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Reviewers: jdoerfert, Jim
Reviewed By: Jim
Subscribers: Jim, mgorny, guansong, jfb, openmp-commits
Tags: #openmp
Differential Revision: https://reviews.llvm.org/D72285
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Fix last warned location in ittnotify_static.cpp using the defined
macro KMP_FALLTHROUGH().
Differential Revision: https://reviews.llvm.org/D65871
llvm-svn: 369003
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This patch fixes problem raised in post-review comments of the
https://reviews.llvm.org/D65285. Developers of ittnotify confirmed
that dll_path_ptr field of the __itt_global structure is never used
by ittnotify library, so it is safe to remove the dll_path array.
Differential Revision: https://reviews.llvm.org/D65885
llvm-svn: 368559
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All other files are already C++ and the build system has always
passed '-x c++' for C files, effectively compiling them as C++.
To stay warning free we need one fix in ittnotify_static.{c,cpp}:
The variable dll_path can be written to, so it must not be const.
GCC complained with -Wcast-qual and I think it's right.
Differential Revision: https://reviews.llvm.org/D65285
llvm-svn: 367343
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This is a port of libomp for the RISC-V 64-bit Linux target.
We have tested this port on a HiFive Unleashed development board
using a downstream LLVM that has support for the missing bits in
upstream. As of now, all tests are passing, including OMPT.
Patch by Ferran Pallarès!
Differential Revision: https://reviews.llvm.org/D59880
llvm-svn: 367021
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to reflect the new license. These used slightly different spellings that
defeated my regular expressions.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351648
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Patch by Peiyuan Song <squallatf@gmail.com>
Differential Revision: https://reviews.llvm.org/D53422
llvm-svn: 348756
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Patch by samuel.thibault@ens-lyon.org
Differential Revision: https://reviews.llvm.org/D54079
llvm-svn: 346310
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This patch updates the ittnotify sources to the latest
corresponding with Intel(R) VTune(TM) Amplifier 2018
Differential Revision: https://reviews.llvm.org/D52378
llvm-svn: 343139
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This patch cleans up unused functions, variables, sign compare issues, and
addresses some -Warning flags which are now enabled including -Wcast-qual.
Not all the warning flags in LibompHandleFlags.cmake are enabled, but some
are with this patch.
Some __kmp_gtid_from_* macros in kmp.h are switched to static inline functions
which allows us to remove the awkward definition of KMP_DEBUG_ASSERT() and
KMP_ASSERT() macros which used the comma operator. This had to be done for the
innumerable -Wunused-value warnings related to KMP_DEBUG_ASSERT()
Differential Revision: https://reviews.llvm.org/D49105
llvm-svn: 339393
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Changes are: got all atomics to accept volatile pointers that allowed
to simplify many type conversions. Windows specific code fixed correspondingly.
Differential Revision: https://reviews.llvm.org/D35417
llvm-svn: 308164
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While importing libomp into the FreeBSD base system we encountered
Clang warnings that "'register' storage class specifier is deprecated
and incompatible with C++1z [-Wdeprecated-register]".
Differential Revision: https://reviews.llvm.org/D35124
llvm-svn: 307441
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Summary:
Implemented by Dejan Latinovic
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790735 for more more information
Reviewers: AndreyChurbanov, jlpeyton
Subscribers: openmp-commits, mgorny
Differential Revision: https://reviews.llvm.org/D26576
llvm-svn: 289032
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Summary:
When compiling the runtime library with clang we get warnings like:
```
error: passing an object that undergoes default argument promotion to 'va_start' has undefined behavior [-Werror,-Wvarargs]
va_start( args, id );
^
note: parameter of type 'kmp_i18n_id_t' (aka 'kmp_i18n_id') is declared here
kmp_i18n_id_t id,
```
My understanding is that the va_start macro only gets the promoted type so it won't know what was the exact type of the argument, which can potentially not work for some targets given that the implementation of the the calling convention could not be done properly.
This patch fixes that by using a built-in type in the function signature.
Reviewers: tlwilmar, jlpeyton, AndreyChurbanov
Subscribers: arpith-jacob, carlo.bertolli, caomhin, openmp-commits
Differential Revision: https://reviews.llvm.org/D22427
llvm-svn: 276428
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UNICODE and _UNICODE defintions were added in the LLVM CMake build system.
While on Unices, the UNICODE/_UNICODE macros don't cause problems, on Windows
only ittnotify_static.c should be compiled using -DUNICODE. We are still
looking at a proper fix, but this change sets the build back to exactly what it
was doing before. Also, a comment and TODO were added in the src/CMakeLists.txt
file to help explain.
llvm-svn: 274052
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That patch made all LLVM projects build with -DUNICODE. However, this doesn't
work for the OpenMP runtime.
But just overriding the flag with -UUNICODE breaks compiling ittnotify_static.c,
which for some reason needs to be compiled with -DUNICIODE. Note that compiling
ittnotify.h with -DUNICODE does not work though.
This seems like a mess. This commit fixes it for now, but it would be great
if someone who works on the OpenMP runtime could fix it properly.
llvm-svn: 273898
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This patch doesn't affect D19878's context. So D19878 still cleanly applies.
llvm-svn: 270252
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llvm-svn: 246434
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Currently, the libomp CMake build system uses a Perl script to configure files
(tools/expand-vars.pl). This patch replaces the use of the Perl script by using
CMake's configure_file() function. The major changes include:
1. *.var has every $KMP_* variable changed to @LIBOMP_*@
2. kmp_config.h.cmake is a new file which contains all the feature macros and
#cmakedefine lines
3. Most of the -D lines have been moved from LibompDefinitions.cmake but some
OS specific MACROs (e.g., _GNU_SOURCE) remain.
