__ add(cell, context, r0);
__ LoadP(cell, ContextOperand(cell));
- // Check that cell value is not the_hole.
- __ LoadP(cell_value, FieldMemOperand(cell, PropertyCell::kValueOffset));
- __ CompareRoot(cell_value, Heap::kTheHoleValueRootIndex);
- __ beq(&slow_case);
-
// Load PropertyDetails for the cell (actually only the cell_type and kind).
__ LoadP(cell_details, FieldMemOperand(cell, PropertyCell::kDetailsOffset));
__ SmiUntag(cell_details);
__ andi(cell_details, cell_details,
Operand(PropertyDetails::PropertyCellTypeField::kMask |
- PropertyDetails::KindField::kMask));
+ PropertyDetails::KindField::kMask |
+ PropertyDetails::kAttributesReadOnlyMask));
// Check if PropertyCell holds mutable data.
Label not_mutable_data;
// Check if PropertyCell value matches the new value (relevant for Constant,
// ConstantType and Undefined cells).
Label not_same_value;
+ __ LoadP(cell_value, FieldMemOperand(cell, PropertyCell::kValueOffset));
__ cmp(cell_value, value);
__ bne(¬_same_value);
+ // Make sure the PropertyCell is not marked READ_ONLY.
+ __ andi(r0, cell_details, Operand(PropertyDetails::kAttributesReadOnlyMask));
+ __ bne(&slow_case, cr0);
+
if (FLAG_debug_code) {
Label done;
// This can only be true for Constant, ConstantType and Undefined cells,
__ Ret();
__ bind(¬_same_value);
- // Check if PropertyCell contains data with constant type.
+ // Check if PropertyCell contains data with constant type (and is not
+ // READ_ONLY).
__ cmpi(cell_details, Operand(PropertyDetails::PropertyCellTypeField::encode(
PropertyCellType::kConstantType) |
PropertyDetails::KindField::encode(kData)));