Commit Graph

326 Commits

Author SHA1 Message Date
Corentin Jabot da1609ad73 Improve the formatting of static_assert messages
Display 'static_assert failed: message' instead of
'static_assert failed "message"' to be consistent
with other implementations and be slightly more
readable.

Reviewed By: #libc, aaron.ballman, philnik, Mordante

Differential Revision: https://reviews.llvm.org/D128844
2022-06-30 23:59:21 +02:00
Nikolas Klauser 681cde7dd8 [libc++] Complete the implementation of N4190
Fixes #37402

Reviewed By: ldionne

Spies: EricWF, avogelsgesang, libcxx-commits, arphaman

Differential Revision: https://reviews.llvm.org/D124346
2022-06-22 10:13:03 +02:00
Louis Dionne ee78181f34 [libc++] Remove macros for IBM compiler
It's not tested or used anymore -- instead a Clang-based compiler is
used on IBM nowadays.

Differential Revision: https://reviews.llvm.org/D127650
2022-06-14 09:15:41 -04:00
Jake Egan 1cf4113952 [libcxx][AIX] Switch build compiler to clang
This patch switches the build compiler for AIX from ibm-clang to clang. ibm-clang++_r has `-pthread` by default, but clang for AIX doesn't, so `-pthread` had to be added to the test config. A bunch of tests now pass, so the `XFAIL` was removed. This patch also switch the build to use the visibility support available in clang-15 to control symbols exported by the shared library (AIX traditionally uses explicit export lists for this purpose).

Reviewed By: #libc, #libc_abi, daltenty, #libunwind, ldionne

Differential Revision: https://reviews.llvm.org/D127470
2022-06-13 21:45:18 -04:00
Nikolas Klauser 3cd4531b9b [libc++] Granularize <iterator> includes
Reviewed By: ldionne, #libc

Spies: libcxx-commits, wenlei

Differential Revision: https://reviews.llvm.org/D127445
2022-06-10 22:43:57 +02:00
Nikolas Klauser 976f37050d [libc++] Granularize __string
Reviewed By: ldionne, #libc

Spies: libcxx-commits, mgorny

Differential Revision: https://reviews.llvm.org/D127156
2022-06-09 21:04:18 +02:00
Joe Loser 4fc502368a
[libc++][test] Skip string_view tests for other vendors on older modes
`string_view` is supported all the way back to C++03 as an extension in
`libc++`, and so many of the tests run in all standards modes for all vendors.
This is unlikely desired by other standard library vendors using our test suite.
So, disable the tests for vendors other than `libc++` in these older standards
modes.

Differential Revision: https://reviews.llvm.org/D126850
2022-06-03 13:51:49 -06:00
Nikolas Klauser ef8e918261 [libc++] Forward more often to memmove in copy
In D122982 I accidentally disabled the memmove optimization. This re-enables it and adds more cases where copy forwards to memmove.
Fixes https://github.com/llvm/llvm-project/issues/33687

Reviewed By: var-const, #libc, ldionne

Spies: pkasting, ayzhao, dcheng, xbolva00, libcxx-commits

Differential Revision: https://reviews.llvm.org/D124328
2022-06-03 20:29:18 +02:00
Joe Loser 4be36dc77f
[libc++][test] Fix unused variable warning in string_view tests
In 6423a9f0ec, I accidentally thought this was
getting tested, but these variables are unused. Just remove the lines instead of
leaving them commented out.

Differential Revision: https://reviews.llvm.org/D126901
2022-06-02 13:33:37 -06:00
Joe Loser 6423a9f0ec
[libc++][test] Enable some more string_view tests
Some test cases for `ends_with.ptr.pass` and `starts_with.ptr.pass` for
`string_view` are commented out, but work just fine. Uncomment them.

Differential Revision: https://reviews.llvm.org/D126849
2022-06-02 08:56:02 -06:00
Joe Loser 93a375a15c
[libc++][test] Enable constexpr string comparison tests
Some tests in `string.view.comparison` are not enabled due to previous lack of
support for `constexpr std::string`. Now that it is implemented, we can enable
these tests.

