Move tests from tests/ghc-regress/* to just tests/*

50 files changed, 3256 insertions, 0 deletions

diff --git a/testsuite/tests/dph/Makefile b/testsuite/tests/dph/Makefile
new file mode 100644
index 0000000000..9a36a1c5fe
--- /dev/null
+++ b/testsuite/tests/dph/Makefile
@@ -0,0 +1,3 @@
+TOP=../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/diophantine/DiophantineVect.hs b/testsuite/tests/dph/diophantine/DiophantineVect.hs
new file mode 100644
index 0000000000..bef6694b3d
--- /dev/null
+++ b/testsuite/tests/dph/diophantine/DiophantineVect.hs
@@ -0,0 +1,38 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise -XParallelListComp #-}
+module DiophantineVect (solution3) where
+
+import Data.Array.Parallel
+import Data.Array.Parallel.Prelude.Int
+
+import qualified Prelude as P
+
+solution3'
+ = let
+     pow x i     = productP (replicateP i x)
+     primes      = [: 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73 :]
+     sumpri xx   = productP [: pow p x | p <- primes | x <- xx :]
+     distinct xx = productP [: x + 1   | x <- xx :]
+     
+     series :: [:Int:] -> Int -> [:[:Int:]:]
+     series xs n     
+       | n == 1      = [: [: 0 :] :]
+       | otherwise   = [: [: x :] +:+ ps 
+                             | x <- xs
+                             , ps <- series (enumFromToP 0 x) (n-1) :]
+     
+     prob x y        
+      = let  xx      = [: (sumpri m ,m) 
+                             | m <- series (enumFromToP 1 3) x
+                             , distinct [: x * 2 | x <- m :] > y :]          
+             i       = minIndexP [: a | (a, b) <- xx :]
+        in   xx !: i 
+   in
+   prob 7 2000
+
+solution3 :: (Int, PArray Int)
+{-# NOINLINE solution3 #-}
+solution3
+  = let (i, is) = solution3'
+    in
+    (i, toPArrayP is)
diff --git a/testsuite/tests/dph/diophantine/Main.hs b/testsuite/tests/dph/diophantine/Main.hs
new file mode 100644
index 0000000000..eb8ae7ac28
--- /dev/null
+++ b/testsuite/tests/dph/diophantine/Main.hs
@@ -0,0 +1,43 @@
+{-# LANGUAGE ParallelArrays #-}
+
+import Data.List
+import DiophantineVect
+
+import qualified Data.Array.Parallel.PArray   as P
+import Data.Array.Parallel.Prelude
+
+
+-- Solution for the 108th Euler problem.
+-- From the Haskell Wiki
+solution1
+ = let	primes 		= [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73]
+	series _ 1 	= [[0]]
+	series xs n 	= [x:ps | x <- xs, ps <- series [0..x] (n-1) ]
+	distinct	= product . map (+1)
+	sumpri x 	= product $ zipWith (^) primes x
+
+	prob x y 	= minimum [ (sumpri m ,m) 
+				| m <- series [1..3] x
+				, (>y) $ distinct $ map (*2) m]
+   in	prob 7 2000
+
+solution2
+ = let	primes 		= [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73]
+	series _ 1 	= [[0]]
+	series xs n 	= [x:ps | x <- xs, ps <- series [0..x] (n-1) ]
+	distinct xx	= product [ x + 1 | x <- xx ]
+	sumpri xx 	= product $ zipWith (^) primes xx
+
+	prob x y 	= minimum [ (sumpri m ,m) 
+					| m <- series [1..3] x
+					, (distinct $ map (*2) m) > y ]
+   in	prob 7 2000
+
+
+main 
+ = do	print solution1
+	print solution2
+	print solution3
+	
+	
+	
\ No newline at end of file
diff --git a/testsuite/tests/dph/diophantine/Makefile b/testsuite/tests/dph/diophantine/Makefile
new file mode 100644
index 0000000000..9101fbd40a
--- /dev/null
+++ b/testsuite/tests/dph/diophantine/Makefile
@@ -0,0 +1,3 @@
+TOP=../../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/diophantine/dph-diophantine-fast.stdout b/testsuite/tests/dph/diophantine/dph-diophantine-fast.stdout
new file mode 100644
index 0000000000..7088d6ced3
--- /dev/null
+++ b/testsuite/tests/dph/diophantine/dph-diophantine-fast.stdout
@@ -0,0 +1,3 @@
+(180180,[2,2,1,1,1,1,0])
+(180180,[2,2,1,1,1,1,0])
+(180180,[:2,2,1,1,1,1,0:])
diff --git a/testsuite/tests/dph/diophantine/dph-diophantine-opt.stdout b/testsuite/tests/dph/diophantine/dph-diophantine-opt.stdout
new file mode 100644
index 0000000000..7088d6ced3
--- /dev/null
+++ b/testsuite/tests/dph/diophantine/dph-diophantine-opt.stdout
@@ -0,0 +1,3 @@
+(180180,[2,2,1,1,1,1,0])
+(180180,[2,2,1,1,1,1,0])
+(180180,[:2,2,1,1,1,1,0:])
diff --git a/testsuite/tests/dph/diophantine/dph-diophantine.T b/testsuite/tests/dph/diophantine/dph-diophantine.T
new file mode 100644
index 0000000000..c963db9145
--- /dev/null
+++ b/testsuite/tests/dph/diophantine/dph-diophantine.T
@@ -0,0 +1,20 @@
+
+test    ('dph-diophantine-opt' 
+        , [ alone
+          , skip_if_fast
+          , reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-Odph -fdph-par'])
+
+test    ('dph-diophantine-fast' 
+        , [ reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , expect_broken(5065)
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-O -fno-enable-rewrite-rules -fdph-par'])
+
diff --git a/testsuite/tests/dph/dotp/DotPVect.hs b/testsuite/tests/dph/dotp/DotPVect.hs
new file mode 100644
index 0000000000..5b623017d9
--- /dev/null
+++ b/testsuite/tests/dph/dotp/DotPVect.hs
@@ -0,0 +1,15 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise #-}
+module DotPVect ( dotp ) where
+
+import Data.Array.Parallel
+import Data.Array.Parallel.Prelude.Double as D
+
+import qualified Prelude
+
+dotp :: PArray Double -> PArray Double -> Double
+{-# NOINLINE dotp #-}
+dotp v w = dotp' (fromPArrayP v) (fromPArrayP w)
+
+dotp' :: [:Double:] -> [:Double:] -> Double
+dotp' v w = D.sumP (zipWithP (*) v w)
diff --git a/testsuite/tests/dph/dotp/Main.hs b/testsuite/tests/dph/dotp/Main.hs
new file mode 100644
index 0000000000..436beb07fd
--- /dev/null
+++ b/testsuite/tests/dph/dotp/Main.hs
@@ -0,0 +1,54 @@
+import DotPVect ( dotp )
+
+import Control.Exception (evaluate)
+import System.Console.GetOpt
+import qualified System.Random as R
+
+import qualified Data.Array.Parallel.Unlifted as U
+import qualified Data.Array.Parallel.PArray   as P
+import Data.Array.Parallel.PArray (PArray)
+
+
+
+generateVectorU :: Int -> IO (U.Array Double)
+generateVectorU n =
+  do
+    let seed = 42742
+    let rg   = R.mkStdGen seed
+    let -- The std random function is too slow to generate really big vectors
+        -- with.  Instead, we generate a short random vector and repeat that.
