Kenneth Zadeck wrote:
No, I want to know if there exists a path from the current *use* of a register toyou can have def-use chains, you can have use-def chains or you can have both. It seems like what you are asking for are use-def chains,
some other *use* of the same register without going through a def.
i.e. the list of defs that can reach each use. If the set is empty, this is equiv to a reg-dead note.
Huh? If the set is empty, the use is either uninitialized or unreachable.
