259 Commits

Author SHA1 Message Date
Nikolas Klauser
f5be5cdaad
[Clang] Add __builtin_common_type (#99473)
This implements the logic of the `common_type` base template as a
builtin alias. If there should be no `type` member, an empty class is
returned. Otherwise a specialization of a `type_identity`-like class is
returned. The base template (i.e. `std::common_type`) as well as the
empty class and `type_identity`-like struct are given as arguments to
the builtin.
2024-09-22 09:25:52 +02:00
A. Jiang
94e7c0b051
[libc++] Remove get_temporary_buffer and return_temporary_buffer (#100914)
Works towards P0619R4 / #99985.

The use of `std::get_temporary_buffer` and `std::return_temporary_buffer`
are replaced with `unique_ptr`-based RAII buffer holder.

Escape hatches:
- `_LIBCPP_ENABLE_CXX20_REMOVED_TEMPORARY_BUFFER` restores
`std::get_temporary_buffer` and `std::return_temporary_buffer`.

Drive-by changes:
- In `<syncstream>`, states that `get_temporary_buffer` is now removed,
because `<syncstream>` is added in C++20.
2024-09-16 11:53:05 -04:00
Louis Dionne
04d3a6be62
[libc++][modules] Add a header to forward-declare std::get (#108285)
This is necessary because e.g. ranges::elements_view uses std::get but
it needs to have in scope the declaration of all the versions of
std::get that exist in the library. This need is what had originally led
to elements_view.h gaining an include of __fwd/complex.h, but in reality
it is a more general issue that requires a canonical declration point
for all the std::get variations.
2024-09-12 13:35:29 -04:00
Louis Dionne
118f120eaa
[libc++] Get rid of experimental/__config (#108233)
It doesn't serve much of a purpose since we can easily put its contents
inside __config. Removing it simplifies the modulemap once we are trying
to create a single top-level module.
2024-09-11 14:59:43 -04:00
Louis Dionne
f8350f1302
[libc++][modules] Introduce a forward-declaration for std::byte (#107402)
We need a forward-declaration so that we can know about std::byte from
some type traits without having to include std::byte's definition, which
(circularly) depends back on type traits.
2024-09-06 12:11:20 -04:00
Louis Dionne
d6832a611a
[libc++][modules] Modularize <cstddef> (#107254)
Many headers include `<cstddef>` just for size_t, and pulling in
additional content (e.g. the traits used for std::byte) is unnecessary.
To solve this problem, this patch splits up `<cstddef>` into
subcomponents so that headers can include only the parts that they
actually require.

This has the added benefit of making the modules build a lot stricter
with respect to IWYU, and also providing a canonical location where we
define `std::size_t` and friends (which were previously defined in
multiple headers like `<cstddef>` and `<ctime>`).

After this patch, there's still many places in the codebase where we
include `<cstddef>` when `<__cstddef/size_t.h>` would be sufficient.
This patch focuses on removing `<cstddef>` includes from __type_traits
to make these headers non-circular with `<cstddef>`. Additional
refactorings can be tackled separately.
2024-09-05 08:28:33 -04:00
Louis Dionne
5e19fd1720
[libc++][modules] Consolidate leaf modules into their own top-level modules (#107147)
Some modules are leaf modules in the sense that they are not used by any
other part of the headers. These leaf modules are easy to consolidate
since there is no risk to create a cycle. As a result of regrouping
these modules, several missing includes were found and fixed in this
patch.
2024-09-04 16:39:55 -04:00
Louis Dionne
c1a8283fcc
[libc++][modules] Move __noexcept_move_assign_container out of __type_traits (#107140)
That header depends on allocator traits, which is fundamentally tied to
`<memory>`, not to `<type_traits>`. This breaks a cycle betweeen
__type_traits and __memory.
2024-09-04 11:18:30 -04:00
Louis Dionne
57fe53cae4
[libc++] First attempt to regroup a few modules in the modulemap (#98214)
We split up all the headers into top-level modules when we broke up
cycles with the C compatibility headers. However, this resulted in a
large number of small modules, which is awkward and clearly against the
philosophy of Clang modules. This was necessary to make things work.

