[clang] [llvm] [clang][X86] Return Win64 __int128 indirectly (PR #210358)

Tue Jul 21 04:33:01 PDT 2026

mati865 wrote:

> following GCC certainly is reasonable

It was just merged, so could be still reverted without any impact if necessary.

> I thought perhaps there'd be discussion on the GCC issue tracker, but I didn't see any discussion of tradeoffs there on their side. I don't know how to get visibility into their reviews, maybe it's all mailing lists.

@rnk I'm afraid the reasoning for accepting this change is not what you'd hope it to be: https://inbox.sourceware.org/gcc-patches/e8466068-c531-4435-9b21-2c6fd66f3e59@gmail.com/

FWIW I personally take no side here. ABI discussions are beyond me.

https://github.com/llvm/llvm-project/pull/210358