+        randvec = U.randomRs k (-100, 100) rg
+        vec     = U.map (\i -> randvec U.!: (i `mod` k)) (U.enumFromTo 0 (n-1))
+    evaluate vec
+    return vec
+  where
+    k = 1000
+
+generateVector :: Int -> IO (PArray Double)
+generateVector n 
+  = do
+      vec <- generateVectorU n
+      return $ P.fromUArrPA' vec
+
+generateVectors :: Int -> IO (PArray Double, PArray Double)
+generateVectors n =
+  do
+    v <- generateVector n
+    w <- generateVector n
+    return (v,w)
+
+main 
+ = do	-- compute dot product with NDP
+	vectors			<- generateVectors 100000
+	let resultViaNDP	= (uncurry dotp) vectors
+
+	-- compute with lists
+	let (aVecX, aVecY) = vectors
+	let vecX		= P.toList aVecX
+	let vecY		= P.toList aVecY
+	let resultViaList	= sum $ zipWith (*) vecX vecY
+
+	-- ignore wibbles in low order bits
+	putStr $ (take 12 $ show resultViaNDP) ++ "\n"
+	putStr $ (take 12 $ show resultViaList) ++ "\n"
+	
diff --git a/testsuite/tests/dph/dotp/Makefile b/testsuite/tests/dph/dotp/Makefile
new file mode 100644
index 0000000000..9101fbd40a
--- /dev/null
+++ b/testsuite/tests/dph/dotp/Makefile
@@ -0,0 +1,3 @@
+TOP=../../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/dotp/dph-dotp-fast.stdout b/testsuite/tests/dph/dotp/dph-dotp-fast.stdout
new file mode 100644
index 0000000000..e8f012cbc6
--- /dev/null
+++ b/testsuite/tests/dph/dotp/dph-dotp-fast.stdout
@@ -0,0 +1,2 @@
+3.3659625259
+3.3659625259
diff --git a/testsuite/tests/dph/dotp/dph-dotp-opt.stdout b/testsuite/tests/dph/dotp/dph-dotp-opt.stdout
new file mode 100644
index 0000000000..e8f012cbc6
--- /dev/null
+++ b/testsuite/tests/dph/dotp/dph-dotp-opt.stdout
@@ -0,0 +1,2 @@
+3.3659625259
+3.3659625259
diff --git a/testsuite/tests/dph/dotp/dph-dotp.T b/testsuite/tests/dph/dotp/dph-dotp.T
new file mode 100644
index 0000000000..2ebab9da24
--- /dev/null
+++ b/testsuite/tests/dph/dotp/dph-dotp.T
@@ -0,0 +1,20 @@
+
+test    ('dph-dotp-opt' 
+        , [ alone
+          , skip_if_fast
+          , reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-Odph -fdph-par'])
+
+test    ('dph-dotp-fast' 
+        , [ reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-O -fno-enable-rewrite-rules -fdph-par'])
+
+
diff --git a/testsuite/tests/dph/primespj/Main.hs b/testsuite/tests/dph/primespj/Main.hs
new file mode 100644
index 0000000000..049e6a3e04
--- /dev/null
+++ b/testsuite/tests/dph/primespj/Main.hs
@@ -0,0 +1,30 @@
+import Control.Exception (evaluate)
+import System.Console.GetOpt
+
+import Data.Array.Parallel.PArray (PArray)
+import qualified Data.Array.Parallel.PArray as P
+
+import PrimesVect (primesVect)
+import Debug.Trace
+
+
+primesList :: Int -> [Int]
+primesList 1 = []
+primesList n = sps ++ [ i | i <- [sq+1..n], multiple sps i ]
+  where
+    sps = primesList sq 
+    sq  = floor $ sqrt $ fromIntegral n
+
+    multiple :: [Int] -> Int -> Bool
+    multiple ps i = and [i `mod` p /= 0 | p <- ps]
+
+
+main 
+ = do	let n			= 1000
+	let resultViaNDP	= P.toList $ primesVect n
+	let resultViaLists	= primesList n
+	
+	print resultViaNDP
+	print resultViaLists
+	print $ resultViaNDP == resultViaLists
+	
diff --git a/testsuite/tests/dph/primespj/Makefile b/testsuite/tests/dph/primespj/Makefile
new file mode 100644
index 0000000000..9101fbd40a
--- /dev/null
+++ b/testsuite/tests/dph/primespj/Makefile
@@ -0,0 +1,3 @@
+TOP=../../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/primespj/PrimesVect.hs b/testsuite/tests/dph/primespj/PrimesVect.hs
new file mode 100644
index 0000000000..34b3a568b7
--- /dev/null
+++ b/testsuite/tests/dph/primespj/PrimesVect.hs
@@ -0,0 +1,25 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise #-}
+module PrimesVect (primesVect)
+
+where
+import Data.Array.Parallel
+import Data.Array.Parallel.Prelude.Int 
+import qualified Prelude
+
+primesVect:: Int -> PArray Int
+primesVect n = toPArrayP (primesVect' n)
+
+primesVect':: Int -> [:Int:]
+primesVect' n  
+  | n == 1    = emptyP 
+  | n == 2    = singletonP 2
+  | otherwise = sps +:+ [: i | i <- enumFromToP (sq+1) n, notMultiple sps i:] 
+  where
+
+    sps = primesVect' sq
+    sq =  sqrt n
+
+    notMultiple :: [:Int:] -> Int -> Bool
+    notMultiple ps i = andP [: mod i p /= 0 | p <- ps:]
+
diff --git a/testsuite/tests/dph/primespj/dph-primespj-fast.stdout b/testsuite/tests/dph/primespj/dph-primespj-fast.stdout
new file mode 100644
index 0000000000..d935f68b11
--- /dev/null
+++ b/testsuite/tests/dph/primespj/dph-primespj-fast.stdout
@@ -0,0 +1,3 @@
+[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,541,547,557,563,569,571,577,587,593,599,601,607,613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,797,809,811,821,823,827,829,839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,983,991,997]
