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Eliminate the allocation of spread object (#3333)

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ECMA_VALUE_SPREAD_ELEMENT can be used to represent that the next argument needs to be spreaded, therefore no allocation is needed.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2019-11-19 18:16:43 +01:00
committed by Dániel Bátyai
parent 70566a52fb
commit 830011c033
10 changed files with 49 additions and 207 deletions
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jerry-core/vm/vm.c
+9 -8
View File
@@ -31,7 +31,6 @@
#include "ecma-objects-general.h"
#include "ecma-regexp-object.h"
#include "ecma-try-catch-macro.h"
#include "ecma-spread-object.h"
#include "jcontext.h"
#include "opcodes.h"
#include "vm.h"
@@ -1581,11 +1580,10 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
case VM_OC_SUPER_CALL:
{
uint8_t arguments_list_len = *byte_code_p++;
stack_top_p -= arguments_list_len;
if (opcode >= CBC_EXT_SPREAD_SUPER_CALL)
{
ecma_collection_t *arguments_p = opfunc_spread_arguments (stack_top_p, arguments_list_len);
ecma_collection_t *arguments_p = opfunc_spread_arguments (&stack_top_p, arguments_list_len);
if (JERRY_UNLIKELY (arguments_p == NULL))
{
@@ -1596,6 +1594,10 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
stack_top_p++;
ECMA_SET_INTERNAL_VALUE_POINTER (stack_top_p[-1], arguments_p);
}
else
{
stack_top_p -= arguments_list_len;
}
frame_ctx_p->call_operation = VM_EXEC_SUPER_CALL;
frame_ctx_p->byte_code_p = byte_code_start_p;
@@ -1919,10 +1921,10 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
goto error;
}
case VM_OC_CREATE_SPREAD_OBJECT:
case VM_OC_PUSH_SPREAD_ELEMENT:
{
*stack_top_p++ = ecma_op_create_spread_object (left_value);
goto free_left_value;
*stack_top_p++ = ECMA_VALUE_SPREAD_ELEMENT;
continue;
}
case VM_OC_GET_ITERATOR:
{
@@ -2029,9 +2031,8 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
case VM_OC_SPREAD_ARGUMENTS:
{
uint8_t arguments_list_len = *byte_code_p++;
stack_top_p -= arguments_list_len;
ecma_collection_t *arguments_p = opfunc_spread_arguments (stack_top_p, arguments_list_len);
ecma_collection_t *arguments_p = opfunc_spread_arguments (&stack_top_p, arguments_list_len);
if (JERRY_UNLIKELY (arguments_p == NULL))
{