[all-commits] [llvm/llvm-project] ae23be: [OpenMP] Make the new offloading driver the default

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ae23be84cb60357829078e832613660bfe98687f
      https://github.com/llvm/llvm-project/commit/ae23be84cb60357829078e832613660bfe98687f
  Author: Joseph Huber <jhuber6 at vols.utk.edu>
  Date:   2022-04-18 (Mon, 18 Apr 2022)

  Changed paths:
    M clang/include/clang/Driver/Options.td
    M clang/lib/Driver/Driver.cpp
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/Driver/amdgpu-openmp-system-arch.c
    A clang/test/Driver/amdgpu-openmp-toolchain-new.c
    M clang/test/Driver/amdgpu-openmp-toolchain.c
    M clang/test/Driver/fat_archive_amdgpu.cpp
    M clang/test/Driver/fat_archive_nvptx.cpp
    A clang/test/Driver/openmp-offload-gpu-new.c
    M clang/test/Driver/openmp-offload-gpu.c
    M clang/test/Driver/openmp-offload.c
    M clang/test/OpenMP/driver-openmp-target.c
    M openmp/libomptarget/CMakeLists.txt
    M openmp/libomptarget/plugins/CMakeLists.txt
    M openmp/libomptarget/plugins/amdgpu/CMakeLists.txt
    M openmp/libomptarget/plugins/cuda/CMakeLists.txt
    M openmp/libomptarget/test/lit.cfg
    M openmp/libomptarget/test/mapping/data_member_ref.cpp
    M openmp/libomptarget/test/mapping/declare_mapper_nested_default_mappers.cpp
    M openmp/libomptarget/test/mapping/declare_mapper_nested_mappers.cpp
    M openmp/libomptarget/test/mapping/lambda_by_value.cpp
    M openmp/libomptarget/test/mapping/lambda_mapping.cpp
    M openmp/libomptarget/test/mapping/ompx_hold/struct.c
    M openmp/libomptarget/test/offloading/bug49021.cpp
    M openmp/libomptarget/test/offloading/bug49334.cpp
    M openmp/libomptarget/test/offloading/bug49779.cpp
    M openmp/libomptarget/test/offloading/bug51781.c
    M openmp/libomptarget/test/offloading/host_as_target.c
    M openmp/libomptarget/test/offloading/memory_manager.cpp
    M openmp/libomptarget/test/offloading/parallel_offloading_map.cpp
    M openmp/libomptarget/test/offloading/static_linking.c
    M openmp/libomptarget/test/offloading/taskloop_offload_nowait.cpp
    M openmp/libomptarget/test/unified_shared_memory/api.c

  Log Message:
  -----------
  [OpenMP] Make the new offloading driver the default

Previously an opt-in flag `-fopenmp-new-driver` was used to enable the
new offloading driver. After passing tests for a few months it should be
sufficiently mature to flip the switch and make it the default. The new
offloading driver is now enabled if there is OpenMP and OpenMP
offloading present and the new `-fno-openmp-new-driver` is not present.

The new offloading driver has three main benefits over the old method:
- Static library support
- Device-side LTO
- Unified clang driver stages

Depends on D122683

Differential Revision: https://reviews.llvm.org/D122831


  Commit: 15e62062c0c919ac1fa28d6f0c9f438063da2286
      https://github.com/llvm/llvm-project/commit/15e62062c0c919ac1fa28d6f0c9f438063da2286
  Author: Joseph Huber <jhuber6 at vols.utk.edu>
  Date:   2022-04-18 (Mon, 18 Apr 2022)

  Changed paths:
    M clang/docs/ClangCommandLineReference.rst
    M clang/docs/OffloadingDesign.rst
    M clang/docs/OpenMPSupport.rst

  Log Message:
  -----------
  [Clang][Docs] Update information on the new driver now that it's default

Summary:
This patch updates some of the documentation on the new driver now that
it's the default. Also the ABI for embedding these images changed.


Compare: https://github.com/llvm/llvm-project/compare/9ec501da76fc...15e62062c0c9