[PATCH] D16758: [OpenMP] Prevent nesting of target constructs within target code execution regions.

[Arpith Jacob via cfe-commits]

arpith-jacob created this revision.
arpith-jacob added reviewers: hfinkel, kkwli0, sfantao, carlo.bertolli, ABataev.
arpith-jacob added subscribers: cfe-commits, fraggamuffin, caomhin.

This patch enhances Sema to check for the following restriction:

OpenMP 4.5 [2.17 Nesting of Regions]
If a target, target update, target data, target enter data, or
target exit data construct is encountered during execution of a
target region, the behavior is unspecified.

http://reviews.llvm.org/D16758

Files:
  include/clang/Basic/OpenMPKinds.h
  lib/Basic/OpenMPKinds.cpp
  lib/Sema/SemaOpenMP.cpp
  test/OpenMP/distribute_private_messages.cpp
  test/OpenMP/nesting_of_regions.cpp
  test/OpenMP/target_data_device_messages.cpp
  test/OpenMP/target_device_messages.cpp
  test/OpenMP/target_if_messages.cpp
  test/OpenMP/target_messages.cpp
  test/OpenMP/target_parallel_default_messages.cpp
  test/OpenMP/target_parallel_device_messages.cpp
  test/OpenMP/target_parallel_firstprivate_messages.cpp
  test/OpenMP/target_parallel_if_messages.cpp
  test/OpenMP/target_parallel_map_messages.cpp
  test/OpenMP/target_parallel_messages.cpp
  test/OpenMP/target_parallel_num_threads_messages.cpp
  test/OpenMP/target_parallel_private_messages.cpp
  test/OpenMP/target_parallel_proc_bind_messages.cpp
  test/OpenMP/target_parallel_reduction_messages.cpp
  test/OpenMP/target_parallel_shared_messages.cpp
  test/OpenMP/target_private_messages.cpp
  test/OpenMP/teams_reduction_messages.cpp

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