This patch regroups a few headers from two leaf modules: stop_token and
pstl. It should be pretty uncontroversial that grouping these headers
into a single module doesn't introduce any cyclic dependency, yet it's a
first step towards reducing the number of top-level modules we have in
our modulemap.
2024-08-30 16:54:09 -04:00
PaulXiCao
af0d731b12
[libc++][math] Mathematical Special Functions: Hermite Polynomial (#89982)
Implementing the Hermite polynomials which are part of C++17's
mathematical special functions. The goal is to get early feedback which
will make implementing the other functions easier. Integration of
functions in chunks (e.g. `std::hermite` at first, then `std::laguerre`,
etc.) might make sense as well (also see note on boost.math below).

I started out from this abandoned merge request:
https://reviews.llvm.org/D58876 .

The C++23 standard defines them in-terms of `/* floating-point type */`
arguments. I have not looked into that.

Note, there is still an ongoing discussion on discourse whether
importing boost.math is an option.
2024-07-20 17:50:05 +02:00
nicole mazzuca
04760bfadb
[libc++][ranges] P1223R5: find_last (#99312)
Implements [P1223R5][] completely.

Includes an implementation of `find_last`, `find_last_if`, and
`find_last_if_not`.

[P1223R5]: https://wg21.link/p1223r5
2024-07-19 09:42:16 -07:00
Hristo Hristov
e475bb7ac3
[libc++][memory] P1132R8: out_ptr - a scalable output pointer abstraction (#73618)
Differential Revision: https://reviews.llvm.org/D150525

Implements:
- https://wg21.link/P1132R8 - `out_ptr` - a scalable output pointer
abstraction
- https://eel.is/c++draft/smartptr.adapt - 20.3.4 Smart pointer adaptors
- https://wg21.link/LWG3734 - Inconsistency in `inout_ptr` and `out_ptr`
for empty case
- https://wg21.link/LWG3897- `inout_ptr` will not update raw pointer to
0

---------

Co-authored-by: Hristo Hristov <zingam@outlook.com>
2024-07-19 06:38:02 +03:00
Nikolas Klauser
4dfa75c663
[libc++] Merge is_scoped_enum.h into is_enum.h (#99458) 2024-07-18 15:17:22 +02:00
Nikolas Klauser
dfddc0c484
[libc++] Include the rest of the detail headers by version in the umbrella headers (#96032)
This is a follow-up to #83740.
2024-07-18 10:59:58 +02:00
Nikolas Klauser
0eebb48fcf
[libc++] Merge is_member{,_object,_function}_pointer.h (#98727)
The implementations for these traits have been simplified quite a bit,
since we have builtins available for them now.
2024-07-16 14:40:05 +02:00
Hristo Hristov
31c9c41873
[libc++][tuple][utility] P2968R2: Make std::ignore a first-class object (#97401)
Implements:  https://wg21.link/P2968R2

References:
- https://eel.is/c++draft/tuple.general
- https://eel.is/c++draft/tuple.syn
- https://eel.is/c++draft/tuple.creation
- https://github.com/cplusplus/draft/milestone/31
- https://github.com/cplusplus/draft/pull/7109
- https://github.com/cplusplus/papers/issues/1640
- https://cplusplus.github.io/LWG/issue2933
- https://cplusplus.github.io/LWG/issue3978

---------

Co-authored-by: Hristo Hristov <zingam@outlook.com>
2024-07-11 00:05:23 +03:00
Louis Dionne
9540950a45
[libc++] Overhaul the PSTL dispatching mechanism (#88131)
The experimental PSTL's current dispatching mechanism was designed with
flexibility in mind. However, while reviewing the in-progress OpenMP
backend, I realized that the dispatching mechanism based on ADL and
default definitions in the frontend had several downsides. To name a
few:

