[PATCH] D98220: [WPD][ELF] Allow whole program devirtualization for version script localized symbols

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

@lanza I did not know that `-flto -fvisibility=hidden -fwhole-program-vtables -fvirtual-function-elimination` create s`!vcall_visibility VCallVisibilityLinkageUnit`.
With `VCallVisibilityLinkageUnit`, WPD will be performed, no need for this change (`test/ThinLTO/X86/devirt_vcall_vis_hidden.ll`).
This change specifically handles localization via a `local:` version node in a version script, where WPD was not performed previously.


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  https://reviews.llvm.org/D98220/new/

https://reviews.llvm.org/D98220