llvm-project.git/libc/test/src/__support/hash_test.cpp, branch users/nico/python-1 Unnamed repository; edit this file 'description' to name the repository. [libc] Add `-Wno-sign-conversion` & re-attempt `-Wconversion` (#129811) 2025-03-10T15:57:09+00:00 Vinay Deshmukh 32487576+vinay-deshmukh@users.noreply.github.com 2025-03-10T15:57:09+00:00 257e48371546f75623482071fc39eef4b64fbd88 Relates to https://github.com/llvm/llvm-project/issues/119281#issuecomment-2699470459 
Relates to
https://github.com/llvm/llvm-project/issues/119281#issuecomment-2699470459
 Revert "[libc] Enable -Wconversion for tests. (#127523)" 2025-03-05T21:42:40+00:00 Augie Fackler augie@google.com 2025-03-05T18:52:31+00:00 da61b0ddc5dcc8f1ac64eaddabdbfec5aa23f22b This reverts commit 1e6e845d49a336e9da7ca6c576ec45c0b419b5f6 because it changed the 1st parameter of adjust() to be unsigned, but libc itself calls adjust() with a negative argument in align_backward() in op_generic.h. 
This reverts commit 1e6e845d49a336e9da7ca6c576ec45c0b419b5f6 because it
changed the 1st parameter of adjust() to be unsigned, but libc itself
calls adjust() with a negative argument in align_backward() in
op_generic.h.
[libc] Enable -Wconversion for tests. (#127523) 2025-03-04T15:24:35+00:00 Vinay Deshmukh 32487576+vinay-deshmukh@users.noreply.github.com 2025-03-04T15:24:35+00:00 1e6e845d49a336e9da7ca6c576ec45c0b419b5f6 Relates to: #119281 
Relates to: #119281
 [libc] fix build on aarch64 (#73739) 2023-11-29T03:39:00+00:00 Schrodinger ZHU Yifan yifanzhu@rochester.edu 2023-11-29T03:39:00+00:00 e399a317ef63d05991f6b15f74247eee6bfc5279 * avoid implicit narrowing conversion * move hsearch entrypoints to FULL_BUILD 
* avoid implicit narrowing conversion
* move hsearch entrypoints to FULL_BUILD
 [libc] [search] implement hcreate(_r)/hsearch(_r)/hdestroy(_r) (#73469) 2023-11-29T02:02:25+00:00 Schrodinger ZHU Yifan yifanzhu@rochester.edu 2023-11-29T02:02:25+00:00 81e3e7e5d455f85e070a27763c578df493716ae9 This patch implements `hcreate(_r)/hsearch(_r)/hdestroy(_r)` as specified in https://man7.org/linux/man-pages/man3/hsearch.3.html. Notice that `neon/asimd` extension is not yet added in this patch. - The implementation is largely simplified from rust's [`hashbrown`](https://github.com/rust-lang/hashbrown/blob/master/src/raw/mod.rs) as we only consider fix-sized insertion-only hashtables. Technical details are provided in code comments. - This patch also contains a portable string hash function, which is derived from [`aHash`](https://github.com/tkaitchuck/aHash)'s fallback routine. Not using any SIMD acceleration, it has a good enough quality (passing all SMHasher tests) and is not too bad in speed. - Some general functionalities are added, such as `memory_size`, `offset_to`(alignment), `next_power_of_two`, `is_power_of_two`. `ctz/clz` are extended to support shorter integers. 
This patch implements `hcreate(_r)/hsearch(_r)/hdestroy(_r)` as
specified in https://man7.org/linux/man-pages/man3/hsearch.3.html.

Notice that `neon/asimd` extension is not yet added in this patch. 

- The implementation is largely simplified from rust's
[`hashbrown`](https://github.com/rust-lang/hashbrown/blob/master/src/raw/mod.rs)
as we only consider fix-sized insertion-only hashtables. Technical
details are provided in code comments.

- This patch also contains a portable string hash function, which is
derived from [`aHash`](https://github.com/tkaitchuck/aHash)'s fallback
routine. Not using any SIMD acceleration, it has a good enough quality
(passing all SMHasher tests) and is not too bad in speed.

- Some general functionalities are added, such as `memory_size`,
`offset_to`(alignment), `next_power_of_two`, `is_power_of_two`.
`ctz/clz` are extended to support shorter integers.