ns 1570620 ns BM_StableSort_int16_Ascending_524288 1553063 ns 3424666 ns BM_StableSort_int16_Ascending_1048576 3145577 ns 8499649 ns BM_StableSort_int16_Descending_1 3.22 ns 3.54 ns BM_StableSort_int16_Descending_4 6.85 ns 10.2 ns BM_StableSort_int16_Descending_16 62.7 ns 62.2 ns BM_StableSort_int16_Descending_64 1138 ns 1036 ns BM_StableSort_int16_Descending_256 5541 ns 4696 ns BM_StableSort_int16_Descending_1024 3046 ns 19577 ns BM_StableSort_int16_Descending_4096 10962 ns 79149 ns BM_StableSort_int16_Descending_16384 58182 ns 327709 ns BM_StableSort_int16_Descending_65536 447025 ns 1424896 ns BM_StableSort_int16_Descending_262144 1104973 ns 5921903 ns BM_StableSort_int16_Descending_524288 2547840 ns 17956789 ns BM_StableSort_int16_Descending_1048576 5093555 ns 17044318 ns BM_StableSort_int16_SingleElement_1 3.56 ns 3.96 ns BM_StableSort_int16_SingleElement_4 5.75 ns 6.72 ns BM_StableSort_int16_SingleElement_16 12.4 ns 16.1 ns BM_StableSort_int16_SingleElement_64 36.9 ns 54.4 ns BM_StableSort_int16_SingleElement_256 473 ns 557 ns BM_StableSort_int16_SingleElement_1024 1828 ns 2826 ns BM_StableSort_int16_SingleElement_4096 6239 ns 14252 ns BM_StableSort_int16_SingleElement_16384 23695 ns 70369 ns BM_StableSort_int16_SingleElement_65536 93281 ns 361641 ns BM_StableSort_int16_SingleElement_262144 599078 ns 1640216 ns BM_StableSort_int16_SingleElement_524288 1659678 ns 3343087 ns BM_StableSort_int16_SingleElement_1048576 3184033 ns 7770271 ns BM_StableSort_int16_PipeOrgan_1 3.75 ns 3.76 ns BM_StableSort_int16_PipeOrgan_4 5.94 ns 7.74 ns BM_StableSort_int16_PipeOrgan_16 26.7 ns 25.9 ns BM_StableSort_int16_PipeOrgan_64 300 ns 263 ns BM_StableSort_int16_PipeOrgan_256 2769 ns 2760 ns BM_StableSort_int16_PipeOrgan_1024 2996 ns 10544 ns BM_StableSort_int16_PipeOrgan_4096 11641 ns 44750 ns BM_StableSort_int16_PipeOrgan_16384 57224 ns 200464 ns BM_StableSort_int16_PipeOrgan_65536 416873 ns 887631 ns BM_StableSort_int16_PipeOrgan_262144 843264 ns 3588669 ns BM_StableSort_int16_PipeOrgan_524288 2027741 ns 11056924 ns BM_StableSort_int16_PipeOrgan_1048576 4223773 ns 13261276 ns BM_StableSort_int16_QuickSortAdversary_1 3.83 ns 3.68 ns BM_StableSort_int16_QuickSortAdversary_4 5.55 ns 6.93 ns BM_StableSort_int16_QuickSortAdversary_16 12.3 ns 15.2 ns BM_StableSort_int16_QuickSortAdversary_64 646 ns 632 ns BM_StableSort_int16_QuickSortAdversary_256 2751 ns 2542 ns BM_StableSort_int16_QuickSortAdversary_1024 3028 ns 16901 ns BM_StableSort_int16_QuickSortAdversary_4096 10862 ns 80222 ns BM_StableSort_int16_QuickSortAdversary_16384 57753 ns 317281 ns BM_StableSort_int16_QuickSortAdversary_65536 94064 ns 328502 ns BM_StableSort_int16_QuickSortAdversary_262144 557796 ns 1613208 ns BM_StableSort_int16_QuickSortAdversary_524288 1518451 ns 3479740 ns BM_StableSort_int16_QuickSortAdversary_1048576 3165129 ns 7655880 ns BM_StableSort_uint16_Random_1 3.26 ns 3.44 ns BM_StableSort_uint16_Random_4 21.1 ns 22.2 ns BM_StableSort_uint16_Random_16 157 ns 156 ns BM_StableSort_uint16_Random_64 955 ns 947 ns BM_StableSort_uint16_Random_256 5886 ns 6097 ns BM_StableSort_uint16_Random_1024 2787 ns 30776 ns BM_StableSort_uint16_Random_4096 9973 ns 155652 ns BM_StableSort_uint16_Random_16384 48628 ns 741072 ns BM_StableSort_uint16_Random_65536 439609 ns 3478966 ns BM_StableSort_uint16_Random_262144 2336983 ns 15197642 ns BM_StableSort_uint16_Random_524288 7888701 ns 34234254 ns BM_StableSort_uint16_Random_1048576 14865180 ns 68516386 ns BM_StableSort_uint16_Ascending_1 3.33 ns 4.00 ns BM_StableSort_uint16_Ascending_4 5.79 ns 6.64 ns BM_StableSort_uint16_Ascending_16 14.9 ns 15.5 ns BM_StableSort_uint16_Ascending_64 50.2 ns 52.5 ns BM_StableSort_uint16_Ascending_256 538 ns 546 ns BM_StableSort_uint16_Ascending_1024 1645 ns 2652 ns BM_StableSort_uint16_Ascending_4096 5559 ns 14517 ns BM_StableSort_uint16_Ascending_16384 22803 ns 70275 ns BM_StableSort_uint16_Ascending_65536 83109 ns 333446 ns BM_StableSort_uint16_Ascending_262144 562667 ns 1568670 ns BM_StableSort_uint16_Ascending_524288 1564646 ns 3059839 ns BM_StableSort_uint16_Ascending_1048576 3178826 ns 7048327 ns BM_StableSort_uint16_Descending_1 3.34 ns 3.93 ns BM_StableSort_uint16_Descending_4 8.75 ns 9.73 ns BM_StableSort_uint16_Descending_16 55.9 ns 55.5 ns BM_StableSort_uint16_Descending_64 1021 ns 1035 ns BM_StableSort_uint16_Descending_256 4752 ns 4931 ns BM_StableSort_uint16_Descending_1024 2982 ns 19727 ns BM_StableSort_uint16_Descending_4096 10432 ns 83165 ns BM_StableSort_uint16_Descending_16384 56593 ns 326131 ns BM_StableSort_uint16_Descending_65536 439134 ns 1371346 ns BM_StableSort_uint16_Descending_262144 1220925 ns 5735665 ns BM_StableSort_uint16_Descending_524288 2767234 ns 16758330 ns BM_StableSort_uint16_Descending_1048576 5673769 ns 17541715 ns BM_StableSort_uint16_SingleElement_1 3.53 ns 3.73 ns BM_StableSort_uint16_SingleElement_4 6.27 ns 5.81 ns BM_StableSort_uint16_SingleElement_16 14.8 ns 15.1 ns BM_StableSort_uint16_SingleElement_64 51.5 ns 50.9 ns BM_StableSort_uint16_SingleElement_256 536 ns 540 ns BM_StableSort_uint16_SingleElement_1024 1669 ns 2690 ns BM_StableSort_uint16_SingleElement_4096 5840 ns 14230 ns