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

[Pranav Kant via cfe-commits]

pranavk wrote:

> Shouldn't this have some sort of Release not maybe under the X86 section?

there's no x86 section in the release notes. So I added it in ABI section. 

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