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Storing Number as UInt32 in ecma-string if the Number may be represented as UInt32. Calculating length for Number-represented ecma-strings in ecma-string constructor. loop_arithmetics_1kk.js: 2.9112 -> 2.8536.

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This commit is contained in:
Ruben Ayrapetyan
2014-08-25 19:58:55 +04:00
parent 57965bf160
commit 8998189bc0
4 changed files with 105 additions and 104 deletions
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src/libecmaobjects/ecma-globals.h
+12 -6
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@@ -536,11 +536,14 @@ typedef struct
*/
typedef enum
{
ECMA_STRING_CONTAINER_LIT_TABLE, /**< actual data is in literal table */
ECMA_STRING_CONTAINER_HEAP_CHUNKS, /**< actual data is on the heap
in a ecma_collection_chunk_t chain */
ECMA_STRING_CONTAINER_LIT_TABLE, /**< actual data is in literal table */
ECMA_STRING_CONTAINER_IN_DESCRIPTOR, /**< actual data is locally in the string's descriptor */
ECMA_STRING_CONTAINER_HEAP_NUMBER /**< actual data is on the heap as a ecma_number_t */
ECMA_STRING_CONTAINER_HEAP_NUMBER, /**< actual data is on the heap as a ecma_number_t */
ECMA_STRING_CONTAINER_CHARS_IN_DESC, /**< actual data are several characters
stored locally in the string's descriptor */
ECMA_STRING_CONTAINER_UINT32_IN_DESC /**< actual data is UInt32-represeneted Number
stored locally in the string's descriptor */
} ecma_string_container_t;
FIXME (Move to library that should define the type (libserializer /* ? */))
@@ -558,7 +561,7 @@ typedef struct
unsigned int refs : CONFIG_ECMA_REFERENCE_COUNTER_WIDTH;
/** Where the string's data is placed (ecma_string_container_t) */
unsigned int container : 2;
unsigned int container : 3;
/** Flag indicating whether the length field is valid */
unsigned int is_length_valid : 1;
@@ -580,8 +583,11 @@ typedef struct
/** Compressed pointer to an ecma_number_t */
unsigned int number_cp : ECMA_POINTER_FIELD_WIDTH;
/** Actual data if placed locally in the descriptor */
ecma_char_t chars[ sizeof (uint64_t) - sizeof (uint32_t) ];
/** Actual data placed locally in the descriptor */
ecma_char_t chars[ sizeof (uint32_t) ];
/** UInt32-represented number placed locally in the descriptor */
uint32_t uint32_number;
} u;
} ecma_string_t;