+[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,541,547,557,563,569,571,577,587,593,599,601,607,613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,797,809,811,821,823,827,829,839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,983,991,997]
+True
diff --git a/testsuite/tests/dph/primespj/dph-primespj-opt.stdout b/testsuite/tests/dph/primespj/dph-primespj-opt.stdout
new file mode 100644
index 0000000000..d935f68b11
--- /dev/null
+++ b/testsuite/tests/dph/primespj/dph-primespj-opt.stdout
@@ -0,0 +1,3 @@
+[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,541,547,557,563,569,571,577,587,593,599,601,607,613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,797,809,811,821,823,827,829,839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,983,991,997]
+[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,541,547,557,563,569,571,577,587,593,599,601,607,613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,797,809,811,821,823,827,829,839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,983,991,997]
+True
diff --git a/testsuite/tests/dph/primespj/dph-primespj.T b/testsuite/tests/dph/primespj/dph-primespj.T
new file mode 100644
index 0000000000..458490456b
--- /dev/null
+++ b/testsuite/tests/dph/primespj/dph-primespj.T
@@ -0,0 +1,20 @@
+
+test    ('dph-primespj-opt' 
+        , [ alone
+          , skip_if_fast
+          , reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-Odph -fdph-par'])
+
+test    ('dph-primespj-fast' 
+        , [ reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-O -fno-enable-rewrite-rules -fdph-par'])
+
+
diff --git a/testsuite/tests/dph/quickhull/Main.hs b/testsuite/tests/dph/quickhull/Main.hs
new file mode 100644
index 0000000000..ec59390850
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/Main.hs
@@ -0,0 +1,43 @@
+
+import qualified Types as QH
+import QuickHullVect (quickhull)
+
+import qualified Data.Array.Parallel.Unlifted 	    as U
+import qualified Data.Array.Parallel.Prelude 	    as P
+
+import qualified Data.Array.Parallel.PArray         as P
+import Data.Array.Parallel.PArray		    (PArray)
+
+import System.Environment
+import Data.List
+
+import SVG
+import TestData
+
+
+-----
+runQuickhull :: PArray QH.Point -> [(Double, Double)]
+runQuickhull pts 
+ = let result = quickhull pts
+       resxs  = P.toUArrPA (QH.xsOf result)
+       resys  = P.toUArrPA (QH.ysOf result)
+   in  resxs U.!: 0 `seq` (zip (U.toList resxs) (U.toList resys))
+
+
+-- Main Program ---------------------------------------------------------------
+main 
+ = do	args	<- getArgs
+	let n = case args of
+		 [s]	-> read s
+		 _	-> 1000
+
+	paInput <- toPArrayPoints 
+		$  genPointsCombo n
+	
+	let psHull  = runQuickhull paInput
+	    psInput = P.toList paInput
+	
+	putStr 
+	 $ makeSVG 
+		(roundPoints psInput)
+		(roundPoints psHull)
diff --git a/testsuite/tests/dph/quickhull/Makefile b/testsuite/tests/dph/quickhull/Makefile
new file mode 100644
index 0000000000..9101fbd40a
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/Makefile
@@ -0,0 +1,3 @@
+TOP=../../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/quickhull/QuickHullVect.hs b/testsuite/tests/dph/quickhull/QuickHullVect.hs
new file mode 100644
index 0000000000..29aaa4a823
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/QuickHullVect.hs
@@ -0,0 +1,41 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise #-}
+
+module QuickHullVect (quickhull) where
+
+import Types
+
+import Data.Array.Parallel
+import Data.Array.Parallel.Prelude.Double
+import qualified Data.Array.Parallel.Prelude.Int as Int
+
+import qualified Prelude as P
+
+distance :: Point -> Line -> Double
+distance (xo, yo) ((x1, y1), (x2, y2))
+  = (x1-xo) * (y2 - yo) - (y1 - yo) * (x2 - xo)
+
+hsplit :: [:Point:] -> Line -> [:Point:]
+hsplit points line@(p1, p2)
+  | lengthP packed Int.< 2 = singletonP p1 +:+ packed
+  | otherwise
+  = concatP [: hsplit packed ends | ends <- [:(p1, pm), (pm, p2):] :]
+  where
+    cross  = [: distance p line | p <- points :]
+    packed = [: p | (p,c) <- zipP points cross, c > 0.0 :]
+    pm     = points !: maxIndexP cross
+
+quickHull' :: [:Point:] -> [:Point:]
+quickHull' points
+  | lengthP points Int.== 0 = points
+  | otherwise
+  = concatP [: hsplit points ends | ends <- [: (minx, maxx), (maxx, minx) :] :]
+  where
+    xs   = [: x | (x, y) <- points :]
+    minx = points !: minIndexP xs
+    maxx = points !: maxIndexP xs
+
+quickhull :: PArray Point -> PArray Point
+{-# NOINLINE quickhull #-}
+quickhull ps = toPArrayP (quickHull' (fromPArrayP ps))
+
