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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/byte-code.h
+7 -12
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@@ -582,6 +582,8 @@
VM_OC_BRANCH_IF_NULLISH) \
\
/* Basic opcodes. */ \
CBC_OPCODE (CBC_EXT_CREATE_ARGUMENTS, CBC_HAS_LITERAL_ARG, 0, \
VM_OC_CREATE_ARGUMENTS) \
CBC_OPCODE (CBC_EXT_PUSH_LITERAL_PUSH_NUMBER_0, CBC_HAS_LITERAL_ARG, 2, \
VM_OC_PUSH_LIT_0 | VM_OC_GET_LITERAL) \
CBC_OPCODE (CBC_EXT_PUSH_LITERAL_PUSH_NUMBER_POS_BYTE, CBC_HAS_LITERAL_ARG | CBC_HAS_BYTE_ARG, 2, \
@@ -866,12 +868,11 @@ typedef enum
CBC_CODE_FLAGS_UINT16_ARGUMENTS = (1u << 1), /**< compiled code data is cbc_uint16_arguments_t */
CBC_CODE_FLAGS_STRICT_MODE = (1u << 2), /**< strict mode is enabled */
CBC_CODE_FLAGS_MAPPED_ARGUMENTS_NEEDED = (1u << 3), /**< mapped arguments object must be constructed */
CBC_CODE_FLAGS_UNMAPPED_ARGUMENTS_NEEDED = (1u << 4), /**< mapped arguments object must be constructed */
CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED = (1u << 5), /**< no need to create a lexical environment */
CBC_CODE_FLAGS_STATIC_FUNCTION = (1u << 6), /**< this function is a static snapshot function */
CBC_CODE_FLAGS_DEBUGGER_IGNORE = (1u << 7), /**< this function should be ignored by debugger */
CBC_CODE_FLAGS_HAS_TAGGED_LITERALS = (1u << 8), /**< this function has tagged template literal list */
CBC_CODE_FLAGS_LEXICAL_BLOCK_NEEDED = (1u << 9), /**< compiled code needs a lexical block */
CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED = (1u << 4), /**< no need to create a lexical environment */
CBC_CODE_FLAGS_STATIC_FUNCTION = (1u << 5), /**< this function is a static snapshot function */
CBC_CODE_FLAGS_DEBUGGER_IGNORE = (1u << 6), /**< this function should be ignored by debugger */
CBC_CODE_FLAGS_HAS_TAGGED_LITERALS = (1u << 7), /**< this function has tagged template literal list */
CBC_CODE_FLAGS_LEXICAL_BLOCK_NEEDED = (1u << 8), /**< compiled code needs a lexical block */
/* Bits from bit 12 is reserved for function types (see CBC_FUNCTION_TYPE_SHIFT).
* Note: the last bits are used for type flags because < and >= operators can be used to
@@ -943,12 +944,6 @@ typedef enum
#define CBC_FUNCTION_IS_ARROW(flags) \
((flags) >= (CBC_FUNCTION_ARROW << CBC_FUNCTION_TYPE_SHIFT))
/**
* Any arguments object is needed
*/
#define CBC_CODE_FLAGS_IS_ARGUMENTS_NEEDED \
(CBC_CODE_FLAGS_MAPPED_ARGUMENTS_NEEDED | CBC_CODE_FLAGS_UNMAPPED_ARGUMENTS_NEEDED)
#define CBC_OPCODE(arg1, arg2, arg3, arg4) arg1,
/**