[GHC] #16036: expDouble## 0.0## doesn't get complied into 1.0##

[GHC]

#16036: expDouble## 0.0## doesn't get complied into 1.0##
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        Reporter:  Fuuzetsu          |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Fuuzetsu):

 In LLVM source I see

 {{{
        case 'e':
          if ((Name == "exp" && TLI->has(LibFunc_exp)) ||
              (Name == "expf" && TLI->has(LibFunc_expf)) ||
              (Name == "__exp_finite" && TLI->has(LibFunc_exp_finite)) ||
              (Name == "__expf_finite" && TLI->has(LibFunc_expf_finite)))
   return ConstantFoldFP(exp, V, Ty);
 }}}

 So maybe it's fine?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16036#comment:2>
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