[OFFLOAD] Add a check before calling dataExchange (#176853)

Per documentation the call to dataExchange API (move memory block
between different devices) is permitted only if isDataExchangable() call
returned true. While almost all platforms support memory transfer
between different devices, in the case when the transfer is attempted
between devices belonging to different platforms if they are present on
the same machine which can lead to unexpected results. This PR adds a
check if dataExchange can be called and if not uses a workaround by
initiating memory transfer through host.
1 file changed
tree: 1bbedcc19933c93bf18f9d6db6a37b6f928593ad
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libsycl/
  16. libunwind/
  17. lld/
  18. lldb/
  19. llvm/
  20. llvm-libgcc/
  21. mlir/
  22. offload/
  23. openmp/
  24. orc-rt/
  25. polly/
  26. runtimes/
  27. third-party/
  28. utils/
  29. .clang-format
  30. .clang-format-ignore
  31. .clang-tidy
  32. .git-blame-ignore-revs
  33. .gitattributes
  34. .gitignore
  35. .mailmap
  36. CODE_OF_CONDUCT.md
  37. CONTRIBUTING.md
  38. LICENSE.TXT
  39. pyproject.toml
  40. README.md
  41. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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