[quote=@Majoras End]
[@Rockin Strings]

[Youtube]https://m.youtube.com/watch?v=LxTf5hjvOCU[/youtube]
[/quote]

Link's not dead in Majora's mask, as it's the Link from Ocarina of Time, but it has been officially confirmed that the Stalfos who helps the Twilight Princess Link learn powerful moves was the Link from Ocarina of time, so he definitely dies at some point. However, I've not found anything official on whether or not the events of Ocarina of Time caused that Link to become the Stalfos, though it is a widely agreed upon theory.