BM_StableSort_uint16_SingleElement_16384 22468 ns 68524 ns BM_StableSort_uint16_SingleElement_65536 89845 ns 332187 ns BM_StableSort_uint16_SingleElement_262144 590736 ns 1550868 ns BM_StableSort_uint16_SingleElement_524288 1573677 ns 3095703 ns BM_StableSort_uint16_SingleElement_1048576 3183421 ns 8251180 ns BM_StableSort_uint16_PipeOrgan_1 3.70 ns 3.64 ns BM_StableSort_uint16_PipeOrgan_4 7.01 ns 6.81 ns BM_StableSort_uint16_PipeOrgan_16 25.7 ns 26.4 ns BM_StableSort_uint16_PipeOrgan_64 283 ns 277 ns BM_StableSort_uint16_PipeOrgan_256 2562 ns 2852 ns BM_StableSort_uint16_PipeOrgan_1024 2863 ns 10892 ns BM_StableSort_uint16_PipeOrgan_4096 10585 ns 45668 ns BM_StableSort_uint16_PipeOrgan_16384 59151 ns 194358 ns BM_StableSort_uint16_PipeOrgan_65536 508579 ns 854692 ns BM_StableSort_uint16_PipeOrgan_262144 901294 ns 3606346 ns BM_StableSort_uint16_PipeOrgan_524288 2192498 ns 10449279 ns BM_StableSort_uint16_PipeOrgan_1048576 4204368 ns 11956606 ns BM_StableSort_uint16_QuickSortAdversary_1 3.20 ns 3.63 ns BM_StableSort_uint16_QuickSortAdversary_4 5.30 ns 6.38 ns BM_StableSort_uint16_QuickSortAdversary_16 14.5 ns 15.3 ns BM_StableSort_uint16_QuickSortAdversary_64 575 ns 611 ns BM_StableSort_uint16_QuickSortAdversary_256 2423 ns 2577 ns BM_StableSort_uint16_QuickSortAdversary_1024 2794 ns 16854 ns BM_StableSort_uint16_QuickSortAdversary_4096 10511 ns 75952 ns BM_StableSort_uint16_QuickSortAdversary_16384 56214 ns 333824 ns BM_StableSort_uint16_QuickSortAdversary_65536 422512 ns 1354867 ns BM_StableSort_uint16_QuickSortAdversary_262144 583301 ns 1564443 ns BM_StableSort_uint16_QuickSortAdversary_524288 1584319 ns 3265575 ns BM_StableSort_uint16_QuickSortAdversary_1048576 3197732 ns 7945245 ns BM_StableSort_int32_Random_1 3.81 ns 3.70 ns BM_StableSort_int32_Random_4 20.8 ns 23.4 ns BM_StableSort_int32_Random_16 134 ns 161 ns BM_StableSort_int32_Random_64 895 ns 984 ns BM_StableSort_int32_Random_256 5640 ns 5897 ns BM_StableSort_int32_Random_1024 6994 ns 32118 ns BM_StableSort_int32_Random_4096 27367 ns 168960 ns BM_StableSort_int32_Random_16384 183261 ns 843240 ns BM_StableSort_int32_Random_65536 950914 ns 3953588 ns BM_StableSort_int32_Random_262144 3673311 ns 16790171 ns BM_StableSort_int32_Random_524288 11515700 ns 36023098 ns BM_StableSort_int32_Random_1048576 24492515 ns 78116028 ns BM_StableSort_int32_Ascending_1 3.31 ns 4.48 ns BM_StableSort_int32_Ascending_4 5.96 ns 6.99 ns BM_StableSort_int32_Ascending_16 13.0 ns 16.0 ns BM_StableSort_int32_Ascending_64 36.7 ns 53.0 ns BM_StableSort_int32_Ascending_256 391 ns 471 ns BM_StableSort_int32_Ascending_1024 2705 ns 2682 ns BM_StableSort_int32_Ascending_4096 8773 ns 14231 ns BM_StableSort_int32_Ascending_16384 34709 ns 70625 ns BM_StableSort_int32_Ascending_65536 142907 ns 344482 ns BM_StableSort_int32_Ascending_262144 745483 ns 1591418 ns BM_StableSort_int32_Ascending_524288 1873701 ns 3190305 ns BM_StableSort_int32_Ascending_1048576 3851590 ns 7570095 ns BM_StableSort_int32_Descending_1 3.22 ns 4.23 ns BM_StableSort_int32_Descending_4 7.58 ns 11.2 ns BM_StableSort_int32_Descending_16 63.9 ns 58.6 ns BM_StableSort_int32_Descending_64 1133 ns 1017 ns BM_StableSort_int32_Descending_256 4850 ns 4464 ns BM_StableSort_int32_Descending_1024 7023 ns 18954 ns BM_StableSort_int32_Descending_4096 28550 ns 75163 ns BM_StableSort_int32_Descending_16384 200880 ns 341104 ns BM_StableSort_int32_Descending_65536 1095910 ns 1398021 ns BM_StableSort_int32_Descending_262144 3818864 ns 5695486 ns BM_StableSort_int32_Descending_524288 5606779 ns 17593982 ns BM_StableSort_int32_Descending_1048576 16416366 ns 26649503 ns BM_StableSort_int32_SingleElement_1 3.81 ns 3.71 ns BM_StableSort_int32_SingleElement_4 6.57 ns 6.61 ns BM_StableSort_int32_SingleElement_16 14.0 ns 15.8 ns BM_StableSort_int32_SingleElement_64 38.7 ns 53.5 ns BM_StableSort_int32_SingleElement_256 386 ns 554 ns BM_StableSort_int32_SingleElement_1024 2761 ns 3046 ns BM_StableSort_int32_SingleElement_4096 9179 ns 15188 ns BM_StableSort_int32_SingleElement_16384 34794 ns 70119 ns BM_StableSort_int32_SingleElement_65536 135190 ns 354755 ns BM_StableSort_int32_SingleElement_262144 760995 ns 1644072 ns BM_StableSort_int32_SingleElement_524288 1969575 ns 3343419 ns BM_StableSort_int32_SingleElement_1048576 4423816 ns 8346971 ns BM_StableSort_int32_PipeOrgan_1 3.79 ns 3.63 ns BM_StableSort_int32_PipeOrgan_4 6.21 ns 6.73 ns BM_StableSort_int32_PipeOrgan_16 27.5 ns 26.0 ns BM_StableSort_int32_PipeOrgan_64 291 ns 265 ns BM_StableSort_int32_PipeOrgan_256 2557 ns 2518 ns BM_StableSort_int32_PipeOrgan_1024 6765 ns 10976 ns BM_StableSort_int32_PipeOrgan_4096 26373 ns 44537 ns BM_StableSort_int32_PipeOrgan_16384 201466 ns 188582 ns BM_StableSort_int32_PipeOrgan_65536 1148533 ns 802368 ns BM_StableSort_int32_PipeOrgan_262144 2255177 ns 3477829 ns BM_StableSort_int32_PipeOrgan_524288 3947015 ns 10356637 ns BM_StableSort_int32_PipeOrgan_1048576 10274312 ns 16405366 ns BM_StableSort_int32_QuickSortAdversary_1 3.32 ns 4.36 ns BM_StableSort_int32_QuickSortAdversary_4 5.98 ns 7.44 ns BM_StableSort_int32_QuickSortAdversary_16 13.0 ns 16.3 ns BM_StableSort_int32_QuickSortAdversary_64 