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Introduce integer ecma-value representation to reduce the double allocations.

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JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2016-05-17 00:11:05 -07:00
parent 7cf8b79429
commit 00f759e275
32 changed files with 759 additions and 588 deletions
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jerry-core/ecma/base/ecma-globals.h
+55 -6
View File
@@ -55,8 +55,8 @@
*/
typedef enum
{
ECMA_TYPE_SIMPLE, /**< simple value */
ECMA_TYPE_NUMBER, /**< 64-bit integer */
ECMA_TYPE_DIRECT, /**< directly encoded value, a 28 bit signed integer or a simple value */
ECMA_TYPE_FLOAT, /**< pointer to a 64 or 32 bit floating point number */
ECMA_TYPE_STRING, /**< pointer to description of a string */
ECMA_TYPE_OBJECT, /**< pointer to description of an object */
ECMA_TYPE___MAX = ECMA_TYPE_OBJECT /** highest value for ecma types */
@@ -68,10 +68,10 @@ typedef enum
typedef enum
{
/**
* Empty value is implementation defined value, used for:
* - representing empty value in completion values (see also: ECMA-262 v5, 8.9 Completion specification type);
* - values of uninitialized immutable bindings;
* - values of empty register variables.
* Empty value is implementation defined value, used for representing:
* - empty (uninitialized) values
* - immutable binding values
* - special register or stack values for vm
*/
ECMA_SIMPLE_VALUE_EMPTY,
ECMA_SIMPLE_VALUE_UNDEFINED, /**< undefined value */
@@ -90,6 +90,11 @@ typedef enum
*/
typedef uint32_t ecma_value_t;
/**
* Type for directly encoded integer numbers in JerryScript.
*/
typedef int32_t ecma_integer_value_t;
#if UINTPTR_MAX <= UINT32_MAX
/**
@@ -114,6 +119,50 @@ typedef uint32_t ecma_value_t;
*/
#define ECMA_VALUE_SHIFT 3
/**
* Mask for directly encoded values
*/
#define ECMA_DIRECT_TYPE_MASK ((1u << ECMA_VALUE_SHIFT) | ECMA_VALUE_TYPE_MASK)
/**
* Ecma integer value type
*/
#define ECMA_DIRECT_TYPE_INTEGER_VALUE ((0u << ECMA_VALUE_SHIFT) | ECMA_TYPE_DIRECT)
/**
* Ecma simple value type
*/
#define ECMA_DIRECT_TYPE_SIMPLE_VALUE ((1u << ECMA_VALUE_SHIFT) | ECMA_TYPE_DIRECT)
/**
* Shift for directly encoded values in ecma_value_t
*/
#define ECMA_DIRECT_SHIFT 4
/**
* Maximum integer number for an ecma value
*/
#if CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32
#define ECMA_INTEGER_NUMBER_MAX 0x7fffff
#else /* CONFIG_ECMA_NUMBER_TYPE != CONFIG_ECMA_NUMBER_FLOAT32 */
#define ECMA_INTEGER_NUMBER_MAX 0x7ffffff
#endif /* CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32 */
/**
* Minimum integer number for an ecma value
*/
#if CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32
#define ECMA_INTEGER_NUMBER_MIN -0x7fffff
#else /* CONFIG_ECMA_NUMBER_TYPE != CONFIG_ECMA_NUMBER_FLOAT32 */
#define ECMA_INTEGER_NUMBER_MIN -0x8000000
#endif /* CONFIG_ECMA_NUMBER_TYPE == CONFIG_ECMA_NUMBER_FLOAT32 */
/**
* Checks whether the integer number is in the integer number range.
*/
#define ECMA_IS_INTEGER_NUMBER(num) \
(ECMA_INTEGER_NUMBER_MIN <= (num) && (num) <= ECMA_INTEGER_NUMBER_MAX)
/**
* Internal properties' identifiers.
*/