buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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 | #include "Dalvik.h" |
| 18 | #include "CompilerInternals.h" |
| 19 | |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 20 | namespace art { |
| 21 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 22 | static ArenaMemBlock *arenaHead, *currentArena; |
| 23 | static int numArenaBlocks; |
| 24 | |
| 25 | #define kArenaBitVectorGrowth 4 /* increase by 4 u4s when limit hit */ |
| 26 | |
| 27 | /* Allocate the initial memory block for arena-based allocation */ |
| 28 | bool oatHeapInit(void) |
| 29 | { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 30 | DCHECK(arenaHead == NULL); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 31 | arenaHead = |
| 32 | (ArenaMemBlock *) malloc(sizeof(ArenaMemBlock) + ARENA_DEFAULT_SIZE); |
| 33 | if (arenaHead == NULL) { |
| 34 | LOG(FATAL) << "No memory left to create compiler heap memory"; |
| 35 | } |
| 36 | arenaHead->blockSize = ARENA_DEFAULT_SIZE; |
| 37 | currentArena = arenaHead; |
| 38 | currentArena->bytesAllocated = 0; |
| 39 | currentArena->next = NULL; |
| 40 | numArenaBlocks = 1; |
| 41 | |
| 42 | return true; |
| 43 | } |
| 44 | |
| 45 | /* Arena-based malloc for compilation tasks */ |
| 46 | void* oatNew(size_t size, bool zero) |
| 47 | { |
| 48 | size = (size + 3) & ~3; |
| 49 | retry: |
| 50 | /* Normal case - space is available in the current page */ |
| 51 | if (size + currentArena->bytesAllocated <= currentArena->blockSize) { |
| 52 | void *ptr; |
| 53 | ptr = ¤tArena->ptr[currentArena->bytesAllocated]; |
| 54 | currentArena->bytesAllocated += size; |
| 55 | if (zero) { |
| 56 | memset(ptr, 0, size); |
| 57 | } |
| 58 | return ptr; |
| 59 | } else { |
| 60 | /* |
| 61 | * See if there are previously allocated arena blocks before the last |
| 62 | * reset |
| 63 | */ |
| 64 | if (currentArena->next) { |
| 65 | currentArena = currentArena->next; |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 66 | currentArena->bytesAllocated = 0; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 67 | goto retry; |
| 68 | } |
| 69 | |
| 70 | size_t blockSize = (size < ARENA_DEFAULT_SIZE) ? |
| 71 | ARENA_DEFAULT_SIZE : size; |
| 72 | /* Time to allocate a new arena */ |
| 73 | ArenaMemBlock *newArena = (ArenaMemBlock *) |
| 74 | malloc(sizeof(ArenaMemBlock) + blockSize); |
| 75 | if (newArena == NULL) { |
| 76 | LOG(FATAL) << "Arena allocation failure"; |
| 77 | } |
| 78 | newArena->blockSize = blockSize; |
| 79 | newArena->bytesAllocated = 0; |
| 80 | newArena->next = NULL; |
| 81 | currentArena->next = newArena; |
| 82 | currentArena = newArena; |
| 83 | numArenaBlocks++; |
Brian Carlstrom | 27ec961 | 2011-09-19 20:20:38 -0700 | [diff] [blame] | 84 | if (numArenaBlocks > 20000) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 85 | LOG(INFO) << "Total arena pages: " << numArenaBlocks; |
| 86 | } |
| 87 | goto retry; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /* Reclaim all the arena blocks allocated so far */ |
| 92 | void oatArenaReset(void) |
| 93 | { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 94 | currentArena = arenaHead; |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 95 | if (currentArena) { |
| 96 | currentArena->bytesAllocated = 0; |
| 97 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | /* Growable List initialization */ |
| 101 | void oatInitGrowableList(GrowableList* gList, size_t initLength) |
| 102 | { |
