File: | build/llvm-toolchain-snapshot-15~++20220214111405+a87d3ba61c64/llvm/lib/Bitcode/Reader/BitcodeReader.cpp |
Warning: | line 834, column 26 Method called on moved-from object 'Stream' |
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/GlobalObject.h" | |||
45 | #include "llvm/IR/GlobalValue.h" | |||
46 | #include "llvm/IR/GlobalVariable.h" | |||
47 | #include "llvm/IR/InlineAsm.h" | |||
48 | #include "llvm/IR/InstIterator.h" | |||
49 | #include "llvm/IR/InstrTypes.h" | |||
50 | #include "llvm/IR/Instruction.h" | |||
51 | #include "llvm/IR/Instructions.h" | |||
52 | #include "llvm/IR/Intrinsics.h" | |||
53 | #include "llvm/IR/LLVMContext.h" | |||
54 | #include "llvm/IR/Metadata.h" | |||
55 | #include "llvm/IR/Module.h" | |||
56 | #include "llvm/IR/ModuleSummaryIndex.h" | |||
57 | #include "llvm/IR/Operator.h" | |||
58 | #include "llvm/IR/Type.h" | |||
59 | #include "llvm/IR/Value.h" | |||
60 | #include "llvm/IR/Verifier.h" | |||
61 | #include "llvm/Support/AtomicOrdering.h" | |||
62 | #include "llvm/Support/Casting.h" | |||
63 | #include "llvm/Support/CommandLine.h" | |||
64 | #include "llvm/Support/Compiler.h" | |||
65 | #include "llvm/Support/Debug.h" | |||
66 | #include "llvm/Support/Error.h" | |||
67 | #include "llvm/Support/ErrorHandling.h" | |||
68 | #include "llvm/Support/ErrorOr.h" | |||
69 | #include "llvm/Support/ManagedStatic.h" | |||
70 | #include "llvm/Support/MathExtras.h" | |||
71 | #include "llvm/Support/MemoryBuffer.h" | |||
72 | #include "llvm/Support/raw_ostream.h" | |||
73 | #include <algorithm> | |||
74 | #include <cassert> | |||
75 | #include <cstddef> | |||
76 | #include <cstdint> | |||
77 | #include <deque> | |||
78 | #include <map> | |||
79 | #include <memory> | |||
80 | #include <set> | |||
81 | #include <string> | |||
82 | #include <system_error> | |||
83 | #include <tuple> | |||
84 | #include <utility> | |||
85 | #include <vector> | |||
86 | ||||
87 | using namespace llvm; | |||
88 | ||||
89 | static cl::opt<bool> PrintSummaryGUIDs( | |||
90 | "print-summary-global-ids", cl::init(false), cl::Hidden, | |||
91 | cl::desc( | |||
92 | "Print the global id for each value when reading the module summary")); | |||
93 | ||||
94 | namespace { | |||
95 | ||||
96 | enum { | |||
97 | SWITCH_INST_MAGIC = 0x4B5 // May 2012 => 1205 => Hex | |||
98 | }; | |||
99 | ||||
100 | } // end anonymous namespace | |||
101 | ||||
102 | static Error error(const Twine &Message) { | |||
103 | return make_error<StringError>( | |||
104 | Message, make_error_code(BitcodeError::CorruptedBitcode)); | |||
105 | } | |||
106 | ||||
107 | static Error hasInvalidBitcodeHeader(BitstreamCursor &Stream) { | |||
108 | if (!Stream.canSkipToPos(4)) | |||
109 | return createStringError(std::errc::illegal_byte_sequence, | |||
110 | "file too small to contain bitcode header"); | |||
111 | for (unsigned C : {'B', 'C'}) | |||
112 | if (Expected<SimpleBitstreamCursor::word_t> Res = Stream.Read(8)) { | |||
113 | if (Res.get() != C) | |||
114 | return createStringError(std::errc::illegal_byte_sequence, | |||
115 | "file doesn't start with bitcode header"); | |||
116 | } else | |||
117 | return Res.takeError(); | |||
118 | for (unsigned C : {0x0, 0xC, 0xE, 0xD}) | |||
119 | if (Expected<SimpleBitstreamCursor::word_t> Res = Stream.Read(4)) { | |||
120 | if (Res.get() != C) | |||
121 | return createStringError(std::errc::illegal_byte_sequence, | |||
122 | "file doesn't start with bitcode header"); | |||
123 | } else | |||
124 | return Res.takeError(); | |||
125 | return Error::success(); | |||
126 | } | |||
127 | ||||
128 | static Expected<BitstreamCursor> initStream(MemoryBufferRef Buffer) { | |||
129 | const unsigned char *BufPtr = (const unsigned char *)Buffer.getBufferStart(); | |||
130 | const unsigned char *BufEnd = BufPtr + Buffer.getBufferSize(); | |||
131 | ||||
132 | if (Buffer.getBufferSize() & 3) | |||
133 | return error("Invalid bitcode signature"); | |||
134 | ||||
135 | // If we have a wrapper header, parse it and ignore the non-bc file contents. | |||
136 | // The magic number is 0x0B17C0DE stored in little endian. | |||
137 | if (isBitcodeWrapper(BufPtr, BufEnd)) | |||
138 | if (SkipBitcodeWrapperHeader(BufPtr, BufEnd, true)) | |||
139 | return error("Invalid bitcode wrapper header"); | |||
140 | ||||
141 | BitstreamCursor Stream(ArrayRef<uint8_t>(BufPtr, BufEnd)); | |||
142 | if (Error Err = hasInvalidBitcodeHeader(Stream)) | |||
143 | return std::move(Err); | |||
144 | ||||
145 | return std::move(Stream); | |||
146 | } | |||
147 | ||||
148 | /// Convert a string from a record into an std::string, return true on failure. | |||
149 | template <typename StrTy> | |||
150 | static bool convertToString(ArrayRef<uint64_t> Record, unsigned Idx, | |||
151 | StrTy &Result) { | |||
152 | if (Idx > Record.size()) | |||
153 | return true; | |||