1. The dispatching of an algorithm to the back-end and its default
   implementation is bundled together via `_LIBCPP_PSTL_CUSTOMIZATION_POINT`.
   This makes the dispatching really confusing and leads to annoyances
   such as variable shadowing and weird lambda captures in the front-end.
2. The distinction between back-end functions and front-end algorithms
   is not as clear as it could be, which led us to call one where we meant
   the other in a few cases. This is bad due to the exception requirements
   of the PSTL: calling a front-end algorithm inside the implementation of
   a back-end is incorrect for exception-safety.
3. There are two levels of back-end dispatching in the PSTL, which treat
   CPU backends as a special case. This was confusing and not as flexible
   as we'd like. For example, there was no straightforward way to dispatch
   all uses of `unseq` to a specific back-end from the OpenMP backend,
   or for CPU backends to fall back on each other.

This patch rewrites the backend dispatching mechanism to solve these
problems, but doesn't touch any of the actual implementation of
algorithms. Specifically, this rewrite has the following
characteristics:

- There is a single level of backend dispatching, however partial backends can
  be stacked to provide a full implementation of the PSTL. The two-level dispatching
  that was used for CPU-based backends is handled by providing CPU-based basis 
  operations as simple helpers that can easily be reused when defining any PSTL 
  backend.

- The default definitions for algorithms are separated from their dispatching logic.

- The front-end is thus simplified a whole lot and made very consistent
  for all algorithms, which makes it easier to audit the front-end for
  things like exception-correctness, appropriate forwarding, etc.

Fixes #70718
2024-06-12 12:24:34 -04:00
Mark de Wever
151bd7cab4
[libc++][TZDB] Implements zoned_traits. (#91059)
Implements parts of:
- P0355 Extending chrono to Calendars and Time Zones
2024-06-10 17:13:08 +02:00
Mark de Wever
77116bd7d2
[libc++][TZDB] Implements time_zone::to_sys. (#90394)
This implements the throwing overload and the exception classes throw by
this overload.

Implements parts of:
- P0355 Extending chrono to Calendars and Time Zones
2024-06-10 00:33:39 +02:00
Louis Dionne
04f01a2b9c
[libc++] Make the __availability header a sub-header of __config (#93083)
In essence, this header has always been related to configuration of
the library but we didn't want to put it inside <__config> due to
complexity reasons. Now that we have sub-headers in <__config>, we
can move <__availability> to it and stop including it everywhere since
we already obtain the required macros via <__config>.
2024-05-28 18:29:11 -07:00
Louis Dionne
23e1ed65c2
[libc++] Split up ABI and platform configuration to their own headers (#90863)
This is a first step towards splitting up the <__config> header. The
<__config> header is large and rather disorganized at this point,
leading to confusion and subtle mistakes. For example, we never noticed
that the string layout used on arm64 was only enabled for the Clang
compiler, as the setting being in the compiler == clang block was
probably never intentional.

