{-# LANGUAGE TypeFamilies #-}

-- | A representation with flat parallelism via GPU-oriented kernels.
module Futhark.IR.GPU
  ( GPU,

    -- * Module re-exports
    module Futhark.IR.Prop,
    module Futhark.IR.Traversals,
    module Futhark.IR.Pretty,
    module Futhark.IR.Syntax,
    module Futhark.IR.GPU.Op,
    module Futhark.IR.GPU.Sizes,
    module Futhark.IR.SOACS.SOAC,
  )
where

import Futhark.Builder
import Futhark.Construct
import Futhark.IR.GPU.Op
import Futhark.IR.GPU.Sizes
import Futhark.IR.Pretty
import Futhark.IR.Prop
import Futhark.IR.SOACS.SOAC hiding (HistOp (..))
import Futhark.IR.Syntax
import Futhark.IR.Traversals
import Futhark.IR.TypeCheck qualified as TC

-- | The phantom data type for the kernels representation.
data GPU

instance RepTypes GPU where
  type Op GPU = HostOp GPU (SOAC GPU)

instance ASTRep GPU where
  expTypesFromPat :: forall (m :: * -> *).
(HasScope GPU m, Monad m) =>
Pat (LetDec GPU) -> m [BranchType GPU]
expTypesFromPat = forall (f :: * -> *) a. Applicative f => a -> f a
pure forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall dec. Typed dec => Pat dec -> [ExtType]
expExtTypesFromPat

instance TC.CheckableOp GPU where
  checkOp :: OpWithAliases (Op GPU) -> TypeM GPU ()
checkOp = forall {k} {rep :: k}.
(OpWithAliases (Op rep)
 ~ HostOp (Aliases rep) (SOAC (Aliases rep)),
 Checkable rep) =>
Maybe SegLevel
-> HostOp (Aliases rep) (SOAC (Aliases rep)) -> TypeM rep ()
typeCheckGPUOp forall a. Maybe a
Nothing
    where
      typeCheckGPUOp :: Maybe SegLevel
-> HostOp (Aliases rep) (SOAC (Aliases rep)) -> TypeM rep ()
typeCheckGPUOp Maybe SegLevel
lvl =
        forall {k} (rep :: k) op.
Checkable rep =>
(SegLevel -> OpWithAliases (Op rep) -> TypeM rep ())
-> Maybe SegLevel
-> (op -> TypeM rep ())
-> HostOp (Aliases rep) op
-> TypeM rep ()
typeCheckHostOp (Maybe SegLevel
-> HostOp (Aliases rep) (SOAC (Aliases rep)) -> TypeM rep ()
typeCheckGPUOp forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. a -> Maybe a
Just) Maybe SegLevel
lvl forall {k} (rep :: k).
Checkable rep =>
SOAC (Aliases rep) -> TypeM rep ()
typeCheckSOAC

instance TC.Checkable GPU

instance Buildable GPU where
  mkBody :: Stms GPU -> Result -> Body GPU
mkBody = forall {k} (rep :: k).
BodyDec rep -> Stms rep -> Result -> Body rep
Body ()
  mkExpPat :: [Ident] -> Exp GPU -> Pat (LetDec GPU)
mkExpPat [Ident]
idents Exp GPU
_ = [Ident] -> Pat Type
basicPat [Ident]
idents
  mkExpDec :: Pat (LetDec GPU) -> Exp GPU -> ExpDec GPU
mkExpDec Pat (LetDec GPU)
_ Exp GPU
_ = ()
  mkLetNames :: forall (m :: * -> *).
(MonadFreshNames m, HasScope GPU m) =>
[VName] -> Exp GPU -> m (Stm GPU)
mkLetNames = forall {k} (rep :: k) (m :: * -> *).
(ExpDec rep ~ (), LetDec rep ~ Type, MonadFreshNames m,
 TypedOp (Op rep), HasScope rep m) =>
[VName] -> Exp rep -> m (Stm rep)
simpleMkLetNames

instance BuilderOps GPU

instance PrettyRep GPU

instance HasSegOp GPU where
  type SegOpLevel GPU = SegLevel
  asSegOp :: Op GPU -> Maybe (SegOp (SegOpLevel GPU) GPU)
asSegOp (SegOp SegOp SegLevel GPU
op) = forall a. a -> Maybe a
Just SegOp SegLevel GPU
op
  asSegOp Op GPU
_ = forall a. Maybe a
Nothing
  segOp :: SegOp (SegOpLevel GPU) GPU -> Op GPU
segOp = forall {k} (rep :: k) op. SegOp SegLevel rep -> HostOp rep op
SegOp