================
@@ -1180,6 +1185,21 @@ bool CodeGenVTables::isVTableExternal(const
CXXRecordDecl *RD) {
TSK == TSK_ExplicitInstantiationDefinition)
return false;
+ // Itanium C++ ABI [5.2.3]:
+ // Virtual tables for dynamic classes are emitted as follows:
+ //
+ // - If the class is templated, the tables are emitted in every object that
+ // references any of them.
+ // - Otherwise, if the class is attached to a module, the tables are uniquely
+ // emitted in the object for the module unit in which it is defined.
+ // - Otherwise, if the class has a key function (see below), the tables are
+ // emitted in the object for the translation unit containing the definition
of
+ // the key function. This is unique if the key function is not inline.
+ // - Otherwise, the tables are emitted in every object that references any of
+ // them.
+ if (Module *M = RD->getOwningModule(); M && M->isNamedModule())
----------------
dwblaikie wrote:
I guess doing it through the `hasExternalDefinitions` system suggested above
might reduce the number of special cases here, if there was a nice way to do
address the code V debug info use.
https://github.com/llvm/llvm-project/pull/75912
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