The danger of splitting up the <__config> header is to implicitly use
undefined macros that should have been defined prior to their usage,
however this can be remediated with -Wundef and we've started moving
towards -Wundef enforceable macros.
2024-05-28 07:22:06 -04:00
Louis Dionne
e406d5ed9c
[libc++][pstl] Merge all frontend functions for the PSTL (#89219)
This is an intermediate step towards the PSTL dispatching mechanism
rework. It will make it a lot easier to track the upcoming front-end
changes. After the rework, there are basically no implementation details
in the front-end, so the definition of each algorithm will become much
simpler. Otherwise, it wouldn't make sense to define all the algorithms
in the same header.
2024-05-27 17:51:12 -04:00
Damien L-G
42ba740aff
[libc++] Implement C++20 atomic_ref (#76647)
Implement the std::atomic_ref class template by reusing atomic_base_impl.
Based on the work from https://reviews.llvm.org/D72240
2024-05-21 15:54:08 -07:00
Nikolas Klauser
05cc2d5fe1
[libc++] Vectorize std::mismatch with trivially equality comparable types (#87716) 2024-05-11 23:32:48 +02:00
Nikolas Klauser
05f88b1769
[libc++][NFC] Replace __apply_cv with __copy_cv or __copy_cvref (#90867)
`__apply_cv_t` and `__copy_cvref_t` are very closely related. They are
in fact identical except that `__copy_cvref_t` handles rvalue references
properly. Some uses don't actually require handling of references, so
they are replaced with `__copy_cv_t`.
2024-05-10 20:06:21 +02:00
Nikolas Klauser
17f006207c
[libc++] Granularize <ostream> (#85537)
This also includes `<__ostream/basic_ostream.h>` in `<sstream>` now,
reducing the include time of `<complex>` from 819ms to 603ms.
2024-05-02 22:38:44 +02:00
Nikolas Klauser
83bc7b5771
[libc++] Remove _LIBCPP_DISABLE_NODISCARD_EXTENSIONS and refactor the tests (#87094)
This also adds a few tests that were missing.
2024-04-22 22:13:58 +02:00
Mark de Wever
8a21d59f29
[libc++][TZDB] Adds local_info formatter. (#86256)
This adds the local_info type and its formatting options.
The usage of the local_info object will be done in separate patches.

Implements parts of:
- P0355 Extending to Calendars and Time Zones
- P1361 Integration of chrono with text formatting
2024-04-18 17:23:07 +02:00
Louis Dionne
0e08bce142
[libc++][pstl] Move the CPU algorithm implementations to __pstl (#89109)
This colocates the CPU algorithms closer to the rest of the PSTL
implementation details.
2024-04-18 07:50:57 -04:00
Louis Dionne
d423d80e56
[libc++][pstl] Promote CPU backends to top-level backends (#88968)
This patch removes the two-level backend dispatching mechanism we had in
the PSTL. Instead of selecting both a PSTL backend and a PSTL CPU
backend, we now only select a top-level PSTL backend. This greatly
simplifies the PSTL configuration layer.

While this patch technically removes some flexibility from the PSTL
configuration mechanism because CPU backends are not considered
separately, it opens the door to a much more powerful configuration
mechanism based on chained backends in a follow-up patch.

This is a step towards overhauling the PSTL dispatching mechanism.
2024-04-17 13:36:53 -04:00
Louis Dionne
a06073f91e
[libc++] Add a utility to check whether a range is valid (#87665)
In the future, this utility could be made to also work with iterators,
including bounded iterators. We could also query the ASAN runtime for
this information when it's around.
2024-04-15 10:45:26 -04:00
Louis Dionne
a3ce29f7bb
[libc++][PSTL] Introduce cpu traits (#88134)
Currently, CPU backends in the PSTL are created by defining functions
in the __par_backend namespace. Then, the PSTL includes the CPU backend
that gets configured via CMake and gets those definitions.

This prevents CPU backends from easily co-existing and is a bit
confusing.
To solve this problem, this patch introduces the notion of __cpu_traits,
which is a cheap encapsulation of the basis operations required to
implement a CPU-based PSTL. Different backends can now define their own
tag and coexist, and the CPU-based PSTL will simply use __cpu_traits to
dispatch to the right implementation of e.g. __for_each.

Note that this patch doesn't change the actual implementation of the
backends in any way, it only modifies how that implementation is
accessed
to implement PSTL algorithms.

