| File: | llvm/lib/Bitcode/Reader/BitcodeReader.cpp |
| Warning: | line 3545, column 5 Value stored to 'OpNum' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | //===- BitcodeReader.cpp - Internal BitcodeReader implementation ----------===// |
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "llvm/Bitcode/BitcodeReader.h" |
| 10 | #include "MetadataLoader.h" |
| 11 | #include "ValueList.h" |
| 12 | #include "llvm/ADT/APFloat.h" |
| 13 | #include "llvm/ADT/APInt.h" |
| 14 | #include "llvm/ADT/ArrayRef.h" |
| 15 | #include "llvm/ADT/DenseMap.h" |
| 16 | #include "llvm/ADT/Optional.h" |
| 17 | #include "llvm/ADT/STLExtras.h" |
| 18 | #include "llvm/ADT/SmallString.h" |
| 19 | #include "llvm/ADT/SmallVector.h" |
| 20 | #include "llvm/ADT/StringRef.h" |
| 21 | #include "llvm/ADT/Triple.h" |
| 22 | #include "llvm/ADT/Twine.h" |
| 23 | #include "llvm/Bitcode/BitcodeCommon.h" |
| 24 | #include "llvm/Bitcode/LLVMBitCodes.h" |
| 25 | #include "llvm/Bitstream/BitstreamReader.h" |
| 26 | #include "llvm/Config/llvm-config.h" |
| 27 | #include "llvm/IR/Argument.h" |
| 28 | #include "llvm/IR/Attributes.h" |
| 29 | #include "llvm/IR/AutoUpgrade.h" |
| 30 | #include "llvm/IR/BasicBlock.h" |
| 31 | #include "llvm/IR/CallingConv.h" |
| 32 | #include "llvm/IR/Comdat.h" |
| 33 | #include "llvm/IR/Constant.h" |
| 34 | #include "llvm/IR/Constants.h" |
| 35 | #include "llvm/IR/DataLayout.h" |
| 36 | #include "llvm/IR/DebugInfo.h" |
| 37 | #include "llvm/IR/DebugInfoMetadata.h" |
| 38 | #include "llvm/IR/DebugLoc.h" |
| 39 | #include "llvm/IR/DerivedTypes.h" |
| 40 | #include "llvm/IR/Function.h" |
| 41 | #include "llvm/IR/GVMaterializer.h" |
| 42 | #include "llvm/IR/GlobalAlias.h" |
| 43 | #include "llvm/IR/GlobalIFunc.h" |
| 44 | #include "llvm/IR/GlobalIndirectSymbol.h" |
| 45 | #include "llvm/IR/GlobalObject.h" |
| 46 | #include "llvm/IR/GlobalValue.h" |
| 47 | #include "llvm/IR/GlobalVariable.h" |
| 48 | #include "llvm/IR/InlineAsm.h" |
| 49 | #include "llvm/IR/InstIterator.h" |
| 50 | #include "llvm/IR/InstrTypes.h" |
| 51 | #include "llvm/IR/Instruction.h" |
| 52 | #include "llvm/IR/Instructions.h" |
| 53 | #include "llvm/IR/Intrinsics.h" |
| 54 | #include "llvm/IR/LLVMContext.h" |
| 55 | #include "llvm/IR/Metadata.h" |
| 56 | #include "llvm/IR/Module.h" |
| 57 | #include "llvm/IR/ModuleSummaryIndex.h" |
| 58 | #include "llvm/IR/Operator.h" |
| 59 | #include "llvm/IR/Type.h" |
| 60 | #include "llvm/IR/Value.h" |
| 61 | #include "llvm/IR/Verifier.h" |
| 62 | #include "llvm/Support/AtomicOrdering.h" |
| 63 | #include "llvm/Support/Casting.h" |
| 64 | #include "llvm/Support/CommandLine.h" |
| 65 | #include "llvm/Support/Compiler.h" |
| 66 | #include "llvm/Support/Debug.h" |
| 67 | #include "llvm/Support/Error.h" |
| 68 | #include "llvm/Support/ErrorHandling.h" |
| 69 | #include "llvm/Support/ErrorOr.h" |
| 70 | #include "llvm/Support/ManagedStatic.h" |
| 71 | #include "llvm/Support/MathExtras.h" |
| 72 | #include "llvm/Support/MemoryBuffer.h" |
| 73 | #include "llvm/Support/raw_ostream.h" |
| 74 | #include <algorithm> |
| 75 | #include <cassert> |
| 76 | #include <cstddef> |
| 77 | #include <cstdint> |
| 78 | #include <deque> |
| 79 | #include <map> |
| 80 | #include <memory> |
| 81 | #include <set> |
| 82 | #include <string> |
| 83 | #include <system_error> |
| 84 | #include <tuple> |
| 85 | #include <utility> |
| 86 | #include <vector> |
| 87 | |
| 88 | using namespace llvm; |
| 89 | |
| 90 | static cl::opt<bool> PrintSummaryGUIDs( |
| 91 | "print-summary-global-ids", cl::init(false), cl::Hidden, |
| 92 | cl::desc( |
| 93 | "Print the global id for each value when reading the module summary")); |
| 94 | |
| 95 | namespace { |
| 96 | |
| 97 | enum { |
| 98 | SWITCH_INST_MAGIC = 0x4B5 // May 2012 => 1205 => Hex |
| 99 | }; |
| 100 | |
| 101 | } // end anonymous namespace |
| 102 | |
| 103 | static Error error(const Twine &Message) { |
| 104 | return make_error<StringError>( |
| 105 | Message, make_error_code(BitcodeError::CorruptedBitcode)); |
| 106 | } |
| 107 | |
| 108 | static Error hasInvalidBitcodeHeader(BitstreamCursor &Stream) { |
| 109 | if (!Stream.canSkipToPos(4)) |
| 110 | return createStringError(std::errc::illegal_byte_sequence, |
| 111 | "file too small to contain bitcode header"); |
| 112 | for (unsigned C : {'B', 'C'}) |
| 113 | if (Expected<SimpleBitstreamCursor::word_t> Res = Stream.Read(8)) { |
| 114 | if (Res.get() != C) |
| 115 | return createStringError(std::errc::illegal_byte_sequence, |
| 116 | "file doesn't start with bitcode header"); |
| 117 | } else |
| 118 | return Res.takeError(); |
| 119 | for (unsigned C : {0x0, 0xC, 0xE, 0xD}) |
| 120 | if (Expected<SimpleBitstreamCursor::word_t> Res = Stream.Read(4)) { |
| 121 | if (Res.get() != C) |
| 122 | return createStringError(std::errc::illegal_byte_sequence, |
| 123 | "file doesn't start with bitcode header"); |
| 124 | } else |
| 125 | return Res.takeError(); |
| 126 | return Error::success(); |
| 127 | } |
| 128 | |
| 129 | static Expected<BitstreamCursor> initStream(MemoryBufferRef Buffer) { |
| 130 | const unsigned char *BufPtr = (const unsigned char *)Buffer.getBufferStart(); |
| 131 | const unsigned char *BufEnd = BufPtr + Buffer.getBufferSize(); |
| 132 | |
| 133 | if (Buffer.getBufferSize() & 3) |
| 134 | return error("Invalid bitcode signature"); |
| 135 | |
| 136 | // If we have a wrapper header, parse it and ignore the non-bc file contents. |
| 137 | // The magic number is 0x0B17C0DE stored in little endian. |
| 138 | if (isBitcodeWrapper(BufPtr, BufEnd)) |
| 139 | if (SkipBitcodeWrapperHeader(BufPtr, BufEnd, true)) |
| 140 | return error("Invalid bitcode wrapper header"); |
| 141 | |
| 142 | BitstreamCursor Stream(ArrayRef<uint8_t>(BufPtr, BufEnd)); |
| 143 | if (Error Err = hasInvalidBitcodeHeader(Stream)) |
| 144 | return std::move(Err); |
| 145 | |
| 146 | return std::move(Stream); |
| 147 | } |
| 148 | |
| 149 | /// Convert a string from a record into an std::string, return true on failure. |
| 150 | template <typename StrTy> |
| 151 | static bool convertToString(ArrayRef<uint64_t> Record, unsigned Idx, |
| 152 | StrTy &Result) { |
| 153 | if (Idx > Record.size()) |
| 154 | return true; |
| 155 | |
| 156 | Result.append(Record.begin() + Idx, Record.end()); |
| 157 | return false; |
| 158 | } |
| 159 | |
| 160 | // Strip all the TBAA attachment for the module. |
| 161 | static void stripTBAA(Module *M) { |
| 162 | for (auto &F : *M) { |
| 163 | if (F.isMaterializable()) |
| 164 | continue; |
| 165 | for (auto &I : instructions(F)) |
| 166 | I.setMetadata(LLVMContext::MD_tbaa, nullptr); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /// Read the "IDENTIFICATION_BLOCK_ID" block, do some basic enforcement on the |
| 171 | /// "epoch" encoded in the bitcode, and return the producer name if any. |
| 172 | static Expected<std::string> readIdentificationBlock(BitstreamCursor &Stream) { |
| 173 | if (Error Err = Stream.EnterSubBlock(bitc::IDENTIFICATION_BLOCK_ID)) |
| 174 | return std::move(Err); |
| 175 | |
| 176 | // Read all the records. |
| 177 | SmallVector<uint64_t, 64> Record; |
| 178 | |
| 179 | std::string ProducerIdentification; |
| 180 | |
| 181 | while (true) { |
| 182 | BitstreamEntry Entry; |
| 183 | if (Expected<BitstreamEntry> Res = Stream.advance()) |
| 184 | Entry = Res.get(); |
| 185 | else |
| 186 | return Res.takeError(); |
| 187 | |
| 188 | switch (Entry.Kind) { |
| 189 | default: |
| 190 | case BitstreamEntry::Error: |
| 191 | return error("Malformed block"); |
| 192 | case BitstreamEntry::EndBlock: |
| 193 | return ProducerIdentification; |
| 194 | case BitstreamEntry::Record: |
| 195 | // The interesting case. |
| 196 | break; |
| 197 | } |
| 198 | |
| 199 | // Read a record. |
| 200 | Record.clear(); |
| 201 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); |
| 202 | if (!MaybeBitCode) |
| 203 | return MaybeBitCode.takeError(); |
| 204 | switch (MaybeBitCode.get()) { |
| 205 | default: // Default behavior: reject |
| 206 | return error("Invalid value"); |
| 207 | case bitc::IDENTIFICATION_CODE_STRING: // IDENTIFICATION: [strchr x N] |
| 208 | convertToString(Record, 0, ProducerIdentification); |
| 209 | break; |
| 210 | case bitc::IDENTIFICATION_CODE_EPOCH: { // EPOCH: [epoch#] |
| 211 | unsigned epoch = (unsigned)Record[0]; |
| 212 | if (epoch != bitc::BITCODE_CURRENT_EPOCH) { |
| 213 | return error( |
| 214 | Twine("Incompatible epoch: Bitcode '") + Twine(epoch) + |
| 215 | "' vs current: '" + Twine(bitc::BITCODE_CURRENT_EPOCH) + "'"); |
| 216 | } |
| 217 | } |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | static Expected<std::string> readIdentificationCode(BitstreamCursor &Stream) { |
| 223 | // We expect a number of well-defined blocks, though we don't necessarily |
| 224 | // need to understand them all. |
| 225 | while (true) { |
| 226 | if (Stream.AtEndOfStream()) |
| 227 | return ""; |
| 228 | |
| 229 | BitstreamEntry Entry; |
| 230 | if (Expected<BitstreamEntry> Res = Stream.advance()) |
| 231 | Entry = std::move(Res.get()); |
| 232 | else |
| 233 | return Res.takeError(); |
| 234 | |
| 235 | switch (Entry.Kind) { |
| 236 | case BitstreamEntry::EndBlock: |
| 237 | case BitstreamEntry::Error: |
| 238 | return error("Malformed block"); |
| 239 | |
| 240 | case BitstreamEntry::SubBlock: |
| 241 | if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) |
| 242 | return readIdentificationBlock(Stream); |
| 243 | |
| 244 | // Ignore other sub-blocks. |
| 245 | if (Error Err = Stream.SkipBlock()) |
| 246 | return std::move(Err); |
| 247 | continue; |
| 248 | case BitstreamEntry::Record: |
| 249 | if (Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID)) |
| 250 | continue; |
| 251 | else |
| 252 | return Skipped.takeError(); |
| 253 | } |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | static Expected<bool> hasObjCCategoryInModule(BitstreamCursor &Stream) { |
| 258 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) |
| 259 | return std::move(Err); |
| 260 | |
| 261 | SmallVector<uint64_t, 64> Record; |
| 262 | // Read all the records for this module. |
| 263 | |
| 264 | while (true) { |
| 265 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 266 | if (!MaybeEntry) |
| 267 | return MaybeEntry.takeError(); |
| 268 | BitstreamEntry Entry = MaybeEntry.get(); |
| 269 | |
| 270 | switch (Entry.Kind) { |
| 271 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 272 | case BitstreamEntry::Error: |
| 273 | return error("Malformed block"); |
| 274 | case BitstreamEntry::EndBlock: |
| 275 | return false; |
| 276 | case BitstreamEntry::Record: |
| 277 | // The interesting case. |
| 278 | break; |
| 279 | } |
| 280 | |
| 281 | // Read a record. |
| 282 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 283 | if (!MaybeRecord) |
| 284 | return MaybeRecord.takeError(); |
| 285 | switch (MaybeRecord.get()) { |
| 286 | default: |
| 287 | break; // Default behavior, ignore unknown content. |
| 288 | case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N] |
| 289 | std::string S; |
| 290 | if (convertToString(Record, 0, S)) |
| 291 | return error("Invalid record"); |
| 292 | // Check for the i386 and other (x86_64, ARM) conventions |
| 293 | if (S.find("__DATA,__objc_catlist") != std::string::npos || |
| 294 | S.find("__OBJC,__category") != std::string::npos) |
| 295 | return true; |
| 296 | break; |
| 297 | } |
| 298 | } |
| 299 | Record.clear(); |
| 300 | } |
| 301 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 301); |
| 302 | } |
| 303 | |
| 304 | static Expected<bool> hasObjCCategory(BitstreamCursor &Stream) { |
| 305 | // We expect a number of well-defined blocks, though we don't necessarily |
| 306 | // need to understand them all. |
| 307 | while (true) { |
| 308 | BitstreamEntry Entry; |
| 309 | if (Expected<BitstreamEntry> Res = Stream.advance()) |
| 310 | Entry = std::move(Res.get()); |
| 311 | else |
| 312 | return Res.takeError(); |
| 313 | |
| 314 | switch (Entry.Kind) { |
| 315 | case BitstreamEntry::Error: |
| 316 | return error("Malformed block"); |
| 317 | case BitstreamEntry::EndBlock: |
| 318 | return false; |
| 319 | |
| 320 | case BitstreamEntry::SubBlock: |
| 321 | if (Entry.ID == bitc::MODULE_BLOCK_ID) |
| 322 | return hasObjCCategoryInModule(Stream); |
| 323 | |
| 324 | // Ignore other sub-blocks. |
| 325 | if (Error Err = Stream.SkipBlock()) |
| 326 | return std::move(Err); |
| 327 | continue; |
| 328 | |
| 329 | case BitstreamEntry::Record: |
| 330 | if (Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID)) |
| 331 | continue; |
| 332 | else |
| 333 | return Skipped.takeError(); |
| 334 | } |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | static Expected<std::string> readModuleTriple(BitstreamCursor &Stream) { |
| 339 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) |
| 340 | return std::move(Err); |
| 341 | |
| 342 | SmallVector<uint64_t, 64> Record; |
| 343 | |
| 344 | std::string Triple; |
| 345 | |
| 346 | // Read all the records for this module. |
| 347 | while (true) { |
| 348 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 349 | if (!MaybeEntry) |
| 350 | return MaybeEntry.takeError(); |
| 351 | BitstreamEntry Entry = MaybeEntry.get(); |
| 352 | |
| 353 | switch (Entry.Kind) { |
| 354 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 355 | case BitstreamEntry::Error: |
| 356 | return error("Malformed block"); |
| 357 | case BitstreamEntry::EndBlock: |
| 358 | return Triple; |
| 359 | case BitstreamEntry::Record: |
| 360 | // The interesting case. |
| 361 | break; |
| 362 | } |
| 363 | |
| 364 | // Read a record. |
| 365 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 366 | if (!MaybeRecord) |
| 367 | return MaybeRecord.takeError(); |
| 368 | switch (MaybeRecord.get()) { |
| 369 | default: break; // Default behavior, ignore unknown content. |
| 370 | case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N] |
| 371 | std::string S; |
| 372 | if (convertToString(Record, 0, S)) |
| 373 | return error("Invalid record"); |
| 374 | Triple = S; |
| 375 | break; |
| 376 | } |
| 377 | } |
| 378 | Record.clear(); |
| 379 | } |
| 380 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 380); |
| 381 | } |
| 382 | |
| 383 | static Expected<std::string> readTriple(BitstreamCursor &Stream) { |
| 384 | // We expect a number of well-defined blocks, though we don't necessarily |
| 385 | // need to understand them all. |
| 386 | while (true) { |
| 387 | Expected<BitstreamEntry> MaybeEntry = Stream.advance(); |
| 388 | if (!MaybeEntry) |
| 389 | return MaybeEntry.takeError(); |
| 390 | BitstreamEntry Entry = MaybeEntry.get(); |
| 391 | |
| 392 | switch (Entry.Kind) { |
| 393 | case BitstreamEntry::Error: |
| 394 | return error("Malformed block"); |
| 395 | case BitstreamEntry::EndBlock: |
| 396 | return ""; |
| 397 | |
| 398 | case BitstreamEntry::SubBlock: |
| 399 | if (Entry.ID == bitc::MODULE_BLOCK_ID) |
| 400 | return readModuleTriple(Stream); |
| 401 | |
| 402 | // Ignore other sub-blocks. |
| 403 | if (Error Err = Stream.SkipBlock()) |
| 404 | return std::move(Err); |
| 405 | continue; |
| 406 | |
| 407 | case BitstreamEntry::Record: |
| 408 | if (llvm::Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID)) |
| 409 | continue; |
| 410 | else |
| 411 | return Skipped.takeError(); |
| 412 | } |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | namespace { |
| 417 | |
| 418 | class BitcodeReaderBase { |
| 419 | protected: |
| 420 | BitcodeReaderBase(BitstreamCursor Stream, StringRef Strtab) |
| 421 | : Stream(std::move(Stream)), Strtab(Strtab) { |
| 422 | this->Stream.setBlockInfo(&BlockInfo); |
| 423 | } |
| 424 | |
| 425 | BitstreamBlockInfo BlockInfo; |
| 426 | BitstreamCursor Stream; |
| 427 | StringRef Strtab; |
| 428 | |
| 429 | /// In version 2 of the bitcode we store names of global values and comdats in |
| 430 | /// a string table rather than in the VST. |
| 431 | bool UseStrtab = false; |
| 432 | |
| 433 | Expected<unsigned> parseVersionRecord(ArrayRef<uint64_t> Record); |
| 434 | |
| 435 | /// If this module uses a string table, pop the reference to the string table |
| 436 | /// and return the referenced string and the rest of the record. Otherwise |
| 437 | /// just return the record itself. |
| 438 | std::pair<StringRef, ArrayRef<uint64_t>> |
| 439 | readNameFromStrtab(ArrayRef<uint64_t> Record); |
| 440 | |
| 441 | bool readBlockInfo(); |
| 442 | |
| 443 | // Contains an arbitrary and optional string identifying the bitcode producer |
| 444 | std::string ProducerIdentification; |
| 445 | |
| 446 | Error error(const Twine &Message); |
| 447 | }; |
| 448 | |
| 449 | } // end anonymous namespace |
| 450 | |
| 451 | Error BitcodeReaderBase::error(const Twine &Message) { |
| 452 | std::string FullMsg = Message.str(); |
| 453 | if (!ProducerIdentification.empty()) |
| 454 | FullMsg += " (Producer: '" + ProducerIdentification + "' Reader: 'LLVM " + |
| 455 | LLVM_VERSION_STRING"13.0.0" "')"; |
| 456 | return ::error(FullMsg); |
| 457 | } |
| 458 | |
| 459 | Expected<unsigned> |
| 460 | BitcodeReaderBase::parseVersionRecord(ArrayRef<uint64_t> Record) { |
| 461 | if (Record.empty()) |
| 462 | return error("Invalid record"); |
| 463 | unsigned ModuleVersion = Record[0]; |
| 464 | if (ModuleVersion > 2) |
| 465 | return error("Invalid value"); |
| 466 | UseStrtab = ModuleVersion >= 2; |
| 467 | return ModuleVersion; |
| 468 | } |
| 469 | |
| 470 | std::pair<StringRef, ArrayRef<uint64_t>> |
| 471 | BitcodeReaderBase::readNameFromStrtab(ArrayRef<uint64_t> Record) { |
| 472 | if (!UseStrtab) |
| 473 | return {"", Record}; |
| 474 | // Invalid reference. Let the caller complain about the record being empty. |
| 475 | if (Record[0] + Record[1] > Strtab.size()) |
| 476 | return {"", {}}; |
| 477 | return {StringRef(Strtab.data() + Record[0], Record[1]), Record.slice(2)}; |
| 478 | } |
| 479 | |
| 480 | namespace { |
| 481 | |
| 482 | class BitcodeReader : public BitcodeReaderBase, public GVMaterializer { |
| 483 | LLVMContext &Context; |
| 484 | Module *TheModule = nullptr; |
| 485 | // Next offset to start scanning for lazy parsing of function bodies. |
| 486 | uint64_t NextUnreadBit = 0; |
| 487 | // Last function offset found in the VST. |
| 488 | uint64_t LastFunctionBlockBit = 0; |
| 489 | bool SeenValueSymbolTable = false; |
| 490 | uint64_t VSTOffset = 0; |
| 491 | |
| 492 | std::vector<std::string> SectionTable; |
| 493 | std::vector<std::string> GCTable; |
| 494 | |
| 495 | std::vector<Type*> TypeList; |
| 496 | DenseMap<Function *, FunctionType *> FunctionTypes; |
| 497 | BitcodeReaderValueList ValueList; |
| 498 | Optional<MetadataLoader> MDLoader; |
| 499 | std::vector<Comdat *> ComdatList; |
| 500 | SmallVector<Instruction *, 64> InstructionList; |
| 501 | |
| 502 | std::vector<std::pair<GlobalVariable *, unsigned>> GlobalInits; |
| 503 | std::vector<std::pair<GlobalIndirectSymbol *, unsigned>> IndirectSymbolInits; |
| 504 | std::vector<std::pair<Function *, unsigned>> FunctionPrefixes; |
| 505 | std::vector<std::pair<Function *, unsigned>> FunctionPrologues; |
| 506 | std::vector<std::pair<Function *, unsigned>> FunctionPersonalityFns; |
| 507 | |
| 508 | /// The set of attributes by index. Index zero in the file is for null, and |
| 509 | /// is thus not represented here. As such all indices are off by one. |
| 510 | std::vector<AttributeList> MAttributes; |
| 511 | |
| 512 | /// The set of attribute groups. |
| 513 | std::map<unsigned, AttributeList> MAttributeGroups; |
| 514 | |
| 515 | /// While parsing a function body, this is a list of the basic blocks for the |
| 516 | /// function. |
| 517 | std::vector<BasicBlock*> FunctionBBs; |
| 518 | |
| 519 | // When reading the module header, this list is populated with functions that |
| 520 | // have bodies later in the file. |
| 521 | std::vector<Function*> FunctionsWithBodies; |
| 522 | |
| 523 | // When intrinsic functions are encountered which require upgrading they are |
| 524 | // stored here with their replacement function. |
| 525 | using UpdatedIntrinsicMap = DenseMap<Function *, Function *>; |
| 526 | UpdatedIntrinsicMap UpgradedIntrinsics; |
| 527 | // Intrinsics which were remangled because of types rename |
| 528 | UpdatedIntrinsicMap RemangledIntrinsics; |
| 529 | |
| 530 | // Several operations happen after the module header has been read, but |
| 531 | // before function bodies are processed. This keeps track of whether |
| 532 | // we've done this yet. |
| 533 | bool SeenFirstFunctionBody = false; |
| 534 | |
| 535 | /// When function bodies are initially scanned, this map contains info about |
| 536 | /// where to find deferred function body in the stream. |
| 537 | DenseMap<Function*, uint64_t> DeferredFunctionInfo; |
| 538 | |
| 539 | /// When Metadata block is initially scanned when parsing the module, we may |
| 540 | /// choose to defer parsing of the metadata. This vector contains info about |
| 541 | /// which Metadata blocks are deferred. |
| 542 | std::vector<uint64_t> DeferredMetadataInfo; |
| 543 | |
| 544 | /// These are basic blocks forward-referenced by block addresses. They are |
| 545 | /// inserted lazily into functions when they're loaded. The basic block ID is |
| 546 | /// its index into the vector. |
| 547 | DenseMap<Function *, std::vector<BasicBlock *>> BasicBlockFwdRefs; |
| 548 | std::deque<Function *> BasicBlockFwdRefQueue; |
| 549 | |
| 550 | /// Indicates that we are using a new encoding for instruction operands where |
| 551 | /// most operands in the current FUNCTION_BLOCK are encoded relative to the |
| 552 | /// instruction number, for a more compact encoding. Some instruction |
| 553 | /// operands are not relative to the instruction ID: basic block numbers, and |
| 554 | /// types. Once the old style function blocks have been phased out, we would |
| 555 | /// not need this flag. |
| 556 | bool UseRelativeIDs = false; |
| 557 | |
| 558 | /// True if all functions will be materialized, negating the need to process |
| 559 | /// (e.g.) blockaddress forward references. |
| 560 | bool WillMaterializeAllForwardRefs = false; |
| 561 | |
| 562 | bool StripDebugInfo = false; |
| 563 | TBAAVerifier TBAAVerifyHelper; |
| 564 | |
| 565 | std::vector<std::string> BundleTags; |
| 566 | SmallVector<SyncScope::ID, 8> SSIDs; |
| 567 | |
| 568 | public: |
| 569 | BitcodeReader(BitstreamCursor Stream, StringRef Strtab, |
| 570 | StringRef ProducerIdentification, LLVMContext &Context); |
| 571 | |
| 572 | Error materializeForwardReferencedFunctions(); |
| 573 | |
| 574 | Error materialize(GlobalValue *GV) override; |
| 575 | Error materializeModule() override; |
| 576 | std::vector<StructType *> getIdentifiedStructTypes() const override; |
| 577 | |
| 578 | /// Main interface to parsing a bitcode buffer. |
| 579 | /// \returns true if an error occurred. |
| 580 | Error parseBitcodeInto( |
| 581 | Module *M, bool ShouldLazyLoadMetadata = false, bool IsImporting = false, |
| 582 | DataLayoutCallbackTy DataLayoutCallback = [](StringRef) { return None; }); |
| 583 | |
| 584 | static uint64_t decodeSignRotatedValue(uint64_t V); |
| 585 | |
| 586 | /// Materialize any deferred Metadata block. |
| 587 | Error materializeMetadata() override; |
| 588 | |
| 589 | void setStripDebugInfo() override; |
| 590 | |
| 591 | private: |
| 592 | std::vector<StructType *> IdentifiedStructTypes; |
| 593 | StructType *createIdentifiedStructType(LLVMContext &Context, StringRef Name); |
| 594 | StructType *createIdentifiedStructType(LLVMContext &Context); |
| 595 | |
| 596 | /// Map all pointer types within \param Ty to the opaque pointer |
| 597 | /// type in the same address space if opaque pointers are being |
| 598 | /// used, otherwise nop. This converts a bitcode-reader internal |
| 599 | /// type into one suitable for use in a Value. |
| 600 | Type *flattenPointerTypes(Type *Ty) { |
| 601 | return Ty; |
| 602 | } |
| 603 | |
| 604 | /// Given a fully structured pointer type (i.e. not opaque), return |
| 605 | /// the flattened form of its element, suitable for use in a Value. |
| 606 | Type *getPointerElementFlatType(Type *Ty) { |
| 607 | return flattenPointerTypes(cast<PointerType>(Ty)->getElementType()); |
| 608 | } |
| 609 | |
| 610 | /// Given a fully structured pointer type, get its element type in |
| 611 | /// both fully structured form, and flattened form suitable for use |
| 612 | /// in a Value. |
| 613 | std::pair<Type *, Type *> getPointerElementTypes(Type *FullTy) { |
| 614 | Type *ElTy = cast<PointerType>(FullTy)->getElementType(); |
| 615 | return std::make_pair(ElTy, flattenPointerTypes(ElTy)); |
| 616 | } |
| 617 | |
| 618 | /// Return the flattened type (suitable for use in a Value) |
| 619 | /// specified by the given \param ID . |
| 620 | Type *getTypeByID(unsigned ID) { |
| 621 | return flattenPointerTypes(getFullyStructuredTypeByID(ID)); |
| 622 | } |
| 623 | |
| 624 | /// Return the fully structured (bitcode-reader internal) type |
| 625 | /// corresponding to the given \param ID . |
| 626 | Type *getFullyStructuredTypeByID(unsigned ID); |
| 627 | |
| 628 | Value *getFnValueByID(unsigned ID, Type *Ty, Type **FullTy = nullptr) { |
| 629 | if (Ty && Ty->isMetadataTy()) |
| 630 | return MetadataAsValue::get(Ty->getContext(), getFnMetadataByID(ID)); |
| 631 | return ValueList.getValueFwdRef(ID, Ty, FullTy); |
| 632 | } |
| 633 | |
| 634 | Metadata *getFnMetadataByID(unsigned ID) { |
| 635 | return MDLoader->getMetadataFwdRefOrLoad(ID); |
| 636 | } |
| 637 | |
| 638 | BasicBlock *getBasicBlock(unsigned ID) const { |
| 639 | if (ID >= FunctionBBs.size()) return nullptr; // Invalid ID |
| 640 | return FunctionBBs[ID]; |
| 641 | } |
| 642 | |
| 643 | AttributeList getAttributes(unsigned i) const { |
| 644 | if (i-1 < MAttributes.size()) |
| 645 | return MAttributes[i-1]; |
| 646 | return AttributeList(); |
| 647 | } |
| 648 | |
| 649 | /// Read a value/type pair out of the specified record from slot 'Slot'. |
| 650 | /// Increment Slot past the number of slots used in the record. Return true on |
| 651 | /// failure. |
| 652 | bool getValueTypePair(const SmallVectorImpl<uint64_t> &Record, unsigned &Slot, |
| 653 | unsigned InstNum, Value *&ResVal, |
| 654 | Type **FullTy = nullptr) { |
| 655 | if (Slot == Record.size()) return true; |
| 656 | unsigned ValNo = (unsigned)Record[Slot++]; |
| 657 | // Adjust the ValNo, if it was encoded relative to the InstNum. |
| 658 | if (UseRelativeIDs) |
| 659 | ValNo = InstNum - ValNo; |
| 660 | if (ValNo < InstNum) { |
| 661 | // If this is not a forward reference, just return the value we already |
| 662 | // have. |
| 663 | ResVal = getFnValueByID(ValNo, nullptr, FullTy); |
| 664 | return ResVal == nullptr; |
| 665 | } |
| 666 | if (Slot == Record.size()) |
| 667 | return true; |
| 668 | |
| 669 | unsigned TypeNo = (unsigned)Record[Slot++]; |
| 670 | ResVal = getFnValueByID(ValNo, getTypeByID(TypeNo)); |
| 671 | if (FullTy) |
| 672 | *FullTy = getFullyStructuredTypeByID(TypeNo); |
| 673 | return ResVal == nullptr; |
| 674 | } |
| 675 | |
| 676 | /// Read a value out of the specified record from slot 'Slot'. Increment Slot |
| 677 | /// past the number of slots used by the value in the record. Return true if |
| 678 | /// there is an error. |
| 679 | bool popValue(const SmallVectorImpl<uint64_t> &Record, unsigned &Slot, |
| 680 | unsigned InstNum, Type *Ty, Value *&ResVal) { |
| 681 | if (getValue(Record, Slot, InstNum, Ty, ResVal)) |
| 682 | return true; |
| 683 | // All values currently take a single record slot. |
| 684 | ++Slot; |
| 685 | return false; |
| 686 | } |
| 687 | |
| 688 | /// Like popValue, but does not increment the Slot number. |
| 689 | bool getValue(const SmallVectorImpl<uint64_t> &Record, unsigned Slot, |
| 690 | unsigned InstNum, Type *Ty, Value *&ResVal) { |
| 691 | ResVal = getValue(Record, Slot, InstNum, Ty); |
| 692 | return ResVal == nullptr; |
| 693 | } |
| 694 | |
| 695 | /// Version of getValue that returns ResVal directly, or 0 if there is an |
| 696 | /// error. |
| 697 | Value *getValue(const SmallVectorImpl<uint64_t> &Record, unsigned Slot, |
| 698 | unsigned InstNum, Type *Ty) { |
| 699 | if (Slot == Record.size()) return nullptr; |
| 700 | unsigned ValNo = (unsigned)Record[Slot]; |
| 701 | // Adjust the ValNo, if it was encoded relative to the InstNum. |
| 702 | if (UseRelativeIDs) |
| 703 | ValNo = InstNum - ValNo; |
| 704 | return getFnValueByID(ValNo, Ty); |
| 705 | } |
| 706 | |
| 707 | /// Like getValue, but decodes signed VBRs. |
| 708 | Value *getValueSigned(const SmallVectorImpl<uint64_t> &Record, unsigned Slot, |
| 709 | unsigned InstNum, Type *Ty) { |
| 710 | if (Slot == Record.size()) return nullptr; |
| 711 | unsigned ValNo = (unsigned)decodeSignRotatedValue(Record[Slot]); |
| 712 | // Adjust the ValNo, if it was encoded relative to the InstNum. |
| 713 | if (UseRelativeIDs) |
| 714 | ValNo = InstNum - ValNo; |
| 715 | return getFnValueByID(ValNo, Ty); |
| 716 | } |
| 717 | |
| 718 | /// Upgrades old-style typeless byval or sret attributes by adding the |
| 719 | /// corresponding argument's pointee type. |
| 720 | void propagateByValSRetTypes(CallBase *CB, ArrayRef<Type *> ArgsFullTys); |
| 721 | |
| 722 | /// Converts alignment exponent (i.e. power of two (or zero)) to the |
| 723 | /// corresponding alignment to use. If alignment is too large, returns |
| 724 | /// a corresponding error code. |
| 725 | Error parseAlignmentValue(uint64_t Exponent, MaybeAlign &Alignment); |
| 726 | Error parseAttrKind(uint64_t Code, Attribute::AttrKind *Kind); |
| 727 | Error parseModule( |
| 728 | uint64_t ResumeBit, bool ShouldLazyLoadMetadata = false, |
| 729 | DataLayoutCallbackTy DataLayoutCallback = [](StringRef) { return None; }); |
| 730 | |
| 731 | Error parseComdatRecord(ArrayRef<uint64_t> Record); |
| 732 | Error parseGlobalVarRecord(ArrayRef<uint64_t> Record); |
| 733 | Error parseFunctionRecord(ArrayRef<uint64_t> Record); |
| 734 | Error parseGlobalIndirectSymbolRecord(unsigned BitCode, |
| 735 | ArrayRef<uint64_t> Record); |
| 736 | |
| 737 | Error parseAttributeBlock(); |
| 738 | Error parseAttributeGroupBlock(); |
| 739 | Error parseTypeTable(); |
| 740 | Error parseTypeTableBody(); |
| 741 | Error parseOperandBundleTags(); |
| 742 | Error parseSyncScopeNames(); |
| 743 | |
| 744 | Expected<Value *> recordValue(SmallVectorImpl<uint64_t> &Record, |
| 745 | unsigned NameIndex, Triple &TT); |
| 746 | void setDeferredFunctionInfo(unsigned FuncBitcodeOffsetDelta, Function *F, |
| 747 | ArrayRef<uint64_t> Record); |
| 748 | Error parseValueSymbolTable(uint64_t Offset = 0); |
| 749 | Error parseGlobalValueSymbolTable(); |
| 750 | Error parseConstants(); |
| 751 | Error rememberAndSkipFunctionBodies(); |
| 752 | Error rememberAndSkipFunctionBody(); |
| 753 | /// Save the positions of the Metadata blocks and skip parsing the blocks. |
| 754 | Error rememberAndSkipMetadata(); |
| 755 | Error typeCheckLoadStoreInst(Type *ValType, Type *PtrType); |
| 756 | Error parseFunctionBody(Function *F); |
| 757 | Error globalCleanup(); |
| 758 | Error resolveGlobalAndIndirectSymbolInits(); |
| 759 | Error parseUseLists(); |
| 760 | Error findFunctionInStream( |
| 761 | Function *F, |
| 762 | DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator); |
| 763 | |
| 764 | SyncScope::ID getDecodedSyncScopeID(unsigned Val); |
| 765 | }; |
| 766 | |
| 767 | /// Class to manage reading and parsing function summary index bitcode |
| 768 | /// files/sections. |
| 769 | class ModuleSummaryIndexBitcodeReader : public BitcodeReaderBase { |
| 770 | /// The module index built during parsing. |
| 771 | ModuleSummaryIndex &TheIndex; |
| 772 | |
| 773 | /// Indicates whether we have encountered a global value summary section |
| 774 | /// yet during parsing. |
| 775 | bool SeenGlobalValSummary = false; |
| 776 | |
| 777 | /// Indicates whether we have already parsed the VST, used for error checking. |
| 778 | bool SeenValueSymbolTable = false; |
| 779 | |
| 780 | /// Set to the offset of the VST recorded in the MODULE_CODE_VSTOFFSET record. |
| 781 | /// Used to enable on-demand parsing of the VST. |
| 782 | uint64_t VSTOffset = 0; |
| 783 | |
| 784 | // Map to save ValueId to ValueInfo association that was recorded in the |
| 785 | // ValueSymbolTable. It is used after the VST is parsed to convert |
| 786 | // call graph edges read from the function summary from referencing |
| 787 | // callees by their ValueId to using the ValueInfo instead, which is how |
| 788 | // they are recorded in the summary index being built. |
| 789 | // We save a GUID which refers to the same global as the ValueInfo, but |
| 790 | // ignoring the linkage, i.e. for values other than local linkage they are |
| 791 | // identical. |
| 792 | DenseMap<unsigned, std::pair<ValueInfo, GlobalValue::GUID>> |
| 793 | ValueIdToValueInfoMap; |
| 794 | |
| 795 | /// Map populated during module path string table parsing, from the |
| 796 | /// module ID to a string reference owned by the index's module |
| 797 | /// path string table, used to correlate with combined index |
| 798 | /// summary records. |
| 799 | DenseMap<uint64_t, StringRef> ModuleIdMap; |
| 800 | |
| 801 | /// Original source file name recorded in a bitcode record. |
| 802 | std::string SourceFileName; |
| 803 | |
| 804 | /// The string identifier given to this module by the client, normally the |
| 805 | /// path to the bitcode file. |
| 806 | StringRef ModulePath; |
| 807 | |
| 808 | /// For per-module summary indexes, the unique numerical identifier given to |
| 809 | /// this module by the client. |
| 810 | unsigned ModuleId; |
| 811 | |
| 812 | public: |
| 813 | ModuleSummaryIndexBitcodeReader(BitstreamCursor Stream, StringRef Strtab, |
| 814 | ModuleSummaryIndex &TheIndex, |
| 815 | StringRef ModulePath, unsigned ModuleId); |
| 816 | |
| 817 | Error parseModule(); |
| 818 | |
| 819 | private: |
| 820 | void setValueGUID(uint64_t ValueID, StringRef ValueName, |
| 821 | GlobalValue::LinkageTypes Linkage, |
| 822 | StringRef SourceFileName); |
| 823 | Error parseValueSymbolTable( |
| 824 | uint64_t Offset, |
| 825 | DenseMap<unsigned, GlobalValue::LinkageTypes> &ValueIdToLinkageMap); |
| 826 | std::vector<ValueInfo> makeRefList(ArrayRef<uint64_t> Record); |
| 827 | std::vector<FunctionSummary::EdgeTy> makeCallList(ArrayRef<uint64_t> Record, |
| 828 | bool IsOldProfileFormat, |
| 829 | bool HasProfile, |
| 830 | bool HasRelBF); |
| 831 | Error parseEntireSummary(unsigned ID); |
| 832 | Error parseModuleStringTable(); |
| 833 | void parseTypeIdCompatibleVtableSummaryRecord(ArrayRef<uint64_t> Record); |
| 834 | void parseTypeIdCompatibleVtableInfo(ArrayRef<uint64_t> Record, size_t &Slot, |
| 835 | TypeIdCompatibleVtableInfo &TypeId); |
| 836 | std::vector<FunctionSummary::ParamAccess> |
| 837 | parseParamAccesses(ArrayRef<uint64_t> Record); |
| 838 | |
| 839 | std::pair<ValueInfo, GlobalValue::GUID> |
| 840 | getValueInfoFromValueId(unsigned ValueId); |
| 841 | |
| 842 | void addThisModule(); |
| 843 | ModuleSummaryIndex::ModuleInfo *getThisModule(); |
| 844 | }; |
| 845 | |
| 846 | } // end anonymous namespace |
| 847 | |
| 848 | std::error_code llvm::errorToErrorCodeAndEmitErrors(LLVMContext &Ctx, |
| 849 | Error Err) { |
| 850 | if (Err) { |
| 851 | std::error_code EC; |
| 852 | handleAllErrors(std::move(Err), [&](ErrorInfoBase &EIB) { |
| 853 | EC = EIB.convertToErrorCode(); |
| 854 | Ctx.emitError(EIB.message()); |
| 855 | }); |
| 856 | return EC; |
| 857 | } |
| 858 | return std::error_code(); |
| 859 | } |
| 860 | |
| 861 | BitcodeReader::BitcodeReader(BitstreamCursor Stream, StringRef Strtab, |
| 862 | StringRef ProducerIdentification, |
| 863 | LLVMContext &Context) |
| 864 | : BitcodeReaderBase(std::move(Stream), Strtab), Context(Context), |
| 865 | ValueList(Context, Stream.SizeInBytes()) { |
| 866 | this->ProducerIdentification = std::string(ProducerIdentification); |
| 867 | } |
| 868 | |
| 869 | Error BitcodeReader::materializeForwardReferencedFunctions() { |
| 870 | if (WillMaterializeAllForwardRefs) |
| 871 | return Error::success(); |
| 872 | |
| 873 | // Prevent recursion. |
| 874 | WillMaterializeAllForwardRefs = true; |
| 875 | |
| 876 | while (!BasicBlockFwdRefQueue.empty()) { |
| 877 | Function *F = BasicBlockFwdRefQueue.front(); |
| 878 | BasicBlockFwdRefQueue.pop_front(); |
| 879 | assert(F && "Expected valid function")(static_cast <bool> (F && "Expected valid function" ) ? void (0) : __assert_fail ("F && \"Expected valid function\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 879, __extension__ __PRETTY_FUNCTION__)); |
| 880 | if (!BasicBlockFwdRefs.count(F)) |
| 881 | // Already materialized. |
| 882 | continue; |
| 883 | |
| 884 | // Check for a function that isn't materializable to prevent an infinite |
| 885 | // loop. When parsing a blockaddress stored in a global variable, there |
| 886 | // isn't a trivial way to check if a function will have a body without a |
| 887 | // linear search through FunctionsWithBodies, so just check it here. |
| 888 | if (!F->isMaterializable()) |
| 889 | return error("Never resolved function from blockaddress"); |
| 890 | |
| 891 | // Try to materialize F. |
| 892 | if (Error Err = materialize(F)) |
| 893 | return Err; |
| 894 | } |
| 895 | assert(BasicBlockFwdRefs.empty() && "Function missing from queue")(static_cast <bool> (BasicBlockFwdRefs.empty() && "Function missing from queue") ? void (0) : __assert_fail ("BasicBlockFwdRefs.empty() && \"Function missing from queue\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 895, __extension__ __PRETTY_FUNCTION__)); |
| 896 | |
| 897 | // Reset state. |
| 898 | WillMaterializeAllForwardRefs = false; |
| 899 | return Error::success(); |
| 900 | } |
| 901 | |
| 902 | //===----------------------------------------------------------------------===// |
| 903 | // Helper functions to implement forward reference resolution, etc. |
| 904 | //===----------------------------------------------------------------------===// |
| 905 | |
| 906 | static bool hasImplicitComdat(size_t Val) { |
| 907 | switch (Val) { |
| 908 | default: |
| 909 | return false; |
| 910 | case 1: // Old WeakAnyLinkage |
| 911 | case 4: // Old LinkOnceAnyLinkage |
| 912 | case 10: // Old WeakODRLinkage |
| 913 | case 11: // Old LinkOnceODRLinkage |
| 914 | return true; |
| 915 | } |
| 916 | } |
| 917 | |
| 918 | static GlobalValue::LinkageTypes getDecodedLinkage(unsigned Val) { |
| 919 | switch (Val) { |
| 920 | default: // Map unknown/new linkages to external |
| 921 | case 0: |
| 922 | return GlobalValue::ExternalLinkage; |
| 923 | case 2: |
| 924 | return GlobalValue::AppendingLinkage; |
| 925 | case 3: |
| 926 | return GlobalValue::InternalLinkage; |
| 927 | case 5: |
| 928 | return GlobalValue::ExternalLinkage; // Obsolete DLLImportLinkage |
| 929 | case 6: |
| 930 | return GlobalValue::ExternalLinkage; // Obsolete DLLExportLinkage |
| 931 | case 7: |
| 932 | return GlobalValue::ExternalWeakLinkage; |
| 933 | case 8: |
| 934 | return GlobalValue::CommonLinkage; |
| 935 | case 9: |
| 936 | return GlobalValue::PrivateLinkage; |
| 937 | case 12: |
| 938 | return GlobalValue::AvailableExternallyLinkage; |
| 939 | case 13: |
| 940 | return GlobalValue::PrivateLinkage; // Obsolete LinkerPrivateLinkage |
| 941 | case 14: |
| 942 | return GlobalValue::PrivateLinkage; // Obsolete LinkerPrivateWeakLinkage |
| 943 | case 15: |
| 944 | return GlobalValue::ExternalLinkage; // Obsolete LinkOnceODRAutoHideLinkage |
| 945 | case 1: // Old value with implicit comdat. |
| 946 | case 16: |
| 947 | return GlobalValue::WeakAnyLinkage; |
| 948 | case 10: // Old value with implicit comdat. |
| 949 | case 17: |
| 950 | return GlobalValue::WeakODRLinkage; |
| 951 | case 4: // Old value with implicit comdat. |
| 952 | case 18: |
| 953 | return GlobalValue::LinkOnceAnyLinkage; |
| 954 | case 11: // Old value with implicit comdat. |
| 955 | case 19: |
| 956 | return GlobalValue::LinkOnceODRLinkage; |
| 957 | } |
| 958 | } |
| 959 | |
| 960 | static FunctionSummary::FFlags getDecodedFFlags(uint64_t RawFlags) { |
| 961 | FunctionSummary::FFlags Flags; |
| 962 | Flags.ReadNone = RawFlags & 0x1; |
| 963 | Flags.ReadOnly = (RawFlags >> 1) & 0x1; |
| 964 | Flags.NoRecurse = (RawFlags >> 2) & 0x1; |
| 965 | Flags.ReturnDoesNotAlias = (RawFlags >> 3) & 0x1; |
| 966 | Flags.NoInline = (RawFlags >> 4) & 0x1; |
| 967 | Flags.AlwaysInline = (RawFlags >> 5) & 0x1; |
| 968 | return Flags; |
| 969 | } |
| 970 | |
| 971 | // Decode the flags for GlobalValue in the summary. The bits for each attribute: |
| 972 | // |
| 973 | // linkage: [0,4), notEligibleToImport: 4, live: 5, local: 6, canAutoHide: 7, |
| 974 | // visibility: [8, 10). |
| 975 | static GlobalValueSummary::GVFlags getDecodedGVSummaryFlags(uint64_t RawFlags, |
| 976 | uint64_t Version) { |
| 977 | // Summary were not emitted before LLVM 3.9, we don't need to upgrade Linkage |
