[GHC] #10148: Optimization causes repeated computation
GHC
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Mon Mar 9 22:15:46 UTC 2015
#10148: Optimization causes repeated computation
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Reporter: akio | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.10.1-rc1
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
Type of failure: Runtime | Unknown/Multiple
performance bug | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Revisions:
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Comment (by nomeata):
It must be related to the `error` call in `adjustA`. Removing the branch,
or replacing it by something terminating, even replacing it by `undefined`
makes the bug disappear.
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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10148#comment:4>
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