[cxx-interop] Remove compatibility versions #85869
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rdar://165919353
This removes the C++ interop compat version mechanism. It was added in mid-2023 and was never used. It complicates the testing story, and makes it harder to reason about the compiler's behavior. It also isn't compatible with explicit module builds. The flag `-cxx-interoperability-mode` is preserved, so projects that use the flag will continue to build normally. rdar://165919353
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@swift-ci please test |
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@swift-ci please test macOS |
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@swift-ci please test Windows |
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This removes the C++ interop compat version mechanism. It was added in mid-2023 and was never used. It complicates the testing story, and makes it harder to reason about the compiler's behavior. It also isn't compatible with explicit module builds.
The flag
-cxx-interoperability-modeis preserved, so projects that use the flag will continue to build normally.rdar://165919353