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1 definition found
 for lambda lifting
From The Free On-line Dictionary of Computing (30 December 2018) :

  lambda lifting
     A program transformation to remove free variables.  An
     expression containing a free variable is replaced by a
     function applied to that variable.  E.g.
     	f x = g 3  where g y = y + x
     x is a free variable of g so it is added as an extra argument:
     	f x = g 3 x  where g y x = y + x
     Functions like this with no free variables are known as
     supercombinators and are traditionally given upper-case names
     beginning with "$".  This transformation tends to produce many
     supercombinators of the form f x = g x which can be eliminated
     by eta reduction and substitution.  Changing the order of
     the parameters may also allow more optimisations.  References
     to global (top-level) constants and functions are not
     transformed to function parameters though they are technically
     free variables.
     A closely related technique is closure conversion.  See also
     Full laziness.

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