657 ns 616 ns BM_StableSort_int32_QuickSortAdversary_256 2569 ns 2483 ns BM_StableSort_int32_QuickSortAdversary_1024 6898 ns 19635 ns BM_StableSort_int32_QuickSortAdversary_4096 27092 ns 75108 ns BM_StableSort_int32_QuickSortAdversary_16384 190379 ns 316463 ns BM_StableSort_int32_QuickSortAdversary_65536 1109040 ns 1319018 ns BM_StableSort_int32_QuickSortAdversary_262144 4361925 ns 5472779 ns BM_StableSort_int32_QuickSortAdversary_524288 6528215 ns 17538983 ns BM_StableSort_int32_QuickSortAdversary_1048576 18345325 ns 27223926 ns BM_StableSort_uint32_Random_1 3.67 ns 3.82 ns BM_StableSort_uint32_Random_4 22.3 ns 21.8 ns BM_StableSort_uint32_Random_16 155 ns 153 ns BM_StableSort_uint32_Random_64 946 ns 976 ns BM_StableSort_uint32_Random_256 5824 ns 6019 ns BM_StableSort_uint32_Random_1024 4525 ns 32764 ns BM_StableSort_uint32_Random_4096 17223 ns 158608 ns BM_StableSort_uint32_Random_16384 134821 ns 748525 ns BM_StableSort_uint32_Random_65536 716644 ns 3453325 ns BM_StableSort_uint32_Random_262144 3628062 ns 16065414 ns BM_StableSort_uint32_Random_524288 10971334 ns 36567712 ns BM_StableSort_uint32_Random_1048576 22688377 ns 77533497 ns BM_StableSort_uint32_Ascending_1 3.57 ns 3.44 ns BM_StableSort_uint32_Ascending_4 5.73 ns 5.33 ns BM_StableSort_uint32_Ascending_16 14.5 ns 14.0 ns BM_StableSort_uint32_Ascending_64 50.3 ns 51.3 ns BM_StableSort_uint32_Ascending_256 465 ns 467 ns BM_StableSort_uint32_Ascending_1024 3042 ns 2530 ns BM_StableSort_uint32_Ascending_4096 9842 ns 12207 ns BM_StableSort_uint32_Ascending_16384 37994 ns 61726 ns BM_StableSort_uint32_Ascending_65536 148890 ns 294385 ns BM_StableSort_uint32_Ascending_262144 855080 ns 1422167 ns BM_StableSort_uint32_Ascending_524288 2154903 ns 3203018 ns BM_StableSort_uint32_Ascending_1048576 5002518 ns 7563817 ns BM_StableSort_uint32_Descending_1 3.51 ns 3.40 ns BM_StableSort_uint32_Descending_4 9.09 ns 7.95 ns BM_StableSort_uint32_Descending_16 54.8 ns 74.4 ns BM_StableSort_uint32_Descending_64 1003 ns 1305 ns BM_StableSort_uint32_Descending_256 4545 ns 5300 ns BM_StableSort_uint32_Descending_1024 4361 ns 21884 ns BM_StableSort_uint32_Descending_4096 16018 ns 90534 ns BM_StableSort_uint32_Descending_16384 146274 ns 381943 ns BM_StableSort_uint32_Descending_65536 938248 ns 1536806 ns BM_StableSort_uint32_Descending_262144 3899300 ns 6387843 ns BM_StableSort_uint32_Descending_524288 5808157 ns 21959858 ns BM_StableSort_uint32_Descending_1048576 17520047 ns 26351912 ns BM_StableSort_uint32_SingleElement_1 4.03 ns 3.97 ns BM_StableSort_uint32_SingleElement_4 6.55 ns 6.41 ns BM_StableSort_uint32_SingleElement_16 15.6 ns 15.8 ns BM_StableSort_uint32_SingleElement_64 52.3 ns 58.7 ns BM_StableSort_uint32_SingleElement_256 473 ns 485 ns BM_StableSort_uint32_SingleElement_1024 3020 ns 2407 ns BM_StableSort_uint32_SingleElement_4096 9998 ns 12527 ns BM_StableSort_uint32_SingleElement_16384 38072 ns 62228 ns BM_StableSort_uint32_SingleElement_65536 153706 ns 295662 ns BM_StableSort_uint32_SingleElement_262144 836532 ns 1477099 ns BM_StableSort_uint32_SingleElement_524288 2144900 ns 3157204 ns BM_StableSort_uint32_SingleElement_1048576 4995525 ns 7617233 ns BM_StableSort_uint32_PipeOrgan_1 4.02 ns 3.99 ns BM_StableSort_uint32_PipeOrgan_4 6.97 ns 6.84 ns BM_StableSort_uint32_PipeOrgan_16 26.1 ns 29.7 ns BM_StableSort_uint32_PipeOrgan_64 266 ns 333 ns BM_StableSort_uint32_PipeOrgan_256 2462 ns 2892 ns BM_StableSort_uint32_PipeOrgan_1024 4291 ns 12431 ns BM_StableSort_uint32_PipeOrgan_4096 15638 ns 51449 ns BM_StableSort_uint32_PipeOrgan_16384 154563 ns 217460 ns BM_StableSort_uint32_PipeOrgan_65536 907724 ns 925873 ns BM_StableSort_uint32_PipeOrgan_262144 2394580 ns 4103575 ns BM_StableSort_uint32_PipeOrgan_524288 4177145 ns 13947158 ns BM_StableSort_uint32_PipeOrgan_1048576 11848224 ns 18807297 ns BM_StableSort_uint32_QuickSortAdversary_1 3.50 ns 3.43 ns BM_StableSort_uint32_QuickSortAdversary_4 5.88 ns 4.96 ns BM_StableSort_uint32_QuickSortAdversary_16 14.6 ns 14.0 ns BM_StableSort_uint32_QuickSortAdversary_64 576 ns 715 ns BM_StableSort_uint32_QuickSortAdversary_256 2353 ns 2797 ns BM_StableSort_uint32_QuickSortAdversary_1024 4176 ns 21775 ns BM_StableSort_uint32_QuickSortAdversary_4096 15565 ns 96188 ns BM_StableSort_uint32_QuickSortAdversary_16384 149092 ns 398332 ns BM_StableSort_uint32_QuickSortAdversary_65536 902488 ns 1552393 ns BM_StableSort_uint32_QuickSortAdversary_262144 3946517 ns 6560414 ns BM_StableSort_uint32_QuickSortAdversary_524288 6247114 ns 22420977 ns BM_StableSort_uint32_QuickSortAdversary_1048576 19892446 ns 26529576 ns BM_StableSort_int64_Random_1 3.83 ns 3.98 ns BM_StableSort_int64_Random_4 21.1 ns 24.0 ns BM_StableSort_int64_Random_16 129 ns 136 ns BM_StableSort_int64_Random_64 890 ns 906 ns BM_StableSort_int64_Random_256 5542 ns 5901 ns BM_StableSort_int64_Random_1024 16085 ns 33112 ns BM_StableSort_int64_Random_4096 63895 ns 162181 ns BM_StableSort_int64_Random_16384 348827 ns 790045 ns BM_StableSort_int64_Random_65536 1488237 ns 3557506 ns BM_StableSort_int64_Random_262144 8195713 ns 16315808 ns BM_StableSort_int64_Random_524288 16586833 ns 38274075 ns BM_StableSort_int64_Random_1048576 