#7507: loop fusion not working for Int32, Int64 as it does for Int ?
-------------------------+--------------------------------------------------
Reporter: j.waldmann | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.6.1 | Keywords:
Os: Linux | Architecture: x86_64 (amd64)
Failure: None/Unknown | Blockedby:
Blocking: | Related:
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Comment(by j.waldmann):
perhaps this is helpful: I was running ghc with -ddump-rule-firings, and
the differences are:
{{{
diff rules.Int rules.Int64
4d3
< Rule fired: SPEC Data.List.sum
13a13,15
> Rule fired: Class op fromInteger
> Rule fired: Class op fromInteger
> Rule fired: Class op fromInteger
67a70,72
> Rule fired: integerToInt
> Rule fired: integerToInt
> Rule fired: integerToInt
69,70c74
< SPEC GHC.Real.^ [GHC.Types.Int, GHC.Integer.Type.Integer]
< Rule fired: fold/build
---
> SPEC GHC.Real.^ [GHC.Int.Int64, GHC.Integer.Type.Integer]
73,75c77
< Rule fired: >#
< Rule fired: <#
< Rule fired: >#
---
> Rule fired: mapList
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7507#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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