#7436: Derived Foldable and Traversable instances become extremely inefficient
due
to eta-expansion
---------------------------------+------------------------------------------
Reporter: shachaf | Owner:
Type: bug | Status: patch
Priority: normal | Milestone:
Component: Compiler | Version: 7.6.1
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: Runtime performance bug
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by simonpj):
Yes, I think it'd be very helpful to add a `Note [Avoid eta-expanded
code]`, explaining the problem, giving an example, and pointing to this
ticket.
Thank you.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7436#comment:13>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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