#2837: Vectoriser doesn't work with dph-seq
-----------------------------+----------------------------------------------
Reporter: chak | Owner: rl
Type: bug | Status: new
Priority: normal | Component: Data Parallel Haskell
Version: 6.10.1 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
-----------------------------+----------------------------------------------
Given
{{{
{-# LANGUAGE PArr, ParallelListComp #-}
{-# OPTIONS -fvectorise #-}
module DotP (dotp_double)
where
import qualified Prelude
import Data.Array.Parallel.Prelude
import Data.Array.Parallel.Prelude.Double
dotp_double :: [:Double:] -> [:Double:] -> Double
dotp_double xs ys = sumP [:x * y | x <- xs | y <- ys:]
}}}
We can compile with `dph-par`
{{{
TacticalGrace chak 12 (.../haskell/ndp): ghc -c -Odph -funbox-strict-
fields -fcpr-off -threaded -package dph-par dotp.hs
}}}
but not with `dph-seq`
{{{
TacticalGrace chak 11 (.../haskell/ndp): ghc -c -Odph -funbox-strict-
fields -fcpr-off -threaded -package dph-seq dotp.hs
*** Vectorisation error ***
Variable not vectorised:
Data.Array.Parallel.Prelude.Base.Double.sumP
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2837>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
