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Differential D142358 Diff 491605 clang/docs/ReleaseNotes.rst

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clang/docs/ReleaseNotes.rst

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ABI Changes in Clang ABI Changes in Clang
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- GCC doesn't pack non-POD members in packed structs unless the packed - GCC doesn't pack non-POD members in packed structs unless the packed
attribute is also specified on the member. Clang historically did perform attribute is also specified on the member. Clang historically did perform
such packing. Clang now matches the gcc behavior (except on Darwin and PS4). such packing. Clang now matches the gcc behavior
(except on Darwin, PS4 and AIX).
hubert.reinterpretcastUnsubmitted
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This line also needs update.

hubert.reinterpretcast: This line also needs update.
You can switch back to the old ABI behavior with the flag: You can switch back to the old ABI behavior with the flag:
``-fclang-abi-compat=15.0``. ``-fclang-abi-compat=15.0``.
- GCC allows POD types to have defaulted special members. Clang historically - GCC allows POD types to have defaulted special members. Clang historically
classified such types as non-POD (for the purposes of Itanium ABI). Clang now classified such types as non-POD (for the purposes of Itanium ABI). Clang now
matches the gcc behavior (except on Darwin and PS4). You can switch back to matches the gcc behavior (except on Darwin, PS4, AIX and z/OS). You can switch
dblaikieUnsubmitted
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Might need some line wrapping here?

dblaikie: Might need some line wrapping here?
the old ABI behavior with the flag: ``-fclang-abi-compat=15.0``. back to the old ABI behavior with the flag: ``-fclang-abi-compat=15.0``.
OpenMP Support in Clang OpenMP Support in Clang
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CUDA Support in Clang CUDA Support in Clang
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