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Rework register reference in the vm. (#3370)

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The aim is storing only ecma values on the vm stack.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-11-26 16:03:20 +01:00
committed by GitHub
parent cbeecdb703
commit 9725936848
1 changed files with 5 additions and 15 deletions
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jerry-core/vm/vm.c
+5 -15
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@@ -2102,7 +2102,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
if (literal_index < register_end)
{
*stack_top_p++ = ECMA_VALUE_REGISTER_REF;
*stack_top_p++ = literal_index;
*stack_top_p++ = ecma_make_integer_value (literal_index);
*stack_top_p++ = ecma_fast_copy_value (VM_GET_REGISTER (frame_ctx_p, literal_index));
}
else
@@ -3756,6 +3756,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
if (object == ECMA_VALUE_REGISTER_REF)
{
property = (ecma_value_t) ecma_get_integer_from_value (property);
ecma_fast_free_value (VM_GET_REGISTER (frame_ctx_p, property));
VM_GET_REGISTER (frame_ctx_p, property) = result;
@@ -3809,24 +3810,13 @@ error:
if (ECMA_IS_VALUE_ERROR (result))
{
ecma_value_t *vm_stack_p = stack_top_p;
ecma_value_t *stack_bottom_p = VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth;
for (vm_stack_p = VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth;
vm_stack_p < stack_top_p;
vm_stack_p++)
while (stack_top_p > stack_bottom_p)
{
if (*vm_stack_p == ECMA_VALUE_REGISTER_REF)
{
JERRY_ASSERT (vm_stack_p < stack_top_p);
vm_stack_p++;
}
else
{
ecma_free_value (*vm_stack_p);
}
ecma_fast_free_value (*(--stack_top_p));
}
stack_top_p = VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth;
#if ENABLED (JERRY_DEBUGGER)
const uint32_t dont_stop = (JERRY_DEBUGGER_VM_IGNORE_EXCEPTION
| JERRY_DEBUGGER_VM_IGNORE