This reverts r366593, which caused unforeseen breakage on the build bots.
I'm reverting until the problems have been figured out and fixed.
llvm-svn: 366603
Summary:
This commit allows specifying LIBCXX_ENABLE_PARALLEL_ALGORITHMS when
configuring libc++ in CMake. When that option is enabled, libc++ will
assume that the PSTL can be found somewhere on the CMake module path,
and it will provide the C++17 parallel algorithms based on the PSTL
(that is assumed to be available).
The commit also adds support for running the PSTL tests as part of
the libc++ test suite.
Reviewers: rodgert, EricWF
Subscribers: mgorny, christof, jkorous, dexonsmith, libcxx-commits, mclow.lists, EricWF
Tags: #libc
Differential Revision: https://reviews.llvm.org/D60480
llvm-svn: 366593
Also, use a single point of customization to set what namespace __par_backend
"points to", which provides a better separation of concerns.
llvm-svn: 365337
This is a stopgap measure to make it easier to integrate the PSTL into
libc++. In the future, we should have a system similar to what libc++
does, where we specify settings at configuration time and generate a
__config_site header that is part of the PSTL.
llvm-svn: 363958
Mostly unused parameter, unused local typedefs and shadowed declarations.
This massaging it necessary if we want to be able to run the tests under
the libc++ lit configuration.
llvm-svn: 363872
Summary:
A modification of the parallel sorting algorithm, additionally optimized for a partially sorted array.
Reviewers: rodgert
ldionne
Differential Revision: https://reviews.llvm.org/D59925
llvm-svn: 362678
- unused parameter warnings
- don't use single-letter template parameter names, like we do in libc++
- sign-comparison warnings
- unused variables in the tests
- unused local typedefs in the tests
- the use of #include_next
- field reordering in the tests
- unused lambda captures
Note that the rationale for why the static_casts to unsigned are OK is
that last - first must always be non-negative, since [first, last) is
a valid range.
llvm-svn: 362148
Summary:
Before this change, the default backend was TBB but one could disable
anything related to TBB by removing the parallel policies. This change
uses the serial backend by default and removes the ability to disable
parallel policies, which is not useful anymore.
Reviewers: rodgert, MikeDvorskiy
Subscribers: mgorny, jkorous, dexonsmith, jdoerfert, libcxx-commits
Differential Revision: https://reviews.llvm.org/D59792
llvm-svn: 359134
Summary:
The serial backend performs all tasks serially and does not require
threads. It does not have any dependencies beyond normal C++, but
it is not very efficient either.
Reviewers: rodgert, MikeDvorskiy
Subscribers: mgorny, jkorous, dexonsmith, jdoerfert, libcxx-commits
Differential Revision: https://reviews.llvm.org/D59791
llvm-svn: 358700
Summary:
PSTL should not provide those headers since they belong to the standard
library. Instead, we define a dummy standard library in the tests that
provides those headers.
Reviewers: rodgert, MikeDvorskiy
Subscribers: mgorny, jkorous, dexonsmith, libcxx-commits
Tags: #libc
Differential Revision: https://reviews.llvm.org/D60535
llvm-svn: 358497
Summary:
The TBBConfig file installed by TBB 2019 Update 5 works properly, so we
don't need this workaround anymore.
Reviewers: rodgert, MikeDvorskiy
Subscribers: mgorny, jkorous, dexonsmith, libcxx-commits
Tags: #libc
Differential Revision: https://reviews.llvm.org/D60467
llvm-svn: 358196
When an execution policy is provided, we attempt to run std::equal in
parallel instead of always doing it serially.
Thanks to Mikhail Dvorskiy for the patch.
Differential Revision: https://reviews.llvm.org/D59813
llvm-svn: 357613
Summary:
Indenting preprocessor directives provides a significant gain in
readability. We do it for normal if statements, and it makes sense
to do it for preprocessor ifs too.
Reviewers: rodgert, MikeDvorskiy
Subscribers: jkorous, dexonsmith, jdoerfert, libcxx-commits
Differential Revision: https://reviews.llvm.org/D59767
llvm-svn: 357401
This guards against unintended ADL issues.
Thanks to Thomas Rogers for the patch.
Differential Revision: https://reviews.llvm.org/D60009
llvm-svn: 357306
Necessary when pstl is included from with <algorithm> and <numeric> to
prevent a partially declared standard library when pstl itself uses
algorithms from <algorithm> and <numeric>.
Also, this patch makes sure that configuration comes via standard headers.
Directly including pstl_config.h in implementation files is incompatible
with inclusion of pstl into a standard library implementation which
provides it's own library wide configuration and may configure the
library differently to the pstl_config.h used by the standalone
implementation.
Differential Revision: https://reviews.llvm.org/D59122
llvm-svn: 357189
__PSTL_USE_PAR_POLICIES is the wrong macro to use there, since the PSTL
could conceivably be using parallel policies but not TBB as a backend.
llvm-svn: 356935
The previous test system would only print errors to stderr, however CMake
(and lit) detect failure via the program returning a non-zero error code.
So all the tests would always pretend they passed.
llvm-svn: 356921
Louis Dionne