154 | ||||
155 | Result.append(Record.begin() + Idx, Record.end()); | |||
156 | return false; | |||
157 | } | |||
158 | ||||
159 | // Strip all the TBAA attachment for the module. | |||
160 | static void stripTBAA(Module *M) { | |||
161 | for (auto &F : *M) { | |||
162 | if (F.isMaterializable()) | |||
163 | continue; | |||
164 | for (auto &I : instructions(F)) | |||
165 | I.setMetadata(LLVMContext::MD_tbaa, nullptr); | |||
166 | } | |||
167 | } | |||
168 | ||||
169 | /// Read the "IDENTIFICATION_BLOCK_ID" block, do some basic enforcement on the | |||
170 | /// "epoch" encoded in the bitcode, and return the producer name if any. | |||
171 | static Expected<std::string> readIdentificationBlock(BitstreamCursor &Stream) { | |||
172 | if (Error Err = Stream.EnterSubBlock(bitc::IDENTIFICATION_BLOCK_ID)) | |||
173 | return std::move(Err); | |||
174 | ||||
175 | // Read all the records. | |||
176 | SmallVector<uint64_t, 64> Record; | |||
177 | ||||
178 | std::string ProducerIdentification; | |||
179 | ||||
180 | while (true) { | |||
181 | BitstreamEntry Entry; | |||
182 | if (Error E = Stream.advance().moveInto(Entry)) | |||
183 | return std::move(E); | |||
184 | ||||
185 | switch (Entry.Kind) { | |||
186 | default: | |||
187 | case BitstreamEntry::Error: | |||
188 | return error("Malformed block"); | |||
189 | case BitstreamEntry::EndBlock: | |||
190 | return ProducerIdentification; | |||
191 | case BitstreamEntry::Record: | |||
192 | // The interesting case. | |||
193 | break; | |||
194 | } | |||
195 | ||||
196 | // Read a record. | |||
197 | Record.clear(); | |||
198 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | |||
199 | if (!MaybeBitCode) | |||
200 | return MaybeBitCode.takeError(); | |||
201 | switch (MaybeBitCode.get()) { | |||
202 | default: // Default behavior: reject | |||
203 | return error("Invalid value"); | |||
204 | case bitc::IDENTIFICATION_CODE_STRING: // IDENTIFICATION: [strchr x N] | |||
205 | convertToString(Record, 0, ProducerIdentification); | |||
206 | break; | |||
207 | case bitc::IDENTIFICATION_CODE_EPOCH: { // EPOCH: [epoch#] | |||
208 | unsigned epoch = (unsigned)Record[0]; | |||
209 | if (epoch != bitc::BITCODE_CURRENT_EPOCH) { | |||
210 | return error( | |||
211 | Twine("Incompatible epoch: Bitcode '") + Twine(epoch) + | |||
212 | "' vs current: '" + Twine(bitc::BITCODE_CURRENT_EPOCH) + "'"); | |||
213 | } | |||
214 | } | |||
215 | } | |||
216 | } | |||
217 | } | |||
218 | ||||
219 | static Expected<std::string> readIdentificationCode(BitstreamCursor &Stream) { | |||
220 | // We expect a number of well-defined blocks, though we don't necessarily | |||
221 | // need to understand them all. | |||
222 | while (true) { | |||
223 | if (Stream.AtEndOfStream()) | |||
224 | return ""; | |||
225 | ||||
226 | BitstreamEntry Entry; | |||
227 | if (Error E = Stream.advance().moveInto(Entry)) | |||
228 | return std::move(E); | |||
229 | ||||
230 | switch (Entry.Kind) { | |||
231 | case BitstreamEntry::EndBlock: | |||
232 | case BitstreamEntry::Error: | |||
233 | return error("Malformed block"); | |||
234 | ||||
235 | case BitstreamEntry::SubBlock: | |||
236 | if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) | |||
237 | return readIdentificationBlock(Stream); | |||
238 | ||||
239 | // Ignore other sub-blocks. | |||
240 | if (Error Err = Stream.SkipBlock()) | |||
241 | return std::move(Err); | |||
242 | continue; | |||
243 | case BitstreamEntry::Record: | |||
244 | if (Error E = Stream.skipRecord(Entry.ID).takeError()) | |||
245 | return std::move(E); | |||
246 | continue; | |||
247 | } | |||
248 | } | |||
249 | } | |||
250 | ||||
251 | static Expected<bool> hasObjCCategoryInModule(BitstreamCursor &Stream) { | |||
252 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | |||
253 | return std::move(Err); | |||
254 | ||||
255 | SmallVector<uint64_t, 64> Record; | |||
256 | // Read all the records for this module. | |||
257 | ||||
258 | while (true) { | |||
259 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
260 | if (!MaybeEntry) | |||
261 | return MaybeEntry.takeError(); | |||
262 | BitstreamEntry Entry = MaybeEntry.get(); | |||
263 | ||||
264 | switch (Entry.Kind) { | |||
265 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
266 | case BitstreamEntry::Error: | |||
267 | return error("Malformed block"); | |||
268 | case BitstreamEntry::EndBlock: | |||
269 | return false; | |||
270 | case BitstreamEntry::Record: | |||
271 | // The interesting case. | |||
272 | break; | |||
273 | } | |||
274 | ||||
275 | // Read a record. | |||
276 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
277 | if (!MaybeRecord) | |||
278 | return MaybeRecord.takeError(); | |||
279 | switch (MaybeRecord.get()) { | |||
280 | default: | |||
281 | break; // Default behavior, ignore unknown content. | |||
