blargCPU igraph

[snipe.git] / trans / trans.sml

diff --git a/trans/trans.sml b/trans/trans.sml
index 57e5faa390eb894a12f3514a25164f4b82d376ff..7c70af19d941e14c304d3073ac0a437818225fa6 100644 (file)
--- a/trans/trans.sml
+++ b/trans/trans.sml
@@ -1,4 +1,4 @@
-(* L2 Compiler
+(* L3 Compiler

  * AST -> IR Translator
  * Author: Kaustuv Chaudhuri <kaustuv+@cs.cmu.edu>
  * Modified by: Alex Vaynberg <alv@andrew.cmu.edu>
  * AST -> IR Translator
  * Author: Kaustuv Chaudhuri <kaustuv+@cs.cmu.edu>
  * Modified by: Alex Vaynberg <alv@andrew.cmu.edu>


@@ -10,7 +10,7 @@
 signature TRANS =
 sig
   (* translate abstract syntax tree to IR tree *)
 signature TRANS =
 sig
   (* translate abstract syntax tree to IR tree *)

-  val translate : Ast.program -> Tree.stm list
+  val translate : Ast.program -> Tree.program

 end
 
 structure Trans :> TRANS = 
 end
 
 structure Trans :> TRANS = 


@@ -38,121 +38,275 @@ struct
     | trans_oper A.GE = T.GE
     | trans_oper A.GT = T.GT
     | trans_oper _ = raise ErrorMsg.InternalError "expected AST binop, got AST unop"
     | trans_oper A.GE = T.GE
     | trans_oper A.GT = T.GT
     | trans_oper _ = raise ErrorMsg.InternalError "expected AST binop, got AST unop"

-  
-  and trans_unop A.NEGATIVE = T.NEG
-    | trans_unop A.BITNOT = T.BITNOT
-    | trans_unop A.BANG = T.BANG
-    | trans_unop _ = raise ErrorMsg.InternalError "expected AST unop, got AST binop"

 
 

-  and trans_exp env (A.Var(id)) =
-      (* after type-checking, id must be declared; do not guard lookup *)
-       T.TEMP (Symbol.look' env id)
-    | trans_exp env (A.ConstExp c) = T.CONST(c)
-    | trans_exp env (A.OpExp(oper, [e1, e2])) =
-       T.BINOP(trans_oper oper, trans_exp env e1, trans_exp env e2)
-    | trans_exp env (A.OpExp(oper, [e])) =
-        T.UNOP(trans_unop oper, trans_exp env e)
-    | trans_exp env (A.OpExp(oper, _)) =
-        raise ErrorMsg.InternalError "expected one or two operands, got it in the oven"
-    | trans_exp env (A.Marked(marked_exp)) =
-       trans_exp env (Mark.data marked_exp)
-    (* anything else should be impossible *)
+  fun translate (defs, funcs) =
+    let
+      val funclist = Symbol.elemsi funcs
+      val _ = Type.alignment_reset()
+      val _ = Type.sizeof_reset()
+      fun sizeof a = Type.sizeof defs a
+      fun alignment a = Type.alignment defs a
+      fun align t curpos = Type.align defs t curpos

 
 

-  (* trans_stms : Temp.temp Symbol.table -> (Label.label * Label.label) option -> A.stm list -> (Tree.stm list * Symbol.table)
-   * translates a statement to the corresponding IR
-   * we pass around the environment and the current loop context, if any
-   * (usually called ls, which contains a continue label and a break label)
-   *)
-  fun trans_stms env ls (A.Assign(id,e)::stms) =
-      let val t = Symbol.look' env id handle Option => Temp.new()
-         val env' = Symbol.bind env (id, t)
-         val (remainder, env') = trans_stms env' ls stms
-      in
-         (T.MOVE(T.TEMP(t), trans_exp env e)
-         :: remainder, env')
-      end
-    | trans_stms env ls (A.Return e::stms) =
-      let val (remainder, env') = trans_stms env ls stms
-      in 
-        (T.RETURN (trans_exp env e)
-        :: remainder, env')
-      end
-        
-    | trans_stms env ls (A.If(e, s, NONE)::stms) =
-        let val l = Label.new ()
-            val (strans, env') = trans_stms env ls s
-            val (remainder, env') = trans_stms env' ls stms
+      fun offset_s id (Type.Typedef(id')) =
+        let
+          val shit = Symbol.look' defs id'
+          fun eat (Type.Struct(l)) = l
+            | eat (Type.MarkedTypedef(a)) = eat (Mark.data a)
+          fun offset_s' ((id1,t)::l') curofs =
+            let
+              val a = align t curofs
+            in
+              if Symbol.compare(id,id1) = EQUAL
+                then a
+              else offset_s' l' (a + sizeof t)
+            end
+            | offset_s' nil _ = raise ErrorMsg.InternalError "looking for offset of something that isn't in the structure"