Differential Revision: https://reviews.llvm.org/D126737
2022-06-01 19:26:20 -06:00
Louis Dionne a7f9895cc1 [runtimes] Rename various libcpp-has-no-XYZ Lit features to just no-XYZ
Since those features are general properties of the environment, it makes
sense to use them from libc++abi too, and so the name libcpp-has-no-xxx
doesn't make sense.

Differential Revision: https://reviews.llvm.org/D126482
2022-05-27 15:24:45 -04:00
Nikolas Klauser 425620ccdd [libc++] Implement P0980R1 (constexpr std::string)
Reviewed By: #libc, ldionne

Spies: daltenty, sdasgup3, ldionne, arichardson, MTC, ChuanqiXu, mehdi_amini, shauheen, antiagainst, nicolasvasilache, arpith-jacob, mgester, lucyrfox, aartbik, liufengdb, stephenneuendorffer, Joonsoo, grosul1, Kayjukh, jurahul, msifontes, tatianashp, rdzhabarov, teijeong, cota, dcaballe, Chia-hungDuan, wrengr, wenzhicui, arphaman, Mordante, miscco, Quuxplusone, smeenai, libcxx-commits

Differential Revision: https://reviews.llvm.org/D110598
2022-04-27 12:25:34 +02:00
Nikolas Klauser 29c8c070a1 [libc++] Use bit field for checking if string is in long or short mode
This makes the code a bit simpler and (I think) removes the undefined behaviour from the normal string layout.

Reviewed By: ldionne, Mordante, #libc

Spies: labath, dblaikie, JDevlieghere, krytarowski, jgorbe, jingham, saugustine, arichardson, libcxx-commits

Differential Revision: https://reviews.llvm.org/D123580
2022-04-21 14:20:21 +02:00
Nikolas Klauser 628fcfd520 [libc++] Add tests for std::string default constructor and destructor
Reviewed By: ldionne, var-const, #libc, nilayvaish

Spies: nilayvaish, libcxx-commits

Differential Revision: https://reviews.llvm.org/D123129
2022-04-08 12:21:43 +02:00
Louis Dionne b7042b73a3 [libc++] Add back-deployment testing on arm64 macs
Differential Revision: https://reviews.llvm.org/D123081
2022-04-07 10:15:40 -04:00
Louis Dionne 8ec4999766 [libc++] Tidy up tests for deduction guides and other compile-time failing properties in std::string
Instead of using `.fail.cpp` tests, use `.verify.cpp` to check for the
exact reason of the failure. In the case of deduction guides, use SFINAE
based tests instead since that is our preferred way of testing those.

Finally, ensure that we actually run the test in `iter_alloc_deduction.pass.cpp`,
since we were not running anything before.

Differential Revision: https://reviews.llvm.org/D123055
2022-04-05 10:52:52 -04:00
Nikolas Klauser 85e9b2687a [libc++] Prepare string tests for constexpr
These are the last™ changes to the tests for constexpr preparation.

Reviewed By: Quuxplusone, #libc, Mordante

Spies: Mordante, EricWF, libcxx-commits

Differential Revision: https://reviews.llvm.org/D120951
2022-03-19 18:48:14 +01:00
Joe Loser d2baefae68
[libc++] Replace _LIBCPP_HAS_NO_CONCEPTS with _LIBCPP_STD_VER > 17. NFCI.
All supported compilers that support C++20 now support concepts. So, remove
`_LIB_LIBCPP_HAS_NO_CONCEPTS` in favor of `_LIBCPP_STD_VER > 17`. Similarly in
the tests, remove `// UNSUPPORTED: libcpp-no-concepts`.

