Copy_Assignment_Instruction¶
- class Copy_Assignment_Instruction (concrete, logical)¶
- Direct parents:
inherits Instruction
- Ancestor classes and implemented interfaces:
Field
Kind
Type
Description
Left (from Instruction)
syntactic
interface Writing_Operand_Interface
Output operand where the copy is stored.
Right
syntactic
interface Reading_Or_Address_Operand_Interface
Input value that is copied.
Left_Physical (from Instruction)
semantic to physical
class Physical_IR_Root
This edge instead points to the expression that represents the left operand, i.e., the expression that computed the glvalue where the result of the instruction will be stored.
For example, in
v = 42;(a LIR Integer_Literal_Instruction):The
Physicaledge points to the PIR Integer_Literal.The
Left_Physicaledge points to the Unqualified_Direct_Object_Selection for the variablev.And the
Physical_For_Assignmentedge points to the Assignment expression.
Its_Type (from Instruction)
semantic
class Type
Result type of the instruction, needed especially to distinguish assignments of complete structs from assignments of their first fields. Also needed to determine multiplication factor for pointer additions. For Cast_Instructions, this is the type casted to
Physical_For_Assignment (from Instruction)
semantic to physical
class Physical_IR_Root
Returns a PIR node for the assignment of the value that was computed by this instruction.
For example, in
v = 42;(a LIR Integer_Literal_Instruction):The
Physicaledge points to the PIR Integer_Literal.The
Left_Physicaledge points to the Unqualified_Direct_Object_Selection for the variablev.And the
Physical_For_Assignmentedge points to the Assignment expression.
Parent (from Logical_IR_Root)
semantic
class Logical_IR_Root
Physical (from Logical_IR_Root)
semantic to physical
class Physical_IR_Root