rjmccall added inline comments.

================
Comment at: lib/CodeGen/CGCall.cpp:4035
+          V = Builder.CreatePointerBitCastOrAddrSpaceCast(V, DestTy);
+        }
 
----------------
mikael wrote:
> rjmccall wrote:
> > Always use the `performAddrSpaceConversion` target hook if there's a 
> > semantic address-space conversion required.  But really, this doesn't seem 
> > like the right place to be doing this; it ought to happen higher up when 
> > we're adding the `this` argument to the call, either explicitly in IRGen or 
> > implicitly by expecting the object expression to already yield a value in 
> > the right address space.
> > 
> > I could definitely believe that we don't currently create `CastExpr`s for 
> > simple qualification conversions of the object argument of a C++ method 
> > call, since (ignoring these address-space conversions) they're always 
> > trivial.
> Thanks for the input! It seems like the name `performAddrSpaceConversion` 
> does not exist in the code-base though.
Sorry, `performAddrSpaceCast`.


Repository:
  rC Clang

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D54862/new/

https://reviews.llvm.org/D54862



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