{-# LANGUAGE TypeFamilies #-}

-- | Code generation for segmented and non-segmented scans.  Uses a
-- fast single-pass algorithm, but which only works on NVIDIA GPUs and
-- with some constraints on the operator.  We use this when we can.
module Futhark.CodeGen.ImpGen.GPU.SegScan.SinglePass (compileSegScan) where

import Control.Monad
import Data.List (zip4)
import Data.Maybe
import Futhark.CodeGen.ImpCode.GPU qualified as Imp
import Futhark.CodeGen.ImpGen
import Futhark.CodeGen.ImpGen.GPU.Base
import Futhark.IR.GPUMem
import Futhark.IR.Mem.LMAD qualified as LMAD
import Futhark.Transform.Rename
import Futhark.Util (mapAccumLM, takeLast)
import Futhark.Util.IntegralExp (IntegralExp (mod, rem), divUp, quot)
import Prelude hiding (mod, quot, rem)

xParams, yParams :: SegBinOp GPUMem -> [LParam GPUMem]
xParams :: SegBinOp GPUMem -> [LParam GPUMem]
xParams SegBinOp GPUMem
scan =
  Int
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a. Int -> [a] -> [a]
take ([SubExp] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length (SegBinOp GPUMem -> [SubExp]
forall rep. SegBinOp rep -> [SubExp]
segBinOpNeutral SegBinOp GPUMem
scan)) (Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams (SegBinOp GPUMem -> Lambda GPUMem
forall rep. SegBinOp rep -> Lambda rep
segBinOpLambda SegBinOp GPUMem
scan))
yParams :: SegBinOp GPUMem -> [LParam GPUMem]
yParams SegBinOp GPUMem
scan =
  Int
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a. Int -> [a] -> [a]
drop ([SubExp] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length (SegBinOp GPUMem -> [SubExp]
forall rep. SegBinOp rep -> [SubExp]
segBinOpNeutral SegBinOp GPUMem
scan)) (Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams (SegBinOp GPUMem -> Lambda GPUMem
forall rep. SegBinOp rep -> Lambda rep
segBinOpLambda SegBinOp GPUMem
scan))

alignTo :: (IntegralExp a) => a -> a -> a
alignTo :: forall a. IntegralExp a => a -> a -> a
alignTo a
x a
a = (a
x a -> a -> a
forall a. IntegralExp a => a -> a -> a
`divUp` a
a) a -> a -> a
forall a. Num a => a -> a -> a
* a
a

createLocalArrays ::
  Count GroupSize SubExp ->
  SubExp ->
  [PrimType] ->
  InKernelGen (VName, [VName], [VName], VName, [VName])
createLocalArrays :: Count GroupSize SubExp
-> SubExp
-> [PrimType]
-> InKernelGen (VName, [VName], [VName], VName, [VName])
createLocalArrays (Count SubExp
groupSize) SubExp
m [PrimType]
types = do
  let groupSizeE :: TExp Int64
groupSizeE = SubExp -> TExp Int64
pe64 SubExp
groupSize
      workSize :: TExp Int64
workSize = SubExp -> TExp Int64
pe64 SubExp
m TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
groupSizeE
      prefixArraysSize :: TExp Int64
prefixArraysSize =
        (TExp Int64 -> TExp Int64 -> TExp Int64)
-> TExp Int64 -> [TExp Int64] -> TExp Int64
forall b a. (b -> a -> b) -> b -> [a] -> b
forall (t :: * -> *) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl (\TExp Int64
acc TExp Int64
tySize -> TExp Int64 -> TExp Int64 -> TExp Int64
forall a. IntegralExp a => a -> a -> a
alignTo TExp Int64
acc TExp Int64
tySize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
tySize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
groupSizeE) TExp Int64
0 ([TExp Int64] -> TExp Int64) -> [TExp Int64] -> TExp Int64
forall a b. (a -> b) -> a -> b
$
          (PrimType -> TExp Int64) -> [PrimType] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map PrimType -> TExp Int64
forall a. Num a => PrimType -> a
primByteSize [PrimType]
types
      maxTransposedArraySize :: TExp Int64
maxTransposedArraySize =
        (TExp Int64 -> TExp Int64 -> TExp Int64)
-> [TExp Int64] -> TExp Int64
forall a. (a -> a -> a) -> [a] -> a
forall (t :: * -> *) a. Foldable t => (a -> a -> a) -> t a -> a
foldl1 TExp Int64 -> TExp Int64 -> TExp Int64
forall v. TPrimExp Int64 v -> TPrimExp Int64 v -> TPrimExp Int64 v
sMax64 ([TExp Int64] -> TExp Int64) -> [TExp Int64] -> TExp Int64
forall a b. (a -> b) -> a -> b
$ (PrimType -> TExp Int64) -> [PrimType] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map (\PrimType
ty -> TExp Int64
workSize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* PrimType -> TExp Int64
forall a. Num a => PrimType -> a
primByteSize PrimType
ty) [PrimType]
types

      warpSize :: (Num a) => a
      warpSize :: forall a. Num a => a
warpSize = a
32
      maxWarpExchangeSize :: TExp Int64
maxWarpExchangeSize =
        (TExp Int64 -> TExp Int64 -> TExp Int64)
-> TExp Int64 -> [TExp Int64] -> TExp Int64
forall b a. (b -> a -> b) -> b -> [a] -> b
forall (t :: * -> *) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl (\TExp Int64
acc TExp Int64
tySize -> TExp Int64 -> TExp Int64 -> TExp Int64
forall a. IntegralExp a => a -> a -> a
alignTo TExp Int64
acc TExp Int64
tySize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
tySize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* Integer -> TExp Int64
forall a. Num a => Integer -> a
fromInteger Integer
forall a. Num a => a
warpSize) TExp Int64
0 ([TExp Int64] -> TExp Int64) -> [TExp Int64] -> TExp Int64
forall a b. (a -> b) -> a -> b
$
          (PrimType -> TExp Int64) -> [PrimType] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map PrimType -> TExp Int64
forall a. Num a => PrimType -> a
primByteSize [PrimType]
types
      maxLookbackSize :: TExp Int64
maxLookbackSize = TExp Int64
maxWarpExchangeSize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
forall a. Num a => a
warpSize
      size :: Count Bytes (TExp Int64)
size = TExp Int64 -> Count Bytes (TExp Int64)
forall a. a -> Count Bytes a
Imp.bytes (TExp Int64 -> Count Bytes (TExp Int64))
-> TExp Int64 -> Count Bytes (TExp Int64)
forall a b. (a -> b) -> a -> b
$ TExp Int64
maxLookbackSize TExp Int64 -> TExp Int64 -> TExp Int64
forall v. TPrimExp Int64 v -> TPrimExp Int64 v -> TPrimExp Int64 v
`sMax64` TExp Int64
prefixArraysSize TExp Int64 -> TExp Int64 -> TExp Int64
forall v. TPrimExp Int64 v -> TPrimExp Int64 v -> TPrimExp Int64 v
`sMax64` TExp Int64
maxTransposedArraySize

  (TExp Int64
_, [TExp Int64]
byteOffsets) <-
    (TExp Int64
 -> TExp Int64
 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64, TExp Int64))
-> TExp Int64
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp (TExp Int64, [TExp Int64])
forall (m :: * -> *) (t :: * -> *) acc x y.
(Monad m, Traversable t) =>
(acc -> x -> m (acc, y)) -> acc -> t x -> m (acc, t y)
mapAccumLM
      ( \TExp Int64
off TExp Int64
tySize -> do
          TExp Int64
off' <- String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"byte_offsets" (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64))
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall a b. (a -> b) -> a -> b
$ TExp Int64 -> TExp Int64 -> TExp Int64
forall a. IntegralExp a => a -> a -> a
alignTo TExp Int64
off TExp Int64
tySize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ SubExp -> TExp Int64
pe64 SubExp
groupSize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
tySize
          (TExp Int64, TExp Int64)
-> ImpM GPUMem KernelEnv KernelOp (TExp Int64, TExp Int64)
forall a. a -> ImpM GPUMem KernelEnv KernelOp a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (TExp Int64
off', TExp Int64
off)
      )
      TExp Int64
0
      ([TExp Int64]
 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64, [TExp Int64]))
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp (TExp Int64, [TExp Int64])
forall a b. (a -> b) -> a -> b
$ (PrimType -> TExp Int64) -> [PrimType] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map PrimType -> TExp Int64
forall a. Num a => PrimType -> a
primByteSize [PrimType]
types

  (TExp Int64
_, [TExp Int64]
warpByteOffsets) <-
    (TExp Int64
 -> TExp Int64
 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64, TExp Int64))
-> TExp Int64
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp (TExp Int64, [TExp Int64])
forall (m :: * -> *) (t :: * -> *) acc x y.
(Monad m, Traversable t) =>
(acc -> x -> m (acc, y)) -> acc -> t x -> m (acc, t y)
mapAccumLM
      ( \TExp Int64
off TExp Int64
tySize -> do
          TExp Int64
off' <- String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"warp_byte_offset" (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64))
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall a b. (a -> b) -> a -> b
$ TExp Int64 -> TExp Int64 -> TExp Int64
forall a. IntegralExp a => a -> a -> a
alignTo TExp Int64
off TExp Int64
tySize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
forall a. Num a => a
warpSize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
tySize
          (TExp Int64, TExp Int64)
-> ImpM GPUMem KernelEnv KernelOp (TExp Int64, TExp Int64)
forall a. a -> ImpM GPUMem KernelEnv KernelOp a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (TExp Int64
off', TExp Int64
off)
      )
      TExp Int64
forall a. Num a => a
warpSize
      ([TExp Int64]
 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64, [TExp Int64]))
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp (TExp Int64, [TExp Int64])
forall a b. (a -> b) -> a -> b
$ (PrimType -> TExp Int64) -> [PrimType] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map PrimType -> TExp Int64
forall a. Num a => PrimType -> a
primByteSize [PrimType]
types

  Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Allocate reused shared memeory" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ () -> ImpM GPUMem KernelEnv KernelOp ()
forall a. a -> ImpM GPUMem KernelEnv KernelOp a
forall (f :: * -> *) a. Applicative f => a -> f a
pure ()

  VName
localMem <- String
-> Count Bytes (TExp Int64)
-> Space
-> ImpM GPUMem KernelEnv KernelOp VName
forall rep r op.
String -> Count Bytes (TExp Int64) -> Space -> ImpM rep r op VName
sAlloc String
"local_mem" Count Bytes (TExp Int64)
size (String -> Space
Space String
"local")
  TV Int64
transposeArrayLength <- String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TV Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"trans_arr_len" TExp Int64
workSize

  VName
sharedId <- String
-> PrimType
-> ShapeBase SubExp
-> VName
-> ImpM GPUMem KernelEnv KernelOp VName
forall rep r op.
String
-> PrimType -> ShapeBase SubExp -> VName -> ImpM rep r op VName
sArrayInMem String
"shared_id" PrimType
int32 ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [Int32 -> SubExp
forall v. IsValue v => v -> SubExp
constant (Int32
1 :: Int32)]) VName
localMem

  [VName]
transposedArrays <-
    [PrimType]
-> (PrimType -> ImpM GPUMem KernelEnv KernelOp VName)
-> ImpM GPUMem KernelEnv KernelOp [VName]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM [PrimType]
types ((PrimType -> ImpM GPUMem KernelEnv KernelOp VName)
 -> ImpM GPUMem KernelEnv KernelOp [VName])
-> (PrimType -> ImpM GPUMem KernelEnv KernelOp VName)
-> ImpM GPUMem KernelEnv KernelOp [VName]
forall a b. (a -> b) -> a -> b
$ \PrimType
ty ->
      String
-> PrimType
-> ShapeBase SubExp
-> VName
-> ImpM GPUMem KernelEnv KernelOp VName
forall rep r op.
String
-> PrimType -> ShapeBase SubExp -> VName -> ImpM rep r op VName
sArrayInMem
        String
"local_transpose_arr"
        PrimType
ty
        ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [TV Int64 -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize TV Int64
transposeArrayLength])
        VName
localMem

  [VName]
prefixArrays <-
    [(TExp Int64, PrimType)]
-> ((TExp Int64, PrimType) -> ImpM GPUMem KernelEnv KernelOp VName)
-> ImpM GPUMem KernelEnv KernelOp [VName]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM ([TExp Int64] -> [PrimType] -> [(TExp Int64, PrimType)]
forall a b. [a] -> [b] -> [(a, b)]
zip [TExp Int64]
byteOffsets [PrimType]
types) (((TExp Int64, PrimType) -> ImpM GPUMem KernelEnv KernelOp VName)
 -> ImpM GPUMem KernelEnv KernelOp [VName])
-> ((TExp Int64, PrimType) -> ImpM GPUMem KernelEnv KernelOp VName)
-> ImpM GPUMem KernelEnv KernelOp [VName]
forall a b. (a -> b) -> a -> b
$ \(TExp Int64
off, PrimType
ty) -> do
      let off' :: TExp Int64
off' = TExp Int64
off TExp Int64 -> TExp Int64 -> TExp Int64
forall a. IntegralExp a => a -> a -> a
`quot` PrimType -> TExp Int64
forall a. Num a => PrimType -> a
primByteSize PrimType
ty
      String
-> PrimType
-> ShapeBase SubExp
-> VName
-> LMAD
-> ImpM GPUMem KernelEnv KernelOp VName
forall rep r op.
String
-> PrimType
-> ShapeBase SubExp
-> VName
-> LMAD
-> ImpM rep r op VName
sArray
        String
"local_prefix_arr"
        PrimType
ty
        ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [SubExp
groupSize])
        VName
localMem
        (LMAD -> ImpM GPUMem KernelEnv KernelOp VName)
-> LMAD -> ImpM GPUMem KernelEnv KernelOp VName
forall a b. (a -> b) -> a -> b
$ TExp Int64 -> [TExp Int64] -> LMAD
forall num. IntegralExp num => num -> [num] -> LMAD num
LMAD.iota TExp Int64
off' [SubExp -> TExp Int64
pe64 SubExp
groupSize]