| 978 | // like getDecodedLinkage() above. Any future change to the linkage enum and |
| 979 | // to getDecodedLinkage() will need to be taken into account here as above. |
| 980 | auto Linkage = GlobalValue::LinkageTypes(RawFlags & 0xF); // 4 bits |
| 981 | auto Visibility = GlobalValue::VisibilityTypes((RawFlags >> 8) & 3); // 2 bits |
| 982 | RawFlags = RawFlags >> 4; |
| 983 | bool NotEligibleToImport = (RawFlags & 0x1) || Version < 3; |
| 984 | // The Live flag wasn't introduced until version 3. For dead stripping |
| 985 | // to work correctly on earlier versions, we must conservatively treat all |
| 986 | // values as live. |
| 987 | bool Live = (RawFlags & 0x2) || Version < 3; |
| 988 | bool Local = (RawFlags & 0x4); |
| 989 | bool AutoHide = (RawFlags & 0x8); |
| 990 | |
| 991 | return GlobalValueSummary::GVFlags(Linkage, Visibility, NotEligibleToImport, |
| 992 | Live, Local, AutoHide); |
| 993 | } |
| 994 | |
| 995 | // Decode the flags for GlobalVariable in the summary |
| 996 | static GlobalVarSummary::GVarFlags getDecodedGVarFlags(uint64_t RawFlags) { |
| 997 | return GlobalVarSummary::GVarFlags( |
| 998 | (RawFlags & 0x1) ? true : false, (RawFlags & 0x2) ? true : false, |
| 999 | (RawFlags & 0x4) ? true : false, |
| 1000 | (GlobalObject::VCallVisibility)(RawFlags >> 3)); |
| 1001 | } |
| 1002 | |
| 1003 | static GlobalValue::VisibilityTypes getDecodedVisibility(unsigned Val) { |
| 1004 | switch (Val) { |
| 1005 | default: // Map unknown visibilities to default. |
| 1006 | case 0: return GlobalValue::DefaultVisibility; |
| 1007 | case 1: return GlobalValue::HiddenVisibility; |
| 1008 | case 2: return GlobalValue::ProtectedVisibility; |
| 1009 | } |
| 1010 | } |
| 1011 | |
| 1012 | static GlobalValue::DLLStorageClassTypes |
| 1013 | getDecodedDLLStorageClass(unsigned Val) { |
| 1014 | switch (Val) { |
| 1015 | default: // Map unknown values to default. |
| 1016 | case 0: return GlobalValue::DefaultStorageClass; |
| 1017 | case 1: return GlobalValue::DLLImportStorageClass; |
| 1018 | case 2: return GlobalValue::DLLExportStorageClass; |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | static bool getDecodedDSOLocal(unsigned Val) { |
| 1023 | switch(Val) { |
| 1024 | default: // Map unknown values to preemptable. |
| 1025 | case 0: return false; |
| 1026 | case 1: return true; |
| 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | static GlobalVariable::ThreadLocalMode getDecodedThreadLocalMode(unsigned Val) { |
| 1031 | switch (Val) { |
| 1032 | case 0: return GlobalVariable::NotThreadLocal; |
| 1033 | default: // Map unknown non-zero value to general dynamic. |
| 1034 | case 1: return GlobalVariable::GeneralDynamicTLSModel; |
| 1035 | case 2: return GlobalVariable::LocalDynamicTLSModel; |
| 1036 | case 3: return GlobalVariable::InitialExecTLSModel; |
| 1037 | case 4: return GlobalVariable::LocalExecTLSModel; |
| 1038 | } |
| 1039 | } |
| 1040 | |
| 1041 | static GlobalVariable::UnnamedAddr getDecodedUnnamedAddrType(unsigned Val) { |
| 1042 | switch (Val) { |
| 1043 | default: // Map unknown to UnnamedAddr::None. |
| 1044 | case 0: return GlobalVariable::UnnamedAddr::None; |
| 1045 | case 1: return GlobalVariable::UnnamedAddr::Global; |
| 1046 | case 2: return GlobalVariable::UnnamedAddr::Local; |
| 1047 | } |
| 1048 | } |
| 1049 | |
| 1050 | static int getDecodedCastOpcode(unsigned Val) { |
| 1051 | switch (Val) { |
| 1052 | default: return -1; |
| 1053 | case bitc::CAST_TRUNC : return Instruction::Trunc; |
| 1054 | case bitc::CAST_ZEXT : return Instruction::ZExt; |
| 1055 | case bitc::CAST_SEXT : return Instruction::SExt; |
| 1056 | case bitc::CAST_FPTOUI : return Instruction::FPToUI; |
| 1057 | case bitc::CAST_FPTOSI : return Instruction::FPToSI; |
| 1058 | case bitc::CAST_UITOFP : return Instruction::UIToFP; |
| 1059 | case bitc::CAST_SITOFP : return Instruction::SIToFP; |
| 1060 | case bitc::CAST_FPTRUNC : return Instruction::FPTrunc; |
| 1061 | case bitc::CAST_FPEXT : return Instruction::FPExt; |
| 1062 | case bitc::CAST_PTRTOINT: return Instruction::PtrToInt; |
| 1063 | case bitc::CAST_INTTOPTR: return Instruction::IntToPtr; |
| 1064 | case bitc::CAST_BITCAST : return Instruction::BitCast; |
| 1065 | case bitc::CAST_ADDRSPACECAST: return Instruction::AddrSpaceCast; |
| 1066 | } |
| 1067 | } |
| 1068 | |
| 1069 | static int getDecodedUnaryOpcode(unsigned Val, Type *Ty) { |
| 1070 | bool IsFP = Ty->isFPOrFPVectorTy(); |
| 1071 | // UnOps are only valid for int/fp or vector of int/fp types |
| 1072 | if (!IsFP && !Ty->isIntOrIntVectorTy()) |
| 1073 | return -1; |
| 1074 | |
| 1075 | switch (Val) { |
| 1076 | default: |
| 1077 | return -1; |
| 1078 | case bitc::UNOP_FNEG: |
| 1079 | return IsFP ? Instruction::FNeg : -1; |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | static int getDecodedBinaryOpcode(unsigned Val, Type *Ty) { |
| 1084 | bool IsFP = Ty->isFPOrFPVectorTy(); |
| 1085 | // BinOps are only valid for int/fp or vector of int/fp types |
| 1086 | if (!IsFP && !Ty->isIntOrIntVectorTy()) |
| 1087 | return -1; |
| 1088 | |
| 1089 | switch (Val) { |
| 1090 | default: |
| 1091 | return -1; |
| 1092 | case bitc::BINOP_ADD: |
| 1093 | return IsFP ? Instruction::FAdd : Instruction::Add; |
| 1094 | case bitc::BINOP_SUB: |
| 1095 | return IsFP ? Instruction::FSub : Instruction::Sub; |
| 1096 | case bitc::BINOP_MUL: |
| 1097 | return IsFP ? Instruction::FMul : Instruction::Mul; |
| 1098 | case bitc::BINOP_UDIV: |
| 1099 | return IsFP ? -1 : Instruction::UDiv; |
| 1100 | case bitc::BINOP_SDIV: |
| 1101 | return IsFP ? Instruction::FDiv : Instruction::SDiv; |
| 1102 | case bitc::BINOP_UREM: |
| 1103 | return IsFP ? -1 : Instruction::URem; |
| 1104 | case bitc::BINOP_SREM: |
| 1105 | return IsFP ? Instruction::FRem : Instruction::SRem; |
| 1106 | case bitc::BINOP_SHL: |
| 1107 | return IsFP ? -1 : Instruction::Shl; |
| 1108 | case bitc::BINOP_LSHR: |
| 1109 | return IsFP ? -1 : Instruction::LShr; |
| 1110 | case bitc::BINOP_ASHR: |
| 1111 | return IsFP ? -1 : Instruction::AShr; |
| 1112 | case bitc::BINOP_AND: |
| 1113 | return IsFP ? -1 : Instruction::And; |
| 1114 | case bitc::BINOP_OR: |
| 1115 | return IsFP ? -1 : Instruction::Or; |
| 1116 | case bitc::BINOP_XOR: |
| 1117 | return IsFP ? -1 : Instruction::Xor; |
| 1118 | } |
| 1119 | } |
| 1120 | |
| 1121 | static AtomicRMWInst::BinOp getDecodedRMWOperation(unsigned Val) { |
| 1122 | switch (Val) { |
| 1123 | default: return AtomicRMWInst::BAD_BINOP; |
| 1124 | case bitc::RMW_XCHG: return AtomicRMWInst::Xchg; |
| 1125 | case bitc::RMW_ADD: return AtomicRMWInst::Add; |
| 1126 | case bitc::RMW_SUB: return AtomicRMWInst::Sub; |
| 1127 | case bitc::RMW_AND: return AtomicRMWInst::And; |
| 1128 | case bitc::RMW_NAND: return AtomicRMWInst::Nand; |
| 1129 | case bitc::RMW_OR: return AtomicRMWInst::Or; |
| 1130 | case bitc::RMW_XOR: return AtomicRMWInst::Xor; |
| 1131 | case bitc::RMW_MAX: return AtomicRMWInst::Max; |
| 1132 | case bitc::RMW_MIN: return AtomicRMWInst::Min; |
| 1133 | case bitc::RMW_UMAX: return AtomicRMWInst::UMax; |
| 1134 | case bitc::RMW_UMIN: return AtomicRMWInst::UMin; |
| 1135 | case bitc::RMW_FADD: return AtomicRMWInst::FAdd; |
| 1136 | case bitc::RMW_FSUB: return AtomicRMWInst::FSub; |
| 1137 | } |
| 1138 | } |
| 1139 | |
| 1140 | static AtomicOrdering getDecodedOrdering(unsigned Val) { |
| 1141 | switch (Val) { |
| 1142 | case bitc::ORDERING_NOTATOMIC: return AtomicOrdering::NotAtomic; |
| 1143 | case bitc::ORDERING_UNORDERED: return AtomicOrdering::Unordered; |
| 1144 | case bitc::ORDERING_MONOTONIC: return AtomicOrdering::Monotonic; |
| 1145 | case bitc::ORDERING_ACQUIRE: return AtomicOrdering::Acquire; |
| 1146 | case bitc::ORDERING_RELEASE: return AtomicOrdering::Release; |
| 1147 | case bitc::ORDERING_ACQREL: return AtomicOrdering::AcquireRelease; |
| 1148 | default: // Map unknown orderings to sequentially-consistent. |
| 1149 | case bitc::ORDERING_SEQCST: return AtomicOrdering::SequentiallyConsistent; |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | static Comdat::SelectionKind getDecodedComdatSelectionKind(unsigned Val) { |
| 1154 | switch (Val) { |
| 1155 | default: // Map unknown selection kinds to any. |
| 1156 | case bitc::COMDAT_SELECTION_KIND_ANY: |
| 1157 | return Comdat::Any; |
| 1158 | case bitc::COMDAT_SELECTION_KIND_EXACT_MATCH: |
| 1159 | return Comdat::ExactMatch; |
| 1160 | case bitc::COMDAT_SELECTION_KIND_LARGEST: |
| 1161 | return Comdat::Largest; |
| 1162 | case bitc::COMDAT_SELECTION_KIND_NO_DUPLICATES: |
| 1163 | return Comdat::NoDuplicates; |
| 1164 | case bitc::COMDAT_SELECTION_KIND_SAME_SIZE: |
| 1165 | return Comdat::SameSize; |
| 1166 | } |
| 1167 | } |
| 1168 | |
| 1169 | static FastMathFlags getDecodedFastMathFlags(unsigned Val) { |
| 1170 | FastMathFlags FMF; |
| 1171 | if (0 != (Val & bitc::UnsafeAlgebra)) |
| 1172 | FMF.setFast(); |
| 1173 | if (0 != (Val & bitc::AllowReassoc)) |
| 1174 | FMF.setAllowReassoc(); |
| 1175 | if (0 != (Val & bitc::NoNaNs)) |
| 1176 | FMF.setNoNaNs(); |
| 1177 | if (0 != (Val & bitc::NoInfs)) |
| 1178 | FMF.setNoInfs(); |
| 1179 | if (0 != (Val & bitc::NoSignedZeros)) |
| 1180 | FMF.setNoSignedZeros(); |
| 1181 | if (0 != (Val & bitc::AllowReciprocal)) |
| 1182 | FMF.setAllowReciprocal(); |
| 1183 | if (0 != (Val & bitc::AllowContract)) |
| 1184 | FMF.setAllowContract(true); |
| 1185 | if (0 != (Val & bitc::ApproxFunc)) |
| 1186 | FMF.setApproxFunc(); |
| 1187 | return FMF; |
| 1188 | } |
| 1189 | |
| 1190 | static void upgradeDLLImportExportLinkage(GlobalValue *GV, unsigned Val) { |
| 1191 | switch (Val) { |
| 1192 | case 5: GV->setDLLStorageClass(GlobalValue::DLLImportStorageClass); break; |
| 1193 | case 6: GV->setDLLStorageClass(GlobalValue::DLLExportStorageClass); break; |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | Type *BitcodeReader::getFullyStructuredTypeByID(unsigned ID) { |
| 1198 | // The type table size is always specified correctly. |
| 1199 | if (ID >= TypeList.size()) |
| 1200 | return nullptr; |
| 1201 | |
| 1202 | if (Type *Ty = TypeList[ID]) |
| 1203 | return Ty; |
| 1204 | |
| 1205 | // If we have a forward reference, the only possible case is when it is to a |
| 1206 | // named struct. Just create a placeholder for now. |
| 1207 | return TypeList[ID] = createIdentifiedStructType(Context); |
| 1208 | } |
| 1209 | |
| 1210 | StructType *BitcodeReader::createIdentifiedStructType(LLVMContext &Context, |
| 1211 | StringRef Name) { |
| 1212 | auto *Ret = StructType::create(Context, Name); |
| 1213 | IdentifiedStructTypes.push_back(Ret); |
| 1214 | return Ret; |
| 1215 | } |
| 1216 | |
| 1217 | StructType *BitcodeReader::createIdentifiedStructType(LLVMContext &Context) { |
| 1218 | auto *Ret = StructType::create(Context); |
| 1219 | IdentifiedStructTypes.push_back(Ret); |
| 1220 | return Ret; |
| 1221 | } |
| 1222 | |
| 1223 | //===----------------------------------------------------------------------===// |
| 1224 | // Functions for parsing blocks from the bitcode file |
| 1225 | //===----------------------------------------------------------------------===// |
| 1226 | |
| 1227 | static uint64_t getRawAttributeMask(Attribute::AttrKind Val) { |
| 1228 | switch (Val) { |
| 1229 | case Attribute::EndAttrKinds: |
| 1230 | case Attribute::EmptyKey: |
| 1231 | case Attribute::TombstoneKey: |
| 1232 | llvm_unreachable("Synthetic enumerators which should never get here")::llvm::llvm_unreachable_internal("Synthetic enumerators which should never get here" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1232); |
| 1233 | |
| 1234 | case Attribute::None: return 0; |
| 1235 | case Attribute::ZExt: return 1 << 0; |
| 1236 | case Attribute::SExt: return 1 << 1; |
| 1237 | case Attribute::NoReturn: return 1 << 2; |
| 1238 | case Attribute::InReg: return 1 << 3; |
| 1239 | case Attribute::StructRet: return 1 << 4; |
| 1240 | case Attribute::NoUnwind: return 1 << 5; |
| 1241 | case Attribute::NoAlias: return 1 << 6; |
| 1242 | case Attribute::ByVal: return 1 << 7; |
| 1243 | case Attribute::Nest: return 1 << 8; |
| 1244 | case Attribute::ReadNone: return 1 << 9; |
| 1245 | case Attribute::ReadOnly: return 1 << 10; |
| 1246 | case Attribute::NoInline: return 1 << 11; |
| 1247 | case Attribute::AlwaysInline: return 1 << 12; |
| 1248 | case Attribute::OptimizeForSize: return 1 << 13; |
| 1249 | case Attribute::StackProtect: return 1 << 14; |
| 1250 | case Attribute::StackProtectReq: return 1 << 15; |
| 1251 | case Attribute::Alignment: return 31 << 16; |
| 1252 | case Attribute::NoCapture: return 1 << 21; |
| 1253 | case Attribute::NoRedZone: return 1 << 22; |
| 1254 | case Attribute::NoImplicitFloat: return 1 << 23; |
| 1255 | case Attribute::Naked: return 1 << 24; |
| 1256 | case Attribute::InlineHint: return 1 << 25; |
| 1257 | case Attribute::StackAlignment: return 7 << 26; |
| 1258 | case Attribute::ReturnsTwice: return 1 << 29; |
| 1259 | case Attribute::UWTable: return 1 << 30; |
| 1260 | case Attribute::NonLazyBind: return 1U << 31; |
| 1261 | case Attribute::SanitizeAddress: return 1ULL << 32; |
| 1262 | case Attribute::MinSize: return 1ULL << 33; |
| 1263 | case Attribute::NoDuplicate: return 1ULL << 34; |
| 1264 | case Attribute::StackProtectStrong: return 1ULL << 35; |
| 1265 | case Attribute::SanitizeThread: return 1ULL << 36; |
| 1266 | case Attribute::SanitizeMemory: return 1ULL << 37; |
| 1267 | case Attribute::NoBuiltin: return 1ULL << 38; |
| 1268 | case Attribute::Returned: return 1ULL << 39; |
| 1269 | case Attribute::Cold: return 1ULL << 40; |
| 1270 | case Attribute::Builtin: return 1ULL << 41; |
| 1271 | case Attribute::OptimizeNone: return 1ULL << 42; |
| 1272 | case Attribute::InAlloca: return 1ULL << 43; |
| 1273 | case Attribute::NonNull: return 1ULL << 44; |
| 1274 | case Attribute::JumpTable: return 1ULL << 45; |
| 1275 | case Attribute::Convergent: return 1ULL << 46; |
| 1276 | case Attribute::SafeStack: return 1ULL << 47; |
| 1277 | case Attribute::NoRecurse: return 1ULL << 48; |
| 1278 | case Attribute::InaccessibleMemOnly: return 1ULL << 49; |
| 1279 | case Attribute::InaccessibleMemOrArgMemOnly: return 1ULL << 50; |
| 1280 | case Attribute::SwiftSelf: return 1ULL << 51; |
| 1281 | case Attribute::SwiftError: return 1ULL << 52; |
| 1282 | case Attribute::WriteOnly: return 1ULL << 53; |
| 1283 | case Attribute::Speculatable: return 1ULL << 54; |
| 1284 | case Attribute::StrictFP: return 1ULL << 55; |
| 1285 | case Attribute::SanitizeHWAddress: return 1ULL << 56; |
| 1286 | case Attribute::NoCfCheck: return 1ULL << 57; |
| 1287 | case Attribute::OptForFuzzing: return 1ULL << 58; |
| 1288 | case Attribute::ShadowCallStack: return 1ULL << 59; |
| 1289 | case Attribute::SpeculativeLoadHardening: |
| 1290 | return 1ULL << 60; |
| 1291 | case Attribute::ImmArg: |
| 1292 | return 1ULL << 61; |
| 1293 | case Attribute::WillReturn: |
| 1294 | return 1ULL << 62; |
| 1295 | case Attribute::NoFree: |
| 1296 | return 1ULL << 63; |
| 1297 | default: |
| 1298 | // Other attributes are not supported in the raw format, |
| 1299 | // as we ran out of space. |
| 1300 | return 0; |
| 1301 | } |
| 1302 | llvm_unreachable("Unsupported attribute type")::llvm::llvm_unreachable_internal("Unsupported attribute type" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1302); |
| 1303 | } |
| 1304 | |
| 1305 | static void addRawAttributeValue(AttrBuilder &B, uint64_t Val) { |
| 1306 | if (!Val) return; |
| 1307 | |
| 1308 | for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds; |
| 1309 | I = Attribute::AttrKind(I + 1)) { |
| 1310 | if (uint64_t A = (Val & getRawAttributeMask(I))) { |
| 1311 | if (I == Attribute::Alignment) |
| 1312 | B.addAlignmentAttr(1ULL << ((A >> 16) - 1)); |
| 1313 | else if (I == Attribute::StackAlignment) |
| 1314 | B.addStackAlignmentAttr(1ULL << ((A >> 26)-1)); |
| 1315 | else |
| 1316 | B.addAttribute(I); |
| 1317 | } |
| 1318 | } |
| 1319 | } |
| 1320 | |
| 1321 | /// This fills an AttrBuilder object with the LLVM attributes that have |
| 1322 | /// been decoded from the given integer. This function must stay in sync with |
| 1323 | /// 'encodeLLVMAttributesForBitcode'. |
| 1324 | static void decodeLLVMAttributesForBitcode(AttrBuilder &B, |
| 1325 | uint64_t EncodedAttrs) { |
| 1326 | // The alignment is stored as a 16-bit raw value from bits 31--16. We shift |
| 1327 | // the bits above 31 down by 11 bits. |
| 1328 | unsigned Alignment = (EncodedAttrs & (0xffffULL << 16)) >> 16; |
| 1329 | assert((!Alignment || isPowerOf2_32(Alignment)) &&(static_cast <bool> ((!Alignment || isPowerOf2_32(Alignment )) && "Alignment must be a power of two.") ? void (0) : __assert_fail ("(!Alignment || isPowerOf2_32(Alignment)) && \"Alignment must be a power of two.\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1330, __extension__ __PRETTY_FUNCTION__)) |
| 1330 | "Alignment must be a power of two.")(static_cast <bool> ((!Alignment || isPowerOf2_32(Alignment )) && "Alignment must be a power of two.") ? void (0) : __assert_fail ("(!Alignment || isPowerOf2_32(Alignment)) && \"Alignment must be a power of two.\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1330, __extension__ __PRETTY_FUNCTION__)); |
| 1331 | |
| 1332 | if (Alignment) |
| 1333 | B.addAlignmentAttr(Alignment); |
| 1334 | addRawAttributeValue(B, ((EncodedAttrs & (0xfffffULL << 32)) >> 11) | |
| 1335 | (EncodedAttrs & 0xffff)); |
| 1336 | } |
| 1337 | |
| 1338 | Error BitcodeReader::parseAttributeBlock() { |
| 1339 | if (Error Err = Stream.EnterSubBlock(bitc::PARAMATTR_BLOCK_ID)) |
| 1340 | return Err; |
| 1341 | |
| 1342 | if (!MAttributes.empty()) |
| 1343 | return error("Invalid multiple blocks"); |
| 1344 | |
| 1345 | SmallVector<uint64_t, 64> Record; |
| 1346 | |
| 1347 | SmallVector<AttributeList, 8> Attrs; |
| 1348 | |
| 1349 | // Read all the records. |
| 1350 | while (true) { |
| 1351 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 1352 | if (!MaybeEntry) |
| 1353 | return MaybeEntry.takeError(); |
| 1354 | BitstreamEntry Entry = MaybeEntry.get(); |
| 1355 | |
| 1356 | switch (Entry.Kind) { |
| 1357 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 1358 | case BitstreamEntry::Error: |
| 1359 | return error("Malformed block"); |
| 1360 | case BitstreamEntry::EndBlock: |
| 1361 | return Error::success(); |
| 1362 | case BitstreamEntry::Record: |
| 1363 | // The interesting case. |
| 1364 | break; |
| 1365 | } |
| 1366 | |
| 1367 | // Read a record. |
| 1368 | Record.clear(); |
| 1369 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 1370 | if (!MaybeRecord) |
| 1371 | return MaybeRecord.takeError(); |
| 1372 | switch (MaybeRecord.get()) { |
| 1373 | default: // Default behavior: ignore. |
| 1374 | break; |
| 1375 | case bitc::PARAMATTR_CODE_ENTRY_OLD: // ENTRY: [paramidx0, attr0, ...] |
| 1376 | // Deprecated, but still needed to read old bitcode files. |
| 1377 | if (Record.size() & 1) |
| 1378 | return error("Invalid record"); |
| 1379 | |
| 1380 | for (unsigned i = 0, e = Record.size(); i != e; i += 2) { |
| 1381 | AttrBuilder B; |
| 1382 | decodeLLVMAttributesForBitcode(B, Record[i+1]); |
| 1383 | Attrs.push_back(AttributeList::get(Context, Record[i], B)); |
| 1384 | } |
| 1385 | |
| 1386 | MAttributes.push_back(AttributeList::get(Context, Attrs)); |
| 1387 | Attrs.clear(); |
| 1388 | break; |
| 1389 | case bitc::PARAMATTR_CODE_ENTRY: // ENTRY: [attrgrp0, attrgrp1, ...] |
| 1390 | for (unsigned i = 0, e = Record.size(); i != e; ++i) |
| 1391 | Attrs.push_back(MAttributeGroups[Record[i]]); |
| 1392 | |
| 1393 | MAttributes.push_back(AttributeList::get(Context, Attrs)); |
| 1394 | Attrs.clear(); |
| 1395 | break; |
| 1396 | } |
| 1397 | } |
| 1398 | } |
| 1399 | |
| 1400 | // Returns Attribute::None on unrecognized codes. |
| 1401 | static Attribute::AttrKind getAttrFromCode(uint64_t Code) { |
| 1402 | switch (Code) { |
| 1403 | default: |
| 1404 | return Attribute::None; |
| 1405 | case bitc::ATTR_KIND_ALIGNMENT: |
| 1406 | return Attribute::Alignment; |
| 1407 | case bitc::ATTR_KIND_ALWAYS_INLINE: |
| 1408 | return Attribute::AlwaysInline; |
| 1409 | case bitc::ATTR_KIND_ARGMEMONLY: |
| 1410 | return Attribute::ArgMemOnly; |
| 1411 | case bitc::ATTR_KIND_BUILTIN: |
| 1412 | return Attribute::Builtin; |
| 1413 | case bitc::ATTR_KIND_BY_VAL: |
| 1414 | return Attribute::ByVal; |
| 1415 | case bitc::ATTR_KIND_IN_ALLOCA: |
| 1416 | return Attribute::InAlloca; |
| 1417 | case bitc::ATTR_KIND_COLD: |
| 1418 | return Attribute::Cold; |
| 1419 | case bitc::ATTR_KIND_CONVERGENT: |
| 1420 | return Attribute::Convergent; |
| 1421 | case bitc::ATTR_KIND_INACCESSIBLEMEM_ONLY: |
| 1422 | return Attribute::InaccessibleMemOnly; |
| 1423 | case bitc::ATTR_KIND_INACCESSIBLEMEM_OR_ARGMEMONLY: |
| 1424 | return Attribute::InaccessibleMemOrArgMemOnly; |
| 1425 | case bitc::ATTR_KIND_INLINE_HINT: |
| 1426 | return Attribute::InlineHint; |
| 1427 | case bitc::ATTR_KIND_IN_REG: |
| 1428 | return Attribute::InReg; |
| 1429 | case bitc::ATTR_KIND_JUMP_TABLE: |
| 1430 | return Attribute::JumpTable; |
| 1431 | case bitc::ATTR_KIND_MIN_SIZE: |
| 1432 | return Attribute::MinSize; |
| 1433 | case bitc::ATTR_KIND_NAKED: |
| 1434 | return Attribute::Naked; |
| 1435 | case bitc::ATTR_KIND_NEST: |
| 1436 | return Attribute::Nest; |
| 1437 | case bitc::ATTR_KIND_NO_ALIAS: |
| 1438 | return Attribute::NoAlias; |
| 1439 | case bitc::ATTR_KIND_NO_BUILTIN: |
| 1440 | return Attribute::NoBuiltin; |
| 1441 | case bitc::ATTR_KIND_NO_CALLBACK: |
| 1442 | return Attribute::NoCallback; |
| 1443 | case bitc::ATTR_KIND_NO_CAPTURE: |
| 1444 | return Attribute::NoCapture; |
| 1445 | case bitc::ATTR_KIND_NO_DUPLICATE: |
| 1446 | return Attribute::NoDuplicate; |
| 1447 | case bitc::ATTR_KIND_NOFREE: |
| 1448 | return Attribute::NoFree; |
| 1449 | case bitc::ATTR_KIND_NO_IMPLICIT_FLOAT: |
| 1450 | return Attribute::NoImplicitFloat; |
| 1451 | case bitc::ATTR_KIND_NO_INLINE: |
| 1452 | return Attribute::NoInline; |
| 1453 | case bitc::ATTR_KIND_NO_RECURSE: |
| 1454 | return Attribute::NoRecurse; |
| 1455 | case bitc::ATTR_KIND_NO_MERGE: |
| 1456 | return Attribute::NoMerge; |
| 1457 | case bitc::ATTR_KIND_NON_LAZY_BIND: |
| 1458 | return Attribute::NonLazyBind; |
| 1459 | case bitc::ATTR_KIND_NON_NULL: |
| 1460 | return Attribute::NonNull; |
| 1461 | case bitc::ATTR_KIND_DEREFERENCEABLE: |
| 1462 | return Attribute::Dereferenceable; |
| 1463 | case bitc::ATTR_KIND_DEREFERENCEABLE_OR_NULL: |
| 1464 | return Attribute::DereferenceableOrNull; |
| 1465 | case bitc::ATTR_KIND_ALLOC_SIZE: |
| 1466 | return Attribute::AllocSize; |
| 1467 | case bitc::ATTR_KIND_NO_RED_ZONE: |
| 1468 | return Attribute::NoRedZone; |
| 1469 | case bitc::ATTR_KIND_NO_RETURN: |
| 1470 | return Attribute::NoReturn; |
| 1471 | case bitc::ATTR_KIND_NOSYNC: |
| 1472 | return Attribute::NoSync; |
| 1473 | case bitc::ATTR_KIND_NOCF_CHECK: |
| 1474 | return Attribute::NoCfCheck; |
| 1475 | case bitc::ATTR_KIND_NO_UNWIND: |
| 1476 | return Attribute::NoUnwind; |
| 1477 | case bitc::ATTR_KIND_NO_SANITIZE_COVERAGE: |
| 1478 | return Attribute::NoSanitizeCoverage; |
| 1479 | case bitc::ATTR_KIND_NULL_POINTER_IS_VALID: |
| 1480 | return Attribute::NullPointerIsValid; |
| 1481 | case bitc::ATTR_KIND_OPT_FOR_FUZZING: |
| 1482 | return Attribute::OptForFuzzing; |
| 1483 | case bitc::ATTR_KIND_OPTIMIZE_FOR_SIZE: |
| 1484 | return Attribute::OptimizeForSize; |
| 1485 | case bitc::ATTR_KIND_OPTIMIZE_NONE: |
| 1486 | return Attribute::OptimizeNone; |
| 1487 | case bitc::ATTR_KIND_READ_NONE: |
| 1488 | return Attribute::ReadNone; |
| 1489 | case bitc::ATTR_KIND_READ_ONLY: |
| 1490 | return Attribute::ReadOnly; |
| 1491 | case bitc::ATTR_KIND_RETURNED: |
| 1492 | return Attribute::Returned; |
| 1493 | case bitc::ATTR_KIND_RETURNS_TWICE: |
| 1494 | return Attribute::ReturnsTwice; |
| 1495 | case bitc::ATTR_KIND_S_EXT: |
| 1496 | return Attribute::SExt; |
| 1497 | case bitc::ATTR_KIND_SPECULATABLE: |
| 1498 | return Attribute::Speculatable; |
| 1499 | case bitc::ATTR_KIND_STACK_ALIGNMENT: |
| 1500 | return Attribute::StackAlignment; |
| 1501 | case bitc::ATTR_KIND_STACK_PROTECT: |
| 1502 | return Attribute::StackProtect; |
| 1503 | case bitc::ATTR_KIND_STACK_PROTECT_REQ: |
| 1504 | return Attribute::StackProtectReq; |
| 1505 | case bitc::ATTR_KIND_STACK_PROTECT_STRONG: |
| 1506 | return Attribute::StackProtectStrong; |
| 1507 | case bitc::ATTR_KIND_SAFESTACK: |
| 1508 | return Attribute::SafeStack; |
| 1509 | case bitc::ATTR_KIND_SHADOWCALLSTACK: |
| 1510 | return Attribute::ShadowCallStack; |
| 1511 | case bitc::ATTR_KIND_STRICT_FP: |
| 1512 | return Attribute::StrictFP; |
| 1513 | case bitc::ATTR_KIND_STRUCT_RET: |
| 1514 | return Attribute::StructRet; |
| 1515 | case bitc::ATTR_KIND_SANITIZE_ADDRESS: |
| 1516 | return Attribute::SanitizeAddress; |
| 1517 | case bitc::ATTR_KIND_SANITIZE_HWADDRESS: |
| 1518 | return Attribute::SanitizeHWAddress; |
| 1519 | case bitc::ATTR_KIND_SANITIZE_THREAD: |
| 1520 | return Attribute::SanitizeThread; |
| 1521 | case bitc::ATTR_KIND_SANITIZE_MEMORY: |
| 1522 | return Attribute::SanitizeMemory; |
| 1523 | case bitc::ATTR_KIND_SPECULATIVE_LOAD_HARDENING: |
| 1524 | return Attribute::SpeculativeLoadHardening; |
| 1525 | case bitc::ATTR_KIND_SWIFT_ERROR: |
| 1526 | return Attribute::SwiftError; |
| 1527 | case bitc::ATTR_KIND_SWIFT_SELF: |
| 1528 | return Attribute::SwiftSelf; |
| 1529 | case bitc::ATTR_KIND_SWIFT_ASYNC: |
| 1530 | return Attribute::SwiftAsync; |
| 1531 | case bitc::ATTR_KIND_UW_TABLE: |
| 1532 | return Attribute::UWTable; |
| 1533 | case bitc::ATTR_KIND_VSCALE_RANGE: |
| 1534 | return Attribute::VScaleRange; |
| 1535 | case bitc::ATTR_KIND_WILLRETURN: |
| 1536 | return Attribute::WillReturn; |
| 1537 | case bitc::ATTR_KIND_WRITEONLY: |
| 1538 | return Attribute::WriteOnly; |
| 1539 | case bitc::ATTR_KIND_Z_EXT: |
| 1540 | return Attribute::ZExt; |
| 1541 | case bitc::ATTR_KIND_IMMARG: |
| 1542 | return Attribute::ImmArg; |
| 1543 | case bitc::ATTR_KIND_SANITIZE_MEMTAG: |
| 1544 | return Attribute::SanitizeMemTag; |
| 1545 | case bitc::ATTR_KIND_PREALLOCATED: |
| 1546 | return Attribute::Preallocated; |
| 1547 | case bitc::ATTR_KIND_NOUNDEF: |
| 1548 | return Attribute::NoUndef; |
| 1549 | case bitc::ATTR_KIND_BYREF: |
| 1550 | return Attribute::ByRef; |
| 1551 | case bitc::ATTR_KIND_MUSTPROGRESS: |
| 1552 | return Attribute::MustProgress; |
| 1553 | case bitc::ATTR_KIND_HOT: |
| 1554 | return Attribute::Hot; |
| 1555 | } |
| 1556 | } |
| 1557 | |
| 1558 | Error BitcodeReader::parseAlignmentValue(uint64_t Exponent, |
| 1559 | MaybeAlign &Alignment) { |
| 1560 | // Note: Alignment in bitcode files is incremented by 1, so that zero |
| 1561 | // can be used for default alignment. |
| 1562 | if (Exponent > Value::MaxAlignmentExponent + 1) |
| 1563 | return error("Invalid alignment value"); |
| 1564 | Alignment = decodeMaybeAlign(Exponent); |
| 1565 | return Error::success(); |
| 1566 | } |
| 1567 | |
| 1568 | Error BitcodeReader::parseAttrKind(uint64_t Code, Attribute::AttrKind *Kind) { |
| 1569 | *Kind = getAttrFromCode(Code); |
| 1570 | if (*Kind == Attribute::None) |
| 1571 | return error("Unknown attribute kind (" + Twine(Code) + ")"); |
| 1572 | return Error::success(); |
| 1573 | } |
| 1574 | |
| 1575 | Error BitcodeReader::parseAttributeGroupBlock() { |
| 1576 | if (Error Err = Stream.EnterSubBlock(bitc::PARAMATTR_GROUP_BLOCK_ID)) |
| 1577 | return Err; |
| 1578 | |
| 1579 | if (!MAttributeGroups.empty()) |
| 1580 | return error("Invalid multiple blocks"); |
| 1581 | |
| 1582 | SmallVector<uint64_t, 64> Record; |
| 1583 | |
| 1584 | // Read all the records. |
| 1585 | while (true) { |
| 1586 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 1587 | if (!MaybeEntry) |
| 1588 | return MaybeEntry.takeError(); |
| 1589 | BitstreamEntry Entry = MaybeEntry.get(); |
| 1590 | |
| 1591 | switch (Entry.Kind) { |
| 1592 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 1593 | case BitstreamEntry::Error: |
| 1594 | return error("Malformed block"); |
| 1595 | case BitstreamEntry::EndBlock: |
| 1596 | return Error::success(); |
| 1597 | case BitstreamEntry::Record: |
| 1598 | // The interesting case. |
| 1599 | break; |
| 1600 | } |
| 1601 | |
| 1602 | // Read a record. |
| 1603 | Record.clear(); |
| 1604 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 1605 | if (!MaybeRecord) |
| 1606 | return MaybeRecord.takeError(); |
| 1607 | switch (MaybeRecord.get()) { |
| 1608 | default: // Default behavior: ignore. |
| 1609 | break; |
| 1610 | case bitc::PARAMATTR_GRP_CODE_ENTRY: { // ENTRY: [grpid, idx, a0, a1, ...] |
| 1611 | if (Record.size() < 3) |
| 1612 | return error("Invalid record"); |
| 1613 | |
| 1614 | uint64_t GrpID = Record[0]; |
| 1615 | uint64_t Idx = Record[1]; // Index of the object this attribute refers to. |
| 1616 | |
| 1617 | AttrBuilder B; |
| 1618 | for (unsigned i = 2, e = Record.size(); i != e; ++i) { |
| 1619 | if (Record[i] == 0) { // Enum attribute |
| 1620 | Attribute::AttrKind Kind; |
| 1621 | if (Error Err = parseAttrKind(Record[++i], &Kind)) |
| 1622 | return Err; |
| 1623 | |
| 1624 | // Upgrade old-style byval attribute to one with a type, even if it's |
| 1625 | // nullptr. We will have to insert the real type when we associate |
| 1626 | // this AttributeList with a function. |
| 1627 | if (Kind == Attribute::ByVal) |
| 1628 | B.addByValAttr(nullptr); |
| 1629 | else if (Kind == Attribute::StructRet) |
| 1630 | B.addStructRetAttr(nullptr); |
| 1631 | else if (Kind == Attribute::InAlloca) |
| 1632 | B.addInAllocaAttr(nullptr); |
| 1633 | |
| 1634 | B.addAttribute(Kind); |
| 1635 | } else if (Record[i] == 1) { // Integer attribute |
| 1636 | Attribute::AttrKind Kind; |
| 1637 | if (Error Err = parseAttrKind(Record[++i], &Kind)) |
| 1638 | return Err; |
| 1639 | if (Kind == Attribute::Alignment) |
| 1640 | B.addAlignmentAttr(Record[++i]); |
| 1641 | else if (Kind == Attribute::StackAlignment) |
| 1642 | B.addStackAlignmentAttr(Record[++i]); |
| 1643 | else if (Kind == Attribute::Dereferenceable) |
| 1644 | B.addDereferenceableAttr(Record[++i]); |
| 1645 | else if (Kind == Attribute::DereferenceableOrNull) |
| 1646 | B.addDereferenceableOrNullAttr(Record[++i]); |
| 1647 | else if (Kind == Attribute::AllocSize) |
| 1648 | B.addAllocSizeAttrFromRawRepr(Record[++i]); |
| 1649 | else if (Kind == Attribute::VScaleRange) |
| 1650 | B.addVScaleRangeAttrFromRawRepr(Record[++i]); |
| 1651 | } else if (Record[i] == 3 || Record[i] == 4) { // String attribute |
| 1652 | bool HasValue = (Record[i++] == 4); |
| 1653 | SmallString<64> KindStr; |
| 1654 | SmallString<64> ValStr; |
| 1655 | |
| 1656 | while (Record[i] != 0 && i != e) |
| 1657 | KindStr += Record[i++]; |
| 1658 | assert(Record[i] == 0 && "Kind string not null terminated")(static_cast <bool> (Record[i] == 0 && "Kind string not null terminated" ) ? void (0) : __assert_fail ("Record[i] == 0 && \"Kind string not null terminated\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1658, __extension__ __PRETTY_FUNCTION__)); |
| 1659 | |
| 1660 | if (HasValue) { |
| 1661 | // Has a value associated with it. |
| 1662 | ++i; // Skip the '0' that terminates the "kind" string. |
| 1663 | while (Record[i] != 0 && i != e) |
| 1664 | ValStr += Record[i++]; |
| 1665 | assert(Record[i] == 0 && "Value string not null terminated")(static_cast <bool> (Record[i] == 0 && "Value string not null terminated" ) ? void (0) : __assert_fail ("Record[i] == 0 && \"Value string not null terminated\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1665, __extension__ __PRETTY_FUNCTION__)); |
| 1666 | } |
| 1667 | |
| 1668 | B.addAttribute(KindStr.str(), ValStr.str()); |
| 1669 | } else { |
| 1670 | assert((Record[i] == 5 || Record[i] == 6) &&(static_cast <bool> ((Record[i] == 5 || Record[i] == 6) && "Invalid attribute group entry") ? void (0) : __assert_fail ("(Record[i] == 5 || Record[i] == 6) && \"Invalid attribute group entry\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1671, __extension__ __PRETTY_FUNCTION__)) |
| 1671 | "Invalid attribute group entry")(static_cast <bool> ((Record[i] == 5 || Record[i] == 6) && "Invalid attribute group entry") ? void (0) : __assert_fail ("(Record[i] == 5 || Record[i] == 6) && \"Invalid attribute group entry\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1671, __extension__ __PRETTY_FUNCTION__)); |
| 1672 | bool HasType = Record[i] == 6; |
| 1673 | Attribute::AttrKind Kind; |
| 1674 | if (Error Err = parseAttrKind(Record[++i], &Kind)) |
| 1675 | return Err; |
| 1676 | if (Kind == Attribute::ByVal) { |
| 1677 | B.addByValAttr(HasType ? getTypeByID(Record[++i]) : nullptr); |
| 1678 | } else if (Kind == Attribute::StructRet) { |
| 1679 | B.addStructRetAttr(HasType ? getTypeByID(Record[++i]) : nullptr); |
| 1680 | } else if (Kind == Attribute::ByRef) { |
| 1681 | B.addByRefAttr(getTypeByID(Record[++i])); |
| 1682 | } else if (Kind == Attribute::Preallocated) { |
| 1683 | B.addPreallocatedAttr(getTypeByID(Record[++i])); |
| 1684 | } else if (Kind == Attribute::InAlloca) { |
| 1685 | B.addInAllocaAttr(HasType ? getTypeByID(Record[++i]) : nullptr); |
| 1686 | } |
| 1687 | } |
| 1688 | } |
| 1689 | |
| 1690 | UpgradeAttributes(B); |
| 1691 | MAttributeGroups[GrpID] = AttributeList::get(Context, Idx, B); |
| 1692 | break; |
| 1693 | } |
| 1694 | } |
| 1695 | } |
| 1696 | } |
| 1697 | |
| 1698 | Error BitcodeReader::parseTypeTable() { |
| 1699 | if (Error Err = Stream.EnterSubBlock(bitc::TYPE_BLOCK_ID_NEW)) |
| 1700 | return Err; |
| 1701 | |
| 1702 | return parseTypeTableBody(); |
| 1703 | } |
| 1704 | |
| 1705 | Error BitcodeReader::parseTypeTableBody() { |
| 1706 | if (!TypeList.empty()) |
| 1707 | return error("Invalid multiple blocks"); |
| 1708 | |
| 1709 | SmallVector<uint64_t, 64> Record; |
| 1710 | unsigned NumRecords = 0; |
| 1711 | |
| 1712 | SmallString<64> TypeName; |
| 1713 | |
| 1714 | // Read all the records for this type table. |
| 1715 | while (true) { |
| 1716 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 1717 | if (!MaybeEntry) |
| 1718 | return MaybeEntry.takeError(); |
| 1719 | BitstreamEntry Entry = MaybeEntry.get(); |
| 1720 | |
| 1721 | switch (Entry.Kind) { |
| 1722 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 1723 | case BitstreamEntry::Error: |
| 1724 | return error("Malformed block"); |
| 1725 | case BitstreamEntry::EndBlock: |
| 1726 | if (NumRecords != TypeList.size()) |
| 1727 | return error("Malformed block"); |
| 1728 | return Error::success(); |
| 1729 | case BitstreamEntry::Record: |
| 1730 | // The interesting case. |
| 1731 | break; |
| 1732 | } |
| 1733 | |
| 1734 | // Read a record. |
| 1735 | Record.clear(); |
| 1736 | Type *ResultTy = nullptr; |
| 1737 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 1738 | if (!MaybeRecord) |
| 1739 | return MaybeRecord.takeError(); |
| 1740 | switch (MaybeRecord.get()) { |
| 1741 | default: |
| 1742 | return error("Invalid value"); |
| 1743 | case bitc::TYPE_CODE_NUMENTRY: // TYPE_CODE_NUMENTRY: [numentries] |
| 1744 | // TYPE_CODE_NUMENTRY contains a count of the number of types in the |
| 1745 | // type list. This allows us to reserve space. |
| 1746 | if (Record.empty()) |
| 1747 | return error("Invalid record"); |
| 1748 | TypeList.resize(Record[0]); |
| 1749 | continue; |
| 1750 | case bitc::TYPE_CODE_VOID: // VOID |
| 1751 | ResultTy = Type::getVoidTy(Context); |
| 1752 | break; |
| 1753 | case bitc::TYPE_CODE_HALF: // HALF |
| 1754 | ResultTy = Type::getHalfTy(Context); |
| 1755 | break; |
| 1756 | case bitc::TYPE_CODE_BFLOAT: // BFLOAT |
| 1757 | ResultTy = Type::getBFloatTy(Context); |
| 1758 | break; |
| 1759 | case bitc::TYPE_CODE_FLOAT: // FLOAT |
| 1760 | ResultTy = Type::getFloatTy(Context); |
| 1761 | break; |
| 1762 | case bitc::TYPE_CODE_DOUBLE: // DOUBLE |
| 1763 | ResultTy = Type::getDoubleTy(Context); |
| 1764 | break; |
| 1765 | case bitc::TYPE_CODE_X86_FP80: // X86_FP80 |
| 1766 | ResultTy = Type::getX86_FP80Ty(Context); |
| 1767 | break; |
| 1768 | case bitc::TYPE_CODE_FP128: // FP128 |
| 1769 | ResultTy = Type::getFP128Ty(Context); |
| 1770 | break; |
| 1771 | case bitc::TYPE_CODE_PPC_FP128: // PPC_FP128 |
| 1772 | ResultTy = Type::getPPC_FP128Ty(Context); |
| 1773 | break; |
| 1774 | case bitc::TYPE_CODE_LABEL: // LABEL |
| 1775 | ResultTy = Type::getLabelTy(Context); |
| 1776 | break; |
| 1777 | case bitc::TYPE_CODE_METADATA: // METADATA |
| 1778 | ResultTy = Type::getMetadataTy(Context); |
| 1779 | break; |
| 1780 | case bitc::TYPE_CODE_X86_MMX: // X86_MMX |
| 1781 | ResultTy = Type::getX86_MMXTy(Context); |
| 1782 | break; |
| 1783 | case bitc::TYPE_CODE_X86_AMX: // X86_AMX |
| 1784 | ResultTy = Type::getX86_AMXTy(Context); |
| 1785 | break; |
| 1786 | case bitc::TYPE_CODE_TOKEN: // TOKEN |
| 1787 | ResultTy = Type::getTokenTy(Context); |
| 1788 | break; |
| 1789 | case bitc::TYPE_CODE_INTEGER: { // INTEGER: [width] |
| 1790 | if (Record.empty()) |
| 1791 | return error("Invalid record"); |
| 1792 | |
| 1793 | uint64_t NumBits = Record[0]; |
| 1794 | if (NumBits < IntegerType::MIN_INT_BITS || |
| 1795 | NumBits > IntegerType::MAX_INT_BITS) |
| 1796 | return error("Bitwidth for integer type out of range"); |
| 1797 | ResultTy = IntegerType::get(Context, NumBits); |
| 1798 | break; |
| 1799 | } |
| 1800 | case bitc::TYPE_CODE_POINTER: { // POINTER: [pointee type] or |
| 1801 | // [pointee type, address space] |
| 1802 | if (Record.empty()) |
| 1803 | return error("Invalid record"); |
| 1804 | unsigned AddressSpace = 0; |
| 1805 | if (Record.size() == 2) |
| 1806 | AddressSpace = Record[1]; |
| 1807 | ResultTy = getTypeByID(Record[0]); |
| 1808 | if (!ResultTy || |
| 1809 | !PointerType::isValidElementType(ResultTy)) |
| 1810 | return error("Invalid type"); |
| 1811 | ResultTy = PointerType::get(ResultTy, AddressSpace); |
| 1812 | break; |
| 1813 | } |
| 1814 | case bitc::TYPE_CODE_OPAQUE_POINTER: { // OPAQUE_POINTER: [addrspace] |
| 1815 | if (Record.size() != 1) |
| 1816 | return error("Invalid record"); |
| 1817 | unsigned AddressSpace = Record[0]; |
| 1818 | ResultTy = PointerType::get(Context, AddressSpace); |
| 1819 | break; |
| 1820 | } |
| 1821 | case bitc::TYPE_CODE_FUNCTION_OLD: { |
| 1822 | // Deprecated, but still needed to read old bitcode files. |
| 1823 | // FUNCTION: [vararg, attrid, retty, paramty x N] |
| 1824 | if (Record.size() < 3) |
| 1825 | return error("Invalid record"); |
| 1826 | SmallVector<Type*, 8> ArgTys; |
| 1827 | for (unsigned i = 3, e = Record.size(); i != e; ++i) { |
| 1828 | if (Type *T = getTypeByID(Record[i])) |
| 1829 | ArgTys.push_back(T); |
| 1830 | else |
| 1831 | break; |
| 1832 | } |
| 1833 | |
| 1834 | ResultTy = getTypeByID(Record[2]); |
| 1835 | if (!ResultTy || ArgTys.size() < Record.size()-3) |
| 1836 | return error("Invalid type"); |
| 1837 | |
| 1838 | ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]); |
| 1839 | break; |
| 1840 | } |
| 1841 | case bitc::TYPE_CODE_FUNCTION: { |
| 1842 | // FUNCTION: [vararg, retty, paramty x N] |
| 1843 | if (Record.size() < 2) |
| 1844 | return error("Invalid record"); |
| 1845 | SmallVector<Type*, 8> ArgTys; |
| 1846 | for (unsigned i = 2, e = Record.size(); i != e; ++i) { |
| 1847 | if (Type *T = getTypeByID(Record[i])) { |
| 1848 | if (!FunctionType::isValidArgumentType(T)) |
| 1849 | return error("Invalid function argument type"); |
| 1850 | ArgTys.push_back(T); |
| 1851 | } |
| 1852 | else |
| 1853 | break; |
| 1854 | } |
| 1855 | |
| 1856 | ResultTy = getTypeByID(Record[1]); |
| 1857 | if (!ResultTy || ArgTys.size() < Record.size()-2) |
| 1858 | return error("Invalid type"); |
| 1859 | |
| 1860 | ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]); |
| 1861 | break; |
| 1862 | } |
| 1863 | case bitc::TYPE_CODE_STRUCT_ANON: { // STRUCT: [ispacked, eltty x N] |
| 1864 | if (Record.empty()) |
| 1865 | return error("Invalid record"); |
| 1866 | SmallVector<Type*, 8> EltTys; |
| 1867 | for (unsigned i = 1, e = Record.size(); i != e; ++i) { |
| 1868 | if (Type *T = getTypeByID(Record[i])) |
| 1869 | EltTys.push_back(T); |
| 1870 | else |
| 1871 | break; |
| 1872 | } |
| 1873 | if (EltTys.size() != Record.size()-1) |
| 1874 | return error("Invalid type"); |
| 1875 | ResultTy = StructType::get(Context, EltTys, Record[0]); |
| 1876 | break; |
| 1877 | } |
| 1878 | case bitc::TYPE_CODE_STRUCT_NAME: // STRUCT_NAME: [strchr x N] |
| 1879 | if (convertToString(Record, 0, TypeName)) |
| 1880 | return error("Invalid record"); |
| 1881 | continue; |
| 1882 | |
| 1883 | case bitc::TYPE_CODE_STRUCT_NAMED: { // STRUCT: [ispacked, eltty x N] |
| 1884 | if (Record.empty()) |
| 1885 | return error("Invalid record"); |
| 1886 | |
| 1887 | if (NumRecords >= TypeList.size()) |
| 1888 | return error("Invalid TYPE table"); |
| 1889 | |
| 1890 | // Check to see if this was forward referenced, if so fill in the temp. |
| 1891 | StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]); |
| 1892 | if (Res) { |
