[GHC] #5925: Add inline version of newArray#

[GHC]

#5925: Add inline version of newArray#
---------------------------------+------------------------------------------
    Reporter:  tibbe             |       Owner:                  
        Type:  feature request   |      Status:  new             
    Priority:  normal            |   Milestone:  7.6.2           
   Component:  Compiler          |     Version:  7.4.1           
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:  4258              |    Blocking:                  
     Related:                    |  
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Comment(by tibbe):

 My use case looks something like:

 {{{
 f c = case c of
     C1 -> newArray# <known small size>
     C2 -> newArray# <unknown small size>
 }}}

 Simon M, will the unknown small size case work in the implementation you
 suggest (i.e. spot the known case and hoist its heap check to the top of
 `f`)?

 For the known case you say I should "compile those directly", but I have
 no idea what that actually means.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5925#comment:9>
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