Commit Graph

639 Commits

Author SHA1 Message Date
Marshall Clow 39084db328 Implement LWG 2960: nonesuch is insufficiently useless
llvm-svn: 359526
2019-04-30 00:54:38 +00:00
Marshall Clow fafbddc275 Mark LWG#2977 as 'Nothing to do'. NFC
llvm-svn: 359525
2019-04-30 00:54:26 +00:00
Marshall Clow 8a02f8d928 Add tests specifically for LWG2164. We already did this; but now we have tests. NFC
llvm-svn: 359458
2019-04-29 15:38:07 +00:00
Marshall Clow b0e2daf64b Implement 'lerp'; which is the last bit of P0811. Mark that paper as complete.
llvm-svn: 359211
2019-04-25 17:44:18 +00:00
Eric Fiselier 2fc5a786be Add std::is_constant_evaluated.
Clang recently added __builtin_is_constant_evaluated() and GCC 9.0
has it as well.

This patch adds support for it in libc++.

llvm-svn: 359119
2019-04-24 17:54:25 +00:00
Eric Fiselier 1670772adc Fix implementation of ::abs and std::abs LWG 2192.
Summary:
All overloads of `::abs` and `std::abs` must be present in both `<cmath>` and `<cstdlib>`. This is problematic to implement because C defines `fabs` in `math.h` and `labs` in `stdlib.h`. This introduces a circular dependency between the two headers. 

This patch implements that requirement by moving `abs` into `math.h` and making `stdlib.h` include `math.h`. In order to get the underlying C declarations from the "real" `stdlib.h` inside our `math.h` we need some trickery. Specifically we need to make `stdlib.h` include next itself.

Suggestions for a cleaner implementation are welcome.

Reviewers: mclow.lists, ldionne

Reviewed By: ldionne

Subscribers: krytarowski, fedor.sergeev, dexonsmith, jdoerfert, jsji, libcxx-commits

Differential Revision: https://reviews.llvm.org/D60097

llvm-svn: 359020
2019-04-23 18:01:58 +00:00
Louis Dionne 6c49e1ce26 [libc++] Use std::is_nothrow_callable for std::invoke according to LWG 2807
Thanks to Zoe Carver for the patch.
Differential Revision: https://reviews.llvm.org/D58097

llvm-svn: 357616
2019-04-03 17:54:37 +00:00
Louis Dionne beb6efb42e [libcxx] Make sure reference_wrapper works with incomplete types
Summary: Completes P0357R3, which was merged into the C++20 Working Draft in San Diego.

Reviewers: EricWF, mclow.lists

Subscribers: christof, jkorous, dexonsmith, libcxx-commits

Differential Revision: https://reviews.llvm.org/D54722

llvm-svn: 357423
2019-04-01 19:53:44 +00:00
Louis Dionne 2d0b4d6bb3 [libc++][CMake] Clean up some of the libc++ re-exporting logic
Summary:
This change allows specifying the version of libc++abi's ABI to re-export
when configuring CMake. It also clearly identifies which ABI version of
libc++abi each export file contains.

Finally, it removes hardcoded knowledge about the 10.9 SDK for MacOS,
since that knowledge is not relevant anymore. Indeed, libc++ can't be
built with the toolchain that came with the 10.9 SDK anyway because
the version of Clang it includes is too old (for example if you want
to build a working libc++.dylib, you need bugfixes to visibility
attributes that are only in recent Clangs).

Reviewers: dexonsmith, EricWF

Subscribers: mgorny, christof, jkorous, arphaman, libcxx-commits

Differential Revision: https://reviews.llvm.org/D59489

llvm-svn: 356587
2019-03-20 18:16:24 +00:00
Eric Fiselier 7ffcd984c4 LWG 2843 "Unclear behavior of std::pmr::memory_resource::do_allocate()"
Patch by Arthur O'Dwyer.
Reviewed as https://reviews.llvm.org/D47344

new_delete_resource().allocate(n, a) has basically two permissible results:

* Return an appropriately sized and aligned block.
* Throw bad_alloc.

Before this patch, libc++'s new_delete_resource would do a third and impermissible thing, which was
to return an appropriately sized but inappropriately under-aligned block. This is now fixed.

(This came up while I was stress-testing unsynchronized_pool_resource on my MacBook. If we can't
trust the default resource to return appropriately aligned blocks, pretty much everything breaks.
For similar reasons, I would strongly support just patching __libcpp_allocate directly, but I don't
care to die on that hill, so I made this patch as a <memory_resource>-specific workaround.)

llvm-svn: 355763
2019-03-09 00:38:19 +00:00
Davide Italiano 6de760ac4e Reinstate libc++ patches now that the lldb formatter has been updated.
"[libc++] Fix <atomic> failures on GCC"
"[libc++] Change memory_order to an enum class"
"[libc++] decoupling Freestanding atomic<T> from libatomic.a"

llvm-svn: 355427
2019-03-05 18:40:49 +00:00
Davide Italiano 1061cb6a93 [libcxx] Revert set of atomic patches that broke lldb.
Revert "[libc++] Fix <atomic> failures on GCC"
Revert "[libc++] Change memory_order to an enum class"
Revert "[libc++] decoupling Freestanding atomic<T> from libatomic.a"

The lldb formatter nededs to be updated. Shafik and Louis will
coordinate to do so.

llvm-svn: 355417
2019-03-05 17:38:33 +00:00
Louis Dionne b55803283b [libc++] Change memory_order to an enum class
This implements P0439R0.

