Commit Graph

5908 Commits

Author SHA1 Message Date
--global a062856bcf [NFC] Comment endif to test commit access 2019-10-28 09:19:08 -07:00
marshall 82b82e39c4 Add all the issues to be voted upon in Belfast 2019-10-26 07:53:15 -07:00
Louis Dionne fd667b860e [libcxx] [test] Run `chmod +x` on executables when testing via SSH
When running libc++ tests on a remote machine via SSH, we can encounter
a 'Permission denied' error.

Fix this with plain old 'chmod +x <executable>'.

Thanks to Sergej Jaskiewicz for the patch.

Differential Revision: https://reviews.llvm.org/D69170
2019-10-25 09:47:46 -07:00
Stephan T. Lavavej 2e4f1e112d [www] Change URLs to HTTPS.
This changes most URLs in llvm's html files to HTTPS. Most changes were
search-and-replace with manual verification; some changes were manual.
For a few URLs, the websites were performing redirects or had changed
their anchors; I fixed those up manually. This consistently uses the
official https://wg21.link redirector. This also strips trailing
whitespace and fixes a couple of typos.

Fixes D69363.

There are a very small number of dead links for which I don't know any
replacements (they are equally dead as HTTP or HTTPS):

https://llvm.org/cmds/llvm2cpp.html
https://llvm.org/devmtg/2010-11/videos/Grosser_Polly-desktop.mp4
https://llvm.org/devmtg/2010-11/videos/Grosser_Polly-mobile.mp4
https://llvm.org/devmtg/2011-11/videos/Grosser_PollyOptimizations-desktop.mov
https://llvm.org/devmtg/2011-11/videos/Grosser_PollyOptimizations-mobile.mp4
https://llvm.org/perf/db_default/v4/nts/22463
https://polly.llvm.org/documentation/memaccess.html
2019-10-24 13:25:15 -07:00
Stephan T. Lavavej 7c9844b66e [libcxx][NFC] Strip trailing whitespace, fix typo. 2019-10-23 11:49:43 -07:00
Louis Dionne 6b77ebdc91 [NFC] Strip trailing whitespace from libc++ 2019-10-23 11:19:19 -07:00
Casey Carter 689ce81059
[libc++][NFC] Remove excess trailing newlines from most files
Testing git commit access.
2019-10-23 08:08:57 -07:00
Stephan T. Lavavej 437e0e5191 [libcxx][test][NFC] Fix comment typos.
(Testing git commit access.)
2019-10-22 15:22:13 -07:00
Louis Dionne 19e95ab421 [NFC] Strip trailing whitespace in test to test Github committing 2019-10-22 15:03:01 -07:00
Zoe Carver 40c47680eb [libcxx] Remove shared_ptr::make_shared
Summary: This patch removes `shared_ptr::make_shared` as it is not part of the standard. This patch also adds __create_with_cntrl_block, which is a help function that can be used in std::allocate_shared and std::make_shared. This is the third patch (out of 4) from D66178.

    Reviewers: EricWF, mclow.lists, ldionne

    Subscribers: christof, dexonsmith, libcxx-commits

    Tags: #libc

    Differential Revision: https://reviews.llvm.org/D68805

llvm-svn: 375504
2019-10-22 15:16:49 +00:00
Louis Dionne 3292facc0a [NFC] Fix typos in CMake comment
llvm-svn: 375469
2019-10-21 23:38:32 +00:00
Dimitry Andric d5367db95c Refine check for `_LIBCPP_C_HAS_NO_GETS` on FreeBSD
Summary:
In D67316 we added `_LIBCPP_C_HAS_NO_GETS` to signal that the C library
does not provide `gets()`, and added a test for FreeBSD 13 or higher,
using the compiler-defined `__FreeBSD__` macro.

Unfortunately this did not work that well for FreeBSD's own CI process,
since the gcc compilers used for some architectures define `__FreeBSD__`
to match the build host, not the target.

Instead, we should use the `__FreeBSD_version` macro from the userland
header `<osreldate.h>`, which is more fine-grained.  See also
<https://reviews.freebsd.org/D22034>.

Reviewers: EricWF, mclow.lists, emaste, ldionne

Reviewed By: emaste, ldionne

Subscribers: dexonsmith, bsdjhb, krytarowski, christof, ldionne, libcxx-commits

Differential Revision: https://reviews.llvm.org/D69174

llvm-svn: 375340
2019-10-19 10:59:23 +00:00
Richard Smith a9727033fb P1152R4: Fix deprecation warnings in libc++ testsuite and in uses of is_invocable that would internally conjure up a deprecated function type.
Summary: The implementation of P1152R4 in Clang has resulted in some deprecation warnings appearing in the libc++ and libc++abi test suite. Fix or suppress these warnings.

