import qualified Control.Monad as Monad
import qualified Data.Map as Map
import qualified Maybe
+import qualified Data.Either as Either
import Data.Accessor
import Debug.Trace
import CoreSyn
import Type
import qualified Var
+import qualified IdInfo
-- Local imports
import Constants
import CoreTools
import Pretty
+-----------------------------------------------------------------------------
+-- Functions to generate VHDL for builtin functions
+-----------------------------------------------------------------------------
+
-- | A function to wrap a builder-like function that expects its arguments to
-- be expressions.
genExprArgs ::
(dst -> func -> [AST.Expr] -> res)
- -> (dst -> func -> [CoreSyn.CoreExpr] -> res)
+ -> (dst -> func -> [Either CoreSyn.CoreExpr AST.Expr] -> res)
genExprArgs wrap dst func args = wrap dst func args'
- where args' = map (varToVHDLExpr.exprToVar) args
+ where args' = map (either (varToVHDLExpr.exprToVar) id) args
-- | A function to wrap a builder-like function that expects its arguments to
-- be variables.
genVarArgs ::
(dst -> func -> [Var.Var] -> res)
- -> (dst -> func -> [CoreSyn.CoreExpr] -> res)
+ -> (dst -> func -> [Either CoreSyn.CoreExpr AST.Expr] -> res)
genVarArgs wrap dst func args = wrap dst func args'
- where args' = map exprToVar args
+ where
+ args' = map exprToVar exprargs
+ -- Check (rather crudely) that all arguments are CoreExprs
+ (exprargs, []) = Either.partitionEithers args
-- | A function to wrap a builder-like function that produces an expression
-- and expects it to be assigned to the destination.
genExprRes ::
- (CoreSyn.CoreBndr -> func -> [arg] -> VHDLSession AST.Expr)
- -> (CoreSyn.CoreBndr -> func -> [arg] -> VHDLSession [AST.ConcSm])
+ ((Either CoreSyn.CoreBndr AST.VHDLName) -> func -> [arg] -> VHDLSession AST.Expr)
+ -> ((Either CoreSyn.CoreBndr AST.VHDLName) -> func -> [arg] -> VHDLSession [AST.ConcSm])
genExprRes wrap dst func args = do
expr <- wrap dst func args
- return $ [mkUncondAssign (Left dst) expr]
+ return $ [mkUncondAssign dst expr]
-- | Generate a binary operator application. The first argument should be a
-- constructor from the AST.Expr type, e.g. AST.And.
genOperator2 :: (AST.Expr -> AST.Expr -> AST.Expr) -> BuiltinBuilder
genOperator2 op = genExprArgs $ genExprRes (genOperator2' op)
-genOperator2' :: (AST.Expr -> AST.Expr -> AST.Expr) -> CoreSyn.CoreBndr -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
-genOperator2' op res f [arg1, arg2] = return $ op arg1 arg2
+genOperator2' :: (AST.Expr -> AST.Expr -> AST.Expr) -> dst -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
+genOperator2' op _ f [arg1, arg2] = return $ op arg1 arg2
-- | Generate a unary operator application
genOperator1 :: (AST.Expr -> AST.Expr) -> BuiltinBuilder
genOperator1 op = genExprArgs $ genExprRes (genOperator1' op)
-genOperator1' :: (AST.Expr -> AST.Expr) -> CoreSyn.CoreBndr -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
-genOperator1' op res f [arg] = return $ op arg
+genOperator1' :: (AST.Expr -> AST.Expr) -> dst -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
+genOperator1' op _ f [arg] = return $ op arg
-- | Generate a function call from the destination binder, function name and a
-- list of expressions (its arguments)
genFCall :: BuiltinBuilder
genFCall = genExprArgs $ genExprRes genFCall'
-genFCall' :: CoreSyn.CoreBndr -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
-genFCall' res f args = do
+genFCall' :: Either CoreSyn.CoreBndr AST.VHDLName -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
+genFCall' (Left res) f args = do
let fname = varToString f
let el_ty = (tfvec_elem . Var.varType) res
id <- vectorFunId el_ty fname
return $ AST.PrimFCall $ AST.FCall (AST.NSimple id) $
map (\exp -> Nothing AST.:=>: AST.ADExpr exp) args
+genFCall' (Right name) _ _ = error $ "Cannot generate builtin function call assigned to a VHDLName: " ++ show name
-- | Generate a generate statement for the builtin function "map"
genMap :: BuiltinBuilder
genMap = genVarArgs genMap'
-genMap' res f [mapped_f, arg] = do
+genMap' (Left res) f [mapped_f, arg] = do
signatures <- getA vsSignatures
let entity = Maybe.fromMaybe
(error $ "Using function '" ++ (varToString mapped_f) ++ "' without signature? This should not happen!")
let
-- Setup the generate scheme
len = (tfvec_len . Var.varType) res
+ -- TODO: Use something better than varToString
label = mkVHDLExtId ("mapVector" ++ (varToString res))
nPar = AST.unsafeVHDLBasicId "n"
range = AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len-1))
genSm = AST.CSGSm $ AST.GenerateSm label genScheme [] [compins]
in
return $ [genSm]
+genMap' (Right name) _ _ = error $ "Cannot generate map function call assigned to a VHDLName: " ++ show name
genZipWith :: BuiltinBuilder
genZipWith = genVarArgs genZipWith'
-genZipWith' res f args@[zipped_f, arg1, arg2] = do
+genZipWith' :: (Either CoreSyn.CoreBndr AST.VHDLName) -> CoreSyn.CoreBndr -> [Var.Var] -> VHDLSession [AST.ConcSm]
+genZipWith' (Left res) f args@[zipped_f, arg1, arg2] = do
signatures <- getA vsSignatures
let entity = Maybe.fromMaybe
(error $ "Using function '" ++ (varToString zipped_f) ++ "' without signature? This should not happen!")
