Parser optimizations.

- parser is now non-recursive (i.e. parse function is not called recursively in any case);
 - byte-code is now more compact:
    - constants are now not immediately dumped upon occurence, but later - where necessary;
    - assignments are combined with unary / binary operations;
    - binary operations are encoded more compactly in many cases;
 - byte-code arrays are now allocated separately for each scope (so, GC of the scopes now becomes possible);
 - byte-code is dumped directly into corresponding byte-code arrays:
   - linked lists of op_meta are not now used for main code of a scope.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
JerryScript-DCO-1.0-Signed-off-by: Andrey Shitov a.shitov@samsung.com

jerry-core/ecma/operations/ecma-eval.cpp

@@ -13,6 +13,7 @@
  * limitations under the License.
  */
 
+#include "bytecode-data.h"
 #include "ecma-builtins.h"
 #include "ecma-exceptions.h"
 #include "ecma-eval.h"
@@ -21,7 +22,6 @@
 #include "ecma-helpers.h"
 #include "ecma-lex-env.h"
 #include "parser.h"
-#include "serializer.h"
 #include "vm.h"
 
 /** \addtogroup ecma ECMA
@@ -114,7 +114,7 @@ ecma_op_eval_chars_buffer (const jerry_api_char_t *code_p, /**< code characters
 
     if (!code_contains_functions)
     {
-      serializer_remove_bytecode_data (bytecode_data_p);
+      bc_remove_bytecode_data (bytecode_data_p);
     }
   }