         in
         in

-            (T.JUMPIFN(trans_exp env e, l)
+          offset_s' (eat shit) 0
+        end
+        | offset_s _ _ = raise ErrorMsg.InternalError "cannot find offset into non-typedef"
+      
+      fun type_s id (Type.Typedef id') =
+        let
+          val td = 
+            case Type.defdata (Symbol.look' defs id')
+            of Type.Struct d => d
+             | _ => raise ErrorMsg.InternalError "data didn't return struct"
+          fun type_s' ((id',t)::l) =
+            if (Symbol.compare (id, id') = EQUAL)
+            then t
+            else type_s' l
+            | type_s' nil = raise ErrorMsg.InternalError "struct member not found in type_s"
+        in
+          type_s' td
+        end
+        | type_s id _ = raise ErrorMsg.InternalError "cannot find internal type non-typedef"
+      
+      fun deref (Type.Pointer i) = i
+        | deref (Type.Array i) = i
+        | deref _ = raise ErrorMsg.InternalError "cannot deref non-pointer"
+
+      fun trans_unop A.NEGATIVE = T.NEG
+        | trans_unop A.BITNOT = T.BITNOT
+        | trans_unop A.BANG = T.BANG
+        | trans_unop _ = raise ErrorMsg.InternalError "expected AST unop, got AST binop"
+      
+      fun typeof' vartypes exp = TypeChecker.typeof (defs, funcs) vartypes NONE exp
+
+      fun trans_exp env vartypes (A.Var(id)) =
+        (* after type-checking, id must be declared; do not guard lookup *)
+            T.TEMP (Symbol.look' env id)
+        | trans_exp env vartypes (A.ConstExp c) = T.CONST(c)
+        | trans_exp env vartypes (A.OpExp(oper, [e1, e2])) =
+            T.BINOP(trans_oper oper, trans_exp env vartypes e1, trans_exp env vartypes e2)
+        | trans_exp env vartypes (A.OpExp(oper, [e])) =
+            T.UNOP(trans_unop oper, trans_exp env vartypes e)
+        | trans_exp env vartypes (A.OpExp(oper, _)) =
+            raise ErrorMsg.InternalError "expected one or two operands, got it in the oven"
+        | trans_exp env vartypes (A.Marked(marked_exp)) =
+            trans_exp env vartypes (Mark.data marked_exp)
+        | trans_exp env vartypes (A.FuncCall(func, stms)) =
+            T.CALL(func,
+              List.map
+                (fn exp => (trans_exp env vartypes exp, Temp.sts (Type.size (typeof' vartypes exp))))
+                stms,
+              Temp.sts (Type.size (AstUtils.Function.returntype (Symbol.look' funcs func))))
+        | trans_exp env vartypes (A.Member (exp, id)) =
+            let
+              val apk = T.BINOP (T.ADD, trans_exp env vartypes exp, T.CONST (Word32.fromInt (offset_s id (typeof' vartypes exp))))
+              val tipo = type_s id (typeof' vartypes exp)
+            in
+             if Type.issmall tipo
+             then T.MEMORY(apk, Temp.sts (Type.size tipo))
+             else apk
+           end
+        | trans_exp env vartypes (A.DerefMember (exp, id)) =
+            trans_exp env vartypes (A.Member (A.Dereference (exp), id))
+        | trans_exp env vartypes (A.Dereference(exp)) =
+            if (Type.issmall (deref (typeof' vartypes exp)))
+            then T.MEMORY(trans_exp env vartypes exp, Temp.sts (Type.size (deref (typeof' vartypes exp))))
+            else trans_exp env vartypes exp
+        | trans_exp env vartypes (A.ArrIndex(exp1, exp2)) =
+            let
+              val asubk = T.BINOP(T.ADD, trans_exp env vartypes exp1, 
+                                  T.BINOP(T.MUL, trans_exp env vartypes exp2,
+                                          T.CONST(Word32.fromInt(sizeof (deref (typeof' vartypes exp1))))))
+              val tipo = deref (typeof' vartypes exp1)
+              val d =
+                if not (Flag.isset Flags.safe)
+                then asubk
+                else T.COND (T.BINOP
+                              (T.BE,
+                               T.MEMORY (T.BINOP (
+                                 T.SUB,