40346644 ns 79182089 ns BM_StableSort_int64_Ascending_1 3.76 ns 3.55 ns BM_StableSort_int64_Ascending_4 5.82 ns 6.19 ns BM_StableSort_int64_Ascending_16 11.7 ns 11.8 ns BM_StableSort_int64_Ascending_64 32.9 ns 36.8 ns BM_StableSort_int64_Ascending_256 415 ns 550 ns BM_StableSort_int64_Ascending_1024 5352 ns 3347 ns BM_StableSort_int64_Ascending_4096 17516 ns 19134 ns BM_StableSort_int64_Ascending_16384 64147 ns 91099 ns BM_StableSort_int64_Ascending_65536 322126 ns 434009 ns BM_StableSort_int64_Ascending_262144 1554669 ns 2057056 ns BM_StableSort_int64_Ascending_524288 3656527 ns 5016650 ns BM_StableSort_int64_Ascending_1048576 10469979 ns 12908613 ns BM_StableSort_int64_Descending_1 4.09 ns 3.35 ns BM_StableSort_int64_Descending_4 9.13 ns 8.01 ns BM_StableSort_int64_Descending_16 76.8 ns 92.9 ns BM_StableSort_int64_Descending_64 1336 ns 1417 ns BM_StableSort_int64_Descending_256 5525 ns 5674 ns BM_StableSort_int64_Descending_1024 17461 ns 22558 ns BM_StableSort_int64_Descending_4096 64285 ns 102360 ns BM_StableSort_int64_Descending_16384 336946 ns 388940 ns BM_StableSort_int64_Descending_65536 837912 ns 1662169 ns BM_StableSort_int64_Descending_262144 3680806 ns 7494323 ns BM_StableSort_int64_Descending_524288 11023784 ns 24935033 ns BM_StableSort_int64_Descending_1048576 20023568 ns 33220712 ns BM_StableSort_int64_SingleElement_1 3.37 ns 3.98 ns BM_StableSort_int64_SingleElement_4 5.32 ns 6.92 ns BM_StableSort_int64_SingleElement_16 10.9 ns 13.3 ns BM_StableSort_int64_SingleElement_64 32.1 ns 43.8 ns BM_StableSort_int64_SingleElement_256 420 ns 541 ns BM_StableSort_int64_SingleElement_1024 5689 ns 3381 ns BM_StableSort_int64_SingleElement_4096 19199 ns 17989 ns BM_StableSort_int64_SingleElement_16384 75754 ns 91963 ns BM_StableSort_int64_SingleElement_65536 357106 ns 500326 ns BM_StableSort_int64_SingleElement_262144 1672975 ns 2417734 ns BM_StableSort_int64_SingleElement_524288 3642891 ns 5200878 ns BM_StableSort_int64_SingleElement_1048576 11172007 ns 13729511 ns BM_StableSort_int64_PipeOrgan_1 3.38 ns 3.94 ns BM_StableSort_int64_PipeOrgan_4 5.73 ns 6.44 ns BM_StableSort_int64_PipeOrgan_16 27.5 ns 29.0 ns BM_StableSort_int64_PipeOrgan_64 310 ns 321 ns BM_StableSort_int64_PipeOrgan_256 2761 ns 2918 ns BM_StableSort_int64_PipeOrgan_1024 16105 ns 12525 ns BM_StableSort_int64_PipeOrgan_4096 65289 ns 59990 ns BM_StableSort_int64_PipeOrgan_16384 341757 ns 270636 ns BM_StableSort_int64_PipeOrgan_65536 587452 ns 1126132 ns BM_StableSort_int64_PipeOrgan_262144 2837955 ns 5034180 ns BM_StableSort_int64_PipeOrgan_524288 6617313 ns 15267354 ns BM_StableSort_int64_PipeOrgan_1048576 15208796 ns 23162989 ns BM_StableSort_int64_QuickSortAdversary_1 3.77 ns 3.45 ns BM_StableSort_int64_QuickSortAdversary_4 5.55 ns 5.20 ns BM_StableSort_int64_QuickSortAdversary_16 12.5 ns 11.5 ns BM_StableSort_int64_QuickSortAdversary_64 646 ns 750 ns BM_StableSort_int64_QuickSortAdversary_256 2655 ns 3539 ns BM_StableSort_int64_QuickSortAdversary_1024 16373 ns 22349 ns BM_StableSort_int64_QuickSortAdversary_4096 62306 ns 97248 ns BM_StableSort_int64_QuickSortAdversary_16384 321755 ns 388084 ns BM_StableSort_int64_QuickSortAdversary_65536 1374694 ns 1596091 ns BM_StableSort_int64_QuickSortAdversary_262144 4374661 ns 6894139 ns BM_StableSort_int64_QuickSortAdversary_524288 12736074 ns 23932229 ns BM_StableSort_int64_QuickSortAdversary_1048576 22615219 ns 33355629 ns BM_StableSort_uint64_Random_1 3.82 ns 3.49 ns BM_StableSort_uint64_Random_4 22.4 ns 23.4 ns BM_StableSort_uint64_Random_16 154 ns 146 ns BM_StableSort_uint64_Random_64 924 ns 926 ns BM_StableSort_uint64_Random_256 5864 ns 5913 ns BM_StableSort_uint64_Random_1024 7168 ns 31746 ns BM_StableSort_uint64_Random_4096 27668 ns 154224 ns BM_StableSort_uint64_Random_16384 219526 ns 755205 ns BM_StableSort_uint64_Random_65536 965251 ns 3490165 ns BM_StableSort_uint64_Random_262144 6262162 ns 15889589 ns BM_StableSort_uint64_Random_524288 12530078 ns 36458581 ns BM_StableSort_uint64_Random_1048576 38462191 ns 75168445 ns BM_StableSort_uint64_Ascending_1 3.30 ns 3.35 ns BM_StableSort_uint64_Ascending_4 5.65 ns 5.84 ns BM_StableSort_uint64_Ascending_16 14.7 ns 12.6 ns BM_StableSort_uint64_Ascending_64 55.3 ns 34.6 ns BM_StableSort_uint64_Ascending_256 513 ns 533 ns BM_StableSort_uint64_Ascending_1024 5541 ns 3189 ns BM_StableSort_uint64_Ascending_4096 17706 ns 20326 ns BM_StableSort_uint64_Ascending_16384 66420 ns 93757 ns BM_StableSort_uint64_Ascending_65536 341425 ns 435016 ns BM_StableSort_uint64_Ascending_262144 1595691 ns 2088317 ns BM_StableSort_uint64_Ascending_524288 3808703 ns 5092832 ns BM_StableSort_uint64_Ascending_1048576 11060417 ns 13023250 ns BM_StableSort_uint64_Descending_1 3.29 ns 3.35 ns BM_StableSort_uint64_Descending_4 8.65 ns 7.92 ns BM_StableSort_uint64_Descending_16 54.7 ns 80.2 ns BM_StableSort_uint64_Descending_64 1028 ns 1307 ns BM_StableSort_uint64_Descending_256 4521 ns 5635 ns BM_StableSort_uint64_Descending_1024 7122 ns 23323 ns BM_StableSort_uint64_Descending_4096 30538 ns 95892 ns BM_StableSort_uint64_Descending_16384 195565 ns 392721 ns BM_StableSort_uint64_Descending_65536 852002 ns 1720358 