diff --git a/testsuite/tests/dph/quickhull/SVG.hs b/testsuite/tests/dph/quickhull/SVG.hs
new file mode 100644
index 0000000000..f4183a77d6
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/SVG.hs
@@ -0,0 +1,34 @@
+
+module SVG where
+
+-- Making a SVG diagram of the points and hull
+makeSVG :: [(Int, Int)] -> [(Int, Int)] -> String
+makeSVG points hull
+	= unlines
+	$  [ "<svg width=\"100%\" height=\"100%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">" ]
+	++ [svgPolygon hull]
+	++ map svgPoint points
+	++ map svgPointHull hull
+	++ ["</svg>"]
+
+svgPolygon  :: [(Int, Int)] -> String
+svgPolygon points
+	=  "<polygon"
+	++ " points=\"" ++ (concat [show x ++ "," ++ show y ++ " " | (x, y) <- points]) ++ "\"" 
+	++ " style=\"fill:#d0d0ff;stroke:#000000;stroke-width:1\""
+	++ "/>"
+
+svgPoint :: (Int, Int) -> String
+svgPoint (x, y)
+	= "<circle cx=\"" ++ show x ++ "\" cy=\"" ++ show y ++ "\" r=\"0.5\""
+	++ " style=\"stroke:#000000\""
+	++ "/>"
+
+svgPointHull :: (Int, Int) -> String
+svgPointHull (x, y)
+	= "<circle cx=\"" ++ show x ++ "\" cy=\"" ++ show y ++ "\" r=\"1\""
+	++ " style=\"stroke:#ff0000\""
+	++ "/>"
+	
+roundPoints :: [(Double, Double)] -> [(Int, Int)]
+roundPoints ps = [(round x, round y) | (x, y) <- ps]
diff --git a/testsuite/tests/dph/quickhull/TestData.hs b/testsuite/tests/dph/quickhull/TestData.hs
new file mode 100644
index 0000000000..6317927259
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/TestData.hs
@@ -0,0 +1,92 @@
+
+module TestData 
+	( genPointsUniform
+	, genPointsDisc
+	, genPointsCombo
+	, toPArrayPoints )
+where
+
+import qualified Types as QH
+import qualified Data.Array.Parallel.Unlifted 	    as U
+import qualified Data.Array.Parallel.Prelude 	    as P
+import qualified Data.Array.Parallel.Prelude.Double as D
+import qualified Data.Array.Parallel.PArray         as P
+import Data.Array.Parallel.PArray		    (PArray)
+
+import System.Random
+import Control.Exception
+
+-- Random points generation
+-- IMPORTANT: We use the same seed with the same random generator in all
+--            quickhull codes.  The asymptotic work complexity of quickhull
+--            is between O (N) and O (N^2) depending on the input.
+--            To compare benchmark results, they always need to use the same
+--            input.
+seed 		= 42742
+
+-- | Some uniformly distributed points
+genPointsUniform 
+	:: Int			-- ^ number of points
+	-> Double		-- ^ minimum coordinate
+	-> Double		-- ^ maximum coordinate
+	-> [(Double, Double)]
+
+genPointsUniform n minXY maxXY
+ = let
+	pointMin	= 10
+	pointMax	= 510
+	gen		= mkStdGen seed
+   in	toPairs $ take (2*n) $ randomRs (pointMin, pointMax) gen
+
+toPairs []        = []
+toPairs (x:y:pts) = (x, y) : toPairs pts
+
+
+-- | Some points distributed as a disc
+genPointsDisc 
+	:: Int			-- ^ number of points
+	-> (Double, Double) 	-- ^ center of disc
+	-> Double 		-- ^ radius of disc
+	-> [(Double, Double)]
+
+genPointsDisc n (originX, originY) radiusMax
+ = let	(genRadius, genAngle)		
+		= split $ mkStdGen seed
+	
+	radius	= take n $ randomRs (0, radiusMax) genRadius 
+	angle	= take n $ randomRs (- pi, pi) genAngle
+
+	makeXY (r, a)	
+	 	= ( originX + r * cos a
+	   	  , originY + r * sin a)	
+
+   in	map makeXY $ zip radius angle	
+
+
+-- | A point cloud with areas of high an low density
+genPointsCombo 
+	:: Int 			-- ^ number of points
+	-> [(Double, Double)]	
+
+genPointsCombo n
+ 	=  genPointsDisc (n `div` 5) (250, 250) 200
+	++ genPointsDisc (n `div` 5) (100, 100) 80 
+	++ genPointsDisc (n `div` 5) (150, 300) 30 
+	++ genPointsDisc (n `div` 5) (500, 120) 30 
+	++ genPointsDisc (n `div` 5) (300, 200) 150
+
+
+-- | Convert a list of points to a PArray
+toPArrayPoints :: [(Double, Double)] -> IO (PArray QH.Point)
+toPArrayPoints ps
+ = do	let pts	= QH.points	(P.fromList (map fst ps))
+	   			(P.fromList (map snd ps))
+	evaluate $ force pts
+	return pts
+
+-- | Force points to be evaluated
+force pts 
+	= P.toUArrPA (QH.xsOf pts) U.!: 0 D.+ 
+          P.toUArrPA (QH.ysOf pts) U.!: 0
+
+   
diff --git a/testsuite/tests/dph/quickhull/Types.hs b/testsuite/tests/dph/quickhull/Types.hs
new file mode 100644
index 0000000000..162458f424
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/Types.hs
@@ -0,0 +1,32 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise #-}
+
+module Types ( Point, Line, points, xsOf, ysOf) where
+
+import Data.Array.Parallel
+
+type Point = (Double, Double)
+type Line  = (Point, Point)
+
+points' :: [:Double:] -> [:Double:] -> [:Point:]
+points' = zipP
+
+points :: PArray Double -> PArray Double -> PArray Point
+{-# NOINLINE points #-}
+points xs ys = toPArrayP (points' (fromPArrayP xs) (fromPArrayP ys))
