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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/ecma/operations/ecma-arguments-object.c
+8 -15
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@@ -37,13 +37,16 @@
* Arguments object creation operation.
*
* See also: ECMA-262 v5, 10.6
*
* @return ecma value of arguments object
* Returned value must be freed with ecma_free_value
*/
void
ecma_op_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function */
ecma_object_t *lex_env_p, /**< lexical environment the Arguments
ecma_value_t
ecma_op_create_arguments_object (vm_frame_ctx_shared_args_t *shared_p, /**< shared context data */
ecma_object_t *lex_env_p) /**< lexical environment the Arguments
* object is created for */
vm_frame_ctx_shared_args_t *shared_p) /**< shared context data */
{
ecma_object_t *func_obj_p = shared_p->function_object_p;
const ecma_compiled_code_t *bytecode_data_p = shared_p->header.bytecode_header_p;
uint16_t formal_params_number;
@@ -136,17 +139,7 @@ ecma_op_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function
}
}
uint8_t prop_flags = ((bytecode_data_p->status_flags & CBC_CODE_FLAGS_STRICT_MODE) ? ECMA_PROPERTY_FIXED
: ECMA_PROPERTY_FLAG_WRITABLE);
ecma_property_value_t *prop_value_p;
prop_value_p = ecma_create_named_data_property (lex_env_p,
ecma_get_magic_string (LIT_MAGIC_STRING_ARGUMENTS),
prop_flags,
NULL);
prop_value_p->value = ecma_make_object_value (obj_p);
ecma_deref_object (obj_p);
return ecma_make_object_value (obj_p);
} /* ecma_op_create_arguments_object */
/**