| // Copyright (c) 2019, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.utils; |
| |
| public class BitUtils { |
| |
| public static final int ALL_BITS_SET_MASK = -1; |
| public static final int ONLY_SIGN_BIT_SET_MASK = Integer.MIN_VALUE; |
| |
| public static boolean isBitSet(int value, int which) { |
| return isBitInMaskSet(value, 1 << (which - 1)); |
| } |
| |
| public static boolean isBitInMaskSet(int value, int mask) { |
| return (value & mask) != 0; |
| } |
| |
| public static boolean isBitInMaskUnset(int value, int mask) { |
| return !isBitInMaskSet(value, mask); |
| } |
| |
| public static boolean isAligned(int alignment, int value) { |
| assert (alignment & (alignment - 1)) == 0; // Check alignment is power of 2. |
| return (value & (alignment - 1)) == 0; |
| } |
| } |