Your Jan 8th, 2001 rtlanal.c:note_stores change

[Richard Kenner]

    > Let me rephrase: we need a mechanism to say "this register is being set
    > to something that's too complicated to describe".

    Isn't that what

    (set (...) (unspec ...))

    means?

Interesting idea.  There's the issue that an UNSPEC has an index, but that's
probably not a major problem.