#5505: Program runs faster with profiling than without
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Reporter: simonpj | Owner: simonmar
Type: bug | Status: new
Priority: high | Milestone: 7.4.1
Component: Compiler | Version: 7.0.3
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by simonmar):
Replying to [comment:7 bgamari]:
> Interestingly enough, adding some SPECIALIZE pragmas to a few hotspots
(commit b08b2b3680548f47c71a90db20d8b1310392fec9) seems to fix this
behavior (runtime of 10s with profiling, 5s without).
I strongly suspect your bug is different to the original one reported in
this ticket. Could you open a new ticket please? Also, I looked at your
example, but it has rather a lot of dependencies (cairo, attoparsec,
vector-spaces etc.) and not all of them work with GHC HEAD. Is it
possible to make a more self-contained test case?
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5505#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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