#7561: Unnecessary Heap Allocations - Slow Performance
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Reporter: wurmli | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.8.1
Component: Compiler | Version: 7.6.1
Keywords: | Os: Linux
Architecture: x86_64 (amd64) | Failure: Runtime performance bug
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Changes (by simonmar):
* cc: benl, rl@… (added)
* component: Build System => Compiler
* milestone: => 7.8.1
Comment:
I just reproduced it with 7.4.1: the program does appear to run many times
faster with profiling ''enabled'', which is indeed very suspicious.
I suggest that someone familiar with `vector` has a look to see which
optimisation or RULE is not happening. Roman or Ben perhaps?
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7561#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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