Reviewers: mclow.lists, EricWF

Subscribers: christof, ldionne, libcxx-commits

Tags: #libc

Differential Revision: https://reviews.llvm.org/D68879

llvm-svn: 375307
2019-10-19 00:06:00 +00:00
Casey Carter 6f0768f64d [libc++][test] Use <version> to get config on MSVC
...instead of `<ciso646>`.

Also includes some NFC comment changes.

llvm-svn: 374854
2019-10-15 00:22:38 +00:00
Casey Carter fcad66f165 [libc++][test] Portability fix for std::any tests
Ensure that `large_tracked_t` defined in `any_helpers.h` is in fact too large to fit in `std::any`'s small object buffer.

llvm-svn: 374806
2019-10-14 19:05:04 +00:00
Casey Carter c86ba58188 [libc++][test] Add license headers to test/support/archetypes.*
Differential Revision: https://reviews.llvm.org/D68947

llvm-svn: 374797
2019-10-14 18:00:34 +00:00
Casey Carter a4f07b4d2e [libc++][test] Silence more warnings in variant tests
More cases of signed-to-unsigned conversion warnings that missed the train for d2623522.

llvm-svn: 374778
2019-10-14 14:38:12 +00:00
Casey Carter 80e088e141 [libc++][test] std::variant test cleanup
* Add the conventional `return 0` to `main` in `variant.assign/conv.pass.cpp` and `variant.ctor/conv.pass.cpp`

* Fix some MSVC signed-to-unsigned conversion warnings by replacing `int` literarls with `unsigned int` literals

llvm-svn: 374723
2019-10-13 16:46:16 +00:00
Casey Carter 1f92d8b544 [libc++][test] <=> now has a feature-test macro
...which `test/support/test_macros.h` can use to detect compiler support.

llvm-svn: 374722
2019-10-13 16:46:12 +00:00
Casey Carter e198823b87 [libc++][test] Silence MSVC warning in std::optional test
`make_optional<string>(4, 'X')` passes `4` (an `int`) as the first argument to `string`'s `(size_t, charT)` constructor, triggering a signed/unsigned mismatch warning when compiling with MSVC at `/W4`. The incredibly simple fix is to instead use an unsigned literal (`4u`).

llvm-svn: 374684
2019-10-12 19:01:46 +00:00
Petr Hosek 34a3b24a90 [libc++] Fix linker script generation
Handle the case when libc++abi and libunwind are being built together
with libc++ in the runtimes build. This logic was used in the previous
implementation but dropped in r374116.

Differential Revision: https://reviews.llvm.org/D68791

llvm-svn: 374510
2019-10-11 04:54:35 +00:00
Casey Carter ffc83995de [libc++][test] Change IsSmallObject's calculation for std::any's small object buffer
`sizeof(std::any) - sizeof(void*)` is correct for both libc++ and the MSVC standard library.

Differential Revision: https://reviews.llvm.org/D68756

llvm-svn: 374407
2019-10-10 18:07:12 +00:00
Casey Carter b2e3c83b0d [libc++][test] Miscellaneous MSVC cleanups
* Silence unused-local-typedef warnings: `map.cons/assign_initializer_list.pass.cpp` (and the `set.cons` variant) uses a local typedef only within `LIBCPP_ASSERT`s, so clang diagnoses it as unused when testing non-libc++.
* Add missing include: `c.math/abs.pass.cpp` uses `std::numeric_limits` but failed to `#include <limits>`.
* Don't test non-type: A "recent" change to `meta.trans.other/underlying_type.pass.cpp` unconditionally tests the type `F` which is conditionally defined.
* Use `hash<long long>` instead of `hash<short>` with `int` in `unordered_meow` deduction guide tests to avoid truncation warnings.
* Convert `3.14` explicitly in `midpoint.float.pass` since MSVC incorrectly diagnoses `float meow = 3.14;` as truncating.