282 | case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N] | |||
283 | std::string S; | |||
284 | if (convertToString(Record, 0, S)) | |||
285 | return error("Invalid record"); | |||
286 | // Check for the i386 and other (x86_64, ARM) conventions | |||
287 | if (S.find("__DATA,__objc_catlist") != std::string::npos || | |||
288 | S.find("__OBJC,__category") != std::string::npos) | |||
289 | return true; | |||
290 | break; | |||
291 | } | |||
292 | } | |||
293 | Record.clear(); | |||
294 | } | |||
295 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 295); | |||
296 | } | |||
297 | ||||
298 | static Expected<bool> hasObjCCategory(BitstreamCursor &Stream) { | |||
299 | // We expect a number of well-defined blocks, though we don't necessarily | |||
300 | // need to understand them all. | |||
301 | while (true) { | |||
302 | BitstreamEntry Entry; | |||
303 | if (Error E = Stream.advance().moveInto(Entry)) | |||
304 | return std::move(E); | |||
305 | ||||
306 | switch (Entry.Kind) { | |||
307 | case BitstreamEntry::Error: | |||
308 | return error("Malformed block"); | |||
309 | case BitstreamEntry::EndBlock: | |||
310 | return false; | |||
311 | ||||
312 | case BitstreamEntry::SubBlock: | |||
313 | if (Entry.ID == bitc::MODULE_BLOCK_ID) | |||
314 | return hasObjCCategoryInModule(Stream); | |||
315 | ||||
316 | // Ignore other sub-blocks. | |||
317 | if (Error Err = Stream.SkipBlock()) | |||
318 | return std::move(Err); | |||
319 | continue; | |||
320 | ||||
321 | case BitstreamEntry::Record: | |||
322 | if (Error E = Stream.skipRecord(Entry.ID).takeError()) | |||
323 | return std::move(E); | |||
324 | continue; | |||
325 | } | |||
326 | } | |||
327 | } | |||
328 | ||||
329 | static Expected<std::string> readModuleTriple(BitstreamCursor &Stream) { | |||
330 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | |||
331 | return std::move(Err); | |||
332 | ||||
333 | SmallVector<uint64_t, 64> Record; | |||
334 | ||||
335 | std::string Triple; | |||
336 | ||||
337 | // Read all the records for this module. | |||
338 | while (true) { | |||
339 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
340 | if (!MaybeEntry) | |||
341 | return MaybeEntry.takeError(); | |||
342 | BitstreamEntry Entry = MaybeEntry.get(); | |||
343 | ||||
344 | switch (Entry.Kind) { | |||
345 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
346 | case BitstreamEntry::Error: | |||
347 | return error("Malformed block"); | |||
348 | case BitstreamEntry::EndBlock: | |||
349 | return Triple; | |||
350 | case BitstreamEntry::Record: | |||
351 | // The interesting case. | |||
352 | break; | |||
353 | } | |||
354 | ||||
355 | // Read a record. | |||
356 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
357 | if (!MaybeRecord) | |||
358 | return MaybeRecord.takeError(); | |||
359 | switch (MaybeRecord.get()) { | |||
360 | default: break; // Default behavior, ignore unknown content. | |||
361 | case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N] | |||
362 | std::string S; | |||
363 | if (convertToString(Record, 0, S)) | |||
364 | return error("Invalid record"); | |||
365 | Triple = S; | |||
366 | break; | |||
367 | } | |||
368 | } | |||
369 | Record.clear(); | |||
370 | } | |||
371 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 371); | |||
372 | } | |||
373 | ||||
374 | static Expected<std::string> readTriple(BitstreamCursor &Stream) { | |||
375 | // We expect a number of well-defined blocks, though we don't necessarily | |||
376 | // need to understand them all. | |||
377 | while (true) { | |||
378 | Expected<BitstreamEntry> MaybeEntry = Stream.advance(); | |||
379 | if (!MaybeEntry) | |||
380 | return MaybeEntry.takeError(); | |||
381 | BitstreamEntry Entry = MaybeEntry.get(); | |||
382 | ||||
383 | switch (Entry.Kind) { | |||
384 | case BitstreamEntry::Error: | |||
385 | return error("Malformed block"); | |||
386 | case BitstreamEntry::EndBlock: | |||
387 | return ""; | |||
388 | ||||
389 | case BitstreamEntry::SubBlock: | |||
390 | if (Entry.ID == bitc::MODULE_BLOCK_ID) | |||
391 | return readModuleTriple(Stream); | |||
392 | ||||
393 | // Ignore other sub-blocks. | |||
394 | if (Error Err = Stream.SkipBlock()) | |||
395 | return std::move(Err); | |||
396 | continue; | |||
397 | ||||
398 | case BitstreamEntry::Record: | |||
399 | if (llvm::Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID)) | |||
400 | continue; | |||
401 | else | |||
402 | return Skipped.takeError(); | |||
403 | } | |||
404 | } | |||
405 | } | |||
406 | ||||
407 | namespace { | |||
408 | ||||
409 | class BitcodeReaderBase { | |||
410 | protected: | |||
411 | BitcodeReaderBase(BitstreamCursor Stream, StringRef Strtab) | |||
412 | : Stream(std::move(Stream)), Strtab(Strtab) { | |||
413 | this->Stream.setBlockInfo(&BlockInfo); | |||
414 | } | |||
415 | ||||
