forked from OSchip/llvm-project
c274b19866
A new rule is added in 5.0: If a list item appears in a reduction, lastprivate or linear clause on a combined target construct then it is treated as if it also appears in a map clause with a map-type of tofrom. Currently map clauses for all capture variables are added implicitly. But missing for list item of expression for array elements or array sections. The change is to add implicit map clause for array of elements used in reduction clause. Skip adding map clause if the expression is not mappable. Noted: For linear and lastprivate, since only variable name is accepted, the map has been added though capture variables. To do so: During the mappable checking, if error, ignore diagnose and skip adding implicit map clause. The changes: 1> Add code to generate implicit map in ActOnOpenMPExecutableDirective, for omp 5.0 and up. 2> Add extra default parameter NoDiagnose in ActOnOpenMPMapClause: Use that to skip error as well as skip adding implicit map during the mappable checking. Note: there are only tow places need to be check for NoDiagnose. Rest of them either the check is for < omp 5.0 or the error already generated for reduction clause. Differential Revision: https://reviews.llvm.org/D108132 |
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|---|---|---|
| .. | ||
| DeviceRTL | ||
| cmake/Modules | ||
| deviceRTLs | ||
| include | ||
| plugins | ||
| src | ||
| test | ||
| tools | ||
| utils | ||
| CMakeLists.txt | ||
| 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.