| 103 | gList->numAllocated = initLength; |
| 104 | gList->numUsed = 0; |
| 105 | gList->elemList = (intptr_t *) oatNew(sizeof(intptr_t) * initLength, |
| 106 | true); |
| 107 | } |
| 108 | |
| 109 | /* Expand the capacity of a growable list */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 110 | STATIC void expandGrowableList(GrowableList* gList) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 111 | { |
| 112 | int newLength = gList->numAllocated; |
| 113 | if (newLength < 128) { |
| 114 | newLength <<= 1; |
| 115 | } else { |
| 116 | newLength += 128; |
| 117 | } |
| 118 | intptr_t *newArray = |
| 119 | (intptr_t *) oatNew(sizeof(intptr_t) * newLength, true); |
| 120 | memcpy(newArray, gList->elemList, sizeof(intptr_t) * gList->numAllocated); |
| 121 | gList->numAllocated = newLength; |
| 122 | gList->elemList = newArray; |
| 123 | } |
| 124 | |
| 125 | /* Insert a new element into the growable list */ |
| 126 | void oatInsertGrowableList(GrowableList* gList, intptr_t elem) |
| 127 | { |
Elliott Hughes | f5a7a47 | 2011-10-07 14:31:02 -0700 | [diff] [blame] | 128 | DCHECK_NE(gList->numAllocated, 0U); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 129 | if (gList->numUsed == gList->numAllocated) { |
| 130 | expandGrowableList(gList); |
| 131 | } |
| 132 | gList->elemList[gList->numUsed++] = elem; |
| 133 | } |
| 134 | |
| 135 | void oatGrowableListIteratorInit(GrowableList* gList, |
| 136 | GrowableListIterator* iterator) |
| 137 | { |
| 138 | iterator->list = gList; |
| 139 | iterator->idx = 0; |
| 140 | iterator->size = gList->numUsed; |
| 141 | } |
| 142 | |
| 143 | intptr_t oatGrowableListIteratorNext(GrowableListIterator* iterator) |
| 144 | { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 145 | DCHECK_EQ(iterator->size, iterator->list->numUsed); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 146 | if (iterator->idx == iterator->size) return 0; |
| 147 | return iterator->list->elemList[iterator->idx++]; |
| 148 | } |
| 149 | |
| 150 | intptr_t oatGrowableListGetElement(const GrowableList* gList, size_t idx) |
| 151 | { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 152 | DCHECK_LT(idx, gList->numUsed); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 153 | return gList->elemList[idx]; |
| 154 | } |
| 155 | |
| 156 | /* Debug Utility - dump a compilation unit */ |
| 157 | void oatDumpCompilationUnit(CompilationUnit* cUnit) |
| 158 | { |
| 159 | BasicBlock* bb; |
| 160 | const char* blockTypeNames[] = { |
| 161 | "Entry Block", |
| 162 | "Code Block", |
| 163 | "Exit Block", |
| 164 | "Exception Handling", |
| 165 | "Catch Block" |
| 166 | }; |
| 167 | |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 168 | LOG(INFO) << "Compiling " << PrettyMethod(cUnit->method_idx, *cUnit->dex_file); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 169 | LOG(INFO) << cUnit->insns << " insns"; |
| 170 | LOG(INFO) << cUnit->numBlocks << " blocks in total"; |
| 171 | GrowableListIterator iterator; |
| 172 | |
| 173 | oatGrowableListIteratorInit(&cUnit->blockList, &iterator); |
| 174 | |
| 175 | while (true) { |
| 176 | bb = (BasicBlock *) oatGrowableListIteratorNext(&iterator); |
| 177 | if (bb == NULL) break; |
| 178 | char buf[100]; |
| 179 | snprintf(buf, 100, "Block %d (%s) (insn %04x - %04x%s)", |
| 180 | bb->id, |
| 181 | blockTypeNames[bb->blockType], |
| 182 | bb->startOffset, |
| 183 | bb->lastMIRInsn ? bb->lastMIRInsn->offset : bb->startOffset, |
| 184 | bb->lastMIRInsn ? "" : " empty"); |
| 185 | LOG(INFO) << buf; |