| 1893 | Res->setName(TypeName); |
| 1894 | TypeList[NumRecords] = nullptr; |
| 1895 | } else // Otherwise, create a new struct. |
| 1896 | Res = createIdentifiedStructType(Context, TypeName); |
| 1897 | TypeName.clear(); |
| 1898 | |
| 1899 | SmallVector<Type*, 8> EltTys; |
| 1900 | for (unsigned i = 1, e = Record.size(); i != e; ++i) { |
| 1901 | if (Type *T = getTypeByID(Record[i])) |
| 1902 | EltTys.push_back(T); |
| 1903 | else |
| 1904 | break; |
| 1905 | } |
| 1906 | if (EltTys.size() != Record.size()-1) |
| 1907 | return error("Invalid record"); |
| 1908 | Res->setBody(EltTys, Record[0]); |
| 1909 | ResultTy = Res; |
| 1910 | break; |
| 1911 | } |
| 1912 | case bitc::TYPE_CODE_OPAQUE: { // OPAQUE: [] |
| 1913 | if (Record.size() != 1) |
| 1914 | return error("Invalid record"); |
| 1915 | |
| 1916 | if (NumRecords >= TypeList.size()) |
| 1917 | return error("Invalid TYPE table"); |
| 1918 | |
| 1919 | // Check to see if this was forward referenced, if so fill in the temp. |
| 1920 | StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]); |
| 1921 | if (Res) { |
| 1922 | Res->setName(TypeName); |
| 1923 | TypeList[NumRecords] = nullptr; |
| 1924 | } else // Otherwise, create a new struct with no body. |
| 1925 | Res = createIdentifiedStructType(Context, TypeName); |
| 1926 | TypeName.clear(); |
| 1927 | ResultTy = Res; |
| 1928 | break; |
| 1929 | } |
| 1930 | case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty] |
| 1931 | if (Record.size() < 2) |
| 1932 | return error("Invalid record"); |
| 1933 | ResultTy = getTypeByID(Record[1]); |
| 1934 | if (!ResultTy || !ArrayType::isValidElementType(ResultTy)) |
| 1935 | return error("Invalid type"); |
| 1936 | ResultTy = ArrayType::get(ResultTy, Record[0]); |
| 1937 | break; |
| 1938 | case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty] or |
| 1939 | // [numelts, eltty, scalable] |
| 1940 | if (Record.size() < 2) |
| 1941 | return error("Invalid record"); |
| 1942 | if (Record[0] == 0) |
| 1943 | return error("Invalid vector length"); |
| 1944 | ResultTy = getTypeByID(Record[1]); |
| 1945 | if (!ResultTy || !StructType::isValidElementType(ResultTy)) |
| 1946 | return error("Invalid type"); |
| 1947 | bool Scalable = Record.size() > 2 ? Record[2] : false; |
| 1948 | ResultTy = VectorType::get(ResultTy, Record[0], Scalable); |
| 1949 | break; |
| 1950 | } |
| 1951 | |
| 1952 | if (NumRecords >= TypeList.size()) |
| 1953 | return error("Invalid TYPE table"); |
| 1954 | if (TypeList[NumRecords]) |
| 1955 | return error( |
| 1956 | "Invalid TYPE table: Only named structs can be forward referenced"); |
| 1957 | assert(ResultTy && "Didn't read a type?")(static_cast <bool> (ResultTy && "Didn't read a type?" ) ? void (0) : __assert_fail ("ResultTy && \"Didn't read a type?\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1957, __extension__ __PRETTY_FUNCTION__)); |
| 1958 | TypeList[NumRecords++] = ResultTy; |
| 1959 | } |
| 1960 | } |
| 1961 | |
| 1962 | Error BitcodeReader::parseOperandBundleTags() { |
| 1963 | if (Error Err = Stream.EnterSubBlock(bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID)) |
| 1964 | return Err; |
| 1965 | |
| 1966 | if (!BundleTags.empty()) |
| 1967 | return error("Invalid multiple blocks"); |
| 1968 | |
| 1969 | SmallVector<uint64_t, 64> Record; |
| 1970 | |
| 1971 | while (true) { |
| 1972 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 1973 | if (!MaybeEntry) |
| 1974 | return MaybeEntry.takeError(); |
| 1975 | BitstreamEntry Entry = MaybeEntry.get(); |
| 1976 | |
| 1977 | switch (Entry.Kind) { |
| 1978 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 1979 | case BitstreamEntry::Error: |
| 1980 | return error("Malformed block"); |
| 1981 | case BitstreamEntry::EndBlock: |
| 1982 | return Error::success(); |
| 1983 | case BitstreamEntry::Record: |
| 1984 | // The interesting case. |
| 1985 | break; |
| 1986 | } |
| 1987 | |
| 1988 | // Tags are implicitly mapped to integers by their order. |
| 1989 | |
| 1990 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 1991 | if (!MaybeRecord) |
| 1992 | return MaybeRecord.takeError(); |
| 1993 | if (MaybeRecord.get() != bitc::OPERAND_BUNDLE_TAG) |
| 1994 | return error("Invalid record"); |
| 1995 | |
| 1996 | // OPERAND_BUNDLE_TAG: [strchr x N] |
| 1997 | BundleTags.emplace_back(); |
| 1998 | if (convertToString(Record, 0, BundleTags.back())) |
| 1999 | return error("Invalid record"); |
| 2000 | Record.clear(); |
| 2001 | } |
| 2002 | } |
| 2003 | |
| 2004 | Error BitcodeReader::parseSyncScopeNames() { |
| 2005 | if (Error Err = Stream.EnterSubBlock(bitc::SYNC_SCOPE_NAMES_BLOCK_ID)) |
| 2006 | return Err; |
| 2007 | |
| 2008 | if (!SSIDs.empty()) |
| 2009 | return error("Invalid multiple synchronization scope names blocks"); |
| 2010 | |
| 2011 | SmallVector<uint64_t, 64> Record; |
| 2012 | while (true) { |
| 2013 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 2014 | if (!MaybeEntry) |
| 2015 | return MaybeEntry.takeError(); |
| 2016 | BitstreamEntry Entry = MaybeEntry.get(); |
| 2017 | |
| 2018 | switch (Entry.Kind) { |
| 2019 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 2020 | case BitstreamEntry::Error: |
| 2021 | return error("Malformed block"); |
| 2022 | case BitstreamEntry::EndBlock: |
| 2023 | if (SSIDs.empty()) |
| 2024 | return error("Invalid empty synchronization scope names block"); |
| 2025 | return Error::success(); |
| 2026 | case BitstreamEntry::Record: |
| 2027 | // The interesting case. |
| 2028 | break; |
| 2029 | } |
| 2030 | |
| 2031 | // Synchronization scope names are implicitly mapped to synchronization |
| 2032 | // scope IDs by their order. |
| 2033 | |
| 2034 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 2035 | if (!MaybeRecord) |
| 2036 | return MaybeRecord.takeError(); |
| 2037 | if (MaybeRecord.get() != bitc::SYNC_SCOPE_NAME) |
| 2038 | return error("Invalid record"); |
| 2039 | |
| 2040 | SmallString<16> SSN; |
| 2041 | if (convertToString(Record, 0, SSN)) |
| 2042 | return error("Invalid record"); |
| 2043 | |
| 2044 | SSIDs.push_back(Context.getOrInsertSyncScopeID(SSN)); |
| 2045 | Record.clear(); |
| 2046 | } |
| 2047 | } |
| 2048 | |
| 2049 | /// Associate a value with its name from the given index in the provided record. |
| 2050 | Expected<Value *> BitcodeReader::recordValue(SmallVectorImpl<uint64_t> &Record, |
| 2051 | unsigned NameIndex, Triple &TT) { |
| 2052 | SmallString<128> ValueName; |
| 2053 | if (convertToString(Record, NameIndex, ValueName)) |
| 2054 | return error("Invalid record"); |
| 2055 | unsigned ValueID = Record[0]; |
| 2056 | if (ValueID >= ValueList.size() || !ValueList[ValueID]) |
| 2057 | return error("Invalid record"); |
| 2058 | Value *V = ValueList[ValueID]; |
| 2059 | |
| 2060 | StringRef NameStr(ValueName.data(), ValueName.size()); |
| 2061 | if (NameStr.find_first_of(0) != StringRef::npos) |
| 2062 | return error("Invalid value name"); |
| 2063 | V->setName(NameStr); |
| 2064 | auto *GO = dyn_cast<GlobalObject>(V); |
| 2065 | if (GO) { |
| 2066 | if (GO->getComdat() == reinterpret_cast<Comdat *>(1)) { |
| 2067 | if (TT.supportsCOMDAT()) |
| 2068 | GO->setComdat(TheModule->getOrInsertComdat(V->getName())); |
| 2069 | else |
| 2070 | GO->setComdat(nullptr); |
| 2071 | } |
| 2072 | } |
| 2073 | return V; |
| 2074 | } |
| 2075 | |
| 2076 | /// Helper to note and return the current location, and jump to the given |
| 2077 | /// offset. |
| 2078 | static Expected<uint64_t> jumpToValueSymbolTable(uint64_t Offset, |
| 2079 | BitstreamCursor &Stream) { |
| 2080 | // Save the current parsing location so we can jump back at the end |
| 2081 | // of the VST read. |
| 2082 | uint64_t CurrentBit = Stream.GetCurrentBitNo(); |
| 2083 | if (Error JumpFailed = Stream.JumpToBit(Offset * 32)) |
| 2084 | return std::move(JumpFailed); |
| 2085 | Expected<BitstreamEntry> MaybeEntry = Stream.advance(); |
| 2086 | if (!MaybeEntry) |
| 2087 | return MaybeEntry.takeError(); |
| 2088 | assert(MaybeEntry.get().Kind == BitstreamEntry::SubBlock)(static_cast <bool> (MaybeEntry.get().Kind == BitstreamEntry ::SubBlock) ? void (0) : __assert_fail ("MaybeEntry.get().Kind == BitstreamEntry::SubBlock" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2088, __extension__ __PRETTY_FUNCTION__)); |
| 2089 | assert(MaybeEntry.get().ID == bitc::VALUE_SYMTAB_BLOCK_ID)(static_cast <bool> (MaybeEntry.get().ID == bitc::VALUE_SYMTAB_BLOCK_ID ) ? void (0) : __assert_fail ("MaybeEntry.get().ID == bitc::VALUE_SYMTAB_BLOCK_ID" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2089, __extension__ __PRETTY_FUNCTION__)); |
| 2090 | return CurrentBit; |
| 2091 | } |
| 2092 | |
| 2093 | void BitcodeReader::setDeferredFunctionInfo(unsigned FuncBitcodeOffsetDelta, |
| 2094 | Function *F, |
| 2095 | ArrayRef<uint64_t> Record) { |
| 2096 | // Note that we subtract 1 here because the offset is relative to one word |
| 2097 | // before the start of the identification or module block, which was |
| 2098 | // historically always the start of the regular bitcode header. |
| 2099 | uint64_t FuncWordOffset = Record[1] - 1; |
| 2100 | uint64_t FuncBitOffset = FuncWordOffset * 32; |
| 2101 | DeferredFunctionInfo[F] = FuncBitOffset + FuncBitcodeOffsetDelta; |
| 2102 | // Set the LastFunctionBlockBit to point to the last function block. |
| 2103 | // Later when parsing is resumed after function materialization, |
| 2104 | // we can simply skip that last function block. |
| 2105 | if (FuncBitOffset > LastFunctionBlockBit) |
| 2106 | LastFunctionBlockBit = FuncBitOffset; |
| 2107 | } |
| 2108 | |
| 2109 | /// Read a new-style GlobalValue symbol table. |
| 2110 | Error BitcodeReader::parseGlobalValueSymbolTable() { |
| 2111 | unsigned FuncBitcodeOffsetDelta = |
| 2112 | Stream.getAbbrevIDWidth() + bitc::BlockIDWidth; |
| 2113 | |
| 2114 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) |
| 2115 | return Err; |
| 2116 | |
| 2117 | SmallVector<uint64_t, 64> Record; |
| 2118 | while (true) { |
| 2119 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 2120 | if (!MaybeEntry) |
| 2121 | return MaybeEntry.takeError(); |
| 2122 | BitstreamEntry Entry = MaybeEntry.get(); |
| 2123 | |
| 2124 | switch (Entry.Kind) { |
| 2125 | case BitstreamEntry::SubBlock: |
| 2126 | case BitstreamEntry::Error: |
| 2127 | return error("Malformed block"); |
| 2128 | case BitstreamEntry::EndBlock: |
| 2129 | return Error::success(); |
| 2130 | case BitstreamEntry::Record: |
| 2131 | break; |
| 2132 | } |
| 2133 | |
| 2134 | Record.clear(); |
| 2135 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 2136 | if (!MaybeRecord) |
| 2137 | return MaybeRecord.takeError(); |
| 2138 | switch (MaybeRecord.get()) { |
| 2139 | case bitc::VST_CODE_FNENTRY: // [valueid, offset] |
| 2140 | setDeferredFunctionInfo(FuncBitcodeOffsetDelta, |
| 2141 | cast<Function>(ValueList[Record[0]]), Record); |
| 2142 | break; |
| 2143 | } |
| 2144 | } |
| 2145 | } |
| 2146 | |
| 2147 | /// Parse the value symbol table at either the current parsing location or |
| 2148 | /// at the given bit offset if provided. |
| 2149 | Error BitcodeReader::parseValueSymbolTable(uint64_t Offset) { |
| 2150 | uint64_t CurrentBit; |
| 2151 | // Pass in the Offset to distinguish between calling for the module-level |
| 2152 | // VST (where we want to jump to the VST offset) and the function-level |
| 2153 | // VST (where we don't). |
| 2154 | if (Offset > 0) { |
| 2155 | Expected<uint64_t> MaybeCurrentBit = jumpToValueSymbolTable(Offset, Stream); |
| 2156 | if (!MaybeCurrentBit) |
| 2157 | return MaybeCurrentBit.takeError(); |
| 2158 | CurrentBit = MaybeCurrentBit.get(); |
| 2159 | // If this module uses a string table, read this as a module-level VST. |
| 2160 | if (UseStrtab) { |
| 2161 | if (Error Err = parseGlobalValueSymbolTable()) |
| 2162 | return Err; |
| 2163 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) |
| 2164 | return JumpFailed; |
| 2165 | return Error::success(); |
| 2166 | } |
| 2167 | // Otherwise, the VST will be in a similar format to a function-level VST, |
| 2168 | // and will contain symbol names. |
| 2169 | } |
| 2170 | |
| 2171 | // Compute the delta between the bitcode indices in the VST (the word offset |
| 2172 | // to the word-aligned ENTER_SUBBLOCK for the function block, and that |
| 2173 | // expected by the lazy reader. The reader's EnterSubBlock expects to have |
| 2174 | // already read the ENTER_SUBBLOCK code (size getAbbrevIDWidth) and BlockID |
| 2175 | // (size BlockIDWidth). Note that we access the stream's AbbrevID width here |
| 2176 | // just before entering the VST subblock because: 1) the EnterSubBlock |
| 2177 | // changes the AbbrevID width; 2) the VST block is nested within the same |
| 2178 | // outer MODULE_BLOCK as the FUNCTION_BLOCKs and therefore have the same |
| 2179 | // AbbrevID width before calling EnterSubBlock; and 3) when we want to |
| 2180 | // jump to the FUNCTION_BLOCK using this offset later, we don't want |
| 2181 | // to rely on the stream's AbbrevID width being that of the MODULE_BLOCK. |
| 2182 | unsigned FuncBitcodeOffsetDelta = |
| 2183 | Stream.getAbbrevIDWidth() + bitc::BlockIDWidth; |
| 2184 | |
| 2185 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) |
| 2186 | return Err; |
| 2187 | |
| 2188 | SmallVector<uint64_t, 64> Record; |
| 2189 | |
| 2190 | Triple TT(TheModule->getTargetTriple()); |
| 2191 | |
| 2192 | // Read all the records for this value table. |
| 2193 | SmallString<128> ValueName; |
| 2194 | |
| 2195 | while (true) { |
| 2196 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 2197 | if (!MaybeEntry) |
| 2198 | return MaybeEntry.takeError(); |
| 2199 | BitstreamEntry Entry = MaybeEntry.get(); |
| 2200 | |
| 2201 | switch (Entry.Kind) { |
| 2202 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 2203 | case BitstreamEntry::Error: |
| 2204 | return error("Malformed block"); |
| 2205 | case BitstreamEntry::EndBlock: |
| 2206 | if (Offset > 0) |
| 2207 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) |
| 2208 | return JumpFailed; |
| 2209 | return Error::success(); |
| 2210 | case BitstreamEntry::Record: |
| 2211 | // The interesting case. |
| 2212 | break; |
| 2213 | } |
| 2214 | |
| 2215 | // Read a record. |
| 2216 | Record.clear(); |
| 2217 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 2218 | if (!MaybeRecord) |
| 2219 | return MaybeRecord.takeError(); |
| 2220 | switch (MaybeRecord.get()) { |
| 2221 | default: // Default behavior: unknown type. |
| 2222 | break; |
| 2223 | case bitc::VST_CODE_ENTRY: { // VST_CODE_ENTRY: [valueid, namechar x N] |
| 2224 | Expected<Value *> ValOrErr = recordValue(Record, 1, TT); |
| 2225 | if (Error Err = ValOrErr.takeError()) |
| 2226 | return Err; |
| 2227 | ValOrErr.get(); |
| 2228 | break; |
| 2229 | } |
| 2230 | case bitc::VST_CODE_FNENTRY: { |
| 2231 | // VST_CODE_FNENTRY: [valueid, offset, namechar x N] |
| 2232 | Expected<Value *> ValOrErr = recordValue(Record, 2, TT); |
| 2233 | if (Error Err = ValOrErr.takeError()) |
| 2234 | return Err; |
| 2235 | Value *V = ValOrErr.get(); |
| 2236 | |
| 2237 | // Ignore function offsets emitted for aliases of functions in older |
| 2238 | // versions of LLVM. |
| 2239 | if (auto *F = dyn_cast<Function>(V)) |
| 2240 | setDeferredFunctionInfo(FuncBitcodeOffsetDelta, F, Record); |
| 2241 | break; |
| 2242 | } |
| 2243 | case bitc::VST_CODE_BBENTRY: { |
| 2244 | if (convertToString(Record, 1, ValueName)) |
| 2245 | return error("Invalid record"); |
| 2246 | BasicBlock *BB = getBasicBlock(Record[0]); |
| 2247 | if (!BB) |
| 2248 | return error("Invalid record"); |
| 2249 | |
| 2250 | BB->setName(StringRef(ValueName.data(), ValueName.size())); |
| 2251 | ValueName.clear(); |
| 2252 | break; |
| 2253 | } |
| 2254 | } |
| 2255 | } |
| 2256 | } |
| 2257 | |
| 2258 | /// Decode a signed value stored with the sign bit in the LSB for dense VBR |
| 2259 | /// encoding. |
| 2260 | uint64_t BitcodeReader::decodeSignRotatedValue(uint64_t V) { |
| 2261 | if ((V & 1) == 0) |
| 2262 | return V >> 1; |
| 2263 | if (V != 1) |
| 2264 | return -(V >> 1); |
| 2265 | // There is no such thing as -0 with integers. "-0" really means MININT. |
| 2266 | return 1ULL << 63; |
| 2267 | } |
| 2268 | |
| 2269 | /// Resolve all of the initializers for global values and aliases that we can. |
| 2270 | Error BitcodeReader::resolveGlobalAndIndirectSymbolInits() { |
| 2271 | std::vector<std::pair<GlobalVariable *, unsigned>> GlobalInitWorklist; |
| 2272 | std::vector<std::pair<GlobalIndirectSymbol *, unsigned>> |
| 2273 | IndirectSymbolInitWorklist; |
| 2274 | std::vector<std::pair<Function *, unsigned>> FunctionPrefixWorklist; |
| 2275 | std::vector<std::pair<Function *, unsigned>> FunctionPrologueWorklist; |
| 2276 | std::vector<std::pair<Function *, unsigned>> FunctionPersonalityFnWorklist; |
| 2277 | |
| 2278 | GlobalInitWorklist.swap(GlobalInits); |
| 2279 | IndirectSymbolInitWorklist.swap(IndirectSymbolInits); |
| 2280 | FunctionPrefixWorklist.swap(FunctionPrefixes); |
| 2281 | FunctionPrologueWorklist.swap(FunctionPrologues); |
| 2282 | FunctionPersonalityFnWorklist.swap(FunctionPersonalityFns); |
| 2283 | |
| 2284 | while (!GlobalInitWorklist.empty()) { |
| 2285 | unsigned ValID = GlobalInitWorklist.back().second; |
| 2286 | if (ValID >= ValueList.size()) { |
| 2287 | // Not ready to resolve this yet, it requires something later in the file. |
| 2288 | GlobalInits.push_back(GlobalInitWorklist.back()); |
| 2289 | } else { |
| 2290 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) |
| 2291 | GlobalInitWorklist.back().first->setInitializer(C); |
| 2292 | else |
| 2293 | return error("Expected a constant"); |
| 2294 | } |
| 2295 | GlobalInitWorklist.pop_back(); |
| 2296 | } |
| 2297 | |
| 2298 | while (!IndirectSymbolInitWorklist.empty()) { |
| 2299 | unsigned ValID = IndirectSymbolInitWorklist.back().second; |
| 2300 | if (ValID >= ValueList.size()) { |
| 2301 | IndirectSymbolInits.push_back(IndirectSymbolInitWorklist.back()); |
| 2302 | } else { |
| 2303 | Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID]); |
| 2304 | if (!C) |
| 2305 | return error("Expected a constant"); |
| 2306 | GlobalIndirectSymbol *GIS = IndirectSymbolInitWorklist.back().first; |
| 2307 | if (isa<GlobalAlias>(GIS) && C->getType() != GIS->getType()) |
| 2308 | return error("Alias and aliasee types don't match"); |
| 2309 | GIS->setIndirectSymbol(C); |
| 2310 | } |
| 2311 | IndirectSymbolInitWorklist.pop_back(); |
| 2312 | } |
| 2313 | |
| 2314 | while (!FunctionPrefixWorklist.empty()) { |
| 2315 | unsigned ValID = FunctionPrefixWorklist.back().second; |
| 2316 | if (ValID >= ValueList.size()) { |
| 2317 | FunctionPrefixes.push_back(FunctionPrefixWorklist.back()); |
| 2318 | } else { |
| 2319 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) |
| 2320 | FunctionPrefixWorklist.back().first->setPrefixData(C); |
| 2321 | else |
| 2322 | return error("Expected a constant"); |
| 2323 | } |
| 2324 | FunctionPrefixWorklist.pop_back(); |
| 2325 | } |
| 2326 | |
| 2327 | while (!FunctionPrologueWorklist.empty()) { |
| 2328 | unsigned ValID = FunctionPrologueWorklist.back().second; |
| 2329 | if (ValID >= ValueList.size()) { |
| 2330 | FunctionPrologues.push_back(FunctionPrologueWorklist.back()); |
| 2331 | } else { |
| 2332 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) |
| 2333 | FunctionPrologueWorklist.back().first->setPrologueData(C); |
| 2334 | else |
| 2335 | return error("Expected a constant"); |
| 2336 | } |
| 2337 | FunctionPrologueWorklist.pop_back(); |
| 2338 | } |
| 2339 | |
| 2340 | while (!FunctionPersonalityFnWorklist.empty()) { |
| 2341 | unsigned ValID = FunctionPersonalityFnWorklist.back().second; |
| 2342 | if (ValID >= ValueList.size()) { |
| 2343 | FunctionPersonalityFns.push_back(FunctionPersonalityFnWorklist.back()); |
| 2344 | } else { |
| 2345 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) |
| 2346 | FunctionPersonalityFnWorklist.back().first->setPersonalityFn(C); |
| 2347 | else |
| 2348 | return error("Expected a constant"); |
| 2349 | } |
| 2350 | FunctionPersonalityFnWorklist.pop_back(); |
| 2351 | } |
| 2352 | |
| 2353 | return Error::success(); |
| 2354 | } |
| 2355 | |
| 2356 | APInt llvm::readWideAPInt(ArrayRef<uint64_t> Vals, unsigned TypeBits) { |
| 2357 | SmallVector<uint64_t, 8> Words(Vals.size()); |
| 2358 | transform(Vals, Words.begin(), |
| 2359 | BitcodeReader::decodeSignRotatedValue); |
| 2360 | |
| 2361 | return APInt(TypeBits, Words); |
| 2362 | } |
| 2363 | |
| 2364 | Error BitcodeReader::parseConstants() { |
| 2365 | if (Error Err = Stream.EnterSubBlock(bitc::CONSTANTS_BLOCK_ID)) |
| 2366 | return Err; |
| 2367 | |
| 2368 | SmallVector<uint64_t, 64> Record; |
| 2369 | |
| 2370 | // Read all the records for this value table. |
| 2371 | Type *CurTy = Type::getInt32Ty(Context); |
| 2372 | Type *CurFullTy = Type::getInt32Ty(Context); |
| 2373 | unsigned NextCstNo = ValueList.size(); |
| 2374 | |
| 2375 | struct DelayedShufTy { |
| 2376 | VectorType *OpTy; |
| 2377 | VectorType *RTy; |
| 2378 | Type *CurFullTy; |
| 2379 | uint64_t Op0Idx; |
| 2380 | uint64_t Op1Idx; |
| 2381 | uint64_t Op2Idx; |
| 2382 | unsigned CstNo; |
| 2383 | }; |
| 2384 | std::vector<DelayedShufTy> DelayedShuffles; |
| 2385 | while (true) { |
| 2386 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 2387 | if (!MaybeEntry) |
| 2388 | return MaybeEntry.takeError(); |
| 2389 | BitstreamEntry Entry = MaybeEntry.get(); |
| 2390 | |
| 2391 | switch (Entry.Kind) { |
| 2392 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 2393 | case BitstreamEntry::Error: |
| 2394 | return error("Malformed block"); |
| 2395 | case BitstreamEntry::EndBlock: |
| 2396 | // Once all the constants have been read, go through and resolve forward |
| 2397 | // references. |
| 2398 | // |
| 2399 | // We have to treat shuffles specially because they don't have three |
| 2400 | // operands anymore. We need to convert the shuffle mask into an array, |
| 2401 | // and we can't convert a forward reference. |
| 2402 | for (auto &DelayedShuffle : DelayedShuffles) { |
| 2403 | VectorType *OpTy = DelayedShuffle.OpTy; |
| 2404 | VectorType *RTy = DelayedShuffle.RTy; |
| 2405 | uint64_t Op0Idx = DelayedShuffle.Op0Idx; |
| 2406 | uint64_t Op1Idx = DelayedShuffle.Op1Idx; |
| 2407 | uint64_t Op2Idx = DelayedShuffle.Op2Idx; |
| 2408 | uint64_t CstNo = DelayedShuffle.CstNo; |
| 2409 | Constant *Op0 = ValueList.getConstantFwdRef(Op0Idx, OpTy); |
| 2410 | Constant *Op1 = ValueList.getConstantFwdRef(Op1Idx, OpTy); |
| 2411 | Type *ShufTy = |
| 2412 | VectorType::get(Type::getInt32Ty(Context), RTy->getElementCount()); |
| 2413 | Constant *Op2 = ValueList.getConstantFwdRef(Op2Idx, ShufTy); |
| 2414 | if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2)) |
| 2415 | return error("Invalid shufflevector operands"); |
| 2416 | SmallVector<int, 16> Mask; |
| 2417 | ShuffleVectorInst::getShuffleMask(Op2, Mask); |
| 2418 | Value *V = ConstantExpr::getShuffleVector(Op0, Op1, Mask); |
| 2419 | ValueList.assignValue(V, CstNo, DelayedShuffle.CurFullTy); |
| 2420 | } |
| 2421 | |
| 2422 | if (NextCstNo != ValueList.size()) |
| 2423 | return error("Invalid constant reference"); |
| 2424 | |
| 2425 | ValueList.resolveConstantForwardRefs(); |
| 2426 | return Error::success(); |
| 2427 | case BitstreamEntry::Record: |
| 2428 | // The interesting case. |
| 2429 | break; |
| 2430 | } |
| 2431 | |
| 2432 | // Read a record. |
| 2433 | Record.clear(); |
| 2434 | Type *VoidType = Type::getVoidTy(Context); |
| 2435 | Value *V = nullptr; |
| 2436 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); |
| 2437 | if (!MaybeBitCode) |
| 2438 | return MaybeBitCode.takeError(); |
| 2439 | switch (unsigned BitCode = MaybeBitCode.get()) { |
| 2440 | default: // Default behavior: unknown constant |
| 2441 | case bitc::CST_CODE_UNDEF: // UNDEF |
| 2442 | V = UndefValue::get(CurTy); |
| 2443 | break; |
| 2444 | case bitc::CST_CODE_POISON: // POISON |
| 2445 | V = PoisonValue::get(CurTy); |
| 2446 | break; |
| 2447 | case bitc::CST_CODE_SETTYPE: // SETTYPE: [typeid] |
| 2448 | if (Record.empty()) |
| 2449 | return error("Invalid record"); |
| 2450 | if (Record[0] >= TypeList.size() || !TypeList[Record[0]]) |
| 2451 | return error("Invalid record"); |
| 2452 | if (TypeList[Record[0]] == VoidType) |
| 2453 | return error("Invalid constant type"); |
| 2454 | CurFullTy = TypeList[Record[0]]; |
| 2455 | CurTy = flattenPointerTypes(CurFullTy); |
| 2456 | continue; // Skip the ValueList manipulation. |
| 2457 | case bitc::CST_CODE_NULL: // NULL |
| 2458 | if (CurTy->isVoidTy() || CurTy->isFunctionTy() || CurTy->isLabelTy()) |
| 2459 | return error("Invalid type for a constant null value"); |
| 2460 | V = Constant::getNullValue(CurTy); |
| 2461 | break; |
| 2462 | case bitc::CST_CODE_INTEGER: // INTEGER: [intval] |
| 2463 | if (!CurTy->isIntegerTy() || Record.empty()) |
| 2464 | return error("Invalid record"); |
| 2465 | V = ConstantInt::get(CurTy, decodeSignRotatedValue(Record[0])); |
| 2466 | break; |
| 2467 | case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n x intval] |
| 2468 | if (!CurTy->isIntegerTy() || Record.empty()) |
| 2469 | return error("Invalid record"); |
| 2470 | |
| 2471 | APInt VInt = |
| 2472 | readWideAPInt(Record, cast<IntegerType>(CurTy)->getBitWidth()); |
| 2473 | V = ConstantInt::get(Context, VInt); |
| 2474 | |
| 2475 | break; |
| 2476 | } |
| 2477 | case bitc::CST_CODE_FLOAT: { // FLOAT: [fpval] |
| 2478 | if (Record.empty()) |
| 2479 | return error("Invalid record"); |
| 2480 | if (CurTy->isHalfTy()) |
| 2481 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEhalf(), |
| 2482 | APInt(16, (uint16_t)Record[0]))); |
| 2483 | else if (CurTy->isBFloatTy()) |
| 2484 | V = ConstantFP::get(Context, APFloat(APFloat::BFloat(), |
| 2485 | APInt(16, (uint32_t)Record[0]))); |
| 2486 | else if (CurTy->isFloatTy()) |
| 2487 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEsingle(), |
| 2488 | APInt(32, (uint32_t)Record[0]))); |
| 2489 | else if (CurTy->isDoubleTy()) |
| 2490 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEdouble(), |
| 2491 | APInt(64, Record[0]))); |
| 2492 | else if (CurTy->isX86_FP80Ty()) { |
| 2493 | // Bits are not stored the same way as a normal i80 APInt, compensate. |
| 2494 | uint64_t Rearrange[2]; |
| 2495 | Rearrange[0] = (Record[1] & 0xffffLL) | (Record[0] << 16); |
| 2496 | Rearrange[1] = Record[0] >> 48; |
| 2497 | V = ConstantFP::get(Context, APFloat(APFloat::x87DoubleExtended(), |
| 2498 | APInt(80, Rearrange))); |
| 2499 | } else if (CurTy->isFP128Ty()) |
| 2500 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEquad(), |
| 2501 | APInt(128, Record))); |
| 2502 | else if (CurTy->isPPC_FP128Ty()) |
| 2503 | V = ConstantFP::get(Context, APFloat(APFloat::PPCDoubleDouble(), |
| 2504 | APInt(128, Record))); |
| 2505 | else |
| 2506 | V = UndefValue::get(CurTy); |
| 2507 | break; |
| 2508 | } |
| 2509 | |
| 2510 | case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n x value number] |
| 2511 | if (Record.empty()) |
| 2512 | return error("Invalid record"); |
| 2513 | |
| 2514 | unsigned Size = Record.size(); |
| 2515 | SmallVector<Constant*, 16> Elts; |
| 2516 | |
| 2517 | if (StructType *STy = dyn_cast<StructType>(CurTy)) { |
| 2518 | for (unsigned i = 0; i != Size; ++i) |
| 2519 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], |
| 2520 | STy->getElementType(i))); |
| 2521 | V = ConstantStruct::get(STy, Elts); |
| 2522 | } else if (ArrayType *ATy = dyn_cast<ArrayType>(CurTy)) { |
| 2523 | Type *EltTy = ATy->getElementType(); |
| 2524 | for (unsigned i = 0; i != Size; ++i) |
| 2525 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy)); |
| 2526 | V = ConstantArray::get(ATy, Elts); |
| 2527 | } else if (VectorType *VTy = dyn_cast<VectorType>(CurTy)) { |
| 2528 | Type *EltTy = VTy->getElementType(); |
| 2529 | for (unsigned i = 0; i != Size; ++i) |
| 2530 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy)); |
| 2531 | V = ConstantVector::get(Elts); |
| 2532 | } else { |
| 2533 | V = UndefValue::get(CurTy); |
| 2534 | } |
| 2535 | break; |
| 2536 | } |
| 2537 | case bitc::CST_CODE_STRING: // STRING: [values] |
| 2538 | case bitc::CST_CODE_CSTRING: { // CSTRING: [values] |
| 2539 | if (Record.empty()) |
| 2540 | return error("Invalid record"); |
| 2541 | |
| 2542 | SmallString<16> Elts(Record.begin(), Record.end()); |
| 2543 | V = ConstantDataArray::getString(Context, Elts, |
| 2544 | BitCode == bitc::CST_CODE_CSTRING); |
| 2545 | break; |
| 2546 | } |
| 2547 | case bitc::CST_CODE_DATA: {// DATA: [n x value] |
| 2548 | if (Record.empty()) |
| 2549 | return error("Invalid record"); |
| 2550 | |
| 2551 | Type *EltTy; |
| 2552 | if (auto *Array = dyn_cast<ArrayType>(CurTy)) |
| 2553 | EltTy = Array->getElementType(); |
| 2554 | else |
| 2555 | EltTy = cast<VectorType>(CurTy)->getElementType(); |
| 2556 | if (EltTy->isIntegerTy(8)) { |
| 2557 | SmallVector<uint8_t, 16> Elts(Record.begin(), Record.end()); |
| 2558 | if (isa<VectorType>(CurTy)) |
| 2559 | V = ConstantDataVector::get(Context, Elts); |
| 2560 | else |
| 2561 | V = ConstantDataArray::get(Context, Elts); |
| 2562 | } else if (EltTy->isIntegerTy(16)) { |
| 2563 | SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end()); |
| 2564 | if (isa<VectorType>(CurTy)) |
| 2565 | V = ConstantDataVector::get(Context, Elts); |
| 2566 | else |
| 2567 | V = ConstantDataArray::get(Context, Elts); |
| 2568 | } else if (EltTy->isIntegerTy(32)) { |
| 2569 | SmallVector<uint32_t, 16> Elts(Record.begin(), Record.end()); |
| 2570 | if (isa<VectorType>(CurTy)) |
| 2571 | V = ConstantDataVector::get(Context, Elts); |
| 2572 | else |
| 2573 | V = ConstantDataArray::get(Context, Elts); |
| 2574 | } else if (EltTy->isIntegerTy(64)) { |
| 2575 | SmallVector<uint64_t, 16> Elts(Record.begin(), Record.end()); |
| 2576 | if (isa<VectorType>(CurTy)) |
| 2577 | V = ConstantDataVector::get(Context, Elts); |
| 2578 | else |
| 2579 | V = ConstantDataArray::get(Context, Elts); |
| 2580 | } else if (EltTy->isHalfTy()) { |
| 2581 | SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end()); |
| 2582 | if (isa<VectorType>(CurTy)) |
| 2583 | V = ConstantDataVector::getFP(EltTy, Elts); |
| 2584 | else |
| 2585 | V = ConstantDataArray::getFP(EltTy, Elts); |
| 2586 | } else if (EltTy->isBFloatTy()) { |
| 2587 | SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end()); |
| 2588 | if (isa<VectorType>(CurTy)) |
| 2589 | V = ConstantDataVector::getFP(EltTy, Elts); |
| 2590 | else |
| 2591 | V = ConstantDataArray::getFP(EltTy, Elts); |
| 2592 | } else if (EltTy->isFloatTy()) { |
| 2593 | SmallVector<uint32_t, 16> Elts(Record.begin(), Record.end()); |
| 2594 | if (isa<VectorType>(CurTy)) |
| 2595 | V = ConstantDataVector::getFP(EltTy, Elts); |
| 2596 | else |
| 2597 | V = ConstantDataArray::getFP(EltTy, Elts); |
| 2598 | } else if (EltTy->isDoubleTy()) { |
| 2599 | SmallVector<uint64_t, 16> Elts(Record.begin(), Record.end()); |
| 2600 | if (isa<VectorType>(CurTy)) |
| 2601 | V = ConstantDataVector::getFP(EltTy, Elts); |
| 2602 | else |
| 2603 | V = ConstantDataArray::getFP(EltTy, Elts); |
| 2604 | } else { |
| 2605 | return error("Invalid type for value"); |
| 2606 | } |
| 2607 | break; |
| 2608 | } |
| 2609 | case bitc::CST_CODE_CE_UNOP: { // CE_UNOP: [opcode, opval] |
| 2610 | if (Record.size() < 2) |
| 2611 | return error("Invalid record"); |
| 2612 | int Opc = getDecodedUnaryOpcode(Record[0], CurTy); |
| 2613 | if (Opc < 0) { |
| 2614 | V = UndefValue::get(CurTy); // Unknown unop. |
| 2615 | } else { |
| 2616 | Constant *LHS = ValueList.getConstantFwdRef(Record[1], CurTy); |
| 2617 | unsigned Flags = 0; |
| 2618 | V = ConstantExpr::get(Opc, LHS, Flags); |
| 2619 | } |
| 2620 | break; |
| 2621 | } |
| 2622 | case bitc::CST_CODE_CE_BINOP: { // CE_BINOP: [opcode, opval, opval] |
| 2623 | if (Record.size() < 3) |
| 2624 | return error("Invalid record"); |
| 2625 | int Opc = getDecodedBinaryOpcode(Record[0], CurTy); |
| 2626 | if (Opc < 0) { |
| 2627 | V = UndefValue::get(CurTy); // Unknown binop. |
| 2628 | } else { |
| 2629 | Constant *LHS = ValueList.getConstantFwdRef(Record[1], CurTy); |
| 2630 | Constant *RHS = ValueList.getConstantFwdRef(Record[2], CurTy); |
| 2631 | unsigned Flags = 0; |
| 2632 | if (Record.size() >= 4) { |
| 2633 | if (Opc == Instruction::Add || |
| 2634 | Opc == Instruction::Sub || |
| 2635 | Opc == Instruction::Mul || |
| 2636 | Opc == Instruction::Shl) { |
| 2637 | if (Record[3] & (1 << bitc::OBO_NO_SIGNED_WRAP)) |
| 2638 | Flags |= OverflowingBinaryOperator::NoSignedWrap; |
| 2639 | if (Record[3] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) |
| 2640 | Flags |= OverflowingBinaryOperator::NoUnsignedWrap; |
| 2641 | } else if (Opc == Instruction::SDiv || |
| 2642 | Opc == Instruction::UDiv || |
| 2643 | Opc == Instruction::LShr || |
| 2644 | Opc == Instruction::AShr) { |
| 2645 | if (Record[3] & (1 << bitc::PEO_EXACT)) |
| 2646 | Flags |= SDivOperator::IsExact; |
| 2647 | } |
| 2648 | } |
| 2649 | V = ConstantExpr::get(Opc, LHS, RHS, Flags); |
| 2650 | } |
| 2651 | break; |
| 2652 | } |
| 2653 | case bitc::CST_CODE_CE_CAST: { // CE_CAST: [opcode, opty, opval] |
| 2654 | if (Record.size() < 3) |
| 2655 | return error("Invalid record"); |
| 2656 | int Opc = getDecodedCastOpcode(Record[0]); |
| 2657 | if (Opc < 0) { |
| 2658 | V = UndefValue::get(CurTy); // Unknown cast. |
| 2659 | } else { |
| 2660 | Type *OpTy = getTypeByID(Record[1]); |
| 2661 | if (!OpTy) |
| 2662 | return error("Invalid record"); |
| 2663 | Constant *Op = ValueList.getConstantFwdRef(Record[2], OpTy); |
| 2664 | V = UpgradeBitCastExpr(Opc, Op, CurTy); |
| 2665 | if (!V) V = ConstantExpr::getCast(Opc, Op, CurTy); |
| 2666 | } |
| 2667 | break; |
| 2668 | } |
| 2669 | case bitc::CST_CODE_CE_INBOUNDS_GEP: // [ty, n x operands] |
| 2670 | case bitc::CST_CODE_CE_GEP: // [ty, n x operands] |
| 2671 | case bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX: { // [ty, flags, n x |
| 2672 | // operands] |
| 2673 | unsigned OpNum = 0; |
| 2674 | Type *PointeeType = nullptr; |
| 2675 | if (BitCode == bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX || |
| 2676 | Record.size() % 2) |
| 2677 | PointeeType = getTypeByID(Record[OpNum++]); |
| 2678 | |
| 2679 | bool InBounds = false; |
| 2680 | Optional<unsigned> InRangeIndex; |
| 2681 | if (BitCode == bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX) { |
| 2682 | uint64_t Op = Record[OpNum++]; |
| 2683 | InBounds = Op & 1; |
| 2684 | InRangeIndex = Op >> 1; |
| 2685 | } else if (BitCode == bitc::CST_CODE_CE_INBOUNDS_GEP) |
| 2686 | InBounds = true; |
| 2687 | |
| 2688 | SmallVector<Constant*, 16> Elts; |
| 2689 | Type *Elt0FullTy = nullptr; |
| 2690 | while (OpNum != Record.size()) { |
| 2691 | if (!Elt0FullTy) |
| 2692 | Elt0FullTy = getFullyStructuredTypeByID(Record[OpNum]); |
| 2693 | Type *ElTy = getTypeByID(Record[OpNum++]); |
| 2694 | if (!ElTy) |
| 2695 | return error("Invalid record"); |
| 2696 | Elts.push_back(ValueList.getConstantFwdRef(Record[OpNum++], ElTy)); |
| 2697 | } |
| 2698 | |
| 2699 | if (Elts.size() < 1) |
| 2700 | return error("Invalid gep with no operands"); |
| 2701 | |
| 2702 | Type *ImplicitPointeeType = |
| 2703 | getPointerElementFlatType(Elt0FullTy->getScalarType()); |
| 2704 | if (!PointeeType) |
| 2705 | PointeeType = ImplicitPointeeType; |
| 2706 | else if (PointeeType != ImplicitPointeeType) |
| 2707 | return error("Explicit gep operator type does not match pointee type " |
| 2708 | "of pointer operand"); |
| 2709 | |
| 2710 | ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end()); |
| 2711 | V = ConstantExpr::getGetElementPtr(PointeeType, Elts[0], Indices, |
| 2712 | InBounds, InRangeIndex); |
| 2713 | break; |
| 2714 | } |
| 2715 | case bitc::CST_CODE_CE_SELECT: { // CE_SELECT: [opval#, opval#, opval#] |
| 2716 | if (Record.size() < 3) |
| 2717 | return error("Invalid record"); |
| 2718 | |
| 2719 | Type *SelectorTy = Type::getInt1Ty(Context); |
| 2720 | |
| 2721 | // The selector might be an i1, an <n x i1>, or a <vscale x n x i1> |
| 2722 | // Get the type from the ValueList before getting a forward ref. |
| 2723 | if (VectorType *VTy = dyn_cast<VectorType>(CurTy)) |
| 2724 | if (Value *V = ValueList[Record[0]]) |
| 2725 | if (SelectorTy != V->getType()) |
| 2726 | SelectorTy = VectorType::get(SelectorTy, |
| 2727 | VTy->getElementCount()); |
| 2728 | |
| 2729 | V = ConstantExpr::getSelect(ValueList.getConstantFwdRef(Record[0], |
| 2730 | SelectorTy), |
| 2731 | ValueList.getConstantFwdRef(Record[1],CurTy), |
| 2732 | ValueList.getConstantFwdRef(Record[2],CurTy)); |
| 2733 | break; |
| 2734 | } |
| 2735 | case bitc::CST_CODE_CE_EXTRACTELT |
| 2736 | : { // CE_EXTRACTELT: [opty, opval, opty, opval] |
| 2737 | if (Record.size() < 3) |
| 2738 | return error("Invalid record"); |
| 2739 | VectorType *OpTy = |
| 2740 | dyn_cast_or_null<VectorType>(getTypeByID(Record[0])); |
| 2741 | if (!OpTy) |
| 2742 | return error("Invalid record"); |
| 2743 | Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); |
| 2744 | Constant *Op1 = nullptr; |
| 2745 | if (Record.size() == 4) { |
| 2746 | Type *IdxTy = getTypeByID(Record[2]); |
| 2747 | if (!IdxTy) |
| 2748 | return error("Invalid record"); |
| 2749 | Op1 = ValueList.getConstantFwdRef(Record[3], IdxTy); |
| 2750 | } else { |
| 2751 | // Deprecated, but still needed to read old bitcode files. |
| 2752 | Op1 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context)); |
| 2753 | } |
| 2754 | if (!Op1) |
| 2755 | return error("Invalid record"); |
| 2756 | V = ConstantExpr::getExtractElement(Op0, Op1); |
| 2757 | break; |
| 2758 | } |
| 2759 | case bitc::CST_CODE_CE_INSERTELT |
| 2760 | : { // CE_INSERTELT: [opval, opval, opty, opval] |
| 2761 | VectorType *OpTy = dyn_cast<VectorType>(CurTy); |
| 2762 | if (Record.size() < 3 || !OpTy) |
| 2763 | return error("Invalid record"); |
| 2764 | Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy); |
| 2765 | Constant *Op1 = ValueList.getConstantFwdRef(Record[1], |
| 2766 | OpTy->getElementType()); |
| 2767 | Constant *Op2 = nullptr; |
| 2768 | if (Record.size() == 4) { |
| 2769 | Type *IdxTy = getTypeByID(Record[2]); |
| 2770 | if (!IdxTy) |
| 2771 | return error("Invalid record"); |
| 2772 | Op2 = ValueList.getConstantFwdRef(Record[3], IdxTy); |
| 2773 | } else { |
| 2774 | // Deprecated, but still needed to read old bitcode files. |
| 2775 | Op2 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context)); |
| 2776 | } |
| 2777 | if (!Op2) |
| 2778 | return error("Invalid record"); |
| 2779 | V = ConstantExpr::getInsertElement(Op0, Op1, Op2); |
| 2780 | break; |
| 2781 | } |
| 2782 | case bitc::CST_CODE_CE_SHUFFLEVEC: { // CE_SHUFFLEVEC: [opval, opval, opval] |
| 2783 | VectorType *OpTy = dyn_cast<VectorType>(CurTy); |
| 2784 | if (Record.size() < 3 || !OpTy) |
| 2785 | return error("Invalid record"); |
| 2786 | DelayedShuffles.push_back( |
| 2787 | {OpTy, OpTy, CurFullTy, Record[0], Record[1], Record[2], NextCstNo}); |
| 2788 | ++NextCstNo; |
| 2789 | continue; |
| 2790 | } |
| 2791 | case bitc::CST_CODE_CE_SHUFVEC_EX: { // [opty, opval, opval, opval] |
| 2792 | VectorType *RTy = dyn_cast<VectorType>(CurTy); |
| 2793 | VectorType *OpTy = |
| 2794 | dyn_cast_or_null<VectorType>(getTypeByID(Record[0])); |
| 2795 | if (Record.size() < 4 || !RTy || !OpTy) |
| 2796 | return error("Invalid record"); |
| 2797 | DelayedShuffles.push_back( |
| 2798 | {OpTy, RTy, CurFullTy, Record[1], Record[2], Record[3], NextCstNo}); |
| 2799 | ++NextCstNo; |
| 2800 | continue; |
| 2801 | } |
| 2802 | case bitc::CST_CODE_CE_CMP: { // CE_CMP: [opty, opval, opval, pred] |
| 2803 | if (Record.size() < 4) |
| 2804 | return error("Invalid record"); |
| 2805 | Type *OpTy = getTypeByID(Record[0]); |
| 2806 | if (!OpTy) |
| 2807 | return error("Invalid record"); |
| 2808 | Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); |
| 2809 | Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy); |
| 2810 | |
| 2811 | if (OpTy->isFPOrFPVectorTy()) |
| 2812 | V = ConstantExpr::getFCmp(Record[3], Op0, Op1); |
| 2813 | else |
| 2814 | V = ConstantExpr::getICmp(Record[3], Op0, Op1); |
| 2815 | break; |
| 2816 | } |
| 2817 | // This maintains backward compatibility, pre-asm dialect keywords. |
| 2818 | // Deprecated, but still needed to read old bitcode files. |
| 2819 | case bitc::CST_CODE_INLINEASM_OLD: { |
| 2820 | if (Record.size() < 2) |
| 2821 | return error("Invalid record"); |
| 2822 | std::string AsmStr, ConstrStr; |
| 2823 | bool HasSideEffects = Record[0] & 1; |
| 2824 | bool IsAlignStack = Record[0] >> 1; |
| 2825 | unsigned AsmStrSize = Record[1]; |
| 2826 | if (2+AsmStrSize >= Record.size()) |
| 2827 | return error("Invalid record"); |
| 2828 | unsigned ConstStrSize = Record[2+AsmStrSize]; |
| 2829 | if (3+AsmStrSize+ConstStrSize > Record.size()) |
| 2830 | return error("Invalid record"); |
| 2831 | |