Differential Revision: https://reviews.llvm.org/D121528
2022-03-13 12:32:06 -04:00
Louis Dionne 311ff39178 [libc++] Add missing header <cuchar>
Fixes llvm-project#44216

Differential Revision: https://reviews.llvm.org/D97870
2022-03-07 08:48:50 -05:00
Casey Carter 2d653b7e5b [libcxx][test] array and basic_string_view iterators are not portably pointers
Fixup tests that believe them to be so. Most notably including some heavy refactoring in `std/iterators/iterator.primitives/iterator.traits/cxx20_iterator_traits.compile.pass.cpp`, which now detects pointers and validates that `iterator_concept` is present only for pointers.

Differential Revision: https://reviews.llvm.org/D117368
2022-02-21 10:54:08 -08:00
Nikolas Klauser 1cfa485769 [libc++] Implement P1165R1 (Make stateful allocator propagation more consistent)
Reviewed By: Quuxplusone, ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D119112
2022-02-17 22:00:48 +01:00
Arthur O'Dwyer 98bb747c87 [libc++] [test] Qualify calls to std::getline. NFCI.
Reviewed as part of D119860.
2022-02-16 11:03:33 -05:00
Arthur O'Dwyer 7853371146 [libc++] [test] Qualify `move` as `std::move` in a lot of tests. NFCI.
We shouldn't be calling `move` via ADL -- and neither should anybody
in the wild be calling it via ADL, so it's not like we need to test
this ADL ability of `move` in particular.

Reviewed as part of D119860.
2022-02-16 11:03:31 -05:00
Nikolas Klauser f75f171b20 [libc++] Remove cpp17_input_iterator.h
Reviewed By: Quuxplusone, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D119881
2022-02-16 04:17:40 +01:00
Arthur O'Dwyer 53406fb691 [libc++] Guard much of std::ranges under _LIBCPP_HAS_NO_INCOMPLETE_RANGES.
The logic here is that we are disabling *only* things in `std::ranges::`.
Everything in `std::` is permitted, including `default_sentinel`, `contiguous_iterator`,
`common_iterator`, `projected`, `swappable`, and so on. Then, we include
anything from `std::ranges::` that is required in order to make those things
work: `ranges::swap`, `ranges::swap_ranges`, `input_range`, `ranges::begin`,
`ranges::iter_move`, and so on. But then that's all. Everything else (including
notably all of the "views" and the `std::views` namespace itself) is still
locked up behind `_LIBCPP_HAS_NO_INCOMPLETE_RANGES`.

Differential Revision: https://reviews.llvm.org/D118736
2022-02-15 10:38:21 -05:00
Nikolas Klauser 30046a31b8 [libc++] Prepare string.nonmembers for constexpr
Reviewed By: ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D119487
2022-02-14 22:53:41 +01:00
Nikolas Klauser ccc740353d [libc++] Prepare string.ops for constexpr
Reviewed By: ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D119490
2022-02-11 22:31:32 +01:00
Mark de Wever 9027887e23 [libc++][nfc] Add TEST_HAS_NO_CHAR8_T.
This avoids using an libc++ internal macro in our tests. This version
doesn't depend on the internal macro but redefines it.

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D119460
2022-02-11 17:37:05 +01:00
Nikolas Klauser dcffa7d3e1 [libc++] Prepare string.modifiers tests for constexpr
Reviewed By: ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D119329
2022-02-10 21:43:18 +01:00
Nikolas Klauser c515b652a0 [libc++] Prepare string.{contains, ends_with, iterators, require, starts_with} tests for constexpr
Reviewed By: ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D119304
2022-02-10 16:56:05 +01:00
Nikolas Klauser e85018b7dd [libc++] Prepare string.{access, capacity, cons} tests for constexpr
Reviewed By: ldionne, #libc

Spies: libcxx-commits, arphaman

Differential Revision: https://reviews.llvm.org/D119123
2022-02-08 23:39:44 +01:00
Mark de Wever 959678425d [libc++][nfc] Add TEST_HAS_NO_UNICODE_CHARS.
This avoids using an libc++ internal macro in our tests.

Reviewed By: #libc, philnik, ldionne

Differential Revision: https://reviews.llvm.org/D118832
2022-02-03 08:02:25 +01:00
Konstantin Varlamov e65d3760a3 [libc++][ranges] Implement `indirectly_copyable{,_storable}`.
Also refactor tests for `indirectly_movable{,_storable}`.

