[clang] [clang][X86] Ignore ABI-empty fields and base classes in X86_64 SysV ABI classification algorithm (PR #187814)

[Phoebe Wang via cfe-commits]

phoebewang wrote:

> Hi @phoebewang, the PlayStation ABI Is locked because we need to ensure backwards compatibly so that old games, including all PS4 games, still run on PS5.

How about adding a new ABI version like https://github.com/llvm/llvm-project/commit/e8a486ea97895a18e1bba75431d37d9758886084? Changing ABI is unfortunate, and there are always customers care about compatibly.

https://github.com/llvm/llvm-project/pull/187814