let
-- Setup the generate scheme
len = (tfvec_len . Var.varType) res
+ -- TODO: Use something better than varToString
label = mkVHDLExtId ("zipWithVector" ++ (varToString res))
nPar = AST.unsafeVHDLBasicId "n"
range = AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len-1))
genSm = AST.CSGSm $ AST.GenerateSm label genScheme [] [compins]
in
return $ [genSm]
-
+{-
genFoldl :: BuiltinBuilder
genFoldl = genVarArgs genFoldl'
genFoldl' resVal f [folded_f, startVal, inVec] = do
(AST.NSimple tmpId) [AST.PrimLit $ show (len-1)])))
-- Return the generate functions
cellGn = AST.GenerateSm cellLabel cellGenScheme [] [compins,assign]
+-}
+-----------------------------------------------------------------------------
+-- Function to generate VHDL for applications
+-----------------------------------------------------------------------------
+genApplication ::
+ (Either CoreSyn.CoreBndr AST.VHDLName) -- ^ Where to store the result?
+ -> CoreSyn.CoreBndr -- ^ The function to apply
+ -> [Either CoreSyn.CoreExpr AST.Expr] -- ^ The arguments to apply
+ -> VHDLSession [AST.ConcSm] -- ^ The resulting concurrent statements
+genApplication dst f args =
+ case Var.globalIdVarDetails f of
+ IdInfo.DataConWorkId dc -> case dst of
+ -- It's a datacon. Create a record from its arguments.
+ Left bndr -> do
+ -- We have the bndr, so we can get at the type
+ labels <- getFieldLabels (Var.varType bndr)
+ return $ zipWith mkassign labels $ map (either exprToVHDLExpr id) args
+ where
+ mkassign :: AST.VHDLId -> AST.Expr -> AST.ConcSm
+ mkassign label arg =
+ let sel_name = mkSelectedName ((either varToVHDLName id) dst) label in
+ mkUncondAssign (Right sel_name) arg
+ Right _ -> error $ "Generate.genApplication Can't generate dataconstructor application without an original binder"
+ IdInfo.VanillaGlobal -> do
+ -- It's a global value imported from elsewhere. These can be builtin
+ -- functions. Look up the function name in the name table and execute
+ -- the associated builder if there is any and the argument count matches
+ -- (this should always be the case if it typechecks, but just to be
+ -- sure...).
+ case (Map.lookup (varToString f) globalNameTable) of
+ Just (arg_count, builder) ->
+ if length args == arg_count then
+ builder dst f args
+ else
+ error $ "Generate.genApplication Incorrect number of arguments to builtin function: " ++ pprString f ++ " Args: " ++ show args
+ Nothing -> error $ "Using function from another module that is not a known builtin: " ++ pprString f
+ IdInfo.NotGlobalId -> do
+ signatures <- getA vsSignatures
+ -- This is a local id, so it should be a function whose definition we
+ -- have and which can be turned into a component instantiation.
+ let
+ signature = Maybe.fromMaybe
+ (error $ "Using function '" ++ (varToString f) ++ "' without signature? This should not happen!")
+ (Map.lookup f signatures)
+ entity_id = ent_id signature
+ -- TODO: Using show here isn't really pretty, but we'll need some
+ -- unique-ish value...
+ label = "comp_ins_" ++ (either show show) dst
+ portmaps = mkAssocElems (map (either exprToVHDLExpr id) args) ((either varToVHDLName id) dst) signature
+ in
+ return [mkComponentInst label entity_id portmaps]
+ details -> error $ "Calling unsupported function " ++ pprString f ++ " with GlobalIdDetails " ++ pprString details
+-----------------------------------------------------------------------------
+-- Functions to generate functions dealing with vectors.
+-----------------------------------------------------------------------------
-- Returns the VHDLId of the vector function with the given name for the given
-- element type. Generates -- this function if needed.
(AST.PrimName $ AST.NSimple aPar)])
-- return res
copyExpr = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
+
+-----------------------------------------------------------------------------
+-- A table of builtin functions
+-----------------------------------------------------------------------------
+
+-- | The builtin functions we support. Maps a name to an argument count and a
+-- builder function.
+globalNameTable :: NameTable
+globalNameTable = Map.fromList
+ [ (exId , (2, genFCall ) )
+ , (replaceId , (3, genFCall ) )
+ , (headId , (1, genFCall ) )
+ , (lastId , (1, genFCall ) )
+ , (tailId , (1, genFCall ) )
+ , (initId , (1, genFCall ) )
+ , (takeId , (2, genFCall ) )
+ , (dropId , (2, genFCall ) )
+ , (plusgtId , (2, genFCall ) )
+ , (mapId , (2, genMap ) )
+ , (zipWithId , (3, genZipWith ) )
+ --, (foldlId , (3, genFoldl ) )
+ , (emptyId , (0, genFCall ) )
+ , (singletonId , (1, genFCall ) )
+ , (copyId , (2, genFCall ) )
+ , (hwxorId , (2, genOperator2 AST.Xor ) )
+ , (hwandId , (2, genOperator2 AST.And ) )
+ , (hworId , (2, genOperator2 AST.Or ) )
+ , (hwnotId , (1, genOperator1 AST.Not ) )
+ ]
projects / matthijs / master-project / cλash.git / blobdiff