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View of /branches/charisee/src/compiler/tree-il/tree-il.sml

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Revision 2670 - (download) (annotate)
Wed Jul 9 21:54:54 2014 UTC (5 years, 3 months ago) by cchiw
File size: 5851 byte(s)
 
(* tree-il.sml
 *
 * COPYRIGHT (c) 2011 The Diderot Project (http://diderot-language.cs.uchicago.edu)
 * All rights reserved.
 *
 * This representation restores the block structure and nested expression syntax
 * of the source language.
 *)

structure TreeIL =
  struct

    structure Op = TreeOps
    structure Ty = TreeILTypes
    structure ILF=TreeFunc
    structure  OprSet=ILF.OprSet
    structure  TySet=ILF.TySet

  

    datatype program = Program of {
        props : StrandUtil.program_prop list,

	types : Ty.ty list,
	oprations : ILF.oprator list,

        globals : var list,
        inputInit : block,
        globalInit : block,
        strands : strand list,
        initially : {
            isArray : bool,
            iterPrefix : block,
            iters : (var * exp * exp) list,
            createPrefix : block,
            strand : Atom.atom,
            args : exp list
          }
      }

    and strand = Strand of {
        name : Atom.atom,
        params : var list,
        state : state_var list,
        stateInit : block,
        methods : method list
      }

    and state_var = SV of {
        name : string,          (* name (should be unique) *)
        id : Stamp.stamp,       (* unique ID *)
        ty : Ty.ty,             (* type *)
        varying : bool,         (* varies over the lifetime of the strand *)
        output : bool           (* is the output value of the strand *)
      }

    and method = Method of {
        name : StrandUtil.method_name,
        body : block            (* method body *)
      }

    and subblock = Pink of {
        locals : var list,
        types:  TySet.set,
        opr:  OprSet.set,
        body : stm list
      }
    and block = Block of {
        locals : var list,
        body : stm list
    }

    and stm
      = S_Comment of string list
      | S_Assign of var list * exp
      | S_IfThen of exp * block
      | S_IfThenElse of exp * block * block
    (* special Diderot forms *)
      | S_LoadImage of var * int * exp  (* load image data *)
      | S_Input of var * string * string * exp option (* get input *)
      | S_New of Atom.atom * exp list   (* new strand creation *)
      | S_Save of state_var list * exp  (* save strand state *)
      | S_Exit of exp list
    (* return functions for methods *)
      | S_Active
      | S_Stabilize
      | S_Die
 

    and exp
      = E_State of state_var
      | E_Var of var
      | E_Lit of Literal.literal
      | E_Op of Op.rator * exp list
      | E_Apply of MathFuns.name * exp list
      | E_Cons of Ty.ty * exp list
      | E_LoadVec of bool*int * int * exp * exp   (*aligned, Type:NativeVecTy newVec,  originalVec, addr, offset *)
      | E_mkVec   of bool*int *int * exp*Ty.ty* exp list 
            (*aligned, vec length,  originalVec,indexAt,Type:vectorLength(list),  single op*)
            

  

    and var = V of {
        name : string,                  (* name (should be unique) *)
        id : Stamp.stamp,               (* unique ID *)
        kind : var_kind,
        ty : Ty.ty                      (* type *)
      }

    and var_kind
      = VK_Global                       (* global variable *)
      | VK_Local                        (* includes strand parameters *)




    structure Var : sig

        val new : string * var_kind * Ty.ty -> var
        val kind : var -> var_kind
        val name : var -> string
        val toString : var -> string
        val ty : var -> Ty.ty

        structure Map : ORD_MAP where type Key.ord_key = var

      end = struct
        fun new (name, kind, ty) = V{
                name = name,
                id = Stamp.new(),
                kind = kind,
                ty = ty
              }
        fun kind (V{kind, ...}) = kind
        fun name (V{name, ...}) = name
        fun toString (V{name, id, ...}) = concat[name, "$", Stamp.toString id]
        fun ty (V{ty, ...}) = ty
        local
          structure VarOrd =
            struct
              type ord_key = var
              fun compare (V{id=a, ...}, V{id=b, ...}) = Stamp.compare(a, b)
            end
        in
        structure Map = RedBlackMapFn (VarOrd)
        end (* local *)
      end

    structure StateVar : sig
        val name : state_var -> string
        val ty : state_var -> Ty.ty
        val isOutput : state_var -> bool
        val isVarying : state_var -> bool
        val toString : state_var -> string
      end = struct
        fun name (SV{name, ...}) = name
        fun ty (SV{ty, ...}) = ty
        fun isOutput (SV{output, ...}) = output
        fun isVarying (SV{varying, ...}) = varying
        fun toString (SV{name, ...}) = "self." ^ name
      end

    fun kindToString k = (case k
           of VK_Global => "Global"
            | VK_Local => "Local"
          (* end case *))

    fun stateVarToString (SV{name, ...}) = "self." ^ name

 
    fun q m=Int.toString(m)
 
    fun toString(E_LoadVec(_,tyNew, tyOrig, arg, offset)) = String.concat["LDVec<",q tyNew ,
        ":",q  tyOrig, ">", "(", toString arg, ",", toString offset, ")"]
     | toString(E_mkVec(_,tyNew, tyOrig,indexAt,pieces,args)) =let
        val a= String.concatWith "," (List.map toString args)
        in
            String.concat["mkVec:",q tyNew,"|",q tyOrig,"@",toString indexAt,"[",
            Ty.toString pieces ,"]\n\t",a]
        end

     | toString (E_Op(rator, args)) = String.concat[Op.toString rator,"(",
        String.concatWith"," (List.map toString args),")"]
     | toString (E_Cons(ty, args)) =String.concat ["Cons:", Ty.toString ty, "(",
        String.concatWith"," (List.map toString args),")"]
     | toString (E_State x) = "State"
     | toString (E_Var x) = Var.name x
     | toString (E_Lit lit) = Literal.toString lit

    fun toStringS(S_Assign( _,e))=String.concat["Assignments=",toString e]

         
        
        
        
  end

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