diff --git a/ocaml/parser/common.ml b/ocaml/parser/common.ml
index 36cd03b..228f671 100644
--- a/ocaml/parser/common.ml
+++ b/ocaml/parser/common.ml
@@ -24,12 +24,13 @@ let rec string_of_type typ =
   | Char -> "char"
   | Uchar -> "unsigned char"
   | Int -> "int"
+  | Uint -> "unsigned int"
   | Long -> "long"
   | Ulong -> "unsigned long"
   | Llong -> "long long"
   | Ullong -> "unsigned long long"
-  | Sint w -> "int" ^ string_of_int w
-  | Uint w -> "uint" ^ string_of_int w
+  | Sword w -> "int" ^ string_of_int w
+  | Uword w -> "uint" ^ string_of_int w
   | Const t -> "const " ^ string_of_type t
   | Pointer t -> (string_of_type t) ^ " * "
   | Vector (d, t) -> "vector[" ^ Z.to_string d ^ "] " ^ string_of_type t
@@ -63,10 +64,10 @@ let string_of_instr instr =
   | Or (l, r0, r1) -> l ^ " = " ^ r0 ^ " | " ^ string_of_operand r1
   | Rshift (l, r0, r1) -> l ^ " = " ^ r0 ^ " >> " ^ string_of_operand r1
   | Lshift (l, r0, r1) -> l ^ " = " ^ r0 ^ " << " ^ string_of_operand r1
-  | Load (l, loc) -> l ^ " = MEM[" ^ (string_of_loc loc) ^ "]"
-  | Store (loc, r) -> "MEM[" ^ (string_of_loc loc) ^ "] = " ^ r
-  | Vstore (t, loc, r) -> "MEM <" ^ string_of_type t ^ "> [" ^ string_of_loc loc ^
-                            "] = " ^ r
+  | Load (l, t, loc) -> l ^ " = MEM <" ^ string_of_type t ^ "> [" ^
+                          string_of_loc loc ^ "]"
+  | Store (loc, t, r) -> "MEM <" ^ string_of_type t ^ "> [" ^
+                           string_of_loc loc ^ "] = " ^ r
   | Return -> "return"
   | Wmadd (l, r0, r1, r2) -> l ^ " = WIDEN_MULT_PLUS_EXPR <" ^ r0 ^ ", " ^ r1 ^ ", " ^ r2
   
diff --git a/ocaml/parser/gimpleLexer.mll b/ocaml/parser/gimpleLexer.mll
index 40c8a57..b0961d2 100644
--- a/ocaml/parser/gimpleLexer.mll
+++ b/ocaml/parser/gimpleLexer.mll
@@ -12,6 +12,7 @@
               "char"                       , CHAR;
               "int"                        , INT;
               "const"                      , CONST;
+              "signed"                     , SIGNED;
               "unsigned"                   , UNSIGNED;
               "long"                       , LONG;
               "vector"                     , VECTOR;
diff --git a/ocaml/parser/gimpleParser.mly b/ocaml/parser/gimpleParser.mly
index 5402cf3..574b606 100644
--- a/ocaml/parser/gimpleParser.mly
+++ b/ocaml/parser/gimpleParser.mly
@@ -20,7 +20,7 @@
 %token ADDOP SUBOP MULOP WMULOP ANDOP OROP XOROP LSHIFT RSHIFT EQOP
 %token WMADDOP
 /* Types */
-%token CONST VOID CHAR INT UNSIGNED LONG VECTOR
+%token CONST VOID CHAR INT SIGNED UNSIGNED LONG VECTOR
 /* Others */
 %token ATTRIBUTE ACCESS MEM EOF RETURN LOCAL COUNT BB
 
@@ -41,6 +41,8 @@ funcs:
 func:
   attribute typ ID LPAREN parameters RPAREN LBRACK vars instrs RBRACK
     { { attr = $1; fty = $2; fname = $3; params = $5; vars = $8; instrs = $9 } }
+| typ ID LPAREN parameters RPAREN LBRACK vars instrs RBRACK
+    { { attr = []; fty = $1; fname = $2; params = $4; vars = $7; instrs = $8 } }
 ;
 
 attribute:
@@ -50,9 +52,9 @@ attribute:
 
 direct_typ:
   VOID                                            { Void }
-| SINT                                            { Sint $1 }
-| UINT                                            { Uint $1 }
-| UNSIGNED SINT                                   { Uint $2 }
+| SINT                                            { Sword $1 }
+| UINT                                            { Uword $1 }
+| UNSIGNED SINT                                   { Uword $2 }
 | CONST direct_typ                                { Const $2 }
 ;
 