  VName
warpscan <- String
-> PrimType
-> ShapeBase SubExp
-> VName
-> ImpM GPUMem KernelEnv KernelOp VName
forall rep r op.
String
-> PrimType -> ShapeBase SubExp -> VName -> ImpM rep r op VName
sArrayInMem String
"warpscan" PrimType
int8 ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [Int64 -> SubExp
forall v. IsValue v => v -> SubExp
constant (Int64
forall a. Num a => a
warpSize :: Int64)]) VName
localMem
  [VName]
warpExchanges <-
    [(TExp Int64, PrimType)]
-> ((TExp Int64, PrimType) -> ImpM GPUMem KernelEnv KernelOp VName)
-> ImpM GPUMem KernelEnv KernelOp [VName]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM ([TExp Int64] -> [PrimType] -> [(TExp Int64, PrimType)]
forall a b. [a] -> [b] -> [(a, b)]
zip [TExp Int64]
warpByteOffsets [PrimType]
types) (((TExp Int64, PrimType) -> ImpM GPUMem KernelEnv KernelOp VName)
 -> ImpM GPUMem KernelEnv KernelOp [VName])
-> ((TExp Int64, PrimType) -> ImpM GPUMem KernelEnv KernelOp VName)
-> ImpM GPUMem KernelEnv KernelOp [VName]
forall a b. (a -> b) -> a -> b
$ \(TExp Int64
off, PrimType
ty) -> do
      let off' :: TExp Int64
off' = TExp Int64
off TExp Int64 -> TExp Int64 -> TExp Int64
forall a. IntegralExp a => a -> a -> a
`quot` PrimType -> TExp Int64
forall a. Num a => PrimType -> a
primByteSize PrimType
ty
      String
-> PrimType
-> ShapeBase SubExp
-> VName
-> LMAD
-> ImpM GPUMem KernelEnv KernelOp VName
forall rep r op.
String
-> PrimType
-> ShapeBase SubExp
-> VName
-> LMAD
-> ImpM rep r op VName
sArray
        String
"warp_exchange"
        PrimType
ty
        ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [Int64 -> SubExp
forall v. IsValue v => v -> SubExp
constant (Int64
forall a. Num a => a
warpSize :: Int64)])
        VName
localMem
        (LMAD -> ImpM GPUMem KernelEnv KernelOp VName)
-> LMAD -> ImpM GPUMem KernelEnv KernelOp VName
forall a b. (a -> b) -> a -> b
$ TExp Int64 -> [TExp Int64] -> LMAD
forall num. IntegralExp num => num -> [num] -> LMAD num
LMAD.iota TExp Int64
off' [TExp Int64
forall a. Num a => a
warpSize]

  (VName, [VName], [VName], VName, [VName])
-> InKernelGen (VName, [VName], [VName], VName, [VName])
forall a. a -> ImpM GPUMem KernelEnv KernelOp a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (VName
sharedId, [VName]
transposedArrays, [VName]
prefixArrays, VName
warpscan, [VName]
warpExchanges)

inBlockScanLookback ::
  KernelConstants ->
  Imp.TExp Int64 ->
  VName ->
  [VName] ->
  Lambda GPUMem ->
  InKernelGen ()
inBlockScanLookback :: KernelConstants
-> TExp Int64
-> VName
-> [VName]
-> Lambda GPUMem
-> ImpM GPUMem KernelEnv KernelOp ()
inBlockScanLookback KernelConstants
constants TExp Int64
arrs_full_size VName
flag_arr [VName]
arrs Lambda GPUMem
scan_lam = ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
  TV Any
flg_x <- String -> PrimType -> ImpM GPUMem KernelEnv KernelOp (TV Any)
forall {k} rep r op (t :: k).
String -> PrimType -> ImpM rep r op (TV t)
dPrim String
"flg_x" PrimType
p_int8
  TV Int8
flg_y <- String -> PrimType -> ImpM GPUMem KernelEnv KernelOp (TV Int8)
forall {k} rep r op (t :: k).
String -> PrimType -> ImpM rep r op (TV t)
dPrim String
"flg_y" PrimType
p_int8
  let flg_param_x :: Param (MemInfo SubExp NoUniqueness MemBind)
flg_param_x = Attrs
-> VName
-> MemInfo SubExp NoUniqueness MemBind
-> Param (MemInfo SubExp NoUniqueness MemBind)
forall dec. Attrs -> VName -> dec -> Param dec
Param Attrs
forall a. Monoid a => a
mempty (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
flg_x) (PrimType -> MemInfo SubExp NoUniqueness MemBind
forall d u ret. PrimType -> MemInfo d u ret
MemPrim PrimType
p_int8)
      flg_param_y :: Param (MemInfo SubExp NoUniqueness MemBind)
flg_param_y = Attrs
-> VName
-> MemInfo SubExp NoUniqueness MemBind
-> Param (MemInfo SubExp NoUniqueness MemBind)
forall dec. Attrs -> VName -> dec -> Param dec
Param Attrs
forall a. Monoid a => a
mempty (TV Int8 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int8
flg_y) (PrimType -> MemInfo SubExp NoUniqueness MemBind
forall d u ret. PrimType -> MemInfo d u ret
MemPrim PrimType
p_int8)
      flg_y_exp :: TPrimExp Int8 VName
flg_y_exp = TV Int8 -> TPrimExp Int8 VName
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int8
flg_y
      statusP :: TPrimExp Int8 VName
statusP = (TPrimExp Int8 VName
2 :: Imp.TExp Int8)
      statusX :: TPrimExp Int8 VName
statusX = (TPrimExp Int8 VName
0 :: Imp.TExp Int8)

  [LParam GPUMem] -> ImpM GPUMem KernelEnv KernelOp ()
forall rep (inner :: * -> *) r op.
Mem rep inner =>
[LParam rep] -> ImpM rep r op ()
dLParams (Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams Lambda GPUMem
scan_lam)

  TV Int32
skip_threads <- String -> PrimType -> ImpM GPUMem KernelEnv KernelOp (TV Int32)
forall {k} rep r op (t :: k).
String -> PrimType -> ImpM rep r op (TV t)
dPrim String
"skip_threads" PrimType
int32
  let in_block_thread_active :: TPrimExp Bool VName
in_block_thread_active =
        TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
skip_threads TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<=. TExp Int32
in_block_id
      actual_params :: [LParam GPUMem]
actual_params = Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams Lambda GPUMem
scan_lam
      ([Param (MemInfo SubExp NoUniqueness MemBind)]
x_params, [Param (MemInfo SubExp NoUniqueness MemBind)]
y_params) =
        Int
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> ([Param (MemInfo SubExp NoUniqueness MemBind)],
    [Param (MemInfo SubExp NoUniqueness MemBind)])
forall a. Int -> [a] -> ([a], [a])
splitAt ([Param (MemInfo SubExp NoUniqueness MemBind)] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [LParam GPUMem]
[Param (MemInfo SubExp NoUniqueness MemBind)]
actual_params Int -> Int -> Int
forall a. Integral a => a -> a -> a
`div` Int
2) [LParam GPUMem]
[Param (MemInfo SubExp NoUniqueness MemBind)]
actual_params
      y_to_x :: ImpM GPUMem KernelEnv KernelOp ()
y_to_x =
        [(Param (MemInfo SubExp NoUniqueness MemBind),
  Param (MemInfo SubExp NoUniqueness MemBind))]
-> ((Param (MemInfo SubExp NoUniqueness MemBind),
     Param (MemInfo SubExp NoUniqueness MemBind))
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [(Param (MemInfo SubExp NoUniqueness MemBind),
     Param (MemInfo SubExp NoUniqueness MemBind))]
forall a b. [a] -> [b] -> [(a, b)]
zip [Param (MemInfo SubExp NoUniqueness MemBind)]
x_params [Param (MemInfo SubExp NoUniqueness MemBind)]
y_params) (((Param (MemInfo SubExp NoUniqueness MemBind),
   Param (MemInfo SubExp NoUniqueness MemBind))
  -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((Param (MemInfo SubExp NoUniqueness MemBind),
     Param (MemInfo SubExp NoUniqueness MemBind))
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(Param (MemInfo SubExp NoUniqueness MemBind)
x, Param (MemInfo SubExp NoUniqueness MemBind)
y) ->
          Bool
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when (TypeBase (ShapeBase SubExp) NoUniqueness -> Bool
forall shape u. TypeBase shape u -> Bool
primType (Param (MemInfo SubExp NoUniqueness MemBind)
-> TypeBase (ShapeBase SubExp) NoUniqueness
forall dec.
Typed dec =>
Param dec -> TypeBase (ShapeBase SubExp) NoUniqueness
paramType Param (MemInfo SubExp NoUniqueness MemBind)
x)) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
            VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM (Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
x) [] (VName -> SubExp
Var (Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
y)) []
      y_to_x_flg :: ImpM GPUMem KernelEnv KernelOp ()
y_to_x_flg =
        VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
flg_x) [] (VName -> SubExp
Var (TV Int8 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int8
flg_y)) []

  -- Set initial y values
  Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"read input for in-block scan" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
    (Param (MemInfo SubExp NoUniqueness MemBind)
 -> VName -> ImpM GPUMem KernelEnv KernelOp ())
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [VName]
-> ImpM GPUMem KernelEnv KernelOp ()
forall (m :: * -> *) a b c.
Applicative m =>
(a -> b -> m c) -> [a] -> [b] -> m ()
zipWithM_ Param (MemInfo SubExp NoUniqueness MemBind)
-> VName -> ImpM GPUMem KernelEnv KernelOp ()
readInitial (Param (MemInfo SubExp NoUniqueness MemBind)
flg_param_y Param (MemInfo SubExp NoUniqueness MemBind)
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a. a -> [a] -> [a]
: [Param (MemInfo SubExp NoUniqueness MemBind)]
y_params) (VName
flag_arr VName -> [VName] -> [VName]
forall a. a -> [a] -> [a]
: [VName]
arrs)
    -- Since the final result is expected to be in x_params, we may
    -- need to copy it there for the first thread in the block.
    TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TExp Int32
in_block_id TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int32
0) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      ImpM GPUMem KernelEnv KernelOp ()
y_to_x
      ImpM GPUMem KernelEnv KernelOp ()
y_to_x_flg

  Bool
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when Bool
array_scan ImpM GPUMem KernelEnv KernelOp ()
barrier

  let op_to_x :: ImpM GPUMem KernelEnv KernelOp ()
op_to_x = do
        TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf
          (TPrimExp Int8 VName
flg_y_exp TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TPrimExp Int8 VName
statusP TPrimExp Bool VName -> TPrimExp Bool VName -> TPrimExp Bool VName
forall v.
Eq v =>
TPrimExp Bool v -> TPrimExp Bool v -> TPrimExp Bool v
.||. TPrimExp Int8 VName
flg_y_exp TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TPrimExp Int8 VName
statusX)
          ( do
              ImpM GPUMem KernelEnv KernelOp ()
y_to_x_flg
              ImpM GPUMem KernelEnv KernelOp ()
y_to_x
          )
          ([Param (MemInfo SubExp NoUniqueness MemBind)]
-> Body GPUMem -> ImpM GPUMem KernelEnv KernelOp ()
forall dec rep r op. [Param dec] -> Body rep -> ImpM rep r op ()
compileBody' [Param (MemInfo SubExp NoUniqueness MemBind)]
x_params (Body GPUMem -> ImpM GPUMem KernelEnv KernelOp ())
-> Body GPUMem -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
scan_lam)

  Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"in-block scan (hopefully no barriers needed)" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
    TV Int32
skip_threads TV Int32 -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. TV t -> TExp t -> ImpM rep r op ()
<-- TExp Int32
1

    TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhile (TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
skip_threads TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<. TExp Int32
block_size) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen TPrimExp Bool VName
in_block_thread_active (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
        Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"read operands" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
          (Param (MemInfo SubExp NoUniqueness MemBind)
 -> VName -> ImpM GPUMem KernelEnv KernelOp ())
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [VName]
-> ImpM GPUMem KernelEnv KernelOp ()
forall (m :: * -> *) a b c.
Applicative m =>
(a -> b -> m c) -> [a] -> [b] -> m ()
zipWithM_
            (TExp Int64
-> Param (MemInfo SubExp NoUniqueness MemBind)
-> VName
-> ImpM GPUMem KernelEnv KernelOp ()
readParam (TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
skip_threads))
            (Param (MemInfo SubExp NoUniqueness MemBind)
flg_param_x Param (MemInfo SubExp NoUniqueness MemBind)
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a. a -> [a] -> [a]
: [Param (MemInfo SubExp NoUniqueness MemBind)]
x_params)
            (VName
flag_arr VName -> [VName] -> [VName]
forall a. a -> [a] -> [a]
: [VName]
arrs)
        Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"perform operation" ImpM GPUMem KernelEnv KernelOp ()
op_to_x

        Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"write result" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
          [ImpM GPUMem KernelEnv KernelOp ()]
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a.
(Foldable t, Monad m) =>
t (m a) -> m ()
sequence_ ([ImpM GPUMem KernelEnv KernelOp ()]
 -> ImpM GPUMem KernelEnv KernelOp ())
-> [ImpM GPUMem KernelEnv KernelOp ()]
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
            (Param (MemInfo SubExp NoUniqueness MemBind)
 -> Param (MemInfo SubExp NoUniqueness MemBind)
 -> VName
 -> ImpM GPUMem KernelEnv KernelOp ())
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [VName]
-> [ImpM GPUMem KernelEnv KernelOp ()]
forall a b c d. (a -> b -> c -> d) -> [a] -> [b] -> [c] -> [d]
zipWith3
              Param (MemInfo SubExp NoUniqueness MemBind)
-> Param (MemInfo SubExp NoUniqueness MemBind)
-> VName
-> ImpM GPUMem KernelEnv KernelOp ()
writeResult
              (Param (MemInfo SubExp NoUniqueness MemBind)
flg_param_x Param (MemInfo SubExp NoUniqueness MemBind)
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a. a -> [a] -> [a]
: [Param (MemInfo SubExp NoUniqueness MemBind)]
x_params)
              (Param (MemInfo SubExp NoUniqueness MemBind)
flg_param_y Param (MemInfo SubExp NoUniqueness MemBind)
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a. a -> [a] -> [a]
: [Param (MemInfo SubExp NoUniqueness MemBind)]
y_params)
              (VName
flag_arr VName -> [VName] -> [VName]
forall a. a -> [a] -> [a]
: [VName]
arrs)

