#5970: Type checker hangs
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Reporter: Lemming | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler (Type checker) | Version: 7.4.1
Keywords: | Os: Linux
Architecture: x86 | Failure: Compile-time
performance bug
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Changes (by simonpj):
* cc: dimitris@… (added)
* difficulty: => Unknown
Comment:
I already observed that repeating a function definition n times does not
multiply the type checking by n but it needs considerably more time. I
think this can be considered a bug.
Can you give a reproducible test case for that? Will also try to look at
your full example, but the cut-down versions are MUCH MUCH easier to deal
with. As it happens Dimitrios and I are back to looking at the
constraint solver at the moment, so the timing is good. In general, if
you can isolate any places where performance is unexpectedly non-linear,
we'd love to know. Thanks.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5970#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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