ns BM_StableSort_uint64_Descending_262144 3737884 ns 7484130 ns BM_StableSort_uint64_Descending_524288 11159345 ns 25690770 ns BM_StableSort_uint64_Descending_1048576 20648864 ns 33057383 ns BM_StableSort_uint64_SingleElement_1 3.62 ns 4.10 ns BM_StableSort_uint64_SingleElement_4 6.73 ns 6.64 ns BM_StableSort_uint64_SingleElement_16 14.9 ns 11.3 ns BM_StableSort_uint64_SingleElement_64 52.0 ns 33.0 ns BM_StableSort_uint64_SingleElement_256 511 ns 582 ns BM_StableSort_uint64_SingleElement_1024 6499 ns 3287 ns BM_StableSort_uint64_SingleElement_4096 22190 ns 17616 ns BM_StableSort_uint64_SingleElement_16384 84378 ns 86885 ns BM_StableSort_uint64_SingleElement_65536 466257 ns 457144 ns BM_StableSort_uint64_SingleElement_262144 1993687 ns 2361999 ns BM_StableSort_uint64_SingleElement_524288 4759565 ns 5096771 ns BM_StableSort_uint64_SingleElement_1048576 12426111 ns 13468453 ns BM_StableSort_uint64_PipeOrgan_1 3.73 ns 3.94 ns BM_StableSort_uint64_PipeOrgan_4 7.18 ns 7.54 ns BM_StableSort_uint64_PipeOrgan_16 25.2 ns 29.1 ns BM_StableSort_uint64_PipeOrgan_64 260 ns 321 ns BM_StableSort_uint64_PipeOrgan_256 2468 ns 2970 ns BM_StableSort_uint64_PipeOrgan_1024 7025 ns 12912 ns BM_StableSort_uint64_PipeOrgan_4096 28968 ns 53379 ns BM_StableSort_uint64_PipeOrgan_16384 194156 ns 239790 ns BM_StableSort_uint64_PipeOrgan_65536 599491 ns 993800 ns BM_StableSort_uint64_PipeOrgan_262144 2648585 ns 4689680 ns BM_StableSort_uint64_PipeOrgan_524288 7621109 ns 15401808 ns BM_StableSort_uint64_PipeOrgan_1048576 15608814 ns 23484821 ns BM_StableSort_uint64_QuickSortAdversary_1 3.38 ns 3.54 ns BM_StableSort_uint64_QuickSortAdversary_4 5.50 ns 6.03 ns BM_StableSort_uint64_QuickSortAdversary_16 14.2 ns 11.0 ns BM_StableSort_uint64_QuickSortAdversary_64 597 ns 688 ns BM_StableSort_uint64_QuickSortAdversary_256 2446 ns 2818 ns BM_StableSort_uint64_QuickSortAdversary_1024 7266 ns 20319 ns BM_StableSort_uint64_QuickSortAdversary_4096 31155 ns 89112 ns BM_StableSort_uint64_QuickSortAdversary_16384 201033 ns 390574 ns BM_StableSort_uint64_QuickSortAdversary_65536 871014 ns 1685639 ns BM_StableSort_uint64_QuickSortAdversary_262144 3978535 ns 7265830 ns BM_StableSort_uint64_QuickSortAdversary_524288 10279721 ns 25350004 ns BM_StableSort_uint64_QuickSortAdversary_1048576 20256585 ns 33054393 ns ```	2025-01-09 19:02:35 +01:00
Peng Liu	06673a9e9b	[libc++] Uglify non-standard member typedef const_reference in bitset (#121620) ... According to [[template.bitset.general]](https://eel.is/c++draft/template.bitset.general), `std::bitset` is supposed to have only one (public) member typedef, `reference`. However, libc++'s implementation of `std::bitset` offers more that that. Specifically, it offers a public typedef `const_reference` and two private typedefs `size_type` and `difference_type`. These non-standard member typedefs, despite being private, can cause potential ambiguities in name lookup in user-defined classes, as demonstrated in issue #121618. Fixing the public member typedef `const_reference` is straightforward: we can simply replace it with an `__ugly_name` such as `__const_reference`. However, fixing the private member typedefs `size_type` and `difference_type` is not so straightforward as they are required by the `__bit_iterator` class and the corresponding algorithms optimized for `__bit_iterator`s (e.g., `ranges::fill`). This PR fixes the member typedef `const_reference` by using uglified name for it. Further work will be undertaken to address `size_type` and `difference_type`. Follows up #80706, #111127, and #112843,	2025-01-09 17:42:40 +08:00
James Y Knight	2b26ee6e79	[libcxx] Handle windows system error code mapping in std::error_code. (#93101) ... The `std::error_code`/`std::error_category` functionality is designed to support multiple error domains. On Unix, both system calls and libc functions return the same error codes, and thus, libc++ today treats `generic_category()` and `system_category()` as being equivalent. However, on Windows, libc functions return `errno.h` error codes in the `errno` global, but system calls return the very different `winerror.h` error codes via `GetLastError()`. As such, there is a need to map the winerror.h error codes into generic errno codes. In libc++, however, the system_error facility does not implement this mapping; instead the mapping is hidden inside libc++, used directly by the std::filesystem implementation. That has a few problems: 1. For std::filesystem APIs, the concrete windows error number is lost, before users can see it. The intent of the distinction between std::error_code and std::error_condition is that the error_code return has the original (potentially more detailed) error code. 2. User-written code which calls Windows system APIs requires this same mapping, so it also can also return error_code objects that other (cross-platform) code can understand. After this commit, an `error_code` with `generic_category()` is used to report an error from `errno`, and, on Windows only, an `error_code` with `system_category()` is used to report an error from `GetLastError()`. On Unix, system_category remains identity-mapped to generic_category, but is never used by libc++ itself. The windows error code mapping is moved into system_error, so that conversion of an `error_code` to `error_condition` correctly translates the `system_category()` code into a `generic_category()` code, when appropriate. This allows code like: `error_code(GetLastError(), system_category()) == errc::invalid_argument` to work as expected -- as it does with MSVC STL. (Continued from old phabricator review [D151493](https://reviews.llvm.org/D151493))	2025-01-08 17:34:48 -05:00
