Add build option LIBOMP_OMP_VERSION=50, 5.0 headers, and add the year/month
associated with OpenMP 5.0 in relevant source locations. Also, remove the
deprecated LIBOMP_OMP_VERSION=41 option.
Patch by Olga Malysheva
Differential Revision: https://reviews.llvm.org/D30450
llvm-svn: 297083
This set of changes enables the affinity interface (Either the preexisting
native operating system or HWLOC) to be dynamically set at runtime
initialization. The point of this change is that we were seeing performance
degradations when using HWLOC. This allows the user to use the old affinity
mechanisms which on large machines (>64 cores) makes a large difference in
initialization time.
These changes mostly move affinity code under a small class hierarchy:
KMPAffinity
class Mask {}
KMPNativeAffinity : public KMPAffinity
class Mask : public KMPAffinity::Mask
KMPHwlocAffinity
class Mask : public KMPAffinity::Mask
Since all interface functions (for both affinity and the mask implementation)
are virtual, the implementation can be chosen at runtime initialization.
Differential Revision: https://reviews.llvm.org/D26356
llvm-svn: 286890
OpenMP 4.1 is now OpenMP 4.5. Any mention of 41 or 4.1 is replaced with
45 or 4.5. Also, if the CMake option LIBOMP_OMP_VERSION is 41, CMake warns that
41 is deprecated and to use 45 instead.
llvm-svn: 272687
These changes allow libhwloc to be used as the topology discovery/affinity
mechanism for libomp. It is supported on Unices. The code additions:
* Canonicalize KMP_CPU_* interface macros so bitmask operations are
implementation independent and work with both hwloc bitmaps and libomp
bitmaps. So there are new KMP_CPU_ALLOC_* and KMP_CPU_ITERATE() macros and
the like. These are all in kmp.h and appropriately placed.
* Hwloc topology discovery code in kmp_affinity.cpp. This uses the hwloc
interface to create a libomp address2os object which the rest of libomp knows
how to handle already.
* To build, use -DLIBOMP_USE_HWLOC=on and
-DLIBOMP_HWLOC_INSTALL_DIR=/path/to/install/dir [default /usr/local]. If CMake
can't find the library or hwloc.h, then it will tell you and exit.
Differential Revision: http://reviews.llvm.org/D13991
llvm-svn: 254320
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
Two symbols for the external debugger support were incorrectly exported when LIBOMP_USE_DEBUGGER=off.
Differential Revision: http://reviews.llvm.org/D11763
llvm-svn: 244217
clean up the build.
This disables all of the Clang warnings that fire for me when building
libomp.so on Linux with a recent Clang binary. Lots of these should
probably be fixed, but I want to at least get the build warning-clean
and make it easy to keep that way.
I also switched a bunch of the warnings that are used both for C and C++
compiles to check the flag with C compilation test.
Differential Revision: http://reviews.llvm.org/D11253
llvm-svn: 242604
I apologize for this nasty commit, but I somehow overlooked Chandler's
comment to re-indent these files to two space indention. I know this
is a horrible commit, but I figured if it was done quickly after the
first one, not too many conflicts would arise.
Again, I'm sorry and won't do this again.
llvm-svn: 242301
This commit improves numerous functionalities of the OpenMP CMake build
system to be more conducive with LLVM's build system and build philosophies.
The CMake build system, as it was before this commit, was not up to LLVM's
standards and did not implement the configuration stage like most CMake based
build systems offer (check for compiler flags, libraries, etc.) In order to
improve it dramatically in a short period of time, a large refactoring had
to be done.
The main changes done with this commit are as follows:
* Compiler flag checks - The flags are no longer grabbed from compiler specific
directories. They are checked for availability in config-ix.cmake and added
accordingly inside LibompHandleFlags.cmake.
* Feature checks were added in config-ix.cmake. For example, the standard CMake
module FindThreads is probed for the threading model to use inside the OpenMP
library.
* OS detection - There is no longer a LIBOMP_OS variable, OS-specifc build logic
is wrapped around the WIN32 and APPLE macros with !(WIN32 OR APPLE) meaning
a Unix flavor of some sort.
* Got rid of vestigial functions/macros/variables
* Added new libomp_append() function which is used everywhere to conditionally
or undconditionally append to a list
* All targets have the libomp prefix so as not to interfere with any other
project
* LibompCheckLinkerFlag.cmake module was added which checks for linker flags
specifically for building shared libraries.
* LibompCheckFortranFlag.cmake module was added which checks for fortran flag
availability.
* Removed most of the cruft from the translation between the perl+Makefile based
build system and this one. The remaining components that they share are
perl scripts which I'm in the process of removing.
There is still more left to do. The perl scripts still need to be removed, and
a config.h.in file (or similarly named) needs to be added with #cmakedefine lines
in it. But this is a much better first step than the previous system.
Differential Revision: http://reviews.llvm.org/D10656
llvm-svn: 242298
Jonathan Peyton