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 = 64 * 1024; 23 private static final int M = N + 31; 24 25 static char[] sB1 = new char[M]; 26 static char[] sB2 = new char[M]; 27 static char[] sBo = new char[M]; 28 29 /// CHECK-START: void Main.halving_add_unsigned(char[], char[], char[]) 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:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 33 /// CHECK-DAG: <<Get2:c\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:c\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-ARM: void Main.halving_add_unsigned(char[], char[], char[]) 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:true rounded:false loop:<<Loop>> outer_loop:none 44 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 45 // 46 /// CHECK-START-ARM64: void Main.halving_add_unsigned(char[], char[], char[]) loop_optimization (after) 47 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 48 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 49 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 50 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 51 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 52 // 53 /// CHECK-START-MIPS64: void Main.halving_add_unsigned(char[], char[], char[]) loop_optimization (after) 54 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 55 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 56 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 57 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 58 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 59 private static void halving_add_unsigned(char[] b1, char[] b2, char[] bo) { 60 int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); 61 for (int i = 0; i < min_length; i++) { 62 bo[i] = (char) ((b1[i] + b2[i]) >> 1); 63 } 64 } 65 66 /// CHECK-START: void Main.halving_add_also_unsigned(char[], char[], char[]) loop_optimization (before) 67 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 68 /// CHECK-DAG: <<IMAX:i\d+>> IntConstant 65535 loop:none 69 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 70 /// CHECK-DAG: <<Get1:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 71 /// CHECK-DAG: <<Get2:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 72 /// CHECK-DAG: <<And1:i\d+>> And [<<Get1>>,<<IMAX>>] loop:<<Loop>> outer_loop:none 73 /// CHECK-DAG: <<And2:i\d+>> And [<<Get2>>,<<IMAX>>] loop:<<Loop>> outer_loop:none 74 /// CHECK-DAG: <<Add:i\d+>> Add [<<And1>>,<<And2>>] loop:<<Loop>> outer_loop:none 75 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none 76 /// CHECK-DAG: <<Cnv:c\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 77 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 78 // 79 /// CHECK-START-ARM: void Main.halving_add_also_unsigned(char[], char[], char[]) loop_optimization (after) 80 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 81 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 82 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 83 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 84 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 85 // 86 /// CHECK-START-ARM64: void Main.halving_add_also_unsigned(char[], char[], char[]) loop_optimization (after) 87 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 88 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 89 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 90 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 91 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 92 // 93 /// CHECK-START-MIPS64: void Main.halving_add_also_unsigned(char[], char[], char[]) loop_optimization (after) 94 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 95 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 96 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 97 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 98 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 99 // 100 // Note: HAnd has no impact (already a zero extension). 101 // 102 private static void halving_add_also_unsigned(char[] b1, char[] b2, char[] bo) { 103 int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); 104 for (int i = 0; i < min_length; i++) { 105 bo[i] = (char) (((b1[i] & 0xffff) + (b2[i] & 0xffff)) >> 1); 106 } 107 } 108 109 /// CHECK-START: void Main.rounding_halving_add_unsigned(char[], char[], char[]) loop_optimization (before) 110 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 111 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 112 /// CHECK-DAG: <<Get1:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 113 /// CHECK-DAG: <<Get2:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 114 /// CHECK-DAG: <<Add1:i\d+>> Add [<<Get1>>,<<Get2>>] loop:<<Loop>> outer_loop:none 115 /// CHECK-DAG: <<Add2:i\d+>> Add [<<Add1>>,<<I1>>] loop:<<Loop>> outer_loop:none 116 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add2>>,<<I1>>] loop:<<Loop>> outer_loop:none 117 /// CHECK-DAG: <<Cnv:c\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 118 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 119 // 120 /// CHECK-START-ARM: void Main.rounding_halving_add_unsigned(char[], char[], char[]) loop_optimization (after) 121 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 122 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 123 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 124 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:true loop:<<Loop>> outer_loop:none 