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Implement proper arguments support (#4289)

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- Store arguments in a register when possible
- Create separate arguments object for function argument initializer when necessary

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-10-16 11:02:36 +02:00
committed by GitHub
parent 650269feca
commit 841d536fce
16 changed files with 647 additions and 179 deletions
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jerry-core/parser/js/js-scanner-internal.h
+15 -7
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@@ -205,6 +205,11 @@ typedef enum
*/
#define SCANNER_LITERAL_IS_LOCAL (SCANNER_LITERAL_IS_LET | SCANNER_LITERAL_IS_CONST)
/**
* Literal is a local function declaration
*/
#define SCANNER_LITERAL_IS_LOCAL_FUNC (SCANNER_LITERAL_IS_FUNC | SCANNER_LITERAL_IS_FUNC_DECLARATION)
/**
* For statement descriptor.
*/
@@ -281,20 +286,23 @@ typedef enum
#endif /* ENABLED (JERRY_ESNEXT) */
SCANNER_LITERAL_POOL_IS_STRICT = (1 << 3), /**< literal pool represents a strict mode code block */
SCANNER_LITERAL_POOL_CAN_EVAL = (1 << 4), /**< prepare for executing eval in this block */
SCANNER_LITERAL_POOL_NO_ARGUMENTS = (1 << 5), /**< arguments object must not be constructed */
SCANNER_LITERAL_POOL_NO_ARGUMENTS = (1 << 5), /**< arguments object must not be constructed,
* or arguments cannot be stored in registers if
* SCANNER_LITERAL_POOL_ARGUMENTS_IN_ARGS is set */
#if ENABLED (JERRY_ESNEXT)
SCANNER_LITERAL_POOL_HAS_COMPLEX_ARGUMENT = (1 << 6), /**< function has complex (ES2015+) argument definition */
SCANNER_LITERAL_POOL_ARGUMENTS_IN_ARGS = (1 << 6), /**< arguments is referenced in function args */
SCANNER_LITERAL_POOL_HAS_COMPLEX_ARGUMENT = (1 << 7), /**< function has complex (ES2015+) argument definition */
#endif /* ENABLED (JERRY_ESNEXT) */
SCANNER_LITERAL_POOL_IN_WITH = (1 << 7), /**< literal pool is in a with statement */
SCANNER_LITERAL_POOL_IN_WITH = (1 << 8), /**< literal pool is in a with statement */
#if ENABLED (JERRY_ESNEXT)
SCANNER_LITERAL_POOL_FUNCTION_STATEMENT = (1 << 8), /**< function statement */
SCANNER_LITERAL_POOL_ARROW = (1 << 9), /**< arrow function */
SCANNER_LITERAL_POOL_GENERATOR = (1 << 10), /**< generator function */
SCANNER_LITERAL_POOL_ASYNC = (1 << 11), /**< async function */
SCANNER_LITERAL_POOL_HAS_SUPER_REFERENCE = (1 << 12), /**< function body contains super reference */
SCANNER_LITERAL_POOL_FUNCTION_STATEMENT = (1 << 12), /**< function statement */
SCANNER_LITERAL_POOL_HAS_SUPER_REFERENCE = (1 << 13), /**< function body contains super reference */
#endif /* ENABLED (JERRY_ESNEXT) */
#if ENABLED (JERRY_MODULE_SYSTEM)
SCANNER_LITERAL_POOL_IN_EXPORT = (1 << 13), /**< the declared variables are exported by the module system */
SCANNER_LITERAL_POOL_IN_EXPORT = (1 << 14), /**< the declared variables are exported by the module system */
#endif /* ENABLED (JERRY_MODULE_SYSTEM) */
} scanner_literal_pool_flags_t;
@@ -396,9 +404,9 @@ scanner_literal_pool_t *scanner_push_literal_pool (parser_context_t *context_p,
uint16_t status_flags);
void scanner_pop_literal_pool (parser_context_t *context_p, scanner_context_t *scanner_context_p);
#if ENABLED (JERRY_ESNEXT)
void scanner_filter_arguments (parser_context_t *context_p, scanner_context_t *scanner_context_p);
void scanner_construct_global_block (parser_context_t *context_p, scanner_context_t *scanner_context_p);
#endif /* ENABLED (JERRY_ESNEXT) */
void scanner_filter_arguments (parser_context_t *context_p, scanner_context_t *scanner_context_p);
lexer_lit_location_t *scanner_add_custom_literal (parser_context_t *context_p, scanner_literal_pool_t *literal_pool_p,
const lexer_lit_location_t *literal_location_p);
lexer_lit_location_t *scanner_add_literal (parser_context_t *context_p, scanner_context_t *scanner_context_p);