      TV Int32
skip_threads TV Int32 -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. TV t -> TExp t -> ImpM rep r op ()
<-- TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
skip_threads TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
2
  where
    p_int8 :: PrimType
p_int8 = IntType -> PrimType
IntType IntType
Int8
    block_size :: TExp Int32
block_size = TExp Int32
32
    block_id :: TExp Int32
block_id = TExp Int32
ltid32 TExp Int32 -> TExp Int32 -> TExp Int32
forall a. IntegralExp a => a -> a -> a
`quot` TExp Int32
block_size
    in_block_id :: TExp Int32
in_block_id = TExp Int32
ltid32 TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
block_id TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
block_size
    ltid32 :: TExp Int32
ltid32 = KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants
    ltid :: TExp Int64
ltid = TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 TExp Int32
ltid32
    gtid :: TExp Int64
gtid = TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ KernelConstants -> TExp Int32
kernelGlobalThreadId KernelConstants
constants
    array_scan :: Bool
array_scan = Bool -> Bool
not (Bool -> Bool) -> Bool -> Bool
forall a b. (a -> b) -> a -> b
$ (TypeBase (ShapeBase SubExp) NoUniqueness -> Bool)
-> [TypeBase (ShapeBase SubExp) NoUniqueness] -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
all TypeBase (ShapeBase SubExp) NoUniqueness -> Bool
forall shape u. TypeBase shape u -> Bool
primType ([TypeBase (ShapeBase SubExp) NoUniqueness] -> Bool)
-> [TypeBase (ShapeBase SubExp) NoUniqueness] -> Bool
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> [TypeBase (ShapeBase SubExp) NoUniqueness]
forall rep.
Lambda rep -> [TypeBase (ShapeBase SubExp) NoUniqueness]
lambdaReturnType Lambda GPUMem
scan_lam
    barrier :: ImpM GPUMem KernelEnv KernelOp ()
barrier
      | Bool
array_scan =
          KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp (KernelOp -> ImpM GPUMem KernelEnv KernelOp ())
-> KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ Fence -> KernelOp
Imp.Barrier Fence
Imp.FenceGlobal
      | Bool
otherwise =
          KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp (KernelOp -> ImpM GPUMem KernelEnv KernelOp ())
-> KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ Fence -> KernelOp
Imp.Barrier Fence
Imp.FenceLocal

    readInitial :: Param (MemInfo SubExp NoUniqueness MemBind)
-> VName -> ImpM GPUMem KernelEnv KernelOp ()
readInitial Param (MemInfo SubExp NoUniqueness MemBind)
p VName
arr
      | TypeBase (ShapeBase SubExp) NoUniqueness -> Bool
forall shape u. TypeBase shape u -> Bool
primType (TypeBase (ShapeBase SubExp) NoUniqueness -> Bool)
-> TypeBase (ShapeBase SubExp) NoUniqueness -> Bool
forall a b. (a -> b) -> a -> b
$ Param (MemInfo SubExp NoUniqueness MemBind)
-> TypeBase (ShapeBase SubExp) NoUniqueness
forall dec.
Typed dec =>
Param dec -> TypeBase (ShapeBase SubExp) NoUniqueness
paramType Param (MemInfo SubExp NoUniqueness MemBind)
p =
          VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM (Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
p) [] (VName -> SubExp
Var VName
arr) [TExp Int64 -> DimIndex (TExp Int64)
forall d. d -> DimIndex d
DimFix TExp Int64
ltid]
      | Bool
otherwise =
          VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM (Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
p) [] (VName -> SubExp
Var VName
arr) [TExp Int64 -> DimIndex (TExp Int64)
forall d. d -> DimIndex d
DimFix TExp Int64
gtid]
    readParam :: TExp Int64
-> Param (MemInfo SubExp NoUniqueness MemBind)
-> VName
-> ImpM GPUMem KernelEnv KernelOp ()
readParam TExp Int64
behind Param (MemInfo SubExp NoUniqueness MemBind)
p VName
arr
      | TypeBase (ShapeBase SubExp) NoUniqueness -> Bool
forall shape u. TypeBase shape u -> Bool
primType (TypeBase (ShapeBase SubExp) NoUniqueness -> Bool)
-> TypeBase (ShapeBase SubExp) NoUniqueness -> Bool
forall a b. (a -> b) -> a -> b
$ Param (MemInfo SubExp NoUniqueness MemBind)
-> TypeBase (ShapeBase SubExp) NoUniqueness
forall dec.
Typed dec =>
Param dec -> TypeBase (ShapeBase SubExp) NoUniqueness
paramType Param (MemInfo SubExp NoUniqueness MemBind)
p =
          VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM (Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
p) [] (VName -> SubExp
Var VName
arr) [TExp Int64 -> DimIndex (TExp Int64)
forall d. d -> DimIndex d
DimFix (TExp Int64 -> DimIndex (TExp Int64))
-> TExp Int64 -> DimIndex (TExp Int64)
forall a b. (a -> b) -> a -> b
$ TExp Int64
ltid TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
behind]
      | Bool
otherwise =
          VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM (Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
p) [] (VName -> SubExp
Var VName
arr) [TExp Int64 -> DimIndex (TExp Int64)
forall d. d -> DimIndex d
DimFix (TExp Int64 -> DimIndex (TExp Int64))
-> TExp Int64 -> DimIndex (TExp Int64)
forall a b. (a -> b) -> a -> b
$ TExp Int64
gtid TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
behind TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
arrs_full_size]

    writeResult :: Param (MemInfo SubExp NoUniqueness MemBind)
-> Param (MemInfo SubExp NoUniqueness MemBind)
-> VName
-> ImpM GPUMem KernelEnv KernelOp ()
writeResult Param (MemInfo SubExp NoUniqueness MemBind)
x Param (MemInfo SubExp NoUniqueness MemBind)
y VName
arr
      | TypeBase (ShapeBase SubExp) NoUniqueness -> Bool
forall shape u. TypeBase shape u -> Bool
primType (TypeBase (ShapeBase SubExp) NoUniqueness -> Bool)
-> TypeBase (ShapeBase SubExp) NoUniqueness -> Bool
forall a b. (a -> b) -> a -> b
$ Param (MemInfo SubExp NoUniqueness MemBind)
-> TypeBase (ShapeBase SubExp) NoUniqueness
forall dec.
Typed dec =>
Param dec -> TypeBase (ShapeBase SubExp) NoUniqueness
paramType Param (MemInfo SubExp NoUniqueness MemBind)
x = do
          VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM VName
arr [TExp Int64 -> DimIndex (TExp Int64)
forall d. d -> DimIndex d
DimFix TExp Int64
ltid] (VName -> SubExp
Var (VName -> SubExp) -> VName -> SubExp
forall a b. (a -> b) -> a -> b
$ Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
x) []
          VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM (Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
y) [] (VName -> SubExp
Var (VName -> SubExp) -> VName -> SubExp
forall a b. (a -> b) -> a -> b
$ Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
x) []
      | Bool
otherwise =
          VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName
-> [DimIndex (TExp Int64)]
-> SubExp
-> [DimIndex (TExp Int64)]
-> ImpM rep r op ()
copyDWIM (Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
y) [] (VName -> SubExp
Var (VName -> SubExp) -> VName -> SubExp
forall a b. (a -> b) -> a -> b
$ Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName Param (MemInfo SubExp NoUniqueness MemBind)
x) []

-- | Compile 'SegScan' instance to host-level code with calls to a
-- single-pass kernel.
compileSegScan ::
  Pat LetDecMem ->
  SegLevel ->
  SegSpace ->
  SegBinOp GPUMem ->
  KernelBody GPUMem ->
  CallKernelGen ()
compileSegScan :: Pat (MemInfo SubExp NoUniqueness MemBind)
-> SegLevel
-> SegSpace
-> SegBinOp GPUMem
-> KernelBody GPUMem
-> CallKernelGen ()
compileSegScan Pat (MemInfo SubExp NoUniqueness MemBind)
pat SegLevel
lvl SegSpace
space SegBinOp GPUMem
scanOp KernelBody GPUMem
kbody = do
  KernelAttrs
attrs <- SegLevel -> CallKernelGen KernelAttrs
lvlKernelAttrs SegLevel
lvl
  let Pat [PatElem (MemInfo SubExp NoUniqueness MemBind)]
all_pes = Pat (MemInfo SubExp NoUniqueness MemBind)
pat
      scanOpNe :: [SubExp]
scanOpNe = SegBinOp GPUMem -> [SubExp]
forall rep. SegBinOp rep -> [SubExp]
segBinOpNeutral SegBinOp GPUMem
scanOp
      tys :: [PrimType]
tys = (TypeBase (ShapeBase SubExp) NoUniqueness -> PrimType)
-> [TypeBase (ShapeBase SubExp) NoUniqueness] -> [PrimType]
forall a b. (a -> b) -> [a] -> [b]
map (\(Prim PrimType
pt) -> PrimType
pt) ([TypeBase (ShapeBase SubExp) NoUniqueness] -> [PrimType])
-> [TypeBase (ShapeBase SubExp) NoUniqueness] -> [PrimType]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> [TypeBase (ShapeBase SubExp) NoUniqueness]
forall rep.
Lambda rep -> [TypeBase (ShapeBase SubExp) NoUniqueness]
lambdaReturnType (Lambda GPUMem -> [TypeBase (ShapeBase SubExp) NoUniqueness])
-> Lambda GPUMem -> [TypeBase (ShapeBase SubExp) NoUniqueness]
forall a b. (a -> b) -> a -> b
$ SegBinOp GPUMem -> Lambda GPUMem
forall rep. SegBinOp rep -> Lambda rep
segBinOpLambda SegBinOp GPUMem
scanOp
      n :: TExp Int64
n = [TExp Int64] -> TExp Int64
forall a. Num a => [a] -> a
forall (t :: * -> *) a. (Foldable t, Num a) => t a -> a
product ([TExp Int64] -> TExp Int64) -> [TExp Int64] -> TExp Int64
forall a b. (a -> b) -> a -> b
$ (SubExp -> TExp Int64) -> [SubExp] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map SubExp -> TExp Int64
pe64 ([SubExp] -> [TExp Int64]) -> [SubExp] -> [TExp Int64]
forall a b. (a -> b) -> a -> b
$ SegSpace -> [SubExp]
segSpaceDims SegSpace
space
      sumT :: Integer
      maxT :: Integer
      sumT :: Integer
sumT = (Integer -> PrimType -> Integer)
-> Integer -> [PrimType] -> Integer
forall b a. (b -> a -> b) -> b -> [a] -> b
forall (t :: * -> *) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl (\Integer
bytes PrimType
typ -> Integer
bytes Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
+ PrimType -> Integer
forall a. Num a => PrimType -> a
primByteSize PrimType
typ) Integer
0 [PrimType]
tys
      primByteSize' :: PrimType -> Integer
primByteSize' = Integer -> Integer -> Integer
forall a. Ord a => a -> a -> a
max Integer
4 (Integer -> Integer)
-> (PrimType -> Integer) -> PrimType -> Integer
forall b c a. (b -> c) -> (a -> b) -> a -> c
. PrimType -> Integer
forall a. Num a => PrimType -> a
primByteSize
      sumT' :: Integer
sumT' = (Integer -> PrimType -> Integer)
-> Integer -> [PrimType] -> Integer
forall b a. (b -> a -> b) -> b -> [a] -> b
forall (t :: * -> *) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl (\Integer
bytes PrimType
typ -> Integer
bytes Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
+ PrimType -> Integer
primByteSize' PrimType
typ) Integer
0 [PrimType]
tys Integer -> Integer -> Integer
forall a. Integral a => a -> a -> a
`div` Integer
4
      maxT :: Integer
maxT = [Integer] -> Integer
forall a. Ord a => [a] -> a
forall (t :: * -> *) a. (Foldable t, Ord a) => t a -> a
maximum ((PrimType -> Integer) -> [PrimType] -> [Integer]
forall a b. (a -> b) -> [a] -> [b]
map PrimType -> Integer
forall a. Num a => PrimType -> a
primByteSize [PrimType]
tys)
      m :: (Num a) => a
      m :: forall a. Num a => a
m = Integer -> a
forall a b. (Integral a, Num b) => a -> b
fromIntegral (Integer -> a) -> Integer -> a
forall a b. (a -> b) -> a -> b
$ Integer -> Integer -> Integer
forall a. Ord a => a -> a -> a
max Integer
1 (Integer -> Integer) -> Integer -> Integer
forall a b. (a -> b) -> a -> b
$ Integer -> Integer -> Integer
forall a. Ord a => a -> a -> a
min Integer
mem_constraint Integer
reg_constraint
      -- TODO: Make these constants dynamic by querying device
      k_reg :: Integer
k_reg = Integer
64
      k_mem :: Integer
k_mem = Integer
95
      mem_constraint :: Integer
mem_constraint = Integer -> Integer -> Integer
forall a. Ord a => a -> a -> a
max Integer
k_mem Integer
sumT Integer -> Integer -> Integer
forall a. Integral a => a -> a -> a
`div` Integer
maxT
      reg_constraint :: Integer
reg_constraint = (Integer
k_reg Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
- Integer
1 Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
- Integer
sumT') Integer -> Integer -> Integer
forall a. Integral a => a -> a -> a
`div` (Integer
2 Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
* Integer
sumT')

      group_size :: Count GroupSize SubExp
group_size = KernelAttrs -> Count GroupSize SubExp
kAttrGroupSize KernelAttrs
attrs
      group_size' :: TExp Int64
group_size' = SubExp -> TExp Int64
pe64 (SubExp -> TExp Int64) -> SubExp -> TExp Int64
forall a b. (a -> b) -> a -> b
$ Count GroupSize SubExp -> SubExp
forall {k} (u :: k) e. Count u e -> e
unCount Count GroupSize SubExp
group_size

  Count NumGroups SubExp
num_groups <-
    SubExp -> Count NumGroups SubExp
forall {k} (u :: k) e. e -> Count u e
Count (SubExp -> Count NumGroups SubExp)
-> (TV Int64 -> SubExp) -> TV Int64 -> Count NumGroups SubExp
forall b c a. (b -> c) -> (a -> b) -> a -> c
. TV Int64 -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize (TV Int64 -> Count NumGroups SubExp)
-> ImpM GPUMem HostEnv HostOp (TV Int64)
-> ImpM GPUMem HostEnv HostOp (Count NumGroups SubExp)
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> String -> TExp Int64 -> ImpM GPUMem HostEnv HostOp (TV Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"num_groups" (TExp Int64
n TExp Int64 -> TExp Int64 -> TExp Int64
forall a. IntegralExp a => a -> a -> a
`divUp` (TExp Int64
group_size' TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
forall a. Num a => a
m))
  let num_groups' :: TExp Int64
num_groups' = SubExp -> TExp Int64
pe64 (Count NumGroups SubExp -> SubExp
forall {k} (u :: k) e. Count u e -> e
unCount Count NumGroups SubExp
num_groups)

