diff --git a/jerry-core/api/jerry_literal_cache.h b/jerry-core/api/jerry_literal_cache.h
new file mode 100755
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/jerry-core/ecma/base/ecma-helpers-string.c b/jerry-core/ecma/base/ecma-helpers-string.c
old mode 100644
new mode 100755
index 4c94038d20babe6eef4926e4eb72a82383430973..87d9b8cecaaa34cd021dff14c343c794d1d88f9b
--- a/jerry-core/ecma/base/ecma-helpers-string.c
+++ b/jerry-core/ecma/base/ecma-helpers-string.c
@@ -1662,19 +1662,20 @@ ecma_compare_ecma_strings_longpath (const ecma_string_t *string1_p, /**< ecma-st
   const lit_utf8_byte_t *utf8_string1_p, *utf8_string2_p;
   lit_utf8_size_t utf8_string1_size, utf8_string2_size;
 
-  if (JERRY_LIKELY (ECMA_STRING_GET_CONTAINER (string1_p) == ECMA_STRING_CONTAINER_HEAP_ASCII_STRING))
-  {
-    utf8_string1_p = ECMA_ASCII_STRING_GET_BUFFER (string1_p);
-    utf8_string1_size = ((ecma_ascii_string_t *) string1_p)->size;
-    utf8_string2_p = ECMA_ASCII_STRING_GET_BUFFER (string2_p);
-    utf8_string2_size = ((ecma_ascii_string_t *) string2_p)->size;
-  }
-  else if (ECMA_STRING_GET_CONTAINER (string1_p) == ECMA_STRING_CONTAINER_HEAP_UTF8_STRING)
+  if (JERRY_LIKELY (ECMA_STRING_GET_CONTAINER (string1_p) == ECMA_STRING_CONTAINER_HEAP_UTF8_STRING))
   {
     utf8_string1_p = ECMA_UTF8_STRING_GET_BUFFER (string1_p);
     utf8_string1_size = ((ecma_utf8_string_t *) string1_p)->size;
     utf8_string2_p = ECMA_UTF8_STRING_GET_BUFFER (string2_p);
     utf8_string2_size = ((ecma_utf8_string_t *) string2_p)->size;
+
+  }
+  else if (ECMA_STRING_GET_CONTAINER(string1_p) == ECMA_STRING_CONTAINER_HEAP_ASCII_STRING)
+  {
+    utf8_string1_p = ECMA_ASCII_STRING_GET_BUFFER (string1_p);
+    utf8_string1_size = ((ecma_ascii_string_t *) string1_p)->size;
+    utf8_string2_p = ECMA_ASCII_STRING_GET_BUFFER (string2_p);
+    utf8_string2_size = ((ecma_ascii_string_t *) string2_p)->size;
   }
   else
   {
diff --git a/jerry-core/ecma/base/ecma-literal-storage.c b/jerry-core/ecma/base/ecma-literal-storage.c
old mode 100644
new mode 100755
index e4dc58ce3d4e6a6e34e1b350f0ddecadf3f9bbc2..1e2b8f466ed2685db036baaecd03a1be74f30d0b
--- a/jerry-core/ecma/base/ecma-literal-storage.c
+++ b/jerry-core/ecma/base/ecma-literal-storage.c
@@ -17,6 +17,20 @@
 #include "ecma-literal-storage.h"
 #include "ecma-helpers.h"
 #include "jcontext.h"
+#include "jerry_literal_cache.h"
+
+__weak void InitJerryLiteralCache(void) {}
+
+__weak void ClearJerryLiteralCache(void) {}
+
+__weak void AddJerryLiteralCache(int32_t hash, void *p) {}
+
+__weak void DelJerryLiteralCache(int32_t hash) {}
+
+__weak void *GetJerryLiteralCache(int32_t hash)
+{
+  return (void*)UINT32_MAX;
+}
 
 /** \addtogroup ecma ECMA
  * @{
@@ -73,6 +87,7 @@ ecma_free_string_list (jmem_cpointer_t string_list_cp) /**< string list */
                                                                 string_list_p->values[i]);
 
         JERRY_ASSERT (ECMA_STRING_IS_REF_EQUALS_TO_ONE (string_p));
+        DelJerryLiteralCache(string_p->u.hash);
         ecma_destroy_ecma_string (string_p);
       }
     }
@@ -138,6 +153,14 @@ ecma_find_or_create_literal_string (const lit_utf8_byte_t *chars_p, /**< string
     return ecma_make_string_value (string_p);
   }
 
+  ecma_string_t *cached_literal = (ecma_string_t *)GetJerryLiteralCache(string_p->u.hash);
+  if ((cached_literal != NULL) && (cached_literal != (void*)UINT32_MAX)) {
+    if (ecma_compare_ecma_strings (string_p, cached_literal)) {
+       ecma_deref_ecma_string (string_p);
+       return ecma_make_string_value (cached_literal);
+    }
+  }
+
   jmem_cpointer_t string_list_cp = JERRY_CONTEXT (string_list_first_cp);
   jmem_cpointer_t *empty_cpointer_p = NULL;
 
@@ -153,8 +176,12 @@ ecma_find_or_create_literal_string (const lit_utf8_byte_t *chars_p, /**< string
         {
           empty_cpointer_p = string_list_p->values + i;
         }
+
+        if ((cached_literal == NULL) && empty_cpointer_p != NULL) {
+          break;
+        }
       }
-      else
+      else if (cached_literal != NULL)
       {
         ecma_string_t *value_p = JMEM_CP_GET_NON_NULL_POINTER (ecma_string_t,
                                                                string_list_p->values[i]);
@@ -168,6 +195,9 @@ ecma_find_or_create_literal_string (const lit_utf8_byte_t *chars_p, /**< string
       }
     }
 
+    if ((cached_literal == NULL) && (empty_cpointer_p != NULL)) {
+      break;
+    }
     string_list_cp = string_list_p->next_cp;
   }
 
@@ -178,6 +208,7 @@ ecma_find_or_create_literal_string (const lit_utf8_byte_t *chars_p, /**< string
   if (empty_cpointer_p != NULL)
   {
     *empty_cpointer_p = result;
+    AddJerryLiteralCache(string_p->u.hash, string_p);
     return ecma_make_string_value (string_p);
   }
 
@@ -193,6 +224,7 @@ ecma_find_or_create_literal_string (const lit_utf8_byte_t *chars_p, /**< string
   new_item_p->next_cp = JERRY_CONTEXT (string_list_first_cp);
   JMEM_CP_SET_NON_NULL_POINTER (JERRY_CONTEXT (string_list_first_cp), new_item_p);
 
+  AddJerryLiteralCache(string_p->u.hash, string_p);
   return ecma_make_string_value (string_p);
 } /* ecma_find_or_create_literal_string */
 
diff --git a/jerry-core/ecma/base/ecma-literal-storage.h b/jerry-core/ecma/base/ecma-literal-storage.h
index debbcc50a89c5c9af0580d95f27fdce77a7a11c8..809486caf5140f863f2ec9f2cd5e26a4538536be 100644
--- a/jerry-core/ecma/base/ecma-literal-storage.h
+++ b/jerry-core/ecma/base/ecma-literal-storage.h
@@ -20,6 +20,10 @@
 #include "jmem.h"
 #include "lit-globals.h"
 
+#ifndef __weak
+#define __weak			__attribute__((weak))
+#endif
+
 /** \addtogroup ecma ECMA
  * @{
  *