Differential Revision: https://reviews.llvm.org/D68681

llvm-svn: 374248
2019-10-09 22:19:17 +00:00
Eric Fiselier 78153b3a97 Optimize operator=(const basic_string&) for tail call.
Patch by Martijn Vels (mvels@google.com)
Reviewed as https://reviews.llvm.org/D68276

This is a non trivial win for externally templated assignment operator.

x86 without tail call (current libc++)

0000000000000000 <std::string::operator=(std::string const&)>:
   0:   55                      push   %rbp
   1:   48 89 e5                mov    %rsp,%rbp
   4:   53                      push   %rbx
   5:   50                      push   %rax
   6:   48 89 fb                mov    %rdi,%rbx
   9:   48 39 f7                cmp    %rsi,%rdi
   c:   74 17                   je     25 <std::string::operator=(std::string const&)+0x25>
   e:   0f b6 56 17             movzbl 0x17(%rsi),%edx
  12:   84 d2                   test   %dl,%dl
  14:   79 07                   jns    1d <std::string::operator=(std::string const&)+0x1d>
  16:   48 8b 56 08             mov    0x8(%rsi),%rdx
  1a:   48 8b 36                mov    (%rsi),%rsi
  1d:   48 89 df                mov    %rbx,%rdi
  20:   e8 00 00 00 00          callq  25 <std::string::operator=(std::string const&)+0x25>
  25:   48 89 d8                mov    %rbx,%rax
  28:   48 83 c4 08             add    $0x8,%rsp
  2c:   5b                      pop    %rbx
  2d:   5d                      pop    %rbp
  2e:   c3                      retq

After:

0000000000000000 <std::string::operator=(std::string const&)>:
   0:   48 39 f7                cmp    %rsi,%rdi
   3:   74 14                   je     19 <std::string::operator=(std::string const&)+0x19>
   5:   0f b6 56 17             movzbl 0x17(%rsi),%edx
   9:   84 d2                   test   %dl,%dl
   b:   79 07                   jns    14 <std::string::operator=(std::string const&)+0x14>
   d:   48 8b 56 08             mov    0x8(%rsi),%rdx
  11:   48 8b 36                mov    (%rsi),%rsi
  14:   e9 00 00 00 00          jmpq   19 <std::string::operator=(std::string const&)+0x19>
  19:   48 89 f8                mov    %rdi,%rax
  1c:   c3                      retq

Benchmark (pending per https://reviews.llvm.org/D67667)

```
BM_StringAssignStr_Empty_Opaque                     6.23ns ± 0%             5.19ns ± 0%  -16.70%          (p=0.016 n=5+4)
BM_StringAssignStr_Empty_Transparent                5.86ns ± 0%             5.14ns ± 0%  -12.24%          (p=0.008 n=5+5)
BM_StringAssignStr_Small_Opaque                     8.79ns ± 1%             7.69ns ± 0%  -12.53%          (p=0.008 n=5+5)
BM_StringAssignStr_Small_Transparent                9.44ns ± 0%             8.00ns ± 0%  -15.26%          (p=0.008 n=5+5)
BM_StringAssignStr_Large_Opaque                     25.2ns ± 0%             24.3ns ± 0%   -3.50%          (p=0.008 n=5+5)
BM_StringAssignStr_Large_Transparent                23.6ns ± 0%             22.5ns ± 0%   -4.76%          (p=0.008 n=5+5)
BM_StringAssignStr_Huge_Opaque                       319ns ± 5%              317ns ± 5%     ~             (p=0.690 n=5+5)
BM_StringAssignStr_Huge_Transparent                  319ns ± 5%              317ns ± 5%     ~             (p=0.421 n=5+5)
BM_StringAssignAsciiz_Empty_Opaque                  7.41ns ± 0%             7.77ns ± 0%   +4.89%          (p=0.008 n=5+5)
BM_StringAssignAsciiz_Empty_Transparent             7.54ns ± 3%             7.30ns ± 0%   -3.24%          (p=0.008 n=5+5)
BM_StringAssignAsciiz_Small_Opaque                  9.87ns ± 0%            10.24ns ± 1%   +3.76%          (p=0.008 n=5+5)
BM_StringAssignAsciiz_Small_Transparent             10.4ns ± 1%              9.8ns ± 2%   -5.78%          (p=0.008 n=5+5)
BM_StringAssignAsciiz_Large_Opaque                  30.1ns ± 0%             30.1ns ± 0%     ~             (p=0.167 n=5+5)
BM_StringAssignAsciiz_Large_Transparent             27.1ns ± 0%             27.4ns ± 0%   +0.92%          (p=0.016 n=4+5)
BM_StringAssignAsciiz_Huge_Opaque                    383ns ± 4%              382ns ± 4%     ~             (p=0.548 n=5+5)
BM_StringAssignAsciiz_Huge_Transparent               375ns ± 0%              380ns ± 0%   +1.37%          (p=0.029 n=4+4)
BM_StringAssignAsciizMix_Opaque                     14.0ns ± 0%             14.0ns ± 0%     ~             (p=0.881 n=5+5)
BM_StringAssignAsciizMix_Transparent                13.7ns ± 1%             13.8ns ± 0%     ~             (p=0.056 n=5+5)
```