Thanks to Zoe Carver for the patch.
Differential Revision: https://reviews.llvm.org/D58201

llvm-svn: 355403
2019-03-05 14:50:25 +00:00
Louis Dionne ab19068b7f [libc++] Add is_nothrow_convertible from P0758R1
Reviewed as https://reviews.llvm.org/D58019.
Thanks to Zoe Carver for the patch.

llvm-svn: 355010
2019-02-27 17:57:38 +00:00
Marshall Clow 02e1651c1f Implment the last part of P1024: tuple-like interface to span. Reviewed as https://reviews.llvm.org/D58706.
llvm-svn: 354988
2019-02-27 15:41:37 +00:00
Marshall Clow c0170de222 Remove P1272R1, it was not moved in Kona
llvm-svn: 354904
2019-02-26 18:17:30 +00:00
Marshall Clow a04143ee27 Put a 'first implemented' version into the entry for P1357
llvm-svn: 354901
2019-02-26 17:22:47 +00:00
Marshall Clow 7b4ab3b9e4 Mark several issues (and one paper) as complete. Reviewed as D58099; but I added LWG3101 and LWG3144 and P1357R1 as well.
llvm-svn: 354898
2019-02-26 17:01:00 +00:00
Marshall Clow 8a7f4c9891 Update status page with papers/issues adopted in Kona
llvm-svn: 354796
2019-02-25 16:12:00 +00:00
James Y Knight 5d71fc5d7b Adjust documentation for git migration.
This fixes most references to the paths:
 llvm.org/svn/
 llvm.org/git/
 llvm.org/viewvc/
 github.com/llvm-mirror/
 github.com/llvm-project/
 reviews.llvm.org/diffusion/

to instead point to https://github.com/llvm/llvm-project.

This is *not* a trivial substitution, because additionally, all the
checkout instructions had to be migrated to instruct users on how to
use the monorepo layout, setting LLVM_ENABLE_PROJECTS instead of
checking out various projects into various subdirectories.

I've attempted to not change any scripts here, only documentation. The
scripts will have to be addressed separately.

Additionally, I've deleted one document which appeared to be outdated
and unneeded:
  lldb/docs/building-with-debug-llvm.txt

Differential Revision: https://reviews.llvm.org/D57330

llvm-svn: 352514
2019-01-29 16:37:27 +00:00
Eric Fiselier d258c80414 update upcoming meeting issue status
llvm-svn: 352339
2019-01-28 02:59:01 +00:00
Marshall Clow 03ed93fd37 Note that we have a patch for LWG3101
llvm-svn: 351832
2019-01-22 16:22:53 +00:00
Marshall Clow 9846f5f792 Updated issue 3144
llvm-svn: 351773
2019-01-22 01:05:58 +00:00
Marshall Clow c09219363c Update with issues to be moved in San Diego
llvm-svn: 351770
2019-01-22 00:31:09 +00:00
Louis Dionne 1d5f6a81f5 [libcxx] Reorganize tests since the application of P0602R4
Summary:
P0602R4 makes the special member functions of optional and variant
conditionally trivial based on the types in the optional/variant.
We already implemented that, but the tests were organized as if this
were a non-standard extension. This patch reorganizes the tests in a
way that makes more sense since this is not an extension anymore.

Reviewers: EricWF, mpark, mclow.lists

Subscribers: christof, jkorous, dexonsmith, libcxx-commits

Differential Revision: https://reviews.llvm.org/D54772

llvm-svn: 350884
2019-01-10 20:06:11 +00:00
Eric Fiselier ba62831f7c Implement LWG 3096: path::lexically_relative is confused by trailing slashes
path("/dir/").lexically_relative("/dir"); now returns "." instead of ""

llvm-svn: 349885
2018-12-21 04:25:40 +00:00
Eric Fiselier 49b183a9ec Implement LWG 3065: Make path operators friends.
This prevents things like:

using namespace std::filesystem;
auto x = L"a/b" == std::string("a/b");

llvm-svn: 349884
2018-12-21 04:09:01 +00:00
Eric Fiselier 866885e12a Implement LWG 3145: file_clock breaks ABI for C++17 implementations.
This patch adds std::chrono::file_clock, but without breaking the
existing ABI for std::filesystem.

llvm-svn: 349883
2018-12-21 03:54:57 +00:00
Eric Fiselier 1425485773 Implement LWG 2936: Path comparison is defined in terms of the generic format
This patch implements path::compare according to the current spec. The
only observable change is the ordering of "/foo" and "foo", which orders
the two paths based on having or not having a root directory (instead
of lexically comparing "/" to "foo").

