Wed Feb 4 00:19:19 PST 2009 [email protected]
* Two small improvements to LiberateCase
Ignore-this: ca41d8d9ef1b409b32761b1a69bd1400
Max Bolingbroke suggested these two small improvements to LiberateCase
(most of the size increase is comments :-)):
a) Do LiberateCase on small functions even if they are mutually recursive
See Note [Small enough]
b) Don't do LiberateCase on functions for which it'd be fruitless,
namely when a free varible is scrutinised *outside* the function
See Note [Avoiding fruitless liberate-case]
There is virtually no effect on nofib, but Max tripped over cases
where it mattered slightly.
M ./compiler/simplCore/LiberateCase.lhs -25 +64
View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090204081919-1287e-dce1935f2fb972857e98f84e0da9ad3544e57f79.gz
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