@@ -87,13 +89,16 @@ var:
 
 vtyp:
 | UNSIGNED CHAR                                   { Uchar }
+| SIGNED CHAR                                     { Char }
 | INT                                             { Int }
+| UNSIGNED INT                                    { Uint }
+| SIGNED INT                                      { Int }
 | LONG LONG UNSIGNED INT                          { Ullong }
 | LONG LONG INT                                   { Llong }
 | UNSIGNED LONG                                   { Ulong }
-| UINT                                            { Uint $1 }
-| SINT                                            { Sint $1 }
-| SINT UNSIGNED                                   { Uint $1 }
+| UINT                                            { Uword $1 }
+| SINT                                            { Sword $1 }
+| SINT UNSIGNED                                   { Uword $1 }
 | VECTOR LPAREN NUM RPAREN vtyp                   { Vector ($3, $5) }
 ;
 
@@ -122,12 +127,14 @@ instr:
 | ID EQOP ID LSHIFT ID SEMICOLON                  { Lshift ($1, $3, Var $5) }
 | ID EQOP ID LSHIFT NUM SEMICOLON                 { Lshift ($1, $3, Const $5) }
 | LANGLE BB NUM RANGLE LSQUARE LOCAL COUNT COLON NUM RSQUARE COLON  { Label $3 }
-| ID EQOP MULOP loc SEMICOLON                     { Load ($1, $4) }
-| ID EQOP MEM LSQUARE loc RSQUARE SEMICOLON       { Load ($1, $5) }
-| MULOP loc EQOP ID SEMICOLON                     { Store ($2, $4) }
-| MEM LSQUARE loc RSQUARE EQOP ID SEMICOLON       { Store ($3, $6) }
+| ID EQOP MULOP loc SEMICOLON                     { Load ($1, Void, $4) }
+| ID EQOP MEM LSQUARE loc RSQUARE SEMICOLON       { Load ($1, Void, $5) }
+| ID EQOP MEM LANGLE vtyp RANGLE LSQUARE loc RSQUARE SEMICOLON
+                                                  { Load ($1, $5, $8) }
+| MULOP loc EQOP ID SEMICOLON                     { Store ($2, Void, $4) }
+| MEM LSQUARE loc RSQUARE EQOP ID SEMICOLON       { Store ($3, Void, $6) }
 | MEM LANGLE vtyp RANGLE LSQUARE loc RSQUARE EQOP ID SEMICOLON
-                                                  { Vstore ($3, $6, $9) }
+                                                  { Store ($6, $3, $9) }
 | ID EQOP WMADDOP LANGLE ID COMMA ID COMMA ID RANGLE SEMICOLON
                                                   { Wmadd ($1, $5, $7, $9) }
 | RETURN SEMICOLON                                { Return }
diff --git a/ocaml/parser/syntax.ml b/ocaml/parser/syntax.ml
index 9db5342..01fc231 100644
--- a/ocaml/parser/syntax.ml
+++ b/ocaml/parser/syntax.ml
@@ -3,8 +3,8 @@ type access_t = string
 
 type attribute_t = access_t list
 
-type type_t = Void | Char | Uchar | Int | Long | Ulong | Llong | Ullong
-              | Sint of int | Uint of int 
+type type_t = Void | Char | Uchar | Int | Uint | Long | Ulong | Llong | Ullong
+              | Sword of int | Uword of int 
               | Const of type_t | Pointer of type_t
               | Vector of Z.t * type_t
 
@@ -29,9 +29,8 @@ type instr_t = Label of Z.t
              | Or of id_t * id_t * operand_t
              | Rshift of id_t * id_t * operand_t
              | Lshift of id_t * id_t * operand_t
-             | Load of id_t * loc_t
-             | Store of loc_t * id_t
-             | Vstore of type_t * loc_t * id_t
+             | Load of id_t * type_t * loc_t
+             | Store of loc_t * type_t * id_t
              | Return
              | Wmadd of id_t * id_t * id_t * id_t
 
diff --git a/ocaml/parser/syntax.mli b/ocaml/parser/syntax.mli
index aa36ace..b7a6b78 100644
--- a/ocaml/parser/syntax.mli
+++ b/ocaml/parser/syntax.mli
@@ -3,8 +3,8 @@ type access_t = string
 
 type attribute_t = access_t list
 
-type type_t = Void | Char | Uchar | Int | Long | Ulong | Llong | Ullong
-              | Sint of int | Uint of int
+type type_t = Void | Char | Uchar | Int | Uint | Long | Ulong | Llong | Ullong
+              | Sword of int | Uword of int
               | Const of type_t | Pointer of type_t
               | Vector of Z.t * type_t
 
@@ -29,9 +29,8 @@ type instr_t = Label of Z.t
              | Or of id_t * id_t * operand_t
              | Rshift of id_t * id_t * operand_t
              | Lshift of id_t * id_t * operand_t
-             | Load of id_t * loc_t
-             | Store of loc_t * id_t
-             | Vstore of type_t * loc_t * id_t
+             | Load of id_t * type_t * loc_t
+             | Store of loc_t * type_t * id_t
              | Return
              | Wmadd of id_t * id_t * id_t * id_t