[PATCH] D100388: [BROKEN][clang] Try to fix thunk function types

[Roman Lebedev via Phabricator via cfe-commits]

lebedev.ri added inline comments.


================
Comment at: clang/lib/CodeGen/CGVTables.cpp:467
+  if (!CalleeMD->isDefined()) {
+    CGM.ErrorUnsupported(ThunkGD.getDecl(), "thunk for forward declaration");
+    return;
----------------
efriedma wrote:
> "IsUnprototyped" means that we have to generate a thunk, but we don't have the proper types. We emit some special IR with known incorrect types, and mark it with the "thunk" attribute to let the optimizer know what we're doing.
> 
> It should be fine to continue using a fake type on the IsUnprototyped codepath.
`IsUnprototyped` is false here for that test though..


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D100388/new/

https://reviews.llvm.org/D100388