Louis Dionne	1855333e3a	[libc++] Fix documentation for setting hardening ABI macros (#121946) ... The documentation was misleading, suggesting that people could simply define these macros, when in reality they must be passed at CMake configuration time in a very specific way. This was reported in #https://github.com/bitcoin/bitcoin/pull/31612.	2025-01-07 16:47:39 -05:00
Louis Dionne	9612175f22	[libc++][NFC] Remove stray backtick in documentation	2025-01-07 16:47:18 -05:00
Louis Dionne	292c1350d1	[libc++] Add new utilities to compare benchmark results between builds (#120743) ... Also, add documentation for it.	2025-01-07 12:37:11 -05:00
Konstantin Varlamov	bda7c9ac79	[libc++][hardening] Add checks to forward_list element access. (#120858) ... In our implementation, failing these checks would result in a null pointer access rather than an out-of-bounds access.	2025-01-06 15:50:00 -05:00
Konstantin Varlamov	ac1d560709	[libc++][hardening] Add a bounds check for valarray and bitset. (#120685) ... Add a `valid-element-access` check to `valarray::operator[]` and `bitset::operator[]`.	2024-12-24 18:22:18 -08:00
Nikolas Klauser	6261599245	[libc++] Mark P0270R3 as Nothing To Do ... The paper is fixing a wording bug, so there's nothing to do for implementations.	2024-12-22 13:52:36 +01:00
Nikolas Klauser	21e6f16517	[libc++] Mark N4089 as complete ... The paper has been implemented since at least LLVM 5, maybe earlier.	2024-12-22 03:43:27 +01:00
Nikolas Klauser	037da01022	[libc++] Mark P0175R1 as 'Nothing To Do' ... The paper is purely editorial. Fixes #99941	2024-12-22 02:51:55 +01:00
Louis Dionne	084309a0ef	[libc++] Refactor the Windows and MinGW implementation of the locale base API (#115752) ... This patch reimplements the locale base support for Windows flavors in a way that is more modules-friendly and without defining non-internal names. Since this changes the name of some types and entry points in the built library, this is effectively an ABI break on Windows (which is acceptable after checking with the Windows/libc++ maintainers).	2024-12-16 17:46:05 -05:00
Louis Dionne	01512d29b7	[libc++] Document guidelines for symbols baked into the ABI (#118526) ... Closes #112395	2024-12-10 10:15:13 -05:00
Louis Dionne	e84f79e925	[libc++][docs] Use --show-all in the sample command-line to run benchmarks ... It's really not useful at all to run benchmarks without --show-all since you don't get the benchmark output. And since --show-all is the suggested default way to run benchmarks, it's not necessary anymore to mention it right below.	2024-12-05 15:52:02 -05:00
Louis Dionne	582754280c	[libc++][NFC] Fix slightly incorrect row in the CSV files	2024-12-02 11:52:43 -05:00
A. Jiang	c2950982fe	[libc++] Add Wroclaw straw polls (#118116)	2024-12-02 08:54:07 -05:00
Louis Dionne	ae9b91acc7	[libc++] Fix malformed CSV entry for C++26 LWG issue	2024-11-29 16:03:40 -05:00
Nikolas Klauser	59716479fc	[libc++] Add coding guidelines to the docs (#117051) ... We have a buch of coding guidelines which are either documented as design docs, which aren't really applicable or not at all. This moves coding guidelines we have currently in the design docs into a separate file and adds a bunch of guidelines which we have but aren't documented anywhere.	2024-11-28 23:06:28 +01:00
Peng Liu	056153f36e	Optimize vector::assign for InputIterator-only pair inputs (#113852) ... This PR optimizes the input iterator overload of `assign(_InputIterator, _InputIterator)` in `std::vector<_Tp, _Allocator>` by directly assigning to already initialized memory, rather than first destroying existing elements and then constructing new ones. By eliminating unnecessary destruction and construction, the proposed algorithm enhances the performance by up to 2x for trivial element types (e.g., `std::vector<int>`), up to 2.6x for non-trivial element types like `std::vector<std::string>`, and up to 3.4x for more complex non-trivial types (e.g., `std::vector<std::vector<int>>`). ### Google Benchmarks Benchmark tests (`libcxx/test/benchmarks/vector_operations.bench.cpp`) were conducted for the `assign()` implementations before and after this patch. The tests focused on trivial element types like `std::vector<int>`, and non-trivial element types such as `std::vector<std::string>` and `std::vector<std::vector<int>>`. #### Before ``` ------------------------------------------------------------------------------------------------- Benchmark Time CPU Iterations ------------------------------------------------------------------------------------------------- BM_AssignInputIterIter/vector_int/1024/1024 1157 ns 1169 ns 608188 BM_AssignInputIterIter<32>/vector_string/1024/1024 14559 ns 14710 ns 47277 BM_AssignInputIterIter<32>/vector_vector_int/1024/1024 26846 ns 27129 ns 25925 ``` #### After ``` ------------------------------------------------------------------------------------------------- Benchmark Time CPU Iterations ------------------------------------------------------------------------------------------------- BM_AssignInputIterIter/vector_int/1024/1024 561 ns 566 ns 1242251 BM_AssignInputIterIter<32>/vector_string/1024/1024 5604 ns 5664 ns 128365 BM_AssignInputIterIter<32>/vector_vector_int/1024/1024 7927 ns 8012 ns 88579 ```	2024-11-28 20:52:59 +01:00
