LLVM_DECLARE_REGISTRY

Declared in <llvm/Support/Registry.h>

The LLVM_ABI_EXPORT (i.e. __delcpsec(dllexport) on Win32) attached to the declaration is mandatory since MSVC disallows adding dllexport after the first non‐exported specialization declaration, and it is generally safe. All of link.exe, ld.bfd, and lld‐link will attempt to import undefined symbols (including template specializations) from DLLs, even if the symbol is declared with dllexport, just like non‐imported symbols. The dllimport attribute is not eligible here, since the specialization may or may not be defined in the same object, a static library, or an import library.

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