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/base/ecma-globals.h

@@ -795,6 +795,8 @@ FIXME (Move to library that should define the type (literal.h /* ? */))
 typedef rcs_record_t *literal_t;
 typedef rcs_cpointer_t lit_cpointer_t;
 
+#define NOT_A_LITERAL (lit_cpointer_t::null_cp ())
+
 /**
  * ECMA string-value descriptor
  */

jerry-core/ecma/base/ecma-helpers-string.cpp

@@ -20,6 +20,7 @@
  * @{
  */
 
+#include "bytecode-data.h"
 #include "ecma-alloc.h"
 #include "ecma-gc.h"
 #include "ecma-globals.h"
@@ -29,7 +30,6 @@
 #include "jrt-libc-includes.h"
 #include "lit-char-helpers.h"
 #include "lit-magic-strings.h"
-#include "serializer.h"
 #include "vm.h"
 
 /**