================
@@ -1056,12 +1056,18 @@ class ConstantPtrAuth final : public Constant {
return !getAddrDiscriminator()->isNullValue();
}
- /// A constant value for the address discriminator which has special
- /// significance to ctors/dtors lowering. Regular address discrimination
can't
- /// be applied for them since uses of llvm.global_{c|d}tors are disallowed
- /// (see Verifier::visitGlobalVariable) and we can't emit getelementptr
- /// expressions referencing these special arrays.
- enum { AddrDiscriminator_CtorsDtors = 1 };
+ /// Constant values for the address discriminator which have special
+ /// significance to lowering in some contexts.
+ /// - For ctors/dtors, regular address discrimination can't
+ /// be applied for them since uses of llvm.global_{c|d}tors are disallowed
+ /// (see Verifier::visitGlobalVariable) and we can't emit getelementptr
+ /// expressions referencing these special arrays.
+ /// - For vtable pointers of std::type_info and classes derived from it,
+ /// we do not know the storage address when emitting ptrauth constant.
----------------
kovdan01 wrote:
@ahmedbougacha @efriedma-quic Should be fixed in
0c20bcdf35f3c15024986da50cafb2a8c155e3cf
https://github.com/llvm/llvm-project/pull/102199
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