+
+xsOf' :: [:Point:] -> [:Double:]
+xsOf' ps = [: x | (x, _) <- ps :]
+
+xsOf :: PArray Point -> PArray Double
+{-# NOINLINE xsOf #-}
+xsOf ps = toPArrayP (xsOf' (fromPArrayP ps))
+
+ysOf' :: [:Point:] -> [:Double:]
+ysOf' ps = [: y | (_, y) <- ps :]
+
+ysOf :: PArray Point -> PArray Double
+{-# NOINLINE ysOf #-}
+ysOf ps = toPArrayP (ysOf' (fromPArrayP ps))
+
+
diff --git a/testsuite/tests/dph/quickhull/dph-quickhull-fast.stdout b/testsuite/tests/dph/quickhull/dph-quickhull-fast.stdout
new file mode 100644
index 0000000000..f6b2d92e9a
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/dph-quickhull-fast.stdout
@@ -0,0 +1,1019 @@
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diff --git a/testsuite/tests/dph/quickhull/dph-quickhull.T b/testsuite/tests/dph/quickhull/dph-quickhull.T
new file mode 100644
index 0000000000..f1a1debe3f
--- /dev/null
+++ b/testsuite/tests/dph/quickhull/dph-quickhull.T
@@ -0,0 +1,20 @@
+
+test    ('dph-quickhull-opt' 
+        , [ alone
+          , skip_if_fast
+          , reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-Odph -funfolding-use-threshold30 -fdph-par'])
+
+test    ('dph-quickhull-fast' 
+        , [ reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-O -fno-enable-rewrite-rules -fdph-par'])
+
+
diff --git a/testsuite/tests/dph/smvm/Main.hs b/testsuite/tests/dph/smvm/Main.hs
new file mode 100644
index 0000000000..e30938bc21
--- /dev/null
+++ b/testsuite/tests/dph/smvm/Main.hs
@@ -0,0 +1,65 @@
+{-# LANGUAGE TypeOperators #-}
+
+import SMVMVect (smvm)
+
+import Control.Exception (evaluate)
+import System.IO
+import System.Environment
+
+import qualified Data.Array.Parallel.Unlifted as U
+import Data.Array.Parallel.Prelude
+import Data.Array.Parallel.PArray as P
+
+
+-- Load sparse matrix from a file
+loadSM 	:: String 
+	-> IO (PArray (PArray (Int, Double)), PArray Double)
+
+loadSM s 
+  = do
+      (segd, m, v) <- loadSM' s
+      return $ (nestUSegdPA' segd (fromUArrPA_2' m), fromUArrPA' v)
+
+
+loadSM' :: String 
+	-> IO	( U.Segd
+		, U.Array (Int, Double)
+		, U.Array Double)
+loadSM' fname =
+  do
+    h <- openBinaryFile fname ReadMode
+    lengths <- U.hGet h
+    indices <- U.hGet h
+    values  <- U.hGet h
+    dv      <- U.hGet h
+    let segd = U.lengthsToSegd lengths
+        m    = U.zip indices values
+    evaluate lengths
+    evaluate indices
+    evaluate values
+    evaluate dv
+    return (segd, m, dv)
+
+main 
+ = do	[inFile, outFile]	<- getArgs
+	(m, v)			<- loadSM inFile
+	let result		= smvm m v
+
+	-- ignore wibbles in low-order bits
+	let output
+		=  (unlines
+			$ map (take 12)
+			$ map show
+			$ P.toList result)
+		++ ("SUM = "
+			++ (take 12 $ show $ sum $ P.toList result)
+			++ "\n")
+
+	-- check our result against the provided outFile
+	outputCheck <- readFile outFile
+	print $	output == outputCheck
+
+
+	
+
+
diff --git a/testsuite/tests/dph/smvm/Makefile b/testsuite/tests/dph/smvm/Makefile
new file mode 100644
index 0000000000..9101fbd40a
--- /dev/null
+++ b/testsuite/tests/dph/smvm/Makefile
@@ -0,0 +1,3 @@
+TOP=../../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/smvm/SMVMVect.hs b/testsuite/tests/dph/smvm/SMVMVect.hs
new file mode 100644
index 0000000000..93f3775741
--- /dev/null
+++ b/testsuite/tests/dph/smvm/SMVMVect.hs
@@ -0,0 +1,17 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise #-}
+module SMVMVect (smvm) where
+
+import Data.Array.Parallel
+import Data.Array.Parallel.Prelude.Double as D
+import Data.Array.Parallel.Prelude.Int    as I
+
+import qualified Prelude as P
+
+smvm :: PArray (PArray (Int, Double)) -> PArray Double -> PArray Double
+{-# NOINLINE smvm #-}
+smvm m v = toPArrayP (smvm' (fromNestedPArrayP m) (fromPArrayP v))
+
+smvm' :: [:[: (Int, Double) :]:] -> [:Double:] -> [:Double:]
+smvm' m v = [: D.sumP [: x D.* (v !: i) | (i,x) <- row :] | row <- m :]
+
diff --git a/testsuite/tests/dph/smvm/dph-smvm.T b/testsuite/tests/dph/smvm/dph-smvm.T
new file mode 100644
index 0000000000..d0a940a7c1
--- /dev/null
+++ b/testsuite/tests/dph/smvm/dph-smvm.T
@@ -0,0 +1,30 @@
+
+
+testFile = 'nothing'
+if config.platform.startswith('i386-'):
+        testFile  = 'test-i386.dat'
+        outFile   = 'result-i386.txt'
+
+elif config.platform.startswith('x86_64-'):
+        testFile  = 'test-x86_64.dat'
+        outFile   = 'result-x86_64.txt'
+
+elif config.platform.startswith('sparc-'):
+        testFile  = 'test-sparc.dat'
+        outFile   = 'result-sparc.txt'
+
+
+if testFile != 'nothing':
+ test   ('dph-smvm' 
+        , [ alone
+          , skip_if_fast
+          , reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) 