| 2832 | for (unsigned i = 0; i != AsmStrSize; ++i) |
| 2833 | AsmStr += (char)Record[2+i]; |
| 2834 | for (unsigned i = 0; i != ConstStrSize; ++i) |
| 2835 | ConstrStr += (char)Record[3+AsmStrSize+i]; |
| 2836 | UpgradeInlineAsmString(&AsmStr); |
| 2837 | V = InlineAsm::get( |
| 2838 | cast<FunctionType>(getPointerElementFlatType(CurFullTy)), AsmStr, |
| 2839 | ConstrStr, HasSideEffects, IsAlignStack); |
| 2840 | break; |
| 2841 | } |
| 2842 | // This version adds support for the asm dialect keywords (e.g., |
| 2843 | // inteldialect). |
| 2844 | case bitc::CST_CODE_INLINEASM_OLD2: { |
| 2845 | if (Record.size() < 2) |
| 2846 | return error("Invalid record"); |
| 2847 | std::string AsmStr, ConstrStr; |
| 2848 | bool HasSideEffects = Record[0] & 1; |
| 2849 | bool IsAlignStack = (Record[0] >> 1) & 1; |
| 2850 | unsigned AsmDialect = Record[0] >> 2; |
| 2851 | unsigned AsmStrSize = Record[1]; |
| 2852 | if (2+AsmStrSize >= Record.size()) |
| 2853 | return error("Invalid record"); |
| 2854 | unsigned ConstStrSize = Record[2+AsmStrSize]; |
| 2855 | if (3+AsmStrSize+ConstStrSize > Record.size()) |
| 2856 | return error("Invalid record"); |
| 2857 | |
| 2858 | for (unsigned i = 0; i != AsmStrSize; ++i) |
| 2859 | AsmStr += (char)Record[2+i]; |
| 2860 | for (unsigned i = 0; i != ConstStrSize; ++i) |
| 2861 | ConstrStr += (char)Record[3+AsmStrSize+i]; |
| 2862 | UpgradeInlineAsmString(&AsmStr); |
| 2863 | V = InlineAsm::get( |
| 2864 | cast<FunctionType>(getPointerElementFlatType(CurFullTy)), AsmStr, |
| 2865 | ConstrStr, HasSideEffects, IsAlignStack, |
| 2866 | InlineAsm::AsmDialect(AsmDialect)); |
| 2867 | break; |
| 2868 | } |
| 2869 | // This version adds support for the unwind keyword. |
| 2870 | case bitc::CST_CODE_INLINEASM: { |
| 2871 | if (Record.size() < 2) |
| 2872 | return error("Invalid record"); |
| 2873 | std::string AsmStr, ConstrStr; |
| 2874 | bool HasSideEffects = Record[0] & 1; |
| 2875 | bool IsAlignStack = (Record[0] >> 1) & 1; |
| 2876 | unsigned AsmDialect = (Record[0] >> 2) & 1; |
| 2877 | bool CanThrow = (Record[0] >> 3) & 1; |
| 2878 | unsigned AsmStrSize = Record[1]; |
| 2879 | if (2 + AsmStrSize >= Record.size()) |
| 2880 | return error("Invalid record"); |
| 2881 | unsigned ConstStrSize = Record[2 + AsmStrSize]; |
| 2882 | if (3 + AsmStrSize + ConstStrSize > Record.size()) |
| 2883 | return error("Invalid record"); |
| 2884 | |
| 2885 | for (unsigned i = 0; i != AsmStrSize; ++i) |
| 2886 | AsmStr += (char)Record[2 + i]; |
| 2887 | for (unsigned i = 0; i != ConstStrSize; ++i) |
| 2888 | ConstrStr += (char)Record[3 + AsmStrSize + i]; |
| 2889 | UpgradeInlineAsmString(&AsmStr); |
| 2890 | V = InlineAsm::get( |
| 2891 | cast<FunctionType>(getPointerElementFlatType(CurFullTy)), AsmStr, |
| 2892 | ConstrStr, HasSideEffects, IsAlignStack, |
| 2893 | InlineAsm::AsmDialect(AsmDialect), CanThrow); |
| 2894 | break; |
| 2895 | } |
| 2896 | case bitc::CST_CODE_BLOCKADDRESS:{ |
| 2897 | if (Record.size() < 3) |
| 2898 | return error("Invalid record"); |
| 2899 | Type *FnTy = getTypeByID(Record[0]); |
| 2900 | if (!FnTy) |
| 2901 | return error("Invalid record"); |
| 2902 | Function *Fn = |
| 2903 | dyn_cast_or_null<Function>(ValueList.getConstantFwdRef(Record[1],FnTy)); |
| 2904 | if (!Fn) |
| 2905 | return error("Invalid record"); |
| 2906 | |
| 2907 | // If the function is already parsed we can insert the block address right |
| 2908 | // away. |
| 2909 | BasicBlock *BB; |
| 2910 | unsigned BBID = Record[2]; |
| 2911 | if (!BBID) |
| 2912 | // Invalid reference to entry block. |
| 2913 | return error("Invalid ID"); |
| 2914 | if (!Fn->empty()) { |
| 2915 | Function::iterator BBI = Fn->begin(), BBE = Fn->end(); |
| 2916 | for (size_t I = 0, E = BBID; I != E; ++I) { |
| 2917 | if (BBI == BBE) |
| 2918 | return error("Invalid ID"); |
| 2919 | ++BBI; |
| 2920 | } |
| 2921 | BB = &*BBI; |
| 2922 | } else { |
| 2923 | // Otherwise insert a placeholder and remember it so it can be inserted |
| 2924 | // when the function is parsed. |
| 2925 | auto &FwdBBs = BasicBlockFwdRefs[Fn]; |
| 2926 | if (FwdBBs.empty()) |
| 2927 | BasicBlockFwdRefQueue.push_back(Fn); |
| 2928 | if (FwdBBs.size() < BBID + 1) |
| 2929 | FwdBBs.resize(BBID + 1); |
| 2930 | if (!FwdBBs[BBID]) |
| 2931 | FwdBBs[BBID] = BasicBlock::Create(Context); |
| 2932 | BB = FwdBBs[BBID]; |
| 2933 | } |
| 2934 | V = BlockAddress::get(Fn, BB); |
| 2935 | break; |
| 2936 | } |
| 2937 | case bitc::CST_CODE_DSO_LOCAL_EQUIVALENT: { |
| 2938 | if (Record.size() < 2) |
| 2939 | return error("Invalid record"); |
| 2940 | Type *GVTy = getTypeByID(Record[0]); |
| 2941 | if (!GVTy) |
| 2942 | return error("Invalid record"); |
| 2943 | GlobalValue *GV = dyn_cast_or_null<GlobalValue>( |
| 2944 | ValueList.getConstantFwdRef(Record[1], GVTy)); |
| 2945 | if (!GV) |
| 2946 | return error("Invalid record"); |
| 2947 | |
| 2948 | V = DSOLocalEquivalent::get(GV); |
| 2949 | break; |
| 2950 | } |
| 2951 | } |
| 2952 | |
| 2953 | assert(V->getType() == flattenPointerTypes(CurFullTy) &&(static_cast <bool> (V->getType() == flattenPointerTypes (CurFullTy) && "Incorrect fully structured type provided for Constant" ) ? void (0) : __assert_fail ("V->getType() == flattenPointerTypes(CurFullTy) && \"Incorrect fully structured type provided for Constant\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2954, __extension__ __PRETTY_FUNCTION__)) |
| 2954 | "Incorrect fully structured type provided for Constant")(static_cast <bool> (V->getType() == flattenPointerTypes (CurFullTy) && "Incorrect fully structured type provided for Constant" ) ? void (0) : __assert_fail ("V->getType() == flattenPointerTypes(CurFullTy) && \"Incorrect fully structured type provided for Constant\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2954, __extension__ __PRETTY_FUNCTION__)); |
| 2955 | ValueList.assignValue(V, NextCstNo, CurFullTy); |
| 2956 | ++NextCstNo; |
| 2957 | } |
| 2958 | } |
| 2959 | |
| 2960 | Error BitcodeReader::parseUseLists() { |
| 2961 | if (Error Err = Stream.EnterSubBlock(bitc::USELIST_BLOCK_ID)) |
| 2962 | return Err; |
| 2963 | |
| 2964 | // Read all the records. |
| 2965 | SmallVector<uint64_t, 64> Record; |
| 2966 | |
| 2967 | while (true) { |
| 2968 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 2969 | if (!MaybeEntry) |
| 2970 | return MaybeEntry.takeError(); |
| 2971 | BitstreamEntry Entry = MaybeEntry.get(); |
| 2972 | |
| 2973 | switch (Entry.Kind) { |
| 2974 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 2975 | case BitstreamEntry::Error: |
| 2976 | return error("Malformed block"); |
| 2977 | case BitstreamEntry::EndBlock: |
| 2978 | return Error::success(); |
| 2979 | case BitstreamEntry::Record: |
| 2980 | // The interesting case. |
| 2981 | break; |
| 2982 | } |
| 2983 | |
| 2984 | // Read a use list record. |
| 2985 | Record.clear(); |
| 2986 | bool IsBB = false; |
| 2987 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 2988 | if (!MaybeRecord) |
| 2989 | return MaybeRecord.takeError(); |
| 2990 | switch (MaybeRecord.get()) { |
| 2991 | default: // Default behavior: unknown type. |
| 2992 | break; |
| 2993 | case bitc::USELIST_CODE_BB: |
| 2994 | IsBB = true; |
| 2995 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; |
| 2996 | case bitc::USELIST_CODE_DEFAULT: { |
| 2997 | unsigned RecordLength = Record.size(); |
| 2998 | if (RecordLength < 3) |
| 2999 | // Records should have at least an ID and two indexes. |
| 3000 | return error("Invalid record"); |
| 3001 | unsigned ID = Record.pop_back_val(); |
| 3002 | |
| 3003 | Value *V; |
| 3004 | if (IsBB) { |
| 3005 | assert(ID < FunctionBBs.size() && "Basic block not found")(static_cast <bool> (ID < FunctionBBs.size() && "Basic block not found") ? void (0) : __assert_fail ("ID < FunctionBBs.size() && \"Basic block not found\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3005, __extension__ __PRETTY_FUNCTION__)); |
| 3006 | V = FunctionBBs[ID]; |
| 3007 | } else |
| 3008 | V = ValueList[ID]; |
| 3009 | unsigned NumUses = 0; |
| 3010 | SmallDenseMap<const Use *, unsigned, 16> Order; |
| 3011 | for (const Use &U : V->materialized_uses()) { |
| 3012 | if (++NumUses > Record.size()) |
| 3013 | break; |
| 3014 | Order[&U] = Record[NumUses - 1]; |
| 3015 | } |
| 3016 | if (Order.size() != Record.size() || NumUses > Record.size()) |
| 3017 | // Mismatches can happen if the functions are being materialized lazily |
| 3018 | // (out-of-order), or a value has been upgraded. |
| 3019 | break; |
| 3020 | |
| 3021 | V->sortUseList([&](const Use &L, const Use &R) { |
| 3022 | return Order.lookup(&L) < Order.lookup(&R); |
| 3023 | }); |
| 3024 | break; |
| 3025 | } |
| 3026 | } |
| 3027 | } |
| 3028 | } |
| 3029 | |
| 3030 | /// When we see the block for metadata, remember where it is and then skip it. |
| 3031 | /// This lets us lazily deserialize the metadata. |
| 3032 | Error BitcodeReader::rememberAndSkipMetadata() { |
| 3033 | // Save the current stream state. |
| 3034 | uint64_t CurBit = Stream.GetCurrentBitNo(); |
| 3035 | DeferredMetadataInfo.push_back(CurBit); |
| 3036 | |
| 3037 | // Skip over the block for now. |
| 3038 | if (Error Err = Stream.SkipBlock()) |
| 3039 | return Err; |
| 3040 | return Error::success(); |
| 3041 | } |
| 3042 | |
| 3043 | Error BitcodeReader::materializeMetadata() { |
| 3044 | for (uint64_t BitPos : DeferredMetadataInfo) { |
| 3045 | // Move the bit stream to the saved position. |
| 3046 | if (Error JumpFailed = Stream.JumpToBit(BitPos)) |
| 3047 | return JumpFailed; |
| 3048 | if (Error Err = MDLoader->parseModuleMetadata()) |
| 3049 | return Err; |
| 3050 | } |
| 3051 | |
| 3052 | // Upgrade "Linker Options" module flag to "llvm.linker.options" module-level |
| 3053 | // metadata. Only upgrade if the new option doesn't exist to avoid upgrade |
| 3054 | // multiple times. |
| 3055 | if (!TheModule->getNamedMetadata("llvm.linker.options")) { |
| 3056 | if (Metadata *Val = TheModule->getModuleFlag("Linker Options")) { |
| 3057 | NamedMDNode *LinkerOpts = |
| 3058 | TheModule->getOrInsertNamedMetadata("llvm.linker.options"); |
| 3059 | for (const MDOperand &MDOptions : cast<MDNode>(Val)->operands()) |
| 3060 | LinkerOpts->addOperand(cast<MDNode>(MDOptions)); |
| 3061 | } |
| 3062 | } |
| 3063 | |
| 3064 | DeferredMetadataInfo.clear(); |
| 3065 | return Error::success(); |
| 3066 | } |
| 3067 | |
| 3068 | void BitcodeReader::setStripDebugInfo() { StripDebugInfo = true; } |
| 3069 | |
| 3070 | /// When we see the block for a function body, remember where it is and then |
| 3071 | /// skip it. This lets us lazily deserialize the functions. |
| 3072 | Error BitcodeReader::rememberAndSkipFunctionBody() { |
| 3073 | // Get the function we are talking about. |
| 3074 | if (FunctionsWithBodies.empty()) |
| 3075 | return error("Insufficient function protos"); |
| 3076 | |
| 3077 | Function *Fn = FunctionsWithBodies.back(); |
| 3078 | FunctionsWithBodies.pop_back(); |
| 3079 | |
| 3080 | // Save the current stream state. |
| 3081 | uint64_t CurBit = Stream.GetCurrentBitNo(); |
| 3082 | assert((static_cast <bool> ((DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo [Fn] == CurBit) && "Mismatch between VST and scanned function offsets" ) ? void (0) : __assert_fail ("(DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && \"Mismatch between VST and scanned function offsets\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3084, __extension__ __PRETTY_FUNCTION__)) |
| 3083 | (DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) &&(static_cast <bool> ((DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo [Fn] == CurBit) && "Mismatch between VST and scanned function offsets" ) ? void (0) : __assert_fail ("(DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && \"Mismatch between VST and scanned function offsets\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3084, __extension__ __PRETTY_FUNCTION__)) |
| 3084 | "Mismatch between VST and scanned function offsets")(static_cast <bool> ((DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo [Fn] == CurBit) && "Mismatch between VST and scanned function offsets" ) ? void (0) : __assert_fail ("(DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && \"Mismatch between VST and scanned function offsets\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3084, __extension__ __PRETTY_FUNCTION__)); |
| 3085 | DeferredFunctionInfo[Fn] = CurBit; |
| 3086 | |
| 3087 | // Skip over the function block for now. |
| 3088 | if (Error Err = Stream.SkipBlock()) |
| 3089 | return Err; |
| 3090 | return Error::success(); |
| 3091 | } |
| 3092 | |
| 3093 | Error BitcodeReader::globalCleanup() { |
| 3094 | // Patch the initializers for globals and aliases up. |
| 3095 | if (Error Err = resolveGlobalAndIndirectSymbolInits()) |
| 3096 | return Err; |
| 3097 | if (!GlobalInits.empty() || !IndirectSymbolInits.empty()) |
| 3098 | return error("Malformed global initializer set"); |
| 3099 | |
| 3100 | // Look for intrinsic functions which need to be upgraded at some point |
| 3101 | // and functions that need to have their function attributes upgraded. |
| 3102 | for (Function &F : *TheModule) { |
| 3103 | MDLoader->upgradeDebugIntrinsics(F); |
| 3104 | Function *NewFn; |
| 3105 | if (UpgradeIntrinsicFunction(&F, NewFn)) |
| 3106 | UpgradedIntrinsics[&F] = NewFn; |
| 3107 | else if (auto Remangled = Intrinsic::remangleIntrinsicFunction(&F)) |
| 3108 | // Some types could be renamed during loading if several modules are |
| 3109 | // loaded in the same LLVMContext (LTO scenario). In this case we should |
| 3110 | // remangle intrinsics names as well. |
| 3111 | RemangledIntrinsics[&F] = Remangled.getValue(); |
| 3112 | // Look for functions that rely on old function attribute behavior. |
| 3113 | UpgradeFunctionAttributes(F); |
| 3114 | } |
| 3115 | |
| 3116 | // Look for global variables which need to be renamed. |
| 3117 | std::vector<std::pair<GlobalVariable *, GlobalVariable *>> UpgradedVariables; |
| 3118 | for (GlobalVariable &GV : TheModule->globals()) |
| 3119 | if (GlobalVariable *Upgraded = UpgradeGlobalVariable(&GV)) |
| 3120 | UpgradedVariables.emplace_back(&GV, Upgraded); |
| 3121 | for (auto &Pair : UpgradedVariables) { |
| 3122 | Pair.first->eraseFromParent(); |
| 3123 | TheModule->getGlobalList().push_back(Pair.second); |
| 3124 | } |
| 3125 | |
| 3126 | // Force deallocation of memory for these vectors to favor the client that |
| 3127 | // want lazy deserialization. |
| 3128 | std::vector<std::pair<GlobalVariable *, unsigned>>().swap(GlobalInits); |
| 3129 | std::vector<std::pair<GlobalIndirectSymbol *, unsigned>>().swap( |
| 3130 | IndirectSymbolInits); |
| 3131 | return Error::success(); |
| 3132 | } |
| 3133 | |
| 3134 | /// Support for lazy parsing of function bodies. This is required if we |
| 3135 | /// either have an old bitcode file without a VST forward declaration record, |
| 3136 | /// or if we have an anonymous function being materialized, since anonymous |
| 3137 | /// functions do not have a name and are therefore not in the VST. |
| 3138 | Error BitcodeReader::rememberAndSkipFunctionBodies() { |
| 3139 | if (Error JumpFailed = Stream.JumpToBit(NextUnreadBit)) |
| 3140 | return JumpFailed; |
| 3141 | |
| 3142 | if (Stream.AtEndOfStream()) |
| 3143 | return error("Could not find function in stream"); |
| 3144 | |
| 3145 | if (!SeenFirstFunctionBody) |
| 3146 | return error("Trying to materialize functions before seeing function blocks"); |
| 3147 | |
| 3148 | // An old bitcode file with the symbol table at the end would have |
| 3149 | // finished the parse greedily. |
| 3150 | assert(SeenValueSymbolTable)(static_cast <bool> (SeenValueSymbolTable) ? void (0) : __assert_fail ("SeenValueSymbolTable", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3150, __extension__ __PRETTY_FUNCTION__)); |
| 3151 | |
| 3152 | SmallVector<uint64_t, 64> Record; |
| 3153 | |
| 3154 | while (true) { |
| 3155 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); |
| 3156 | if (!MaybeEntry) |
| 3157 | return MaybeEntry.takeError(); |
| 3158 | llvm::BitstreamEntry Entry = MaybeEntry.get(); |
| 3159 | |
| 3160 | switch (Entry.Kind) { |
| 3161 | default: |
| 3162 | return error("Expect SubBlock"); |
| 3163 | case BitstreamEntry::SubBlock: |
| 3164 | switch (Entry.ID) { |
| 3165 | default: |
| 3166 | return error("Expect function block"); |
| 3167 | case bitc::FUNCTION_BLOCK_ID: |
| 3168 | if (Error Err = rememberAndSkipFunctionBody()) |
| 3169 | return Err; |
| 3170 | NextUnreadBit = Stream.GetCurrentBitNo(); |
| 3171 | return Error::success(); |
| 3172 | } |
| 3173 | } |
| 3174 | } |
| 3175 | } |
| 3176 | |
| 3177 | bool BitcodeReaderBase::readBlockInfo() { |
| 3178 | Expected<Optional<BitstreamBlockInfo>> MaybeNewBlockInfo = |
| 3179 | Stream.ReadBlockInfoBlock(); |
| 3180 | if (!MaybeNewBlockInfo) |
| 3181 | return true; // FIXME Handle the error. |
| 3182 | Optional<BitstreamBlockInfo> NewBlockInfo = |
| 3183 | std::move(MaybeNewBlockInfo.get()); |
| 3184 | if (!NewBlockInfo) |
| 3185 | return true; |
| 3186 | BlockInfo = std::move(*NewBlockInfo); |
| 3187 | return false; |
| 3188 | } |
| 3189 | |
| 3190 | Error BitcodeReader::parseComdatRecord(ArrayRef<uint64_t> Record) { |
| 3191 | // v1: [selection_kind, name] |
| 3192 | // v2: [strtab_offset, strtab_size, selection_kind] |
| 3193 | StringRef Name; |
| 3194 | std::tie(Name, Record) = readNameFromStrtab(Record); |
| 3195 | |
| 3196 | if (Record.empty()) |
| 3197 | return error("Invalid record"); |
| 3198 | Comdat::SelectionKind SK = getDecodedComdatSelectionKind(Record[0]); |
| 3199 | std::string OldFormatName; |
| 3200 | if (!UseStrtab) { |
| 3201 | if (Record.size() < 2) |
| 3202 | return error("Invalid record"); |
| 3203 | unsigned ComdatNameSize = Record[1]; |
| 3204 | OldFormatName.reserve(ComdatNameSize); |
| 3205 | for (unsigned i = 0; i != ComdatNameSize; ++i) |
| 3206 | OldFormatName += (char)Record[2 + i]; |
| 3207 | Name = OldFormatName; |
| 3208 | } |
| 3209 | Comdat *C = TheModule->getOrInsertComdat(Name); |
| 3210 | C->setSelectionKind(SK); |
| 3211 | ComdatList.push_back(C); |
| 3212 | return Error::success(); |
| 3213 | } |
| 3214 | |
| 3215 | static void inferDSOLocal(GlobalValue *GV) { |
| 3216 | // infer dso_local from linkage and visibility if it is not encoded. |
| 3217 | if (GV->hasLocalLinkage() || |
| 3218 | (!GV->hasDefaultVisibility() && !GV->hasExternalWeakLinkage())) |
| 3219 | GV->setDSOLocal(true); |
| 3220 | } |
| 3221 | |
| 3222 | Error BitcodeReader::parseGlobalVarRecord(ArrayRef<uint64_t> Record) { |
| 3223 | // v1: [pointer type, isconst, initid, linkage, alignment, section, |
| 3224 | // visibility, threadlocal, unnamed_addr, externally_initialized, |
| 3225 | // dllstorageclass, comdat, attributes, preemption specifier, |
| 3226 | // partition strtab offset, partition strtab size] (name in VST) |
| 3227 | // v2: [strtab_offset, strtab_size, v1] |
| 3228 | StringRef Name; |
| 3229 | std::tie(Name, Record) = readNameFromStrtab(Record); |
| 3230 | |
| 3231 | if (Record.size() < 6) |
| 3232 | return error("Invalid record"); |
| 3233 | Type *FullTy = getFullyStructuredTypeByID(Record[0]); |
| 3234 | Type *Ty = flattenPointerTypes(FullTy); |
| 3235 | if (!Ty) |
| 3236 | return error("Invalid record"); |
| 3237 | bool isConstant = Record[1] & 1; |
| 3238 | bool explicitType = Record[1] & 2; |
| 3239 | unsigned AddressSpace; |
| 3240 | if (explicitType) { |
| 3241 | AddressSpace = Record[1] >> 2; |
| 3242 | } else { |
| 3243 | if (!Ty->isPointerTy()) |
| 3244 | return error("Invalid type for value"); |
| 3245 | AddressSpace = cast<PointerType>(Ty)->getAddressSpace(); |
| 3246 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); |
| 3247 | } |
| 3248 | |
| 3249 | uint64_t RawLinkage = Record[3]; |
| 3250 | GlobalValue::LinkageTypes Linkage = getDecodedLinkage(RawLinkage); |
| 3251 | MaybeAlign Alignment; |
| 3252 | if (Error Err = parseAlignmentValue(Record[4], Alignment)) |
| 3253 | return Err; |
| 3254 | std::string Section; |
| 3255 | if (Record[5]) { |
| 3256 | if (Record[5] - 1 >= SectionTable.size()) |
| 3257 | return error("Invalid ID"); |
| 3258 | Section = SectionTable[Record[5] - 1]; |
| 3259 | } |
| 3260 | GlobalValue::VisibilityTypes Visibility = GlobalValue::DefaultVisibility; |
| 3261 | // Local linkage must have default visibility. |
| 3262 | // auto-upgrade `hidden` and `protected` for old bitcode. |
| 3263 | if (Record.size() > 6 && !GlobalValue::isLocalLinkage(Linkage)) |
| 3264 | Visibility = getDecodedVisibility(Record[6]); |
| 3265 | |
| 3266 | GlobalVariable::ThreadLocalMode TLM = GlobalVariable::NotThreadLocal; |
| 3267 | if (Record.size() > 7) |
| 3268 | TLM = getDecodedThreadLocalMode(Record[7]); |
| 3269 | |
| 3270 | GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None; |
| 3271 | if (Record.size() > 8) |
| 3272 | UnnamedAddr = getDecodedUnnamedAddrType(Record[8]); |
| 3273 | |
| 3274 | bool ExternallyInitialized = false; |
| 3275 | if (Record.size() > 9) |
| 3276 | ExternallyInitialized = Record[9]; |
| 3277 | |
| 3278 | GlobalVariable *NewGV = |
| 3279 | new GlobalVariable(*TheModule, Ty, isConstant, Linkage, nullptr, Name, |
| 3280 | nullptr, TLM, AddressSpace, ExternallyInitialized); |
| 3281 | NewGV->setAlignment(Alignment); |
| 3282 | if (!Section.empty()) |
| 3283 | NewGV->setSection(Section); |
| 3284 | NewGV->setVisibility(Visibility); |
| 3285 | NewGV->setUnnamedAddr(UnnamedAddr); |
| 3286 | |
| 3287 | if (Record.size() > 10) |
| 3288 | NewGV->setDLLStorageClass(getDecodedDLLStorageClass(Record[10])); |
| 3289 | else |
| 3290 | upgradeDLLImportExportLinkage(NewGV, RawLinkage); |
| 3291 | |
| 3292 | FullTy = PointerType::get(FullTy, AddressSpace); |
| 3293 | assert(NewGV->getType() == flattenPointerTypes(FullTy) &&(static_cast <bool> (NewGV->getType() == flattenPointerTypes (FullTy) && "Incorrect fully specified type for GlobalVariable" ) ? void (0) : __assert_fail ("NewGV->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully specified type for GlobalVariable\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3294, __extension__ __PRETTY_FUNCTION__)) |
| 3294 | "Incorrect fully specified type for GlobalVariable")(static_cast <bool> (NewGV->getType() == flattenPointerTypes (FullTy) && "Incorrect fully specified type for GlobalVariable" ) ? void (0) : __assert_fail ("NewGV->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully specified type for GlobalVariable\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3294, __extension__ __PRETTY_FUNCTION__)); |
| 3295 | ValueList.push_back(NewGV, FullTy); |
| 3296 | |
| 3297 | // Remember which value to use for the global initializer. |
| 3298 | if (unsigned InitID = Record[2]) |
| 3299 | GlobalInits.push_back(std::make_pair(NewGV, InitID - 1)); |
| 3300 | |
| 3301 | if (Record.size() > 11) { |
| 3302 | if (unsigned ComdatID = Record[11]) { |
| 3303 | if (ComdatID > ComdatList.size()) |
| 3304 | return error("Invalid global variable comdat ID"); |
| 3305 | NewGV->setComdat(ComdatList[ComdatID - 1]); |
| 3306 | } |
| 3307 | } else if (hasImplicitComdat(RawLinkage)) { |
| 3308 | NewGV->setComdat(reinterpret_cast<Comdat *>(1)); |
| 3309 | } |
| 3310 | |
| 3311 | if (Record.size() > 12) { |
| 3312 | auto AS = getAttributes(Record[12]).getFnAttributes(); |
| 3313 | NewGV->setAttributes(AS); |
| 3314 | } |
| 3315 | |
| 3316 | if (Record.size() > 13) { |
| 3317 | NewGV->setDSOLocal(getDecodedDSOLocal(Record[13])); |
| 3318 | } |
| 3319 | inferDSOLocal(NewGV); |
| 3320 | |
| 3321 | // Check whether we have enough values to read a partition name. |
| 3322 | if (Record.size() > 15) |
| 3323 | NewGV->setPartition(StringRef(Strtab.data() + Record[14], Record[15])); |
| 3324 | |
| 3325 | return Error::success(); |
| 3326 | } |
| 3327 | |
| 3328 | Error BitcodeReader::parseFunctionRecord(ArrayRef<uint64_t> Record) { |
| 3329 | // v1: [type, callingconv, isproto, linkage, paramattr, alignment, section, |
| 3330 | // visibility, gc, unnamed_addr, prologuedata, dllstorageclass, comdat, |
| 3331 | // prefixdata, personalityfn, preemption specifier, addrspace] (name in VST) |
| 3332 | // v2: [strtab_offset, strtab_size, v1] |
| 3333 | StringRef Name; |
| 3334 | std::tie(Name, Record) = readNameFromStrtab(Record); |
| 3335 | |
| 3336 | if (Record.size() < 8) |
| 3337 | return error("Invalid record"); |
| 3338 | Type *FullFTy = getFullyStructuredTypeByID(Record[0]); |
| 3339 | Type *FTy = flattenPointerTypes(FullFTy); |
| 3340 | if (!FTy) |
| 3341 | return error("Invalid record"); |
| 3342 | if (isa<PointerType>(FTy)) |
| 3343 | std::tie(FullFTy, FTy) = getPointerElementTypes(FullFTy); |
| 3344 | |
| 3345 | if (!isa<FunctionType>(FTy)) |
| 3346 | return error("Invalid type for value"); |
| 3347 | auto CC = static_cast<CallingConv::ID>(Record[1]); |
| 3348 | if (CC & ~CallingConv::MaxID) |
| 3349 | return error("Invalid calling convention ID"); |
| 3350 | |
| 3351 | unsigned AddrSpace = TheModule->getDataLayout().getProgramAddressSpace(); |
| 3352 | if (Record.size() > 16) |
| 3353 | AddrSpace = Record[16]; |
| 3354 | |
| 3355 | Function *Func = |
| 3356 | Function::Create(cast<FunctionType>(FTy), GlobalValue::ExternalLinkage, |
| 3357 | AddrSpace, Name, TheModule); |
| 3358 | |
| 3359 | assert(Func->getFunctionType() == flattenPointerTypes(FullFTy) &&(static_cast <bool> (Func->getFunctionType() == flattenPointerTypes (FullFTy) && "Incorrect fully specified type provided for function" ) ? void (0) : __assert_fail ("Func->getFunctionType() == flattenPointerTypes(FullFTy) && \"Incorrect fully specified type provided for function\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3360, __extension__ __PRETTY_FUNCTION__)) |
| 3360 | "Incorrect fully specified type provided for function")(static_cast <bool> (Func->getFunctionType() == flattenPointerTypes (FullFTy) && "Incorrect fully specified type provided for function" ) ? void (0) : __assert_fail ("Func->getFunctionType() == flattenPointerTypes(FullFTy) && \"Incorrect fully specified type provided for function\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3360, __extension__ __PRETTY_FUNCTION__)); |
| 3361 | FunctionTypes[Func] = cast<FunctionType>(FullFTy); |
| 3362 | |
| 3363 | Func->setCallingConv(CC); |
| 3364 | bool isProto = Record[2]; |
| 3365 | uint64_t RawLinkage = Record[3]; |
| 3366 | Func->setLinkage(getDecodedLinkage(RawLinkage)); |
| 3367 | Func->setAttributes(getAttributes(Record[4])); |
| 3368 | |
| 3369 | // Upgrade any old-style byval or sret without a type by propagating the |
| 3370 | // argument's pointee type. There should be no opaque pointers where the byval |
| 3371 | // type is implicit. |
| 3372 | for (unsigned i = 0; i != Func->arg_size(); ++i) { |
| 3373 | for (Attribute::AttrKind Kind : {Attribute::ByVal, Attribute::StructRet, |
| 3374 | Attribute::InAlloca}) { |
| 3375 | if (!Func->hasParamAttribute(i, Kind)) |
| 3376 | continue; |
| 3377 | |
| 3378 | Func->removeParamAttr(i, Kind); |
| 3379 | |
| 3380 | Type *PTy = cast<FunctionType>(FullFTy)->getParamType(i); |
| 3381 | Type *PtrEltTy = getPointerElementFlatType(PTy); |
| 3382 | Attribute NewAttr; |
| 3383 | switch (Kind) { |
| 3384 | case Attribute::ByVal: |
| 3385 | NewAttr = Attribute::getWithByValType(Context, PtrEltTy); |
| 3386 | break; |
| 3387 | case Attribute::StructRet: |
| 3388 | NewAttr = Attribute::getWithStructRetType(Context, PtrEltTy); |
| 3389 | break; |
| 3390 | case Attribute::InAlloca: |
| 3391 | NewAttr = Attribute::getWithInAllocaType(Context, PtrEltTy); |
| 3392 | break; |
| 3393 | default: |
| 3394 | llvm_unreachable("not an upgraded type attribute")::llvm::llvm_unreachable_internal("not an upgraded type attribute" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3394); |
| 3395 | } |
| 3396 | |
| 3397 | Func->addParamAttr(i, NewAttr); |
| 3398 | } |
| 3399 | } |
| 3400 | |
| 3401 | MaybeAlign Alignment; |
| 3402 | if (Error Err = parseAlignmentValue(Record[5], Alignment)) |
| 3403 | return Err; |
| 3404 | Func->setAlignment(Alignment); |
| 3405 | if (Record[6]) { |
| 3406 | if (Record[6] - 1 >= SectionTable.size()) |
| 3407 | return error("Invalid ID"); |
| 3408 | Func->setSection(SectionTable[Record[6] - 1]); |
| 3409 | } |
| 3410 | // Local linkage must have default visibility. |
| 3411 | // auto-upgrade `hidden` and `protected` for old bitcode. |
| 3412 | if (!Func->hasLocalLinkage()) |
| 3413 | Func->setVisibility(getDecodedVisibility(Record[7])); |
| 3414 | if (Record.size() > 8 && Record[8]) { |
| 3415 | if (Record[8] - 1 >= GCTable.size()) |
| 3416 | return error("Invalid ID"); |
| 3417 | Func->setGC(GCTable[Record[8] - 1]); |
| 3418 | } |
| 3419 | GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None; |
| 3420 | if (Record.size() > 9) |
| 3421 | UnnamedAddr = getDecodedUnnamedAddrType(Record[9]); |
| 3422 | Func->setUnnamedAddr(UnnamedAddr); |
| 3423 | if (Record.size() > 10 && Record[10] != 0) |
| 3424 | FunctionPrologues.push_back(std::make_pair(Func, Record[10] - 1)); |
| 3425 | |
| 3426 | if (Record.size() > 11) |
| 3427 | Func->setDLLStorageClass(getDecodedDLLStorageClass(Record[11])); |
| 3428 | else |
| 3429 | upgradeDLLImportExportLinkage(Func, RawLinkage); |
| 3430 | |
| 3431 | if (Record.size() > 12) { |
| 3432 | if (unsigned ComdatID = Record[12]) { |
| 3433 | if (ComdatID > ComdatList.size()) |
| 3434 | return error("Invalid function comdat ID"); |
| 3435 | Func->setComdat(ComdatList[ComdatID - 1]); |
| 3436 | } |
| 3437 | } else if (hasImplicitComdat(RawLinkage)) { |
| 3438 | Func->setComdat(reinterpret_cast<Comdat *>(1)); |
| 3439 | } |
| 3440 | |
| 3441 | if (Record.size() > 13 && Record[13] != 0) |
| 3442 | FunctionPrefixes.push_back(std::make_pair(Func, Record[13] - 1)); |
| 3443 | |
| 3444 | if (Record.size() > 14 && Record[14] != 0) |
| 3445 | FunctionPersonalityFns.push_back(std::make_pair(Func, Record[14] - 1)); |
| 3446 | |
| 3447 | if (Record.size() > 15) { |
| 3448 | Func->setDSOLocal(getDecodedDSOLocal(Record[15])); |
| 3449 | } |
| 3450 | inferDSOLocal(Func); |
| 3451 | |
| 3452 | // Record[16] is the address space number. |
| 3453 | |
| 3454 | // Check whether we have enough values to read a partition name. |
| 3455 | if (Record.size() > 18) |
| 3456 | Func->setPartition(StringRef(Strtab.data() + Record[17], Record[18])); |
| 3457 | |
| 3458 | Type *FullTy = PointerType::get(FullFTy, AddrSpace); |
| 3459 | assert(Func->getType() == flattenPointerTypes(FullTy) &&(static_cast <bool> (Func->getType() == flattenPointerTypes (FullTy) && "Incorrect fully specified type provided for Function" ) ? void (0) : __assert_fail ("Func->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully specified type provided for Function\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3460, __extension__ __PRETTY_FUNCTION__)) |
| 3460 | "Incorrect fully specified type provided for Function")(static_cast <bool> (Func->getType() == flattenPointerTypes (FullTy) && "Incorrect fully specified type provided for Function" ) ? void (0) : __assert_fail ("Func->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully specified type provided for Function\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3460, __extension__ __PRETTY_FUNCTION__)); |
| 3461 | ValueList.push_back(Func, FullTy); |
| 3462 | |
| 3463 | // If this is a function with a body, remember the prototype we are |
| 3464 | // creating now, so that we can match up the body with them later. |
| 3465 | if (!isProto) { |
| 3466 | Func->setIsMaterializable(true); |
| 3467 | FunctionsWithBodies.push_back(Func); |
| 3468 | DeferredFunctionInfo[Func] = 0; |
| 3469 | } |
| 3470 | return Error::success(); |
| 3471 | } |
| 3472 | |
| 3473 | Error BitcodeReader::parseGlobalIndirectSymbolRecord( |
| 3474 | unsigned BitCode, ArrayRef<uint64_t> Record) { |
| 3475 | // v1 ALIAS_OLD: [alias type, aliasee val#, linkage] (name in VST) |
| 3476 | // v1 ALIAS: [alias type, addrspace, aliasee val#, linkage, visibility, |
| 3477 | // dllstorageclass, threadlocal, unnamed_addr, |
| 3478 | // preemption specifier] (name in VST) |
| 3479 | // v1 IFUNC: [alias type, addrspace, aliasee val#, linkage, |
| 3480 | // visibility, dllstorageclass, threadlocal, unnamed_addr, |
| 3481 | // preemption specifier] (name in VST) |
| 3482 | // v2: [strtab_offset, strtab_size, v1] |
| 3483 | StringRef Name; |
| 3484 | std::tie(Name, Record) = readNameFromStrtab(Record); |
| 3485 | |
| 3486 | bool NewRecord = BitCode != bitc::MODULE_CODE_ALIAS_OLD; |
| 3487 | if (Record.size() < (3 + (unsigned)NewRecord)) |
| 3488 | return error("Invalid record"); |
| 3489 | unsigned OpNum = 0; |
| 3490 | Type *FullTy = getFullyStructuredTypeByID(Record[OpNum++]); |
| 3491 | Type *Ty = flattenPointerTypes(FullTy); |
| 3492 | if (!Ty) |
| 3493 | return error("Invalid record"); |
| 3494 | |
| 3495 | unsigned AddrSpace; |
| 3496 | if (!NewRecord) { |
| 3497 | auto *PTy = dyn_cast<PointerType>(Ty); |
| 3498 | if (!PTy) |
| 3499 | return error("Invalid type for value"); |
| 3500 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); |
| 3501 | AddrSpace = PTy->getAddressSpace(); |
| 3502 | } else { |
| 3503 | AddrSpace = Record[OpNum++]; |
| 3504 | } |
| 3505 | |
| 3506 | auto Val = Record[OpNum++]; |
| 3507 | auto Linkage = Record[OpNum++]; |
| 3508 | GlobalIndirectSymbol *NewGA; |
| 3509 | if (BitCode == bitc::MODULE_CODE_ALIAS || |
| 3510 | BitCode == bitc::MODULE_CODE_ALIAS_OLD) |
| 3511 | NewGA = GlobalAlias::create(Ty, AddrSpace, getDecodedLinkage(Linkage), Name, |
| 3512 | TheModule); |
| 3513 | else |
| 3514 | NewGA = GlobalIFunc::create(Ty, AddrSpace, getDecodedLinkage(Linkage), Name, |
| 3515 | nullptr, TheModule); |
| 3516 | |
| 3517 | assert(NewGA->getValueType() == flattenPointerTypes(FullTy) &&(static_cast <bool> (NewGA->getValueType() == flattenPointerTypes (FullTy) && "Incorrect fully structured type provided for GlobalIndirectSymbol" ) ? void (0) : __assert_fail ("NewGA->getValueType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for GlobalIndirectSymbol\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3518, __extension__ __PRETTY_FUNCTION__)) |
| 3518 | "Incorrect fully structured type provided for GlobalIndirectSymbol")(static_cast <bool> (NewGA->getValueType() == flattenPointerTypes (FullTy) && "Incorrect fully structured type provided for GlobalIndirectSymbol" ) ? void (0) : __assert_fail ("NewGA->getValueType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for GlobalIndirectSymbol\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3518, __extension__ __PRETTY_FUNCTION__)); |
| 3519 | // Local linkage must have default visibility. |
| 3520 | // auto-upgrade `hidden` and `protected` for old bitcode. |
| 3521 | if (OpNum != Record.size()) { |
| 3522 | auto VisInd = OpNum++; |
| 3523 | if (!NewGA->hasLocalLinkage()) |
| 3524 | NewGA->setVisibility(getDecodedVisibility(Record[VisInd])); |
| 3525 | } |
| 3526 | if (BitCode == bitc::MODULE_CODE_ALIAS || |
| 3527 | BitCode == bitc::MODULE_CODE_ALIAS_OLD) { |
| 3528 | if (OpNum != Record.size()) |
| 3529 | NewGA->setDLLStorageClass(getDecodedDLLStorageClass(Record[OpNum++])); |
| 3530 | else |
| 3531 | upgradeDLLImportExportLinkage(NewGA, Linkage); |
| 3532 | if (OpNum != Record.size()) |
| 3533 | NewGA->setThreadLocalMode(getDecodedThreadLocalMode(Record[OpNum++])); |
| 3534 | if (OpNum != Record.size()) |
| 3535 | NewGA->setUnnamedAddr(getDecodedUnnamedAddrType(Record[OpNum++])); |
| 3536 | } |
| 3537 | if (OpNum != Record.size()) |
| 3538 | NewGA->setDSOLocal(getDecodedDSOLocal(Record[OpNum++])); |
| 3539 | inferDSOLocal(NewGA); |
| 3540 | |
| 3541 | // Check whether we have enough values to read a partition name. |
| 3542 | if (OpNum + 1 < Record.size()) { |
| 3543 | NewGA->setPartition( |
| 3544 | StringRef(Strtab.data() + Record[OpNum], Record[OpNum + 1])); |
| 3545 | OpNum += 2; |
Value stored to 'OpNum' is never read | |
| 3546 | } |
| 3547 | |
| 3548 | FullTy = PointerType::get(FullTy, AddrSpace); |
| 3549 | assert(NewGA->getType() == flattenPointerTypes(FullTy) &&(static_cast <bool> (NewGA->getType() == flattenPointerTypes (FullTy) && "Incorrect fully structured type provided for GlobalIndirectSymbol" ) ? void (0) : __assert_fail ("NewGA->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for GlobalIndirectSymbol\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3550, __extension__ __PRETTY_FUNCTION__)) |
| 3550 | "Incorrect fully structured type provided for GlobalIndirectSymbol")(static_cast <bool> (NewGA->getType() == flattenPointerTypes (FullTy) && "Incorrect fully structured type provided for GlobalIndirectSymbol" ) ? void (0) : __assert_fail ("NewGA->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for GlobalIndirectSymbol\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3550, __extension__ __PRETTY_FUNCTION__)); |
| 3551 | ValueList.push_back(NewGA, FullTy); |
| 3552 | IndirectSymbolInits.push_back(std::make_pair(NewGA, Val)); |
| 3553 | return Error::success(); |
| 3554 | } |
| 3555 | |
| 3556 | Error BitcodeReader::parseModule(uint64_t ResumeBit, |
| 3557 | bool ShouldLazyLoadMetadata, |
| 3558 | DataLayoutCallbackTy DataLayoutCallback) { |
| 3559 | if (ResumeBit) { |
| 3560 | if (Error JumpFailed = Stream.JumpToBit(ResumeBit)) |
| 3561 | return JumpFailed; |
| 3562 | } else if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) |
| 3563 | return Err; |
| 3564 | |
| 3565 | SmallVector<uint64_t, 64> Record; |
| 3566 | |
| 3567 | // Parts of bitcode parsing depend on the datalayout. Make sure we |
| 3568 | // finalize the datalayout before we run any of that code. |
| 3569 | bool ResolvedDataLayout = false; |
| 3570 | auto ResolveDataLayout = [&] { |
| 3571 | if (ResolvedDataLayout) |
| 3572 | return; |
| 3573 | |
| 3574 | // datalayout and triple can't be parsed after this point. |
| 3575 | ResolvedDataLayout = true; |
| 3576 | |
| 3577 | // Upgrade data layout string. |
| 3578 | std::string DL = llvm::UpgradeDataLayoutString( |
| 3579 | TheModule->getDataLayoutStr(), TheModule->getTargetTriple()); |
| 3580 | TheModule->setDataLayout(DL); |
| 3581 | |
| 3582 | if (auto LayoutOverride = |
| 3583 | DataLayoutCallback(TheModule->getTargetTriple())) |
| 3584 | TheModule->setDataLayout(*LayoutOverride); |
| 3585 | }; |
| 3586 | |
| 3587 | // Read all the records for this module. |
| 3588 | while (true) { |
| 3589 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); |
| 3590 | if (!MaybeEntry) |
| 3591 | return MaybeEntry.takeError(); |
| 3592 | llvm::BitstreamEntry Entry = MaybeEntry.get(); |
| 3593 | |
| 3594 | switch (Entry.Kind) { |
| 3595 | case BitstreamEntry::Error: |
| 3596 | return error("Malformed block"); |
| 3597 | case BitstreamEntry::EndBlock: |
| 3598 | ResolveDataLayout(); |
| 3599 | return globalCleanup(); |
| 3600 | |
| 3601 | case BitstreamEntry::SubBlock: |
| 3602 | switch (Entry.ID) { |
| 3603 | default: // Skip unknown content. |
| 3604 | if (Error Err = Stream.SkipBlock()) |
| 3605 | return Err; |
| 3606 | break; |
| 3607 | case bitc::BLOCKINFO_BLOCK_ID: |
| 3608 | if (readBlockInfo()) |
| 3609 | return error("Malformed block"); |
| 3610 | break; |
| 3611 | case bitc::PARAMATTR_BLOCK_ID: |
| 3612 | if (Error Err = parseAttributeBlock()) |
| 3613 | return Err; |
| 3614 | break; |
| 3615 | case bitc::PARAMATTR_GROUP_BLOCK_ID: |
| 3616 | if (Error Err = parseAttributeGroupBlock()) |
| 3617 | return Err; |
| 3618 | break; |
| 3619 | case bitc::TYPE_BLOCK_ID_NEW: |
| 3620 | if (Error Err = parseTypeTable()) |
| 3621 | return Err; |
| 3622 | break; |
| 3623 | case bitc::VALUE_SYMTAB_BLOCK_ID: |
| 3624 | if (!SeenValueSymbolTable) { |
| 3625 | // Either this is an old form VST without function index and an |
| 3626 | // associated VST forward declaration record (which would have caused |
| 3627 | // the VST to be jumped to and parsed before it was encountered |
| 3628 | // normally in the stream), or there were no function blocks to |
| 3629 | // trigger an earlier parsing of the VST. |
| 3630 | assert(VSTOffset == 0 || FunctionsWithBodies.empty())(static_cast <bool> (VSTOffset == 0 || FunctionsWithBodies .empty()) ? void (0) : __assert_fail ("VSTOffset == 0 || FunctionsWithBodies.empty()" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3630, __extension__ __PRETTY_FUNCTION__)); |
| 3631 | if (Error Err = parseValueSymbolTable()) |
| 3632 | return Err; |
| 3633 | SeenValueSymbolTable = true; |
| 3634 | } else { |
| 3635 | // We must have had a VST forward declaration record, which caused |
| 3636 | // the parser to jump to and parse the VST earlier. |
| 3637 | assert(VSTOffset > 0)(static_cast <bool> (VSTOffset > 0) ? void (0) : __assert_fail ("VSTOffset > 0", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3637, __extension__ __PRETTY_FUNCTION__)); |
| 3638 | if (Error Err = Stream.SkipBlock()) |
| 3639 | return Err; |
| 3640 | } |
| 3641 | break; |
| 3642 | case bitc::CONSTANTS_BLOCK_ID: |
