[PATCH] D122831: [OpenMP] Make the new offloading driver the default

[Joseph Huber via Phabricator via cfe-commits]

jhuber6 created this revision.
jhuber6 added reviewers: jdoerfert, JonChesterfield, grokos, ABataev, ronlieb, tianshilei1992, saiislam.
Herald added subscribers: asavonic, kerbowa, guansong, yaxunl, mgorny, jvesely.
Herald added a project: All.
jhuber6 requested review of this revision.
Herald added subscribers: openmp-commits, cfe-commits, sstefan1, MaskRay.
Herald added projects: clang, OpenMP.

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 <https://reviews.llvm.org/D122683>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122831

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

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