[llvm-branch-commits] [clang] release/18.x [X86_64] fix SSE type error in vaarg (PR #86698)

[Aaron Ballman via llvm-branch-commits]

AaronBallman wrote:

> What are the current rules on cherry picks for old bugs? AFAICT this patch wasn't fixing a bug introduced in the 17.x-18.x development region.

https://releases.llvm.org/17.0.1/docs/HowToReleaseLLVM.html#release-patch-rules has the documented rules.

https://github.com/llvm/llvm-project/pull/86698