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Tracking variables to reduce the memory consumption of scope chain. (#1819)

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Currently we keep all local variables in the scope chain as long as
a nested function is alive. These variables consume memory although
several of them are never used. This patch focuses on removing those
unused ones whose can be detected at parsing time.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2017-05-15 09:00:57 +02:00
committed by GitHub
parent 8143a0cc10
commit f5b385ca6c
7 changed files with 168 additions and 44 deletions
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jerry-core/parser/js/js-parser-internal.h
+1 -1
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@@ -399,7 +399,7 @@ void lexer_expect_object_literal_id (parser_context_t *context_p, bool must_be_i
void lexer_construct_literal_object (parser_context_t *context_p, lexer_lit_location_t *literal_p,
uint8_t literal_type);
bool lexer_construct_number_object (parser_context_t *context_p, bool push_number_allowed, bool is_negative_number);
void lexer_construct_function_object (parser_context_t *context_p, uint32_t extra_status_flags);
uint16_t lexer_construct_function_object (parser_context_t *context_p, uint32_t extra_status_flags);
void lexer_construct_regexp_object (parser_context_t *context_p, bool parse_only);
bool lexer_compare_identifier_to_current (parser_context_t *context_p, const lexer_lit_location_t *right);