Your change of September 11, 1998

[Richard Kenner]

    Actually, this begs the question of why we have call_value at all?

    If we distinguished between death via set and death via clobber,
    it might matter.  Flow doesn't though.  Perhaps reorg and its
    mildly broken forward-scanning analysis cares?

Having thought about this overnight, the issue isn't *death*, but *life*.
It indicates which registers are live after the return and that is
useful information, which means we have to get it right.