M68020 and 4-byte alignment

[Alan Char]

I am interested in experiences people have had converting a UNIX system
(operating system and utilities/applications) from 2-byte aligned to
4-byte aligned, specifically, when upgrading from a 68000 environment to
a 68020 environment.  Aside from the compiler itself, what kind of source
code changes (if any) were required?  What kind of performance improvement
(if any) resulted?  How long did it take?  What kind of gotchas did you run
into?  I am involved in a project that needs to estimate the costs/benefits
tradeoffs of doing this, and would appreciate any input on the subject I
can get.

I will summarize responses if people are interested after a couple of
weeks.  Thanks.

[I have cross-posted this to comp.sys.m68k, but have limited followups
to comp.unix.wizards.]
-- 
Alan Char				"Feel free to think." --Dave Clough
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