| 3643 | if (Error Err = parseConstants()) |
| 3644 | return Err; |
| 3645 | if (Error Err = resolveGlobalAndIndirectSymbolInits()) |
| 3646 | return Err; |
| 3647 | break; |
| 3648 | case bitc::METADATA_BLOCK_ID: |
| 3649 | if (ShouldLazyLoadMetadata) { |
| 3650 | if (Error Err = rememberAndSkipMetadata()) |
| 3651 | return Err; |
| 3652 | break; |
| 3653 | } |
| 3654 | assert(DeferredMetadataInfo.empty() && "Unexpected deferred metadata")(static_cast <bool> (DeferredMetadataInfo.empty() && "Unexpected deferred metadata") ? void (0) : __assert_fail ( "DeferredMetadataInfo.empty() && \"Unexpected deferred metadata\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3654, __extension__ __PRETTY_FUNCTION__)); |
| 3655 | if (Error Err = MDLoader->parseModuleMetadata()) |
| 3656 | return Err; |
| 3657 | break; |
| 3658 | case bitc::METADATA_KIND_BLOCK_ID: |
| 3659 | if (Error Err = MDLoader->parseMetadataKinds()) |
| 3660 | return Err; |
| 3661 | break; |
| 3662 | case bitc::FUNCTION_BLOCK_ID: |
| 3663 | ResolveDataLayout(); |
| 3664 | |
| 3665 | // If this is the first function body we've seen, reverse the |
| 3666 | // FunctionsWithBodies list. |
| 3667 | if (!SeenFirstFunctionBody) { |
| 3668 | std::reverse(FunctionsWithBodies.begin(), FunctionsWithBodies.end()); |
| 3669 | if (Error Err = globalCleanup()) |
| 3670 | return Err; |
| 3671 | SeenFirstFunctionBody = true; |
| 3672 | } |
| 3673 | |
| 3674 | if (VSTOffset > 0) { |
| 3675 | // If we have a VST forward declaration record, make sure we |
| 3676 | // parse the VST now if we haven't already. It is needed to |
| 3677 | // set up the DeferredFunctionInfo vector for lazy reading. |
| 3678 | if (!SeenValueSymbolTable) { |
| 3679 | if (Error Err = BitcodeReader::parseValueSymbolTable(VSTOffset)) |
| 3680 | return Err; |
| 3681 | SeenValueSymbolTable = true; |
| 3682 | // Fall through so that we record the NextUnreadBit below. |
| 3683 | // This is necessary in case we have an anonymous function that |
| 3684 | // is later materialized. Since it will not have a VST entry we |
| 3685 | // need to fall back to the lazy parse to find its offset. |
| 3686 | } else { |
| 3687 | // If we have a VST forward declaration record, but have already |
| 3688 | // parsed the VST (just above, when the first function body was |
| 3689 | // encountered here), then we are resuming the parse after |
| 3690 | // materializing functions. The ResumeBit points to the |
| 3691 | // start of the last function block recorded in the |
| 3692 | // DeferredFunctionInfo map. Skip it. |
| 3693 | if (Error Err = Stream.SkipBlock()) |
| 3694 | return Err; |
| 3695 | continue; |
| 3696 | } |
| 3697 | } |
| 3698 | |
| 3699 | // Support older bitcode files that did not have the function |
| 3700 | // index in the VST, nor a VST forward declaration record, as |
| 3701 | // well as anonymous functions that do not have VST entries. |
| 3702 | // Build the DeferredFunctionInfo vector on the fly. |
| 3703 | if (Error Err = rememberAndSkipFunctionBody()) |
| 3704 | return Err; |
| 3705 | |
| 3706 | // Suspend parsing when we reach the function bodies. Subsequent |
| 3707 | // materialization calls will resume it when necessary. If the bitcode |
| 3708 | // file is old, the symbol table will be at the end instead and will not |
| 3709 | // have been seen yet. In this case, just finish the parse now. |
| 3710 | if (SeenValueSymbolTable) { |
| 3711 | NextUnreadBit = Stream.GetCurrentBitNo(); |
| 3712 | // After the VST has been parsed, we need to make sure intrinsic name |
| 3713 | // are auto-upgraded. |
| 3714 | return globalCleanup(); |
| 3715 | } |
| 3716 | break; |
| 3717 | case bitc::USELIST_BLOCK_ID: |
| 3718 | if (Error Err = parseUseLists()) |
| 3719 | return Err; |
| 3720 | break; |
| 3721 | case bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID: |
| 3722 | if (Error Err = parseOperandBundleTags()) |
| 3723 | return Err; |
| 3724 | break; |
| 3725 | case bitc::SYNC_SCOPE_NAMES_BLOCK_ID: |
| 3726 | if (Error Err = parseSyncScopeNames()) |
| 3727 | return Err; |
| 3728 | break; |
| 3729 | } |
| 3730 | continue; |
| 3731 | |
| 3732 | case BitstreamEntry::Record: |
| 3733 | // The interesting case. |
| 3734 | break; |
| 3735 | } |
| 3736 | |
| 3737 | // Read a record. |
| 3738 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); |
| 3739 | if (!MaybeBitCode) |
| 3740 | return MaybeBitCode.takeError(); |
| 3741 | switch (unsigned BitCode = MaybeBitCode.get()) { |
| 3742 | default: break; // Default behavior, ignore unknown content. |
| 3743 | case bitc::MODULE_CODE_VERSION: { |
| 3744 | Expected<unsigned> VersionOrErr = parseVersionRecord(Record); |
| 3745 | if (!VersionOrErr) |
| 3746 | return VersionOrErr.takeError(); |
| 3747 | UseRelativeIDs = *VersionOrErr >= 1; |
| 3748 | break; |
| 3749 | } |
| 3750 | case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N] |
| 3751 | if (ResolvedDataLayout) |
| 3752 | return error("target triple too late in module"); |
| 3753 | std::string S; |
| 3754 | if (convertToString(Record, 0, S)) |
| 3755 | return error("Invalid record"); |
| 3756 | TheModule->setTargetTriple(S); |
| 3757 | break; |
| 3758 | } |
| 3759 | case bitc::MODULE_CODE_DATALAYOUT: { // DATALAYOUT: [strchr x N] |
| 3760 | if (ResolvedDataLayout) |
| 3761 | return error("datalayout too late in module"); |
| 3762 | std::string S; |
| 3763 | if (convertToString(Record, 0, S)) |
| 3764 | return error("Invalid record"); |
| 3765 | TheModule->setDataLayout(S); |
| 3766 | break; |
| 3767 | } |
| 3768 | case bitc::MODULE_CODE_ASM: { // ASM: [strchr x N] |
| 3769 | std::string S; |
| 3770 | if (convertToString(Record, 0, S)) |
| 3771 | return error("Invalid record"); |
| 3772 | TheModule->setModuleInlineAsm(S); |
| 3773 | break; |
| 3774 | } |
| 3775 | case bitc::MODULE_CODE_DEPLIB: { // DEPLIB: [strchr x N] |
| 3776 | // Deprecated, but still needed to read old bitcode files. |
| 3777 | std::string S; |
| 3778 | if (convertToString(Record, 0, S)) |
| 3779 | return error("Invalid record"); |
| 3780 | // Ignore value. |
| 3781 | break; |
| 3782 | } |
| 3783 | case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N] |
| 3784 | std::string S; |
| 3785 | if (convertToString(Record, 0, S)) |
| 3786 | return error("Invalid record"); |
| 3787 | SectionTable.push_back(S); |
| 3788 | break; |
| 3789 | } |
| 3790 | case bitc::MODULE_CODE_GCNAME: { // SECTIONNAME: [strchr x N] |
| 3791 | std::string S; |
| 3792 | if (convertToString(Record, 0, S)) |
| 3793 | return error("Invalid record"); |
| 3794 | GCTable.push_back(S); |
| 3795 | break; |
| 3796 | } |
| 3797 | case bitc::MODULE_CODE_COMDAT: |
| 3798 | if (Error Err = parseComdatRecord(Record)) |
| 3799 | return Err; |
| 3800 | break; |
| 3801 | case bitc::MODULE_CODE_GLOBALVAR: |
| 3802 | if (Error Err = parseGlobalVarRecord(Record)) |
| 3803 | return Err; |
| 3804 | break; |
| 3805 | case bitc::MODULE_CODE_FUNCTION: |
| 3806 | ResolveDataLayout(); |
| 3807 | if (Error Err = parseFunctionRecord(Record)) |
| 3808 | return Err; |
| 3809 | break; |
| 3810 | case bitc::MODULE_CODE_IFUNC: |
| 3811 | case bitc::MODULE_CODE_ALIAS: |
| 3812 | case bitc::MODULE_CODE_ALIAS_OLD: |
| 3813 | if (Error Err = parseGlobalIndirectSymbolRecord(BitCode, Record)) |
| 3814 | return Err; |
| 3815 | break; |
| 3816 | /// MODULE_CODE_VSTOFFSET: [offset] |
| 3817 | case bitc::MODULE_CODE_VSTOFFSET: |
| 3818 | if (Record.empty()) |
| 3819 | return error("Invalid record"); |
| 3820 | // Note that we subtract 1 here because the offset is relative to one word |
| 3821 | // before the start of the identification or module block, which was |
| 3822 | // historically always the start of the regular bitcode header. |
| 3823 | VSTOffset = Record[0] - 1; |
| 3824 | break; |
| 3825 | /// MODULE_CODE_SOURCE_FILENAME: [namechar x N] |
| 3826 | case bitc::MODULE_CODE_SOURCE_FILENAME: |
| 3827 | SmallString<128> ValueName; |
| 3828 | if (convertToString(Record, 0, ValueName)) |
| 3829 | return error("Invalid record"); |
| 3830 | TheModule->setSourceFileName(ValueName); |
| 3831 | break; |
| 3832 | } |
| 3833 | Record.clear(); |
| 3834 | } |
| 3835 | } |
| 3836 | |
| 3837 | Error BitcodeReader::parseBitcodeInto(Module *M, bool ShouldLazyLoadMetadata, |
| 3838 | bool IsImporting, |
| 3839 | DataLayoutCallbackTy DataLayoutCallback) { |
| 3840 | TheModule = M; |
| 3841 | MDLoader = MetadataLoader(Stream, *M, ValueList, IsImporting, |
| 3842 | [&](unsigned ID) { return getTypeByID(ID); }); |
| 3843 | return parseModule(0, ShouldLazyLoadMetadata, DataLayoutCallback); |
| 3844 | } |
| 3845 | |
| 3846 | Error BitcodeReader::typeCheckLoadStoreInst(Type *ValType, Type *PtrType) { |
| 3847 | if (!isa<PointerType>(PtrType)) |
| 3848 | return error("Load/Store operand is not a pointer type"); |
| 3849 | |
| 3850 | if (!cast<PointerType>(PtrType)->isOpaqueOrPointeeTypeMatches(ValType)) |
| 3851 | return error("Explicit load/store type does not match pointee " |
| 3852 | "type of pointer operand"); |
| 3853 | if (!PointerType::isLoadableOrStorableType(ValType)) |
| 3854 | return error("Cannot load/store from pointer"); |
| 3855 | return Error::success(); |
| 3856 | } |
| 3857 | |
| 3858 | void BitcodeReader::propagateByValSRetTypes(CallBase *CB, |
| 3859 | ArrayRef<Type *> ArgsFullTys) { |
| 3860 | for (unsigned i = 0; i != CB->arg_size(); ++i) { |
| 3861 | for (Attribute::AttrKind Kind : {Attribute::ByVal, Attribute::StructRet, |
| 3862 | Attribute::InAlloca}) { |
| 3863 | if (!CB->paramHasAttr(i, Kind)) |
| 3864 | continue; |
| 3865 | |
| 3866 | CB->removeParamAttr(i, Kind); |
| 3867 | |
| 3868 | Type *PtrEltTy = getPointerElementFlatType(ArgsFullTys[i]); |
| 3869 | Attribute NewAttr; |
| 3870 | switch (Kind) { |
| 3871 | case Attribute::ByVal: |
| 3872 | NewAttr = Attribute::getWithByValType(Context, PtrEltTy); |
| 3873 | break; |
| 3874 | case Attribute::StructRet: |
| 3875 | NewAttr = Attribute::getWithStructRetType(Context, PtrEltTy); |
| 3876 | break; |
| 3877 | case Attribute::InAlloca: |
| 3878 | NewAttr = Attribute::getWithInAllocaType(Context, PtrEltTy); |
| 3879 | break; |
| 3880 | default: |
| 3881 | llvm_unreachable("not an upgraded type attribute")::llvm::llvm_unreachable_internal("not an upgraded type attribute" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3881); |
| 3882 | } |
| 3883 | |
| 3884 | CB->addParamAttr(i, NewAttr); |
| 3885 | } |
| 3886 | } |
| 3887 | } |
| 3888 | |
| 3889 | /// Lazily parse the specified function body block. |
| 3890 | Error BitcodeReader::parseFunctionBody(Function *F) { |
| 3891 | if (Error Err = Stream.EnterSubBlock(bitc::FUNCTION_BLOCK_ID)) |
| 3892 | return Err; |
| 3893 | |
| 3894 | // Unexpected unresolved metadata when parsing function. |
| 3895 | if (MDLoader->hasFwdRefs()) |
| 3896 | return error("Invalid function metadata: incoming forward references"); |
| 3897 | |
| 3898 | InstructionList.clear(); |
| 3899 | unsigned ModuleValueListSize = ValueList.size(); |
| 3900 | unsigned ModuleMDLoaderSize = MDLoader->size(); |
| 3901 | |
| 3902 | // Add all the function arguments to the value table. |
| 3903 | unsigned ArgNo = 0; |
| 3904 | FunctionType *FullFTy = FunctionTypes[F]; |
| 3905 | for (Argument &I : F->args()) { |
| 3906 | assert(I.getType() == flattenPointerTypes(FullFTy->getParamType(ArgNo)) &&(static_cast <bool> (I.getType() == flattenPointerTypes (FullFTy->getParamType(ArgNo)) && "Incorrect fully specified type for Function Argument" ) ? void (0) : __assert_fail ("I.getType() == flattenPointerTypes(FullFTy->getParamType(ArgNo)) && \"Incorrect fully specified type for Function Argument\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3907, __extension__ __PRETTY_FUNCTION__)) |
| 3907 | "Incorrect fully specified type for Function Argument")(static_cast <bool> (I.getType() == flattenPointerTypes (FullFTy->getParamType(ArgNo)) && "Incorrect fully specified type for Function Argument" ) ? void (0) : __assert_fail ("I.getType() == flattenPointerTypes(FullFTy->getParamType(ArgNo)) && \"Incorrect fully specified type for Function Argument\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3907, __extension__ __PRETTY_FUNCTION__)); |
| 3908 | ValueList.push_back(&I, FullFTy->getParamType(ArgNo++)); |
| 3909 | } |
| 3910 | unsigned NextValueNo = ValueList.size(); |
| 3911 | BasicBlock *CurBB = nullptr; |
| 3912 | unsigned CurBBNo = 0; |
| 3913 | |
| 3914 | DebugLoc LastLoc; |
| 3915 | auto getLastInstruction = [&]() -> Instruction * { |
| 3916 | if (CurBB && !CurBB->empty()) |
| 3917 | return &CurBB->back(); |
| 3918 | else if (CurBBNo && FunctionBBs[CurBBNo - 1] && |
| 3919 | !FunctionBBs[CurBBNo - 1]->empty()) |
| 3920 | return &FunctionBBs[CurBBNo - 1]->back(); |
| 3921 | return nullptr; |
| 3922 | }; |
| 3923 | |
| 3924 | std::vector<OperandBundleDef> OperandBundles; |
| 3925 | |
| 3926 | // Read all the records. |
| 3927 | SmallVector<uint64_t, 64> Record; |
| 3928 | |
| 3929 | while (true) { |
| 3930 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); |
| 3931 | if (!MaybeEntry) |
| 3932 | return MaybeEntry.takeError(); |
| 3933 | llvm::BitstreamEntry Entry = MaybeEntry.get(); |
| 3934 | |
| 3935 | switch (Entry.Kind) { |
| 3936 | case BitstreamEntry::Error: |
| 3937 | return error("Malformed block"); |
| 3938 | case BitstreamEntry::EndBlock: |
| 3939 | goto OutOfRecordLoop; |
| 3940 | |
| 3941 | case BitstreamEntry::SubBlock: |
| 3942 | switch (Entry.ID) { |
| 3943 | default: // Skip unknown content. |
| 3944 | if (Error Err = Stream.SkipBlock()) |
| 3945 | return Err; |
| 3946 | break; |
| 3947 | case bitc::CONSTANTS_BLOCK_ID: |
| 3948 | if (Error Err = parseConstants()) |
| 3949 | return Err; |
| 3950 | NextValueNo = ValueList.size(); |
| 3951 | break; |
| 3952 | case bitc::VALUE_SYMTAB_BLOCK_ID: |
| 3953 | if (Error Err = parseValueSymbolTable()) |
| 3954 | return Err; |
| 3955 | break; |
| 3956 | case bitc::METADATA_ATTACHMENT_ID: |
| 3957 | if (Error Err = MDLoader->parseMetadataAttachment(*F, InstructionList)) |
| 3958 | return Err; |
| 3959 | break; |
| 3960 | case bitc::METADATA_BLOCK_ID: |
| 3961 | assert(DeferredMetadataInfo.empty() &&(static_cast <bool> (DeferredMetadataInfo.empty() && "Must read all module-level metadata before function-level") ? void (0) : __assert_fail ("DeferredMetadataInfo.empty() && \"Must read all module-level metadata before function-level\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3962, __extension__ __PRETTY_FUNCTION__)) |
| 3962 | "Must read all module-level metadata before function-level")(static_cast <bool> (DeferredMetadataInfo.empty() && "Must read all module-level metadata before function-level") ? void (0) : __assert_fail ("DeferredMetadataInfo.empty() && \"Must read all module-level metadata before function-level\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3962, __extension__ __PRETTY_FUNCTION__)); |
| 3963 | if (Error Err = MDLoader->parseFunctionMetadata()) |
| 3964 | return Err; |
| 3965 | break; |
| 3966 | case bitc::USELIST_BLOCK_ID: |
| 3967 | if (Error Err = parseUseLists()) |
| 3968 | return Err; |
| 3969 | break; |
| 3970 | } |
| 3971 | continue; |
| 3972 | |
| 3973 | case BitstreamEntry::Record: |
| 3974 | // The interesting case. |
| 3975 | break; |
| 3976 | } |
| 3977 | |
| 3978 | // Read a record. |
| 3979 | Record.clear(); |
| 3980 | Instruction *I = nullptr; |
| 3981 | Type *FullTy = nullptr; |
| 3982 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); |
| 3983 | if (!MaybeBitCode) |
| 3984 | return MaybeBitCode.takeError(); |
| 3985 | switch (unsigned BitCode = MaybeBitCode.get()) { |
| 3986 | default: // Default behavior: reject |
| 3987 | return error("Invalid value"); |
| 3988 | case bitc::FUNC_CODE_DECLAREBLOCKS: { // DECLAREBLOCKS: [nblocks] |
| 3989 | if (Record.empty() || Record[0] == 0) |
| 3990 | return error("Invalid record"); |
| 3991 | // Create all the basic blocks for the function. |
| 3992 | FunctionBBs.resize(Record[0]); |
| 3993 | |
| 3994 | // See if anything took the address of blocks in this function. |
| 3995 | auto BBFRI = BasicBlockFwdRefs.find(F); |
| 3996 | if (BBFRI == BasicBlockFwdRefs.end()) { |
| 3997 | for (unsigned i = 0, e = FunctionBBs.size(); i != e; ++i) |
| 3998 | FunctionBBs[i] = BasicBlock::Create(Context, "", F); |
| 3999 | } else { |
| 4000 | auto &BBRefs = BBFRI->second; |
| 4001 | // Check for invalid basic block references. |
| 4002 | if (BBRefs.size() > FunctionBBs.size()) |
| 4003 | return error("Invalid ID"); |
| 4004 | assert(!BBRefs.empty() && "Unexpected empty array")(static_cast <bool> (!BBRefs.empty() && "Unexpected empty array" ) ? void (0) : __assert_fail ("!BBRefs.empty() && \"Unexpected empty array\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4004, __extension__ __PRETTY_FUNCTION__)); |
| 4005 | assert(!BBRefs.front() && "Invalid reference to entry block")(static_cast <bool> (!BBRefs.front() && "Invalid reference to entry block" ) ? void (0) : __assert_fail ("!BBRefs.front() && \"Invalid reference to entry block\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4005, __extension__ __PRETTY_FUNCTION__)); |
| 4006 | for (unsigned I = 0, E = FunctionBBs.size(), RE = BBRefs.size(); I != E; |
| 4007 | ++I) |
| 4008 | if (I < RE && BBRefs[I]) { |
| 4009 | BBRefs[I]->insertInto(F); |
| 4010 | FunctionBBs[I] = BBRefs[I]; |
| 4011 | } else { |
| 4012 | FunctionBBs[I] = BasicBlock::Create(Context, "", F); |
| 4013 | } |
| 4014 | |
| 4015 | // Erase from the table. |
| 4016 | BasicBlockFwdRefs.erase(BBFRI); |
| 4017 | } |
| 4018 | |
| 4019 | CurBB = FunctionBBs[0]; |
| 4020 | continue; |
| 4021 | } |
| 4022 | |
| 4023 | case bitc::FUNC_CODE_DEBUG_LOC_AGAIN: // DEBUG_LOC_AGAIN |
| 4024 | // This record indicates that the last instruction is at the same |
| 4025 | // location as the previous instruction with a location. |
| 4026 | I = getLastInstruction(); |
| 4027 | |
| 4028 | if (!I) |
| 4029 | return error("Invalid record"); |
| 4030 | I->setDebugLoc(LastLoc); |
| 4031 | I = nullptr; |
| 4032 | continue; |
| 4033 | |
| 4034 | case bitc::FUNC_CODE_DEBUG_LOC: { // DEBUG_LOC: [line, col, scope, ia] |
| 4035 | I = getLastInstruction(); |
| 4036 | if (!I || Record.size() < 4) |
| 4037 | return error("Invalid record"); |
| 4038 | |
| 4039 | unsigned Line = Record[0], Col = Record[1]; |
| 4040 | unsigned ScopeID = Record[2], IAID = Record[3]; |
| 4041 | bool isImplicitCode = Record.size() == 5 && Record[4]; |
| 4042 | |
| 4043 | MDNode *Scope = nullptr, *IA = nullptr; |
| 4044 | if (ScopeID) { |
| 4045 | Scope = dyn_cast_or_null<MDNode>( |
| 4046 | MDLoader->getMetadataFwdRefOrLoad(ScopeID - 1)); |
| 4047 | if (!Scope) |
| 4048 | return error("Invalid record"); |
| 4049 | } |
| 4050 | if (IAID) { |
| 4051 | IA = dyn_cast_or_null<MDNode>( |
| 4052 | MDLoader->getMetadataFwdRefOrLoad(IAID - 1)); |
| 4053 | if (!IA) |
| 4054 | return error("Invalid record"); |
| 4055 | } |
| 4056 | LastLoc = DILocation::get(Scope->getContext(), Line, Col, Scope, IA, |
| 4057 | isImplicitCode); |
| 4058 | I->setDebugLoc(LastLoc); |
| 4059 | I = nullptr; |
| 4060 | continue; |
| 4061 | } |
| 4062 | case bitc::FUNC_CODE_INST_UNOP: { // UNOP: [opval, ty, opcode] |
| 4063 | unsigned OpNum = 0; |
| 4064 | Value *LHS; |
| 4065 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || |
| 4066 | OpNum+1 > Record.size()) |
| 4067 | return error("Invalid record"); |
| 4068 | |
| 4069 | int Opc = getDecodedUnaryOpcode(Record[OpNum++], LHS->getType()); |
| 4070 | if (Opc == -1) |
| 4071 | return error("Invalid record"); |
| 4072 | I = UnaryOperator::Create((Instruction::UnaryOps)Opc, LHS); |
| 4073 | InstructionList.push_back(I); |
| 4074 | if (OpNum < Record.size()) { |
| 4075 | if (isa<FPMathOperator>(I)) { |
| 4076 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); |
| 4077 | if (FMF.any()) |
| 4078 | I->setFastMathFlags(FMF); |
| 4079 | } |
| 4080 | } |
| 4081 | break; |
| 4082 | } |
| 4083 | case bitc::FUNC_CODE_INST_BINOP: { // BINOP: [opval, ty, opval, opcode] |
| 4084 | unsigned OpNum = 0; |
| 4085 | Value *LHS, *RHS; |
| 4086 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || |
| 4087 | popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS) || |
| 4088 | OpNum+1 > Record.size()) |
| 4089 | return error("Invalid record"); |
| 4090 | |
| 4091 | int Opc = getDecodedBinaryOpcode(Record[OpNum++], LHS->getType()); |
| 4092 | if (Opc == -1) |
| 4093 | return error("Invalid record"); |
| 4094 | I = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS); |
| 4095 | InstructionList.push_back(I); |
| 4096 | if (OpNum < Record.size()) { |
| 4097 | if (Opc == Instruction::Add || |
| 4098 | Opc == Instruction::Sub || |
| 4099 | Opc == Instruction::Mul || |
| 4100 | Opc == Instruction::Shl) { |
| 4101 | if (Record[OpNum] & (1 << bitc::OBO_NO_SIGNED_WRAP)) |
| 4102 | cast<BinaryOperator>(I)->setHasNoSignedWrap(true); |
| 4103 | if (Record[OpNum] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) |
| 4104 | cast<BinaryOperator>(I)->setHasNoUnsignedWrap(true); |
| 4105 | } else if (Opc == Instruction::SDiv || |
| 4106 | Opc == Instruction::UDiv || |
| 4107 | Opc == Instruction::LShr || |
| 4108 | Opc == Instruction::AShr) { |
| 4109 | if (Record[OpNum] & (1 << bitc::PEO_EXACT)) |
| 4110 | cast<BinaryOperator>(I)->setIsExact(true); |
| 4111 | } else if (isa<FPMathOperator>(I)) { |
| 4112 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); |
| 4113 | if (FMF.any()) |
| 4114 | I->setFastMathFlags(FMF); |
| 4115 | } |
| 4116 | |
| 4117 | } |
| 4118 | break; |
| 4119 | } |
| 4120 | case bitc::FUNC_CODE_INST_CAST: { // CAST: [opval, opty, destty, castopc] |
| 4121 | unsigned OpNum = 0; |
| 4122 | Value *Op; |
| 4123 | if (getValueTypePair(Record, OpNum, NextValueNo, Op) || |
| 4124 | OpNum+2 != Record.size()) |
| 4125 | return error("Invalid record"); |
| 4126 | |
| 4127 | FullTy = getFullyStructuredTypeByID(Record[OpNum]); |
| 4128 | Type *ResTy = flattenPointerTypes(FullTy); |
| 4129 | int Opc = getDecodedCastOpcode(Record[OpNum + 1]); |
| 4130 | if (Opc == -1 || !ResTy) |
| 4131 | return error("Invalid record"); |
| 4132 | Instruction *Temp = nullptr; |
| 4133 | if ((I = UpgradeBitCastInst(Opc, Op, ResTy, Temp))) { |
| 4134 | if (Temp) { |
| 4135 | InstructionList.push_back(Temp); |
| 4136 | assert(CurBB && "No current BB?")(static_cast <bool> (CurBB && "No current BB?") ? void (0) : __assert_fail ("CurBB && \"No current BB?\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4136, __extension__ __PRETTY_FUNCTION__)); |
| 4137 | CurBB->getInstList().push_back(Temp); |
| 4138 | } |
| 4139 | } else { |
| 4140 | auto CastOp = (Instruction::CastOps)Opc; |
| 4141 | if (!CastInst::castIsValid(CastOp, Op, ResTy)) |
| 4142 | return error("Invalid cast"); |
| 4143 | I = CastInst::Create(CastOp, Op, ResTy); |
| 4144 | } |
| 4145 | InstructionList.push_back(I); |
| 4146 | break; |
| 4147 | } |
| 4148 | case bitc::FUNC_CODE_INST_INBOUNDS_GEP_OLD: |
| 4149 | case bitc::FUNC_CODE_INST_GEP_OLD: |
| 4150 | case bitc::FUNC_CODE_INST_GEP: { // GEP: type, [n x operands] |
| 4151 | unsigned OpNum = 0; |
| 4152 | |
| 4153 | Type *Ty; |
| 4154 | bool InBounds; |
| 4155 | |
| 4156 | if (BitCode == bitc::FUNC_CODE_INST_GEP) { |
| 4157 | InBounds = Record[OpNum++]; |
| 4158 | FullTy = getFullyStructuredTypeByID(Record[OpNum++]); |
| 4159 | Ty = flattenPointerTypes(FullTy); |
| 4160 | } else { |
| 4161 | InBounds = BitCode == bitc::FUNC_CODE_INST_INBOUNDS_GEP_OLD; |
| 4162 | Ty = nullptr; |
| 4163 | } |
| 4164 | |
| 4165 | Value *BasePtr; |
| 4166 | Type *FullBaseTy = nullptr; |
| 4167 | if (getValueTypePair(Record, OpNum, NextValueNo, BasePtr, &FullBaseTy)) |
| 4168 | return error("Invalid record"); |
| 4169 | |
| 4170 | if (!Ty) { |
| 4171 | std::tie(FullTy, Ty) = |
| 4172 | getPointerElementTypes(FullBaseTy->getScalarType()); |
| 4173 | } else if (!cast<PointerType>(FullBaseTy->getScalarType()) |
| 4174 | ->isOpaqueOrPointeeTypeMatches(Ty)) |
| 4175 | return error( |
| 4176 | "Explicit gep type does not match pointee type of pointer operand"); |
| 4177 | |
| 4178 | SmallVector<Value*, 16> GEPIdx; |
| 4179 | while (OpNum != Record.size()) { |
| 4180 | Value *Op; |
| 4181 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) |
| 4182 | return error("Invalid record"); |
| 4183 | GEPIdx.push_back(Op); |
| 4184 | } |
| 4185 | |
| 4186 | I = GetElementPtrInst::Create(Ty, BasePtr, GEPIdx); |
| 4187 | FullTy = GetElementPtrInst::getGEPReturnType(FullTy, I, GEPIdx); |
| 4188 | |
| 4189 | InstructionList.push_back(I); |
| 4190 | if (InBounds) |
| 4191 | cast<GetElementPtrInst>(I)->setIsInBounds(true); |
| 4192 | break; |
| 4193 | } |
| 4194 | |
| 4195 | case bitc::FUNC_CODE_INST_EXTRACTVAL: { |
| 4196 | // EXTRACTVAL: [opty, opval, n x indices] |
| 4197 | unsigned OpNum = 0; |
| 4198 | Value *Agg; |
| 4199 | if (getValueTypePair(Record, OpNum, NextValueNo, Agg, &FullTy)) |
| 4200 | return error("Invalid record"); |
| 4201 | |
| 4202 | unsigned RecSize = Record.size(); |
| 4203 | if (OpNum == RecSize) |
| 4204 | return error("EXTRACTVAL: Invalid instruction with 0 indices"); |
| 4205 | |
| 4206 | SmallVector<unsigned, 4> EXTRACTVALIdx; |
| 4207 | for (; OpNum != RecSize; ++OpNum) { |
| 4208 | bool IsArray = FullTy->isArrayTy(); |
| 4209 | bool IsStruct = FullTy->isStructTy(); |
| 4210 | uint64_t Index = Record[OpNum]; |
| 4211 | |
| 4212 | if (!IsStruct && !IsArray) |
| 4213 | return error("EXTRACTVAL: Invalid type"); |
| 4214 | if ((unsigned)Index != Index) |
| 4215 | return error("Invalid value"); |
| 4216 | if (IsStruct && Index >= FullTy->getStructNumElements()) |
| 4217 | return error("EXTRACTVAL: Invalid struct index"); |
| 4218 | if (IsArray && Index >= FullTy->getArrayNumElements()) |
| 4219 | return error("EXTRACTVAL: Invalid array index"); |
| 4220 | EXTRACTVALIdx.push_back((unsigned)Index); |
| 4221 | |
| 4222 | if (IsStruct) |
| 4223 | FullTy = FullTy->getStructElementType(Index); |
| 4224 | else |
| 4225 | FullTy = FullTy->getArrayElementType(); |
| 4226 | } |
| 4227 | |
| 4228 | I = ExtractValueInst::Create(Agg, EXTRACTVALIdx); |
| 4229 | InstructionList.push_back(I); |
| 4230 | break; |
| 4231 | } |
| 4232 | |
| 4233 | case bitc::FUNC_CODE_INST_INSERTVAL: { |
| 4234 | // INSERTVAL: [opty, opval, opty, opval, n x indices] |
| 4235 | unsigned OpNum = 0; |
| 4236 | Value *Agg; |
| 4237 | if (getValueTypePair(Record, OpNum, NextValueNo, Agg, &FullTy)) |
| 4238 | return error("Invalid record"); |
| 4239 | Value *Val; |
| 4240 | if (getValueTypePair(Record, OpNum, NextValueNo, Val)) |
| 4241 | return error("Invalid record"); |
| 4242 | |
| 4243 | unsigned RecSize = Record.size(); |
| 4244 | if (OpNum == RecSize) |
| 4245 | return error("INSERTVAL: Invalid instruction with 0 indices"); |
| 4246 | |
| 4247 | SmallVector<unsigned, 4> INSERTVALIdx; |
| 4248 | Type *CurTy = Agg->getType(); |
| 4249 | for (; OpNum != RecSize; ++OpNum) { |
| 4250 | bool IsArray = CurTy->isArrayTy(); |
| 4251 | bool IsStruct = CurTy->isStructTy(); |
| 4252 | uint64_t Index = Record[OpNum]; |
| 4253 | |
| 4254 | if (!IsStruct && !IsArray) |
| 4255 | return error("INSERTVAL: Invalid type"); |
| 4256 | if ((unsigned)Index != Index) |
| 4257 | return error("Invalid value"); |
| 4258 | if (IsStruct && Index >= CurTy->getStructNumElements()) |
| 4259 | return error("INSERTVAL: Invalid struct index"); |
| 4260 | if (IsArray && Index >= CurTy->getArrayNumElements()) |
| 4261 | return error("INSERTVAL: Invalid array index"); |
| 4262 | |
| 4263 | INSERTVALIdx.push_back((unsigned)Index); |
| 4264 | if (IsStruct) |
| 4265 | CurTy = CurTy->getStructElementType(Index); |
| 4266 | else |
| 4267 | CurTy = CurTy->getArrayElementType(); |
| 4268 | } |
| 4269 | |
| 4270 | if (CurTy != Val->getType()) |
| 4271 | return error("Inserted value type doesn't match aggregate type"); |
| 4272 | |
| 4273 | I = InsertValueInst::Create(Agg, Val, INSERTVALIdx); |
| 4274 | InstructionList.push_back(I); |
| 4275 | break; |
| 4276 | } |
| 4277 | |
| 4278 | case bitc::FUNC_CODE_INST_SELECT: { // SELECT: [opval, ty, opval, opval] |
| 4279 | // obsolete form of select |
| 4280 | // handles select i1 ... in old bitcode |
| 4281 | unsigned OpNum = 0; |
| 4282 | Value *TrueVal, *FalseVal, *Cond; |
| 4283 | if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal, &FullTy) || |
| 4284 | popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) || |
| 4285 | popValue(Record, OpNum, NextValueNo, Type::getInt1Ty(Context), Cond)) |
| 4286 | return error("Invalid record"); |
| 4287 | |
| 4288 | I = SelectInst::Create(Cond, TrueVal, FalseVal); |
| 4289 | InstructionList.push_back(I); |
| 4290 | break; |
| 4291 | } |
| 4292 | |
| 4293 | case bitc::FUNC_CODE_INST_VSELECT: {// VSELECT: [ty,opval,opval,predty,pred] |
| 4294 | // new form of select |
| 4295 | // handles select i1 or select [N x i1] |
| 4296 | unsigned OpNum = 0; |
| 4297 | Value *TrueVal, *FalseVal, *Cond; |
| 4298 | if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal, &FullTy) || |
| 4299 | popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) || |
| 4300 | getValueTypePair(Record, OpNum, NextValueNo, Cond)) |
| 4301 | return error("Invalid record"); |
| 4302 | |
| 4303 | // select condition can be either i1 or [N x i1] |
| 4304 | if (VectorType* vector_type = |
| 4305 | dyn_cast<VectorType>(Cond->getType())) { |
| 4306 | // expect <n x i1> |
| 4307 | if (vector_type->getElementType() != Type::getInt1Ty(Context)) |
| 4308 | return error("Invalid type for value"); |
| 4309 | } else { |
| 4310 | // expect i1 |
| 4311 | if (Cond->getType() != Type::getInt1Ty(Context)) |
| 4312 | return error("Invalid type for value"); |
| 4313 | } |
| 4314 | |
| 4315 | I = SelectInst::Create(Cond, TrueVal, FalseVal); |
| 4316 | InstructionList.push_back(I); |
| 4317 | if (OpNum < Record.size() && isa<FPMathOperator>(I)) { |
| 4318 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); |
| 4319 | if (FMF.any()) |
| 4320 | I->setFastMathFlags(FMF); |
| 4321 | } |
| 4322 | break; |
| 4323 | } |
| 4324 | |
| 4325 | case bitc::FUNC_CODE_INST_EXTRACTELT: { // EXTRACTELT: [opty, opval, opval] |
| 4326 | unsigned OpNum = 0; |
| 4327 | Value *Vec, *Idx; |
| 4328 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec, &FullTy) || |
| 4329 | getValueTypePair(Record, OpNum, NextValueNo, Idx)) |
| 4330 | return error("Invalid record"); |
| 4331 | if (!Vec->getType()->isVectorTy()) |
| 4332 | return error("Invalid type for value"); |
| 4333 | I = ExtractElementInst::Create(Vec, Idx); |
| 4334 | FullTy = cast<VectorType>(FullTy)->getElementType(); |
| 4335 | InstructionList.push_back(I); |
| 4336 | break; |
| 4337 | } |
| 4338 | |
| 4339 | case bitc::FUNC_CODE_INST_INSERTELT: { // INSERTELT: [ty, opval,opval,opval] |
| 4340 | unsigned OpNum = 0; |
| 4341 | Value *Vec, *Elt, *Idx; |
| 4342 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec, &FullTy)) |
| 4343 | return error("Invalid record"); |
| 4344 | if (!Vec->getType()->isVectorTy()) |
| 4345 | return error("Invalid type for value"); |
| 4346 | if (popValue(Record, OpNum, NextValueNo, |
| 4347 | cast<VectorType>(Vec->getType())->getElementType(), Elt) || |
| 4348 | getValueTypePair(Record, OpNum, NextValueNo, Idx)) |
| 4349 | return error("Invalid record"); |
| 4350 | I = InsertElementInst::Create(Vec, Elt, Idx); |
| 4351 | InstructionList.push_back(I); |
| 4352 | break; |
| 4353 | } |
| 4354 | |
| 4355 | case bitc::FUNC_CODE_INST_SHUFFLEVEC: {// SHUFFLEVEC: [opval,ty,opval,opval] |
| 4356 | unsigned OpNum = 0; |
| 4357 | Value *Vec1, *Vec2, *Mask; |
| 4358 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec1, &FullTy) || |
| 4359 | popValue(Record, OpNum, NextValueNo, Vec1->getType(), Vec2)) |
| 4360 | return error("Invalid record"); |
| 4361 | |
| 4362 | if (getValueTypePair(Record, OpNum, NextValueNo, Mask)) |
| 4363 | return error("Invalid record"); |
| 4364 | if (!Vec1->getType()->isVectorTy() || !Vec2->getType()->isVectorTy()) |
| 4365 | return error("Invalid type for value"); |
| 4366 | |
| 4367 | I = new ShuffleVectorInst(Vec1, Vec2, Mask); |
| 4368 | FullTy = |
| 4369 | VectorType::get(cast<VectorType>(FullTy)->getElementType(), |
| 4370 | cast<VectorType>(Mask->getType())->getElementCount()); |
| 4371 | InstructionList.push_back(I); |
| 4372 | break; |
| 4373 | } |
| 4374 | |
| 4375 | case bitc::FUNC_CODE_INST_CMP: // CMP: [opty, opval, opval, pred] |
| 4376 | // Old form of ICmp/FCmp returning bool |
| 4377 | // Existed to differentiate between icmp/fcmp and vicmp/vfcmp which were |
| 4378 | // both legal on vectors but had different behaviour. |
| 4379 | case bitc::FUNC_CODE_INST_CMP2: { // CMP2: [opty, opval, opval, pred] |
| 4380 | // FCmp/ICmp returning bool or vector of bool |
| 4381 | |
| 4382 | unsigned OpNum = 0; |
| 4383 | Value *LHS, *RHS; |
| 4384 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || |
| 4385 | popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS)) |
| 4386 | return error("Invalid record"); |
| 4387 | |
| 4388 | if (OpNum >= Record.size()) |
| 4389 | return error( |
| 4390 | "Invalid record: operand number exceeded available operands"); |
| 4391 | |
| 4392 | unsigned PredVal = Record[OpNum]; |
| 4393 | bool IsFP = LHS->getType()->isFPOrFPVectorTy(); |
| 4394 | FastMathFlags FMF; |
| 4395 | if (IsFP && Record.size() > OpNum+1) |
| 4396 | FMF = getDecodedFastMathFlags(Record[++OpNum]); |
| 4397 | |
| 4398 | if (OpNum+1 != Record.size()) |
| 4399 | return error("Invalid record"); |
| 4400 | |
| 4401 | if (LHS->getType()->isFPOrFPVectorTy()) |
| 4402 | I = new FCmpInst((FCmpInst::Predicate)PredVal, LHS, RHS); |
| 4403 | else |
| 4404 | I = new ICmpInst((ICmpInst::Predicate)PredVal, LHS, RHS); |
| 4405 | |
| 4406 | if (FMF.any()) |
| 4407 | I->setFastMathFlags(FMF); |
| 4408 | InstructionList.push_back(I); |
| 4409 | break; |
| 4410 | } |
| 4411 | |
| 4412 | case bitc::FUNC_CODE_INST_RET: // RET: [opty,opval<optional>] |
| 4413 | { |
| 4414 | unsigned Size = Record.size(); |
| 4415 | if (Size == 0) { |
| 4416 | I = ReturnInst::Create(Context); |
| 4417 | InstructionList.push_back(I); |
| 4418 | break; |
| 4419 | } |
| 4420 | |
| 4421 | unsigned OpNum = 0; |
| 4422 | Value *Op = nullptr; |
| 4423 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) |
| 4424 | return error("Invalid record"); |
| 4425 | if (OpNum != Record.size()) |
| 4426 | return error("Invalid record"); |
| 4427 | |
| 4428 | I = ReturnInst::Create(Context, Op); |
| 4429 | InstructionList.push_back(I); |
| 4430 | break; |
| 4431 | } |
| 4432 | case bitc::FUNC_CODE_INST_BR: { // BR: [bb#, bb#, opval] or [bb#] |
| 4433 | if (Record.size() != 1 && Record.size() != 3) |
| 4434 | return error("Invalid record"); |
| 4435 | BasicBlock *TrueDest = getBasicBlock(Record[0]); |
| 4436 | if (!TrueDest) |
| 4437 | return error("Invalid record"); |
| 4438 | |
| 4439 | if (Record.size() == 1) { |
| 4440 | I = BranchInst::Create(TrueDest); |
| 4441 | InstructionList.push_back(I); |
| 4442 | } |
| 4443 | else { |
| 4444 | BasicBlock *FalseDest = getBasicBlock(Record[1]); |
| 4445 | Value *Cond = getValue(Record, 2, NextValueNo, |
| 4446 | Type::getInt1Ty(Context)); |
| 4447 | if (!FalseDest || !Cond) |
| 4448 | return error("Invalid record"); |
| 4449 | I = BranchInst::Create(TrueDest, FalseDest, Cond); |
| 4450 | InstructionList.push_back(I); |
| 4451 | } |
| 4452 | break; |
| 4453 | } |
| 4454 | case bitc::FUNC_CODE_INST_CLEANUPRET: { // CLEANUPRET: [val] or [val,bb#] |
| 4455 | if (Record.size() != 1 && Record.size() != 2) |
| 4456 | return error("Invalid record"); |
| 4457 | unsigned Idx = 0; |
| 4458 | Value *CleanupPad = |
| 4459 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); |
| 4460 | if (!CleanupPad) |
| 4461 | return error("Invalid record"); |
| 4462 | BasicBlock *UnwindDest = nullptr; |
| 4463 | if (Record.size() == 2) { |
| 4464 | UnwindDest = getBasicBlock(Record[Idx++]); |
| 4465 | if (!UnwindDest) |
| 4466 | return error("Invalid record"); |
| 4467 | } |
| 4468 | |
| 4469 | I = CleanupReturnInst::Create(CleanupPad, UnwindDest); |
| 4470 | InstructionList.push_back(I); |
| 4471 | break; |
| 4472 | } |
| 4473 | case bitc::FUNC_CODE_INST_CATCHRET: { // CATCHRET: [val,bb#] |
| 4474 | if (Record.size() != 2) |
| 4475 | return error("Invalid record"); |
| 4476 | unsigned Idx = 0; |
| 4477 | Value *CatchPad = |
| 4478 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); |
| 4479 | if (!CatchPad) |
| 4480 | return error("Invalid record"); |
| 4481 | BasicBlock *BB = getBasicBlock(Record[Idx++]); |
| 4482 | if (!BB) |
| 4483 | return error("Invalid record"); |
| 4484 | |
| 4485 | I = CatchReturnInst::Create(CatchPad, BB); |
| 4486 | InstructionList.push_back(I); |
| 4487 | break; |
| 4488 | } |
| 4489 | case bitc::FUNC_CODE_INST_CATCHSWITCH: { // CATCHSWITCH: [tok,num,(bb)*,bb?] |
| 4490 | // We must have, at minimum, the outer scope and the number of arguments. |
| 4491 | if (Record.size() < 2) |
| 4492 | return error("Invalid record"); |
| 4493 | |
| 4494 | unsigned Idx = 0; |
| 4495 | |
| 4496 | Value *ParentPad = |
| 4497 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); |
| 4498 | |
| 4499 | unsigned NumHandlers = Record[Idx++]; |
| 4500 | |
| 4501 | SmallVector<BasicBlock *, 2> Handlers; |
| 4502 | for (unsigned Op = 0; Op != NumHandlers; ++Op) { |
| 4503 | BasicBlock *BB = getBasicBlock(Record[Idx++]); |
| 4504 | if (!BB) |
| 4505 | return error("Invalid record"); |
| 4506 | Handlers.push_back(BB); |
| 4507 | } |
| 4508 | |
| 4509 | BasicBlock *UnwindDest = nullptr; |
| 4510 | if (Idx + 1 == Record.size()) { |
| 4511 | UnwindDest = getBasicBlock(Record[Idx++]); |
| 4512 | if (!UnwindDest) |
| 4513 | return error("Invalid record"); |
| 4514 | } |
| 4515 | |
| 4516 | if (Record.size() != Idx) |
| 4517 | return error("Invalid record"); |
| 4518 | |
| 4519 | auto *CatchSwitch = |
| 4520 | CatchSwitchInst::Create(ParentPad, UnwindDest, NumHandlers); |
| 4521 | for (BasicBlock *Handler : Handlers) |
| 4522 | CatchSwitch->addHandler(Handler); |
| 4523 | I = CatchSwitch; |
| 4524 | InstructionList.push_back(I); |
| 4525 | break; |
| 4526 | } |
| 4527 | case bitc::FUNC_CODE_INST_CATCHPAD: |
| 4528 | case bitc::FUNC_CODE_INST_CLEANUPPAD: { // [tok,num,(ty,val)*] |
| 4529 | // We must have, at minimum, the outer scope and the number of arguments. |
| 4530 | if (Record.size() < 2) |
| 4531 | return error("Invalid record"); |
| 4532 | |
| 4533 | unsigned Idx = 0; |
| 4534 | |
| 4535 | Value *ParentPad = |
| 4536 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); |
| 4537 | |
| 4538 | unsigned NumArgOperands = Record[Idx++]; |
| 4539 | |
| 4540 | SmallVector<Value *, 2> Args; |
| 4541 | for (unsigned Op = 0; Op != NumArgOperands; ++Op) { |
| 4542 | Value *Val; |
| 4543 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) |
| 4544 | return error("Invalid record"); |
| 4545 | Args.push_back(Val); |
| 4546 | } |
| 4547 | |
| 4548 | if (Record.size() != Idx) |
| 4549 | return error("Invalid record"); |
| 4550 | |
| 4551 | if (BitCode == bitc::FUNC_CODE_INST_CLEANUPPAD) |
| 4552 | I = CleanupPadInst::Create(ParentPad, Args); |
| 4553 | else |
| 4554 | I = CatchPadInst::Create(ParentPad, Args); |
| 4555 | InstructionList.push_back(I); |
| 4556 | break; |
| 4557 | } |
| 4558 | case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...] |
| 4559 | // Check magic |
| 4560 | if ((Record[0] >> 16) == SWITCH_INST_MAGIC) { |
| 4561 | // "New" SwitchInst format with case ranges. The changes to write this |
| 4562 | // format were reverted but we still recognize bitcode that uses it. |
| 4563 | // Hopefully someday we will have support for case ranges and can use |
| 4564 | // this format again. |
| 4565 | |
| 4566 | Type *OpTy = getTypeByID(Record[1]); |
| 4567 | unsigned ValueBitWidth = cast<IntegerType>(OpTy)->getBitWidth(); |
| 4568 | |
| 4569 | Value *Cond = getValue(Record, 2, NextValueNo, OpTy); |
| 4570 | BasicBlock *Default = getBasicBlock(Record[3]); |
| 4571 | if (!OpTy || !Cond || !Default) |
| 4572 | return error("Invalid record"); |
| 4573 | |
| 4574 | unsigned NumCases = Record[4]; |
| 4575 | |
| 4576 | SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases); |
| 4577 | InstructionList.push_back(SI); |
| 4578 | |
| 4579 | unsigned CurIdx = 5; |
| 4580 | for (unsigned i = 0; i != NumCases; ++i) { |
| 4581 | SmallVector<ConstantInt*, 1> CaseVals; |
| 4582 | unsigned NumItems = Record[CurIdx++]; |
| 4583 | for (unsigned ci = 0; ci != NumItems; ++ci) { |
| 4584 | bool isSingleNumber = Record[CurIdx++]; |
| 4585 | |
| 4586 | APInt Low; |
| 4587 | unsigned ActiveWords = 1; |
| 4588 | if (ValueBitWidth > 64) |
| 4589 | ActiveWords = Record[CurIdx++]; |
| 4590 | Low = readWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords), |
| 4591 | ValueBitWidth); |
| 4592 | CurIdx += ActiveWords; |
| 4593 | |
| 4594 | if (!isSingleNumber) { |
| 4595 | ActiveWords = 1; |
| 4596 | if (ValueBitWidth > 64) |
