So then tail calls should be very cheap when most of the arguments
don't change.
On Apr 10, 2007, at 10:17 , Simon Marlow wrote:
Lennart Augustsson wrote:
It's not that hard to figure out an order to permute the arguments
on the stack before a tail call that minimizes that number of
moves and temporary locations. Lmlc did this 20 years ago. :)
Right, and that's what GHC does too, with a strongly-connected-
component analysis of the dependencies between assignments of the
args for the tail call.
Cheers,
Simon
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