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package org.graalvm.compiler.lir;

import jdk.vm.ci.code.RegisterValue;
import jdk.vm.ci.code.StackSlot;
import jdk.vm.ci.meta.AllocatableValue;
import jdk.vm.ci.meta.ValueKind;

Represents a value that is yet to be bound to a machine location (such as a RegisterValue or StackSlot) by a register allocator.
/** * Represents a value that is yet to be bound to a machine location (such as a {@link RegisterValue} * or {@link StackSlot}) by a register allocator. */
public final class Variable extends AllocatableValue {
The identifier of the variable. This is a non-zero index in a contiguous 0-based name space.
/** * The identifier of the variable. This is a non-zero index in a contiguous 0-based name space. */
public final int index; private String name;
Creates a new variable.
Params:
  • kind –
  • index –
/** * Creates a new variable. * * @param kind * @param index */
public Variable(ValueKind<?> kind, int index) { super(kind); assert index >= 0; this.index = index; } public void setName(String name) { this.name = name; } public String getName() { return name; } @Override public String toString() { if (name != null) { return name; } else { return "v" + index + getKindSuffix(); } } @Override public int hashCode() { return 71 * super.hashCode() + index; } @Override public boolean equals(Object obj) { if (obj instanceof Variable) { Variable other = (Variable) obj; return super.equals(other) && index == other.index; } return false; } }