1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /** 18 * Tests for halving-add idiomatic vectorization. 19 */ 20 public class Main { 21 22 private static final int N = 256; 23 private static final int M = N * N + 15; 24 25 static byte[] sB1 = new byte[M]; 26 static byte[] sB2 = new byte[M]; 27 static byte[] sBo = new byte[M]; 28 29 /// CHECK-START: void Main.halving_add_signed(byte[], byte[], byte[]) loop_optimization (before) 30 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 31 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 32 /// CHECK-DAG: <<Get1:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 33 /// CHECK-DAG: <<Get2:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 34 /// CHECK-DAG: <<Add:i\d+>> Add [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none 35 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none 36 /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 37 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 38 // 39 /// CHECK-START-ARM64: void Main.halving_add_signed(byte[], byte[], byte[]) loop_optimization (after) 40 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 41 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 42 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 43 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:false rounded:false loop:<<Loop>> outer_loop:none 44 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none halving_add_signed(byte[] b1, byte[] b2, byte[] bo)45 private static void halving_add_signed(byte[] b1, byte[] b2, byte[] bo) { 46 int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); 47 for (int i = 0; i < min_length; i++) { 48 bo[i] = (byte) ((b1[i] + b2[i]) >> 1); 49 } 50 } 51 52 /// CHECK-START: void Main.halving_add_unsigned(byte[], byte[], byte[]) loop_optimization (before) 53 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 54 /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none 55 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 56 /// CHECK-DAG: <<Get1:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 57 /// CHECK-DAG: <<Get2:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 58 /// CHECK-DAG: <<And1:i\d+>> And [<<Get1>>,<<I255>>] loop:<<Loop>> outer_loop:none 59 /// CHECK-DAG: <<And2:i\d+>> And [<<Get2>>,<<I255>>] loop:<<Loop>> outer_loop:none 60 /// CHECK-DAG: <<Add:i\d+>> Add [<<And1>>,<<And2>>] loop:<<Loop>> outer_loop:none 61 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none 62 /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 63 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 64 // 65 /// CHECK-START-ARM64: void Main.halving_add_unsigned(byte[], byte[], byte[]) loop_optimization (after) 66 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 67 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 68 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 69 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 70 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none halving_add_unsigned(byte[] b1, byte[] b2, byte[] bo)71 private static void halving_add_unsigned(byte[] b1, byte[] b2, byte[] bo) { 72 int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); 73 for (int i = 0; i < min_length; i++) { 74 bo[i] = (byte) (((b1[i] & 0xff) + (b2[i] & 0xff)) >> 1); 75 } 76 } 77 78 /// CHECK-START: void Main.rounding_halving_add_signed(byte[], byte[], byte[]) loop_optimization (before) 79 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 80 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 81 /// CHECK-DAG: <<Get1:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 82 /// CHECK-DAG: <<Get2:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 83 /// CHECK-DAG: <<Add1:i\d+>> Add [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none 84 /// CHECK-DAG: <<Add2:i\d+>> Add [<<Add1>>,<<I1>>] loop:<<Loop>> outer_loop:none 85 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add2>>,<<I1>>] loop:<<Loop>> outer_loop:none 86 /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 87 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 88 // 89 /// CHECK-START-ARM64: void Main.rounding_halving_add_signed(byte[], byte[], byte[]) loop_optimization (after) 90 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 91 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 92 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 93 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:false rounded:true loop:<<Loop>> outer_loop:none 94 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none rounding_halving_add_signed(byte[] b1, byte[] b2, byte[] bo)95 private static void rounding_halving_add_signed(byte[] b1, byte[] b2, byte[] bo) { 96 int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); 97 for (int i = 0; i < min_length; i++) { 98 bo[i] = (byte) ((b1[i] + b2[i] + 1) >> 1); 99 } 100 } 101 102 /// CHECK-START: void Main.rounding_halving_add_unsigned(byte[], byte[], byte[]) loop_optimization (before) 103 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 104 /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none 105 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 106 /// CHECK-DAG: <<Get1:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 107 /// CHECK-DAG: <<Get2:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 108 /// CHECK-DAG: <<And1:i\d+>> And [<<Get1>>,<<I255>>] loop:<<Loop>> outer_loop:none 109 /// CHECK-DAG: <<And2:i\d+>> And [<<Get2>>,<<I255>>] loop:<<Loop>> outer_loop:none 110 /// CHECK-DAG: <<Add1:i\d+>> Add [<<And1>>,<<And2>>] loop:<<Loop>> outer_loop:none 111 /// CHECK-DAG: <<Add2:i\d+>> Add [<<Add1>>,<<I1>>] loop:<<Loop>> outer_loop:none 112 