| 4597 | ActiveWords = Record[CurIdx++]; |
| 4598 | APInt High = readWideAPInt( |
| 4599 | makeArrayRef(&Record[CurIdx], ActiveWords), ValueBitWidth); |
| 4600 | CurIdx += ActiveWords; |
| 4601 | |
| 4602 | // FIXME: It is not clear whether values in the range should be |
| 4603 | // compared as signed or unsigned values. The partially |
| 4604 | // implemented changes that used this format in the past used |
| 4605 | // unsigned comparisons. |
| 4606 | for ( ; Low.ule(High); ++Low) |
| 4607 | CaseVals.push_back(ConstantInt::get(Context, Low)); |
| 4608 | } else |
| 4609 | CaseVals.push_back(ConstantInt::get(Context, Low)); |
| 4610 | } |
| 4611 | BasicBlock *DestBB = getBasicBlock(Record[CurIdx++]); |
| 4612 | for (SmallVector<ConstantInt*, 1>::iterator cvi = CaseVals.begin(), |
| 4613 | cve = CaseVals.end(); cvi != cve; ++cvi) |
| 4614 | SI->addCase(*cvi, DestBB); |
| 4615 | } |
| 4616 | I = SI; |
| 4617 | break; |
| 4618 | } |
| 4619 | |
| 4620 | // Old SwitchInst format without case ranges. |
| 4621 | |
| 4622 | if (Record.size() < 3 || (Record.size() & 1) == 0) |
| 4623 | return error("Invalid record"); |
| 4624 | Type *OpTy = getTypeByID(Record[0]); |
| 4625 | Value *Cond = getValue(Record, 1, NextValueNo, OpTy); |
| 4626 | BasicBlock *Default = getBasicBlock(Record[2]); |
| 4627 | if (!OpTy || !Cond || !Default) |
| 4628 | return error("Invalid record"); |
| 4629 | unsigned NumCases = (Record.size()-3)/2; |
| 4630 | SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases); |
| 4631 | InstructionList.push_back(SI); |
| 4632 | for (unsigned i = 0, e = NumCases; i != e; ++i) { |
| 4633 | ConstantInt *CaseVal = |
| 4634 | dyn_cast_or_null<ConstantInt>(getFnValueByID(Record[3+i*2], OpTy)); |
| 4635 | BasicBlock *DestBB = getBasicBlock(Record[1+3+i*2]); |
| 4636 | if (!CaseVal || !DestBB) { |
| 4637 | delete SI; |
| 4638 | return error("Invalid record"); |
| 4639 | } |
| 4640 | SI->addCase(CaseVal, DestBB); |
| 4641 | } |
| 4642 | I = SI; |
| 4643 | break; |
| 4644 | } |
| 4645 | case bitc::FUNC_CODE_INST_INDIRECTBR: { // INDIRECTBR: [opty, op0, op1, ...] |
| 4646 | if (Record.size() < 2) |
| 4647 | return error("Invalid record"); |
| 4648 | Type *OpTy = getTypeByID(Record[0]); |
| 4649 | Value *Address = getValue(Record, 1, NextValueNo, OpTy); |
| 4650 | if (!OpTy || !Address) |
| 4651 | return error("Invalid record"); |
| 4652 | unsigned NumDests = Record.size()-2; |
| 4653 | IndirectBrInst *IBI = IndirectBrInst::Create(Address, NumDests); |
| 4654 | InstructionList.push_back(IBI); |
| 4655 | for (unsigned i = 0, e = NumDests; i != e; ++i) { |
| 4656 | if (BasicBlock *DestBB = getBasicBlock(Record[2+i])) { |
| 4657 | IBI->addDestination(DestBB); |
| 4658 | } else { |
| 4659 | delete IBI; |
| 4660 | return error("Invalid record"); |
| 4661 | } |
| 4662 | } |
| 4663 | I = IBI; |
| 4664 | break; |
| 4665 | } |
| 4666 | |
| 4667 | case bitc::FUNC_CODE_INST_INVOKE: { |
| 4668 | // INVOKE: [attrs, cc, normBB, unwindBB, fnty, op0,op1,op2, ...] |
| 4669 | if (Record.size() < 4) |
| 4670 | return error("Invalid record"); |
| 4671 | unsigned OpNum = 0; |
| 4672 | AttributeList PAL = getAttributes(Record[OpNum++]); |
| 4673 | unsigned CCInfo = Record[OpNum++]; |
| 4674 | BasicBlock *NormalBB = getBasicBlock(Record[OpNum++]); |
| 4675 | BasicBlock *UnwindBB = getBasicBlock(Record[OpNum++]); |
| 4676 | |
| 4677 | FunctionType *FTy = nullptr; |
| 4678 | FunctionType *FullFTy = nullptr; |
| 4679 | if ((CCInfo >> 13) & 1) { |
| 4680 | FullFTy = |
| 4681 | dyn_cast<FunctionType>(getFullyStructuredTypeByID(Record[OpNum++])); |
| 4682 | if (!FullFTy) |
| 4683 | return error("Explicit invoke type is not a function type"); |
| 4684 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); |
| 4685 | } |
| 4686 | |
| 4687 | Value *Callee; |
| 4688 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee, &FullTy)) |
| 4689 | return error("Invalid record"); |
| 4690 | |
| 4691 | PointerType *CalleeTy = dyn_cast<PointerType>(Callee->getType()); |
| 4692 | if (!CalleeTy) |
| 4693 | return error("Callee is not a pointer"); |
| 4694 | if (!FTy) { |
| 4695 | FullFTy = |
| 4696 | dyn_cast<FunctionType>(cast<PointerType>(FullTy)->getElementType()); |
| 4697 | if (!FullFTy) |
| 4698 | return error("Callee is not of pointer to function type"); |
| 4699 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); |
| 4700 | } else if (getPointerElementFlatType(FullTy) != FTy) |
| 4701 | return error("Explicit invoke type does not match pointee type of " |
| 4702 | "callee operand"); |
| 4703 | if (Record.size() < FTy->getNumParams() + OpNum) |
| 4704 | return error("Insufficient operands to call"); |
| 4705 | |
| 4706 | SmallVector<Value*, 16> Ops; |
| 4707 | SmallVector<Type *, 16> ArgsFullTys; |
| 4708 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { |
| 4709 | Ops.push_back(getValue(Record, OpNum, NextValueNo, |
| 4710 | FTy->getParamType(i))); |
| 4711 | ArgsFullTys.push_back(FullFTy->getParamType(i)); |
| 4712 | if (!Ops.back()) |
| 4713 | return error("Invalid record"); |
| 4714 | } |
| 4715 | |
| 4716 | if (!FTy->isVarArg()) { |
| 4717 | if (Record.size() != OpNum) |
| 4718 | return error("Invalid record"); |
| 4719 | } else { |
| 4720 | // Read type/value pairs for varargs params. |
| 4721 | while (OpNum != Record.size()) { |
| 4722 | Value *Op; |
| 4723 | Type *FullTy; |
| 4724 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy)) |
| 4725 | return error("Invalid record"); |
| 4726 | Ops.push_back(Op); |
| 4727 | ArgsFullTys.push_back(FullTy); |
| 4728 | } |
| 4729 | } |
| 4730 | |
| 4731 | I = InvokeInst::Create(FTy, Callee, NormalBB, UnwindBB, Ops, |
| 4732 | OperandBundles); |
| 4733 | FullTy = FullFTy->getReturnType(); |
| 4734 | OperandBundles.clear(); |
| 4735 | InstructionList.push_back(I); |
| 4736 | cast<InvokeInst>(I)->setCallingConv( |
| 4737 | static_cast<CallingConv::ID>(CallingConv::MaxID & CCInfo)); |
| 4738 | cast<InvokeInst>(I)->setAttributes(PAL); |
| 4739 | propagateByValSRetTypes(cast<CallBase>(I), ArgsFullTys); |
| 4740 | |
| 4741 | break; |
| 4742 | } |
| 4743 | case bitc::FUNC_CODE_INST_RESUME: { // RESUME: [opval] |
| 4744 | unsigned Idx = 0; |
| 4745 | Value *Val = nullptr; |
| 4746 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) |
| 4747 | return error("Invalid record"); |
| 4748 | I = ResumeInst::Create(Val); |
| 4749 | InstructionList.push_back(I); |
| 4750 | break; |
| 4751 | } |
| 4752 | case bitc::FUNC_CODE_INST_CALLBR: { |
| 4753 | // CALLBR: [attr, cc, norm, transfs, fty, fnid, args] |
| 4754 | unsigned OpNum = 0; |
| 4755 | AttributeList PAL = getAttributes(Record[OpNum++]); |
| 4756 | unsigned CCInfo = Record[OpNum++]; |
| 4757 | |
| 4758 | BasicBlock *DefaultDest = getBasicBlock(Record[OpNum++]); |
| 4759 | unsigned NumIndirectDests = Record[OpNum++]; |
| 4760 | SmallVector<BasicBlock *, 16> IndirectDests; |
| 4761 | for (unsigned i = 0, e = NumIndirectDests; i != e; ++i) |
| 4762 | IndirectDests.push_back(getBasicBlock(Record[OpNum++])); |
| 4763 | |
| 4764 | FunctionType *FTy = nullptr; |
| 4765 | FunctionType *FullFTy = nullptr; |
| 4766 | if ((CCInfo >> bitc::CALL_EXPLICIT_TYPE) & 1) { |
| 4767 | FullFTy = |
| 4768 | dyn_cast<FunctionType>(getFullyStructuredTypeByID(Record[OpNum++])); |
| 4769 | if (!FullFTy) |
| 4770 | return error("Explicit call type is not a function type"); |
| 4771 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); |
| 4772 | } |
| 4773 | |
| 4774 | Value *Callee; |
| 4775 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee, &FullTy)) |
| 4776 | return error("Invalid record"); |
| 4777 | |
| 4778 | PointerType *OpTy = dyn_cast<PointerType>(Callee->getType()); |
| 4779 | if (!OpTy) |
| 4780 | return error("Callee is not a pointer type"); |
| 4781 | if (!FTy) { |
| 4782 | FullFTy = |
| 4783 | dyn_cast<FunctionType>(cast<PointerType>(FullTy)->getElementType()); |
| 4784 | if (!FullFTy) |
| 4785 | return error("Callee is not of pointer to function type"); |
| 4786 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); |
| 4787 | } else if (getPointerElementFlatType(FullTy) != FTy) |
| 4788 | return error("Explicit call type does not match pointee type of " |
| 4789 | "callee operand"); |
| 4790 | if (Record.size() < FTy->getNumParams() + OpNum) |
| 4791 | return error("Insufficient operands to call"); |
| 4792 | |
| 4793 | SmallVector<Value*, 16> Args; |
| 4794 | // Read the fixed params. |
| 4795 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { |
| 4796 | if (FTy->getParamType(i)->isLabelTy()) |
| 4797 | Args.push_back(getBasicBlock(Record[OpNum])); |
| 4798 | else |
| 4799 | Args.push_back(getValue(Record, OpNum, NextValueNo, |
| 4800 | FTy->getParamType(i))); |
| 4801 | if (!Args.back()) |
| 4802 | return error("Invalid record"); |
| 4803 | } |
| 4804 | |
| 4805 | // Read type/value pairs for varargs params. |
| 4806 | if (!FTy->isVarArg()) { |
| 4807 | if (OpNum != Record.size()) |
| 4808 | return error("Invalid record"); |
| 4809 | } else { |
| 4810 | while (OpNum != Record.size()) { |
| 4811 | Value *Op; |
| 4812 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) |
| 4813 | return error("Invalid record"); |
| 4814 | Args.push_back(Op); |
| 4815 | } |
| 4816 | } |
| 4817 | |
| 4818 | I = CallBrInst::Create(FTy, Callee, DefaultDest, IndirectDests, Args, |
| 4819 | OperandBundles); |
| 4820 | FullTy = FullFTy->getReturnType(); |
| 4821 | OperandBundles.clear(); |
| 4822 | InstructionList.push_back(I); |
| 4823 | cast<CallBrInst>(I)->setCallingConv( |
| 4824 | static_cast<CallingConv::ID>((0x7ff & CCInfo) >> bitc::CALL_CCONV)); |
| 4825 | cast<CallBrInst>(I)->setAttributes(PAL); |
| 4826 | break; |
| 4827 | } |
| 4828 | case bitc::FUNC_CODE_INST_UNREACHABLE: // UNREACHABLE |
| 4829 | I = new UnreachableInst(Context); |
| 4830 | InstructionList.push_back(I); |
| 4831 | break; |
| 4832 | case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, val0,bb0, ...] |
| 4833 | if (Record.empty()) |
| 4834 | return error("Invalid record"); |
| 4835 | // The first record specifies the type. |
| 4836 | FullTy = getFullyStructuredTypeByID(Record[0]); |
| 4837 | Type *Ty = flattenPointerTypes(FullTy); |
| 4838 | if (!Ty) |
| 4839 | return error("Invalid record"); |
| 4840 | |
| 4841 | // Phi arguments are pairs of records of [value, basic block]. |
| 4842 | // There is an optional final record for fast-math-flags if this phi has a |
| 4843 | // floating-point type. |
| 4844 | size_t NumArgs = (Record.size() - 1) / 2; |
| 4845 | PHINode *PN = PHINode::Create(Ty, NumArgs); |
| 4846 | if ((Record.size() - 1) % 2 == 1 && !isa<FPMathOperator>(PN)) |
| 4847 | return error("Invalid record"); |
| 4848 | InstructionList.push_back(PN); |
| 4849 | |
| 4850 | for (unsigned i = 0; i != NumArgs; i++) { |
| 4851 | Value *V; |
| 4852 | // With the new function encoding, it is possible that operands have |
| 4853 | // negative IDs (for forward references). Use a signed VBR |
| 4854 | // representation to keep the encoding small. |
| 4855 | if (UseRelativeIDs) |
| 4856 | V = getValueSigned(Record, i * 2 + 1, NextValueNo, Ty); |
| 4857 | else |
| 4858 | V = getValue(Record, i * 2 + 1, NextValueNo, Ty); |
| 4859 | BasicBlock *BB = getBasicBlock(Record[i * 2 + 2]); |
| 4860 | if (!V || !BB) |
| 4861 | return error("Invalid record"); |
| 4862 | PN->addIncoming(V, BB); |
| 4863 | } |
| 4864 | I = PN; |
| 4865 | |
| 4866 | // If there are an even number of records, the final record must be FMF. |
| 4867 | if (Record.size() % 2 == 0) { |
| 4868 | assert(isa<FPMathOperator>(I) && "Unexpected phi type")(static_cast <bool> (isa<FPMathOperator>(I) && "Unexpected phi type") ? void (0) : __assert_fail ("isa<FPMathOperator>(I) && \"Unexpected phi type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4868, __extension__ __PRETTY_FUNCTION__)); |
| 4869 | FastMathFlags FMF = getDecodedFastMathFlags(Record[Record.size() - 1]); |
| 4870 | if (FMF.any()) |
| 4871 | I->setFastMathFlags(FMF); |
| 4872 | } |
| 4873 | |
| 4874 | break; |
| 4875 | } |
| 4876 | |
| 4877 | case bitc::FUNC_CODE_INST_LANDINGPAD: |
| 4878 | case bitc::FUNC_CODE_INST_LANDINGPAD_OLD: { |
| 4879 | // LANDINGPAD: [ty, val, val, num, (id0,val0 ...)?] |
| 4880 | unsigned Idx = 0; |
| 4881 | if (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD) { |
| 4882 | if (Record.size() < 3) |
| 4883 | return error("Invalid record"); |
| 4884 | } else { |
| 4885 | assert(BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD)(static_cast <bool> (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD ) ? void (0) : __assert_fail ("BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4885, __extension__ __PRETTY_FUNCTION__)); |
| 4886 | if (Record.size() < 4) |
| 4887 | return error("Invalid record"); |
| 4888 | } |
| 4889 | FullTy = getFullyStructuredTypeByID(Record[Idx++]); |
| 4890 | Type *Ty = flattenPointerTypes(FullTy); |
| 4891 | if (!Ty) |
| 4892 | return error("Invalid record"); |
| 4893 | if (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD) { |
| 4894 | Value *PersFn = nullptr; |
| 4895 | if (getValueTypePair(Record, Idx, NextValueNo, PersFn)) |
| 4896 | return error("Invalid record"); |
| 4897 | |
| 4898 | if (!F->hasPersonalityFn()) |
| 4899 | F->setPersonalityFn(cast<Constant>(PersFn)); |
| 4900 | else if (F->getPersonalityFn() != cast<Constant>(PersFn)) |
| 4901 | return error("Personality function mismatch"); |
| 4902 | } |
| 4903 | |
| 4904 | bool IsCleanup = !!Record[Idx++]; |
| 4905 | unsigned NumClauses = Record[Idx++]; |
| 4906 | LandingPadInst *LP = LandingPadInst::Create(Ty, NumClauses); |
| 4907 | LP->setCleanup(IsCleanup); |
| 4908 | for (unsigned J = 0; J != NumClauses; ++J) { |
| 4909 | LandingPadInst::ClauseType CT = |
| 4910 | LandingPadInst::ClauseType(Record[Idx++]); (void)CT; |
| 4911 | Value *Val; |
| 4912 | |
| 4913 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) { |
| 4914 | delete LP; |
| 4915 | return error("Invalid record"); |
| 4916 | } |
| 4917 | |
| 4918 | assert((CT != LandingPadInst::Catch ||(static_cast <bool> ((CT != LandingPadInst::Catch || !isa <ArrayType>(Val->getType())) && "Catch clause has a invalid type!" ) ? void (0) : __assert_fail ("(CT != LandingPadInst::Catch || !isa<ArrayType>(Val->getType())) && \"Catch clause has a invalid type!\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4920, __extension__ __PRETTY_FUNCTION__)) |
| 4919 | !isa<ArrayType>(Val->getType())) &&(static_cast <bool> ((CT != LandingPadInst::Catch || !isa <ArrayType>(Val->getType())) && "Catch clause has a invalid type!" ) ? void (0) : __assert_fail ("(CT != LandingPadInst::Catch || !isa<ArrayType>(Val->getType())) && \"Catch clause has a invalid type!\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4920, __extension__ __PRETTY_FUNCTION__)) |
| 4920 | "Catch clause has a invalid type!")(static_cast <bool> ((CT != LandingPadInst::Catch || !isa <ArrayType>(Val->getType())) && "Catch clause has a invalid type!" ) ? void (0) : __assert_fail ("(CT != LandingPadInst::Catch || !isa<ArrayType>(Val->getType())) && \"Catch clause has a invalid type!\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4920, __extension__ __PRETTY_FUNCTION__)); |
| 4921 | assert((CT != LandingPadInst::Filter ||(static_cast <bool> ((CT != LandingPadInst::Filter || isa <ArrayType>(Val->getType())) && "Filter clause has invalid type!" ) ? void (0) : __assert_fail ("(CT != LandingPadInst::Filter || isa<ArrayType>(Val->getType())) && \"Filter clause has invalid type!\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4923, __extension__ __PRETTY_FUNCTION__)) |
| 4922 | isa<ArrayType>(Val->getType())) &&(static_cast <bool> ((CT != LandingPadInst::Filter || isa <ArrayType>(Val->getType())) && "Filter clause has invalid type!" ) ? void (0) : __assert_fail ("(CT != LandingPadInst::Filter || isa<ArrayType>(Val->getType())) && \"Filter clause has invalid type!\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4923, __extension__ __PRETTY_FUNCTION__)) |
| 4923 | "Filter clause has invalid type!")(static_cast <bool> ((CT != LandingPadInst::Filter || isa <ArrayType>(Val->getType())) && "Filter clause has invalid type!" ) ? void (0) : __assert_fail ("(CT != LandingPadInst::Filter || isa<ArrayType>(Val->getType())) && \"Filter clause has invalid type!\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4923, __extension__ __PRETTY_FUNCTION__)); |
| 4924 | LP->addClause(cast<Constant>(Val)); |
| 4925 | } |
| 4926 | |
| 4927 | I = LP; |
| 4928 | InstructionList.push_back(I); |
| 4929 | break; |
| 4930 | } |
| 4931 | |
| 4932 | case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align] |
| 4933 | if (Record.size() != 4) |
| 4934 | return error("Invalid record"); |
| 4935 | using APV = AllocaPackedValues; |
| 4936 | const uint64_t Rec = Record[3]; |
| 4937 | const bool InAlloca = Bitfield::get<APV::UsedWithInAlloca>(Rec); |
| 4938 | const bool SwiftError = Bitfield::get<APV::SwiftError>(Rec); |
| 4939 | FullTy = getFullyStructuredTypeByID(Record[0]); |
| 4940 | Type *Ty = flattenPointerTypes(FullTy); |
| 4941 | if (!Bitfield::get<APV::ExplicitType>(Rec)) { |
| 4942 | auto *PTy = dyn_cast_or_null<PointerType>(Ty); |
| 4943 | if (!PTy) |
| 4944 | return error("Old-style alloca with a non-pointer type"); |
| 4945 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); |
| 4946 | } |
| 4947 | Type *OpTy = getTypeByID(Record[1]); |
| 4948 | Value *Size = getFnValueByID(Record[2], OpTy); |
| 4949 | MaybeAlign Align; |
| 4950 | if (Error Err = |
| 4951 | parseAlignmentValue(Bitfield::get<APV::Align>(Rec), Align)) { |
| 4952 | return Err; |
| 4953 | } |
| 4954 | if (!Ty || !Size) |
| 4955 | return error("Invalid record"); |
| 4956 | |
| 4957 | // FIXME: Make this an optional field. |
| 4958 | const DataLayout &DL = TheModule->getDataLayout(); |
| 4959 | unsigned AS = DL.getAllocaAddrSpace(); |
| 4960 | |
| 4961 | SmallPtrSet<Type *, 4> Visited; |
| 4962 | if (!Align && !Ty->isSized(&Visited)) |
| 4963 | return error("alloca of unsized type"); |
| 4964 | if (!Align) |
| 4965 | Align = DL.getPrefTypeAlign(Ty); |
| 4966 | |
| 4967 | AllocaInst *AI = new AllocaInst(Ty, AS, Size, *Align); |
| 4968 | AI->setUsedWithInAlloca(InAlloca); |
| 4969 | AI->setSwiftError(SwiftError); |
| 4970 | I = AI; |
| 4971 | FullTy = PointerType::get(FullTy, AS); |
| 4972 | InstructionList.push_back(I); |
| 4973 | break; |
| 4974 | } |
| 4975 | case bitc::FUNC_CODE_INST_LOAD: { // LOAD: [opty, op, align, vol] |
| 4976 | unsigned OpNum = 0; |
| 4977 | Value *Op; |
| 4978 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy) || |
| 4979 | (OpNum + 2 != Record.size() && OpNum + 3 != Record.size())) |
| 4980 | return error("Invalid record"); |
| 4981 | |
| 4982 | if (!isa<PointerType>(Op->getType())) |
| 4983 | return error("Load operand is not a pointer type"); |
| 4984 | |
| 4985 | Type *Ty = nullptr; |
| 4986 | if (OpNum + 3 == Record.size()) { |
| 4987 | FullTy = getFullyStructuredTypeByID(Record[OpNum++]); |
| 4988 | Ty = flattenPointerTypes(FullTy); |
| 4989 | } else |
| 4990 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); |
| 4991 | |
| 4992 | if (Error Err = typeCheckLoadStoreInst(Ty, Op->getType())) |
| 4993 | return Err; |
| 4994 | |
| 4995 | MaybeAlign Align; |
| 4996 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) |
| 4997 | return Err; |
| 4998 | SmallPtrSet<Type *, 4> Visited; |
| 4999 | if (!Align && !Ty->isSized(&Visited)) |
| 5000 | return error("load of unsized type"); |
| 5001 | if (!Align) |
| 5002 | Align = TheModule->getDataLayout().getABITypeAlign(Ty); |
| 5003 | I = new LoadInst(Ty, Op, "", Record[OpNum + 1], *Align); |
| 5004 | InstructionList.push_back(I); |
| 5005 | break; |
| 5006 | } |
| 5007 | case bitc::FUNC_CODE_INST_LOADATOMIC: { |
| 5008 | // LOADATOMIC: [opty, op, align, vol, ordering, ssid] |
| 5009 | unsigned OpNum = 0; |
| 5010 | Value *Op; |
| 5011 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy) || |
| 5012 | (OpNum + 4 != Record.size() && OpNum + 5 != Record.size())) |
| 5013 | return error("Invalid record"); |
| 5014 | |
| 5015 | if (!isa<PointerType>(Op->getType())) |
| 5016 | return error("Load operand is not a pointer type"); |
| 5017 | |
| 5018 | Type *Ty = nullptr; |
| 5019 | if (OpNum + 5 == Record.size()) { |
| 5020 | FullTy = getFullyStructuredTypeByID(Record[OpNum++]); |
| 5021 | Ty = flattenPointerTypes(FullTy); |
| 5022 | } else |
| 5023 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); |
| 5024 | |
| 5025 | if (Error Err = typeCheckLoadStoreInst(Ty, Op->getType())) |
| 5026 | return Err; |
| 5027 | |
| 5028 | AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); |
| 5029 | if (Ordering == AtomicOrdering::NotAtomic || |
| 5030 | Ordering == AtomicOrdering::Release || |
| 5031 | Ordering == AtomicOrdering::AcquireRelease) |
| 5032 | return error("Invalid record"); |
| 5033 | if (Ordering != AtomicOrdering::NotAtomic && Record[OpNum] == 0) |
| 5034 | return error("Invalid record"); |
| 5035 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); |
| 5036 | |
| 5037 | MaybeAlign Align; |
| 5038 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) |
| 5039 | return Err; |
| 5040 | if (!Align) |
| 5041 | return error("Alignment missing from atomic load"); |
| 5042 | I = new LoadInst(Ty, Op, "", Record[OpNum + 1], *Align, Ordering, SSID); |
| 5043 | InstructionList.push_back(I); |
| 5044 | break; |
| 5045 | } |
| 5046 | case bitc::FUNC_CODE_INST_STORE: |
| 5047 | case bitc::FUNC_CODE_INST_STORE_OLD: { // STORE2:[ptrty, ptr, val, align, vol] |
| 5048 | unsigned OpNum = 0; |
| 5049 | Value *Val, *Ptr; |
| 5050 | Type *FullTy; |
| 5051 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy) || |
| 5052 | (BitCode == bitc::FUNC_CODE_INST_STORE |
| 5053 | ? getValueTypePair(Record, OpNum, NextValueNo, Val) |
| 5054 | : popValue(Record, OpNum, NextValueNo, |
| 5055 | getPointerElementFlatType(FullTy), Val)) || |
| 5056 | OpNum + 2 != Record.size()) |
| 5057 | return error("Invalid record"); |
| 5058 | |
| 5059 | if (Error Err = typeCheckLoadStoreInst(Val->getType(), Ptr->getType())) |
| 5060 | return Err; |
| 5061 | MaybeAlign Align; |
| 5062 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) |
| 5063 | return Err; |
| 5064 | SmallPtrSet<Type *, 4> Visited; |
| 5065 | if (!Align && !Val->getType()->isSized(&Visited)) |
| 5066 | return error("store of unsized type"); |
| 5067 | if (!Align) |
| 5068 | Align = TheModule->getDataLayout().getABITypeAlign(Val->getType()); |
| 5069 | I = new StoreInst(Val, Ptr, Record[OpNum + 1], *Align); |
| 5070 | InstructionList.push_back(I); |
| 5071 | break; |
| 5072 | } |
| 5073 | case bitc::FUNC_CODE_INST_STOREATOMIC: |
| 5074 | case bitc::FUNC_CODE_INST_STOREATOMIC_OLD: { |
| 5075 | // STOREATOMIC: [ptrty, ptr, val, align, vol, ordering, ssid] |
| 5076 | unsigned OpNum = 0; |
| 5077 | Value *Val, *Ptr; |
| 5078 | Type *FullTy; |
| 5079 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy) || |
| 5080 | !isa<PointerType>(Ptr->getType()) || |
| 5081 | (BitCode == bitc::FUNC_CODE_INST_STOREATOMIC |
| 5082 | ? getValueTypePair(Record, OpNum, NextValueNo, Val) |
| 5083 | : popValue(Record, OpNum, NextValueNo, |
| 5084 | getPointerElementFlatType(FullTy), Val)) || |
| 5085 | OpNum + 4 != Record.size()) |
| 5086 | return error("Invalid record"); |
| 5087 | |
| 5088 | if (Error Err = typeCheckLoadStoreInst(Val->getType(), Ptr->getType())) |
| 5089 | return Err; |
| 5090 | AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); |
| 5091 | if (Ordering == AtomicOrdering::NotAtomic || |
| 5092 | Ordering == AtomicOrdering::Acquire || |
| 5093 | Ordering == AtomicOrdering::AcquireRelease) |
| 5094 | return error("Invalid record"); |
| 5095 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); |
| 5096 | if (Ordering != AtomicOrdering::NotAtomic && Record[OpNum] == 0) |
| 5097 | return error("Invalid record"); |
| 5098 | |
| 5099 | MaybeAlign Align; |
| 5100 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) |
| 5101 | return Err; |
| 5102 | if (!Align) |
| 5103 | return error("Alignment missing from atomic store"); |
| 5104 | I = new StoreInst(Val, Ptr, Record[OpNum + 1], *Align, Ordering, SSID); |
| 5105 | InstructionList.push_back(I); |
| 5106 | break; |
| 5107 | } |
| 5108 | case bitc::FUNC_CODE_INST_CMPXCHG_OLD: { |
| 5109 | // CMPXCHG_OLD: [ptrty, ptr, cmp, val, vol, ordering, synchscope, |
| 5110 | // failure_ordering?, weak?] |
| 5111 | const size_t NumRecords = Record.size(); |
| 5112 | unsigned OpNum = 0; |
| 5113 | Value *Ptr = nullptr; |
| 5114 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy)) |
| 5115 | return error("Invalid record"); |
| 5116 | |
| 5117 | if (!isa<PointerType>(Ptr->getType())) |
| 5118 | return error("Cmpxchg operand is not a pointer type"); |
| 5119 | |
| 5120 | Value *Cmp = nullptr; |
| 5121 | if (popValue(Record, OpNum, NextValueNo, |
| 5122 | getPointerElementFlatType(FullTy), Cmp)) |
| 5123 | return error("Invalid record"); |
| 5124 | |
| 5125 | FullTy = cast<PointerType>(FullTy)->getElementType(); |
| 5126 | |
| 5127 | Value *New = nullptr; |
| 5128 | if (popValue(Record, OpNum, NextValueNo, Cmp->getType(), New) || |
| 5129 | NumRecords < OpNum + 3 || NumRecords > OpNum + 5) |
| 5130 | return error("Invalid record"); |
| 5131 | |
| 5132 | const AtomicOrdering SuccessOrdering = |
| 5133 | getDecodedOrdering(Record[OpNum + 1]); |
| 5134 | if (SuccessOrdering == AtomicOrdering::NotAtomic || |
| 5135 | SuccessOrdering == AtomicOrdering::Unordered) |
| 5136 | return error("Invalid record"); |
| 5137 | |
| 5138 | const SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 2]); |
| 5139 | |
| 5140 | if (Error Err = typeCheckLoadStoreInst(Cmp->getType(), Ptr->getType())) |
| 5141 | return Err; |
| 5142 | |
| 5143 | const AtomicOrdering FailureOrdering = |
| 5144 | NumRecords < 7 |
| 5145 | ? AtomicCmpXchgInst::getStrongestFailureOrdering(SuccessOrdering) |
| 5146 | : getDecodedOrdering(Record[OpNum + 3]); |
| 5147 | |
| 5148 | if (FailureOrdering == AtomicOrdering::NotAtomic || |
| 5149 | FailureOrdering == AtomicOrdering::Unordered) |
| 5150 | return error("Invalid record"); |
| 5151 | |
| 5152 | const Align Alignment( |
| 5153 | TheModule->getDataLayout().getTypeStoreSize(Cmp->getType())); |
| 5154 | |
| 5155 | I = new AtomicCmpXchgInst(Ptr, Cmp, New, Alignment, SuccessOrdering, |
| 5156 | FailureOrdering, SSID); |
| 5157 | cast<AtomicCmpXchgInst>(I)->setVolatile(Record[OpNum]); |
| 5158 | FullTy = StructType::get(Context, {FullTy, Type::getInt1Ty(Context)}); |
| 5159 | |
| 5160 | if (NumRecords < 8) { |
| 5161 | // Before weak cmpxchgs existed, the instruction simply returned the |
| 5162 | // value loaded from memory, so bitcode files from that era will be |
| 5163 | // expecting the first component of a modern cmpxchg. |
| 5164 | CurBB->getInstList().push_back(I); |
| 5165 | I = ExtractValueInst::Create(I, 0); |
| 5166 | FullTy = cast<StructType>(FullTy)->getElementType(0); |
| 5167 | } else { |
| 5168 | cast<AtomicCmpXchgInst>(I)->setWeak(Record[OpNum + 4]); |
| 5169 | } |
| 5170 | |
| 5171 | InstructionList.push_back(I); |
| 5172 | break; |
| 5173 | } |
| 5174 | case bitc::FUNC_CODE_INST_CMPXCHG: { |
| 5175 | // CMPXCHG: [ptrty, ptr, cmp, val, vol, success_ordering, synchscope, |
| 5176 | // failure_ordering, weak, align?] |
| 5177 | const size_t NumRecords = Record.size(); |
| 5178 | unsigned OpNum = 0; |
| 5179 | Value *Ptr = nullptr; |
| 5180 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy)) |
| 5181 | return error("Invalid record"); |
| 5182 | |
| 5183 | if (!isa<PointerType>(Ptr->getType())) |
| 5184 | return error("Cmpxchg operand is not a pointer type"); |
| 5185 | |
| 5186 | Value *Cmp = nullptr; |
| 5187 | if (getValueTypePair(Record, OpNum, NextValueNo, Cmp, &FullTy)) |
| 5188 | return error("Invalid record"); |
| 5189 | |
| 5190 | Value *Val = nullptr; |
| 5191 | if (popValue(Record, OpNum, NextValueNo, Cmp->getType(), Val)) |
| 5192 | return error("Invalid record"); |
| 5193 | |
| 5194 | if (NumRecords < OpNum + 3 || NumRecords > OpNum + 6) |
| 5195 | return error("Invalid record"); |
| 5196 | |
| 5197 | const bool IsVol = Record[OpNum]; |
| 5198 | |
| 5199 | const AtomicOrdering SuccessOrdering = |
| 5200 | getDecodedOrdering(Record[OpNum + 1]); |
| 5201 | if (!AtomicCmpXchgInst::isValidSuccessOrdering(SuccessOrdering)) |
| 5202 | return error("Invalid cmpxchg success ordering"); |
| 5203 | |
| 5204 | const SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 2]); |
| 5205 | |
| 5206 | if (Error Err = typeCheckLoadStoreInst(Cmp->getType(), Ptr->getType())) |
| 5207 | return Err; |
| 5208 | |
| 5209 | const AtomicOrdering FailureOrdering = |
| 5210 | getDecodedOrdering(Record[OpNum + 3]); |
| 5211 | if (!AtomicCmpXchgInst::isValidFailureOrdering(FailureOrdering)) |
| 5212 | return error("Invalid cmpxchg failure ordering"); |
| 5213 | |
| 5214 | const bool IsWeak = Record[OpNum + 4]; |
| 5215 | |
| 5216 | MaybeAlign Alignment; |
| 5217 | |
| 5218 | if (NumRecords == (OpNum + 6)) { |
| 5219 | if (Error Err = parseAlignmentValue(Record[OpNum + 5], Alignment)) |
| 5220 | return Err; |
| 5221 | } |
| 5222 | if (!Alignment) |
| 5223 | Alignment = |
| 5224 | Align(TheModule->getDataLayout().getTypeStoreSize(Cmp->getType())); |
| 5225 | |
| 5226 | I = new AtomicCmpXchgInst(Ptr, Cmp, Val, *Alignment, SuccessOrdering, |
| 5227 | FailureOrdering, SSID); |
| 5228 | FullTy = StructType::get(Context, {FullTy, Type::getInt1Ty(Context)}); |
| 5229 | cast<AtomicCmpXchgInst>(I)->setVolatile(IsVol); |
| 5230 | cast<AtomicCmpXchgInst>(I)->setWeak(IsWeak); |
| 5231 | |
| 5232 | InstructionList.push_back(I); |
| 5233 | break; |
| 5234 | } |
| 5235 | case bitc::FUNC_CODE_INST_ATOMICRMW_OLD: |
| 5236 | case bitc::FUNC_CODE_INST_ATOMICRMW: { |
| 5237 | // ATOMICRMW_OLD: [ptrty, ptr, val, op, vol, ordering, ssid, align?] |
| 5238 | // ATOMICRMW: [ptrty, ptr, valty, val, op, vol, ordering, ssid, align?] |
| 5239 | const size_t NumRecords = Record.size(); |
| 5240 | unsigned OpNum = 0; |
| 5241 | |
| 5242 | Value *Ptr = nullptr; |
| 5243 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy)) |
| 5244 | return error("Invalid record"); |
| 5245 | |
| 5246 | if (!isa<PointerType>(Ptr->getType())) |
| 5247 | return error("Invalid record"); |
| 5248 | |
| 5249 | Value *Val = nullptr; |
| 5250 | if (BitCode == bitc::FUNC_CODE_INST_ATOMICRMW_OLD) { |
| 5251 | if (popValue(Record, OpNum, NextValueNo, |
| 5252 | getPointerElementFlatType(FullTy), Val)) |
| 5253 | return error("Invalid record"); |
| 5254 | FullTy = getPointerElementFlatType(FullTy); |
| 5255 | } else { |
| 5256 | if (getValueTypePair(Record, OpNum, NextValueNo, Val)) |
| 5257 | return error("Invalid record"); |
| 5258 | FullTy = Val->getType(); |
| 5259 | } |
| 5260 | |
| 5261 | if (!(NumRecords == (OpNum + 4) || NumRecords == (OpNum + 5))) |
| 5262 | return error("Invalid record"); |
| 5263 | |
| 5264 | const AtomicRMWInst::BinOp Operation = |
| 5265 | getDecodedRMWOperation(Record[OpNum]); |
| 5266 | if (Operation < AtomicRMWInst::FIRST_BINOP || |
| 5267 | Operation > AtomicRMWInst::LAST_BINOP) |
| 5268 | return error("Invalid record"); |
| 5269 | |
| 5270 | const bool IsVol = Record[OpNum + 1]; |
| 5271 | |
| 5272 | const AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); |
| 5273 | if (Ordering == AtomicOrdering::NotAtomic || |
| 5274 | Ordering == AtomicOrdering::Unordered) |
| 5275 | return error("Invalid record"); |
| 5276 | |
| 5277 | const SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); |
| 5278 | |
| 5279 | MaybeAlign Alignment; |
| 5280 | |
| 5281 | if (NumRecords == (OpNum + 5)) { |
| 5282 | if (Error Err = parseAlignmentValue(Record[OpNum + 4], Alignment)) |
| 5283 | return Err; |
| 5284 | } |
| 5285 | |
| 5286 | if (!Alignment) |
| 5287 | Alignment = |
| 5288 | Align(TheModule->getDataLayout().getTypeStoreSize(Val->getType())); |
| 5289 | |
| 5290 | I = new AtomicRMWInst(Operation, Ptr, Val, *Alignment, Ordering, SSID); |
| 5291 | cast<AtomicRMWInst>(I)->setVolatile(IsVol); |
| 5292 | |
| 5293 | InstructionList.push_back(I); |
| 5294 | break; |
| 5295 | } |
| 5296 | case bitc::FUNC_CODE_INST_FENCE: { // FENCE:[ordering, ssid] |
| 5297 | if (2 != Record.size()) |
| 5298 | return error("Invalid record"); |
| 5299 | AtomicOrdering Ordering = getDecodedOrdering(Record[0]); |
| 5300 | if (Ordering == AtomicOrdering::NotAtomic || |
| 5301 | Ordering == AtomicOrdering::Unordered || |
| 5302 | Ordering == AtomicOrdering::Monotonic) |
| 5303 | return error("Invalid record"); |
| 5304 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[1]); |
| 5305 | I = new FenceInst(Context, Ordering, SSID); |
| 5306 | InstructionList.push_back(I); |
| 5307 | break; |
| 5308 | } |
| 5309 | case bitc::FUNC_CODE_INST_CALL: { |
| 5310 | // CALL: [paramattrs, cc, fmf, fnty, fnid, arg0, arg1...] |
| 5311 | if (Record.size() < 3) |
| 5312 | return error("Invalid record"); |
| 5313 | |
| 5314 | unsigned OpNum = 0; |
| 5315 | AttributeList PAL = getAttributes(Record[OpNum++]); |
| 5316 | unsigned CCInfo = Record[OpNum++]; |
| 5317 | |
| 5318 | FastMathFlags FMF; |
| 5319 | if ((CCInfo >> bitc::CALL_FMF) & 1) { |
| 5320 | FMF = getDecodedFastMathFlags(Record[OpNum++]); |
| 5321 | if (!FMF.any()) |
| 5322 | return error("Fast math flags indicator set for call with no FMF"); |
| 5323 | } |
| 5324 | |
| 5325 | FunctionType *FTy = nullptr; |
| 5326 | FunctionType *FullFTy = nullptr; |
| 5327 | if ((CCInfo >> bitc::CALL_EXPLICIT_TYPE) & 1) { |
| 5328 | FullFTy = |
| 5329 | dyn_cast<FunctionType>(getFullyStructuredTypeByID(Record[OpNum++])); |
| 5330 | if (!FullFTy) |
| 5331 | return error("Explicit call type is not a function type"); |
| 5332 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); |
| 5333 | } |
| 5334 | |
| 5335 | Value *Callee; |
| 5336 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee, &FullTy)) |
| 5337 | return error("Invalid record"); |
| 5338 | |
| 5339 | PointerType *OpTy = dyn_cast<PointerType>(Callee->getType()); |
| 5340 | if (!OpTy) |
| 5341 | return error("Callee is not a pointer type"); |
| 5342 | if (!FTy) { |
| 5343 | FullFTy = |
| 5344 | dyn_cast<FunctionType>(cast<PointerType>(FullTy)->getElementType()); |
| 5345 | if (!FullFTy) |
| 5346 | return error("Callee is not of pointer to function type"); |
| 5347 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); |
| 5348 | } else if (getPointerElementFlatType(FullTy) != FTy) |
| 5349 | return error("Explicit call type does not match pointee type of " |
| 5350 | "callee operand"); |
| 5351 | if (Record.size() < FTy->getNumParams() + OpNum) |
| 5352 | return error("Insufficient operands to call"); |
| 5353 | |
| 5354 | SmallVector<Value*, 16> Args; |
| 5355 | SmallVector<Type*, 16> ArgsFullTys; |
| 5356 | // Read the fixed params. |
| 5357 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { |
| 5358 | if (FTy->getParamType(i)->isLabelTy()) |
| 5359 | Args.push_back(getBasicBlock(Record[OpNum])); |
| 5360 | else |
| 5361 | Args.push_back(getValue(Record, OpNum, NextValueNo, |
| 5362 | FTy->getParamType(i))); |
| 5363 | ArgsFullTys.push_back(FullFTy->getParamType(i)); |
| 5364 | if (!Args.back()) |
| 5365 | return error("Invalid record"); |
| 5366 | } |
| 5367 | |
| 5368 | // Read type/value pairs for varargs params. |
| 5369 | if (!FTy->isVarArg()) { |
| 5370 | if (OpNum != Record.size()) |
| 5371 | return error("Invalid record"); |
| 5372 | } else { |
| 5373 | while (OpNum != Record.size()) { |
| 5374 | Value *Op; |
| 5375 | Type *FullTy; |
| 5376 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy)) |
| 5377 | return error("Invalid record"); |
| 5378 | Args.push_back(Op); |
| 5379 | ArgsFullTys.push_back(FullTy); |
| 5380 | } |
| 5381 | } |
| 5382 | |
| 5383 | I = CallInst::Create(FTy, Callee, Args, OperandBundles); |
| 5384 | FullTy = FullFTy->getReturnType(); |
| 5385 | OperandBundles.clear(); |
| 5386 | InstructionList.push_back(I); |
| 5387 | cast<CallInst>(I)->setCallingConv( |
| 5388 | static_cast<CallingConv::ID>((0x7ff & CCInfo) >> bitc::CALL_CCONV)); |
| 5389 | CallInst::TailCallKind TCK = CallInst::TCK_None; |
| 5390 | if (CCInfo & 1 << bitc::CALL_TAIL) |
| 5391 | TCK = CallInst::TCK_Tail; |
| 5392 | if (CCInfo & (1 << bitc::CALL_MUSTTAIL)) |
| 5393 | TCK = CallInst::TCK_MustTail; |
| 5394 | if (CCInfo & (1 << bitc::CALL_NOTAIL)) |
| 5395 | TCK = CallInst::TCK_NoTail; |
| 5396 | cast<CallInst>(I)->setTailCallKind(TCK); |
| 5397 | cast<CallInst>(I)->setAttributes(PAL); |
| 5398 | propagateByValSRetTypes(cast<CallBase>(I), ArgsFullTys); |
| 5399 | if (FMF.any()) { |
| 5400 | if (!isa<FPMathOperator>(I)) |
| 5401 | return error("Fast-math-flags specified for call without " |
| 5402 | "floating-point scalar or vector return type"); |
| 5403 | I->setFastMathFlags(FMF); |
| 5404 | } |
| 5405 | break; |
| 5406 | } |
| 5407 | case bitc::FUNC_CODE_INST_VAARG: { // VAARG: [valistty, valist, instty] |
| 5408 | if (Record.size() < 3) |
| 5409 | return error("Invalid record"); |
| 5410 | Type *OpTy = getTypeByID(Record[0]); |
| 5411 | Value *Op = getValue(Record, 1, NextValueNo, OpTy); |
| 5412 | FullTy = getFullyStructuredTypeByID(Record[2]); |
| 5413 | Type *ResTy = flattenPointerTypes(FullTy); |
| 5414 | if (!OpTy || !Op || !ResTy) |
| 5415 | return error("Invalid record"); |
| 5416 | I = new VAArgInst(Op, ResTy); |
| 5417 | InstructionList.push_back(I); |
| 5418 | break; |
| 5419 | } |
| 5420 | |
| 5421 | case bitc::FUNC_CODE_OPERAND_BUNDLE: { |
| 5422 | // A call or an invoke can be optionally prefixed with some variable |
| 5423 | // number of operand bundle blocks. These blocks are read into |
| 5424 | // OperandBundles and consumed at the next call or invoke instruction. |
| 5425 | |
| 5426 | if (Record.empty() || Record[0] >= BundleTags.size()) |
| 5427 | return error("Invalid record"); |
| 5428 | |
| 5429 | std::vector<Value *> Inputs; |
| 5430 | |
| 5431 | unsigned OpNum = 1; |
| 5432 | while (OpNum != Record.size()) { |
| 5433 | Value *Op; |
| 5434 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) |
| 5435 | return error("Invalid record"); |
| 5436 | Inputs.push_back(Op); |
| 5437 | } |
| 5438 | |
| 5439 | OperandBundles.emplace_back(BundleTags[Record[0]], std::move(Inputs)); |
| 5440 | continue; |
| 5441 | } |
| 5442 | |
| 5443 | case bitc::FUNC_CODE_INST_FREEZE: { // FREEZE: [opty,opval] |
| 5444 | unsigned OpNum = 0; |
| 5445 | Value *Op = nullptr; |
| 5446 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy)) |
| 5447 | return error("Invalid record"); |
| 5448 | if (OpNum != Record.size()) |
| 5449 | return error("Invalid record"); |
| 5450 | |
| 5451 | I = new FreezeInst(Op); |
| 5452 | InstructionList.push_back(I); |
| 5453 | break; |
| 5454 | } |
| 5455 | } |
| 5456 | |
| 5457 | // Add instruction to end of current BB. If there is no current BB, reject |
| 5458 | // this file. |
| 5459 | if (!CurBB) { |
| 5460 | I->deleteValue(); |
| 5461 | return error("Invalid instruction with no BB"); |
| 5462 | } |
| 5463 | if (!OperandBundles.empty()) { |
| 5464 | I->deleteValue(); |
| 5465 | return error("Operand bundles found with no consumer"); |
| 5466 | } |
| 5467 | CurBB->getInstList().push_back(I); |
| 5468 | |
| 5469 | // If this was a terminator instruction, move to the next block. |
| 5470 | if (I->isTerminator()) { |
| 5471 | ++CurBBNo; |
| 5472 | CurBB = CurBBNo < FunctionBBs.size() ? FunctionBBs[CurBBNo] : nullptr; |
| 5473 | } |
| 5474 | |
| 5475 | // Non-void values get registered in the value table for future use. |
| 5476 | if (!I->getType()->isVoidTy()) { |
| 5477 | if (!FullTy) { |
| 5478 | FullTy = I->getType(); |
| 5479 | assert((static_cast <bool> (!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType> (FullTy) && (!isa<VectorType>(FullTy) || cast< VectorType>(FullTy)->getElementType()->isFloatingPointTy () || cast<VectorType>(FullTy)->getElementType()-> isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? void (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() || cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5486, __extension__ __PRETTY_FUNCTION__)) |
| 5480 | !FullTy->isPointerTy() && !isa<StructType>(FullTy) &&(static_cast <bool> (!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType> (FullTy) && (!isa<VectorType>(FullTy) || cast< VectorType>(FullTy)->getElementType()->isFloatingPointTy () || cast<VectorType>(FullTy)->getElementType()-> isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? void (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() || cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5486, __extension__ __PRETTY_FUNCTION__)) |
| 5481 | !isa<ArrayType>(FullTy) &&(static_cast <bool> (!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType> (FullTy) && (!isa<VectorType>(FullTy) || cast< VectorType>(FullTy)->getElementType()->isFloatingPointTy () || cast<VectorType>(FullTy)->getElementType()-> isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? void (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() || cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5486, __extension__ __PRETTY_FUNCTION__)) |