125 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 126 // 127 /// CHECK-START-ARM64: void Main.rounding_halving_add_unsigned(char[], char[], char[]) loop_optimization (after) 128 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 129 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 130 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 131 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:true loop:<<Loop>> outer_loop:none 132 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 133 // 134 /// CHECK-START-MIPS64: void Main.rounding_halving_add_unsigned(char[], char[], char[]) loop_optimization (after) 135 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 136 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 137 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 138 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:true loop:<<Loop>> outer_loop:none 139 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 140 private static void rounding_halving_add_unsigned(char[] b1, char[] b2, char[] bo) { 141 int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); 142 for (int i = 0; i < min_length; i++) { 143 bo[i] = (char) ((b1[i] + b2[i] + 1) >> 1); 144 } 145 } 146 147 /// CHECK-START: void Main.rounding_halving_add_also_unsigned(char[], char[], char[]) loop_optimization (before) 148 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 149 /// CHECK-DAG: <<IMAX:i\d+>> IntConstant 65535 loop:none 150 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 151 /// CHECK-DAG: <<Get1:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 152 /// CHECK-DAG: <<Get2:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 153 /// CHECK-DAG: <<And1:i\d+>> And [<<Get1>>,<<IMAX>>] loop:<<Loop>> outer_loop:none 154 /// CHECK-DAG: <<And2:i\d+>> And [<<Get2>>,<<IMAX>>] loop:<<Loop>> outer_loop:none 155 /// CHECK-DAG: <<Add1:i\d+>> Add [<<And1>>,<<And2>>] loop:<<Loop>> outer_loop:none 156 /// CHECK-DAG: <<Add2:i\d+>> Add [<<Add1>>,<<I1>>] loop:<<Loop>> outer_loop:none 157 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add2>>,<<I1>>] loop:<<Loop>> outer_loop:none 158 /// CHECK-DAG: <<Cnv:c\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 159 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 160 // 161 /// CHECK-START-ARM: void Main.rounding_halving_add_also_unsigned(char[], char[], char[]) loop_optimization (after) 162 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 163 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 164 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 165 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:true loop:<<Loop>> outer_loop:none 166 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 167 // 168 /// CHECK-START-ARM64: void Main.rounding_halving_add_also_unsigned(char[], char[], char[]) loop_optimization (after) 169 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 170 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 171 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 172 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:true loop:<<Loop>> outer_loop:none 173 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 174 // 175 /// CHECK-START-MIPS64: void Main.rounding_halving_add_also_unsigned(char[], char[], char[]) loop_optimization (after) 176 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 177 /// CHECK-DAG: <<Get1:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 178 /// CHECK-DAG: <<Get2:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 179 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get1>>,<<Get2>>] unsigned:true rounded:true loop:<<Loop>> outer_loop:none 180 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 181 // 182 // Note: HAnd has no impact (already a zero extension). 183 // 184 private static void rounding_halving_add_also_unsigned(char[] b1, char[] b2, char[] bo) { 185 int min_length = Math.min(bo.length, Math.min(b1.length, b2.length)); 186 for (int i = 0; i < min_length; i++) { 187 bo[i] = (char) (((b1[i] & 0xffff) + (b2[i] & 0xffff) + 1) >> 1); 188 } 189 } 190 191 /// CHECK-START: void Main.halving_add_unsigned_constant(char[], char[]) loop_optimization (before) 192 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 193 /// CHECK-DAG: <<UMAX:i\d+>> IntConstant 65535 loop:none 194 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 195 /// CHECK-DAG: <<Get:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 196 /// CHECK-DAG: <<Add:i\d+>> Add [<<Get>>,<<UMAX>>] loop:<<Loop>> outer_loop:none 197 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none 198 /// CHECK-DAG: <<Cnv:c\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 199 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 200 // 201 /// CHECK-START-ARM: void Main.halving_add_unsigned_constant(char[], char[]) loop_optimization (after) 202 /// CHECK-DAG: <<UMAX:i\d+>> IntConstant 65535 loop:none 203 /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<UMAX>>] loop:none 204 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 205 /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 206 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 207 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 208 // 209 /// CHECK-START-ARM64: void Main.halving_add_unsigned_constant(char[], char[]) loop_optimization (after) 210 /// CHECK-DAG: <<UMAX:i\d+>> IntConstant 65535 loop:none 211 /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<UMAX>>] loop:none 212 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 213 /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 214 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 215 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 216 // 217 /// CHECK-START-MIPS64: void Main.halving_add_unsigned_constant(char[], char[]) loop_optimization (after) 218 /// CHECK-DAG: <<UMAX:i\d+>> IntConstant 65535 loop:none 219 /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<UMAX>>] loop:none 220 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 221 /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 222 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 223 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 224 private static void halving_add_unsigned_constant(char[] b1, char[] bo) { 225 int min_length = Math.min(bo.length, b1.length); 226 for (int i = 0; i < min_length; i++) { 227 bo[i] = (char) ((b1[i] + 0xffff) >> 1); 228 } 229 } 230 231 /// CHECK-START: void Main.halving_add_also_unsigned_constant(char[], char[]) loop_optimization (before) 232 /// CHECK-DAG: <<I1:i\d+>> IntConstant 1 loop:none 233 /// CHECK-DAG: <<UMAX:i\d+>> IntConstant 65535 loop:none 234 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 235 /// CHECK-DAG: <<Get:c\d+>> ArrayGet loop:<<Loop>> outer_loop:none 236 /// CHECK-DAG: <<And:i\d+>> And [<<Get>>,<<UMAX>>] loop:<<Loop>> outer_loop:none 237 /// CHECK-DAG: <<Add:i\d+>> Add [<<And>>,<<UMAX>>] loop:<<Loop>> outer_loop:none 238 /// CHECK-DAG: <<Shr:i\d+>> Shr [<<Add>>,<<I1>>] loop:<<Loop>> outer_loop:none 239 /// CHECK-DAG: <<Cnv:c\d+>> TypeConversion [<<Shr>>] loop:<<Loop>> outer_loop:none 240 /// CHECK-DAG: ArraySet [{{l\d+}},<<Phi>>,<<Cnv>>] loop:<<Loop>> outer_loop:none 241 // 242 /// CHECK-START-ARM: void Main.halving_add_also_unsigned_constant(char[], char[]) loop_optimization (after) 243 /// CHECK-DAG: <<UMAX:i\d+>> IntConstant 65535 loop:none 244 /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<UMAX>>] loop:none 245 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 246 /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 247 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 248 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 249 // 250 /// CHECK-START-ARM64: void Main.halving_add_also_unsigned_constant(char[], char[]) loop_optimization (after) 251 /// CHECK-DAG: <<UMAX:i\d+>> IntConstant 65535 loop:none 252 /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<UMAX>>] loop:none 253 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 254 /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 255 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 256 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 257 // 258 /// CHECK-START-MIPS64: void Main.halving_add_also_unsigned_constant(char[], char[]) loop_optimization (after) 259 /// CHECK-DAG: <<UMAX:i\d+>> IntConstant 65535 loop:none 260 /// CHECK-DAG: <<Repl:d\d+>> VecReplicateScalar [<<UMAX>>] loop:none 261 /// CHECK-DAG: <<Phi:i\d+>> Phi loop:<<Loop:B\d+>> outer_loop:none 262 /// CHECK-DAG: <<Get:d\d+>> VecLoad loop:<<Loop>> outer_loop:none 263 /// CHECK-DAG: <<HAdd:d\d+>> VecHalvingAdd [<<Get>>,<<Repl>>] unsigned:true rounded:false loop:<<Loop>> outer_loop:none 264 /// CHECK-DAG: VecStore [{{l\d+}},<<Phi>>,<<HAdd>>] loop:<<Loop>> outer_loop:none 265 // 266 // Note: HAnd has no impact (already a zero extension). 267 // 268 private static void halving_add_also_unsigned_constant(char[] b1, char[] bo) { 269 int min_length = Math.min(bo.length, b1.length); 270 for (int i = 0; i < min_length; i++) { 271 bo[i] = (char) (((b1[i] & 0xffff) + 0xffff) >> 1); 272 } 273 } 274 275 public static void main(String[] args) { 276 // Some interesting values. 277 char[] interesting = { 278 (char) 0x0000, 279 (char) 0x0001, 280 (char) 0x0002, 281 (char) 0x1234, 282 (char) 0x8000, 283 (char) 0x8001, 284 (char) 0x7fff, 285 (char) 0xffff 286 }; 287 // Initialize cross-values to test all cases, and also 288 // set up some extra values to exercise the cleanup loop. 289 for (int i = 0; i < M; i++) { 290 sB1[i] = (char) i; 291 sB2[i] = interesting[i & 7]; 292 } 293 294 // Test halving add idioms. 295 halving_add_unsigned(sB1, sB2, sBo); 296 for (int i = 0; i < M; i++) { 297 char e = (char) ((sB1[i] + sB2[i]) >> 1); 298 expectEquals(e, sBo[i]); 299 } 300 halving_add_also_unsigned(sB1, sB2, sBo); 301 for (int i = 0; i < M; i++) { 302 char e = (char) ((sB1[i] + sB2[i]) >> 1); 303 expectEquals(e, sBo[i]); 304 } 305 rounding_halving_add_unsigned(sB1, sB2, sBo); 306 for (int i = 0; i < M; i++) { 307 char e = (char) ((sB1[i] + sB2[i] + 1) >> 1); 308 expectEquals(e, sBo[i]); 309 } 310 rounding_halving_add_also_unsigned(sB1, sB2, sBo); 311 for (int i = 0; i < M; i++) { 312 char e = (char) ((sB1[i] + sB2[i] + 1) >> 1); 313 expectEquals(e, sBo[i]); 314 } 315 halving_add_unsigned_constant(sB1, sBo); 316 for (int i = 0; i < M; i++) { 317 char e = (char) ((sB1[i] + 0xffff) >> 1); 318 expectEquals(e, sBo[i]); 319 } 320 halving_add_also_unsigned_constant(sB1, sBo); 321 for (int i = 0; i < M; i++) { 322 char e = (char) ((sB1[i] + 0xffff) >> 1); 323 expectEquals(e, sBo[i]); 324 } 325 326 System.out.println("passed"); 327 } 328 329 private static void expectEquals(int expected, int result) { 330 if (expected != result) { 331 throw new Error("Expected: " + expected + ", found: " + result); 332 } 333 } 334 } 335
