[GHC] #8832: Constant-folding regression wrt `clearBit (bit 0) 0 `
GHC
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Thu Aug 27 12:23:45 UTC 2015
#8832: Constant-folding regression wrt `clearBit (bit 0) 0 `
-------------------------------------+-------------------------------------
Reporter: hvr | Owner: bgamari
Type: bug | Status: new
Priority: high | Milestone: 7.12.1
Component: Core Libraries | Version: 7.8.1-rc2
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: Runtime | Test Case:
performance bug | simplCore/should_compile/T8832
Blocked By: | Blocking:
Related Tickets: | Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by bgamari):
* owner: ekmett => bgamari
Comment:
I discussed this with Simon during out GHC meeting and we agreed that the
best solution here would be to add a `PrelRule` covering `bit`.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8832#comment:27>
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