4. All expand-vars.pl related logic is removed from the CMake files.
One important note about this change is that it breaks the old Perl+Makefile
build system because it can't create kmp_config.h properly.
Differential Review: http://reviews.llvm.org/D12211
llvm-svn: 246314
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llvm-svn: 244034
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when compiling with gcc or clang numerous warnings concerning the usage
of extern "C" linkage. All the __kmp_itt_sync* variables are declared
like: extern "C" type __kmp_itt_sync... = definition; through various macros.
This note from cppreference.com explains why this is a problem.
// From http://en.cppreference.com/w/cpp/language/language_linkage
extern "C" int x; // a declaration and not a definition
// The above line is equivalent to extern "C" { extern int x; }
extern "C" { int x; } // a declaration and definition
Since the __kmp_itt_* variables are being declared and defined, these variables
should use the bracketed version instead.
llvm-svn: 239184
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llvm-svn: 225792
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understand that this is not friendly, and are working to change our
internal code-development to make it easier to make development
features available more frequently and in finer (more functional)
chunks. Unfortunately we haven't got that in place yet, and unpicking
this into multiple separate check-ins would be non-trivial, so please
bear with me on this one. We should be better in the future.
Apologies over, what do we have here?
GGC 4.9 compatibility
--------------------
* We have implemented the new entrypoints used by code compiled by GCC
4.9 to implement the same functionality in gcc 4.8. Therefore code
compiled with gcc 4.9 that used to work will continue to do so.
However, there are some other new entrypoints (associated with task
cancellation) which are not implemented. Therefore user code compiled
by gcc 4.9 that uses these new features will not link against the LLVM
runtime. (It remains unclear how to handle those entrypoints, since
the GCC interface has potentially unpleasant performance implications
for join barriers even when cancellation is not used)
--- new parallel entry points ---
new entry points that aren't OpenMP 4.0 related
These are implemented fully :-
GOMP_parallel_loop_dynamic()
GOMP_parallel_loop_guided()
GOMP_parallel_loop_runtime()
GOMP_parallel_loop_static()
GOMP_parallel_sections()
GOMP_parallel()
--- cancellation entry points ---
Currently, these only give a runtime error if OMP_CANCELLATION is true
because our plain barriers don't check for cancellation while waiting
GOMP_barrier_cancel()
GOMP_cancel()
GOMP_cancellation_point()
GOMP_loop_end_cancel()
GOMP_sections_end_cancel()
--- taskgroup entry points ---
These are implemented fully.
GOMP_taskgroup_start()
GOMP_taskgroup_end()
--- target entry points ---
These are empty (as they are in libgomp)
GOMP_target()
GOMP_target_data()
GOMP_target_end_data()
GOMP_target_update()
GOMP_teams()
Improvements in Barriers and Fork/Join
--------------------------------------
* Barrier and fork/join code is now in its own file (which makes it
easier to understand and modify).
* Wait/release code is now templated and in its own file; suspend/resume code is also templated
* There's a new, hierarchical, barrier, which exploits the
cache-hierarchy of the Intel(r) Xeon Phi(tm) coprocessor to improve
fork/join and barrier performance.
***BEWARE*** the new source files have *not* been added to the legacy
Cmake build system. If you want to use that fixes wil be required.
Statistics Collection Code
--------------------------
* New code has been added to collect application statistics (if this
is enabled at library compile time; by default it is not). The
statistics code itself is generally useful, the lightweight timing
code uses the X86 rdtsc instruction, so will require changes for other
architectures.
The intent of this code is not for users to tune their codes but
rather
1) For timing code-paths inside the runtime
2) For gathering general properties of OpenMP codes to focus attention
on which OpenMP features are most used.
Nested Hot Teams
----------------
* The runtime now maintains more state to reduce the overhead of
creating and destroying inner parallel teams. This improves the
performance of code that repeatedly uses nested parallelism with the
same resource allocation. Set the new KMP_HOT_TEAMS_MAX_LEVEL
envirable to a depth to enable this (and, of course, OMP_NESTED=true
to enable nested parallelism at all).
Improved Intel(r) VTune(Tm) Amplifier support
---------------------------------------------
* The runtime provides additional information to Vtune via the
itt_notify interface to allow it to display better OpenMP specific
analyses of load-imbalance.
Support for OpenMP Composite Statements
---------------------------------------
* Implement new entrypoints required by some of the OpenMP 4.1
composite statements.
Improved ifdefs
---------------
* More separation of concepts ("Does this platform do X?") from
platforms ("Are we compiling for platform Y?"), which should simplify
future porting.
ScaleMP* contribution
---------------------
Stack padding to improve the performance in their environment where
cross-node coherency is managed at the page level.
Redesign of wait and release code
---------------------------------
The code is simplified and performance improved.
Bug Fixes
---------
*Fixes for Windows multiple processor groups.
*Fix Fortran module build on Linux: offload attribute added.
*Fix entry names for distribute-parallel-loop construct to be consistent with the compiler codegen.
*Fix an inconsistent error message for KMP_PLACE_THREADS environment variable.
llvm-svn: 219214
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llvm-svn: 215093
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llvm-svn: 202018
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This release use aligns with Intel(r) Composer XE 2013 SP1 Product Update 2
New features
* The library can now be built with clang (though wiht some
limitations since clang does not support 128 bit floats)
* Support for Vtune analysis of load imbalance
* Code contribution from Steven Noonan to build the runtime for ARM*
architecture processors
* First implementation of runtime API for OpenMP cancellation
Bug Fixes
* Fixed hang on Windows (only) when using KMP_BLOCKTIME=0
llvm-svn: 197914
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llvm-svn: 191506
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