llvm-project/openmp/libomptarget
Shilei Tian aab62aab04 [OpenMP][Offloading] Fixed a crash caused by dereferencing nullptr
In function `DeviceTy::getTargetPointer`, `Entry` could be `nullptr` because of
zero length array section. We need to check if it is a valid iterator before
using it.

Reviewed By: ronlieb

Differential Revision: https://reviews.llvm.org/D116716
2022-01-05 23:04:29 -05:00
..
DeviceRTL [OpenMP][FIX] Change globalization alignment to 16 2021-12-27 16:58:25 -05:00
cmake/Modules [NFC][libomptarget] Fixed -DLLVM_ENABLE_RUNTIMES="openmp" build. 2021-06-18 09:20:10 -07:00
deviceRTLs [OpenMP][FIX] Pass the num_threads value directly to parallel_51 2021-12-09 16:30:29 -05:00
docs [NFC] Initial documentation for declare target indirect support. 2021-11-08 15:12:03 -08:00
include [OpenMP][Offloading] Fixed data race in libomptarget caused by async data movement 2022-01-05 20:20:04 -05:00
plugins [OpenMP][CUDA] Add resource pool for CUevent 2021-12-28 17:42:38 -05:00
src [OpenMP][Offloading] Fixed a crash caused by dereferencing nullptr 2022-01-05 23:04:29 -05:00
test [OpenMP] Add missing `tt_hidden_helper_task_encountered` along with `tt_found_proxy_tasks` 2021-12-29 23:22:53 -05:00
tools [OpenMP] Fixing llvm-omp-device-info compilation with runtimes 2021-07-30 13:09:08 -05:00
utils Revert "[OpenMP] Codegen aggregate for outlined function captures" 2021-09-21 13:20:39 -07:00
CMakeLists.txt Revert "[openmp] Add OMPT initialization in libomptarget" 2021-11-10 12:44:25 +01:00
README.txt

README.txt

    README for the LLVM* OpenMP* Offloading Runtime Library (libomptarget)
    ======================================================================

How to Build the LLVM* OpenMP* Offloading Runtime Library (libomptarget)
========================================================================
In-tree build:

$ cd where-you-want-to-live
Check out openmp (libomptarget lives under ./libomptarget) into llvm/projects
$ cd where-you-want-to-build
$ mkdir build && cd build
$ cmake path/to/llvm -DCMAKE_C_COMPILER=<C compiler> -DCMAKE_CXX_COMPILER=<C++ compiler>
$ make omptarget

Out-of-tree build:

$ cd where-you-want-to-live
Check out openmp (libomptarget lives under ./libomptarget)
$ cd where-you-want-to-live/openmp/libomptarget
$ mkdir build && cd build
$ cmake path/to/openmp -DCMAKE_C_COMPILER=<C compiler> -DCMAKE_CXX_COMPILER=<C++ compiler>
$ make

For details about building, please look at README.rst in the parent directory.

Architectures Supported
=======================
The current library has been only tested in Linux operating system and the
following host architectures:
* Intel(R) 64 architecture
* IBM(R) Power architecture (big endian)
* IBM(R) Power architecture (little endian)
* ARM(R) AArch64 architecture (little endian)

The currently supported offloading device architectures are:
* Intel(R) 64 architecture (generic 64-bit plugin - mostly for testing purposes)
* IBM(R) Power architecture (big endian) (generic 64-bit plugin - mostly for testing purposes)
* IBM(R) Power architecture (little endian) (generic 64-bit plugin - mostly for testing purposes)
* ARM(R) AArch64 architecture (little endian) (generic 64-bit plugin - mostly for testing purposes)
* CUDA(R) enabled 64-bit NVIDIA(R) GPU architectures

Supported RTL Build Configurations
==================================
Supported Architectures: Intel(R) 64, IBM(R) Power 7 and Power 8

              ---------------------------
              |   gcc      |   clang    |
--------------|------------|------------|
| Linux* OS   |  Yes(1)    |  Yes(2)    |
-----------------------------------------

(1) gcc version 4.8.2 or later is supported.
(2) clang version 3.7 or later is supported.


Front-end Compilers that work with this RTL
===========================================

The following compilers are known to do compatible code generation for
this RTL:
  - clang (from https://github.com/clang-ykt )
  - clang (development branch at http://clang.llvm.org - several features still
    under development)

-----------------------------------------------------------------------

Notices
=======
This library and related compiler support is still under development, so the
employed interface is likely to change in the future.

*Other names and brands may be claimed as the property of others.