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Mohamed Emad 4840895467 [libc] implement memalignment (#132493) 
This patch adds the `memalignment` function to LLVM-libc, following its
description in [WG14 N3220,
§7.24.2.1](https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3220.pdf#page=387).

- [x] Add the implementation of `memalignment` in
[`/src/stdlib`](https://github.com/llvm/llvm-project/tree/main/libc/src/stdlib)
- [x] Add tests for `memalignment` in
[`/test/src/stdlib`](https://github.com/llvm/llvm-project/tree/main/libc/test/src/stdlib)
- [x] Add `memalignment` to
[`entrypoints.txt`](https://github.com/llvm/llvm-project/blob/main/libc/config/linux/x86_64/entrypoints.txt)
for at least x86_64 and whatever you're building on
- [x] Add `memalignment` to
[`include/stdlib.yaml`](https://github.com/llvm/llvm-project/blob/main/libc/include/stdlib.yaml)




Closes #132300

---------

Co-authored-by: Joseph Huber <huberjn@outlook.com>
2025-03-28 16:07:57 -07:00
..
baremetal
[libc] Breakup freelist_malloc into separate files (#119806)
2024-12-16 10:30:27 -08:00
gpu
[libc] Use the NVIDIA device allocator for GPU malloc (#124277)
2025-01-24 10:17:20 -06:00
linux
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
_Exit.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
_Exit.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
a64l.cpp
[libc] implement l64a (#129099)
2025-02-27 12:48:39 -08:00
a64l.h
[libc] implement a64l (#128758)
2025-02-25 13:57:13 -08:00
abort.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
abs.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
abs.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
aligned_alloc.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
at_quick_exit.cpp
[libc] Fix callback type in exit_handlers.cpp not matching (#97642)
2024-07-22 15:28:48 -05:00
at_quick_exit.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atexit.cpp
[libc] fix tls teardown while being used (#108229)
2024-09-11 12:22:35 -04:00
atexit.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atof.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atof.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atoi.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atoi.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atol.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atol.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atoll.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
atoll.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
bsearch.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
bsearch.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
calloc.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
CMakeLists.txt
[libc] implement memalignment (#132493)
2025-03-28 16:07:57 -07:00
div.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
div.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
exit_handler.h
[libc] Add hardening for FixedVector data structure and fix exposed bug. (#122159)
2025-01-08 13:03:59 -08:00
exit.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
exit.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
free.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
getenv.cpp
[libc] Implement 'getenv' on the GPU target (#102376)
2024-08-08 06:45:42 -05:00
getenv.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
heap_sort.h
[libc] Improve qsort (with build fix) (#121482)
2025-01-05 06:10:41 +08:00
l64a.cpp
[libc] implement l64a (#129099)
2025-02-27 12:48:39 -08:00
l64a.h
[libc] implement l64a (#129099)
2025-02-27 12:48:39 -08:00
labs.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
labs.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
ldiv.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
ldiv.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
llabs.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
llabs.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
lldiv.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
lldiv.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
malloc.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
memalignment.cpp
[libc] implement memalignment (#132493)
2025-03-28 16:07:57 -07:00
memalignment.h
[libc] implement memalignment (#132493)
2025-03-28 16:07:57 -07:00
qsort_data.h
[libc] Improve qsort (with build fix) (#121482)
2025-01-05 06:10:41 +08:00
qsort_pivot.h
[libc] Add a missing include
2025-03-04 08:54:46 +01:00
qsort_r.cpp
[libc] Improve qsort (with build fix) (#121482)
2025-01-05 06:10:41 +08:00
qsort_r.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
qsort_util.h
[libc] Improve qsort (with build fix) (#121482)
2025-01-05 06:10:41 +08:00
qsort.cpp
[libc] Improve qsort (with build fix) (#121482)
2025-01-05 06:10:41 +08:00
qsort.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
quick_exit.cpp
[libc] fix tls teardown while being used (#108229)
2024-09-11 12:22:35 -04:00
quick_exit.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
quick_sort.h
[libc] Add -Wno-sign-conversion & re-attempt -Wconversion (#129811)
2025-03-10 11:57:09 -04:00
rand_util.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
rand_util.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
rand.cpp
[libc] Change rand implementation so all tests pass in both 32- and 64-bit systems (#98692)
2024-07-17 12:01:26 -03:00
rand.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
realloc.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
srand.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
srand.h
[libc] Remove the #include <stdlib.h> header (#114453)
2024-11-01 21:49:57 -07:00
str_from_util.h
[libc] Template the writing mode for the writer class (#111559)
2025-03-12 13:51:44 -05:00
strfromd.cpp
[libc] Template the writing mode for the writer class (#111559)
2025-03-12 13:51:44 -05:00
strfromd.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strfromf.cpp
[libc] Template the writing mode for the writer class (#111559)
2025-03-12 13:51:44 -05:00
strfromf.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strfroml.cpp
[libc] Template the writing mode for the writer class (#111559)
2025-03-12 13:51:44 -05:00
strfroml.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtod_l.cpp
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtod_l.h
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtod.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtod.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtof_l.cpp
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtof_l.h
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtof.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtof.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtol_l.cpp
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtol_l.h
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtol.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtol.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtold_l.cpp
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtold_l.h
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtold.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtold.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtoll_l.cpp
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtoll_l.h
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtoll.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtoll.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtoul_l.cpp
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtoul_l.h
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtoul.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtoul.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtoull_l.cpp
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtoull_l.h
[libc] Implement locale variants for 'stdlib.h' functions (#105718)
2024-08-29 14:18:37 -05:00
strtoull.cpp
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
strtoull.h
[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
2024-07-12 09:28:41 -07:00
system.h
[libc] Add GPU support for the 'system' function (#109687)
2024-09-23 14:04:28 -07:00