9d99b482cd
This patch updates lowering to produce the correct fir.class types for various polymorphic and unlimited polymoprhic entities cases. This is only the lowering. Some TODOs have been added to the CodeGen part to avoid errors since this part still need to be updated as well. The fir.class<*> representation for unlimited polymorphic entities mentioned in the document has been updated to fir.class<none> to avoid useless work in pretty parse/printer. This patch is part of the implementation of the poltymorphic entities. https://github.com/llvm/llvm-project/blob/main/flang/docs/PolymorphicEntities.md Depends on D134957 Reviewed By: jeanPerier Differential Revision: https://reviews.llvm.org/D134959