  TExp Int64
num_threads <-
    String -> TExp Int64 -> ImpM GPUMem HostEnv HostOp (TExp Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"num_threads" (TExp Int64 -> ImpM GPUMem HostEnv HostOp (TExp Int64))
-> TExp Int64 -> ImpM GPUMem HostEnv HostOp (TExp Int64)
forall a b. (a -> b) -> a -> b
$ TExp Int64
num_groups' TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
group_size'

  let ([VName]
gtids, [SubExp]
dims) = [(VName, SubExp)] -> ([VName], [SubExp])
forall a b. [(a, b)] -> ([a], [b])
unzip ([(VName, SubExp)] -> ([VName], [SubExp]))
-> [(VName, SubExp)] -> ([VName], [SubExp])
forall a b. (a -> b) -> a -> b
$ SegSpace -> [(VName, SubExp)]
unSegSpace SegSpace
space
      dims' :: [TExp Int64]
dims' = (SubExp -> TExp Int64) -> [SubExp] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map SubExp -> TExp Int64
pe64 [SubExp]
dims
      segmented :: Bool
segmented = [TExp Int64] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [TExp Int64]
dims' Int -> Int -> Bool
forall a. Ord a => a -> a -> Bool
> Int
1
      not_segmented_e :: TPrimExp Bool VName
not_segmented_e = if Bool
segmented then TPrimExp Bool VName
forall v. TPrimExp Bool v
false else TPrimExp Bool VName
forall v. TPrimExp Bool v
true
      segment_size :: TExp Int64
segment_size = [TExp Int64] -> TExp Int64
forall a. HasCallStack => [a] -> a
last [TExp Int64]
dims'

      statusX, statusA, statusP :: (Num a) => a
      statusX :: forall a. Num a => a
statusX = a
0
      statusA :: forall a. Num a => a
statusA = a
1
      statusP :: forall a. Num a => a
statusP = a
2

  Code HostOp -> CallKernelGen ()
forall op rep r. Code op -> ImpM rep r op ()
emit (Code HostOp -> CallKernelGen ())
-> Code HostOp -> CallKernelGen ()
forall a b. (a -> b) -> a -> b
$ String -> Maybe Exp -> Code HostOp
forall a. String -> Maybe Exp -> Code a
Imp.DebugPrint String
"Sequential elements per thread (m) " (Maybe Exp -> Code HostOp) -> Maybe Exp -> Code HostOp
forall a b. (a -> b) -> a -> b
$ Exp -> Maybe Exp
forall a. a -> Maybe a
Just (Exp -> Maybe Exp) -> Exp -> Maybe Exp
forall a b. (a -> b) -> a -> b
$ TExp Int32 -> Exp
forall {k} (t :: k) v. TPrimExp t v -> PrimExp v
untyped (TExp Int32
forall a. Num a => a
m :: Imp.TExp Int32)
  Code HostOp -> CallKernelGen ()
forall op rep r. Code op -> ImpM rep r op ()
emit (Code HostOp -> CallKernelGen ())
-> Code HostOp -> CallKernelGen ()
forall a b. (a -> b) -> a -> b
$ String -> Maybe Exp -> Code HostOp
forall a. String -> Maybe Exp -> Code a
Imp.DebugPrint String
"Memory constraint" (Maybe Exp -> Code HostOp) -> Maybe Exp -> Code HostOp
forall a b. (a -> b) -> a -> b
$ Exp -> Maybe Exp
forall a. a -> Maybe a
Just (Exp -> Maybe Exp) -> Exp -> Maybe Exp
forall a b. (a -> b) -> a -> b
$ TExp Int32 -> Exp
forall {k} (t :: k) v. TPrimExp t v -> PrimExp v
untyped (Integer -> TExp Int32
forall a b. (Integral a, Num b) => a -> b
fromIntegral Integer
mem_constraint :: Imp.TExp Int32)
  Code HostOp -> CallKernelGen ()
forall op rep r. Code op -> ImpM rep r op ()
emit (Code HostOp -> CallKernelGen ())
-> Code HostOp -> CallKernelGen ()
forall a b. (a -> b) -> a -> b
$ String -> Maybe Exp -> Code HostOp
forall a. String -> Maybe Exp -> Code a
Imp.DebugPrint String
"Register constraint" (Maybe Exp -> Code HostOp) -> Maybe Exp -> Code HostOp
forall a b. (a -> b) -> a -> b
$ Exp -> Maybe Exp
forall a. a -> Maybe a
Just (Exp -> Maybe Exp) -> Exp -> Maybe Exp
forall a b. (a -> b) -> a -> b
$ TExp Int32 -> Exp
forall {k} (t :: k) v. TPrimExp t v -> PrimExp v
untyped (Integer -> TExp Int32
forall a b. (Integral a, Num b) => a -> b
fromIntegral Integer
reg_constraint :: Imp.TExp Int32)
  Code HostOp -> CallKernelGen ()
forall op rep r. Code op -> ImpM rep r op ()
emit (Code HostOp -> CallKernelGen ())
-> Code HostOp -> CallKernelGen ()
forall a b. (a -> b) -> a -> b
$ String -> Maybe Exp -> Code HostOp
forall a. String -> Maybe Exp -> Code a
Imp.DebugPrint String
"sumT'" (Maybe Exp -> Code HostOp) -> Maybe Exp -> Code HostOp
forall a b. (a -> b) -> a -> b
$ Exp -> Maybe Exp
forall a. a -> Maybe a
Just (Exp -> Maybe Exp) -> Exp -> Maybe Exp
forall a b. (a -> b) -> a -> b
$ TExp Int32 -> Exp
forall {k} (t :: k) v. TPrimExp t v -> PrimExp v
untyped (Integer -> TExp Int32
forall a b. (Integral a, Num b) => a -> b
fromIntegral Integer
sumT' :: Imp.TExp Int32)

  VName
globalId <- String -> Int -> CallKernelGen VName
genZeroes String
"id_counter" Int
1
  VName
statusFlags <- String
-> PrimType -> ShapeBase SubExp -> Space -> CallKernelGen VName
forall rep r op.
String
-> PrimType -> ShapeBase SubExp -> Space -> ImpM rep r op VName
sAllocArray String
"status_flags" PrimType
int8 ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [Count NumGroups SubExp -> SubExp
forall {k} (u :: k) e. Count u e -> e
unCount Count NumGroups SubExp
num_groups]) (String -> Space
Space String
"device")
  ([VName]
aggregateArrays, [VName]
incprefixArrays) <-
    ([(VName, VName)] -> ([VName], [VName]))
-> ImpM GPUMem HostEnv HostOp [(VName, VName)]
-> ImpM GPUMem HostEnv HostOp ([VName], [VName])
forall a b.
(a -> b)
-> ImpM GPUMem HostEnv HostOp a -> ImpM GPUMem HostEnv HostOp b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap [(VName, VName)] -> ([VName], [VName])
forall a b. [(a, b)] -> ([a], [b])
unzip (ImpM GPUMem HostEnv HostOp [(VName, VName)]
 -> ImpM GPUMem HostEnv HostOp ([VName], [VName]))
-> ImpM GPUMem HostEnv HostOp [(VName, VName)]
-> ImpM GPUMem HostEnv HostOp ([VName], [VName])
forall a b. (a -> b) -> a -> b
$
      [PrimType]
-> (PrimType -> ImpM GPUMem HostEnv HostOp (VName, VName))
-> ImpM GPUMem HostEnv HostOp [(VName, VName)]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM [PrimType]
tys ((PrimType -> ImpM GPUMem HostEnv HostOp (VName, VName))
 -> ImpM GPUMem HostEnv HostOp [(VName, VName)])
-> (PrimType -> ImpM GPUMem HostEnv HostOp (VName, VName))
-> ImpM GPUMem HostEnv HostOp [(VName, VName)]
forall a b. (a -> b) -> a -> b
$ \PrimType
ty ->
        (,)
          (VName -> VName -> (VName, VName))
-> CallKernelGen VName
-> ImpM GPUMem HostEnv HostOp (VName -> (VName, VName))
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> String
-> PrimType -> ShapeBase SubExp -> Space -> CallKernelGen VName
forall rep r op.
String
-> PrimType -> ShapeBase SubExp -> Space -> ImpM rep r op VName
sAllocArray String
"aggregates" PrimType
ty ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [Count NumGroups SubExp -> SubExp
forall {k} (u :: k) e. Count u e -> e
unCount Count NumGroups SubExp
num_groups]) (String -> Space
Space String
"device")
          ImpM GPUMem HostEnv HostOp (VName -> (VName, VName))
-> CallKernelGen VName -> ImpM GPUMem HostEnv HostOp (VName, VName)
forall a b.
ImpM GPUMem HostEnv HostOp (a -> b)
-> ImpM GPUMem HostEnv HostOp a -> ImpM GPUMem HostEnv HostOp b
forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
<*> String
-> PrimType -> ShapeBase SubExp -> Space -> CallKernelGen VName
forall rep r op.
String
-> PrimType -> ShapeBase SubExp -> Space -> ImpM rep r op VName
sAllocArray String
"incprefixes" PrimType
ty ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [Count NumGroups SubExp -> SubExp
forall {k} (u :: k) e. Count u e -> e
unCount Count NumGroups SubExp
num_groups]) (String -> Space
Space String
"device")

  VName -> SubExp -> CallKernelGen ()
sReplicate VName
statusFlags (SubExp -> CallKernelGen ()) -> SubExp -> CallKernelGen ()
forall a b. (a -> b) -> a -> b
$ IntType -> Integer -> SubExp
intConst IntType
Int8 Integer
forall a. Num a => a
statusX

  String
-> VName
-> KernelAttrs
-> ImpM GPUMem KernelEnv KernelOp ()
-> CallKernelGen ()
sKernelThread String
"segscan" (SegSpace -> VName
segFlat SegSpace
space) (Count NumGroups SubExp -> Count GroupSize SubExp -> KernelAttrs
defKernelAttrs Count NumGroups SubExp
num_groups Count GroupSize SubExp
group_size) (ImpM GPUMem KernelEnv KernelOp () -> CallKernelGen ())
-> ImpM GPUMem KernelEnv KernelOp () -> CallKernelGen ()
forall a b. (a -> b) -> a -> b
$ do
    KernelConstants
constants <- KernelEnv -> KernelConstants
kernelConstants (KernelEnv -> KernelConstants)
-> ImpM GPUMem KernelEnv KernelOp KernelEnv
-> ImpM GPUMem KernelEnv KernelOp KernelConstants
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> ImpM GPUMem KernelEnv KernelOp KernelEnv
forall rep r op. ImpM rep r op r
askEnv

    (VName
sharedId, [VName]
transposedArrays, [VName]
prefixArrays, VName
warpscan, [VName]
exchanges) <-
      Count GroupSize SubExp
-> SubExp
-> [PrimType]
-> InKernelGen (VName, [VName], [VName], VName, [VName])
createLocalArrays (KernelAttrs -> Count GroupSize SubExp
kAttrGroupSize KernelAttrs
attrs) (IntType -> Integer -> SubExp
intConst IntType
Int64 Integer
forall a. Num a => a
m) [PrimType]
tys

    TV Int64
dynamicId <- String -> PrimType -> ImpM GPUMem KernelEnv KernelOp (TV Int64)
forall {k} rep r op (t :: k).
String -> PrimType -> ImpM rep r op (TV t)
dPrim String
"dynamic_id" PrimType
int32
    TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int32
0) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      (VName
globalIdMem, Space
_, Count Elements (TExp Int64)
globalIdOff) <- VName
-> [TExp Int64]
-> ImpM
     GPUMem
     KernelEnv
     KernelOp
     (VName, Space, Count Elements (TExp Int64))
forall rep r op.
VName
-> [TExp Int64]
-> ImpM rep r op (VName, Space, Count Elements (TExp Int64))
fullyIndexArray VName
globalId [TExp Int64
0]
      KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp (KernelOp -> ImpM GPUMem KernelEnv KernelOp ())
-> KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
        Space -> AtomicOp -> KernelOp
Imp.Atomic Space
DefaultSpace (AtomicOp -> KernelOp) -> AtomicOp -> KernelOp
forall a b. (a -> b) -> a -> b
$
          IntType
-> VName -> VName -> Count Elements (TExp Int64) -> Exp -> AtomicOp
Imp.AtomicAdd
            IntType
Int32
            (TV Int64 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int64
dynamicId)
            VName
globalIdMem
            (TExp Int64 -> Count Elements (TExp Int64)
forall {k} (u :: k) e. e -> Count u e
Count (TExp Int64 -> Count Elements (TExp Int64))
-> TExp Int64 -> Count Elements (TExp Int64)
forall a b. (a -> b) -> a -> b
$ Count Elements (TExp Int64) -> TExp Int64
forall {k} (u :: k) e. Count u e -> e
unCount Count Elements (TExp Int64)
globalIdOff)
            (TExp Int32 -> Exp
forall {k} (t :: k) v. TPrimExp t v -> PrimExp v
untyped (TExp Int32
1 :: Imp.TExp Int32))
      VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
sharedId [TExp Int64
0] (TV Int64 -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize TV Int64
dynamicId) []

    let localBarrier :: KernelOp
localBarrier = Fence -> KernelOp
Imp.Barrier Fence
Imp.FenceLocal
        localFence :: KernelOp
localFence = Fence -> KernelOp
Imp.MemFence Fence
Imp.FenceLocal
        globalFence :: KernelOp
globalFence = Fence -> KernelOp
Imp.MemFence Fence
Imp.FenceGlobal

    KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier
    VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Int64 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int64
dynamicId) [] (VName -> SubExp
Var VName
sharedId) [TExp Int64
0]
    KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier

