Jing Zhang

[CIR][CIRGen][LLVMLowering] Vtable support for simple multiple inhertance without thunk

2

This PR adds Vtable support for C++ multiple inheritance without thunk. This change contains the CIR codegen and lowering work: 1. `VTableAttr` should allow adding multiple `ArrayAttr` for multi-inheritance. 3....

Vtable support for simple multiple inheritance without thunk

2

I found that CIR currently does not support multiple inheritance, so I am trying to support this feature. However, I encountered two issues: 1. Due to offset-to-top in vtable being...

[CIR][CIRGen] Support CodeGen for vbase constructors

5

1. Add new `cir.vtt.address_point` op for visiting the element of VTT to initialize the virtual pointer. 2. Implement `getVirtualBaseClassOffset` method which provides a virtual offset to adjust to the actual...