#2132: Optimise nested comparisons
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Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: lowest | Milestone: 7.6.2
Component: Compiler | Version: 6.8.2
Resolution: | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Runtime performance bug | Difficulty: Unknown
Testcase: | Blockedby:
Blocking: | Related:
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Changes (by simonpj):
* status: closed => new
* resolution: wontfix =>
Comment:
I'm re-opening this, since it came up again in #7378. I wonder if a very
simple pass, enabled with -O2, might be worth while. No overflow magic,
just simple comparisons.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2132#comment:31>
GHC <http://www.haskell.org/ghc/>
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