+                                 trans_exp env vartypes exp1, 
+                                 T.CONST 0w8), Temp.Long),
+                               trans_exp env vartypes exp2),
+                             T.NULLPTR,
+                             asubk)
+            in
+              if Type.issmall tipo
+              then T.MEMORY(d, Temp.sts (Type.size tipo))
+              else d
+            end
+        | trans_exp env vartypes (A.New(tipo)) =
+            let
+              val t1 = T.TEMP (Temp.new "result" Temp.Quad)
+            in
+              T.STMVAR (
+                [T.MOVE (t1, T.ALLOC (T.CONST (Word32.fromInt(sizeof tipo)))),
+                 T.EFFECT (T.MEMORY (t1, Temp.Long))],
+                t1)
+            end
+        | trans_exp env vartypes (A.NewArr(tipo, exp)) =
+            let
+              val size = T.BINOP(T.MUL, trans_exp env vartypes exp, T.CONST(Word32.fromInt(sizeof tipo)))
+              val t1 = T.TEMP (Temp.new "allocated address" Temp.Quad)
+              val ts = T.TEMP (Temp.new "size" Temp.Long)
+            in
+              if not (Flag.isset Flags.safe)
+              then T.STMVAR ([T.MOVE (t1, T.ALLOC size),
+                              T.EFFECT (T.COND (T.BINOP (T.EQ, trans_exp env vartypes exp, T.CONST 0w0), T.CONST 0w0, T.MEMORY (t1, Temp.Long)))],
+                             t1)
+              else T.COND (T.BINOP(T.EQ, size, T.CONST 0w0),
+                           T.NULLPTR,
+                           T.STMVAR (
+                             [T.MOVE(t1,
+                                T.COND(
+                                  T.BINOP(T.LT, size, T.CONST 0w0),
+                                  T.NULLPTR,
+                                  T.ALLOC (T.BINOP (T.ADD, size, T.CONST 0w8)))
+                                ),
+                              T.MOVE(T.MEMORY (t1, Temp.Long), trans_exp env vartypes exp)],
+                             T.BINOP(T.ADD, t1, T.CONST 0w8)))
+            end
+        | trans_exp env vartypes (A.Null) = T.NULLPTR
+        | trans_exp env vartypes (A.Conditional(c,e1,e2)) = T.COND(trans_exp env vartypes c, trans_exp env vartypes e1, trans_exp env vartypes e2)
+
+        (* anything else should be impossible *)
+
+      (* trans_stms : Temp.temp Symbol.table -> (Label.label * Label.label) option -> A.stm list -> Tree.stm list
+       * translates a statement to the corresponding IR
+       * we pass around the environment and the current loop context, if any
+       * (usually called ls, which contains a continue label and a break label)
+       *)
+      fun trans_stms vars vartypes ls (A.Assign(e1,e2)::stms) = T.MOVE(trans_exp vars vartypes e1, trans_exp vars vartypes e2)::(trans_stms vars vartypes ls stms)
+        | trans_stms vars vartypes ls (A.AsnOp(oop,e1,e2)::stms) =
+          let
+            val te1 = trans_exp vars vartypes e1
+            val te2 = trans_exp vars vartypes e2
+            val t1 = T.TEMP (Temp.new "memory deref cache" Temp.Quad)
+          in
+            case te1
+            of T.MEMORY(m,s) => T.MOVE(t1, m) :: T.MOVE (T.MEMORY(t1,s), T.BINOP(trans_oper oop, T.MEMORY(t1,s), te2)) :: (trans_stms vars vartypes ls stms)
+             | _ => T.MOVE(te1, T.BINOP(trans_oper oop, te1, te2)) :: (trans_stms vars vartypes ls stms)
+          end
+        | trans_stms vars vartypes ls (A.Return e::stms) =
+          let
+            val remainder = trans_stms vars vartypes ls stms
+          in 
+            T.RETURN (trans_exp vars vartypes e, Temp.sts (Type.size (typeof' vartypes e)))
+            :: remainder
+          end
+        | trans_stms vars vartypes ls (A.If(e, s, NONE)::stms) =
+          let
+            val l = Label.new ()
+            val strans = trans_stms vars vartypes ls s
+            val remainder = trans_stms vars vartypes ls stms
+          in
+            (T.JUMPIFN(trans_exp vars vartypes e, l)