+          , extra_run_opts(testFile + " " + outFile)
+          ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-Odph -fdph-par'])
+
+
diff --git a/testsuite/tests/dph/smvm/dph-smvm.stdout b/testsuite/tests/dph/smvm/dph-smvm.stdout
new file mode 100644
index 0000000000..0ca95142bb
--- /dev/null
+++ b/testsuite/tests/dph/smvm/dph-smvm.stdout
@@ -0,0 +1 @@
+True
diff --git a/testsuite/tests/dph/smvm/result-i386.txt b/testsuite/tests/dph/smvm/result-i386.txt
new file mode 100644
index 0000000000..bf279482ef
--- /dev/null
+++ b/testsuite/tests/dph/smvm/result-i386.txt
@@ -0,0 +1,101 @@
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+SUM = 6054.6294998
diff --git a/testsuite/tests/dph/smvm/result-sparc.txt b/testsuite/tests/dph/smvm/result-sparc.txt
new file mode 100644
index 0000000000..8c85795cbc
--- /dev/null
+++ b/testsuite/tests/dph/smvm/result-sparc.txt
@@ -0,0 +1,101 @@
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+280.42051630
+264.68315963
+0.0
+17.241401450
+103.44167214
+120.25222269
+0.6481556022
+3.8143291874
+57.942419415
+0.9485226158
+11.722857133
+80.685346313
+497.97232376
+7.3021493591
+0.0
+4.9013220836
+61.582851534
+104.83102162
+12.196177619
+16.799924219
+8.8828491057
+20.672947720
+0.0
+8.9693097972
+66.272730332
+145.39838263
+2.6011327691
+80.289657428
+17.075494290
+0.5897431148
+26.250003553
+114.75531349
+57.010466242
+38.222004332
+5.6130133753
+120.90679901
+106.19820538
+0.0
+22.471060597
+50.616335208
+0.7352665245
+13.632854738
+72.201368578
+54.552907983
+3.2165935380
+31.048444965
+3.3117670262
+224.93467543
+110.02973746
+2.0467456318
+0.0
+7.2930317411
+8.6809940997
+41.756667327
+118.07161086
+358.47370477
+8.1013874742
+9.1189573118
+35.367265915
+10.245691446
+25.785856741
+55.679020534
+83.594437531
+34.102347192
+0.2950061972
+16.641363479
+0.0
+29.534024840
+0.0
+26.338163918
+149.17642877
+0.1698288578
+24.176530881
+57.626923103
+33.976034955
+15.977447399
+0.0
+893.79869661
+117.52170252
+60.450794548
+0.5763239875
+4.9690229931
+14.014097678
+275.53547442
+SUM = 9808.1107603
diff --git a/testsuite/tests/dph/smvm/result-x86_64.txt b/testsuite/tests/dph/smvm/result-x86_64.txt
new file mode 100644
index 0000000000..ebad60a2b0
--- /dev/null
+++ b/testsuite/tests/dph/smvm/result-x86_64.txt
@@ -0,0 +1,101 @@
+2.3160849869
+26.283679649
+76.729994661
+405.68040155
+55.723673494
+33.938026665
+26.505926115
+52.261424813
+33.397325696
+1.1328178441
+5.3697979892
+9.4419428065
+28.678826876
+61.019008268
+4.5301894841
+43.464645691
+0.0
+34.335714653
+20.798359422
+16.561984995
+17.581964787
+23.948149350
+19.120544306
+30.215710069
+0.7009196726
+51.297030554
+4.4591823094
+209.96809687
+47.289681980
+32.498492600
+13.196267290
+0.9989265108
+1.0341069617
+38.917182375
+7.9955088012
+10.355804741
+20.095073245
+36.647037472
+18.786308469
+14.370553796
+6.3265152208
+28.117268967
+65.265404040
+898.53639610
+2.1015959321
+188.65890412
+31.810545943
+14.182075117
+16.239269064
+27.309800346
+126.26472539
+32.948733352
+20.290181336
+0.0
+40.083403468
+81.626718007
+141.59574874
+8.5797914307
+37.726704414
+0.5807127190
+6.3771256902
+6.3486182511
+5.8655193980
+8.1395223932
+32.695645766
+16.964781766
+5.2863815777
+31.967858939
+21.161490986
+61.257464383
+4.1240057418
+18.099623432
+2.1851562467
+3.7220913984
+55.452918211
+10.289474473
+46.276301220
+23.201718136
+7.6338488432
+45.868472148
+12.976885901
+18.483762115
+143.50458515
+24.999794955
+12.121764180
+6.7194800847
+1.8693415211
+23.848562170
+1092.0362340
+67.588787350
+248.07913042
+0.0
+38.838570262
+13.800391661
+1277.9084108
+53.491216504
+14.325720303
+10.152650478
+17.439312837
+40.696348267
+SUM = 6837.6898296
diff --git a/testsuite/tests/dph/smvm/test-i386.dat b/testsuite/tests/dph/smvm/test-i386.dat
new file mode 100644
index 0000000000..4db8d62620
--- /dev/null
+++ b/testsuite/tests/dph/smvm/test-i386.dat
diff --git a/testsuite/tests/dph/smvm/test-sparc.dat b/testsuite/tests/dph/smvm/test-sparc.dat
new file mode 100644
index 0000000000..73d2c201cd
--- /dev/null
+++ b/testsuite/tests/dph/smvm/test-sparc.dat
diff --git a/testsuite/tests/dph/smvm/test-x86_64.dat b/testsuite/tests/dph/smvm/test-x86_64.dat
new file mode 100644
index 0000000000..08a91f5ab1
--- /dev/null
+++ b/testsuite/tests/dph/smvm/test-x86_64.dat
diff --git a/testsuite/tests/dph/sumnats/Main.hs b/testsuite/tests/dph/sumnats/Main.hs
new file mode 100644
index 0000000000..9e18e335a9
--- /dev/null
+++ b/testsuite/tests/dph/sumnats/Main.hs
@@ -0,0 +1,21 @@
+
+import SumNatsVect (sumNats)
+
+-- Solution for 1st Euler problem
+-- Add all the natural numbers below 1000 that are multiples of 3 or 5.