llvm-svn: 374137
2019-10-09 03:07:02 +00:00
Louis Dionne fe53d2dc6b [libc++] Workaround old versions of CMake that don't understand list(JOIN)
llvm-svn: 374120
2019-10-08 21:33:35 +00:00
Louis Dionne 1ea8bb39b9 [libc++] Move the linker script generation step to CMake
Summary:
This allows the linker script generation to query CMake properties
(specifically the dependencies of libc++.so) instead of having to
carry these dependencies around manually in global variables. Notice
the removal of the LIBCXX_INTERFACE_LIBRARIES global variable.

Reviewers: phosek, EricWF

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

Tags: #libc

Differential Revision: https://reviews.llvm.org/D68343

llvm-svn: 374116
2019-10-08 21:10:20 +00:00
Louis Dionne 32300877f9 [libc++] Make sure we link all system libraries into the benchmarks
It turns out that r374056 broke _some_ build bots again, specifically
the ones using sanitizers. Instead of trying to link the right system
libraries to the benchmarks bit-by-bit, let's just link exactly the
system libraries that libc++ itself needs.

llvm-svn: 374079
2019-10-08 16:26:24 +00:00
Louis Dionne c864f73e45 [libc++] TAKE 2: Make system libraries PRIVATE dependencies of libc++
We tried doing that previously (in r373487) and failed (reverted in
r373506) because the benchmarks needed to link against system libraries
and relied on libc++'s dependencies being propagated. Now that this has
been fixed (in r374053), this commit marks the system libraries as
PRIVATE dependencies of libc++.

llvm-svn: 374056
2019-10-08 14:53:11 +00:00
Louis Dionne cf3ab6d96c [libc++] Add missing link-time dependencies to the benchmarks
Since the benchmarks build with -nostdlib, they need to manually link
against some system libraries that are used by the benchmarks and the
GoogleBenchmark library itself.

Previously, we'd rely on the fact that these libraries were linked
through the PUBLIC dependencies of cxx_shared/cxx_static. However,
if we were to make these dependencies PRIVATE (as they should be
because they are implementation details of libc++), the benchmarks
would fail to link. This commit remediates that.

llvm-svn: 374053
2019-10-08 14:28:56 +00:00
Louis Dionne 534c86d172 [libc++] Use PRIVATE to link benchmark dependencies
It's better style to use PRIVATE when linking libraries to executables,
and it doesn't make a difference since executables don't need to propagate
their link-time dependencies anyway.

llvm-svn: 374050
2019-10-08 14:10:55 +00:00
Zoe Carver a9d43b55c7 [libc++] Remove C++03 variadics in shared_ptr (v2)
Summary: In my last patch (D67675) I forgot a few variadics. This patch removes the remaining make_shared and allocate_shared C++03 variadics.

    Reviewers: ldionne, EricWF, mclow.lists

    Subscribers: christof, dexonsmith, libcxx-commits

    Tags: #libc

    Differential Revision: https://reviews.llvm.org/D68000

llvm-svn: 373971
2019-10-07 21:41:15 +00:00
Alex Langford 9627b26c40 [libc++] Guard cxx_experimental settings behind LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY
If you explicitly set LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY to OFF, your
project will fail to configure because the cxx_experimental target
doesn't exist.

llvm-svn: 373809
2019-10-04 23:08:20 +00:00
Louis Dionne fadc84ae9a [libc++] Localize common build flags into a single CMake function
Also, set those flags for the cxx_experimental target. Otherwise,
cxx_experimental doesn't build properly when neither the static nor
the shared library is compiled (yes, that is a weird setup).

llvm-svn: 373808
2019-10-04 22:50:23 +00:00
Sterling Augustine b3e3934347 Add an off-by-default option to enable testing for gdb pretty printers.
Summary:
The current version of the pretty printers are not python3 compatible,
so turn them off by default until sufficiently improved.