This patch is a step towards #88131.
2024-04-15 10:30:00 -04:00
Nikolas Klauser
d5c654b5b7
[libc++][RFC] Only include what is required by-version in the umbrella headers (#83740)
This is a relatively low cost way of reducing the include sizes in older
language modes compared to the effect. For example, in C++14 mode the
include time of `<algorithm>` is reduced from 198ms to 127ms.
2024-04-14 15:52:56 +02:00
Nikolas Klauser
61f1f13002
[libc++][NFC] Move basic ASan annotation functions into a utility header (#87220) 2024-04-13 18:24:12 +02:00
Mark de Wever
0a1317564a
[libc++] Adds a global private constructor tag. (#87920)
This removes the similar tags used in the chrono tzdb implementation.

Fixes: https://github.com/llvm/llvm-project/issues/85432
2024-04-10 20:34:58 +02:00
Mark de Wever
1fda1776e3
[libc++][chrono] Adds the sys_info class. (#85619)
Adds the sys_info class and time_zone::get_info(). The code still has a
few quirks and has not been optimized for performance yet.

The returned sys_info is compared against the output of the zdump tool
in the test giving confidence the implementation is correct.

Implements parts of:
- P0355 Extending <chrono> to Calendars and Time Zones

Implements:
- LWGXXXX The sys_info range should be affected by save
2024-04-10 07:50:17 +02:00
Mark de Wever
59e66c515a
[libc++][format] Switches to Unicode 15.1. (#86543)
In addition to changes in the tables the extended grapheme clustering
algorithm has been overhauled. Before I considered a separate state
machine to implement the rules. With the new rule GB9c this became more
attractive and the design has changed.

This change initially had quite an impact on the performance. By making
the state machine persistent the performance was improved greatly. Note
it is still slower than before due to the larger Unicode tables.

Before
--------------------------------------------------------------------
Benchmark                          Time             CPU   Iterations
--------------------------------------------------------------------
BM_ascii_text<char>             1891 ns         1889 ns       369504
BM_unicode_text<char>         106642 ns       106397 ns         6576
BM_cyrillic_text<char>         73420 ns        73277 ns         9445
BM_japanese_text<char>         62485 ns        62387 ns        11153
BM_emoji_text<char>             1895 ns         1893 ns       369525
BM_ascii_text<wchar_t>          2015 ns         2013 ns       346887
BM_unicode_text<wchar_t>       92119 ns        92017 ns         7598
BM_cyrillic_text<wchar_t>      62637 ns        62568 ns        11117
BM_japanese_text<wchar_t>      53850 ns        53785 ns        12803
BM_emoji_text<wchar_t>          2016 ns         2014 ns       347325

After
--------------------------------------------------------------------
Benchmark                          Time             CPU   Iterations
--------------------------------------------------------------------
BM_ascii_text<char>             1906 ns         1904 ns       369409
BM_unicode_text<char>         265462 ns       265175 ns         2628
BM_cyrillic_text<char>        181063 ns       180865 ns         3871
BM_japanese_text<char>        130927 ns       130789 ns         5324
BM_emoji_text<char>             1892 ns         1890 ns       370537
BM_ascii_text<wchar_t>          2038 ns         2035 ns       343689
BM_unicode_text<wchar_t>      277603 ns       277282 ns         2526
BM_cyrillic_text<wchar_t>     188558 ns       188339 ns         3727
BM_japanese_text<wchar_t>     133084 ns       132943 ns         5262
BM_emoji_text<wchar_t>          2012 ns         2010 ns       348015

