[PATCH] D134687: [clang] Ensure correct metadata for relative vtables

[Leonard Chan via Phabricator via cfe-commits]

leonardchan created this revision.
leonardchan added reviewers: phosek, mcgrathr, tejohnson, pcc.
leonardchan added a project: clang.
Herald added a subscriber: Prazek.
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leonardchan requested review of this revision.

Prior to this, metadata pertaining to the size or address point offsets into a relative vtable were twice the value they should be (treating component widths as pointer width rather than 4 bytes). This prevented some vtables from being devirtualized with D134320 <https://reviews.llvm.org/D134320>. This ensures the correct metadata is written so whole program devirtualization can catch these remaining devirt targets.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134687

Files:
  clang/lib/CodeGen/CGVTables.cpp
  clang/lib/CodeGen/CGVTables.h
  clang/lib/CodeGen/CodeGenModule.h
  clang/test/CodeGenCXX/type-metadata.cpp

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