| 186 | if (bb->taken) { |
| 187 | LOG(INFO) << " Taken branch: block " << bb->taken->id << |
| 188 | "(0x" << std::hex << bb->taken->startOffset << ")"; |
| 189 | } |
| 190 | if (bb->fallThrough) { |
| 191 | LOG(INFO) << " Fallthrough : block " << bb->fallThrough->id << |
| 192 | " (0x" << std::hex << bb->fallThrough->startOffset << ")"; |
| 193 | } |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | /* |
| 198 | * Dump the current stats of the compiler. |
| 199 | */ |
| 200 | void oatDumpStats(void) |
| 201 | { |
| 202 | oatArchDump(); |
| 203 | } |
| 204 | |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 205 | static uint32_t checkMasks[32] = { |
| 206 | 0x00000001, 0x00000002, 0x00000004, 0x00000008, 0x00000010, |
| 207 | 0x00000020, 0x00000040, 0x00000080, 0x00000100, 0x00000200, |
| 208 | 0x00000400, 0x00000800, 0x00001000, 0x00002000, 0x00004000, |
| 209 | 0x00008000, 0x00010000, 0x00020000, 0x00040000, 0x00080000, |
| 210 | 0x00100000, 0x00200000, 0x00400000, 0x00800000, 0x01000000, |
| 211 | 0x02000000, 0x04000000, 0x08000000, 0x10000000, 0x20000000, |
| 212 | 0x40000000, 0x80000000 }; |
| 213 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 214 | /* |
| 215 | * Allocate a bit vector with enough space to hold at least the specified |
| 216 | * number of bits. |
| 217 | * |
| 218 | * NOTE: memory is allocated from the compiler arena. |
| 219 | */ |
| 220 | ArenaBitVector* oatAllocBitVector(unsigned int startBits, bool expandable) |
| 221 | { |
| 222 | ArenaBitVector* bv; |
| 223 | unsigned int count; |
| 224 | |
Elliott Hughes | f5a7a47 | 2011-10-07 14:31:02 -0700 | [diff] [blame] | 225 | DCHECK_EQ(sizeof(bv->storage[0]), 4U); /* assuming 32-bit units */ |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 226 | |
| 227 | bv = (ArenaBitVector*) oatNew(sizeof(ArenaBitVector), false); |
| 228 | |
| 229 | count = (startBits + 31) >> 5; |
| 230 | |
| 231 | bv->storageSize = count; |
| 232 | bv->expandable = expandable; |
| 233 | bv->storage = (u4*) oatNew(count * sizeof(u4), true); |
| 234 | return bv; |
| 235 | } |
| 236 | |
| 237 | /* |
| 238 | * Determine whether or not the specified bit is set. |
| 239 | */ |
| 240 | bool oatIsBitSet(const ArenaBitVector* pBits, unsigned int num) |
| 241 | { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 242 | DCHECK_LT(num, pBits->storageSize * sizeof(u4) * 8); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 243 | |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 244 | unsigned int val = pBits->storage[num >> 5] & checkMasks[num & 0x1f]; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 245 | return (val != 0); |
| 246 | } |
| 247 | |
| 248 | /* |
| 249 | * Mark all bits bit as "clear". |
| 250 | */ |
| 251 | void oatClearAllBits(ArenaBitVector* pBits) |
| 252 | { |
| 253 | unsigned int count = pBits->storageSize; |
| 254 | memset(pBits->storage, 0, count * sizeof(u4)); |
| 255 | } |
| 256 | |
| 257 | /* |
| 258 | * Mark the specified bit as "set". |
| 259 | * |
| 260 | * Returns "false" if the bit is outside the range of the vector and we're |
| 261 | * not allowed to expand. |
| 262 | * |
| 263 | * NOTE: memory is allocated from the compiler arena. |
| 264 | */ |
| 265 | bool oatSetBit(ArenaBitVector* pBits, unsigned int num) |
| 266 | { |
| 267 | if (num >= pBits->storageSize * sizeof(u4) * 8) { |
| 268 | if (!pBits->expandable) { |
| 269 | LOG(FATAL) << "Can't expand"; |
| 270 | } |
| 271 | |
| 272 | /* Round up to word boundaries for "num+1" bits */ |