Persistent
--------------------------------------------------------------------
Benchmark                          Time             CPU   Iterations
--------------------------------------------------------------------
BM_ascii_text<char>             1904 ns         1899 ns       367472
BM_unicode_text<char>         133609 ns       133287 ns         5246
BM_cyrillic_text<char>         90185 ns        89941 ns         7796
BM_japanese_text<char>         75137 ns        74946 ns         9316
BM_emoji_text<char>             1906 ns         1901 ns       368081
BM_ascii_text<wchar_t>          2703 ns         2696 ns       259153
BM_unicode_text<wchar_t>      131497 ns       131168 ns         5341
BM_cyrillic_text<wchar_t>      87071 ns        86840 ns         8076
BM_japanese_text<wchar_t>      72279 ns        72099 ns         9682
BM_emoji_text<wchar_t>          2021 ns         2016 ns       346767
2024-04-09 19:20:06 +02:00
Nikolas Klauser
f5960c168d
[libc++][NFC] Make __desugars_to a variable template and rename the header to desugars_to.h (#87337)
This improves compile times and memory usage slightly and removes some
boilerplate.
2024-04-04 23:02:19 +02:00
Mark de Wever
6f2d8cc061
[libc++][chrono] Loads leap-seconds.list in tzdb. (#82113)
This implements the loading of the leap-seconds.list file and store its
contents in the tzdb struct.

This adds the required `leap_seconds` member.

The class leap_seconds is fully implemented including its non-member
functions.

Implements parts of:
- P0355 Extending <chrono> to Calendars and Time Zones
- P1614 The Mothership has Landed

Implements:
- P1981 Rename leap to leap_second
- LWG3359 <chrono> leap second support should allow for negative leap
seconds
- LWG3383 §[time.zone.leap.nonmembers] sys_seconds should be replaced
with seconds
2024-04-03 18:15:24 +02:00
Nikolas Klauser
239236b8c2
[libc++] Remove pair dependency (#85621)
This moves the definition of a `pair` constructor for `<tuple>` to
`<__utility/pair.h>` and uses the forward declaration of `pair` in
`<tuple>` instead of including the definition.
2024-04-02 19:37:31 +02:00
Nikolas Klauser
1679b27959
[libc++] Refactor __tuple_like and __pair_like (#85206)
The exposition-only type trait `pair-like` includes `ranges::subrange`,
but in every single case excludes `ranges::subrange` from the list. This
patch introduces two new traits `__tuple_like_no_subrange` and
`__pair_like_no_subrange`, which exclude `ranges::subrange` from the
possible matches. `__pair_like` is no longer required, and thus removed.
`__tuple_like` is implemented as `__tuple_like_no_subrange` or a
`ranges::subrange` specialization.
2024-04-01 08:46:57 +02:00
Nikolas Klauser
316634ff59
[libc++] Remove <queue> and <stack> includes from <format> (#85520)
This reduces the include time of <format> from 691ms to 556ms.
2024-03-29 12:06:09 +01:00
Nikolas Klauser
b68e2eba0b
[libc++] Vectorize mismatch (#73255)
```
---------------------------------------------------
Benchmark                           old         new
---------------------------------------------------
bm_mismatch<char>/1           0.835 ns      2.37 ns
bm_mismatch<char>/2            1.44 ns      2.60 ns
bm_mismatch<char>/3            2.06 ns      2.83 ns
bm_mismatch<char>/4            2.60 ns      3.29 ns
bm_mismatch<char>/5            3.15 ns      3.77 ns
bm_mismatch<char>/6            3.82 ns      4.17 ns
bm_mismatch<char>/7            4.29 ns      4.52 ns
bm_mismatch<char>/8            4.78 ns      4.86 ns
bm_mismatch<char>/16           9.06 ns      7.54 ns
bm_mismatch<char>/64           31.7 ns      19.1 ns
bm_mismatch<char>/512           249 ns      8.16 ns
bm_mismatch<char>/4096         1956 ns      44.2 ns
bm_mismatch<char>/32768       15498 ns       501 ns
bm_mismatch<char>/262144     123965 ns      4479 ns
bm_mismatch<char>/1048576    495668 ns     21306 ns
bm_mismatch<short>/1          0.710 ns      2.12 ns
bm_mismatch<short>/2           1.03 ns      2.66 ns
bm_mismatch<short>/3           1.29 ns      3.56 ns
bm_mismatch<short>/4           1.68 ns      4.29 ns
bm_mismatch<short>/5           1.96 ns      5.18 ns
bm_mismatch<short>/6           2.59 ns      5.91 ns
bm_mismatch<short>/7           2.86 ns      6.63 ns
bm_mismatch<short>/8           3.19 ns      7.33 ns
bm_mismatch<short>/16          5.48 ns      13.0 ns
bm_mismatch<short>/64          16.6 ns      4.06 ns
bm_mismatch<short>/512          130 ns      13.8 ns
bm_mismatch<short>/4096         985 ns      93.8 ns
bm_mismatch<short>/32768       7846 ns      1002 ns
bm_mismatch<short>/262144     63217 ns     10637 ns
bm_mismatch<short>/1048576   251782 ns     42471 ns
bm_mismatch<int>/1            0.716 ns      1.91 ns
bm_mismatch<int>/2             1.21 ns      2.49 ns
bm_mismatch<int>/3             1.38 ns      3.46 ns
bm_mismatch<int>/4             1.71 ns      4.04 ns
bm_mismatch<int>/5             2.00 ns      4.98 ns
bm_mismatch<int>/6             2.43 ns      5.67 ns
bm_mismatch<int>/7             3.05 ns      6.38 ns
bm_mismatch<int>/8             3.22 ns      7.09 ns
bm_mismatch<int>/16            5.18 ns      12.8 ns
bm_mismatch<int>/64            16.6 ns      5.28 ns
bm_mismatch<int>/512            129 ns      25.2 ns
bm_mismatch<int>/4096          1009 ns       201 ns
bm_mismatch<int>/32768         7776 ns      2144 ns
bm_mismatch<int>/262144       62371 ns     20551 ns
bm_mismatch<int>/1048576     254750 ns     90097 ns
```
2024-03-23 15:28:22 +01:00
Nikolas Klauser
580f60484e
[libc++][NFC] Merge is{,_nothrow,_trivially}{,_copy,_move,_default}{_assignable,_constructible} (#85308)
These headers have become very small by using compiler builtins, often
containing only two declarations. This merges these headers, since
there doesn't seem to be much of a benefit keeping them separate.

