[clang] [clang] Return larger CXX records in memory (PR #120670)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

You can cherry-pick this to the 20.x branch if you want; we can still land fixes like this for a few weeks after the branch is created.

https://github.com/llvm/llvm-project/pull/120670