[all-commits] [llvm/llvm-project] a2dbfb: [OpenMP] Simplify offloading parallel call codegen

[Giorgis Georgakoudis via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a2dbfb6b72db19ed851464160ef7539b50d43894
      https://github.com/llvm/llvm-project/commit/a2dbfb6b72db19ed851464160ef7539b50d43894
  Author: Giorgis Georgakoudis <georgakoudis1 at llnl.gov>
  Date:   2021-04-21 (Wed, 21 Apr 2021)

  Changed paths:
    M clang/lib/CodeGen/CGOpenMPRuntimeGPU.cpp
    M clang/test/OpenMP/nvptx_allocate_codegen.cpp
    M clang/test/OpenMP/nvptx_data_sharing.cpp
    M clang/test/OpenMP/nvptx_distribute_parallel_generic_mode_codegen.cpp
    M clang/test/OpenMP/nvptx_lambda_capturing.cpp
    A clang/test/OpenMP/nvptx_multi_target_parallel_codegen.cpp
    A clang/test/OpenMP/nvptx_nested_parallel_codegen.cpp
    M clang/test/OpenMP/nvptx_parallel_codegen.cpp
    M clang/test/OpenMP/nvptx_parallel_for_codegen.cpp
    M clang/test/OpenMP/nvptx_target_codegen.cpp
    M clang/test/OpenMP/nvptx_target_parallel_codegen.cpp
    M clang/test/OpenMP/nvptx_target_parallel_num_threads_codegen.cpp
    M clang/test/OpenMP/nvptx_target_teams_codegen.cpp
    M clang/test/OpenMP/nvptx_target_teams_distribute_codegen.cpp
    M clang/test/OpenMP/nvptx_target_teams_distribute_parallel_for_codegen.cpp
    M clang/test/OpenMP/nvptx_target_teams_distribute_parallel_for_generic_mode_codegen.cpp
    M clang/test/OpenMP/nvptx_target_teams_distribute_parallel_for_simd_codegen.cpp
    M clang/test/OpenMP/nvptx_teams_reduction_codegen.cpp
    M clang/test/OpenMP/remarks_parallel_in_multiple_target_state_machines.c
    M clang/test/OpenMP/remarks_parallel_in_target_state_machine.c
    M clang/test/OpenMP/target_parallel_debug_codegen.cpp
    M clang/test/OpenMP/target_parallel_for_debug_codegen.cpp
    M llvm/include/llvm/Frontend/OpenMP/OMPKinds.def
    M llvm/lib/Transforms/IPO/OpenMPOpt.cpp
    M llvm/test/Transforms/OpenMP/gpu_state_machine_function_ptr_replacement.ll
    A openmp/libomptarget/deviceRTLs/common/generated_microtask_cases.gen
    M openmp/libomptarget/deviceRTLs/common/src/omptarget.cu
    M openmp/libomptarget/deviceRTLs/common/src/parallel.cu
    M openmp/libomptarget/deviceRTLs/common/src/support.cu
    M openmp/libomptarget/deviceRTLs/common/support.h
    M openmp/libomptarget/deviceRTLs/interface.h
    A openmp/libomptarget/test/offloading/bug49779.cpp
    A openmp/libomptarget/utils/generate_microtask_cases.py

  Log Message:
  -----------
  [OpenMP] Simplify offloading parallel call codegen

This revision simplifies Clang codegen for parallel regions in OpenMP GPU target offloading and corresponding changes in libomptarget: SPMD/non-SPMD parallel calls are unified under a single `kmpc_parallel_51` runtime entry point for parallel regions (which will be commonized between target, host-side parallel regions), data sharing is internalized to the runtime. Tests have been auto-generated using `update_cc_test_checks.py`. Also, the revision contains changes to OpenMPOpt for remark creation on target offloading regions.

Reviewed By: jdoerfert, Meinersbur

Differential Revision: https://reviews.llvm.org/D95976