| 5482 | (!isa<VectorType>(FullTy) ||(static_cast <bool> (!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType> (FullTy) && (!isa<VectorType>(FullTy) || cast< VectorType>(FullTy)->getElementType()->isFloatingPointTy () || cast<VectorType>(FullTy)->getElementType()-> isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? void (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() || cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5486, __extension__ __PRETTY_FUNCTION__)) |
| 5483 | cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() ||(static_cast <bool> (!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType> (FullTy) && (!isa<VectorType>(FullTy) || cast< VectorType>(FullTy)->getElementType()->isFloatingPointTy () || cast<VectorType>(FullTy)->getElementType()-> isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? void (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() || cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5486, __extension__ __PRETTY_FUNCTION__)) |
| 5484 | cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) &&(static_cast <bool> (!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType> (FullTy) && (!isa<VectorType>(FullTy) || cast< VectorType>(FullTy)->getElementType()->isFloatingPointTy () || cast<VectorType>(FullTy)->getElementType()-> isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? void (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() || cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5486, __extension__ __PRETTY_FUNCTION__)) |
| 5485 | "Structured types must be assigned with corresponding non-opaque "(static_cast <bool> (!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType> (FullTy) && (!isa<VectorType>(FullTy) || cast< VectorType>(FullTy)->getElementType()->isFloatingPointTy () || cast<VectorType>(FullTy)->getElementType()-> isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? void (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() || cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5486, __extension__ __PRETTY_FUNCTION__)) |
| 5486 | "pointer type")(static_cast <bool> (!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType> (FullTy) && (!isa<VectorType>(FullTy) || cast< VectorType>(FullTy)->getElementType()->isFloatingPointTy () || cast<VectorType>(FullTy)->getElementType()-> isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? void (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || cast<VectorType>(FullTy)->getElementType()->isFloatingPointTy() || cast<VectorType>(FullTy)->getElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5486, __extension__ __PRETTY_FUNCTION__)); |
| 5487 | } |
| 5488 | |
| 5489 | assert(I->getType() == flattenPointerTypes(FullTy) &&(static_cast <bool> (I->getType() == flattenPointerTypes (FullTy) && "Incorrect fully structured type provided for Instruction" ) ? void (0) : __assert_fail ("I->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for Instruction\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5490, __extension__ __PRETTY_FUNCTION__)) |
| 5490 | "Incorrect fully structured type provided for Instruction")(static_cast <bool> (I->getType() == flattenPointerTypes (FullTy) && "Incorrect fully structured type provided for Instruction" ) ? void (0) : __assert_fail ("I->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for Instruction\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5490, __extension__ __PRETTY_FUNCTION__)); |
| 5491 | ValueList.assignValue(I, NextValueNo++, FullTy); |
| 5492 | } |
| 5493 | } |
| 5494 | |
| 5495 | OutOfRecordLoop: |
| 5496 | |
| 5497 | if (!OperandBundles.empty()) |
| 5498 | return error("Operand bundles found with no consumer"); |
| 5499 | |
| 5500 | // Check the function list for unresolved values. |
| 5501 | if (Argument *A = dyn_cast<Argument>(ValueList.back())) { |
| 5502 | if (!A->getParent()) { |
| 5503 | // We found at least one unresolved value. Nuke them all to avoid leaks. |
| 5504 | for (unsigned i = ModuleValueListSize, e = ValueList.size(); i != e; ++i){ |
| 5505 | if ((A = dyn_cast_or_null<Argument>(ValueList[i])) && !A->getParent()) { |
| 5506 | A->replaceAllUsesWith(UndefValue::get(A->getType())); |
| 5507 | delete A; |
| 5508 | } |
| 5509 | } |
| 5510 | return error("Never resolved value found in function"); |
| 5511 | } |
| 5512 | } |
| 5513 | |
| 5514 | // Unexpected unresolved metadata about to be dropped. |
| 5515 | if (MDLoader->hasFwdRefs()) |
| 5516 | return error("Invalid function metadata: outgoing forward refs"); |
| 5517 | |
| 5518 | // Trim the value list down to the size it was before we parsed this function. |
| 5519 | ValueList.shrinkTo(ModuleValueListSize); |
| 5520 | MDLoader->shrinkTo(ModuleMDLoaderSize); |
| 5521 | std::vector<BasicBlock*>().swap(FunctionBBs); |
| 5522 | return Error::success(); |
| 5523 | } |
| 5524 | |
| 5525 | /// Find the function body in the bitcode stream |
| 5526 | Error BitcodeReader::findFunctionInStream( |
| 5527 | Function *F, |
| 5528 | DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator) { |
| 5529 | while (DeferredFunctionInfoIterator->second == 0) { |
| 5530 | // This is the fallback handling for the old format bitcode that |
| 5531 | // didn't contain the function index in the VST, or when we have |
| 5532 | // an anonymous function which would not have a VST entry. |
| 5533 | // Assert that we have one of those two cases. |
| 5534 | assert(VSTOffset == 0 || !F->hasName())(static_cast <bool> (VSTOffset == 0 || !F->hasName() ) ? void (0) : __assert_fail ("VSTOffset == 0 || !F->hasName()" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5534, __extension__ __PRETTY_FUNCTION__)); |
| 5535 | // Parse the next body in the stream and set its position in the |
| 5536 | // DeferredFunctionInfo map. |
| 5537 | if (Error Err = rememberAndSkipFunctionBodies()) |
| 5538 | return Err; |
| 5539 | } |
| 5540 | return Error::success(); |
| 5541 | } |
| 5542 | |
| 5543 | SyncScope::ID BitcodeReader::getDecodedSyncScopeID(unsigned Val) { |
| 5544 | if (Val == SyncScope::SingleThread || Val == SyncScope::System) |
| 5545 | return SyncScope::ID(Val); |
| 5546 | if (Val >= SSIDs.size()) |
| 5547 | return SyncScope::System; // Map unknown synchronization scopes to system. |
| 5548 | return SSIDs[Val]; |
| 5549 | } |
| 5550 | |
| 5551 | //===----------------------------------------------------------------------===// |
| 5552 | // GVMaterializer implementation |
| 5553 | //===----------------------------------------------------------------------===// |
| 5554 | |
| 5555 | Error BitcodeReader::materialize(GlobalValue *GV) { |
| 5556 | Function *F = dyn_cast<Function>(GV); |
| 5557 | // If it's not a function or is already material, ignore the request. |
| 5558 | if (!F || !F->isMaterializable()) |
| 5559 | return Error::success(); |
| 5560 | |
| 5561 | DenseMap<Function*, uint64_t>::iterator DFII = DeferredFunctionInfo.find(F); |
| 5562 | assert(DFII != DeferredFunctionInfo.end() && "Deferred function not found!")(static_cast <bool> (DFII != DeferredFunctionInfo.end() && "Deferred function not found!") ? void (0) : __assert_fail ("DFII != DeferredFunctionInfo.end() && \"Deferred function not found!\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5562, __extension__ __PRETTY_FUNCTION__)); |
| 5563 | // If its position is recorded as 0, its body is somewhere in the stream |
| 5564 | // but we haven't seen it yet. |
| 5565 | if (DFII->second == 0) |
| 5566 | if (Error Err = findFunctionInStream(F, DFII)) |
| 5567 | return Err; |
| 5568 | |
| 5569 | // Materialize metadata before parsing any function bodies. |
| 5570 | if (Error Err = materializeMetadata()) |
| 5571 | return Err; |
| 5572 | |
| 5573 | // Move the bit stream to the saved position of the deferred function body. |
| 5574 | if (Error JumpFailed = Stream.JumpToBit(DFII->second)) |
| 5575 | return JumpFailed; |
| 5576 | if (Error Err = parseFunctionBody(F)) |
| 5577 | return Err; |
| 5578 | F->setIsMaterializable(false); |
| 5579 | |
| 5580 | if (StripDebugInfo) |
| 5581 | stripDebugInfo(*F); |
| 5582 | |
| 5583 | // Upgrade any old intrinsic calls in the function. |
| 5584 | for (auto &I : UpgradedIntrinsics) { |
| 5585 | for (auto UI = I.first->materialized_user_begin(), UE = I.first->user_end(); |
| 5586 | UI != UE;) { |
| 5587 | User *U = *UI; |
| 5588 | ++UI; |
| 5589 | if (CallInst *CI = dyn_cast<CallInst>(U)) |
| 5590 | UpgradeIntrinsicCall(CI, I.second); |
| 5591 | } |
| 5592 | } |
| 5593 | |
| 5594 | // Update calls to the remangled intrinsics |
| 5595 | for (auto &I : RemangledIntrinsics) |
| 5596 | for (auto UI = I.first->materialized_user_begin(), UE = I.first->user_end(); |
| 5597 | UI != UE;) |
| 5598 | // Don't expect any other users than call sites |
| 5599 | cast<CallBase>(*UI++)->setCalledFunction(I.second); |
| 5600 | |
| 5601 | // Finish fn->subprogram upgrade for materialized functions. |
| 5602 | if (DISubprogram *SP = MDLoader->lookupSubprogramForFunction(F)) |
| 5603 | F->setSubprogram(SP); |
| 5604 | |
| 5605 | // Check if the TBAA Metadata are valid, otherwise we will need to strip them. |
| 5606 | if (!MDLoader->isStrippingTBAA()) { |
| 5607 | for (auto &I : instructions(F)) { |
| 5608 | MDNode *TBAA = I.getMetadata(LLVMContext::MD_tbaa); |
| 5609 | if (!TBAA || TBAAVerifyHelper.visitTBAAMetadata(I, TBAA)) |
| 5610 | continue; |
| 5611 | MDLoader->setStripTBAA(true); |
| 5612 | stripTBAA(F->getParent()); |
| 5613 | } |
| 5614 | } |
| 5615 | |
| 5616 | for (auto &I : instructions(F)) { |
| 5617 | // "Upgrade" older incorrect branch weights by dropping them. |
| 5618 | if (auto *MD = I.getMetadata(LLVMContext::MD_prof)) { |
| 5619 | if (MD->getOperand(0) != nullptr && isa<MDString>(MD->getOperand(0))) { |
| 5620 | MDString *MDS = cast<MDString>(MD->getOperand(0)); |
| 5621 | StringRef ProfName = MDS->getString(); |
| 5622 | // Check consistency of !prof branch_weights metadata. |
| 5623 | if (!ProfName.equals("branch_weights")) |
| 5624 | continue; |
| 5625 | unsigned ExpectedNumOperands = 0; |
| 5626 | if (BranchInst *BI = dyn_cast<BranchInst>(&I)) |
| 5627 | ExpectedNumOperands = BI->getNumSuccessors(); |
| 5628 | else if (SwitchInst *SI = dyn_cast<SwitchInst>(&I)) |
| 5629 | ExpectedNumOperands = SI->getNumSuccessors(); |
| 5630 | else if (isa<CallInst>(&I)) |
| 5631 | ExpectedNumOperands = 1; |
| 5632 | else if (IndirectBrInst *IBI = dyn_cast<IndirectBrInst>(&I)) |
| 5633 | ExpectedNumOperands = IBI->getNumDestinations(); |
| 5634 | else if (isa<SelectInst>(&I)) |
| 5635 | ExpectedNumOperands = 2; |
| 5636 | else |
| 5637 | continue; // ignore and continue. |
| 5638 | |
| 5639 | // If branch weight doesn't match, just strip branch weight. |
| 5640 | if (MD->getNumOperands() != 1 + ExpectedNumOperands) |
| 5641 | I.setMetadata(LLVMContext::MD_prof, nullptr); |
| 5642 | } |
| 5643 | } |
| 5644 | |
| 5645 | // Remove incompatible attributes on function calls. |
| 5646 | if (auto *CI = dyn_cast<CallBase>(&I)) { |
| 5647 | CI->removeAttributes(AttributeList::ReturnIndex, |
| 5648 | AttributeFuncs::typeIncompatible( |
| 5649 | CI->getFunctionType()->getReturnType())); |
| 5650 | |
| 5651 | for (unsigned ArgNo = 0; ArgNo < CI->arg_size(); ++ArgNo) |
| 5652 | CI->removeParamAttrs(ArgNo, AttributeFuncs::typeIncompatible( |
| 5653 | CI->getArgOperand(ArgNo)->getType())); |
| 5654 | } |
| 5655 | } |
| 5656 | |
| 5657 | // Look for functions that rely on old function attribute behavior. |
| 5658 | UpgradeFunctionAttributes(*F); |
| 5659 | |
| 5660 | // Bring in any functions that this function forward-referenced via |
| 5661 | // blockaddresses. |
| 5662 | return materializeForwardReferencedFunctions(); |
| 5663 | } |
| 5664 | |
| 5665 | Error BitcodeReader::materializeModule() { |
| 5666 | if (Error Err = materializeMetadata()) |
| 5667 | return Err; |
| 5668 | |
| 5669 | // Promise to materialize all forward references. |
| 5670 | WillMaterializeAllForwardRefs = true; |
| 5671 | |
| 5672 | // Iterate over the module, deserializing any functions that are still on |
| 5673 | // disk. |
| 5674 | for (Function &F : *TheModule) { |
| 5675 | if (Error Err = materialize(&F)) |
| 5676 | return Err; |
| 5677 | } |
| 5678 | // At this point, if there are any function bodies, parse the rest of |
| 5679 | // the bits in the module past the last function block we have recorded |
| 5680 | // through either lazy scanning or the VST. |
| 5681 | if (LastFunctionBlockBit || NextUnreadBit) |
| 5682 | if (Error Err = parseModule(LastFunctionBlockBit > NextUnreadBit |
| 5683 | ? LastFunctionBlockBit |
| 5684 | : NextUnreadBit)) |
| 5685 | return Err; |
| 5686 | |
| 5687 | // Check that all block address forward references got resolved (as we |
| 5688 | // promised above). |
| 5689 | if (!BasicBlockFwdRefs.empty()) |
| 5690 | return error("Never resolved function from blockaddress"); |
| 5691 | |
| 5692 | // Upgrade any intrinsic calls that slipped through (should not happen!) and |
| 5693 | // delete the old functions to clean up. We can't do this unless the entire |
| 5694 | // module is materialized because there could always be another function body |
| 5695 | // with calls to the old function. |
| 5696 | for (auto &I : UpgradedIntrinsics) { |
| 5697 | for (auto *U : I.first->users()) { |
| 5698 | if (CallInst *CI = dyn_cast<CallInst>(U)) |
| 5699 | UpgradeIntrinsicCall(CI, I.second); |
| 5700 | } |
| 5701 | if (!I.first->use_empty()) |
| 5702 | I.first->replaceAllUsesWith(I.second); |
| 5703 | I.first->eraseFromParent(); |
| 5704 | } |
| 5705 | UpgradedIntrinsics.clear(); |
| 5706 | // Do the same for remangled intrinsics |
| 5707 | for (auto &I : RemangledIntrinsics) { |
| 5708 | I.first->replaceAllUsesWith(I.second); |
| 5709 | I.first->eraseFromParent(); |
| 5710 | } |
| 5711 | RemangledIntrinsics.clear(); |
| 5712 | |
| 5713 | UpgradeDebugInfo(*TheModule); |
| 5714 | |
| 5715 | UpgradeModuleFlags(*TheModule); |
| 5716 | |
| 5717 | UpgradeARCRuntime(*TheModule); |
| 5718 | |
| 5719 | return Error::success(); |
| 5720 | } |
| 5721 | |
| 5722 | std::vector<StructType *> BitcodeReader::getIdentifiedStructTypes() const { |
| 5723 | return IdentifiedStructTypes; |
| 5724 | } |
| 5725 | |
| 5726 | ModuleSummaryIndexBitcodeReader::ModuleSummaryIndexBitcodeReader( |
| 5727 | BitstreamCursor Cursor, StringRef Strtab, ModuleSummaryIndex &TheIndex, |
| 5728 | StringRef ModulePath, unsigned ModuleId) |
| 5729 | : BitcodeReaderBase(std::move(Cursor), Strtab), TheIndex(TheIndex), |
| 5730 | ModulePath(ModulePath), ModuleId(ModuleId) {} |
| 5731 | |
| 5732 | void ModuleSummaryIndexBitcodeReader::addThisModule() { |
| 5733 | TheIndex.addModule(ModulePath, ModuleId); |
| 5734 | } |
| 5735 | |
| 5736 | ModuleSummaryIndex::ModuleInfo * |
| 5737 | ModuleSummaryIndexBitcodeReader::getThisModule() { |
| 5738 | return TheIndex.getModule(ModulePath); |
| 5739 | } |
| 5740 | |
| 5741 | std::pair<ValueInfo, GlobalValue::GUID> |
| 5742 | ModuleSummaryIndexBitcodeReader::getValueInfoFromValueId(unsigned ValueId) { |
| 5743 | auto VGI = ValueIdToValueInfoMap[ValueId]; |
| 5744 | assert(VGI.first)(static_cast <bool> (VGI.first) ? void (0) : __assert_fail ("VGI.first", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5744, __extension__ __PRETTY_FUNCTION__)); |
| 5745 | return VGI; |
| 5746 | } |
| 5747 | |
| 5748 | void ModuleSummaryIndexBitcodeReader::setValueGUID( |
| 5749 | uint64_t ValueID, StringRef ValueName, GlobalValue::LinkageTypes Linkage, |
| 5750 | StringRef SourceFileName) { |
| 5751 | std::string GlobalId = |
| 5752 | GlobalValue::getGlobalIdentifier(ValueName, Linkage, SourceFileName); |
| 5753 | auto ValueGUID = GlobalValue::getGUID(GlobalId); |
| 5754 | auto OriginalNameID = ValueGUID; |
| 5755 | if (GlobalValue::isLocalLinkage(Linkage)) |
| 5756 | OriginalNameID = GlobalValue::getGUID(ValueName); |
| 5757 | if (PrintSummaryGUIDs) |
| 5758 | dbgs() << "GUID " << ValueGUID << "(" << OriginalNameID << ") is " |
| 5759 | << ValueName << "\n"; |
| 5760 | |
| 5761 | // UseStrtab is false for legacy summary formats and value names are |
| 5762 | // created on stack. In that case we save the name in a string saver in |
| 5763 | // the index so that the value name can be recorded. |
| 5764 | ValueIdToValueInfoMap[ValueID] = std::make_pair( |
| 5765 | TheIndex.getOrInsertValueInfo( |
| 5766 | ValueGUID, |
| 5767 | UseStrtab ? ValueName : TheIndex.saveString(ValueName)), |
| 5768 | OriginalNameID); |
| 5769 | } |
| 5770 | |
| 5771 | // Specialized value symbol table parser used when reading module index |
| 5772 | // blocks where we don't actually create global values. The parsed information |
| 5773 | // is saved in the bitcode reader for use when later parsing summaries. |
| 5774 | Error ModuleSummaryIndexBitcodeReader::parseValueSymbolTable( |
| 5775 | uint64_t Offset, |
| 5776 | DenseMap<unsigned, GlobalValue::LinkageTypes> &ValueIdToLinkageMap) { |
| 5777 | // With a strtab the VST is not required to parse the summary. |
| 5778 | if (UseStrtab) |
| 5779 | return Error::success(); |
| 5780 | |
| 5781 | assert(Offset > 0 && "Expected non-zero VST offset")(static_cast <bool> (Offset > 0 && "Expected non-zero VST offset" ) ? void (0) : __assert_fail ("Offset > 0 && \"Expected non-zero VST offset\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5781, __extension__ __PRETTY_FUNCTION__)); |
| 5782 | Expected<uint64_t> MaybeCurrentBit = jumpToValueSymbolTable(Offset, Stream); |
| 5783 | if (!MaybeCurrentBit) |
| 5784 | return MaybeCurrentBit.takeError(); |
| 5785 | uint64_t CurrentBit = MaybeCurrentBit.get(); |
| 5786 | |
| 5787 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) |
| 5788 | return Err; |
| 5789 | |
| 5790 | SmallVector<uint64_t, 64> Record; |
| 5791 | |
| 5792 | // Read all the records for this value table. |
| 5793 | SmallString<128> ValueName; |
| 5794 | |
| 5795 | while (true) { |
| 5796 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 5797 | if (!MaybeEntry) |
| 5798 | return MaybeEntry.takeError(); |
| 5799 | BitstreamEntry Entry = MaybeEntry.get(); |
| 5800 | |
| 5801 | switch (Entry.Kind) { |
| 5802 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 5803 | case BitstreamEntry::Error: |
| 5804 | return error("Malformed block"); |
| 5805 | case BitstreamEntry::EndBlock: |
| 5806 | // Done parsing VST, jump back to wherever we came from. |
| 5807 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) |
| 5808 | return JumpFailed; |
| 5809 | return Error::success(); |
| 5810 | case BitstreamEntry::Record: |
| 5811 | // The interesting case. |
| 5812 | break; |
| 5813 | } |
| 5814 | |
| 5815 | // Read a record. |
| 5816 | Record.clear(); |
| 5817 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 5818 | if (!MaybeRecord) |
| 5819 | return MaybeRecord.takeError(); |
| 5820 | switch (MaybeRecord.get()) { |
| 5821 | default: // Default behavior: ignore (e.g. VST_CODE_BBENTRY records). |
| 5822 | break; |
| 5823 | case bitc::VST_CODE_ENTRY: { // VST_CODE_ENTRY: [valueid, namechar x N] |
| 5824 | if (convertToString(Record, 1, ValueName)) |
| 5825 | return error("Invalid record"); |
| 5826 | unsigned ValueID = Record[0]; |
| 5827 | assert(!SourceFileName.empty())(static_cast <bool> (!SourceFileName.empty()) ? void (0 ) : __assert_fail ("!SourceFileName.empty()", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5827, __extension__ __PRETTY_FUNCTION__)); |
| 5828 | auto VLI = ValueIdToLinkageMap.find(ValueID); |
| 5829 | assert(VLI != ValueIdToLinkageMap.end() &&(static_cast <bool> (VLI != ValueIdToLinkageMap.end() && "No linkage found for VST entry?") ? void (0) : __assert_fail ("VLI != ValueIdToLinkageMap.end() && \"No linkage found for VST entry?\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5830, __extension__ __PRETTY_FUNCTION__)) |
| 5830 | "No linkage found for VST entry?")(static_cast <bool> (VLI != ValueIdToLinkageMap.end() && "No linkage found for VST entry?") ? void (0) : __assert_fail ("VLI != ValueIdToLinkageMap.end() && \"No linkage found for VST entry?\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5830, __extension__ __PRETTY_FUNCTION__)); |
| 5831 | auto Linkage = VLI->second; |
| 5832 | setValueGUID(ValueID, ValueName, Linkage, SourceFileName); |
| 5833 | ValueName.clear(); |
| 5834 | break; |
| 5835 | } |
| 5836 | case bitc::VST_CODE_FNENTRY: { |
| 5837 | // VST_CODE_FNENTRY: [valueid, offset, namechar x N] |
| 5838 | if (convertToString(Record, 2, ValueName)) |
| 5839 | return error("Invalid record"); |
| 5840 | unsigned ValueID = Record[0]; |
| 5841 | assert(!SourceFileName.empty())(static_cast <bool> (!SourceFileName.empty()) ? void (0 ) : __assert_fail ("!SourceFileName.empty()", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5841, __extension__ __PRETTY_FUNCTION__)); |
| 5842 | auto VLI = ValueIdToLinkageMap.find(ValueID); |
| 5843 | assert(VLI != ValueIdToLinkageMap.end() &&(static_cast <bool> (VLI != ValueIdToLinkageMap.end() && "No linkage found for VST entry?") ? void (0) : __assert_fail ("VLI != ValueIdToLinkageMap.end() && \"No linkage found for VST entry?\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5844, __extension__ __PRETTY_FUNCTION__)) |
| 5844 | "No linkage found for VST entry?")(static_cast <bool> (VLI != ValueIdToLinkageMap.end() && "No linkage found for VST entry?") ? void (0) : __assert_fail ("VLI != ValueIdToLinkageMap.end() && \"No linkage found for VST entry?\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5844, __extension__ __PRETTY_FUNCTION__)); |
| 5845 | auto Linkage = VLI->second; |
| 5846 | setValueGUID(ValueID, ValueName, Linkage, SourceFileName); |
| 5847 | ValueName.clear(); |
| 5848 | break; |
| 5849 | } |
| 5850 | case bitc::VST_CODE_COMBINED_ENTRY: { |
| 5851 | // VST_CODE_COMBINED_ENTRY: [valueid, refguid] |
| 5852 | unsigned ValueID = Record[0]; |
| 5853 | GlobalValue::GUID RefGUID = Record[1]; |
| 5854 | // The "original name", which is the second value of the pair will be |
| 5855 | // overriden later by a FS_COMBINED_ORIGINAL_NAME in the combined index. |
| 5856 | ValueIdToValueInfoMap[ValueID] = |
| 5857 | std::make_pair(TheIndex.getOrInsertValueInfo(RefGUID), RefGUID); |
| 5858 | break; |
| 5859 | } |
| 5860 | } |
| 5861 | } |
| 5862 | } |
| 5863 | |
| 5864 | // Parse just the blocks needed for building the index out of the module. |
| 5865 | // At the end of this routine the module Index is populated with a map |
| 5866 | // from global value id to GlobalValueSummary objects. |
| 5867 | Error ModuleSummaryIndexBitcodeReader::parseModule() { |
| 5868 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) |
| 5869 | return Err; |
| 5870 | |
| 5871 | SmallVector<uint64_t, 64> Record; |
| 5872 | DenseMap<unsigned, GlobalValue::LinkageTypes> ValueIdToLinkageMap; |
| 5873 | unsigned ValueId = 0; |
| 5874 | |
| 5875 | // Read the index for this module. |
| 5876 | while (true) { |
| 5877 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); |
| 5878 | if (!MaybeEntry) |
| 5879 | return MaybeEntry.takeError(); |
| 5880 | llvm::BitstreamEntry Entry = MaybeEntry.get(); |
| 5881 | |
| 5882 | switch (Entry.Kind) { |
| 5883 | case BitstreamEntry::Error: |
| 5884 | return error("Malformed block"); |
| 5885 | case BitstreamEntry::EndBlock: |
| 5886 | return Error::success(); |
| 5887 | |
| 5888 | case BitstreamEntry::SubBlock: |
| 5889 | switch (Entry.ID) { |
| 5890 | default: // Skip unknown content. |
| 5891 | if (Error Err = Stream.SkipBlock()) |
| 5892 | return Err; |
| 5893 | break; |
| 5894 | case bitc::BLOCKINFO_BLOCK_ID: |
| 5895 | // Need to parse these to get abbrev ids (e.g. for VST) |
| 5896 | if (readBlockInfo()) |
| 5897 | return error("Malformed block"); |
| 5898 | break; |
| 5899 | case bitc::VALUE_SYMTAB_BLOCK_ID: |
| 5900 | // Should have been parsed earlier via VSTOffset, unless there |
| 5901 | // is no summary section. |
| 5902 | assert(((SeenValueSymbolTable && VSTOffset > 0) ||(static_cast <bool> (((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && "Expected early VST parse via VSTOffset record" ) ? void (0) : __assert_fail ("((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && \"Expected early VST parse via VSTOffset record\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5904, __extension__ __PRETTY_FUNCTION__)) |
| 5903 | !SeenGlobalValSummary) &&(static_cast <bool> (((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && "Expected early VST parse via VSTOffset record" ) ? void (0) : __assert_fail ("((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && \"Expected early VST parse via VSTOffset record\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5904, __extension__ __PRETTY_FUNCTION__)) |
| 5904 | "Expected early VST parse via VSTOffset record")(static_cast <bool> (((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && "Expected early VST parse via VSTOffset record" ) ? void (0) : __assert_fail ("((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && \"Expected early VST parse via VSTOffset record\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5904, __extension__ __PRETTY_FUNCTION__)); |
| 5905 | if (Error Err = Stream.SkipBlock()) |
| 5906 | return Err; |
| 5907 | break; |
| 5908 | case bitc::GLOBALVAL_SUMMARY_BLOCK_ID: |
| 5909 | case bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID: |
| 5910 | // Add the module if it is a per-module index (has a source file name). |
| 5911 | if (!SourceFileName.empty()) |
| 5912 | addThisModule(); |
| 5913 | assert(!SeenValueSymbolTable &&(static_cast <bool> (!SeenValueSymbolTable && "Already read VST when parsing summary block?" ) ? void (0) : __assert_fail ("!SeenValueSymbolTable && \"Already read VST when parsing summary block?\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5914, __extension__ __PRETTY_FUNCTION__)) |
| 5914 | "Already read VST when parsing summary block?")(static_cast <bool> (!SeenValueSymbolTable && "Already read VST when parsing summary block?" ) ? void (0) : __assert_fail ("!SeenValueSymbolTable && \"Already read VST when parsing summary block?\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5914, __extension__ __PRETTY_FUNCTION__)); |
| 5915 | // We might not have a VST if there were no values in the |
| 5916 | // summary. An empty summary block generated when we are |
| 5917 | // performing ThinLTO compiles so we don't later invoke |
| 5918 | // the regular LTO process on them. |
| 5919 | if (VSTOffset > 0) { |
| 5920 | if (Error Err = parseValueSymbolTable(VSTOffset, ValueIdToLinkageMap)) |
| 5921 | return Err; |
| 5922 | SeenValueSymbolTable = true; |
| 5923 | } |
| 5924 | SeenGlobalValSummary = true; |
| 5925 | if (Error Err = parseEntireSummary(Entry.ID)) |
| 5926 | return Err; |
| 5927 | break; |
| 5928 | case bitc::MODULE_STRTAB_BLOCK_ID: |
| 5929 | if (Error Err = parseModuleStringTable()) |
| 5930 | return Err; |
| 5931 | break; |
| 5932 | } |
| 5933 | continue; |
| 5934 | |
| 5935 | case BitstreamEntry::Record: { |
| 5936 | Record.clear(); |
| 5937 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); |
| 5938 | if (!MaybeBitCode) |
| 5939 | return MaybeBitCode.takeError(); |
| 5940 | switch (MaybeBitCode.get()) { |
| 5941 | default: |
| 5942 | break; // Default behavior, ignore unknown content. |
| 5943 | case bitc::MODULE_CODE_VERSION: { |
| 5944 | if (Error Err = parseVersionRecord(Record).takeError()) |
| 5945 | return Err; |
| 5946 | break; |
| 5947 | } |
| 5948 | /// MODULE_CODE_SOURCE_FILENAME: [namechar x N] |
| 5949 | case bitc::MODULE_CODE_SOURCE_FILENAME: { |
| 5950 | SmallString<128> ValueName; |
| 5951 | if (convertToString(Record, 0, ValueName)) |
| 5952 | return error("Invalid record"); |
| 5953 | SourceFileName = ValueName.c_str(); |
| 5954 | break; |
| 5955 | } |
| 5956 | /// MODULE_CODE_HASH: [5*i32] |
| 5957 | case bitc::MODULE_CODE_HASH: { |
| 5958 | if (Record.size() != 5) |
| 5959 | return error("Invalid hash length " + Twine(Record.size()).str()); |
| 5960 | auto &Hash = getThisModule()->second.second; |
| 5961 | int Pos = 0; |
| 5962 | for (auto &Val : Record) { |
| 5963 | assert(!(Val >> 32) && "Unexpected high bits set")(static_cast <bool> (!(Val >> 32) && "Unexpected high bits set" ) ? void (0) : __assert_fail ("!(Val >> 32) && \"Unexpected high bits set\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5963, __extension__ __PRETTY_FUNCTION__)); |
| 5964 | Hash[Pos++] = Val; |
| 5965 | } |
| 5966 | break; |
| 5967 | } |
| 5968 | /// MODULE_CODE_VSTOFFSET: [offset] |
| 5969 | case bitc::MODULE_CODE_VSTOFFSET: |
| 5970 | if (Record.empty()) |
| 5971 | return error("Invalid record"); |
| 5972 | // Note that we subtract 1 here because the offset is relative to one |
| 5973 | // word before the start of the identification or module block, which |
| 5974 | // was historically always the start of the regular bitcode header. |
| 5975 | VSTOffset = Record[0] - 1; |
| 5976 | break; |
| 5977 | // v1 GLOBALVAR: [pointer type, isconst, initid, linkage, ...] |
| 5978 | // v1 FUNCTION: [type, callingconv, isproto, linkage, ...] |
| 5979 | // v1 ALIAS: [alias type, addrspace, aliasee val#, linkage, ...] |
| 5980 | // v2: [strtab offset, strtab size, v1] |
| 5981 | case bitc::MODULE_CODE_GLOBALVAR: |
| 5982 | case bitc::MODULE_CODE_FUNCTION: |
| 5983 | case bitc::MODULE_CODE_ALIAS: { |
| 5984 | StringRef Name; |
| 5985 | ArrayRef<uint64_t> GVRecord; |
| 5986 | std::tie(Name, GVRecord) = readNameFromStrtab(Record); |
| 5987 | if (GVRecord.size() <= 3) |
| 5988 | return error("Invalid record"); |
| 5989 | uint64_t RawLinkage = GVRecord[3]; |
| 5990 | GlobalValue::LinkageTypes Linkage = getDecodedLinkage(RawLinkage); |
| 5991 | if (!UseStrtab) { |
| 5992 | ValueIdToLinkageMap[ValueId++] = Linkage; |
| 5993 | break; |
| 5994 | } |
| 5995 | |
| 5996 | setValueGUID(ValueId++, Name, Linkage, SourceFileName); |
| 5997 | break; |
| 5998 | } |
| 5999 | } |
| 6000 | } |
| 6001 | continue; |
| 6002 | } |
| 6003 | } |
| 6004 | } |
| 6005 | |
| 6006 | std::vector<ValueInfo> |
| 6007 | ModuleSummaryIndexBitcodeReader::makeRefList(ArrayRef<uint64_t> Record) { |
| 6008 | std::vector<ValueInfo> Ret; |
| 6009 | Ret.reserve(Record.size()); |
| 6010 | for (uint64_t RefValueId : Record) |
| 6011 | Ret.push_back(getValueInfoFromValueId(RefValueId).first); |
| 6012 | return Ret; |
| 6013 | } |
| 6014 | |
| 6015 | std::vector<FunctionSummary::EdgeTy> |
| 6016 | ModuleSummaryIndexBitcodeReader::makeCallList(ArrayRef<uint64_t> Record, |
| 6017 | bool IsOldProfileFormat, |
| 6018 | bool HasProfile, bool HasRelBF) { |
| 6019 | std::vector<FunctionSummary::EdgeTy> Ret; |
| 6020 | Ret.reserve(Record.size()); |
| 6021 | for (unsigned I = 0, E = Record.size(); I != E; ++I) { |
| 6022 | CalleeInfo::HotnessType Hotness = CalleeInfo::HotnessType::Unknown; |
| 6023 | uint64_t RelBF = 0; |
| 6024 | ValueInfo Callee = getValueInfoFromValueId(Record[I]).first; |
| 6025 | if (IsOldProfileFormat) { |
| 6026 | I += 1; // Skip old callsitecount field |
| 6027 | if (HasProfile) |
| 6028 | I += 1; // Skip old profilecount field |
| 6029 | } else if (HasProfile) |
| 6030 | Hotness = static_cast<CalleeInfo::HotnessType>(Record[++I]); |
| 6031 | else if (HasRelBF) |
| 6032 | RelBF = Record[++I]; |
| 6033 | Ret.push_back(FunctionSummary::EdgeTy{Callee, CalleeInfo(Hotness, RelBF)}); |
| 6034 | } |
| 6035 | return Ret; |
| 6036 | } |
| 6037 | |
| 6038 | static void |
| 6039 | parseWholeProgramDevirtResolutionByArg(ArrayRef<uint64_t> Record, size_t &Slot, |
| 6040 | WholeProgramDevirtResolution &Wpd) { |
| 6041 | uint64_t ArgNum = Record[Slot++]; |
| 6042 | WholeProgramDevirtResolution::ByArg &B = |
| 6043 | Wpd.ResByArg[{Record.begin() + Slot, Record.begin() + Slot + ArgNum}]; |
| 6044 | Slot += ArgNum; |
| 6045 | |
| 6046 | B.TheKind = |
| 6047 | static_cast<WholeProgramDevirtResolution::ByArg::Kind>(Record[Slot++]); |
| 6048 | B.Info = Record[Slot++]; |
| 6049 | B.Byte = Record[Slot++]; |
| 6050 | B.Bit = Record[Slot++]; |
| 6051 | } |
| 6052 | |
| 6053 | static void parseWholeProgramDevirtResolution(ArrayRef<uint64_t> Record, |
| 6054 | StringRef Strtab, size_t &Slot, |
| 6055 | TypeIdSummary &TypeId) { |
| 6056 | uint64_t Id = Record[Slot++]; |
| 6057 | WholeProgramDevirtResolution &Wpd = TypeId.WPDRes[Id]; |
| 6058 | |
| 6059 | Wpd.TheKind = static_cast<WholeProgramDevirtResolution::Kind>(Record[Slot++]); |
| 6060 | Wpd.SingleImplName = {Strtab.data() + Record[Slot], |
| 6061 | static_cast<size_t>(Record[Slot + 1])}; |
| 6062 | Slot += 2; |
| 6063 | |
| 6064 | uint64_t ResByArgNum = Record[Slot++]; |
| 6065 | for (uint64_t I = 0; I != ResByArgNum; ++I) |
| 6066 | parseWholeProgramDevirtResolutionByArg(Record, Slot, Wpd); |
| 6067 | } |
| 6068 | |
| 6069 | static void parseTypeIdSummaryRecord(ArrayRef<uint64_t> Record, |
| 6070 | StringRef Strtab, |
| 6071 | ModuleSummaryIndex &TheIndex) { |
| 6072 | size_t Slot = 0; |
| 6073 | TypeIdSummary &TypeId = TheIndex.getOrInsertTypeIdSummary( |
| 6074 | {Strtab.data() + Record[Slot], static_cast<size_t>(Record[Slot + 1])}); |
| 6075 | Slot += 2; |
| 6076 | |
| 6077 | TypeId.TTRes.TheKind = static_cast<TypeTestResolution::Kind>(Record[Slot++]); |
| 6078 | TypeId.TTRes.SizeM1BitWidth = Record[Slot++]; |
| 6079 | TypeId.TTRes.AlignLog2 = Record[Slot++]; |
| 6080 | TypeId.TTRes.SizeM1 = Record[Slot++]; |
| 6081 | TypeId.TTRes.BitMask = Record[Slot++]; |
| 6082 | TypeId.TTRes.InlineBits = Record[Slot++]; |
| 6083 | |
| 6084 | while (Slot < Record.size()) |
| 6085 | parseWholeProgramDevirtResolution(Record, Strtab, Slot, TypeId); |
| 6086 | } |
| 6087 | |
| 6088 | std::vector<FunctionSummary::ParamAccess> |
| 6089 | ModuleSummaryIndexBitcodeReader::parseParamAccesses(ArrayRef<uint64_t> Record) { |
| 6090 | auto ReadRange = [&]() { |
| 6091 | APInt Lower(FunctionSummary::ParamAccess::RangeWidth, |
| 6092 | BitcodeReader::decodeSignRotatedValue(Record.front())); |
| 6093 | Record = Record.drop_front(); |
| 6094 | APInt Upper(FunctionSummary::ParamAccess::RangeWidth, |
| 6095 | BitcodeReader::decodeSignRotatedValue(Record.front())); |
| 6096 | Record = Record.drop_front(); |
| 6097 | ConstantRange Range{Lower, Upper}; |
| 6098 | assert(!Range.isFullSet())(static_cast <bool> (!Range.isFullSet()) ? void (0) : __assert_fail ("!Range.isFullSet()", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6098, __extension__ __PRETTY_FUNCTION__)); |
| 6099 | assert(!Range.isUpperSignWrapped())(static_cast <bool> (!Range.isUpperSignWrapped()) ? void (0) : __assert_fail ("!Range.isUpperSignWrapped()", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6099, __extension__ __PRETTY_FUNCTION__)); |
| 6100 | return Range; |
| 6101 | }; |
| 6102 | |
| 6103 | std::vector<FunctionSummary::ParamAccess> PendingParamAccesses; |
| 6104 | while (!Record.empty()) { |
| 6105 | PendingParamAccesses.emplace_back(); |
| 6106 | FunctionSummary::ParamAccess &ParamAccess = PendingParamAccesses.back(); |
| 6107 | ParamAccess.ParamNo = Record.front(); |
| 6108 | Record = Record.drop_front(); |
| 6109 | ParamAccess.Use = ReadRange(); |
| 6110 | ParamAccess.Calls.resize(Record.front()); |
| 6111 | Record = Record.drop_front(); |
| 6112 | for (auto &Call : ParamAccess.Calls) { |
| 6113 | Call.ParamNo = Record.front(); |
| 6114 | Record = Record.drop_front(); |
| 6115 | Call.Callee = getValueInfoFromValueId(Record.front()).first; |
| 6116 | Record = Record.drop_front(); |
| 6117 | Call.Offsets = ReadRange(); |
| 6118 | } |
| 6119 | } |
| 6120 | return PendingParamAccesses; |
| 6121 | } |
| 6122 | |
| 6123 | void ModuleSummaryIndexBitcodeReader::parseTypeIdCompatibleVtableInfo( |
| 6124 | ArrayRef<uint64_t> Record, size_t &Slot, |
| 6125 | TypeIdCompatibleVtableInfo &TypeId) { |
| 6126 | uint64_t Offset = Record[Slot++]; |
| 6127 | ValueInfo Callee = getValueInfoFromValueId(Record[Slot++]).first; |
| 6128 | TypeId.push_back({Offset, Callee}); |
| 6129 | } |
| 6130 | |
| 6131 | void ModuleSummaryIndexBitcodeReader::parseTypeIdCompatibleVtableSummaryRecord( |
| 6132 | ArrayRef<uint64_t> Record) { |
| 6133 | size_t Slot = 0; |
| 6134 | TypeIdCompatibleVtableInfo &TypeId = |
| 6135 | TheIndex.getOrInsertTypeIdCompatibleVtableSummary( |
| 6136 | {Strtab.data() + Record[Slot], |
| 6137 | static_cast<size_t>(Record[Slot + 1])}); |
| 6138 | Slot += 2; |
| 6139 | |
| 6140 | while (Slot < Record.size()) |
| 6141 | parseTypeIdCompatibleVtableInfo(Record, Slot, TypeId); |
| 6142 | } |
| 6143 | |
| 6144 | static void setSpecialRefs(std::vector<ValueInfo> &Refs, unsigned ROCnt, |
| 6145 | unsigned WOCnt) { |
| 6146 | // Readonly and writeonly refs are in the end of the refs list. |
| 6147 | assert(ROCnt + WOCnt <= Refs.size())(static_cast <bool> (ROCnt + WOCnt <= Refs.size()) ? void (0) : __assert_fail ("ROCnt + WOCnt <= Refs.size()", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6147, __extension__ __PRETTY_FUNCTION__)); |
| 6148 | unsigned FirstWORef = Refs.size() - WOCnt; |
| 6149 | unsigned RefNo = FirstWORef - ROCnt; |
| 6150 | for (; RefNo < FirstWORef; ++RefNo) |
| 6151 | Refs[RefNo].setReadOnly(); |
| 6152 | for (; RefNo < Refs.size(); ++RefNo) |
| 6153 | Refs[RefNo].setWriteOnly(); |
| 6154 | } |
| 6155 | |
| 6156 | // Eagerly parse the entire summary block. This populates the GlobalValueSummary |
| 6157 | // objects in the index. |
| 6158 | Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) { |
| 6159 | if (Error Err = Stream.EnterSubBlock(ID)) |
| 6160 | return Err; |
| 6161 | SmallVector<uint64_t, 64> Record; |
| 6162 | |
| 6163 | // Parse version |
| 6164 | { |
| 6165 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 6166 | if (!MaybeEntry) |
| 6167 | return MaybeEntry.takeError(); |
| 6168 | BitstreamEntry Entry = MaybeEntry.get(); |
| 6169 | |
| 6170 | if (Entry.Kind != BitstreamEntry::Record) |
| 6171 | return error("Invalid Summary Block: record for version expected"); |
| 6172 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 6173 | if (!MaybeRecord) |
| 6174 | return MaybeRecord.takeError(); |
| 6175 | if (MaybeRecord.get() != bitc::FS_VERSION) |
| 6176 | return error("Invalid Summary Block: version expected"); |
| 6177 | } |
| 6178 | const uint64_t Version = Record[0]; |
| 6179 | const bool IsOldProfileFormat = Version == 1; |
| 6180 | if (Version < 1 || Version > ModuleSummaryIndex::BitcodeSummaryVersion) |
| 6181 | return error("Invalid summary version " + Twine(Version) + |
| 6182 | ". Version should be in the range [1-" + |
| 6183 | Twine(ModuleSummaryIndex::BitcodeSummaryVersion) + |
| 6184 | "]."); |
| 6185 | Record.clear(); |
| 6186 | |
| 6187 | // Keep around the last seen summary to be used when we see an optional |
| 6188 | // "OriginalName" attachement. |
| 6189 | GlobalValueSummary *LastSeenSummary = nullptr; |
| 6190 | GlobalValue::GUID LastSeenGUID = 0; |
| 6191 | |
| 6192 | // We can expect to see any number of type ID information records before |
| 6193 | // each function summary records; these variables store the information |
| 6194 | // collected so far so that it can be used to create the summary object. |
| 6195 | std::vector<GlobalValue::GUID> PendingTypeTests; |
| 6196 | std::vector<FunctionSummary::VFuncId> PendingTypeTestAssumeVCalls, |
| 6197 | PendingTypeCheckedLoadVCalls; |
| 6198 | std::vector<FunctionSummary::ConstVCall> PendingTypeTestAssumeConstVCalls, |
| 6199 | PendingTypeCheckedLoadConstVCalls; |
| 6200 | std::vector<FunctionSummary::ParamAccess> PendingParamAccesses; |
| 6201 | |
| 6202 | while (true) { |
| 6203 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 6204 | if (!MaybeEntry) |
| 6205 | return MaybeEntry.takeError(); |
| 6206 | BitstreamEntry Entry = MaybeEntry.get(); |
| 6207 | |
| 6208 | switch (Entry.Kind) { |
| 6209 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 6210 | case BitstreamEntry::Error: |
| 6211 | return error("Malformed block"); |
| 6212 | case BitstreamEntry::EndBlock: |
| 6213 | return Error::success(); |
| 6214 | case BitstreamEntry::Record: |
| 6215 | // The interesting case. |
| 6216 | break; |
| 6217 | } |
| 6218 | |
| 6219 | // Read a record. The record format depends on whether this |
| 6220 | // is a per-module index or a combined index file. In the per-module |
| 6221 | // case the records contain the associated value's ID for correlation |
| 6222 | // with VST entries. In the combined index the correlation is done |
| 6223 | // via the bitcode offset of the summary records (which were saved |
| 6224 | // in the combined index VST entries). The records also contain |
| 6225 | // information used for ThinLTO renaming and importing. |
| 6226 | Record.clear(); |
| 6227 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); |
| 6228 | if (!MaybeBitCode) |
| 6229 | return MaybeBitCode.takeError(); |