416 | BitstreamBlockInfo BlockInfo; | |||
417 | BitstreamCursor Stream; | |||
418 | StringRef Strtab; | |||
419 | ||||
420 | /// In version 2 of the bitcode we store names of global values and comdats in | |||
421 | /// a string table rather than in the VST. | |||
422 | bool UseStrtab = false; | |||
423 | ||||
424 | Expected<unsigned> parseVersionRecord(ArrayRef<uint64_t> Record); | |||
425 | ||||
426 | /// If this module uses a string table, pop the reference to the string table | |||
427 | /// and return the referenced string and the rest of the record. Otherwise | |||
428 | /// just return the record itself. | |||
429 | std::pair<StringRef, ArrayRef<uint64_t>> | |||
430 | readNameFromStrtab(ArrayRef<uint64_t> Record); | |||
431 | ||||
432 | Error readBlockInfo(); | |||
433 | ||||
434 | // Contains an arbitrary and optional string identifying the bitcode producer | |||
435 | std::string ProducerIdentification; | |||
436 | ||||
437 | Error error(const Twine &Message); | |||
438 | }; | |||
439 | ||||
440 | } // end anonymous namespace | |||
441 | ||||
442 | Error BitcodeReaderBase::error(const Twine &Message) { | |||
443 | std::string FullMsg = Message.str(); | |||
444 | if (!ProducerIdentification.empty()) | |||
445 | FullMsg += " (Producer: '" + ProducerIdentification + "' Reader: 'LLVM " + | |||
446 | LLVM_VERSION_STRING"15.0.0" "')"; | |||
447 | return ::error(FullMsg); | |||
448 | } | |||
449 | ||||
450 | Expected<unsigned> | |||
451 | BitcodeReaderBase::parseVersionRecord(ArrayRef<uint64_t> Record) { | |||
452 | if (Record.empty()) | |||
453 | return error("Invalid record"); | |||
454 | unsigned ModuleVersion = Record[0]; | |||
455 | if (ModuleVersion > 2) | |||
456 | return error("Invalid value"); | |||
457 | UseStrtab = ModuleVersion >= 2; | |||
458 | return ModuleVersion; | |||
459 | } | |||
460 | ||||
461 | std::pair<StringRef, ArrayRef<uint64_t>> | |||
462 | BitcodeReaderBase::readNameFromStrtab(ArrayRef<uint64_t> Record) { | |||
463 | if (!UseStrtab) | |||
464 | return {"", Record}; | |||
465 | // Invalid reference. Let the caller complain about the record being empty. | |||
466 | if (Record[0] + Record[1] > Strtab.size()) | |||
467 | return {"", {}}; | |||
468 | return {StringRef(Strtab.data() + Record[0], Record[1]), Record.slice(2)}; | |||
469 | } | |||
470 | ||||
471 | namespace { | |||
472 | ||||
473 | class BitcodeReader : public BitcodeReaderBase, public GVMaterializer { | |||
474 | LLVMContext &Context; | |||
475 | Module *TheModule = nullptr; | |||
476 | // Next offset to start scanning for lazy parsing of function bodies. | |||
477 | uint64_t NextUnreadBit = 0; | |||
478 | // Last function offset found in the VST. | |||
479 | uint64_t LastFunctionBlockBit = 0; | |||
480 | bool SeenValueSymbolTable = false; | |||
481 | uint64_t VSTOffset = 0; | |||
482 | ||||
483 | std::vector<std::string> SectionTable; | |||
484 | std::vector<std::string> GCTable; | |||
485 | ||||
486 | std::vector<Type *> TypeList; | |||
487 | /// Stores pointer element type for a given type ID. This is used during | |||
488 | /// upgrades of typed pointer IR in opaque pointer mode. | |||
489 | std::vector<Type *> ElementTypeList; | |||
490 | DenseMap<Function *, FunctionType *> FunctionTypes; | |||
491 | BitcodeReaderValueList ValueList; | |||
492 | Optional<MetadataLoader> MDLoader; | |||
493 | std::vector<Comdat *> ComdatList; | |||
494 | DenseSet<GlobalObject *> ImplicitComdatObjects; | |||
495 | SmallVector<Instruction *, 64> InstructionList; | |||
496 | ||||
497 | std::vector<std::pair<GlobalVariable *, unsigned>> GlobalInits; | |||
498 | std::vector<std::pair<GlobalValue *, unsigned>> IndirectSymbolInits; | |||
499 | ||||
500 | struct FunctionOperandInfo { | |||
501 | Function *F; | |||
502 | unsigned PersonalityFn; | |||
503 | unsigned Prefix; | |||
504 | unsigned Prologue; | |||
505 | }; | |||
506 | std::vector<FunctionOperandInfo> FunctionOperands; | |||
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 | Type *getTypeByID(unsigned ID); | |||
597 | Type *getPtrElementTypeByID(unsigned ID); | |||
598 | ||||
599 | Value *getFnValueByID(unsigned ID, Type *Ty) { | |||
600 | if (Ty && Ty->isMetadataTy()) | |||
601 | return MetadataAsValue::get(Ty->getContext(), getFnMetadataByID(ID)); | |||
602 | return ValueList.getValueFwdRef(ID, Ty); | |||
603 | } | |||
604 | ||||
605 | Metadata *getFnMetadataByID(unsigned ID) { | |||
606 | return MDLoader->getMetadataFwdRefOrLoad(ID); | |||
607 | } | |||
608 | ||||
609 | BasicBlock *getBasicBlock(unsigned ID) const { | |||
610 | if (ID >= FunctionBBs.size()) return nullptr; // Invalid ID | |||
611 | return FunctionBBs[ID]; | |||
612 | } | |||
613 | ||||
614 | AttributeList getAttributes(unsigned i) const { | |||
615 | if (i-1 < MAttributes.size()) | |||
616 | return MAttributes[i-1]; | |||
