llvm-project

63cb3e55 - [ObjCARC] Don't sink objc_retain past atomic writes (#184113)

[ObjCARC] Don't sink objc_retain past atomic writes (#184113) The atomic may cause another thread to objc_release the pointer, so consider these instructions as potentially decrementing refcounts. This patch is a synthesis of several AI models' outputs, as well as work by David Kilzer. Co-authored-by: David Kilzer <ddkilzer@apple.com> Assisted-by: claude rdar://152185192