Only 64-bit targets for now. Enabling this on 32-bit x86 requires additional work, as we need to provide exception helpers for modules that don’t link against msvcrt/ucrt. LLVM currently does not support `__try`/`__except` on 32-bit ARM.
While `__try`/`__except` is generally available on the MinGW target with `-fms-extensions`, `-fasync-exceptions` is currently supported only on the MSVC target. For that reason, I did not enable it for the MinGW target.
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https://gitlab.winehq.org/wine/wine/-/merge_requests/8112