Reviewers: MaskRay, tamur

Subscribers: mgorny, christof, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68477

llvm-svn: 373796
2019-10-04 22:15:28 +00:00
Louis Dionne 13c4254714 [libc++] Make the modules-related flags PUBLIC instead of PRIVATE
It appears that those need to be propagated to targets that use libc++
as well, otherwise they don't build properly.

llvm-svn: 373773
2019-10-04 19:10:56 +00:00
Louis Dionne 432ae75f8b [libc++] Move more CMake flags to per-target definitions
This daily refactoring tackles flags related to modules,
exceptions and RTTI.

llvm-svn: 373767
2019-10-04 18:03:17 +00:00
Fangrui Song 4a71328f15 Make libc++ gdb pretty printer Python 3 compatible
llvm-svn: 373691
2019-10-04 04:47:33 +00:00
Eric Fiselier 5e7e6f16d9 Attempt to remove linker workaround on the buildbots: Attempt 2
The first commit removed the workaround in a old script.
This patch removes it in the file actually used by the bots.

I have no idea if this is still needed, but removing the
workaround seems like the easiest way to test.

I'll revert this change if the bots go red.

llvm-svn: 373653
2019-10-03 19:38:44 +00:00
Eric Fiselier bed690e370 Attempt to remove linker workaround on the buildbots.
I have no idea if this is still needed, but removing the
workaround seems like the easiest way to test.

I'll revert this change if the bots go red.

llvm-svn: 373650
2019-10-03 19:13:35 +00:00
Louis Dionne c5b74bf6e5 [libc++] Add a per-target flag to include the generated config_site
This allows propagating the include automatically to targets that
depend on one of the libc++ targets such as the benchmarks. Note
that the GoogleBenchmark build itself still needs to manually specify
the -include, since I don't know of any way to have an external project
link against one of the libc++ targets (which would propagate the -include
automatically).

llvm-svn: 373631
2019-10-03 17:20:50 +00:00
Louis Dionne 0961a152d8 [libc++] Add missing revision number in ABI changelog
llvm-svn: 373625
2019-10-03 16:50:05 +00:00
Fangrui Song c4b5e594b4 Fix libc++ pretty printer test for Python 3 after D67238 (take 2)
In both Python 2 and Python 3, gdb.Value.string returns a 'str'. We just
need to delete a `encode("utf-8")` which would return a 'bytes' in
Python 3.

llvm-svn: 373570
2019-10-03 06:19:50 +00:00
Louis Dionne 925d9d2e14 [libc++] Use functions instead of global variables to set libc++ build flags
This commit follows the trend of doing things per-target instead of
modifying the C++ flags globally. It does so for visibility-related
flags, other basic build flags and Windows-specific flags.

llvm-svn: 373517
2019-10-02 20:07:01 +00:00
Louis Dionne c78c0e08be [libc++] Use a function to set warning flags per target
This is part of a larger shift to move to per-target settings and
eradicate global variables from the CMake build. I'm starting small
with warnings only because those are easy to transition over and I
want to see how it pans out, but we can handle all flags like exceptions
and RTTI in the future.

llvm-svn: 373511
2019-10-02 19:31:30 +00:00
Louis Dionne 9cc90ec349 [libc++] Revert to using PUBLIC instead of PRIVATE when linking system libs
It turns out the benchmarks need to link against those libraries
explicitly too, so CMake's propagation of PUBLIC dependencies is
used.

llvm-svn: 373506
2019-10-02 19:11:08 +00:00
Louis Dionne ef315b5361 [libc++] Use PRIVATE instead of PUBLIC when linking against system libs
llvm-svn: 373487
2019-10-02 16:51:42 +00:00
Fangrui Song 619bcebc05 Fix libc++ pretty printer test for Python 3 after D67238
llvm-svn: 373452
2019-10-02 11:49:47 +00:00
Sterling Augustine 9b36c1cf27 Determine endianness at a time when it doesn't inadvertantly clear gdb's wrap_buffer via gdb.execute.
Summary:
I haven't managed a small reproduction for this bug, it involves
complicated and deeply nested data structures with a wide variety
of pretty printers. But in general, we shouldn't be combining
gdb's command line interface (via gdb.execute) with pretty-printers.

Subscribers: christof, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68306

llvm-svn: 373402
2019-10-01 22:42:37 +00:00
Louis Dionne 85ee0c2ec3 [NFC] Fix typos in libc++ documentation
llvm-svn: 373390
2019-10-01 20:34:50 +00:00
Louis Dionne bcab95182b [libc++] Re-apply workaround for D63883
In reality, this workaround is for the fact that LIBCXX_CXX_ABI=libcxxabi
can't be specified on Linux, since libc++abi isn't shipped with the system.
Since the build bots explicitly specify LIBCXX_CXX_ABI=libcxxabi, they fail
unless we apply the workaround.

llvm-svn: 373385
2019-10-01 19:27:38 +00:00