| 273 | unsigned int newSize = (num + 1 + 31) >> 5; |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 274 | DCHECK_GT(newSize, pBits->storageSize); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 275 | u4 *newStorage = (u4*)oatNew(newSize * sizeof(u4), false); |
| 276 | memcpy(newStorage, pBits->storage, pBits->storageSize * sizeof(u4)); |
| 277 | memset(&newStorage[pBits->storageSize], 0, |
| 278 | (newSize - pBits->storageSize) * sizeof(u4)); |
| 279 | pBits->storage = newStorage; |
| 280 | pBits->storageSize = newSize; |
| 281 | } |
| 282 | |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 283 | pBits->storage[num >> 5] |= checkMasks[num & 0x1f]; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 284 | return true; |
| 285 | } |
| 286 | |
| 287 | /* |
| 288 | * Mark the specified bit as "unset". |
| 289 | * |
| 290 | * Returns "false" if the bit is outside the range of the vector and we're |
| 291 | * not allowed to expand. |
| 292 | * |
| 293 | * NOTE: memory is allocated from the compiler arena. |
| 294 | */ |
| 295 | bool oatClearBit(ArenaBitVector* pBits, unsigned int num) |
| 296 | { |
| 297 | if (num >= pBits->storageSize * sizeof(u4) * 8) { |
| 298 | LOG(FATAL) << "Attempt to clear a bit not set in the vector yet";; |
| 299 | } |
| 300 | |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 301 | pBits->storage[num >> 5] &= ~checkMasks[num & 0x1f]; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 302 | return true; |
| 303 | } |
| 304 | |
| 305 | /* |
| 306 | * If set is true, mark all bits as 1. Otherwise mark all bits as 0. |
| 307 | */ |
| 308 | void oatMarkAllBits(ArenaBitVector* pBits, bool set) |
| 309 | { |
| 310 | int value = set ? -1 : 0; |
| 311 | memset(pBits->storage, value, pBits->storageSize * (int)sizeof(u4)); |
| 312 | } |
| 313 | |
| 314 | void oatDebugBitVector(char* msg, const ArenaBitVector* bv, int length) |
| 315 | { |
| 316 | int i; |
| 317 | |
| 318 | LOG(INFO) << msg; |
| 319 | for (i = 0; i < length; i++) { |
| 320 | if (oatIsBitSet(bv, i)) { |
| 321 | LOG(INFO) << " Bit " << i << " is set"; |
| 322 | } |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | void oatAbort(CompilationUnit* cUnit) |
| 327 | { |
| 328 | LOG(FATAL) << "Compiler aborting"; |
| 329 | } |
| 330 | |
| 331 | void oatDumpBlockBitVector(const GrowableList* blocks, char* msg, |
| 332 | const ArenaBitVector* bv, int length) |
| 333 | { |
| 334 | int i; |
| 335 | |
| 336 | LOG(INFO) << msg; |
| 337 | for (i = 0; i < length; i++) { |
| 338 | if (oatIsBitSet(bv, i)) { |
| 339 | BasicBlock *bb = |
| 340 | (BasicBlock *) oatGrowableListGetElement(blocks, i); |
| 341 | char blockName[BLOCK_NAME_LEN]; |
| 342 | oatGetBlockName(bb, blockName); |
| 343 | LOG(INFO) << "Bit " << i << " / " << blockName << " is set"; |
| 344 | } |
| 345 | } |
| 346 | } |
| 347 | /* Initialize the iterator structure */ |
| 348 | void oatBitVectorIteratorInit(ArenaBitVector* pBits, |
| 349 | ArenaBitVectorIterator* iterator) |
| 350 | { |
| 351 | iterator->pBits = pBits; |
| 352 | iterator->bitSize = pBits->storageSize * sizeof(u4) * 8; |
| 353 | iterator->idx = 0; |
| 354 | } |
| 355 | |
| 356 | /* |
| 357 | * If the vector sizes don't match, log an error and abort. |
| 358 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 359 | STATIC void checkSizes(const ArenaBitVector* bv1, const ArenaBitVector* bv2) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 360 | { |
| 361 | if (bv1->storageSize != bv2->storageSize) { |