Specifically, `is_{,_nothrow,_trivially}{assignable,constructible}` are
kept and the `copy`, `move` and `default` versions of these type traits
are moved in to the respective headers.
2024-03-18 08:29:44 +01:00
Nikolas Klauser
2a38551457
[libc++] Remove <tuple> from <variant> (#83183)
This moves a utility from `<tuple>` into an implementation detail header
and refactors the selection of the variant index type to use.
2024-03-11 14:04:51 +01:00
Nikolas Klauser
0876668114
[libc++][NFC] Move __format/format_fwd.h to __fwd/format.h (#84336) 2024-03-08 20:43:10 +01:00
Louis Dionne
6fd27d5b03
[libc++] Don't generate the modulemap file (#80352)
We actually didn't generate anything in that file, so generating it via
CMake is useless.
2024-03-04 18:16:16 -05:00
Louis Dionne
0e9a01dcac [libc++] Fix modules builds when features are removed
When some headers are not available because we removed features like
localization or threads, the compiler should not try to include these
headers when building modules. To avoid that from happening, add a
requires-declaration that is never satisfied when the configuration
in use doesn't support a header.

rdar://93777687

Differential Revision: https://reviews.llvm.org/D127127
2022-06-08 18:48:25 -04:00
Nikolas Klauser
916e9052ba [libc++] Implement ranges::adjacent_find
Reviewed By: Mordante, var-const, #libc

Spies: libcxx-commits, mgorny

Differential Revision: https://reviews.llvm.org/D126610
2022-06-08 12:15:03 +02:00
Nikolas Klauser
b79b2b6772 [libc++] Implement ranges::find_first_of
Reviewed By: Mordante, var-const, #libc

Spies: libcxx-commits, mgorny

Differential Revision: https://reviews.llvm.org/D126529
2022-06-06 22:29:02 +02:00