[GHC] #14687: Investigate differences in Int-In/Outlining

19 Jan 2018

      #14687: Investigate differences in Int-In/Outlining
-------------------------------------+-------------------------------------
           Reporter:  AndreasK       |             Owner:  (none)
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.2.2
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 In one case the numbers get floated out and in the others they stay in the
 alternative.

 This results in one being compiled as a CAF while the other gets recreated
 on the heap.

 {{{
 {-# LANGUAGE MagicHash, BangPatterns, ScopedTypeVariables #-}

 import GHC.Prim
 import GHC.Exts

 func :: Int# -> Int# -> Int
 func 1# 1# = 10
 func 1# 2# = 20

 foo :: Int# -> Int# -> Int
 foo 1# 1# = 30
 foo 2# 1# = 40
 }}}

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14687
GHC http://www.haskell.org/ghc/
The Glasgow Haskell Compiler