             :: strans
             @ [T.LABEL (l)]
             :: strans
             @ [T.LABEL (l)]

-            @ remainder, env')
-        end
-    | trans_stms env ls (A.If(e, s, SOME s2)::stms) =
-        let val l = Label.new ()
+            @ remainder)
+          end
+        | trans_stms vars vartypes ls (A.If(e, s, SOME s2)::stms) =
+          let
+            val l = Label.new ()

             val l2 = Label.new ()
             val l2 = Label.new ()

-            val (s1trans, env') = trans_stms env ls s
-            val (s2trans, env') = trans_stms env' ls s2
-            val (remainder, env') = trans_stms env' ls stms
-        in
-            (T.JUMPIFN(trans_exp env e, l)
+            val s1trans = trans_stms vars vartypes ls s
+            val s2trans = trans_stms vars vartypes ls s2
+            val remainder = trans_stms vars vartypes ls stms
+          in
+            (T.JUMPIFN(trans_exp vars vartypes e, l)

             :: s1trans
             @ [T.JUMP (l2), T.LABEL (l)]
             @ s2trans
             @ [T.LABEL (l2)]
             :: s1trans
             @ [T.JUMP (l2), T.LABEL (l)]
             @ s2trans
             @ [T.LABEL (l2)]

-            @ remainder, env')
-        end
-    | trans_stms env ls (A.For(s1, e, s2, s)::stms) = 
-        let
-          val head = Label.new ()
-          val tail = Label.new ()
-          val loop = Label.new ()
-          val (stm1, env') = if isSome s1 then trans_stms env NONE [valOf s1] else (nil, env)
-          val (strans, env') = trans_stms env' (SOME(loop,tail)) s
-          val (stm2, env') = if isSome s2 then trans_stms env' NONE [valOf s2] else (nil, env')
-          val (remainder, env') = trans_stms env' ls stms
-        in
-          (stm1
-          @ [T.LABEL head, T.JUMPIFN(trans_exp env' e, tail)]
-          @ strans
-          @ [T.LABEL loop]
-          @ stm2
-          @ [T.JUMP head, T.LABEL tail]
-          @ remainder, env')
-        end
-    | trans_stms env ls (A.While(e, s)::stms) =
-       let
-         val head = Label.new ()
-         val tail = Label.new ()
-         val (strans, env') = trans_stms env (SOME(head,tail)) s
-         val (remainder, env') = trans_stms env' ls stms
-       in
-         (T.LABEL head
-         :: T.JUMPIFN(trans_exp env e, tail)
-         :: strans
-         @ [T.JUMP head, T.LABEL tail]
-         @ remainder, env')
-       end
-
-    | trans_stms env (SOME(b,e)) (A.Break::stms) =
-        let
-          val (remainder, env') = trans_stms env (SOME(b,e)) stms
-        in
-          ((T.JUMP e) :: remainder, env')
-        end
-    | trans_stms env  NONE       (A.Break::_) = raise ErrorMsg.InternalError "Break from invalid location... should have been caught in typechecker"
-    | trans_stms env (SOME(b,e)) (A.Continue::stms) =
-        let
-          val (remainder, env') = trans_stms env (SOME(b,e)) stms
-        in
-          ((T.JUMP b) :: remainder, env')
-        end
-    | trans_stms env  NONE       (A.Continue::_) = raise ErrorMsg.InternalError "Continue from invalid location... should have been caught in typechecker"
-
-    | trans_stms env ls (A.Nop::stms) = trans_stms env ls stms
-    | trans_stms env ls (A.MarkedStm m :: stms) = trans_stms env ls ((Mark.data m) :: stms)
-    | trans_stms env _ nil = (nil, env)
+            @ remainder)
+          end
+        | trans_stms vars vartypes ls (A.For(s1, e, s2, s)::stms) = 
+          let
+            val head = Label.new ()
+            val tail = Label.new ()
+            val loop = Label.new ()