617 | return AttributeList(); | |||
618 | } | |||
619 | ||||
620 | /// Read a value/type pair out of the specified record from slot 'Slot'. | |||
621 | /// Increment Slot past the number of slots used in the record. Return true on | |||
622 | /// failure. | |||
623 | bool getValueTypePair(const SmallVectorImpl<uint64_t> &Record, unsigned &Slot, | |||
624 | unsigned InstNum, Value *&ResVal) { | |||
625 | if (Slot == Record.size()) return true; | |||
626 | unsigned ValNo = (unsigned)Record[Slot++]; | |||
627 | // Adjust the ValNo, if it was encoded relative to the InstNum. | |||
628 | if (UseRelativeIDs) | |||
629 | ValNo = InstNum - ValNo; | |||
630 | if (ValNo < InstNum) { | |||
631 | // If this is not a forward reference, just return the value we already | |||
632 | // have. | |||
633 | ResVal = getFnValueByID(ValNo, nullptr); | |||
634 | return ResVal == nullptr; | |||
635 | } | |||
636 | if (Slot == Record.size()) | |||
637 | return true; | |||
638 | ||||
639 | unsigned TypeNo = (unsigned)Record[Slot++]; | |||
640 | ResVal = getFnValueByID(ValNo, getTypeByID(TypeNo)); | |||
641 | return ResVal == nullptr; | |||
642 | } | |||
643 | ||||
644 | /// Read a value out of the specified record from slot 'Slot'. Increment Slot | |||
645 | /// past the number of slots used by the value in the record. Return true if | |||
646 | /// there is an error. | |||
647 | bool popValue(const SmallVectorImpl<uint64_t> &Record, unsigned &Slot, | |||
648 | unsigned InstNum, Type *Ty, Value *&ResVal) { | |||
649 | if (getValue(Record, Slot, InstNum, Ty, ResVal)) | |||
650 | return true; | |||
651 | // All values currently take a single record slot. | |||
652 | ++Slot; | |||
653 | return false; | |||
654 | } | |||
655 | ||||
656 | /// Like popValue, but does not increment the Slot number. | |||
657 | bool getValue(const SmallVectorImpl<uint64_t> &Record, unsigned Slot, | |||
658 | unsigned InstNum, Type *Ty, Value *&ResVal) { | |||
659 | ResVal = getValue(Record, Slot, InstNum, Ty); | |||
660 | return ResVal == nullptr; | |||
661 | } | |||
662 | ||||
663 | /// Version of getValue that returns ResVal directly, or 0 if there is an | |||
664 | /// error. | |||
665 | Value *getValue(const SmallVectorImpl<uint64_t> &Record, unsigned Slot, | |||
666 | unsigned InstNum, Type *Ty) { | |||
667 | if (Slot == Record.size()) return nullptr; | |||
668 | unsigned ValNo = (unsigned)Record[Slot]; | |||
669 | // Adjust the ValNo, if it was encoded relative to the InstNum. | |||
670 | if (UseRelativeIDs) | |||
671 | ValNo = InstNum - ValNo; | |||
672 | return getFnValueByID(ValNo, Ty); | |||
673 | } | |||
674 | ||||
675 | /// Like getValue, but decodes signed VBRs. | |||
676 | Value *getValueSigned(const SmallVectorImpl<uint64_t> &Record, unsigned Slot, | |||
677 | unsigned InstNum, Type *Ty) { | |||
678 | if (Slot == Record.size()) return nullptr; | |||
679 | unsigned ValNo = (unsigned)decodeSignRotatedValue(Record[Slot]); | |||
680 | // Adjust the ValNo, if it was encoded relative to the InstNum. | |||
681 | if (UseRelativeIDs) | |||
682 | ValNo = InstNum - ValNo; | |||
683 | return getFnValueByID(ValNo, Ty); | |||
684 | } | |||
685 | ||||
686 | /// Upgrades old-style typeless byval/sret/inalloca attributes by adding the | |||
687 | /// corresponding argument's pointee type. Also upgrades intrinsics that now | |||
688 | /// require an elementtype attribute. | |||
689 | void propagateAttributeTypes(CallBase *CB, ArrayRef<Type *> ArgsTys); | |||
690 | ||||
691 | /// Converts alignment exponent (i.e. power of two (or zero)) to the | |||
692 | /// corresponding alignment to use. If alignment is too large, returns | |||
693 | /// a corresponding error code. | |||
694 | Error parseAlignmentValue(uint64_t Exponent, MaybeAlign &Alignment); | |||
695 | Error parseAttrKind(uint64_t Code, Attribute::AttrKind *Kind); | |||
696 | Error parseModule( | |||
697 | uint64_t ResumeBit, bool ShouldLazyLoadMetadata = false, | |||
698 | DataLayoutCallbackTy DataLayoutCallback = [](StringRef) { return None; }); | |||
699 | ||||
700 | Error parseComdatRecord(ArrayRef<uint64_t> Record); | |||
701 | Error parseGlobalVarRecord(ArrayRef<uint64_t> Record); | |||
702 | Error parseFunctionRecord(ArrayRef<uint64_t> Record); | |||
703 | Error parseGlobalIndirectSymbolRecord(unsigned BitCode, | |||
704 | ArrayRef<uint64_t> Record); | |||
705 | ||||
706 | Error parseAttributeBlock(); | |||
707 | Error parseAttributeGroupBlock(); | |||
708 | Error parseTypeTable(); | |||
709 | Error parseTypeTableBody(); | |||
710 | Error parseOperandBundleTags(); | |||
711 | Error parseSyncScopeNames(); | |||
712 | ||||
713 | Expected<Value *> recordValue(SmallVectorImpl<uint64_t> &Record, | |||
714 | unsigned NameIndex, Triple &TT); | |||
715 | void setDeferredFunctionInfo(unsigned FuncBitcodeOffsetDelta, Function *F, | |||