    TV Int64
blockOff <-
      String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TV Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"blockOff" (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TV Int64))
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TV Int64)
forall a b. (a -> b) -> a -> b
$
        TExp Int64 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId) TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
forall a. Num a => a
m TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* KernelConstants -> TExp Int64
kernelGroupSize KernelConstants
constants
    TExp Int64
sgmIdx <- String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"sgm_idx" (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64))
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall a b. (a -> b) -> a -> b
$ TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
blockOff TExp Int64 -> TExp Int64 -> TExp Int64
forall a. IntegralExp a => a -> a -> a
`mod` TExp Int64
segment_size
    TExp Int32
boundary <-
      String -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"boundary" (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32))
-> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32)
forall a b. (a -> b) -> a -> b
$
        TExp Int64 -> TExp Int32
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int32 v
sExt32 (TExp Int64 -> TExp Int32) -> TExp Int64 -> TExp Int32
forall a b. (a -> b) -> a -> b
$
          TExp Int64 -> TExp Int64 -> TExp Int64
forall v. TPrimExp Int64 v -> TPrimExp Int64 v -> TPrimExp Int64 v
sMin64 (TExp Int64
forall a. Num a => a
m TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
group_size') (TExp Int64
segment_size TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
sgmIdx)
    TExp Int32
segsize_compact <-
      String -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"segsize_compact" (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32))
-> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32)
forall a b. (a -> b) -> a -> b
$
        TExp Int64 -> TExp Int32
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int32 v
sExt32 (TExp Int64 -> TExp Int32) -> TExp Int64 -> TExp Int32
forall a b. (a -> b) -> a -> b
$
          TExp Int64 -> TExp Int64 -> TExp Int64
forall v. TPrimExp Int64 v -> TPrimExp Int64 v -> TPrimExp Int64 v
sMin64 (TExp Int64
forall a. Num a => a
m TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
group_size') TExp Int64
segment_size
    [VName]
privateArrays <-
      [PrimType]
-> (PrimType -> ImpM GPUMem KernelEnv KernelOp VName)
-> ImpM GPUMem KernelEnv KernelOp [VName]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM [PrimType]
tys ((PrimType -> ImpM GPUMem KernelEnv KernelOp VName)
 -> ImpM GPUMem KernelEnv KernelOp [VName])
-> (PrimType -> ImpM GPUMem KernelEnv KernelOp VName)
-> ImpM GPUMem KernelEnv KernelOp [VName]
forall a b. (a -> b) -> a -> b
$ \PrimType
ty ->
        String
-> PrimType
-> ShapeBase SubExp
-> Space
-> ImpM GPUMem KernelEnv KernelOp VName
forall rep r op.
String
-> PrimType -> ShapeBase SubExp -> Space -> ImpM rep r op VName
sAllocArray
          String
"private"
          PrimType
ty
          ([SubExp] -> ShapeBase SubExp
forall d. [d] -> ShapeBase d
Shape [IntType -> Integer -> SubExp
intConst IntType
Int64 Integer
forall a. Num a => a
m])
          ([SubExp] -> PrimType -> Space
ScalarSpace [IntType -> Integer -> SubExp
intConst IntType
Int64 Integer
forall a. Num a => a
m] PrimType
ty)

    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Load and map" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
      String
-> TExp Int64
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op.
String
-> TExp t -> (TExp t -> ImpM rep r op ()) -> ImpM rep r op ()
sFor String
"i" TExp Int64
forall a. Num a => a
m ((TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \TExp Int64
i -> do
        -- The map's input index
        TExp Int64
phys_tid <-
          String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"phys_tid" (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64))
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall a b. (a -> b) -> a -> b
$
            TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
blockOff
              TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants)
              TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
i TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* KernelConstants -> TExp Int64
kernelGroupSize KernelConstants
constants
        [(VName, TExp Int64)]
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
[(VName, TExp Int64)] -> TExp Int64 -> ImpM rep r op ()
dIndexSpace ([VName] -> [TExp Int64] -> [(VName, TExp Int64)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
gtids [TExp Int64]
dims') TExp Int64
phys_tid
        -- Perform the map
        let in_bounds :: ImpM GPUMem KernelEnv KernelOp ()
in_bounds =
              Names
-> Stms GPUMem
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
Names -> Stms rep -> ImpM rep r op () -> ImpM rep r op ()
compileStms Names
forall a. Monoid a => a
mempty (KernelBody GPUMem -> Stms GPUMem
forall rep. KernelBody rep -> Stms rep
kernelBodyStms KernelBody GPUMem
kbody) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
                let ([KernelResult]
all_scan_res, [KernelResult]
map_res) = Int -> [KernelResult] -> ([KernelResult], [KernelResult])
forall a. Int -> [a] -> ([a], [a])
splitAt ([SegBinOp GPUMem] -> Int
forall rep. [SegBinOp rep] -> Int
segBinOpResults [SegBinOp GPUMem
scanOp]) ([KernelResult] -> ([KernelResult], [KernelResult]))
-> [KernelResult] -> ([KernelResult], [KernelResult])
forall a b. (a -> b) -> a -> b
$ KernelBody GPUMem -> [KernelResult]
forall rep. KernelBody rep -> [KernelResult]
kernelBodyResult KernelBody GPUMem
kbody

                -- Write map results to their global memory destinations
                [(PatElem (MemInfo SubExp NoUniqueness MemBind), KernelResult)]
-> ((PatElem (MemInfo SubExp NoUniqueness MemBind), KernelResult)
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([PatElem (MemInfo SubExp NoUniqueness MemBind)]
-> [KernelResult]
-> [(PatElem (MemInfo SubExp NoUniqueness MemBind), KernelResult)]
forall a b. [a] -> [b] -> [(a, b)]
zip (Int
-> [PatElem (MemInfo SubExp NoUniqueness MemBind)]
-> [PatElem (MemInfo SubExp NoUniqueness MemBind)]
forall a. Int -> [a] -> [a]
takeLast ([KernelResult] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [KernelResult]
map_res) [PatElem (MemInfo SubExp NoUniqueness MemBind)]
all_pes) [KernelResult]
map_res) (((PatElem (MemInfo SubExp NoUniqueness MemBind), KernelResult)
  -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((PatElem (MemInfo SubExp NoUniqueness MemBind), KernelResult)
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(PatElem (MemInfo SubExp NoUniqueness MemBind)
dest, KernelResult
src) ->
                  VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (PatElem (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. PatElem dec -> VName
patElemName PatElem (MemInfo SubExp NoUniqueness MemBind)
dest) ((VName -> TExp Int64) -> [VName] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map VName -> TExp Int64
forall a. a -> TPrimExp Int64 a
Imp.le64 [VName]
gtids) (KernelResult -> SubExp
kernelResultSubExp KernelResult
src) []

                -- Write to-scan results to private memory.
                [(VName, SubExp)]
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [SubExp] -> [(VName, SubExp)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
privateArrays ([SubExp] -> [(VName, SubExp)]) -> [SubExp] -> [(VName, SubExp)]
forall a b. (a -> b) -> a -> b
$ (KernelResult -> SubExp) -> [KernelResult] -> [SubExp]
forall a b. (a -> b) -> [a] -> [b]
map KernelResult -> SubExp
kernelResultSubExp [KernelResult]
all_scan_res) (((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
dest, SubExp
src) ->
                  VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
dest [TExp Int64
i] SubExp
src []

            out_of_bounds :: ImpM GPUMem KernelEnv KernelOp ()
out_of_bounds =
              [(VName, SubExp)]
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [SubExp] -> [(VName, SubExp)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
privateArrays [SubExp]
scanOpNe) (((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
dest, SubExp
ne) ->
                VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
dest [TExp Int64
i] SubExp
ne []

        TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf (TExp Int64
phys_tid TExp Int64 -> TExp Int64 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<. TExp Int64
n) ImpM GPUMem KernelEnv KernelOp ()
in_bounds ImpM GPUMem KernelEnv KernelOp ()
out_of_bounds

    KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp (KernelOp -> ImpM GPUMem KernelEnv KernelOp ())
-> KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ Fence -> KernelOp
Imp.ErrorSync Fence
Imp.FenceLocal
    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Transpose scan inputs" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      [(VName, VName)]
-> ((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [VName] -> [(VName, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
transposedArrays [VName]
privateArrays) (((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
trans, VName
priv) -> do
        String
-> TExp Int64
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op.
String
-> TExp t -> (TExp t -> ImpM rep r op ()) -> ImpM rep r op ()
sFor String
"i" TExp Int64
forall a. Num a => a
m ((TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \TExp Int64
i -> do
          TExp Int64
sharedIdx <-
            String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"sharedIdx" (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64))
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall a b. (a -> b) -> a -> b
$
              TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants)
                TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
i TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* KernelConstants -> TExp Int64
kernelGroupSize KernelConstants
constants
          VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
trans [TExp Int64
sharedIdx] (VName -> SubExp
Var VName
priv) [TExp Int64
i]
        KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier
        String
-> TExp Int32
-> (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op.
String
-> TExp t -> (TExp t -> ImpM rep r op ()) -> ImpM rep r op ()
sFor String
"i" TExp Int32
forall a. Num a => a
m ((TExp Int32 -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \TExp Int32
i -> do
          TV Int32
sharedIdx <- String -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"sharedIdx" (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32))
-> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32)
forall a b. (a -> b) -> a -> b
$ KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
forall a. Num a => a
m TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ TExp Int32
i
          VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
priv [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 TExp Int32
i] (VName -> SubExp
Var VName
trans) [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
sharedIdx]
        KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier

    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Per thread scan" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      -- We don't need to touch the first element, so only m-1
      -- iterations here.
      TExp Int32
globalIdx <-
        String -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"gidx" (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32))
-> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32)
forall a b. (a -> b) -> a -> b
$
          (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
forall a. Num a => a
m) TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ TExp Int32
1
      String
-> TExp Int64
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op.
String
-> TExp t -> (TExp t -> ImpM rep r op ()) -> ImpM rep r op ()
sFor String
"i" (TExp Int64
forall a. Num a => a
m TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1) ((TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \TExp Int64
i -> do
        let xs :: [VName]
xs = (LParam GPUMem -> VName) -> [LParam GPUMem] -> [VName]
forall a b. (a -> b) -> [a] -> [b]
map LParam GPUMem -> VName
Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName ([LParam GPUMem] -> [VName]) -> [LParam GPUMem] -> [VName]
forall a b. (a -> b) -> a -> b
$ SegBinOp GPUMem -> [LParam GPUMem]
xParams SegBinOp GPUMem
scanOp
            ys :: [VName]
ys = (LParam GPUMem -> VName) -> [LParam GPUMem] -> [VName]
forall a b. (a -> b) -> [a] -> [b]
map LParam GPUMem -> VName
Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName ([LParam GPUMem] -> [VName]) -> [LParam GPUMem] -> [VName]
forall a b. (a -> b) -> a -> b
$ SegBinOp GPUMem -> [LParam GPUMem]
yParams SegBinOp GPUMem
scanOp
        -- determine if start of segment
        TPrimExp Bool VName
new_sgm <-
          if Bool
segmented
            then String
-> TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp (TPrimExp Bool VName)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"new_sgm" (TPrimExp Bool VName
 -> ImpM GPUMem KernelEnv KernelOp (TPrimExp Bool VName))
-> TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp (TPrimExp Bool VName)
forall a b. (a -> b) -> a -> b
$ (TExp Int32
globalIdx TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ TExp Int64 -> TExp Int32
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int32 v
sExt32 TExp Int64
i TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
boundary) TExp Int32 -> TExp Int32 -> TExp Int32
forall a. IntegralExp a => a -> a -> a
`mod` TExp Int32
segsize_compact TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int32
0
            else TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp (TPrimExp Bool VName)
forall a. a -> ImpM GPUMem KernelEnv KernelOp a
forall (f :: * -> *) a. Applicative f => a -> f a
pure TPrimExp Bool VName
forall v. TPrimExp Bool v
false
        -- skip scan of first element in segment
        TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sUnless TPrimExp Bool VName
new_sgm (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
          [(VName, (VName, VName, PrimType))]
-> ((VName, (VName, VName, PrimType))
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName]
-> [(VName, VName, PrimType)]
-> [(VName, (VName, VName, PrimType))]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
privateArrays ([(VName, VName, PrimType)] -> [(VName, (VName, VName, PrimType))])
-> [(VName, VName, PrimType)]
-> [(VName, (VName, VName, PrimType))]
forall a b. (a -> b) -> a -> b
$ [VName] -> [VName] -> [PrimType] -> [(VName, VName, PrimType)]
forall a b c. [a] -> [b] -> [c] -> [(a, b, c)]
zip3 [VName]
xs [VName]
ys [PrimType]
tys) (((VName, (VName, VName, PrimType))
  -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, (VName, VName, PrimType))
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
src, (VName
x, VName
y, PrimType
ty)) -> do
            VName -> PrimType -> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. VName -> PrimType -> ImpM rep r op ()
dPrim_ VName
x PrimType
ty
            VName -> PrimType -> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. VName -> PrimType -> ImpM rep r op ()
dPrim_ VName
y PrimType
ty
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
x [] (VName -> SubExp
Var VName
src) [TExp Int64
i]
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
y [] (VName -> SubExp
Var VName
src) [TExp Int64
i TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
1]

          Names
-> Stms GPUMem
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
Names -> Stms rep -> ImpM rep r op () -> ImpM rep r op ()
compileStms Names
forall a. Monoid a => a
mempty (Body GPUMem -> Stms GPUMem
forall rep. Body rep -> Stms rep
bodyStms (Body GPUMem -> Stms GPUMem) -> Body GPUMem -> Stms GPUMem
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody (Lambda GPUMem -> Body GPUMem) -> Lambda GPUMem -> Body GPUMem
forall a b. (a -> b) -> a -> b
$ SegBinOp GPUMem -> Lambda GPUMem
forall rep. SegBinOp rep -> Lambda rep
segBinOpLambda SegBinOp GPUMem
scanOp) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
            [(VName, SubExp)]
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [SubExp] -> [(VName, SubExp)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
privateArrays ([SubExp] -> [(VName, SubExp)]) -> [SubExp] -> [(VName, SubExp)]
forall a b. (a -> b) -> a -> b
$ (SubExpRes -> SubExp) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> [a] -> [b]
map SubExpRes -> SubExp
resSubExp ([SubExpRes] -> [SubExp]) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> a -> b
$ Body GPUMem -> [SubExpRes]
forall rep. Body rep -> [SubExpRes]
bodyResult (Body GPUMem -> [SubExpRes]) -> Body GPUMem -> [SubExpRes]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody (Lambda GPUMem -> Body GPUMem) -> Lambda GPUMem -> Body GPUMem
forall a b. (a -> b) -> a -> b
$ SegBinOp GPUMem -> Lambda GPUMem
forall rep. SegBinOp rep -> Lambda rep
segBinOpLambda SegBinOp GPUMem
scanOp) (((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
dest, SubExp
res) ->
              VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
dest [TExp Int64
i TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
1] SubExp
res []

