G'day all.
This is just a suggestion, but perhaps the problem isn't that retry isn't
inlined, it's that it isn't specialised.
IIRC, GHC does now specialise functions under what I assume would be these
conditions:
- There is a top-level case expression (possibly under some lets)
which tests a function argument.
- That function argument has a known constructor at a call site.
The situation in Neil's code is almost identical, except that the
top-level case expression is on a value passed by environment, not by
function argument.
Cheers,
Andrew Bromage
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