+
+solutionLists maxN
+ = let	sumOnetoN n = n * (n+1) `div` 2
+	sumStep s n = s * sumOnetoN (n `div` s)
+   in	sumStep 3 (maxN - 1) + sumStep 5 (maxN - 1) - sumStep 15 (maxN - 1)
+
+solutionLists2 maxN
+  = sum	[ x 	| x <- [0.. maxN - 1]
+		, (x `mod` 3 == 0) || (x `mod` 5 == 0) ]
+
+main 
+ = do	let n	= 1000
+	print $ solutionLists  n
+	print $ solutionLists2 n
+	print $ sumNats n
+	
\ No newline at end of file
diff --git a/testsuite/tests/dph/sumnats/Makefile b/testsuite/tests/dph/sumnats/Makefile
new file mode 100644
index 0000000000..9101fbd40a
--- /dev/null
+++ b/testsuite/tests/dph/sumnats/Makefile
@@ -0,0 +1,3 @@
+TOP=../../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/sumnats/SumNatsVect.hs b/testsuite/tests/dph/sumnats/SumNatsVect.hs
new file mode 100644
index 0000000000..f51f207d0c
--- /dev/null
+++ b/testsuite/tests/dph/sumnats/SumNatsVect.hs
@@ -0,0 +1,14 @@
+{-# LANGUAGE ParallelArrays #-}
+{-# OPTIONS -fvectorise #-}
+module SumNatsVect (sumNats) where
+
+import Data.Array.Parallel.Prelude
+import Data.Array.Parallel.Prelude.Int 
+
+import qualified Prelude as P
+
+sumNats :: Int -> Int
+sumNats maxN 
+	= sumP [: x 	| x <- enumFromToP 0 (maxN - 1)
+			, (x `mod` 3 == 0) || (x `mod` 5 == 0) :]
+			
diff --git a/testsuite/tests/dph/sumnats/dph-sumnats.T b/testsuite/tests/dph/sumnats/dph-sumnats.T
new file mode 100644
index 0000000000..f84757c5d7
--- /dev/null
+++ b/testsuite/tests/dph/sumnats/dph-sumnats.T
@@ -0,0 +1,10 @@
+
+test    ('dph-sumnats' 
+        , [ reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal', 'threaded1', 'threaded2']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-Odph -fdph-par'])
+
+
diff --git a/testsuite/tests/dph/sumnats/dph-sumnats.stdout b/testsuite/tests/dph/sumnats/dph-sumnats.stdout
new file mode 100644
index 0000000000..8858be2164
--- /dev/null
+++ b/testsuite/tests/dph/sumnats/dph-sumnats.stdout
@@ -0,0 +1,3 @@
+233168
+233168
+233168
diff --git a/testsuite/tests/dph/words/Main.hs b/testsuite/tests/dph/words/Main.hs
new file mode 100644
index 0000000000..bc706fb751
--- /dev/null
+++ b/testsuite/tests/dph/words/Main.hs
@@ -0,0 +1,37 @@
+
+import WordsVect
+import Data.Array.Parallel.Prelude
+import qualified Data.Array.Parallel.Prelude.Word8	as W
+import qualified Data.Array.Parallel.PArray 		as P
+import qualified Data.Array.Parallel.Unlifted		as U
+import Data.Char
+
+main 
+ = do	-- take the filename containing the words as the first arg
+	let str	=  "When   I   look  into  the   looking glass I'm always sure to see"
+		++ " no matter how I dodge         about, me looking      back at me."
+
+	-- convert string to a PArray
+	let paStr   :: PArray W.Word8
+	    paStr = fromUArrPA' $ U.map W.fromInt $ U.fromList $ map ord str
+	
+	
+	-- break the string into words then flatten it back		
+	let str' :: String
+	    str' = map chr 
+		 $ map fromIntegral
+		 $ P.toList 
+		 $ wordsOfPArray paStr
+			
+
+	-- count the number of words in the string, using the vectorised program
+	let wordCountVect = fromIntegral $ wordCountOfPArray paStr
+	
+	-- count the number of words with the ye'olde list way
+	let wordCountList = length $ words str
+	
+	-- 
+	putStr 	$  show str' ++ "\n"
+		++ "word count vect  = " ++ show wordCountVect ++ "\n"
+		++ "word count lists = " ++ show wordCountList ++ "\n"
+		
\ No newline at end of file
diff --git a/testsuite/tests/dph/words/Makefile b/testsuite/tests/dph/words/Makefile
new file mode 100644
index 0000000000..9101fbd40a
--- /dev/null
+++ b/testsuite/tests/dph/words/Makefile
@@ -0,0 +1,3 @@
+TOP=../../..
+include $(TOP)/mk/boilerplate.mk
+include $(TOP)/mk/test.mk
diff --git a/testsuite/tests/dph/words/WordsVect.hs b/testsuite/tests/dph/words/WordsVect.hs
new file mode 100644
index 0000000000..abf416e763
--- /dev/null
+++ b/testsuite/tests/dph/words/WordsVect.hs
@@ -0,0 +1,123 @@
+
+-- Break up a string into words in parallel.
+-- 	Based on the presentation "Breaking Sequential Habits of Thought", Guy Steele.