llvm-svn: 349881
2018-12-21 03:16:30 +00:00
Eric Fiselier 5763cbb426 Mark two filesystem LWG issues as complete - nothing to do
llvm-svn: 349877
2018-12-21 02:17:00 +00:00
Marshall Clow f60c63c090 Implement P1209 - Adopt Consistent Container Erasure from Library Fundamentals 2 for C++20. Reviewed as https://reviews.llvm.org/D55532
llvm-svn: 349178
2018-12-14 18:49:35 +00:00
Louis Dionne bb9ca6d0bf [libcxx] Implement P0318: unwrap_ref_decay and unwrap_reference
Summary:
This was voted into C++20 in San Diego. Note that there was a revision
D0318R2 which did include unwrap_reference_t, but we mistakingly voted
P0318R1 into the C++20 Working Draft (which does not include
unwrap_reference_t). This patch implements D0318R2, which is what
we'll end up with in the Working Draft once this mistake has been
fixed.

Reviewers: EricWF, mclow.lists

Subscribers: christof, dexonsmith, libcxx-commits

Differential Revision: https://reviews.llvm.org/D54485

llvm-svn: 348138
2018-12-03 14:03:27 +00:00
Marshall Clow 4d64d7dd64 Implement P0966 - string::reserve should not shrink
llvm-svn: 347789
2018-11-28 18:18:34 +00:00
Marshall Clow 44d247d280 Implement P1085R2 - Should Span be Regular?. This consists entirely of deletions
llvm-svn: 347672
2018-11-27 16:35:41 +00:00
Zhihao Yuan 147b25b4a1 [libc++] Implement P0487R1 - Fixing operator>>(basic_istream&, CharT*)
Summary:
Avoid buffer overflow by replacing the pointer interface with an array reference interface in C++2a.
Tentatively ready on Batavia2018.

 https://wg21.link/lwg2499
 https://wg21.link/p0487

Reviewers: mclow.lists, ldionne, EricWF

Reviewed By: ldionne

Subscribers: libcxx-commits, cfe-commits, christof

Differential Revision: https://reviews.llvm.org/D51268

llvm-svn: 347377
2018-11-21 03:30:10 +00:00
Marshall Clow 422c4295c3 Note that P0899R1 requires no work.
llvm-svn: 347344
2018-11-20 20:38:15 +00:00
Marshall Clow 859bf40761 Mark P0771 as complete; we already did this - I just added tests to be sure
llvm-svn: 347343
2018-11-20 20:37:07 +00:00
Marshall Clow f54aeed6f4 Mark #2184 as complete; the tests are fine. (I thought that they were wrong before)
llvm-svn: 346805
2018-11-13 22:26:03 +00:00
Louis Dionne c2078fb1c8 [NFC] Mark LWG3128 and LWG3132 as requiring no work
Those LWG issues were adopted in San Diego and require no work
on our side.

llvm-svn: 346799
2018-11-13 21:13:10 +00:00
Marshall Clow 78d8b5e1cf Remove duplicate entry for issue 3134
llvm-svn: 346772
2018-11-13 18:07:51 +00:00
Marshall Clow 04fc84408b Update status for issue 3122
llvm-svn: 346771
2018-11-13 18:05:10 +00:00
Louis Dionne 77c17e26ea [NFC][libcxx] Mark P1006R1 as complete
llvm-svn: 346767
2018-11-13 17:33:11 +00:00
Marshall Clow cf355fc373 Implement P0972R0: <chrono> zero(), min(), and max() should be noexcept. Reviewed as https://reviews.llvm.org/D53828
llvm-svn: 346766
2018-11-13 17:22:41 +00:00
Louis Dionne 7a83c5f623 [NFC][libcxx] Mark P1006 as implemented in LLVM 8.0
It was implemented in https://reviews.llvm.org/D53867

llvm-svn: 346765
2018-11-13 17:09:25 +00:00
Marshall Clow a87fe7a345 Update to-do list with new work from WG21 meeting in San Diego
llvm-svn: 346634
2018-11-12 04:58:00 +00:00
Louis Dionne 7c7cac05ed [NFC] Replace C++1y and C++1z by C++14 and C++17, respectively
llvm-svn: 345762
2018-10-31 18:53:31 +00:00
Louis Dionne 534900b12e [NFC] Mark "Splicing Maps and Sets" as done in LLVM 8.0
llvm-svn: 345759
2018-10-31 18:33:11 +00:00
Louis Dionne 7bf7edec79 [libcxx] Correct link to code review for P1006
llvm-svn: 345658
2018-10-30 21:50:11 +00:00
Marshall Clow 537aae35dd Add link to implementation for P1006R0
llvm-svn: 345653
2018-10-30 21:27:42 +00:00
Marshall Clow 8179e5042f Added Phab link for P0927
llvm-svn: 345526
2018-10-29 19:31:35 +00:00