Differential Revision: https://reviews.llvm.org/D118432
2022-02-02 13:27:44 -08:00
Konstantin Varlamov 298331f14d [libc++][ranges][NFC] Test new requirements for `basic_string_view` and `span` iterators.
Note that most changes to `strings` and `views.span` from the One Ranges
Proposal are no longer applicable:
- free `begin` and `end` functions taking `basic_string_view` and `span`
  were removed by [P1870](http://wg21.link/p1870);
- `span::const_iterator` was removed by [LWG3320](https://cplusplus.github.io/LWG/lwg-defects.html#3320).

Reviewed By: #libc, Quuxplusone, ldionne

Differential Revision: https://reviews.llvm.org/D118687
2022-02-02 12:54:39 -08:00
Casey Carter 997e128e2a [libcxx][test] the domain of == for forward iterators is iterator values from the same range
* Default-initialized `basic_string` iterators are not portably in the domain of `==`.
* Avoid comparing iterators from non-equal string_views which MSVCSTL considers not to be in the domain of equality.
* Don't test invalid range `[in, out + N)`.

Also silence some truncation warnings by testing with a non-narrowing conversion.

Differential Revision: https://reviews.llvm.org/D118049
2022-01-24 13:00:07 -08:00
Nikolas Klauser 4822447522 [libc++] basic_string::resize_and_overwrite: Adopt LWG3645 (Not voted in yet)
Adopt LWG3645, which fixes the value categories of basic_string::resize_and_overwrite
https://timsong-cpp.github.io/lwg-issues/3645

Reviewed By: ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D116815
2022-01-20 18:41:09 +01:00
Casey Carter cb71d77cc8 [libcxx][test] Add missing includes and suppress warnings
... from testing with MSVC's STL. Mostly truncation warnings and variables that are only used in `LIBCPP_ASSERT`.

Differential Revision: https://reviews.llvm.org/D116878
2022-01-13 17:34:04 -08:00
Arthur O'Dwyer 67151d029b [libc++] [ranges] Implement P2415R2 owning_view.
"What is a view?"
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2415r2.html
https://github.com/cplusplus/draft/pull/5010/files

This was a late-breaking (Oct 2021) change to C++20.
The only thing missing from this patch is that we're supposed
to bump the feature-test macro from
    #define __cpp_lib_ranges 202106L
to
    #define __cpp_lib_ranges 202110L
but we can't do that because we don't implement all of 202106 Ranges yet.

Differential Revision: https://reviews.llvm.org/D116894
2022-01-13 12:29:41 -05:00
Nikolas Klauser bec50db2ed [libc++] Implement P1072R10 (std::basic_string::resize_and_overwrite)
Reviewed By: Quuxplusone, #libc, Mordante

Spies: mzeren-vmw, ckennelly, arichardson, ldionne, Mordante, libcxx-commits, Quuxplusone

Differential Revision: https://reviews.llvm.org/D113013
2022-01-07 00:09:16 +01:00
Nico Weber 085f078307 Revert "Revert D109159 "[amdgpu] Enable selection of `s_cselect_b64`.""
This reverts commit 859ebca744.
The change contained many unrelated changes and e.g. restored
unit test failes for the old lld port.
2022-01-05 13:10:25 -05:00
David Salinas 859ebca744 Revert D109159 "[amdgpu] Enable selection of `s_cselect_b64`."
This reverts commit 640beb38e7.