+--	http://groups.csail.mit.edu/mac/users/gjs/6.945/readings/MITApril2009Steele.pdf
+--
+-- NOTE: This is a naive implementation, and I haven't benchmarked it.
+--       Using parallel arrays in Seg probably isn't helpful for performance,
+--       but it's a stress test for the vectoriser.
+--
+--       If we actually cared about performance we wouldn't want to recursively
+--       subdivide the string right down to individual characters.
+--
+{-# LANGUAGE ParallelArrays, ParallelListComp #-}
+{-# OPTIONS -fvectorise #-}
+
+module WordsVect
+	( wordsOfPArray
+	, wordCountOfPArray )
+where
+import qualified Data.Array.Parallel.Prelude.Word8	as W
+import Data.Array.Parallel.Prelude.Word8		(Word8)
+import Data.Array.Parallel.Prelude.Int
+import Data.Array.Parallel
+
+import qualified Prelude as Prel
+
+
+-- We can't use the Prelude Char and String types in vectorised code yet..
+type Char	= Word8
+char_space	= W.fromInt 32
+
+type String	= [: Char :]
+
+
+-- | Word state
+data State
+	= Chunk	String
+	| Seg 	String 		-- initial word chunk
+		[:String:] 	-- complete words in the middle of the segment
+		String		-- final word chunk
+
+
+-- | Compose two wordstates.
+plusState :: State -> State -> State
+plusState str1 str2
+ = case (str1, str2) of
+	(Chunk as, Chunk bs)		-> Chunk (as +:+ bs)
+	(Chunk as, Seg bl bss br)	-> Seg (as +:+ bl) bss br
+	(Seg al ass ar,	Chunk bs)	-> Seg al ass (ar +:+ bs)
+	(Seg al ass ar,	Seg bl bss br)	-> Seg al (ass +:+ joinEmpty [:ar +:+ bl:] +:+ bss) br
+
+joinEmpty :: [:[:Word8:]:] -> [:[:Word8:]:]
+joinEmpty ws 
+	| lengthP ws == 1 && lengthP (ws !: 0) == 0	= [::]
+	| otherwise					= ws
+
+
+-- | Convert a single char to a wordstate.
+stateOfChar :: Char -> State
+stateOfChar c
+	| c W.== char_space	= Seg [::] [::] [::]
+	| otherwise		= Chunk [:c:]
+	
+	
+-- | Break this string into words.
+stateOfString :: String -> State
+stateOfString str
+ = let 	len	= lengthP str
+   	result
+	 | len == 0	= Chunk [::]
+	 | len == 1	= stateOfChar (str !: 0)
+	 | otherwise	
+	 =  let	half	= len `div` 2
+		s1	= sliceP 0    half       str
+		s2	= sliceP half (len-half) str
+	    in	plusState (stateOfString s1) (stateOfString s2)
+    in	result
+
+
+-- | Count the number of words in a string.
+countWordsOfState :: State -> Int
+countWordsOfState state
+ = case state of
+	Chunk c		-> wordsInChunkArr c
+	Seg c1 ws c2 	-> wordsInChunkArr c1 + lengthP ws + wordsInChunkArr c2
+	
+wordsInChunkArr :: [:Word8:] -> Int
+wordsInChunkArr arr
+	| lengthP arr == 0	= 0
+	| otherwise		= 1
+
+
+-- | Flatten a state back to an array of Word8s,
+--	inserting spaces between the words.
+flattenState :: State -> [:Word8:]
+flattenState ss
+ = case ss of
+	Chunk s	-> s
+
+	Seg   w1 ws w2	
+		->  w1 
+		+:+ [:char_space:]
+		+:+ concatP [: w +:+ [:char_space:] | w <- ws :]
+		+:+ w2
+
+-- Interface ------------------------------------------------------------------
+
+-- | Break up an array of chars into words then flatten it back.
+wordsOfPArray :: PArray Word8 -> PArray Word8
+wordsOfPArray arr
+ = let	str	= fromPArrayP arr
+	state	= stateOfString str
+	strOut	= flattenState state
+   in	toPArrayP strOut
+
+
+-- | Count the number of words in an array
+wordCountOfPArray :: PArray Word8 -> Int
+wordCountOfPArray arr
+ = let	str	= fromPArrayP arr
+	state	= stateOfString str
+   in	countWordsOfState state
+
diff --git a/testsuite/tests/dph/words/dph-words-fast.stdout b/testsuite/tests/dph/words/dph-words-fast.stdout
new file mode 100644
index 0000000000..a7ad9be6b6
--- /dev/null
+++ b/testsuite/tests/dph/words/dph-words-fast.stdout
@@ -0,0 +1,3 @@
+"When I look into the looking glass I'm always sure to see no matter how I dodge about, me looking back at me."
+word count vect  = 23
+word count lists = 23
diff --git a/testsuite/tests/dph/words/dph-words-opt.stdout b/testsuite/tests/dph/words/dph-words-opt.stdout
new file mode 100644
index 0000000000..a7ad9be6b6
--- /dev/null
+++ b/testsuite/tests/dph/words/dph-words-opt.stdout
@@ -0,0 +1,3 @@
+"When I look into the looking glass I'm always sure to see no matter how I dodge about, me looking back at me."
+word count vect  = 23
+word count lists = 23
diff --git a/testsuite/tests/dph/words/dph-words.T b/testsuite/tests/dph/words/dph-words.T
new file mode 100644
index 0000000000..c89d01b08e
--- /dev/null
+++ b/testsuite/tests/dph/words/dph-words.T
@@ -0,0 +1,21 @@
+
+test    ('dph-words-opt' 
+        , [ alone
+          , skip_if_fast
+          , reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-Odph -fdph-par -fno-liberate-case'])
+
+
+test    ('dph-words-fast' 
+        , [ reqlib('dph-par')
+          , reqlib('dph-prim-par')
+          , only_ways(['normal']) ] 
+        , multimod_compile_and_run 
+        , [ 'Main'
+          , '-O -fno-enable-rewrite-rules -fdph-par'])
+
+