    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Publish results in shared memory" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      [(VName, VName)]
-> ((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [VName] -> [(VName, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
prefixArrays [VName]
privateArrays) (((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
dest, VName
src) ->
        VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
dest [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants] (VName -> SubExp
Var VName
src) [TExp Int64
forall a. Num a => a
m TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1]
      KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier

    let crossesSegment :: Maybe (TExp Int32 -> TExp Int32 -> TPrimExp Bool VName)
crossesSegment = do
          Bool -> Maybe ()
forall (f :: * -> *). Alternative f => Bool -> f ()
guard Bool
segmented
          (TExp Int32 -> TExp Int32 -> TPrimExp Bool VName)
-> Maybe (TExp Int32 -> TExp Int32 -> TPrimExp Bool VName)
forall a. a -> Maybe a
Just ((TExp Int32 -> TExp Int32 -> TPrimExp Bool VName)
 -> Maybe (TExp Int32 -> TExp Int32 -> TPrimExp Bool VName))
-> (TExp Int32 -> TExp Int32 -> TPrimExp Bool VName)
-> Maybe (TExp Int32 -> TExp Int32 -> TPrimExp Bool VName)
forall a b. (a -> b) -> a -> b
$ \TExp Int32
from TExp Int32
to ->
            let from' :: TExp Int32
from' = (TExp Int32
from TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ TExp Int32
1) TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
forall a. Num a => a
m TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
1
                to' :: TExp Int32
to' = (TExp Int32
to TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ TExp Int32
1) TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
forall a. Num a => a
m TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
1
             in (TExp Int32
to' TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
from') TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.>. (TExp Int32
to' TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ TExp Int32
segsize_compact TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
boundary) TExp Int32 -> TExp Int32 -> TExp Int32
forall a. IntegralExp a => a -> a -> a
`mod` TExp Int32
segsize_compact

    Lambda GPUMem
scanOp' <- Lambda GPUMem -> ImpM GPUMem KernelEnv KernelOp (Lambda GPUMem)
forall rep (m :: * -> *).
(Renameable rep, MonadFreshNames m) =>
Lambda rep -> m (Lambda rep)
renameLambda (Lambda GPUMem -> ImpM GPUMem KernelEnv KernelOp (Lambda GPUMem))
-> Lambda GPUMem -> ImpM GPUMem KernelEnv KernelOp (Lambda GPUMem)
forall a b. (a -> b) -> a -> b
$ SegBinOp GPUMem -> Lambda GPUMem
forall rep. SegBinOp rep -> Lambda rep
segBinOpLambda SegBinOp GPUMem
scanOp

    [TV Any]
accs <- (PrimType -> ImpM GPUMem KernelEnv KernelOp (TV Any))
-> [PrimType] -> ImpM GPUMem KernelEnv KernelOp [TV Any]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
(a -> m b) -> t a -> m (t b)
forall (m :: * -> *) a b. Monad m => (a -> m b) -> [a] -> m [b]
mapM (String -> PrimType -> ImpM GPUMem KernelEnv KernelOp (TV Any)
forall {k} rep r op (t :: k).
String -> PrimType -> ImpM rep r op (TV t)
dPrim String
"acc") [PrimType]
tys
    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Scan results (with warp scan)" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      Maybe (TExp Int32 -> TExp Int32 -> TPrimExp Bool VName)
-> TExp Int64
-> TExp Int64
-> Lambda GPUMem
-> [VName]
-> ImpM GPUMem KernelEnv KernelOp ()
groupScan
        Maybe (TExp Int32 -> TExp Int32 -> TPrimExp Bool VName)
crossesSegment
        TExp Int64
num_threads
        (KernelConstants -> TExp Int64
kernelGroupSize KernelConstants
constants)
        Lambda GPUMem
scanOp'
        [VName]
prefixArrays

      KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp (KernelOp -> ImpM GPUMem KernelEnv KernelOp ())
-> KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ Fence -> KernelOp
Imp.ErrorSync Fence
Imp.FenceLocal

      let firstThread :: TV Any -> VName -> ImpM GPUMem KernelEnv KernelOp ()
firstThread TV Any
acc VName
prefixes =
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
acc) [] (VName -> SubExp
Var VName
prefixes) [TExp Int64 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (KernelConstants -> TExp Int64
kernelGroupSize KernelConstants
constants) TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1]
          notFirstThread :: TV Any -> VName -> ImpM GPUMem KernelEnv KernelOp ()
notFirstThread TV Any
acc VName
prefixes =
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
acc) [] (VName -> SubExp
Var VName
prefixes) [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants) TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1]
      TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf
        (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int32
0)
        ((TV Any -> VName -> ImpM GPUMem KernelEnv KernelOp ())
-> [TV Any] -> [VName] -> ImpM GPUMem KernelEnv KernelOp ()
forall (m :: * -> *) a b c.
Applicative m =>
(a -> b -> m c) -> [a] -> [b] -> m ()
zipWithM_ TV Any -> VName -> ImpM GPUMem KernelEnv KernelOp ()
firstThread [TV Any]
accs [VName]
prefixArrays)
        ((TV Any -> VName -> ImpM GPUMem KernelEnv KernelOp ())
-> [TV Any] -> [VName] -> ImpM GPUMem KernelEnv KernelOp ()
forall (m :: * -> *) a b c.
Applicative m =>
(a -> b -> m c) -> [a] -> [b] -> m ()
zipWithM_ TV Any -> VName -> ImpM GPUMem KernelEnv KernelOp ()
notFirstThread [TV Any]
accs [VName]
prefixArrays)

      KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier

    [TV Any]
prefixes <- [(SubExp, PrimType)]
-> ((SubExp, PrimType) -> ImpM GPUMem KernelEnv KernelOp (TV Any))
-> ImpM GPUMem KernelEnv KernelOp [TV Any]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM ([SubExp] -> [PrimType] -> [(SubExp, PrimType)]
forall a b. [a] -> [b] -> [(a, b)]
zip [SubExp]
scanOpNe [PrimType]
tys) (((SubExp, PrimType) -> ImpM GPUMem KernelEnv KernelOp (TV Any))
 -> ImpM GPUMem KernelEnv KernelOp [TV Any])
-> ((SubExp, PrimType) -> ImpM GPUMem KernelEnv KernelOp (TV Any))
-> ImpM GPUMem KernelEnv KernelOp [TV Any]
forall a b. (a -> b) -> a -> b
$ \(SubExp
ne, PrimType
ty) ->
      String -> TExp Any -> ImpM GPUMem KernelEnv KernelOp (TV Any)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"prefix" (TExp Any -> ImpM GPUMem KernelEnv KernelOp (TV Any))
-> TExp Any -> ImpM GPUMem KernelEnv KernelOp (TV Any)
forall a b. (a -> b) -> a -> b
$ Exp -> TExp Any
forall {k} (t :: k) v. PrimExp v -> TPrimExp t v
TPrimExp (Exp -> TExp Any) -> Exp -> TExp Any
forall a b. (a -> b) -> a -> b
$ PrimType -> SubExp -> Exp
forall a. ToExp a => PrimType -> a -> Exp
toExp' PrimType
ty SubExp
ne
    TPrimExp Bool VName
blockNewSgm <- String
-> TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp (TPrimExp Bool VName)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"block_new_sgm" (TPrimExp Bool VName
 -> ImpM GPUMem KernelEnv KernelOp (TPrimExp Bool VName))
-> TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp (TPrimExp Bool VName)
forall a b. (a -> b) -> a -> b
$ TExp Int64
sgmIdx TExp Int64 -> TExp Int64 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int64
0
    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Perform lookback" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TPrimExp Bool VName
blockNewSgm TPrimExp Bool VName -> TPrimExp Bool VName -> TPrimExp Bool VName
forall v.
Eq v =>
TPrimExp Bool v -> TPrimExp Bool v -> TPrimExp Bool v
.&&. KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int32
0) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
        ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
          [(TV Any, VName)]
-> ((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([TV Any] -> [VName] -> [(TV Any, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [TV Any]
accs [VName]
incprefixArrays) (((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(TV Any
acc, VName
incprefixArray) ->
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
incprefixArray [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId] (TV Any -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize TV Any
acc) []
        KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
globalFence
        ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
          VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
statusFlags [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId] (IntType -> Integer -> SubExp
intConst IntType
Int8 Integer
forall a. Num a => a
statusP) []
        [(SubExp, TV Any)]
-> ((SubExp, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([SubExp] -> [TV Any] -> [(SubExp, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [SubExp]
scanOpNe [TV Any]
accs) (((SubExp, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((SubExp, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(SubExp
ne, TV Any
acc) ->
          VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
acc) [] SubExp
ne []
      -- end sWhen

      let warpSize :: TExp Int32
warpSize = KernelConstants -> TExp Int32
kernelWaveSize KernelConstants
constants
      TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TPrimExp Bool VName -> TPrimExp Bool VName
forall v. TPrimExp Bool v -> TPrimExp Bool v
bNot TPrimExp Bool VName
blockNewSgm TPrimExp Bool VName -> TPrimExp Bool VName -> TPrimExp Bool VName
forall v.
Eq v =>
TPrimExp Bool v -> TPrimExp Bool v -> TPrimExp Bool v
.&&. KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<. TExp Int32
warpSize) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
        TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int32
0) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
          TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf
            (TPrimExp Bool VName
not_segmented_e TPrimExp Bool VName -> TPrimExp Bool VName -> TPrimExp Bool VName
forall v.
Eq v =>
TPrimExp Bool v -> TPrimExp Bool v -> TPrimExp Bool v
.||. TExp Int32
boundary TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int64 -> TExp Int32
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int32 v
sExt32 (TExp Int64
group_size' TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
forall a. Num a => a
m))
            ( do
                ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                  [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
aggregateArrays [TV Any]
accs) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
aggregateArray, TV Any
acc) ->
                    VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
aggregateArray [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId] (TV Any -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize TV Any
acc) []
                KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
globalFence
                ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                  VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
statusFlags [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId] (IntType -> Integer -> SubExp
intConst IntType
Int8 Integer
forall a. Num a => a
statusA) []
            )
            ( do
                ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                  [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
incprefixArrays [TV Any]
accs) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
incprefixArray, TV Any
acc) ->
                    VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
incprefixArray [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId] (TV Any -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize TV Any
acc) []
                KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
globalFence
                ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                  VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
statusFlags [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId] (IntType -> Integer -> SubExp
intConst IntType
Int8 Integer
forall a. Num a => a
statusP) []
            )
          ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
warpscan [TExp Int64
0] (VName -> SubExp
Var VName
statusFlags) [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1]
        -- sWhen
        KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localFence

        TV Int8
status <- String -> PrimType -> ImpM GPUMem KernelEnv KernelOp (TV Int8)
forall {k} rep r op (t :: k).
String -> PrimType -> ImpM rep r op (TV t)
dPrim String
"status" PrimType
int8 :: InKernelGen (TV Int8)
        VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Int8 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int8
status) [] (VName -> SubExp
Var VName
warpscan) [TExp Int64
0]

        TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf
          (TV Int8 -> TPrimExp Int8 VName
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int8
status TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TPrimExp Int8 VName
forall a. Num a => a
statusP)
          ( TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int32
0) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
              ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                [(TV Any, VName)]
-> ((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([TV Any] -> [VName] -> [(TV Any, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [TV Any]
prefixes [VName]
incprefixArrays) (((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(TV Any
prefix, VName
incprefixArray) ->
                  VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
prefix) [] (VName -> SubExp
Var VName
incprefixArray) [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1]
          )
          ( do
              TV Int32
readOffset <-
                String -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"readOffset" (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32))
-> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32)
forall a b. (a -> b) -> a -> b
$
                  TExp Int64 -> TExp Int32
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int32 v
sExt32 (TExp Int64 -> TExp Int32) -> TExp Int64 -> TExp Int32
forall a b. (a -> b) -> a -> b
$
                    TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (KernelConstants -> TExp Int32
kernelWaveSize KernelConstants
constants)
              let loopStop :: TExp Int32
loopStop = TExp Int32
warpSize TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* (-TExp Int32
1)
                  sameSegment :: TV Int32 -> TPrimExp Bool VName
sameSegment TV Int32
readIdx
                    | Bool
segmented =
                        let startIdx :: TExp Int64
startIdx = TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
readIdx TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ TExp Int32
1) TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* KernelConstants -> TExp Int64
kernelGroupSize KernelConstants
constants TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
forall a. Num a => a
m TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1
                         in TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
blockOff TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
startIdx TExp Int64 -> TExp Int64 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<=. TExp Int64
sgmIdx
                    | Bool
otherwise = TPrimExp Bool VName
forall v. TPrimExp Bool v
true
              TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhile (TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
readOffset TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.>. TExp Int32
loopStop) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
                TV Int32
readI <- String -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"read_i" (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32))
-> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TV Int32)
forall a b. (a -> b) -> a -> b
$ TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
readOffset TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants
                [TV Any]
aggrs <- [(SubExp, PrimType)]
-> ((SubExp, PrimType) -> ImpM GPUMem KernelEnv KernelOp (TV Any))
-> ImpM GPUMem KernelEnv KernelOp [TV Any]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM ([SubExp] -> [PrimType] -> [(SubExp, PrimType)]
forall a b. [a] -> [b] -> [(a, b)]
zip [SubExp]
scanOpNe [PrimType]
tys) (((SubExp, PrimType) -> ImpM GPUMem KernelEnv KernelOp (TV Any))
 -> ImpM GPUMem KernelEnv KernelOp [TV Any])
-> ((SubExp, PrimType) -> ImpM GPUMem KernelEnv KernelOp (TV Any))
-> ImpM GPUMem KernelEnv KernelOp [TV Any]
forall a b. (a -> b) -> a -> b
$ \(SubExp
ne, PrimType
ty) ->
                  String -> TExp Any -> ImpM GPUMem KernelEnv KernelOp (TV Any)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"aggr" (TExp Any -> ImpM GPUMem KernelEnv KernelOp (TV Any))
-> TExp Any -> ImpM GPUMem KernelEnv KernelOp (TV Any)
forall a b. (a -> b) -> a -> b
$ Exp -> TExp Any
forall {k} (t :: k) v. PrimExp v -> TPrimExp t v
TPrimExp (Exp -> TExp Any) -> Exp -> TExp Any
forall a b. (a -> b) -> a -> b
$ PrimType -> SubExp -> Exp
forall a. ToExp a => PrimType -> a -> Exp
toExp' PrimType
ty SubExp
ne
                TV Int8
flag <- String
-> TPrimExp Int8 VName -> ImpM GPUMem KernelEnv KernelOp (TV Int8)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"flag" (TPrimExp Int8 VName
forall a. Num a => a
statusX :: Imp.TExp Int8)
                ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (ImpM GPUMem KernelEnv KernelOp ()
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall b c a. (b -> c) -> (a -> b) -> a -> c
. TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
readI TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.>=. TExp Int32
0) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
                  TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf
                    (TV Int32 -> TPrimExp Bool VName
sameSegment TV Int32
readI)
                    ( do
                        VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Int8 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int8
flag) [] (VName -> SubExp
Var VName
statusFlags) [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
readI]
                        TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf
                          (TV Int8 -> TPrimExp Int8 VName
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int8
flag TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TPrimExp Int8 VName
forall a. Num a => a
statusP)
                          ( [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
incprefixArrays [TV Any]
aggrs) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
incprefix, TV Any
aggr) ->
                              VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
aggr) [] (VName -> SubExp
Var VName
incprefix) [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
readI]
                          )
                          ( TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TV Int8 -> TPrimExp Int8 VName
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int8
flag TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TPrimExp Int8 VName
forall a. Num a => a
statusA) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
                              [(TV Any, VName)]
-> ((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([TV Any] -> [VName] -> [(TV Any, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [TV Any]
aggrs [VName]
aggregateArrays) (((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(TV Any
aggr, VName
aggregate) ->
                                VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
aggr) [] (VName -> SubExp
Var VName
aggregate) [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
readI]
                          )
                    )
                    (VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Int8 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int8
flag) [] (IntType -> Integer -> SubExp
intConst IntType
Int8 Integer
forall a. Num a => a
statusP) [])
                -- end sIf
                -- end sWhen