| 362 | LOG(FATAL) << "Mismatched vector sizes (" << bv1->storageSize << |
| 363 | ", " << bv2->storageSize << ")"; |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | /* |
| 368 | * Copy a whole vector to the other. Only do that when the both vectors have |
| 369 | * the same size. |
| 370 | */ |
| 371 | void oatCopyBitVector(ArenaBitVector* dest, const ArenaBitVector* src) |
| 372 | { |
| 373 | /* if dest is expandable and < src, we could expand dest to match */ |
| 374 | checkSizes(dest, src); |
| 375 | |
| 376 | memcpy(dest->storage, src->storage, sizeof(u4) * dest->storageSize); |
| 377 | } |
| 378 | |
| 379 | /* |
| 380 | * Intersect two bit vectors and store the result to the dest vector. |
| 381 | */ |
| 382 | |
| 383 | bool oatIntersectBitVectors(ArenaBitVector* dest, const ArenaBitVector* src1, |
| 384 | const ArenaBitVector* src2) |
| 385 | { |
buzbee | aad7201 | 2011-09-21 21:52:09 -0700 | [diff] [blame] | 386 | DCHECK(src1 != NULL); |
| 387 | DCHECK(src2 != NULL); |
| 388 | if (dest->storageSize != src1->storageSize || |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 389 | dest->storageSize != src2->storageSize || |
| 390 | dest->expandable != src1->expandable || |
| 391 | dest->expandable != src2->expandable) |
| 392 | return false; |
| 393 | |
| 394 | unsigned int idx; |
| 395 | for (idx = 0; idx < dest->storageSize; idx++) { |
| 396 | dest->storage[idx] = src1->storage[idx] & src2->storage[idx]; |
| 397 | } |
| 398 | return true; |
| 399 | } |
| 400 | |
| 401 | /* |
| 402 | * Unify two bit vectors and store the result to the dest vector. |
| 403 | */ |
| 404 | bool oatUnifyBitVectors(ArenaBitVector* dest, const ArenaBitVector* src1, |
| 405 | const ArenaBitVector* src2) |
| 406 | { |
buzbee | aad7201 | 2011-09-21 21:52:09 -0700 | [diff] [blame] | 407 | DCHECK(src1 != NULL); |
| 408 | DCHECK(src2 != NULL); |
| 409 | if (dest->storageSize != src1->storageSize || |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 410 | dest->storageSize != src2->storageSize || |
| 411 | dest->expandable != src1->expandable || |
| 412 | dest->expandable != src2->expandable) |
| 413 | return false; |
| 414 | |
| 415 | unsigned int idx; |
| 416 | for (idx = 0; idx < dest->storageSize; idx++) { |
| 417 | dest->storage[idx] = src1->storage[idx] | src2->storage[idx]; |
| 418 | } |
| 419 | return true; |
| 420 | } |
| 421 | |
| 422 | /* |
| 423 | * Compare two bit vectors and return true if difference is seen. |
| 424 | */ |
| 425 | bool oatCompareBitVectors(const ArenaBitVector* src1, |
| 426 | const ArenaBitVector* src2) |
| 427 | { |
| 428 | if (src1->storageSize != src2->storageSize || |
| 429 | src1->expandable != src2->expandable) |
| 430 | return true; |
| 431 | |
| 432 | unsigned int idx; |
| 433 | for (idx = 0; idx < src1->storageSize; idx++) { |
| 434 | if (src1->storage[idx] != src2->storage[idx]) return true; |
| 435 | } |
| 436 | return false; |
| 437 | } |
| 438 | |
| 439 | /* |
| 440 | * Count the number of bits that are set. |
| 441 | */ |
| 442 | int oatCountSetBits(const ArenaBitVector* pBits) |
| 443 | { |
| 444 | unsigned int word; |
| 445 | unsigned int count = 0; |
| 446 | |
| 447 | for (word = 0; word < pBits->storageSize; word++) { |
| 448 | u4 val = pBits->storage[word]; |
| 449 | |
| 450 | if (val != 0) { |
| 451 | if (val == 0xffffffff) { |
| 452 | count += 32; |
| 453 | } else { |
| 454 | /* count the number of '1' bits */ |
| 455 | while (val != 0) { |
| 456 | val &= val - 1; |
| 457 | count++; |
| 458 | } |