Nikolas Klauser	6cbc37383f	[libc++] Remove the pointer safety functions from the dylib (#117390) ... The pointer safety functions were never implemented by anyone in a non-trivial way, which lead us to removing them entirely from the headers when they were removed in C++23. This also means that just about nobody ever called these functions, especially not in production code. Because of that, we expect there to be no references in the wild to the functions in the dylib. Because of that, this patch removes the symbols from the dylib.	2024-11-28 15:36:05 +01:00
Louis Dionne	afae1a5f32	[libc++] Remove _LIBCPP_DISABLE_AVAILABILITY macro (#112952) ... This was slated for removal years ago, so now's a good time to remove it.	2024-11-23 20:02:15 -05:00
h-vetinari	99f44c8fed	[libc++] update comment for P0067R5 (#113239) ... Fix review comment from #91651 that was not addressed.	2024-11-12 10:57:08 -05:00
Alona Enraght-Moony	0a7e5e3456	[libc++][docs] Document _LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION (#115405) ... This was added in 681cde7dd8b5613dbafc9ca54e0288477f946be3, but isn't currently documented.	2024-11-08 12:35:31 +01:00
Louis Dionne	427a5cf105	[libc++] Add support for bounded iterators in std::array (#110729) ... This patch introduces a new kind of bounded iterator that knows the size of its valid range at compile-time, as in std::array. This allows computing the end of the range from the start of the range and the size, which requires storing only the start of the range in the iterator instead of both the start and the size (or start and end). The iterator wrapper is otherwise identical in design to the existing __bounded_iter. Since this requires changing the type of the iterators returned by std::array, this new bounded iterator is controlled by an ABI flag. As a drive-by, centralize the tests for std::array::operator[] and add missing tests for OOB operator[] on non-empty arrays. Fixes #70864	2024-11-07 09:23:21 -05:00
Louis Dionne	e236a52a88	[libc++] Unify the benchmarks with the test suite (#101399) ... Instead of building the benchmarks separately via CMake and running them separately from the test suite, this patch merges the benchmarks into the test suite and handles both uniformly. As a result: - It is now possible to run individual benchmarks like we run tests (e.g. using libcxx-lit), which is a huge quality-of-life improvement. - The benchmarks will be run under exactly the same configuration as the rest of the tests, which is a nice simplification. This does mean that one has to be careful to enable the desired optimization flags when running benchmarks, but that is easy with e.g. `libcxx-lit <...> --param optimization=speed`. - Benchmarks can use the same annotations as the rest of the test suite, such as `// UNSUPPORTED` & friends. When running the tests via `check-cxx`, we only compile the benchmarks because running them would be too time consuming. This introduces a bit of complexity in the testing setup, and instead it would be better to allow passing a --dry-run flag to GoogleBenchmark executables, which is the topic of https://github.com/google/benchmark/issues/1827. I am not really satisfied with the layering violation of adding the %{benchmark_flags} substitution to cmake-bridge, however I believe this can be improved in the future.	2024-11-07 09:07:50 -05:00
Nikolas Klauser	c6f3b7bcd0	[libc++] Refactor the configuration macros to being always defined (#112094) ... This is a follow-up to #89178. This updates the `<__config_site>` macros.	2024-11-06 10:39:19 +01:00
A. Jiang	76b71c0bc4	[libc++] Set __cpp_lib_smart_ptr_for_overwrite (#114700) ... The features were implemented in LLVM 16, but mistakenly considered unimplemented in FTM tools.	2024-11-05 13:27:40 +08:00
h-vetinari	8b19d29a3f	[libc++] remove minor version in status pages (#113241) ... Minor version of releases starts at `N.1.0` for all releases since 4532617ae42005. The current status pages are not terribly wrong (the version during development can be considered `N.0`), but still it's kinda weird to use versions that never get released as the lower bound.	2024-11-04 10:48:50 -05:00
Louis Dionne	dfe737f231	[libc++] Apply post-commit review comments for unique_ptr<T[]> hardening (#111704)	2024-11-04 10:45:12 -05:00