716 | ArrayRef<uint64_t> Record); | |||
717 | Error parseValueSymbolTable(uint64_t Offset = 0); | |||
718 | Error parseGlobalValueSymbolTable(); | |||
719 | Error parseConstants(); | |||
720 | Error rememberAndSkipFunctionBodies(); | |||
721 | Error rememberAndSkipFunctionBody(); | |||
722 | /// Save the positions of the Metadata blocks and skip parsing the blocks. | |||
723 | Error rememberAndSkipMetadata(); | |||
724 | Error typeCheckLoadStoreInst(Type *ValType, Type *PtrType); | |||
725 | Error parseFunctionBody(Function *F); | |||
726 | Error globalCleanup(); | |||
727 | Error resolveGlobalAndIndirectSymbolInits(); | |||
728 | Error parseUseLists(); | |||
729 | Error findFunctionInStream( | |||
730 | Function *F, | |||
731 | DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator); | |||
732 | ||||
733 | SyncScope::ID getDecodedSyncScopeID(unsigned Val); | |||
734 | }; | |||
735 | ||||
736 | /// Class to manage reading and parsing function summary index bitcode | |||
737 | /// files/sections. | |||
738 | class ModuleSummaryIndexBitcodeReader : public BitcodeReaderBase { | |||
739 | /// The module index built during parsing. | |||
740 | ModuleSummaryIndex &TheIndex; | |||
741 | ||||
742 | /// Indicates whether we have encountered a global value summary section | |||
743 | /// yet during parsing. | |||
744 | bool SeenGlobalValSummary = false; | |||
745 | ||||
746 | /// Indicates whether we have already parsed the VST, used for error checking. | |||
747 | bool SeenValueSymbolTable = false; | |||
748 | ||||
749 | /// Set to the offset of the VST recorded in the MODULE_CODE_VSTOFFSET record. | |||
750 | /// Used to enable on-demand parsing of the VST. | |||
751 | uint64_t VSTOffset = 0; | |||
752 | ||||
753 | // Map to save ValueId to ValueInfo association that was recorded in the | |||
754 | // ValueSymbolTable. It is used after the VST is parsed to convert | |||
755 | // call graph edges read from the function summary from referencing | |||
756 | // callees by their ValueId to using the ValueInfo instead, which is how | |||
757 | // they are recorded in the summary index being built. | |||
758 | // We save a GUID which refers to the same global as the ValueInfo, but | |||
759 | // ignoring the linkage, i.e. for values other than local linkage they are | |||
760 | // identical. | |||
761 | DenseMap<unsigned, std::pair<ValueInfo, GlobalValue::GUID>> | |||
762 | ValueIdToValueInfoMap; | |||
763 | ||||
764 | /// Map populated during module path string table parsing, from the | |||
765 | /// module ID to a string reference owned by the index's module | |||
766 | /// path string table, used to correlate with combined index | |||
767 | /// summary records. | |||
768 | DenseMap<uint64_t, StringRef> ModuleIdMap; | |||
769 | ||||
770 | /// Original source file name recorded in a bitcode record. | |||
771 | std::string SourceFileName; | |||
772 | ||||
773 | /// The string identifier given to this module by the client, normally the | |||
774 | /// path to the bitcode file. | |||
775 | StringRef ModulePath; | |||
776 | ||||
777 | /// For per-module summary indexes, the unique numerical identifier given to | |||
778 | /// this module by the client. | |||
779 | unsigned ModuleId; | |||
780 | ||||
781 | public: | |||
782 | ModuleSummaryIndexBitcodeReader(BitstreamCursor Stream, StringRef Strtab, | |||
783 | ModuleSummaryIndex &TheIndex, | |||
784 | StringRef ModulePath, unsigned ModuleId); | |||
785 | ||||
786 | Error parseModule(); | |||
787 | ||||
788 | private: | |||
789 | void setValueGUID(uint64_t ValueID, StringRef ValueName, | |||
790 | GlobalValue::LinkageTypes Linkage, | |||
791 | StringRef SourceFileName); | |||
792 | Error parseValueSymbolTable( | |||
793 | uint64_t Offset, | |||
794 | DenseMap<unsigned, GlobalValue::LinkageTypes> &ValueIdToLinkageMap); | |||
795 | std::vector<ValueInfo> makeRefList(ArrayRef<uint64_t> Record); | |||
796 | std::vector<FunctionSummary::EdgeTy> makeCallList(ArrayRef<uint64_t> Record, | |||
797 | bool IsOldProfileFormat, | |||
798 | bool HasProfile, | |||
799 | bool HasRelBF); | |||
800 | Error parseEntireSummary(unsigned ID); | |||
801 | Error parseModuleStringTable(); | |||
802 | void parseTypeIdCompatibleVtableSummaryRecord(ArrayRef<uint64_t> Record); | |||
803 | void parseTypeIdCompatibleVtableInfo(ArrayRef<uint64_t> Record, size_t &Slot, | |||
804 | TypeIdCompatibleVtableInfo &TypeId); | |||
805 | std::vector<FunctionSummary::ParamAccess> | |||
806 | parseParamAccesses(ArrayRef<uint64_t> Record); | |||
807 | ||||
808 | std::pair<ValueInfo, GlobalValue::GUID> | |||
809 | getValueInfoFromValueId(unsigned ValueId); | |||
810 | ||||
811 | void addThisModule(); | |||
812 | ModuleSummaryIndex::ModuleInfo *getThisModule(); | |||
813 | }; | |||
814 | ||||
815 | } // end anonymous namespace | |||
816 | ||||