                [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
exchanges [TV Any]
aggrs) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
exchange, TV Any
aggr) ->
                  VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
exchange [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants] (TV Any -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize TV Any
aggr) []
                VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
warpscan [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int32 -> TExp Int64) -> TExp Int32 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants] (TV Int8 -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize TV Int8
flag) []

                -- execute warp-parallel reduction but only if the last read flag in not STATUS_P
                VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Int8 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int8
flag) [] (VName -> SubExp
Var VName
warpscan) [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 TExp Int32
warpSize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1]
                TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TV Int8 -> TPrimExp Int8 VName
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int8
flag TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<. (TPrimExp Int8 VName
2 :: Imp.TExp Int8)) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
                  Lambda GPUMem
lam' <- Lambda GPUMem -> ImpM GPUMem KernelEnv KernelOp (Lambda GPUMem)
forall rep (m :: * -> *).
(Renameable rep, MonadFreshNames m) =>
Lambda rep -> m (Lambda rep)
renameLambda Lambda GPUMem
scanOp'
                  KernelConstants
-> TExp Int64
-> VName
-> [VName]
-> Lambda GPUMem
-> ImpM GPUMem KernelEnv KernelOp ()
inBlockScanLookback
                    KernelConstants
constants
                    TExp Int64
num_threads
                    VName
warpscan
                    [VName]
exchanges
                    Lambda GPUMem
lam'

                -- all threads of the warp read the result of reduction
                VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Int8 -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Int8
flag) [] (VName -> SubExp
Var VName
warpscan) [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 TExp Int32
warpSize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1]
                [(TV Any, VName)]
-> ((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([TV Any] -> [VName] -> [(TV Any, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [TV Any]
aggrs [VName]
exchanges) (((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((TV Any, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(TV Any
aggr, VName
exchange) ->
                  VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
aggr) [] (VName -> SubExp
Var VName
exchange) [TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 TExp Int32
warpSize TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1]
                -- update read offset
                TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf
                  (TV Int8 -> TPrimExp Int8 VName
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int8
flag TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TPrimExp Int8 VName
forall a. Num a => a
statusP)
                  (TV Int32
readOffset TV Int32 -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. TV t -> TExp t -> ImpM rep r op ()
<-- TExp Int32
loopStop)
                  ( TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TV Int8 -> TPrimExp Int8 VName
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int8
flag TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TPrimExp Int8 VName
forall a. Num a => a
statusA) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
                      TV Int32
readOffset TV Int32 -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. TV t -> TExp t -> ImpM rep r op ()
<-- TV Int32 -> TExp Int32
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int32
readOffset TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32 -> TExp Int32
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int32 v
zExt32 TExp Int32
warpSize
                  )

                -- update prefix if flag different than STATUS_X:
                TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TV Int8 -> TPrimExp Int8 VName
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int8
flag TPrimExp Int8 VName -> TPrimExp Int8 VName -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.>. (TPrimExp Int8 VName
forall a. Num a => a
statusX :: Imp.TExp Int8)) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
                  Lambda GPUMem
lam <- Lambda GPUMem -> ImpM GPUMem KernelEnv KernelOp (Lambda GPUMem)
forall rep (m :: * -> *).
(Renameable rep, MonadFreshNames m) =>
Lambda rep -> m (Lambda rep)
renameLambda Lambda GPUMem
scanOp'
                  let ([VName]
xs, [VName]
ys) = Int -> [VName] -> ([VName], [VName])
forall a. Int -> [a] -> ([a], [a])
splitAt ([PrimType] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [PrimType]
tys) ([VName] -> ([VName], [VName])) -> [VName] -> ([VName], [VName])
forall a b. (a -> b) -> a -> b
$ (Param (MemInfo SubExp NoUniqueness MemBind) -> VName)
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> [a] -> [b]
map Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName ([Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName])
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams Lambda GPUMem
lam
                  [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
xs [TV Any]
aggrs) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
x, TV Any
aggr) -> VName -> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. VName -> TExp t -> ImpM rep r op ()
dPrimV_ VName
x (TV Any -> TExp Any
forall {k} (t :: k). TV t -> TExp t
tvExp TV Any
aggr)
                  [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
ys [TV Any]
prefixes) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
y, TV Any
prefix) -> VName -> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. VName -> TExp t -> ImpM rep r op ()
dPrimV_ VName
y (TV Any -> TExp Any
forall {k} (t :: k). TV t -> TExp t
tvExp TV Any
prefix)
                  Names
-> Stms GPUMem
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
Names -> Stms rep -> ImpM rep r op () -> ImpM rep r op ()
compileStms Names
forall a. Monoid a => a
mempty (Body GPUMem -> Stms GPUMem
forall rep. Body rep -> Stms rep
bodyStms (Body GPUMem -> Stms GPUMem) -> Body GPUMem -> Stms GPUMem
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
lam) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                    [(TV Any, PrimType, SubExp)]
-> ((TV Any, PrimType, SubExp)
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([TV Any] -> [PrimType] -> [SubExp] -> [(TV Any, PrimType, SubExp)]
forall a b c. [a] -> [b] -> [c] -> [(a, b, c)]
zip3 [TV Any]
prefixes [PrimType]
tys ([SubExp] -> [(TV Any, PrimType, SubExp)])
-> [SubExp] -> [(TV Any, PrimType, SubExp)]
forall a b. (a -> b) -> a -> b
$ (SubExpRes -> SubExp) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> [a] -> [b]
map SubExpRes -> SubExp
resSubExp ([SubExpRes] -> [SubExp]) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> a -> b
$ Body GPUMem -> [SubExpRes]
forall rep. Body rep -> [SubExpRes]
bodyResult (Body GPUMem -> [SubExpRes]) -> Body GPUMem -> [SubExpRes]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
lam) (((TV Any, PrimType, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((TV Any, PrimType, SubExp)
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                      \(TV Any
prefix, PrimType
ty, SubExp
res) -> TV Any
prefix TV Any -> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. TV t -> TExp t -> ImpM rep r op ()
<-- Exp -> TExp Any
forall {k} (t :: k) v. PrimExp v -> TPrimExp t v
TPrimExp (PrimType -> SubExp -> Exp
forall a. ToExp a => PrimType -> a -> Exp
toExp' PrimType
ty SubExp
res)
                KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localFence
          )

        -- end sWhile
        -- end sIf
        TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int32
0) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
          Lambda GPUMem
scanOp'''' <- Lambda GPUMem -> ImpM GPUMem KernelEnv KernelOp (Lambda GPUMem)
forall rep (m :: * -> *).
(Renameable rep, MonadFreshNames m) =>
Lambda rep -> m (Lambda rep)
renameLambda Lambda GPUMem
scanOp'
          let xs :: [VName]
xs = (Param (MemInfo SubExp NoUniqueness MemBind) -> VName)
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> [a] -> [b]
map Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName ([Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName])
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> a -> b
$ Int
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a. Int -> [a] -> [a]
take ([PrimType] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [PrimType]
tys) ([Param (MemInfo SubExp NoUniqueness MemBind)]
 -> [Param (MemInfo SubExp NoUniqueness MemBind)])
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams Lambda GPUMem
scanOp''''
              ys :: [VName]
ys = (Param (MemInfo SubExp NoUniqueness MemBind) -> VName)
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> [a] -> [b]
map Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName ([Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName])
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> a -> b
$ Int
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a. Int -> [a] -> [a]
drop ([PrimType] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [PrimType]
tys) ([Param (MemInfo SubExp NoUniqueness MemBind)]
 -> [Param (MemInfo SubExp NoUniqueness MemBind)])
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
-> [Param (MemInfo SubExp NoUniqueness MemBind)]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams Lambda GPUMem
scanOp''''
          TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TExp Int32
boundary TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int64 -> TExp Int32
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int32 v
sExt32 (TExp Int64
group_size' TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
forall a. Num a => a
m)) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
            [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
xs [TV Any]
prefixes) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
x, TV Any
prefix) -> VName -> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. VName -> TExp t -> ImpM rep r op ()
dPrimV_ VName
x (TExp Any -> ImpM GPUMem KernelEnv KernelOp ())
-> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ TV Any -> TExp Any
forall {k} (t :: k). TV t -> TExp t
tvExp TV Any
prefix
            [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
ys [TV Any]
accs) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
y, TV Any
acc) -> VName -> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. VName -> TExp t -> ImpM rep r op ()
dPrimV_ VName
y (TExp Any -> ImpM GPUMem KernelEnv KernelOp ())
-> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ TV Any -> TExp Any
forall {k} (t :: k). TV t -> TExp t
tvExp TV Any
acc
            Names
-> Stms GPUMem
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
Names -> Stms rep -> ImpM rep r op () -> ImpM rep r op ()
compileStms Names
forall a. Monoid a => a
mempty (Body GPUMem -> Stms GPUMem
forall rep. Body rep -> Stms rep
bodyStms (Body GPUMem -> Stms GPUMem) -> Body GPUMem -> Stms GPUMem
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
scanOp'''') (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
              ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                [(VName, SubExp)]
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [SubExp] -> [(VName, SubExp)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
incprefixArrays ([SubExp] -> [(VName, SubExp)]) -> [SubExp] -> [(VName, SubExp)]
forall a b. (a -> b) -> a -> b
$ (SubExpRes -> SubExp) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> [a] -> [b]
map SubExpRes -> SubExp
resSubExp ([SubExpRes] -> [SubExp]) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> a -> b
$ Body GPUMem -> [SubExpRes]
forall rep. Body rep -> [SubExpRes]
bodyResult (Body GPUMem -> [SubExpRes]) -> Body GPUMem -> [SubExpRes]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
scanOp'''') (((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
                  \(VName
incprefixArray, SubExp
res) -> VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
incprefixArray [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId] SubExp
res []
            KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
globalFence
            ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op a. ImpM rep r op a -> ImpM rep r op a
everythingVolatile (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
statusFlags [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId] (IntType -> Integer -> SubExp
intConst IntType
Int8 Integer
forall a. Num a => a
statusP) []
          [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
exchanges [TV Any]
prefixes) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
exchange, TV Any
prefix) ->
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
exchange [TExp Int64
0] (TV Any -> SubExp
forall {k} (t :: k). TV t -> SubExp
tvSize TV Any
prefix) []
          [(TV Any, PrimType, SubExp)]
-> ((TV Any, PrimType, SubExp)
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([TV Any] -> [PrimType] -> [SubExp] -> [(TV Any, PrimType, SubExp)]
forall a b c. [a] -> [b] -> [c] -> [(a, b, c)]
zip3 [TV Any]
accs [PrimType]
tys [SubExp]
scanOpNe) (((TV Any, PrimType, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((TV Any, PrimType, SubExp)
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(TV Any
acc, PrimType
ty, SubExp
ne) ->
            TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
acc VName -> Exp -> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. VName -> Exp -> ImpM rep r op ()
<~~ PrimType -> SubExp -> Exp
forall a. ToExp a => PrimType -> a -> Exp
toExp' PrimType
ty SubExp
ne
      -- end sWhen
      -- end sWhen

      TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TPrimExp Bool VName -> TPrimExp Bool VName
forall v. TPrimExp Bool v -> TPrimExp Bool v
bNot (TPrimExp Bool VName -> TPrimExp Bool VName)
-> TPrimExp Bool VName -> TPrimExp Bool VName
forall a b. (a -> b) -> a -> b
$ TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId TExp Int64 -> TExp Int64 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int64
0) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
        KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier
        [(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
exchanges [TV Any]
prefixes) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
exchange, TV Any
prefix) ->
          VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix (TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
prefix) [] (VName -> SubExp
Var VName
exchange) [TExp Int64
0]
        KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier
    -- end sWhen
    -- end sComment

    Lambda GPUMem
scanOp''''' <- Lambda GPUMem -> ImpM GPUMem KernelEnv KernelOp (Lambda GPUMem)
forall rep (m :: * -> *).
(Renameable rep, MonadFreshNames m) =>
Lambda rep -> m (Lambda rep)
renameLambda Lambda GPUMem
scanOp'
    Lambda GPUMem
scanOp'''''' <- Lambda GPUMem -> ImpM GPUMem KernelEnv KernelOp (Lambda GPUMem)
forall rep (m :: * -> *).
(Renameable rep, MonadFreshNames m) =>
Lambda rep -> m (Lambda rep)
renameLambda Lambda GPUMem
scanOp'