A. Jiang	63eb40eeb1	[libc++] Deprecate and remove meaningless <cxxx> headers (#111615) ... This PR deprecates `<ccomplex>`, `<cstdbool>`, `<ctgmath>`, and `<ciso646>` in C++17 and "removes" them in C++20 by special deprecation warnings. `<cstdalign>` is previously missing. This PR also tries to add them, and then deprecates and "removes" `<cstdalign>`. Papers: - https://wg21.link/P0063R3 - https://wg21.link/P0619R4 Closes #99985. --------- Co-authored-by: Louis Dionne <ldionne.2@gmail.com>	2024-10-30 09:49:26 +08:00
Louis Dionne	c9d9dc9c24	[libc++] Remove _LIBCPP_ENABLE_ASSERTIONS, which had been deprecated (#113592)	2024-10-29 10:48:18 -04:00
Hui	0be1883c36	[libc++] Implement P0429R9 std::flat_map (#98643) ... Around half of the tests are based on the tests Arthur O'Dwyer's original implementation of std::flat_map, with modifications and removals. partially implement #105190	2024-10-26 18:58:53 +01:00
A. Jiang	cae351f345	[libc++] Bump __cpp_lib_optional and __cpp_lib_variant (#113650) ... In C++20 mode, `__cpp_lib_optional` and `__cpp_lib_variant` should be `202106L` due to DR P2231R1. In C++26 mode, `__cpp_lib_variant` should be bumped to `202306L` due to P2637R3. - Clang 16/17 shouldn't get this bumping (as member `visit` requires explicit object parameters), but it's very tricky to make the bumping conditionally enabled. I _hope_ unconditionally bumping in C++26 will be OK for LLVM 20 when the support for Clang 17 is dropped. Related PRs: - https://reviews.llvm.org/D102119 - #83335 - #76447	2024-10-26 07:38:52 +08:00
Louis Dionne	d269ec321d	[libc++] Add a escape hatch for making __libcpp_verbose_abort non-noexcept again (#113310) ... This allows a slightly smoother transition for people after #109151, as requested on that PR.	2024-10-23 17:07:15 -04:00
Xiaoyang Liu	7c721999ca	[libc++][ranges] LWG4016: container-insertable checks do not match what container-inserter does (#113103) ... This patch implements LWG4016: container-insertable checks do not match what container-inserter does.	2024-10-23 10:04:50 -04:00
ZhangYin	2c3d7d5322	[libc++] <experimental/simd> Add unary operators for class simd (#104764)	2024-10-23 12:26:48 +08:00
Michael Jones	6c4267fb17	[libcxx][libc] Hand in Hand PoC with from_chars (#91651) ... Implements std::from_chars for float and double. The implementation uses LLVM-libc to do the real parsing. Since this is the first time libc++ uses LLVM-libc there is a bit of additional infrastructure code. The patch is based on the [RFC] Project Hand In Hand (LLVM-libc/libc++ code sharing) https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701	2024-10-21 15:04:06 -07:00
A. Jiang	397707f718	[libc++] __uglify non-conforming member typedef base (#112843) ... Currently, libc++'s `bitset`, `forward_list`, and `list` have non-conforming member typedef name `base`. The typedef is private, but can cause ambiguity in name lookup. Some other classes in libc++ that are either implementation details or not precisely specified by the standard also have member typdef `base`. I think this can still be conforming. Follows up #80706 and #111127.	2024-10-18 23:27:12 +08:00
Louis Dionne	e67442486d	[runtimes] Improve the documentation for LIBCXX_ADDITIONAL_COMPILE_FLAGS (#112733) ... This clarifies how that option is meant to be used to avoid confusion. As a drive-by, also fix an incorrect usage in the recently-added GPU caches.	2024-10-17 16:17:40 -04:00
Doug Wyatt	954836634a	[libc++] Make __libcpp_verbose_abort() noexcept like std::terminate() (#109151) ... Make __libcpp_verbose_abort() noexcept (it is already noreturn), to match std::terminate(). Clang's function effect analysis can use this to ignore such functions as being beyond its scope. (See https://github.com/llvm/llvm-project/pull/99656).	2024-10-17 10:38:29 -04:00
A. Jiang	cbe03646c6	[libc++][ranges] LWG3692: zip_view::iterator's operator<=> is overconstrained and changes of zip_view in P2165R4 (#112077) ... The changes are nearly pure simplifications, so I think it's OK to do them together in the same PR. Actual test coverages were already added in commit ad41d1e26b12 (https://reviews.llvm.org/D141216). Thanks to Casey Carter! Fixes #104975 Towards #105200	2024-10-16 09:34:31 -04:00
Adrian Vogelsgesang	7e16571eb0	[lldb][libc++] Hide all libc++ implementation details from stacktraces (#108870) ... This commit changes the libc++ frame recognizer to hide implementation details of libc++ more aggressively. The applied heuristic is rather straightforward: We consider every function name starting with `__` as an implementation detail. This works pretty neatly for `std::invoke`, `std::function`, `std::sort`, `std::map::emplace` and many others. Also, this should align quite nicely with libc++'s general coding convention of using the `__` for their implementation details, thereby keeping the future maintenance effort low. However, this heuristic by itself does not work in 100% of the cases: E.g., `std::ranges::sort` is not a function, but an object with an overloaded `operator()`, which means that there is no actual call `std::ranges::sort` in the call stack. Instead, there is a `std::ranges::__sort::operator()` call. To make sure that we don't hide this stack frame, we never hide the frame which represents the entry point from user code into libc++ code	2024-10-10 19:27:27 +02:00