817 | std::error_code llvm::errorToErrorCodeAndEmitErrors(LLVMContext &Ctx, | |||
818 | Error Err) { | |||
819 | if (Err) { | |||
820 | std::error_code EC; | |||
821 | handleAllErrors(std::move(Err), [&](ErrorInfoBase &EIB) { | |||
822 | EC = EIB.convertToErrorCode(); | |||
823 | Ctx.emitError(EIB.message()); | |||
824 | }); | |||
825 | return EC; | |||
826 | } | |||
827 | return std::error_code(); | |||
828 | } | |||
829 | ||||
830 | BitcodeReader::BitcodeReader(BitstreamCursor Stream, StringRef Strtab, | |||
831 | StringRef ProducerIdentification, | |||
832 | LLVMContext &Context) | |||
833 | : BitcodeReaderBase(std::move(Stream), Strtab), Context(Context), | |||
834 | ValueList(Context, Stream.SizeInBytes()) { | |||
| ||||
835 | this->ProducerIdentification = std::string(ProducerIdentification); | |||
836 | } | |||
837 | ||||
838 | Error BitcodeReader::materializeForwardReferencedFunctions() { | |||
839 | if (WillMaterializeAllForwardRefs) | |||
840 | return Error::success(); | |||
841 | ||||
842 | // Prevent recursion. | |||
843 | WillMaterializeAllForwardRefs = true; | |||
844 | ||||
845 | while (!BasicBlockFwdRefQueue.empty()) { | |||
846 | Function *F = BasicBlockFwdRefQueue.front(); | |||
847 | BasicBlockFwdRefQueue.pop_front(); | |||
848 | assert(F && "Expected valid function")(static_cast <bool> (F && "Expected valid function" ) ? void (0) : __assert_fail ("F && \"Expected valid function\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 848, __extension__ __PRETTY_FUNCTION__)); | |||
849 | if (!BasicBlockFwdRefs.count(F)) | |||
850 | // Already materialized. | |||
851 | continue; | |||
852 | ||||
853 | // Check for a function that isn't materializable to prevent an infinite | |||
854 | // loop. When parsing a blockaddress stored in a global variable, there | |||
855 | // isn't a trivial way to check if a function will have a body without a | |||
856 | // linear search through FunctionsWithBodies, so just check it here. | |||
857 | if (!F->isMaterializable()) | |||
858 | return error("Never resolved function from blockaddress"); | |||
859 | ||||
860 | // Try to materialize F. | |||
861 | if (Error Err = materialize(F)) | |||
862 | return Err; | |||
863 | } | |||
864 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 864, __extension__ __PRETTY_FUNCTION__)); | |||
865 | ||||
866 | // Reset state. | |||
867 | WillMaterializeAllForwardRefs = false; | |||
868 | return Error::success(); | |||
869 | } | |||
870 | ||||
871 | //===----------------------------------------------------------------------===// | |||
872 | // Helper functions to implement forward reference resolution, etc. | |||
873 | //===----------------------------------------------------------------------===// | |||
874 | ||||
875 | static bool hasImplicitComdat(size_t Val) { | |||
876 | switch (Val) { | |||
877 | default: | |||
878 | return false; | |||
879 | case 1: // Old WeakAnyLinkage | |||
880 | case 4: // Old LinkOnceAnyLinkage | |||
881 | case 10: // Old WeakODRLinkage | |||
882 | case 11: // Old LinkOnceODRLinkage | |||
883 | return true; | |||
884 | } | |||
885 | } | |||
886 | ||||
887 | static GlobalValue::LinkageTypes getDecodedLinkage(unsigned Val) { | |||
888 | switch (Val) { | |||
889 | default: // Map unknown/new linkages to external | |||
890 | case 0: | |||
891 | return GlobalValue::ExternalLinkage; | |||
892 | case 2: | |||
893 | return GlobalValue::AppendingLinkage; | |||
894 | case 3: | |||
895 | return GlobalValue::InternalLinkage; | |||
896 | case 5: | |||
897 | return GlobalValue::ExternalLinkage; // Obsolete DLLImportLinkage | |||
898 | case 6: | |||
899 | return GlobalValue::ExternalLinkage; // Obsolete DLLExportLinkage | |||
900 | case 7: | |||
901 | return GlobalValue::ExternalWeakLinkage; | |||
902 | case 8: | |||
903 | return GlobalValue::CommonLinkage; | |||
904 | case 9: | |||
905 | return GlobalValue::PrivateLinkage; | |||
906 | case 12: | |||
907 | return GlobalValue::AvailableExternallyLinkage; | |||
908 | case 13: | |||
909 | return GlobalValue::PrivateLinkage; // Obsolete LinkerPrivateLinkage | |||
910 | case 14: | |||
911 | return GlobalValue::PrivateLinkage; // Obsolete LinkerPrivateWeakLinkage | |||
912 | case 15: | |||
913 | return GlobalValue::ExternalLinkage; // Obsolete LinkOnceODRAutoHideLinkage | |||
914 | case 1: // Old value with implicit comdat. | |||
915 | case 16: | |||
916 | return GlobalValue::WeakAnyLinkage; | |||
917 | case 10: // Old value with implicit comdat. | |||
918 | case 17: | |||
919 | return GlobalValue::WeakODRLinkage; | |||
920 | case 4: // Old value with implicit comdat. | |||
921 | case 18: | |||
922 | return GlobalValue::LinkOnceAnyLinkage; | |||
923 | case 11: // Old value with implicit comdat. | |||
924 | case 19: | |||
925 | return GlobalValue::LinkOnceODRLinkage; | |||
926 | } | |||
