Performance optimizations

* inline some hot function
 * add 'ecma_copy_value_if_not_object' similer to 'ecma_value_free_if_not_object'
 * remove unnecessary helpers
 * improve 'do_number_bitwise_logic'

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

jerry-core/ecma/base/ecma-helpers-conversion.c

@@ -1,4 +1,5 @@
 /* Copyright 2014-2016 Samsung Electronics Co., Ltd.
+ * Copyright 2016 University of Szeged.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -810,28 +811,6 @@ ecma_uint32_to_utf8_string (uint32_t value, /**< value to convert */
   return bytes_copied;
 } /* ecma_uint32_to_utf8_string */
 
-/**
- * ECMA-defined conversion of UInt32 value to Number value
- *
- * @return number - result of conversion.
- */
-ecma_number_t
-ecma_uint32_to_number (uint32_t value) /**< unsigned 32-bit integer value */
-{
-  return (ecma_number_t) value;
-} /* ecma_uint32_to_number */
-
-/**
- * ECMA-defined conversion of Int32 value to Number value
- *
- * @return number - result of conversion.
- */
-ecma_number_t
-ecma_int32_to_number (int32_t value) /**< signed 32-bit integer value */
-{
-  return (ecma_number_t) value;
-} /* ecma_int32_to_number */
-
 /**
  * ECMA-defined conversion of Number value to UInt32 value
  *
@@ -1344,7 +1323,8 @@ ecma_number_to_utf8_string (ecma_number_t num, /**< ecma-number */
 
       // 5.
       uint32_t num_uint32 = ecma_number_to_uint32 (num);
-      if (ecma_uint32_to_number (num_uint32) == num)
+
+      if (((ecma_number_t) num_uint32) == num)
       {
         size = ecma_uint32_to_utf8_string (num_uint32, dst_p, buffer_size);
       }