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add2>>,<<I1>>] loop:<<Loop>> outer_loop:none 113 /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 114 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 115 // 116 /// CHECK-START-ARM64: void Main.rounding_halving_add_unsigned(byte[], byte[], byte[]) loop_optimization (after) 117 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 118 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 119 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 120 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:true loop:<<Loop>> outer_loop:none 121 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none rounding_halving_add_unsigned(byte[] b1, byte[] b2, byte[] bo)122 private static void rounding_halving_add_unsigned(byte[] b1, byte[] b2, byte[] bo) { 123 int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); 124 for (int i = 0; i < min_length; i++) { 125 bo[i] = (byte) (((b1[i] & 0xff) + (b2[i] & 0xff) + 1) >> 1); 126 } 127 } 128 129 /// CHECK-START: void Main.halving_add_signed_constant(byte[], byte[]) loop_optimization (before) 130 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 131 /// CHECK-DAG: <<I127:i\d+>> IntConstant 127 loop:none 132 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 133 /// CHECK-DAG: <<Get:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 134 /// CHECK-DAG: <<Add:i\d+>> Add [<<Get>>,<<I127>>] loop:<<Loop>> outer_loop:none 135 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none 136 /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 137 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 138 // 139 /// CHECK-START-ARM64: void Main.halving_add_signed_constant(byte[], byte[]) loop_optimization (after) 140 /// CHECK-DAG: <<I127:i\d+>> IntConstant 127 loop:none 141 /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<I127>>] loop:none 142 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 143 /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 144 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] unsigned:false rounded:false loop:<<Loop>> outer_loop:none 145 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none halving_add_signed_constant(byte[] b1, byte[] bo)146 private static void halving_add_signed_constant(byte[] b1, byte[] bo) { 147 int min_length = Math.min(bo.length, b1.length); 148 for (int i = 0; i < min_length; i++) { 149 bo[i] = (byte) ((b1[i] + 0x7f) >> 1); 150 } 151 } 152 153 /// CHECK-START: void Main.halving_add_unsigned_constant(byte[], byte[]) loop_optimization (before) 154 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 155 /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none 156 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 157 /// CHECK-DAG: <<Get:b\d+>> ArrayGet loop:<<Loop>> outer_loop:none 158 /// CHECK-DAG: <<And:i\d+>> And [<<Get>>,<<I255>>] loop:<<Loop>> outer_loop:none 159 /// CHECK-DAG: <<Add:i\d+>> Add [<<And>>,<<I255>>] loop:<<Loop>> outer_loop:none 160 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none 161 /// CHECK-DAG: <<Cnv:b\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 162 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 163 // 164 /// CHECK-START-ARM64: void Main.halving_add_unsigned_constant(byte[], byte[]) loop_optimization (after) 165 /// CHECK-DAG: <<I255:i\d+>> IntConstant 255 loop:none 166 /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<I255>>] loop:none 167 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 168 /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 169 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 170 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none halving_add_unsigned_constant(byte[] b1, byte[] bo)171 private static void halving_add_unsigned_constant(byte[] b1, byte[] bo) { 172 int min_length = Math.min(bo.length, b1.length); 173 for (int i = 0; i < min_length; i++) { 174 bo[i] = (byte) (((b1[i] & 0xff) + 0xff) >> 1); 175 } 176 } 177 main(String[] args)178 public static void main(String[] args) { 179 // Initialize cross-values to test all cases, and also 180 // set up some extra values to exercise the cleanup loop. 181 int k = 0; 182 for (int i = 0; i < N; i++) { 183 for (int j = 0; j < N; j++) { 184 sB1[k] = (byte) i; 185 sB2[k] = (byte) j; 186 k++; 187 } 188 } 189 for (int i = 0; i < 15; i++) { 190 sB1[k] = (byte) i; 191 sB2[k] = 100; 192 k++; 193 } 194 expectEquals(k, M); 195 196 // Test halving add idioms. 197 halving_add_signed(sB1, sB2, sBo); 198 for (int i = 0; i < M; i++) { 199 byte e = (byte) ((sB1[i] + sB2[i]) >> 1); 200 expectEquals(e, sBo[i]); 201 } 202 halving_add_unsigned(sB1, sB2, sBo); 203 for (int i = 0; i < M; i++) { 204 byte e = (byte) (((sB1[i] & 0xff) + (sB2[i] & 0xff)) >> 1); 205 expectEquals(e, sBo[i]); 206 } 207 rounding_halving_add_signed(sB1, sB2, sBo); 208 for (int i = 0; i < M; i++) { 209 byte e = (byte) ((sB1[i] + sB2[i] + 1) >> 1); 210 expectEquals(e, sBo[i]); 211 } 212 rounding_halving_add_unsigned(sB1, sB2, sBo); 213 for (int i = 0; i < M; i++) { 214 byte e = (byte) (((sB1[i] & 0xff) + (sB2[i] & 0xff) + 1) >> 1); 215 expectEquals(e, sBo[i]); 216 } 217 halving_add_signed_constant(sB1, sBo); 218 for (int i = 0; i < M; i++) { 219 byte e = (byte) ((sB1[i] + 0x7f) >> 1); 220 expectEquals(e, sBo[i]); 221 } 222 halving_add_unsigned_constant(sB1, sBo); 223 for (int i = 0; i < M; i++) { 224 byte e = (byte) (((sB1[i] & 0xff) + 0xff) >> 1); 225 expectEquals(e, sBo[i]); 226 } 227 228 System.out.println("passed"); 229 } 230 expectEquals(int expected, int result)231 private static void expectEquals(int expected, int result) { 232 if (expected != result) { 233 throw new Error("Expected: " + expected + ", found: " + result); 234 } 235 } 236 } 237