| 6230 | switch (unsigned BitCode = MaybeBitCode.get()) { |
| 6231 | default: // Default behavior: ignore. |
| 6232 | break; |
| 6233 | case bitc::FS_FLAGS: { // [flags] |
| 6234 | TheIndex.setFlags(Record[0]); |
| 6235 | break; |
| 6236 | } |
| 6237 | case bitc::FS_VALUE_GUID: { // [valueid, refguid] |
| 6238 | uint64_t ValueID = Record[0]; |
| 6239 | GlobalValue::GUID RefGUID = Record[1]; |
| 6240 | ValueIdToValueInfoMap[ValueID] = |
| 6241 | std::make_pair(TheIndex.getOrInsertValueInfo(RefGUID), RefGUID); |
| 6242 | break; |
| 6243 | } |
| 6244 | // FS_PERMODULE: [valueid, flags, instcount, fflags, numrefs, |
| 6245 | // numrefs x valueid, n x (valueid)] |
| 6246 | // FS_PERMODULE_PROFILE: [valueid, flags, instcount, fflags, numrefs, |
| 6247 | // numrefs x valueid, |
| 6248 | // n x (valueid, hotness)] |
| 6249 | // FS_PERMODULE_RELBF: [valueid, flags, instcount, fflags, numrefs, |
| 6250 | // numrefs x valueid, |
| 6251 | // n x (valueid, relblockfreq)] |
| 6252 | case bitc::FS_PERMODULE: |
| 6253 | case bitc::FS_PERMODULE_RELBF: |
| 6254 | case bitc::FS_PERMODULE_PROFILE: { |
| 6255 | unsigned ValueID = Record[0]; |
| 6256 | uint64_t RawFlags = Record[1]; |
| 6257 | unsigned InstCount = Record[2]; |
| 6258 | uint64_t RawFunFlags = 0; |
| 6259 | unsigned NumRefs = Record[3]; |
| 6260 | unsigned NumRORefs = 0, NumWORefs = 0; |
| 6261 | int RefListStartIndex = 4; |
| 6262 | if (Version >= 4) { |
| 6263 | RawFunFlags = Record[3]; |
| 6264 | NumRefs = Record[4]; |
| 6265 | RefListStartIndex = 5; |
| 6266 | if (Version >= 5) { |
| 6267 | NumRORefs = Record[5]; |
| 6268 | RefListStartIndex = 6; |
| 6269 | if (Version >= 7) { |
| 6270 | NumWORefs = Record[6]; |
| 6271 | RefListStartIndex = 7; |
| 6272 | } |
| 6273 | } |
| 6274 | } |
| 6275 | |
| 6276 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); |
| 6277 | // The module path string ref set in the summary must be owned by the |
| 6278 | // index's module string table. Since we don't have a module path |
| 6279 | // string table section in the per-module index, we create a single |
| 6280 | // module path string table entry with an empty (0) ID to take |
| 6281 | // ownership. |
| 6282 | int CallGraphEdgeStartIndex = RefListStartIndex + NumRefs; |
| 6283 | assert(Record.size() >= RefListStartIndex + NumRefs &&(static_cast <bool> (Record.size() >= RefListStartIndex + NumRefs && "Record size inconsistent with number of references" ) ? void (0) : __assert_fail ("Record.size() >= RefListStartIndex + NumRefs && \"Record size inconsistent with number of references\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6284, __extension__ __PRETTY_FUNCTION__)) |
| 6284 | "Record size inconsistent with number of references")(static_cast <bool> (Record.size() >= RefListStartIndex + NumRefs && "Record size inconsistent with number of references" ) ? void (0) : __assert_fail ("Record.size() >= RefListStartIndex + NumRefs && \"Record size inconsistent with number of references\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6284, __extension__ __PRETTY_FUNCTION__)); |
| 6285 | std::vector<ValueInfo> Refs = makeRefList( |
| 6286 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); |
| 6287 | bool HasProfile = (BitCode == bitc::FS_PERMODULE_PROFILE); |
| 6288 | bool HasRelBF = (BitCode == bitc::FS_PERMODULE_RELBF); |
| 6289 | std::vector<FunctionSummary::EdgeTy> Calls = makeCallList( |
| 6290 | ArrayRef<uint64_t>(Record).slice(CallGraphEdgeStartIndex), |
| 6291 | IsOldProfileFormat, HasProfile, HasRelBF); |
| 6292 | setSpecialRefs(Refs, NumRORefs, NumWORefs); |
| 6293 | auto FS = std::make_unique<FunctionSummary>( |
| 6294 | Flags, InstCount, getDecodedFFlags(RawFunFlags), /*EntryCount=*/0, |
| 6295 | std::move(Refs), std::move(Calls), std::move(PendingTypeTests), |
| 6296 | std::move(PendingTypeTestAssumeVCalls), |
| 6297 | std::move(PendingTypeCheckedLoadVCalls), |
| 6298 | std::move(PendingTypeTestAssumeConstVCalls), |
| 6299 | std::move(PendingTypeCheckedLoadConstVCalls), |
| 6300 | std::move(PendingParamAccesses)); |
| 6301 | auto VIAndOriginalGUID = getValueInfoFromValueId(ValueID); |
| 6302 | FS->setModulePath(getThisModule()->first()); |
| 6303 | FS->setOriginalName(VIAndOriginalGUID.second); |
| 6304 | TheIndex.addGlobalValueSummary(VIAndOriginalGUID.first, std::move(FS)); |
| 6305 | break; |
| 6306 | } |
| 6307 | // FS_ALIAS: [valueid, flags, valueid] |
| 6308 | // Aliases must be emitted (and parsed) after all FS_PERMODULE entries, as |
| 6309 | // they expect all aliasee summaries to be available. |
| 6310 | case bitc::FS_ALIAS: { |
| 6311 | unsigned ValueID = Record[0]; |
| 6312 | uint64_t RawFlags = Record[1]; |
| 6313 | unsigned AliaseeID = Record[2]; |
| 6314 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); |
| 6315 | auto AS = std::make_unique<AliasSummary>(Flags); |
| 6316 | // The module path string ref set in the summary must be owned by the |
| 6317 | // index's module string table. Since we don't have a module path |
| 6318 | // string table section in the per-module index, we create a single |
| 6319 | // module path string table entry with an empty (0) ID to take |
| 6320 | // ownership. |
| 6321 | AS->setModulePath(getThisModule()->first()); |
| 6322 | |
| 6323 | auto AliaseeVI = getValueInfoFromValueId(AliaseeID).first; |
| 6324 | auto AliaseeInModule = TheIndex.findSummaryInModule(AliaseeVI, ModulePath); |
| 6325 | if (!AliaseeInModule) |
| 6326 | return error("Alias expects aliasee summary to be parsed"); |
| 6327 | AS->setAliasee(AliaseeVI, AliaseeInModule); |
| 6328 | |
| 6329 | auto GUID = getValueInfoFromValueId(ValueID); |
| 6330 | AS->setOriginalName(GUID.second); |
| 6331 | TheIndex.addGlobalValueSummary(GUID.first, std::move(AS)); |
| 6332 | break; |
| 6333 | } |
| 6334 | // FS_PERMODULE_GLOBALVAR_INIT_REFS: [valueid, flags, varflags, n x valueid] |
| 6335 | case bitc::FS_PERMODULE_GLOBALVAR_INIT_REFS: { |
| 6336 | unsigned ValueID = Record[0]; |
| 6337 | uint64_t RawFlags = Record[1]; |
| 6338 | unsigned RefArrayStart = 2; |
| 6339 | GlobalVarSummary::GVarFlags GVF(/* ReadOnly */ false, |
| 6340 | /* WriteOnly */ false, |
| 6341 | /* Constant */ false, |
| 6342 | GlobalObject::VCallVisibilityPublic); |
| 6343 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); |
| 6344 | if (Version >= 5) { |
| 6345 | GVF = getDecodedGVarFlags(Record[2]); |
| 6346 | RefArrayStart = 3; |
| 6347 | } |
| 6348 | std::vector<ValueInfo> Refs = |
| 6349 | makeRefList(ArrayRef<uint64_t>(Record).slice(RefArrayStart)); |
| 6350 | auto FS = |
| 6351 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); |
| 6352 | FS->setModulePath(getThisModule()->first()); |
| 6353 | auto GUID = getValueInfoFromValueId(ValueID); |
| 6354 | FS->setOriginalName(GUID.second); |
| 6355 | TheIndex.addGlobalValueSummary(GUID.first, std::move(FS)); |
| 6356 | break; |
| 6357 | } |
| 6358 | // FS_PERMODULE_VTABLE_GLOBALVAR_INIT_REFS: [valueid, flags, varflags, |
| 6359 | // numrefs, numrefs x valueid, |
| 6360 | // n x (valueid, offset)] |
| 6361 | case bitc::FS_PERMODULE_VTABLE_GLOBALVAR_INIT_REFS: { |
| 6362 | unsigned ValueID = Record[0]; |
| 6363 | uint64_t RawFlags = Record[1]; |
| 6364 | GlobalVarSummary::GVarFlags GVF = getDecodedGVarFlags(Record[2]); |
| 6365 | unsigned NumRefs = Record[3]; |
| 6366 | unsigned RefListStartIndex = 4; |
| 6367 | unsigned VTableListStartIndex = RefListStartIndex + NumRefs; |
| 6368 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); |
| 6369 | std::vector<ValueInfo> Refs = makeRefList( |
| 6370 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); |
| 6371 | VTableFuncList VTableFuncs; |
| 6372 | for (unsigned I = VTableListStartIndex, E = Record.size(); I != E; ++I) { |
| 6373 | ValueInfo Callee = getValueInfoFromValueId(Record[I]).first; |
| 6374 | uint64_t Offset = Record[++I]; |
| 6375 | VTableFuncs.push_back({Callee, Offset}); |
| 6376 | } |
| 6377 | auto VS = |
| 6378 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); |
| 6379 | VS->setModulePath(getThisModule()->first()); |
| 6380 | VS->setVTableFuncs(VTableFuncs); |
| 6381 | auto GUID = getValueInfoFromValueId(ValueID); |
| 6382 | VS->setOriginalName(GUID.second); |
| 6383 | TheIndex.addGlobalValueSummary(GUID.first, std::move(VS)); |
| 6384 | break; |
| 6385 | } |
| 6386 | // FS_COMBINED: [valueid, modid, flags, instcount, fflags, numrefs, |
| 6387 | // numrefs x valueid, n x (valueid)] |
| 6388 | // FS_COMBINED_PROFILE: [valueid, modid, flags, instcount, fflags, numrefs, |
| 6389 | // numrefs x valueid, n x (valueid, hotness)] |
| 6390 | case bitc::FS_COMBINED: |
| 6391 | case bitc::FS_COMBINED_PROFILE: { |
| 6392 | unsigned ValueID = Record[0]; |
| 6393 | uint64_t ModuleId = Record[1]; |
| 6394 | uint64_t RawFlags = Record[2]; |
| 6395 | unsigned InstCount = Record[3]; |
| 6396 | uint64_t RawFunFlags = 0; |
| 6397 | uint64_t EntryCount = 0; |
| 6398 | unsigned NumRefs = Record[4]; |
| 6399 | unsigned NumRORefs = 0, NumWORefs = 0; |
| 6400 | int RefListStartIndex = 5; |
| 6401 | |
| 6402 | if (Version >= 4) { |
| 6403 | RawFunFlags = Record[4]; |
| 6404 | RefListStartIndex = 6; |
| 6405 | size_t NumRefsIndex = 5; |
| 6406 | if (Version >= 5) { |
| 6407 | unsigned NumRORefsOffset = 1; |
| 6408 | RefListStartIndex = 7; |
| 6409 | if (Version >= 6) { |
| 6410 | NumRefsIndex = 6; |
| 6411 | EntryCount = Record[5]; |
| 6412 | RefListStartIndex = 8; |
| 6413 | if (Version >= 7) { |
| 6414 | RefListStartIndex = 9; |
| 6415 | NumWORefs = Record[8]; |
| 6416 | NumRORefsOffset = 2; |
| 6417 | } |
| 6418 | } |
| 6419 | NumRORefs = Record[RefListStartIndex - NumRORefsOffset]; |
| 6420 | } |
| 6421 | NumRefs = Record[NumRefsIndex]; |
| 6422 | } |
| 6423 | |
| 6424 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); |
| 6425 | int CallGraphEdgeStartIndex = RefListStartIndex + NumRefs; |
| 6426 | assert(Record.size() >= RefListStartIndex + NumRefs &&(static_cast <bool> (Record.size() >= RefListStartIndex + NumRefs && "Record size inconsistent with number of references" ) ? void (0) : __assert_fail ("Record.size() >= RefListStartIndex + NumRefs && \"Record size inconsistent with number of references\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6427, __extension__ __PRETTY_FUNCTION__)) |
| 6427 | "Record size inconsistent with number of references")(static_cast <bool> (Record.size() >= RefListStartIndex + NumRefs && "Record size inconsistent with number of references" ) ? void (0) : __assert_fail ("Record.size() >= RefListStartIndex + NumRefs && \"Record size inconsistent with number of references\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6427, __extension__ __PRETTY_FUNCTION__)); |
| 6428 | std::vector<ValueInfo> Refs = makeRefList( |
| 6429 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); |
| 6430 | bool HasProfile = (BitCode == bitc::FS_COMBINED_PROFILE); |
| 6431 | std::vector<FunctionSummary::EdgeTy> Edges = makeCallList( |
| 6432 | ArrayRef<uint64_t>(Record).slice(CallGraphEdgeStartIndex), |
| 6433 | IsOldProfileFormat, HasProfile, false); |
| 6434 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; |
| 6435 | setSpecialRefs(Refs, NumRORefs, NumWORefs); |
| 6436 | auto FS = std::make_unique<FunctionSummary>( |
| 6437 | Flags, InstCount, getDecodedFFlags(RawFunFlags), EntryCount, |
| 6438 | std::move(Refs), std::move(Edges), std::move(PendingTypeTests), |
| 6439 | std::move(PendingTypeTestAssumeVCalls), |
| 6440 | std::move(PendingTypeCheckedLoadVCalls), |
| 6441 | std::move(PendingTypeTestAssumeConstVCalls), |
| 6442 | std::move(PendingTypeCheckedLoadConstVCalls), |
| 6443 | std::move(PendingParamAccesses)); |
| 6444 | LastSeenSummary = FS.get(); |
| 6445 | LastSeenGUID = VI.getGUID(); |
| 6446 | FS->setModulePath(ModuleIdMap[ModuleId]); |
| 6447 | TheIndex.addGlobalValueSummary(VI, std::move(FS)); |
| 6448 | break; |
| 6449 | } |
| 6450 | // FS_COMBINED_ALIAS: [valueid, modid, flags, valueid] |
| 6451 | // Aliases must be emitted (and parsed) after all FS_COMBINED entries, as |
| 6452 | // they expect all aliasee summaries to be available. |
| 6453 | case bitc::FS_COMBINED_ALIAS: { |
| 6454 | unsigned ValueID = Record[0]; |
| 6455 | uint64_t ModuleId = Record[1]; |
| 6456 | uint64_t RawFlags = Record[2]; |
| 6457 | unsigned AliaseeValueId = Record[3]; |
| 6458 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); |
| 6459 | auto AS = std::make_unique<AliasSummary>(Flags); |
| 6460 | LastSeenSummary = AS.get(); |
| 6461 | AS->setModulePath(ModuleIdMap[ModuleId]); |
| 6462 | |
| 6463 | auto AliaseeVI = getValueInfoFromValueId(AliaseeValueId).first; |
| 6464 | auto AliaseeInModule = TheIndex.findSummaryInModule(AliaseeVI, AS->modulePath()); |
| 6465 | AS->setAliasee(AliaseeVI, AliaseeInModule); |
| 6466 | |
| 6467 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; |
| 6468 | LastSeenGUID = VI.getGUID(); |
| 6469 | TheIndex.addGlobalValueSummary(VI, std::move(AS)); |
| 6470 | break; |
| 6471 | } |
| 6472 | // FS_COMBINED_GLOBALVAR_INIT_REFS: [valueid, modid, flags, n x valueid] |
| 6473 | case bitc::FS_COMBINED_GLOBALVAR_INIT_REFS: { |
| 6474 | unsigned ValueID = Record[0]; |
| 6475 | uint64_t ModuleId = Record[1]; |
| 6476 | uint64_t RawFlags = Record[2]; |
| 6477 | unsigned RefArrayStart = 3; |
| 6478 | GlobalVarSummary::GVarFlags GVF(/* ReadOnly */ false, |
| 6479 | /* WriteOnly */ false, |
| 6480 | /* Constant */ false, |
| 6481 | GlobalObject::VCallVisibilityPublic); |
| 6482 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); |
| 6483 | if (Version >= 5) { |
| 6484 | GVF = getDecodedGVarFlags(Record[3]); |
| 6485 | RefArrayStart = 4; |
| 6486 | } |
| 6487 | std::vector<ValueInfo> Refs = |
| 6488 | makeRefList(ArrayRef<uint64_t>(Record).slice(RefArrayStart)); |
| 6489 | auto FS = |
| 6490 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); |
| 6491 | LastSeenSummary = FS.get(); |
| 6492 | FS->setModulePath(ModuleIdMap[ModuleId]); |
| 6493 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; |
| 6494 | LastSeenGUID = VI.getGUID(); |
| 6495 | TheIndex.addGlobalValueSummary(VI, std::move(FS)); |
| 6496 | break; |
| 6497 | } |
| 6498 | // FS_COMBINED_ORIGINAL_NAME: [original_name] |
| 6499 | case bitc::FS_COMBINED_ORIGINAL_NAME: { |
| 6500 | uint64_t OriginalName = Record[0]; |
| 6501 | if (!LastSeenSummary) |
| 6502 | return error("Name attachment that does not follow a combined record"); |
| 6503 | LastSeenSummary->setOriginalName(OriginalName); |
| 6504 | TheIndex.addOriginalName(LastSeenGUID, OriginalName); |
| 6505 | // Reset the LastSeenSummary |
| 6506 | LastSeenSummary = nullptr; |
| 6507 | LastSeenGUID = 0; |
| 6508 | break; |
| 6509 | } |
| 6510 | case bitc::FS_TYPE_TESTS: |
| 6511 | assert(PendingTypeTests.empty())(static_cast <bool> (PendingTypeTests.empty()) ? void ( 0) : __assert_fail ("PendingTypeTests.empty()", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6511, __extension__ __PRETTY_FUNCTION__)); |
| 6512 | llvm::append_range(PendingTypeTests, Record); |
| 6513 | break; |
| 6514 | |
| 6515 | case bitc::FS_TYPE_TEST_ASSUME_VCALLS: |
| 6516 | assert(PendingTypeTestAssumeVCalls.empty())(static_cast <bool> (PendingTypeTestAssumeVCalls.empty( )) ? void (0) : __assert_fail ("PendingTypeTestAssumeVCalls.empty()" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6516, __extension__ __PRETTY_FUNCTION__)); |
| 6517 | for (unsigned I = 0; I != Record.size(); I += 2) |
| 6518 | PendingTypeTestAssumeVCalls.push_back({Record[I], Record[I+1]}); |
| 6519 | break; |
| 6520 | |
| 6521 | case bitc::FS_TYPE_CHECKED_LOAD_VCALLS: |
| 6522 | assert(PendingTypeCheckedLoadVCalls.empty())(static_cast <bool> (PendingTypeCheckedLoadVCalls.empty ()) ? void (0) : __assert_fail ("PendingTypeCheckedLoadVCalls.empty()" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6522, __extension__ __PRETTY_FUNCTION__)); |
| 6523 | for (unsigned I = 0; I != Record.size(); I += 2) |
| 6524 | PendingTypeCheckedLoadVCalls.push_back({Record[I], Record[I+1]}); |
| 6525 | break; |
| 6526 | |
| 6527 | case bitc::FS_TYPE_TEST_ASSUME_CONST_VCALL: |
| 6528 | PendingTypeTestAssumeConstVCalls.push_back( |
| 6529 | {{Record[0], Record[1]}, {Record.begin() + 2, Record.end()}}); |
| 6530 | break; |
| 6531 | |
| 6532 | case bitc::FS_TYPE_CHECKED_LOAD_CONST_VCALL: |
| 6533 | PendingTypeCheckedLoadConstVCalls.push_back( |
| 6534 | {{Record[0], Record[1]}, {Record.begin() + 2, Record.end()}}); |
| 6535 | break; |
| 6536 | |
| 6537 | case bitc::FS_CFI_FUNCTION_DEFS: { |
| 6538 | std::set<std::string> &CfiFunctionDefs = TheIndex.cfiFunctionDefs(); |
| 6539 | for (unsigned I = 0; I != Record.size(); I += 2) |
| 6540 | CfiFunctionDefs.insert( |
| 6541 | {Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])}); |
| 6542 | break; |
| 6543 | } |
| 6544 | |
| 6545 | case bitc::FS_CFI_FUNCTION_DECLS: { |
| 6546 | std::set<std::string> &CfiFunctionDecls = TheIndex.cfiFunctionDecls(); |
| 6547 | for (unsigned I = 0; I != Record.size(); I += 2) |
| 6548 | CfiFunctionDecls.insert( |
| 6549 | {Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])}); |
| 6550 | break; |
| 6551 | } |
| 6552 | |
| 6553 | case bitc::FS_TYPE_ID: |
| 6554 | parseTypeIdSummaryRecord(Record, Strtab, TheIndex); |
| 6555 | break; |
| 6556 | |
| 6557 | case bitc::FS_TYPE_ID_METADATA: |
| 6558 | parseTypeIdCompatibleVtableSummaryRecord(Record); |
| 6559 | break; |
| 6560 | |
| 6561 | case bitc::FS_BLOCK_COUNT: |
| 6562 | TheIndex.addBlockCount(Record[0]); |
| 6563 | break; |
| 6564 | |
| 6565 | case bitc::FS_PARAM_ACCESS: { |
| 6566 | PendingParamAccesses = parseParamAccesses(Record); |
| 6567 | break; |
| 6568 | } |
| 6569 | } |
| 6570 | } |
| 6571 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6571); |
| 6572 | } |
| 6573 | |
| 6574 | // Parse the module string table block into the Index. |
| 6575 | // This populates the ModulePathStringTable map in the index. |
| 6576 | Error ModuleSummaryIndexBitcodeReader::parseModuleStringTable() { |
| 6577 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_STRTAB_BLOCK_ID)) |
| 6578 | return Err; |
| 6579 | |
| 6580 | SmallVector<uint64_t, 64> Record; |
| 6581 | |
| 6582 | SmallString<128> ModulePath; |
| 6583 | ModuleSummaryIndex::ModuleInfo *LastSeenModule = nullptr; |
| 6584 | |
| 6585 | while (true) { |
| 6586 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 6587 | if (!MaybeEntry) |
| 6588 | return MaybeEntry.takeError(); |
| 6589 | BitstreamEntry Entry = MaybeEntry.get(); |
| 6590 | |
| 6591 | switch (Entry.Kind) { |
| 6592 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 6593 | case BitstreamEntry::Error: |
| 6594 | return error("Malformed block"); |
| 6595 | case BitstreamEntry::EndBlock: |
| 6596 | return Error::success(); |
| 6597 | case BitstreamEntry::Record: |
| 6598 | // The interesting case. |
| 6599 | break; |
| 6600 | } |
| 6601 | |
| 6602 | Record.clear(); |
| 6603 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); |
| 6604 | if (!MaybeRecord) |
| 6605 | return MaybeRecord.takeError(); |
| 6606 | switch (MaybeRecord.get()) { |
| 6607 | default: // Default behavior: ignore. |
| 6608 | break; |
| 6609 | case bitc::MST_CODE_ENTRY: { |
| 6610 | // MST_ENTRY: [modid, namechar x N] |
| 6611 | uint64_t ModuleId = Record[0]; |
| 6612 | |
| 6613 | if (convertToString(Record, 1, ModulePath)) |
| 6614 | return error("Invalid record"); |
| 6615 | |
| 6616 | LastSeenModule = TheIndex.addModule(ModulePath, ModuleId); |
| 6617 | ModuleIdMap[ModuleId] = LastSeenModule->first(); |
| 6618 | |
| 6619 | ModulePath.clear(); |
| 6620 | break; |
| 6621 | } |
| 6622 | /// MST_CODE_HASH: [5*i32] |
| 6623 | case bitc::MST_CODE_HASH: { |
| 6624 | if (Record.size() != 5) |
| 6625 | return error("Invalid hash length " + Twine(Record.size()).str()); |
| 6626 | if (!LastSeenModule) |
| 6627 | return error("Invalid hash that does not follow a module path"); |
| 6628 | int Pos = 0; |
| 6629 | for (auto &Val : Record) { |
| 6630 | assert(!(Val >> 32) && "Unexpected high bits set")(static_cast <bool> (!(Val >> 32) && "Unexpected high bits set" ) ? void (0) : __assert_fail ("!(Val >> 32) && \"Unexpected high bits set\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6630, __extension__ __PRETTY_FUNCTION__)); |
| 6631 | LastSeenModule->second.second[Pos++] = Val; |
| 6632 | } |
| 6633 | // Reset LastSeenModule to avoid overriding the hash unexpectedly. |
| 6634 | LastSeenModule = nullptr; |
| 6635 | break; |
| 6636 | } |
| 6637 | } |
| 6638 | } |
| 6639 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6639); |
| 6640 | } |
| 6641 | |
| 6642 | namespace { |
| 6643 | |
| 6644 | // FIXME: This class is only here to support the transition to llvm::Error. It |
| 6645 | // will be removed once this transition is complete. Clients should prefer to |
| 6646 | // deal with the Error value directly, rather than converting to error_code. |
| 6647 | class BitcodeErrorCategoryType : public std::error_category { |
| 6648 | const char *name() const noexcept override { |
| 6649 | return "llvm.bitcode"; |
| 6650 | } |
| 6651 | |
| 6652 | std::string message(int IE) const override { |
| 6653 | BitcodeError E = static_cast<BitcodeError>(IE); |
| 6654 | switch (E) { |
| 6655 | case BitcodeError::CorruptedBitcode: |
| 6656 | return "Corrupted bitcode"; |
| 6657 | } |
| 6658 | llvm_unreachable("Unknown error type!")::llvm::llvm_unreachable_internal("Unknown error type!", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6658); |
| 6659 | } |
| 6660 | }; |
| 6661 | |
| 6662 | } // end anonymous namespace |
| 6663 | |
| 6664 | static ManagedStatic<BitcodeErrorCategoryType> ErrorCategory; |
| 6665 | |
| 6666 | const std::error_category &llvm::BitcodeErrorCategory() { |
| 6667 | return *ErrorCategory; |
| 6668 | } |
| 6669 | |
| 6670 | static Expected<StringRef> readBlobInRecord(BitstreamCursor &Stream, |
| 6671 | unsigned Block, unsigned RecordID) { |
| 6672 | if (Error Err = Stream.EnterSubBlock(Block)) |
| 6673 | return std::move(Err); |
| 6674 | |
| 6675 | StringRef Strtab; |
| 6676 | while (true) { |
| 6677 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); |
| 6678 | if (!MaybeEntry) |
| 6679 | return MaybeEntry.takeError(); |
| 6680 | llvm::BitstreamEntry Entry = MaybeEntry.get(); |
| 6681 | |
| 6682 | switch (Entry.Kind) { |
| 6683 | case BitstreamEntry::EndBlock: |
| 6684 | return Strtab; |
| 6685 | |
| 6686 | case BitstreamEntry::Error: |
| 6687 | return error("Malformed block"); |
| 6688 | |
| 6689 | case BitstreamEntry::SubBlock: |
| 6690 | if (Error Err = Stream.SkipBlock()) |
| 6691 | return std::move(Err); |
| 6692 | break; |
| 6693 | |
| 6694 | case BitstreamEntry::Record: |
| 6695 | StringRef Blob; |
| 6696 | SmallVector<uint64_t, 1> Record; |
| 6697 | Expected<unsigned> MaybeRecord = |
| 6698 | Stream.readRecord(Entry.ID, Record, &Blob); |
| 6699 | if (!MaybeRecord) |
| 6700 | return MaybeRecord.takeError(); |
| 6701 | if (MaybeRecord.get() == RecordID) |
| 6702 | Strtab = Blob; |
| 6703 | break; |
| 6704 | } |
| 6705 | } |
| 6706 | } |
| 6707 | |
| 6708 | //===----------------------------------------------------------------------===// |
| 6709 | // External interface |
| 6710 | //===----------------------------------------------------------------------===// |
| 6711 | |
| 6712 | Expected<std::vector<BitcodeModule>> |
| 6713 | llvm::getBitcodeModuleList(MemoryBufferRef Buffer) { |
| 6714 | auto FOrErr = getBitcodeFileContents(Buffer); |
| 6715 | if (!FOrErr) |
| 6716 | return FOrErr.takeError(); |
| 6717 | return std::move(FOrErr->Mods); |
| 6718 | } |
| 6719 | |
| 6720 | Expected<BitcodeFileContents> |
| 6721 | llvm::getBitcodeFileContents(MemoryBufferRef Buffer) { |
| 6722 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); |
| 6723 | if (!StreamOrErr) |
| 6724 | return StreamOrErr.takeError(); |
| 6725 | BitstreamCursor &Stream = *StreamOrErr; |
| 6726 | |
| 6727 | BitcodeFileContents F; |
| 6728 | while (true) { |
| 6729 | uint64_t BCBegin = Stream.getCurrentByteNo(); |
| 6730 | |
| 6731 | // We may be consuming bitcode from a client that leaves garbage at the end |
| 6732 | // of the bitcode stream (e.g. Apple's ar tool). If we are close enough to |
| 6733 | // the end that there cannot possibly be another module, stop looking. |
| 6734 | if (BCBegin + 8 >= Stream.getBitcodeBytes().size()) |
| 6735 | return F; |
| 6736 | |
| 6737 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); |
| 6738 | if (!MaybeEntry) |
| 6739 | return MaybeEntry.takeError(); |
| 6740 | llvm::BitstreamEntry Entry = MaybeEntry.get(); |
| 6741 | |
| 6742 | switch (Entry.Kind) { |
| 6743 | case BitstreamEntry::EndBlock: |
| 6744 | case BitstreamEntry::Error: |
| 6745 | return error("Malformed block"); |
| 6746 | |
| 6747 | case BitstreamEntry::SubBlock: { |
| 6748 | uint64_t IdentificationBit = -1ull; |
| 6749 | if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) { |
| 6750 | IdentificationBit = Stream.GetCurrentBitNo() - BCBegin * 8; |
| 6751 | if (Error Err = Stream.SkipBlock()) |
| 6752 | return std::move(Err); |
| 6753 | |
| 6754 | { |
| 6755 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); |
| 6756 | if (!MaybeEntry) |
| 6757 | return MaybeEntry.takeError(); |
| 6758 | Entry = MaybeEntry.get(); |
| 6759 | } |
| 6760 | |
| 6761 | if (Entry.Kind != BitstreamEntry::SubBlock || |
| 6762 | Entry.ID != bitc::MODULE_BLOCK_ID) |
| 6763 | return error("Malformed block"); |
| 6764 | } |
| 6765 | |
| 6766 | if (Entry.ID == bitc::MODULE_BLOCK_ID) { |
| 6767 | uint64_t ModuleBit = Stream.GetCurrentBitNo() - BCBegin * 8; |
| 6768 | if (Error Err = Stream.SkipBlock()) |
| 6769 | return std::move(Err); |
| 6770 | |
| 6771 | F.Mods.push_back({Stream.getBitcodeBytes().slice( |
| 6772 | BCBegin, Stream.getCurrentByteNo() - BCBegin), |
| 6773 | Buffer.getBufferIdentifier(), IdentificationBit, |
| 6774 | ModuleBit}); |
| 6775 | continue; |
| 6776 | } |
| 6777 | |
| 6778 | if (Entry.ID == bitc::STRTAB_BLOCK_ID) { |
| 6779 | Expected<StringRef> Strtab = |
| 6780 | readBlobInRecord(Stream, bitc::STRTAB_BLOCK_ID, bitc::STRTAB_BLOB); |
| 6781 | if (!Strtab) |
| 6782 | return Strtab.takeError(); |
| 6783 | // This string table is used by every preceding bitcode module that does |
| 6784 | // not have its own string table. A bitcode file may have multiple |
| 6785 | // string tables if it was created by binary concatenation, for example |
| 6786 | // with "llvm-cat -b". |
| 6787 | for (auto I = F.Mods.rbegin(), E = F.Mods.rend(); I != E; ++I) { |
| 6788 | if (!I->Strtab.empty()) |
| 6789 | break; |
| 6790 | I->Strtab = *Strtab; |
| 6791 | } |
| 6792 | // Similarly, the string table is used by every preceding symbol table; |
| 6793 | // normally there will be just one unless the bitcode file was created |
| 6794 | // by binary concatenation. |
| 6795 | if (!F.Symtab.empty() && F.StrtabForSymtab.empty()) |
| 6796 | F.StrtabForSymtab = *Strtab; |
| 6797 | continue; |
| 6798 | } |
| 6799 | |
| 6800 | if (Entry.ID == bitc::SYMTAB_BLOCK_ID) { |
| 6801 | Expected<StringRef> SymtabOrErr = |
| 6802 | readBlobInRecord(Stream, bitc::SYMTAB_BLOCK_ID, bitc::SYMTAB_BLOB); |
| 6803 | if (!SymtabOrErr) |
| 6804 | return SymtabOrErr.takeError(); |
| 6805 | |
| 6806 | // We can expect the bitcode file to have multiple symbol tables if it |
| 6807 | // was created by binary concatenation. In that case we silently |
| 6808 | // ignore any subsequent symbol tables, which is fine because this is a |
| 6809 | // low level function. The client is expected to notice that the number |
| 6810 | // of modules in the symbol table does not match the number of modules |
| 6811 | // in the input file and regenerate the symbol table. |
| 6812 | if (F.Symtab.empty()) |
| 6813 | F.Symtab = *SymtabOrErr; |
| 6814 | continue; |
| 6815 | } |
| 6816 | |
| 6817 | if (Error Err = Stream.SkipBlock()) |
| 6818 | return std::move(Err); |
| 6819 | continue; |
| 6820 | } |
| 6821 | case BitstreamEntry::Record: |
| 6822 | if (Expected<unsigned> StreamFailed = Stream.skipRecord(Entry.ID)) |
| 6823 | continue; |
| 6824 | else |
| 6825 | return StreamFailed.takeError(); |
| 6826 | } |
| 6827 | } |
| 6828 | } |
| 6829 | |
| 6830 | /// Get a lazy one-at-time loading module from bitcode. |
| 6831 | /// |
| 6832 | /// This isn't always used in a lazy context. In particular, it's also used by |
| 6833 | /// \a parseModule(). If this is truly lazy, then we need to eagerly pull |
| 6834 | /// in forward-referenced functions from block address references. |
| 6835 | /// |
| 6836 | /// \param[in] MaterializeAll Set to \c true if we should materialize |
| 6837 | /// everything. |
| 6838 | Expected<std::unique_ptr<Module>> |
| 6839 | BitcodeModule::getModuleImpl(LLVMContext &Context, bool MaterializeAll, |
| 6840 | bool ShouldLazyLoadMetadata, bool IsImporting, |
| 6841 | DataLayoutCallbackTy DataLayoutCallback) { |
| 6842 | BitstreamCursor Stream(Buffer); |
| 6843 | |
| 6844 | std::string ProducerIdentification; |
| 6845 | if (IdentificationBit != -1ull) { |
| 6846 | if (Error JumpFailed = Stream.JumpToBit(IdentificationBit)) |
| 6847 | return std::move(JumpFailed); |
| 6848 | Expected<std::string> ProducerIdentificationOrErr = |
| 6849 | readIdentificationBlock(Stream); |
| 6850 | if (!ProducerIdentificationOrErr) |
| 6851 | return ProducerIdentificationOrErr.takeError(); |
| 6852 | |
| 6853 | ProducerIdentification = *ProducerIdentificationOrErr; |
| 6854 | } |
| 6855 | |
| 6856 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) |
| 6857 | return std::move(JumpFailed); |
| 6858 | auto *R = new BitcodeReader(std::move(Stream), Strtab, ProducerIdentification, |
| 6859 | Context); |
| 6860 | |
| 6861 | std::unique_ptr<Module> M = |
| 6862 | std::make_unique<Module>(ModuleIdentifier, Context); |
| 6863 | M->setMaterializer(R); |
| 6864 | |
| 6865 | // Delay parsing Metadata if ShouldLazyLoadMetadata is true. |
| 6866 | if (Error Err = R->parseBitcodeInto(M.get(), ShouldLazyLoadMetadata, |
| 6867 | IsImporting, DataLayoutCallback)) |
| 6868 | return std::move(Err); |
| 6869 | |
| 6870 | if (MaterializeAll) { |
| 6871 | // Read in the entire module, and destroy the BitcodeReader. |
| 6872 | if (Error Err = M->materializeAll()) |
| 6873 | return std::move(Err); |
| 6874 | } else { |
| 6875 | // Resolve forward references from blockaddresses. |
| 6876 | if (Error Err = R->materializeForwardReferencedFunctions()) |
| 6877 | return std::move(Err); |
| 6878 | } |
| 6879 | return std::move(M); |
| 6880 | } |
| 6881 | |
| 6882 | Expected<std::unique_ptr<Module>> |
| 6883 | BitcodeModule::getLazyModule(LLVMContext &Context, bool ShouldLazyLoadMetadata, |
| 6884 | bool IsImporting) { |
| 6885 | return getModuleImpl(Context, false, ShouldLazyLoadMetadata, IsImporting, |
| 6886 | [](StringRef) { return None; }); |
| 6887 | } |
| 6888 | |
| 6889 | // Parse the specified bitcode buffer and merge the index into CombinedIndex. |
| 6890 | // We don't use ModuleIdentifier here because the client may need to control the |
| 6891 | // module path used in the combined summary (e.g. when reading summaries for |
| 6892 | // regular LTO modules). |
| 6893 | Error BitcodeModule::readSummary(ModuleSummaryIndex &CombinedIndex, |
| 6894 | StringRef ModulePath, uint64_t ModuleId) { |
| 6895 | BitstreamCursor Stream(Buffer); |
| 6896 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) |
| 6897 | return JumpFailed; |
| 6898 | |
| 6899 | ModuleSummaryIndexBitcodeReader R(std::move(Stream), Strtab, CombinedIndex, |
| 6900 | ModulePath, ModuleId); |
| 6901 | return R.parseModule(); |
| 6902 | } |
| 6903 | |
| 6904 | // Parse the specified bitcode buffer, returning the function info index. |
| 6905 | Expected<std::unique_ptr<ModuleSummaryIndex>> BitcodeModule::getSummary() { |
| 6906 | BitstreamCursor Stream(Buffer); |
| 6907 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) |
| 6908 | return std::move(JumpFailed); |
| 6909 | |
| 6910 | auto Index = std::make_unique<ModuleSummaryIndex>(/*HaveGVs=*/false); |
| 6911 | ModuleSummaryIndexBitcodeReader R(std::move(Stream), Strtab, *Index, |
| 6912 | ModuleIdentifier, 0); |
| 6913 | |
| 6914 | if (Error Err = R.parseModule()) |
| 6915 | return std::move(Err); |
| 6916 | |
| 6917 | return std::move(Index); |
| 6918 | } |
| 6919 | |
| 6920 | static Expected<bool> getEnableSplitLTOUnitFlag(BitstreamCursor &Stream, |
| 6921 | unsigned ID) { |
| 6922 | if (Error Err = Stream.EnterSubBlock(ID)) |
| 6923 | return std::move(Err); |
| 6924 | SmallVector<uint64_t, 64> Record; |
| 6925 | |
| 6926 | while (true) { |
| 6927 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); |
| 6928 | if (!MaybeEntry) |
| 6929 | return MaybeEntry.takeError(); |
| 6930 | BitstreamEntry Entry = MaybeEntry.get(); |
| 6931 | |
| 6932 | switch (Entry.Kind) { |
| 6933 | case BitstreamEntry::SubBlock: // Handled for us already. |
| 6934 | case BitstreamEntry::Error: |
| 6935 | return error("Malformed block"); |
| 6936 | case BitstreamEntry::EndBlock: |
| 6937 | // If no flags record found, conservatively return true to mimic |
| 6938 | // behavior before this flag was added. |
| 6939 | return true; |
| 6940 | case BitstreamEntry::Record: |
| 6941 | // The interesting case. |
| 6942 | break; |
| 6943 | } |
| 6944 | |
| 6945 | // Look for the FS_FLAGS record. |
| 6946 | Record.clear(); |
| 6947 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); |
| 6948 | if (!MaybeBitCode) |
| 6949 | return MaybeBitCode.takeError(); |
| 6950 | switch (MaybeBitCode.get()) { |
| 6951 | default: // Default behavior: ignore. |
| 6952 | break; |
| 6953 | case bitc::FS_FLAGS: { // [flags] |
| 6954 | uint64_t Flags = Record[0]; |
| 6955 | // Scan flags. |
| 6956 | assert(Flags <= 0x7f && "Unexpected bits in flag")(static_cast <bool> (Flags <= 0x7f && "Unexpected bits in flag" ) ? void (0) : __assert_fail ("Flags <= 0x7f && \"Unexpected bits in flag\"" , "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6956, __extension__ __PRETTY_FUNCTION__)); |
| 6957 | |
| 6958 | return Flags & 0x8; |
| 6959 | } |
| 6960 | } |
| 6961 | } |
| 6962 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-13~++20210613111130+5be314f79ba7/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6962); |
| 6963 | } |
| 6964 | |
| 6965 | // Check if the given bitcode buffer contains a global value summary block. |
| 6966 | Expected<BitcodeLTOInfo> BitcodeModule::getLTOInfo() { |
| 6967 | BitstreamCursor Stream(Buffer); |
| 6968 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) |
| 6969 | return std::move(JumpFailed); |
| 6970 | |
| 6971 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) |
| 6972 | return std::move(Err); |
| 6973 | |
| 6974 | while (true) { |
| 6975 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); |
| 6976 | if (!MaybeEntry) |
| 6977 | return MaybeEntry.takeError(); |
| 6978 | llvm::BitstreamEntry Entry = MaybeEntry.get(); |
| 6979 | |
| 6980 | switch (Entry.Kind) { |
| 6981 | case BitstreamEntry::Error: |
| 6982 | return error("Malformed block"); |
| 6983 | case BitstreamEntry::EndBlock: |
| 6984 | return BitcodeLTOInfo{/*IsThinLTO=*/false, /*HasSummary=*/false, |
| 6985 | /*EnableSplitLTOUnit=*/false}; |
| 6986 | |
| 6987 | case BitstreamEntry::SubBlock: |
| 6988 | if (Entry.ID == bitc::GLOBALVAL_SUMMARY_BLOCK_ID) { |
| 6989 | Expected<bool> EnableSplitLTOUnit = |
| 6990 | getEnableSplitLTOUnitFlag(Stream, Entry.ID); |
| 6991 | if (!EnableSplitLTOUnit) |
| 6992 | return EnableSplitLTOUnit.takeError(); |
| 6993 | return BitcodeLTOInfo{/*IsThinLTO=*/true, /*HasSummary=*/true, |
| 6994 | *EnableSplitLTOUnit}; |
| 6995 | } |
| 6996 | |
| 6997 | if (Entry.ID == bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID) { |
| 6998 | Expected<bool> EnableSplitLTOUnit = |
| 6999 | getEnableSplitLTOUnitFlag(Stream, Entry.ID); |
| 7000 | if (!EnableSplitLTOUnit) |
| 7001 | return EnableSplitLTOUnit.takeError(); |
| 7002 | return BitcodeLTOInfo{/*IsThinLTO=*/false, /*HasSummary=*/true, |
| 7003 | *EnableSplitLTOUnit}; |
| 7004 | } |
| 7005 | |
| 7006 | // Ignore other sub-blocks. |
| 7007 | if (Error Err = Stream.SkipBlock()) |
| 7008 | return std::move(Err); |
| 7009 | continue; |
| 7010 | |
| 7011 | case BitstreamEntry::Record: |
| 7012 | if (Expected<unsigned> StreamFailed = Stream.skipRecord(Entry.ID)) |
| 7013 | continue; |
| 7014 | else |
| 7015 | return StreamFailed.takeError(); |
| 7016 | } |
| 7017 | } |
| 7018 | } |
| 7019 | |
| 7020 | static Expected<BitcodeModule> getSingleModule(MemoryBufferRef Buffer) { |
| 7021 | Expected<std::vector<BitcodeModule>> MsOrErr = getBitcodeModuleList(Buffer); |
| 7022 | if (!MsOrErr) |
| 7023 | return MsOrErr.takeError(); |
| 7024 | |
| 7025 | if (MsOrErr->size() != 1) |
| 7026 | return error("Expected a single module"); |
| 7027 | |
| 7028 | return (*MsOrErr)[0]; |
| 7029 | } |
| 7030 | |
| 7031 | Expected<std::unique_ptr<Module>> |
| 7032 | llvm::getLazyBitcodeModule(MemoryBufferRef Buffer, LLVMContext &Context, |
| 7033 | bool ShouldLazyLoadMetadata, bool IsImporting) { |
| 7034 | Expected<BitcodeModule> BM = getSingleModule(Buffer); |
| 7035 | if (!BM) |
| 7036 | return BM.takeError(); |
| 7037 | |
| 7038 | return BM->getLazyModule(Context, ShouldLazyLoadMetadata, IsImporting); |
| 7039 | } |
| 7040 | |
| 7041 | Expected<std::unique_ptr<Module>> llvm::getOwningLazyBitcodeModule( |
| 7042 | std::unique_ptr<MemoryBuffer> &&Buffer, LLVMContext &Context, |
| 7043 | bool ShouldLazyLoadMetadata, bool IsImporting) { |
| 7044 | auto MOrErr = getLazyBitcodeModule(*Buffer, Context, ShouldLazyLoadMetadata, |
| 7045 | IsImporting); |
| 7046 | if (MOrErr) |
| 7047 | (*MOrErr)->setOwnedMemoryBuffer(std::move(Buffer)); |
| 7048 | return MOrErr; |
| 7049 | } |
| 7050 | |
| 7051 | Expected<std::unique_ptr<Module>> |
| 7052 | BitcodeModule::parseModule(LLVMContext &Context, |
| 7053 | DataLayoutCallbackTy DataLayoutCallback) { |
| 7054 | return getModuleImpl(Context, true, false, false, DataLayoutCallback); |
| 7055 | // TODO: Restore the use-lists to the in-memory state when the bitcode was |
| 7056 | // written. We must defer until the Module has been fully materialized. |
| 7057 | } |
| 7058 | |
| 7059 | Expected<std::unique_ptr<Module>> |
| 7060 | llvm::parseBitcodeFile(MemoryBufferRef Buffer, LLVMContext &Context, |
| 7061 | DataLayoutCallbackTy DataLayoutCallback) { |
| 7062 | Expected<BitcodeModule> BM = getSingleModule(Buffer); |
| 7063 | if (!BM) |
| 7064 | return BM.takeError(); |
| 7065 | |
| 7066 | return BM->parseModule(Context, DataLayoutCallback); |
| 7067 | } |
| 7068 | |
| 7069 | Expected<std::string> llvm::getBitcodeTargetTriple(MemoryBufferRef Buffer) { |
| 7070 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); |
| 7071 | if (!StreamOrErr) |
| 7072 | return StreamOrErr.takeError(); |
| 7073 | |
| 7074 | return readTriple(*StreamOrErr); |
| 7075 | } |
| 7076 | |
| 7077 | Expected<bool> llvm::isBitcodeContainingObjCCategory(MemoryBufferRef Buffer) { |
| 7078 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); |
| 7079 | if (!StreamOrErr) |
| 7080 | return StreamOrErr.takeError(); |
| 7081 | |
| 7082 | return hasObjCCategory(*StreamOrErr); |
| 7083 | } |
| 7084 | |
| 7085 | Expected<std::string> llvm::getBitcodeProducerString(MemoryBufferRef Buffer) { |
| 7086 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); |
| 7087 | if (!StreamOrErr) |
| 7088 | return StreamOrErr.takeError(); |
| 7089 | |
| 7090 | return readIdentificationCode(*StreamOrErr); |
| 7091 | } |
| 7092 | |
| 7093 | Error llvm::readModuleSummaryIndex(MemoryBufferRef Buffer, |
| 7094 | ModuleSummaryIndex &CombinedIndex, |
| 7095 | uint64_t ModuleId) { |
| 7096 | Expected<BitcodeModule> BM = getSingleModule(Buffer); |
| 7097 | if (!BM) |
| 7098 | return BM.takeError(); |
| 7099 | |
| 7100 | return BM->readSummary(CombinedIndex, BM->getModuleIdentifier(), ModuleId); |
| 7101 | } |
| 7102 | |
| 7103 | Expected<std::unique_ptr<ModuleSummaryIndex>> |
| 7104 | llvm::getModuleSummaryIndex(MemoryBufferRef Buffer) { |
| 7105 | Expected<BitcodeModule> BM = getSingleModule(Buffer); |
| 7106 | if (!BM) |
| 7107 | return BM.takeError(); |
| 7108 | |
| 7109 | return BM->getSummary(); |
| 7110 | } |
| 7111 | |
| 7112 | Expected<BitcodeLTOInfo> llvm::getBitcodeLTOInfo(MemoryBufferRef Buffer) { |
| 7113 | Expected<BitcodeModule> BM = getSingleModule(Buffer); |
| 7114 | if (!BM) |
| 7115 | return BM.takeError(); |
| 7116 | |
| 7117 | return BM->getLTOInfo(); |
| 7118 | } |
| 7119 | |
| 7120 | Expected<std::unique_ptr<ModuleSummaryIndex>> |
| 7121 | llvm::getModuleSummaryIndexForFile(StringRef Path, |
| 7122 | bool IgnoreEmptyThinLTOIndexFile) { |
| 7123 | ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr = |
| 7124 | MemoryBuffer::getFileOrSTDIN(Path); |
| 7125 | if (!FileOrErr) |
| 7126 | return errorCodeToError(FileOrErr.getError()); |
| 7127 | if (IgnoreEmptyThinLTOIndexFile && !(*FileOrErr)->getBufferSize()) |
| 7128 | return nullptr; |
| 7129 | return getModuleSummaryIndex(**FileOrErr); |
| 7130 | } |