That commit caused performance degradtion in Quicksilver test QS:sGPU and a functional test failure in (rocPRIM rocprim.device_segmented_radix_sort).
Reverting until we have a better solution to s_cselect_b64 codegen cleanup

Change-Id: Ibf8e397df94001f248fba609f072088a46abae08

Reviewed By: kzhuravl

Differential Revision: https://reviews.llvm.org/D115960

Change-Id: Id169459ce4dfffa857d5645a0af50b0063ce1105
2022-01-05 17:57:32 +00:00
Louis Dionne 4a47ac7d51 [libc++] Remove incorrect default constructor in cpp17_input_iterator
AFAICT, Cpp17InputIterators are not required to be default constructible,
since that requirement is added in Cpp17ForwardIterator. Hence, our
archetype for Cpp17InputIterator should not be default constructible.
Removing that constructor has a ripple effect on a couple of tests that
were making incorrect assumptions. Notably:

- Some tests were using cpp17_input_iterator as a sentinel for itself.
  That is not valid, because a cpp17_input_iterator is not semiregular
  anymore after the change (and hence it doesn't satisfy sentinel_for).

- Some tests were using a stride-counted cpp17_input_iterator as the
  sentinel for a range. This doesn't work anymore because of the problem
  above, so these tests were changed not to check stride counts for
  input iterators.

- Some tests were default constructing cpp17_input_iterator when a simple
  alternative was available -- those have been changed to use that alternative.

Differential Revision: https://reviews.llvm.org/D115806
2022-01-04 14:33:51 -05:00
Nikolas Klauser c9dbf0f2a1 [libc++] Fix __wrap_iter copy-assignment in constexpr contexts
Fixes https://github.com/llvm/llvm-project/issues/52902

In debug mode during constant evaluation the iterator was never assigend. There seem to be no other instances of this bug.

Reviewed By: Quuxplusone, Mordante, #libc, ldionne

Spies: ldionne, libcxx-commits

Differential Revision: https://reviews.llvm.org/D116346
2022-01-04 11:05:53 +01:00
Arthur O'Dwyer 2a04decc4a [libc++] [test] Simplify sentinel_wrapper and sized_sentinel.
Remove `s.base()`; every test that wants to get the base of a "test sentinel"
should use the ADL `base(s)` from now on.

Differential Revision: https://reviews.llvm.org/D115766
2021-12-16 12:02:58 -05:00
Nikolas Klauser 148ef80f89 [libc++] Add GCC workaround in std::char_traits<char>::length()
GCC currently does not allow `__builtin_strlen()` during constant evaluation. This PR adds a workaround in `std::char_traits<char>::length()`

Reviewed By: Quuxplusone, ldionne, #libc, Mordante

Spies: Mordante, libcxx-commits

Differential Revision: https://reviews.llvm.org/D115795
2021-12-16 14:27:51 +01:00
Louis Dionne bf39e7dc6c [libc++] Fix wrongly non-inline basic_string::shrink_to_fit
As explained in https://stackoverflow.com/a/70339311/627587, the fact
that shrink_to_fit wasn't defined as inline lead to issues when explicitly
instantiating basic_string. While explicit instantiations are always
somewhat brittle, this one was clearly a bug on our end.

Differential Revision: https://reviews.llvm.org/D115656
2021-12-14 11:12:04 -05:00
Louis Dionne 2db67e9771 [libc++] Fix the return value of max_size()
I assume nobody ever uses std::string_view::max_size() outside of
testing. However, we should still return a value that is based on
something with a reasonable rationale. Previously, we would forget
to take into account the size of the character type stored in the
string, and this patch takes that into account.

Thanks to @mclow.lists for pointing out this issue.

Differential Revision: https://reviews.llvm.org/D114395
2021-12-06 13:53:25 -05:00
Joe Loser c16b13ebf9
[libc++] Implement P1989R2: range constructor for string_view
Implement P1989R2 which adds a range constructor for `string_view`.

Adjust `operator/=` in `path` to avoid atomic constraints caching issue
getting provoked from this PR.

Add defaulted template argument to `string_view`'s "sufficient
overloads" to avoid mangling issues in `clang-cl` builds. It is a
MSVC mangling bug that this works around.

Differential Revision: https://reviews.llvm.org/D113161
2021-12-01 23:16:36 -05:00
Arthur O'Dwyer 0efd9a03fa [libc++] [test] Refactor string_view comparison tests for comprehensiveness.
Differential Revision: https://reviews.llvm.org/D114658
2021-12-01 15:04:33 -05:00