[Tracking Issue] Module-based Model Runtime Interface for AOT

[areusch]

This issue tracks the implementation of apache/tvm-rfcs#46 (Module-based Model Runtime Interface for AOT).

This RFC proposes a fairly wide-sweeping refactoring of the metadata exported from compiler to runtime. We plan to implement this in phases to ease code-review and unblock some downstream work dependent on the C-source-based AOTExecutor. Here are the steps:

• New Metadata classes (hand-written, without checking in the code-generator) to contain minimal metadata needed by AOTExecutor ([runtime] Add Metadata classes for AOTExecutor #10282)
• AOTExecutor implementation and c target code-generator ([runtime] AOTExecutor implementation and c target code-generator #10283)
• llvm target code-generator ([AOT] Support LLVM backend with C++ runtime #10753)
• Code-generator to auto-generate Metadata classes from a small Python description (PR not yet uploaded)
• Unify metadata passed from compiler to runtime using new Metadata classes

[driazati]

@areusch is this still in-progress?

[areusch]

ah yeah these two unfulfilled tasks haven't been done yet