    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Distribute results" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      let ([VName]
xs, [VName]
ys) = Int -> [VName] -> ([VName], [VName])
forall a. Int -> [a] -> ([a], [a])
splitAt ([PrimType] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [PrimType]
tys) ([VName] -> ([VName], [VName])) -> [VName] -> ([VName], [VName])
forall a b. (a -> b) -> a -> b
$ (Param (MemInfo SubExp NoUniqueness MemBind) -> VName)
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> [a] -> [b]
map Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName ([Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName])
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams Lambda GPUMem
scanOp'''''
          ([VName]
xs', [VName]
ys') = Int -> [VName] -> ([VName], [VName])
forall a. Int -> [a] -> ([a], [a])
splitAt ([PrimType] -> Int
forall a. [a] -> Int
forall (t :: * -> *) a. Foldable t => t a -> Int
length [PrimType]
tys) ([VName] -> ([VName], [VName])) -> [VName] -> ([VName], [VName])
forall a b. (a -> b) -> a -> b
$ (Param (MemInfo SubExp NoUniqueness MemBind) -> VName)
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> [a] -> [b]
map Param (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. Param dec -> VName
paramName ([Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName])
-> [Param (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> [LParam GPUMem]
forall rep. Lambda rep -> [LParam rep]
lambdaParams Lambda GPUMem
scanOp''''''

      [((TV Any, TV Any), (VName, VName), (VName, VName), PrimType)]
-> (((TV Any, TV Any), (VName, VName), (VName, VName), PrimType)
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([(TV Any, TV Any)]
-> [(VName, VName)]
-> [(VName, VName)]
-> [PrimType]
-> [((TV Any, TV Any), (VName, VName), (VName, VName), PrimType)]
forall a b c d. [a] -> [b] -> [c] -> [d] -> [(a, b, c, d)]
zip4 ([TV Any] -> [TV Any] -> [(TV Any, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [TV Any]
prefixes [TV Any]
accs) ([VName] -> [VName] -> [(VName, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
xs [VName]
xs') ([VName] -> [VName] -> [(VName, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
ys [VName]
ys') [PrimType]
tys) ((((TV Any, TV Any), (VName, VName), (VName, VName), PrimType)
  -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (((TV Any, TV Any), (VName, VName), (VName, VName), PrimType)
    -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
        \((TV Any
prefix, TV Any
acc), (VName
x, VName
x'), (VName
y, VName
y'), PrimType
ty) -> do
          VName -> PrimType -> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. VName -> PrimType -> ImpM rep r op ()
dPrim_ VName
x PrimType
ty
          VName -> PrimType -> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. VName -> PrimType -> ImpM rep r op ()
dPrim_ VName
y PrimType
ty
          VName -> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. VName -> TExp t -> ImpM rep r op ()
dPrimV_ VName
x' (TExp Any -> ImpM GPUMem KernelEnv KernelOp ())
-> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ TV Any -> TExp Any
forall {k} (t :: k). TV t -> TExp t
tvExp TV Any
prefix
          VName -> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op. VName -> TExp t -> ImpM rep r op ()
dPrimV_ VName
y' (TExp Any -> ImpM GPUMem KernelEnv KernelOp ())
-> TExp Any -> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ TV Any -> TExp Any
forall {k} (t :: k). TV t -> TExp t
tvExp TV Any
acc

      TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName
-> ImpM rep r op () -> ImpM rep r op () -> ImpM rep r op ()
sIf
        (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
forall a. Num a => a
m TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<. TExp Int32
boundary TPrimExp Bool VName -> TPrimExp Bool VName -> TPrimExp Bool VName
forall v.
Eq v =>
TPrimExp Bool v -> TPrimExp Bool v -> TPrimExp Bool v
.&&. TPrimExp Bool VName -> TPrimExp Bool VName
forall v. TPrimExp Bool v -> TPrimExp Bool v
bNot TPrimExp Bool VName
blockNewSgm)
        ( Names
-> Stms GPUMem
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
Names -> Stms rep -> ImpM rep r op () -> ImpM rep r op ()
compileStms Names
forall a. Monoid a => a
mempty (Body GPUMem -> Stms GPUMem
forall rep. Body rep -> Stms rep
bodyStms (Body GPUMem -> Stms GPUMem) -> Body GPUMem -> Stms GPUMem
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
scanOp'''''') (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
            [(VName, PrimType, SubExp)]
-> ((VName, PrimType, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [PrimType] -> [SubExp] -> [(VName, PrimType, SubExp)]
forall a b c. [a] -> [b] -> [c] -> [(a, b, c)]
zip3 [VName]
xs [PrimType]
tys ([SubExp] -> [(VName, PrimType, SubExp)])
-> [SubExp] -> [(VName, PrimType, SubExp)]
forall a b. (a -> b) -> a -> b
$ (SubExpRes -> SubExp) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> [a] -> [b]
map SubExpRes -> SubExp
resSubExp ([SubExpRes] -> [SubExp]) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> a -> b
$ Body GPUMem -> [SubExpRes]
forall rep. Body rep -> [SubExpRes]
bodyResult (Body GPUMem -> [SubExpRes]) -> Body GPUMem -> [SubExpRes]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
scanOp'''''') (((VName, PrimType, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, PrimType, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
              \(VName
x, PrimType
ty, SubExp
res) -> VName
x VName -> Exp -> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. VName -> Exp -> ImpM rep r op ()
<~~ PrimType -> SubExp -> Exp
forall a. ToExp a => PrimType -> a -> Exp
toExp' PrimType
ty SubExp
res
        )
        ([(VName, TV Any)]
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [TV Any] -> [(VName, TV Any)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
xs [TV Any]
accs) (((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, TV Any) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
x, TV Any
acc) -> VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
x [] (VName -> SubExp
Var (VName -> SubExp) -> VName -> SubExp
forall a b. (a -> b) -> a -> b
$ TV Any -> VName
forall {k} (t :: k). TV t -> VName
tvVar TV Any
acc) [])
      -- calculate where previous thread stopped, to determine number of
      -- elements left before new segment.
      TExp Int32
stop <-
        String -> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"stopping_point" (TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32))
-> TExp Int32 -> ImpM GPUMem KernelEnv KernelOp (TExp Int32)
forall a b. (a -> b) -> a -> b
$
          TExp Int32
segsize_compact TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
forall a. Num a => a
m TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
1 TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
+ TExp Int32
segsize_compact TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
boundary) TExp Int32 -> TExp Int32 -> TExp Int32
forall a. IntegralExp a => a -> a -> a
`rem` TExp Int32
segsize_compact
      String
-> TExp Int64
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op.
String
-> TExp t -> (TExp t -> ImpM rep r op ()) -> ImpM rep r op ()
sFor String
"i" TExp Int64
forall a. Num a => a
m ((TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \TExp Int64
i -> do
        TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TExp Int64 -> TExp Int32
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int32 v
sExt32 TExp Int64
i TExp Int32 -> TExp Int32 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<. TExp Int32
stop TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
- TExp Int32
1) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
          [(VName, VName)]
-> ((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [VName] -> [(VName, VName)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
privateArrays [VName]
ys) (((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
src, VName
y) ->
            -- only include prefix for the first segment part per thread
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
y [] (VName -> SubExp
Var VName
src) [TExp Int64
i]
          Names
-> Stms GPUMem
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
Names -> Stms rep -> ImpM rep r op () -> ImpM rep r op ()
compileStms Names
forall a. Monoid a => a
mempty (Body GPUMem -> Stms GPUMem
forall rep. Body rep -> Stms rep
bodyStms (Body GPUMem -> Stms GPUMem) -> Body GPUMem -> Stms GPUMem
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
scanOp''''') (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
            [(VName, SubExp)]
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [SubExp] -> [(VName, SubExp)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
privateArrays ([SubExp] -> [(VName, SubExp)]) -> [SubExp] -> [(VName, SubExp)]
forall a b. (a -> b) -> a -> b
$ (SubExpRes -> SubExp) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> [a] -> [b]
map SubExpRes -> SubExp
resSubExp ([SubExpRes] -> [SubExp]) -> [SubExpRes] -> [SubExp]
forall a b. (a -> b) -> a -> b
$ Body GPUMem -> [SubExpRes]
forall rep. Body rep -> [SubExpRes]
bodyResult (Body GPUMem -> [SubExpRes]) -> Body GPUMem -> [SubExpRes]
forall a b. (a -> b) -> a -> b
$ Lambda GPUMem -> Body GPUMem
forall rep. Lambda rep -> Body rep
lambdaBody Lambda GPUMem
scanOp''''') (((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, SubExp) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
              \(VName
dest, SubExp
res) ->
                VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
dest [TExp Int64
i] SubExp
res []

    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"Transpose scan output and Write it to global memory in coalesced fashion" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
      [(VName, VName, VName)]
-> ((VName, VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ ([VName] -> [VName] -> [VName] -> [(VName, VName, VName)]
forall a b c. [a] -> [b] -> [c] -> [(a, b, c)]
zip3 [VName]
transposedArrays [VName]
privateArrays ([VName] -> [(VName, VName, VName)])
-> [VName] -> [(VName, VName, VName)]
forall a b. (a -> b) -> a -> b
$ (PatElem (MemInfo SubExp NoUniqueness MemBind) -> VName)
-> [PatElem (MemInfo SubExp NoUniqueness MemBind)] -> [VName]
forall a b. (a -> b) -> [a] -> [b]
map PatElem (MemInfo SubExp NoUniqueness MemBind) -> VName
forall dec. PatElem dec -> VName
patElemName [PatElem (MemInfo SubExp NoUniqueness MemBind)]
all_pes) (((VName, VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ((VName, VName, VName) -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \(VName
locmem, VName
priv, VName
dest) -> do
        -- sOp localBarrier
        String
-> TExp Int64
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op.
String
-> TExp t -> (TExp t -> ImpM rep r op ()) -> ImpM rep r op ()
sFor String
"i" TExp Int64
forall a. Num a => a
m ((TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \TExp Int64
i -> do
          TV Int64
sharedIdx <-
            String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TV Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TV t)
dPrimV String
"sharedIdx" (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TV Int64))
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TV Int64)
forall a b. (a -> b) -> a -> b
$
              TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants TExp Int32 -> TExp Int32 -> TExp Int32
forall a. Num a => a -> a -> a
* TExp Int32
forall a. Num a => a
m) TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int64
i
          VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
locmem [TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
sharedIdx] (VName -> SubExp
Var VName
priv) [TExp Int64
i]
        KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier
        String
-> TExp Int64
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall {k} (t :: k) rep r op.
String
-> TExp t -> (TExp t -> ImpM rep r op ()) -> ImpM rep r op ()
sFor String
"i" TExp Int64
forall a. Num a => a
m ((TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
 -> ImpM GPUMem KernelEnv KernelOp ())
-> (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ \TExp Int64
i -> do
          TExp Int64
flat_idx <-
            String -> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall {k} (t :: k) rep r op.
String -> TExp t -> ImpM rep r op (TExp t)
dPrimVE String
"flat_idx" (TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64))
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp (TExp Int64)
forall a b. (a -> b) -> a -> b
$
              TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
blockOff
                TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ KernelConstants -> TExp Int64
kernelGroupSize KernelConstants
constants TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
* TExp Int64
i
                TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
+ TExp Int32 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (KernelConstants -> TExp Int32
kernelLocalThreadId KernelConstants
constants)
          [(VName, TExp Int64)]
-> TExp Int64 -> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
[(VName, TExp Int64)] -> TExp Int64 -> ImpM rep r op ()
dIndexSpace ([VName] -> [TExp Int64] -> [(VName, TExp Int64)]
forall a b. [a] -> [b] -> [(a, b)]
zip [VName]
gtids [TExp Int64]
dims') TExp Int64
flat_idx
          TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TExp Int64
flat_idx TExp Int64 -> TExp Int64 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.<. TExp Int64
n) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$ do
            VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix
              VName
dest
              ((VName -> TExp Int64) -> [VName] -> [TExp Int64]
forall a b. (a -> b) -> [a] -> [b]
map VName -> TExp Int64
forall a. a -> TPrimExp Int64 a
Imp.le64 [VName]
gtids)
              (VName -> SubExp
Var VName
locmem)
              [TExp Int64 -> TExp Int64
forall {k} (t :: k) v. IntExp t => TPrimExp t v -> TPrimExp Int64 v
sExt64 (TExp Int64 -> TExp Int64) -> TExp Int64 -> TExp Int64
forall a b. (a -> b) -> a -> b
$ TExp Int64
flat_idx TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
blockOff]
        KernelOp -> ImpM GPUMem KernelEnv KernelOp ()
forall op rep r. op -> ImpM rep r op ()
sOp KernelOp
localBarrier

    Text
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op. Text -> ImpM rep r op () -> ImpM rep r op ()
sComment Text
"If this is the last block, reset the dynamicId" (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
      TPrimExp Bool VName
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
TPrimExp Bool VName -> ImpM rep r op () -> ImpM rep r op ()
sWhen (TV Int64 -> TExp Int64
forall {k} (t :: k). TV t -> TExp t
tvExp TV Int64
dynamicId TExp Int64 -> TExp Int64 -> TPrimExp Bool VName
forall {k} v (t :: k).
Eq v =>
TPrimExp t v -> TPrimExp t v -> TPrimExp Bool v
.==. TExp Int64
num_groups' TExp Int64 -> TExp Int64 -> TExp Int64
forall a. Num a => a -> a -> a
- TExp Int64
1) (ImpM GPUMem KernelEnv KernelOp ()
 -> ImpM GPUMem KernelEnv KernelOp ())
-> ImpM GPUMem KernelEnv KernelOp ()
-> ImpM GPUMem KernelEnv KernelOp ()
forall a b. (a -> b) -> a -> b
$
        VName
-> [TExp Int64]
-> SubExp
-> [TExp Int64]
-> ImpM GPUMem KernelEnv KernelOp ()
forall rep r op.
VName -> [TExp Int64] -> SubExp -> [TExp Int64] -> ImpM rep r op ()
copyDWIMFix VName
globalId [TExp Int64
0] (Int32 -> SubExp
forall v. IsValue v => v -> SubExp
constant (Int32
0 :: Int32)) []
{-# NOINLINE compileSegScan #-}