1 // Copyright (c) 2017, the R8 project authors. Please see the AUTHORS file 2 // for details. All rights reserved. Use of this source code is governed by a 3 // BSD-style license that can be found in the LICENSE file. 4 package com.android.tools.r8.ir.regalloc; 5 6 import static com.android.tools.r8.dex.Constants.U16BIT_MAX; 7 8 public class LiveIntervalsUse implements Comparable<LiveIntervalsUse> { 9 private final int position; 10 private final int limit; 11 LiveIntervalsUse(int position, int limit)12 public LiveIntervalsUse(int position, int limit) { 13 this.position = position; 14 this.limit = limit; 15 } 16 getPosition()17 public int getPosition() { 18 return position; 19 } 20 getLimit()21 public int getLimit() { 22 return limit; 23 } 24 25 @Override hashCode()26 public int hashCode() { 27 return position + limit * 7; 28 } 29 30 @Override equals(Object other)31 public boolean equals(Object other) { 32 if (!(other instanceof LiveIntervalsUse)) { 33 return false; 34 } 35 LiveIntervalsUse o = (LiveIntervalsUse) other; 36 return o.position == position && o.limit == limit; 37 } 38 39 @Override compareTo(LiveIntervalsUse o)40 public int compareTo(LiveIntervalsUse o) { 41 if (o.position != position) { 42 return position - o.position; 43 } 44 return limit - o.limit; 45 } 46 hasConstraint()47 public boolean hasConstraint() { 48 return limit < U16BIT_MAX; 49 } 50 } 51