AlexVlx added inline comments.

================
Comment at: clang/lib/CodeGen/ItaniumCXXABI.cpp:1630-1632
+    LangAS AS = CGM.GetGlobalVarAddressSpace(nullptr);
+    QualType Q = Context.getAddrSpaceQualType(Context.VoidPtrTy, AS);
+    QualType T = Context.getPointerType(Q);
----------------
yaxunl wrote:
> Does it worth extracting the code as Context.getVTTType() since it is used at 
> three locations. Since VTT seems to be immutable, in case we want to put it 
> in constant addr space in the future, it will make things easier.
That's not a bad idea. I think it might be profitable to do something like 
`Context.getVTableType()`, since there's actually 2.5 interlinked things here 
(VTT, vtable & vptr), and it makes intuitive to me to base it all around that 
(vptr points to vtbl) etc.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D150746/new/

https://reviews.llvm.org/D150746

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