| 459 | } |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | return count; |
| 464 | } |
| 465 | |
| 466 | /* Return the next position set to 1. -1 means end-of-element reached */ |
| 467 | int oatBitVectorIteratorNext(ArenaBitVectorIterator* iterator) |
| 468 | { |
| 469 | const ArenaBitVector* pBits = iterator->pBits; |
| 470 | u4 bitIndex = iterator->idx; |
| 471 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 472 | DCHECK_EQ(iterator->bitSize, pBits->storageSize * sizeof(u4) * 8); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 473 | if (bitIndex >= iterator->bitSize) return -1; |
| 474 | |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 475 | for (; bitIndex < iterator->bitSize;) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 476 | unsigned int wordIndex = bitIndex >> 5; |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 477 | unsigned int bitPos = bitIndex & 0x1f; |
| 478 | unsigned int word = pBits->storage[wordIndex]; |
| 479 | if (word & checkMasks[bitPos]) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 480 | iterator->idx = bitIndex+1; |
| 481 | return bitIndex; |
| 482 | } |
buzbee | 67bc236 | 2011-10-11 18:08:40 -0700 | [diff] [blame] | 483 | if (word == 0) { |
| 484 | // Helps if this is a sparse vector |
| 485 | bitIndex += (32 - bitPos); |
| 486 | } else { |
| 487 | bitIndex++; |
| 488 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 489 | } |
| 490 | /* No more set bits */ |
| 491 | return -1; |
| 492 | } |
| 493 | |
| 494 | /* |
| 495 | * Mark specified number of bits as "set". Cannot set all bits like ClearAll |
| 496 | * since there might be unused bits - setting those to one will confuse the |
| 497 | * iterator. |
| 498 | */ |
| 499 | void oatSetInitialBits(ArenaBitVector* pBits, unsigned int numBits) |
| 500 | { |
| 501 | unsigned int idx; |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 502 | DCHECK_LE(((numBits + 31) >> 5), pBits->storageSize); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 503 | for (idx = 0; idx < (numBits >> 5); idx++) { |
| 504 | pBits->storage[idx] = -1; |
| 505 | } |
| 506 | unsigned int remNumBits = numBits & 0x1f; |
| 507 | if (remNumBits) { |
| 508 | pBits->storage[idx] = (1 << remNumBits) - 1; |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | void oatGetBlockName(BasicBlock* bb, char* name) |
| 513 | { |
| 514 | switch (bb->blockType) { |
| 515 | case kEntryBlock: |
| 516 | snprintf(name, BLOCK_NAME_LEN, "entry"); |
| 517 | break; |
| 518 | case kExitBlock: |
| 519 | snprintf(name, BLOCK_NAME_LEN, "exit"); |
| 520 | break; |
| 521 | case kDalvikByteCode: |
| 522 | snprintf(name, BLOCK_NAME_LEN, "block%04x", bb->startOffset); |
| 523 | break; |
| 524 | case kExceptionHandling: |
| 525 | snprintf(name, BLOCK_NAME_LEN, "exception%04x", bb->startOffset); |
| 526 | break; |
| 527 | default: |
| 528 | snprintf(name, BLOCK_NAME_LEN, "??"); |
| 529 | break; |
| 530 | } |
| 531 | } |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 532 | |
| 533 | const char* oatGetShortyFromTargetIdx(CompilationUnit *cUnit, int targetIdx) |
| 534 | { |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 535 | const DexFile::MethodId& methodId = cUnit->dex_file->GetMethodId(targetIdx); |
Ian Rogers | a3760aa | 2011-11-14 14:32:37 -0800 | [diff] [blame] | 536 | return cUnit->dex_file->GetShorty(methodId.proto_idx_); |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 537 | } |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 538 | |
| 539 | } // namespace art |