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Support caching of next method in for-of and built-in methods. (#3939)

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JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-06-26 14:47:39 +02:00
committed by GitHub
parent 264bb210c1
commit 0b404ea893
12 changed files with 150 additions and 70 deletions
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jerry-core/vm/vm.c
+45 -29
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@@ -2055,7 +2055,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
{
JERRY_ASSERT (opcode >= CBC_EXT_ITERATOR_STEP && opcode <= CBC_EXT_ITERATOR_STEP_3);
const uint8_t index = (uint8_t) (1 + (opcode - CBC_EXT_ITERATOR_STEP));
result = ecma_op_iterator_step (stack_top_p[-index]);
result = ecma_op_iterator_step (stack_top_p[-index], ECMA_VALUE_EMPTY);
if (ECMA_IS_VALUE_ERROR (result))
{
@@ -2113,7 +2113,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
while (true)
{
result = ecma_op_iterator_step (iterator);
result = ecma_op_iterator_step (iterator, ECMA_VALUE_EMPTY);
if (ECMA_IS_VALUE_ERROR (result))
{
@@ -3786,7 +3786,8 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
JERRY_ASSERT (VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth == stack_top_p);
ecma_value_t iterator = ecma_op_get_iterator (value, ECMA_VALUE_SYNC_ITERATOR, NULL);
ecma_value_t next_method;
ecma_value_t iterator = ecma_op_get_iterator (value, ECMA_VALUE_SYNC_ITERATOR, &next_method);
ecma_free_value (value);
@@ -3796,22 +3797,34 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
goto error;
}
ecma_value_t next_value = ecma_op_iterator_step (iterator);
result = ecma_op_iterator_step (iterator, next_method);
if (ECMA_IS_VALUE_ERROR (next_value))
if (ECMA_IS_VALUE_ERROR (result))
{
ecma_free_value (iterator);
result = next_value;
ecma_free_value (next_method);
goto error;
}
if (ecma_is_value_false (next_value))
if (ecma_is_value_false (result))
{
ecma_free_value (iterator);
ecma_free_value (next_method);
byte_code_p = byte_code_start_p + branch_offset;
continue;
}
ecma_value_t next_value = ecma_op_iterator_value (result);
ecma_free_value (result);
if (ECMA_IS_VALUE_ERROR (next_value))
{
result = next_value;
ecma_free_value (iterator);
ecma_free_value (next_method);
goto error;
}
branch_offset += (int32_t) (byte_code_start_p - frame_ctx_p->byte_code_start_p);
VM_PLUS_EQUAL_U16 (frame_ctx_p->context_depth, PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION);
@@ -3819,6 +3832,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
stack_top_p[-1] = VM_CREATE_CONTEXT (VM_CONTEXT_FOR_OF, branch_offset) | VM_CONTEXT_CLOSE_ITERATOR;
stack_top_p[-2] = next_value;
stack_top_p[-3] = iterator;
stack_top_p[-4] = next_method;
if (byte_code_p[0] == CBC_EXT_OPCODE && byte_code_p[1] == CBC_EXT_CLONE_CONTEXT)
{
@@ -3832,22 +3846,33 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
ecma_value_t *context_top_p = VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth;
JERRY_ASSERT (VM_GET_CONTEXT_TYPE (context_top_p[-1]) == VM_CONTEXT_FOR_OF);
ecma_value_t next_value = ecma_op_iterator_value (context_top_p[-2]);
if (ECMA_IS_VALUE_ERROR (next_value))
{
result = next_value;
goto error;
}
*stack_top_p++ = next_value;
*stack_top_p++ = context_top_p[-2];
context_top_p[-2] = ECMA_VALUE_UNDEFINED;
continue;
}
case VM_OC_FOR_OF_HAS_NEXT:
{
JERRY_ASSERT (VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth == stack_top_p);
ecma_value_t next_value = ecma_op_iterator_step (stack_top_p[-3]);
result = ecma_op_iterator_step (stack_top_p[-3], stack_top_p[-4]);
if (ECMA_IS_VALUE_ERROR (result))
{
goto error;
}
if (ecma_is_value_false (result))
{
ecma_free_value (stack_top_p[-2]);
ecma_free_value (stack_top_p[-3]);
ecma_free_value (stack_top_p[-4]);
VM_MINUS_EQUAL_U16 (frame_ctx_p->context_depth, PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION);
stack_top_p -= PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION;
continue;
}
ecma_value_t next_value = ecma_op_iterator_value (result);
ecma_free_value (result);
if (ECMA_IS_VALUE_ERROR (next_value))
{
@@ -3855,18 +3880,9 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
goto error;
}
if (!ecma_is_value_false (next_value))
{
ecma_free_value (stack_top_p[-2]);
stack_top_p[-2] = next_value;
byte_code_p = byte_code_start_p + branch_offset;
continue;
}
ecma_free_value (stack_top_p[-2]);
ecma_free_value (stack_top_p[-3]);
VM_MINUS_EQUAL_U16 (frame_ctx_p->context_depth, PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION);
stack_top_p -= PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION;
JERRY_ASSERT (stack_top_p[-2] == ECMA_VALUE_UNDEFINED);
stack_top_p[-2] = next_value;
byte_code_p = byte_code_start_p + branch_offset;
continue;
}
#endif /* ENABLED (JERRY_ESNEXT) */