+            val stm1 = if isSome s1 then trans_stms vars vartypes NONE [valOf s1] else nil
+            val strans = trans_stms vars vartypes (SOME(loop,tail)) s
+            val stm2 = if isSome s2 then trans_stms vars vartypes NONE [valOf s2] else nil
+            val remainder = trans_stms vars vartypes ls stms
+          in
+            (stm1
+            @ [T.LABEL head, T.JUMPIFN(trans_exp vars vartypes e, tail)]
+            @ strans
+            @ [T.LABEL loop]
+            @ stm2
+            @ [T.JUMP head, T.LABEL tail]
+            @ remainder)
+          end
+        | trans_stms vars vartypes ls (A.While(e, s)::stms) =
+          let
+            val head = Label.new ()
+            val tail = Label.new ()
+            val strans = trans_stms vars vartypes (SOME(head,tail)) s
+            val remainder = trans_stms vars vartypes ls stms
+          in
+            (T.LABEL head
+            :: T.JUMPIFN(trans_exp vars vartypes e, tail)
+            :: strans
+            @ [T.JUMP head, T.LABEL tail]
+            @ remainder)
+          end
+        | trans_stms vars vartypes ls (A.Effect(e)::stms) = (T.EFFECT (trans_exp vars vartypes e)) :: (trans_stms vars vartypes ls stms)
+        | trans_stms vars vartypes (SOME(b,e)) (A.Break::stms) =
+          let
+            val remainder = trans_stms vars vartypes (SOME(b,e)) stms
+          in
+            ((T.JUMP e) :: remainder)
+          end
+        | trans_stms vars vartypes  NONE       (A.Break::_) = raise ErrorMsg.InternalError "Break from invalid location... should have been caught in typechecker"
+        | trans_stms vars vartypes (SOME(b,e)) (A.Continue::stms) =
+          let
+            val remainder = trans_stms vars vartypes (SOME(b,e)) stms
+          in
+            ((T.JUMP b) :: remainder)
+          end
+        | trans_stms vars vartypes  NONE       (A.Continue::_) = raise ErrorMsg.InternalError "Continue from invalid location... should have been caught in typechecker"
+        | trans_stms vars vartypes ls (A.Nop::stms) = trans_stms vars vartypes ls stms
+        | trans_stms vars vartypes ls (A.MarkedStm m :: stms) = trans_stms vars vartypes ls ((Mark.data m) :: stms)
+        | trans_stms vars vartypes _ nil = nil

 
 

-  fun translate p = let val (trans, _) = trans_stms Symbol.empty NONE p in trans end
+      fun trans_funcs ((id, A.Extern(_, _))::l) = trans_funcs l
+        | trans_funcs ((id, A.MarkedFunction a)::l) = trans_funcs ((id, Mark.data a)::l)
+        | trans_funcs ((id, A.Function(t, args, vars, body))::l) =
+            let
+              val allvars = foldr
+                              (fn ((name, t),b) =>
+                                Symbol.bind b (name, Temp.new (Symbol.name(name)) (Temp.sts (Type.size t))))
+                              Symbol.empty
+                              (args @ vars)
+              val vartypes = foldr (fn ((i, t), b) => Symbol.bind b (i, t)) Symbol.empty (args @ vars)
+              val b = trans_stms allvars vartypes NONE body
+              val (argn,_) = ListPair.unzip args
+              val numberedargs = ListPair.zip (List.tabulate (length argn, fn x => x), argn)
+              val argmv = map
+                (fn (n, argname) => T.MOVE(T.TEMP (Symbol.look' allvars argname), T.ARG (n, Temp.size (Symbol.look' allvars argname))))
+                numberedargs
+            in
+              (T.FUNCTION(id, argmv @ b)) :: (trans_funcs l)
+            end
+        | trans_funcs nil = nil

 
 

+    in
+      trans_funcs funclist
+    end

 end
 end