927 | } | |||
928 | ||||
929 | static FunctionSummary::FFlags getDecodedFFlags(uint64_t RawFlags) { | |||
930 | FunctionSummary::FFlags Flags; | |||
931 | Flags.ReadNone = RawFlags & 0x1; | |||
932 | Flags.ReadOnly = (RawFlags >> 1) & 0x1; | |||
933 | Flags.NoRecurse = (RawFlags >> 2) & 0x1; | |||
934 | Flags.ReturnDoesNotAlias = (RawFlags >> 3) & 0x1; | |||
935 | Flags.NoInline = (RawFlags >> 4) & 0x1; | |||
936 | Flags.AlwaysInline = (RawFlags >> 5) & 0x1; | |||
937 | Flags.NoUnwind = (RawFlags >> 6) & 0x1; | |||
938 | Flags.MayThrow = (RawFlags >> 7) & 0x1; | |||
939 | Flags.HasUnknownCall = (RawFlags >> 8) & 0x1; | |||
940 | Flags.MustBeUnreachable = (RawFlags >> 9) & 0x1; | |||
941 | return Flags; | |||
942 | } | |||
943 | ||||
944 | // Decode the flags for GlobalValue in the summary. The bits for each attribute: | |||
945 | // | |||
946 | // linkage: [0,4), notEligibleToImport: 4, live: 5, local: 6, canAutoHide: 7, | |||
947 | // visibility: [8, 10). | |||
948 | static GlobalValueSummary::GVFlags getDecodedGVSummaryFlags(uint64_t RawFlags, | |||
949 | uint64_t Version) { | |||
950 | // Summary were not emitted before LLVM 3.9, we don't need to upgrade Linkage | |||
951 | // like getDecodedLinkage() above. Any future change to the linkage enum and | |||
952 | // to getDecodedLinkage() will need to be taken into account here as above. | |||
953 | auto Linkage = GlobalValue::LinkageTypes(RawFlags & 0xF); // 4 bits | |||
954 | auto Visibility = GlobalValue::VisibilityTypes((RawFlags >> 8) & 3); // 2 bits | |||
955 | RawFlags = RawFlags >> 4; | |||
956 | bool NotEligibleToImport = (RawFlags & 0x1) || Version < 3; | |||
957 | // The Live flag wasn't introduced until version 3. For dead stripping | |||
958 | // to work correctly on earlier versions, we must conservatively treat all | |||
959 | // values as live. | |||
960 | bool Live = (RawFlags & 0x2) || Version < 3; | |||
961 | bool Local = (RawFlags & 0x4); | |||
962 | bool AutoHide = (RawFlags & 0x8); | |||
963 | ||||
964 | return GlobalValueSummary::GVFlags(Linkage, Visibility, NotEligibleToImport, | |||
965 | Live, Local, AutoHide); | |||
966 | } | |||
967 | ||||
968 | // Decode the flags for GlobalVariable in the summary | |||
969 | static GlobalVarSummary::GVarFlags getDecodedGVarFlags(uint64_t RawFlags) { | |||
970 | return GlobalVarSummary::GVarFlags( | |||
971 | (RawFlags & 0x1) ? true : false, (RawFlags & 0x2) ? true : false, | |||
972 | (RawFlags & 0x4) ? true : false, | |||
973 | (GlobalObject::VCallVisibility)(RawFlags >> 3)); | |||
974 | } | |||
975 | ||||
976 | static GlobalValue::VisibilityTypes getDecodedVisibility(unsigned Val) { | |||
977 | switch (Val) { | |||
978 | default: // Map unknown visibilities to default. | |||
979 | case 0: return GlobalValue::DefaultVisibility; | |||
980 | case 1: return GlobalValue::HiddenVisibility; | |||
981 | case 2: return GlobalValue::ProtectedVisibility; | |||
982 | } | |||
983 | } | |||
984 | ||||
985 | static GlobalValue::DLLStorageClassTypes | |||
986 | getDecodedDLLStorageClass(unsigned Val) { | |||
987 | switch (Val) { | |||
988 | default: // Map unknown values to default. | |||
989 | case 0: return GlobalValue::DefaultStorageClass; | |||
990 | case 1: return GlobalValue::DLLImportStorageClass; | |||
991 | case 2: return GlobalValue::DLLExportStorageClass; | |||
992 | } | |||
993 | } | |||
994 | ||||
995 | static bool getDecodedDSOLocal(unsigned Val) { | |||
996 | switch(Val) { | |||
997 | default: // Map unknown values to preemptable. | |||
998 | case 0: return false; | |||
999 | case 1: return true; | |||
1000 | } | |||
1001 | } | |||
1002 | ||||
1003 | static GlobalVariable::ThreadLocalMode getDecodedThreadLocalMode(unsigned Val) { | |||
1004 | switch (Val) { | |||
1005 | case 0: return GlobalVariable::NotThreadLocal; | |||
1006 | default: // Map unknown non-zero value to general dynamic. | |||
1007 | case 1: return GlobalVariable::GeneralDynamicTLSModel; | |||
1008 | case 2: return GlobalVariable::LocalDynamicTLSModel; | |||
1009 | case 3: return GlobalVariable::InitialExecTLSModel; | |||
1010 | case 4: return GlobalVariable::LocalExecTLSModel; | |||
1011 | } | |||
1012 | } | |||
1013 | ||||
1014 | static GlobalVariable::UnnamedAddr getDecodedUnnamedAddrType(unsigned Val) { | |||
1015 | switch (Val) { | |||
1016 | default: // Map unknown to UnnamedAddr::None. | |||
1017 | case 0: return GlobalVariable::UnnamedAddr::None; | |||
1018 | case 1: return GlobalVariable::UnnamedAddr::Global; | |||
1019 | case 2: return GlobalVariable::UnnamedAddr::Local; | |||
1020 | } | |||
1021 | } | |||
1022 | ||||
1023 | static int getDecodedCastOpcode(unsigned Val) { | |||
1024 | switch (Val) { | |||
1025 | default: return -1; | |||
1026 | case bitc::CAST_TRUNC : return Instruction::Trunc; | |||
1027 | case bitc::CAST_ZEXT : return Instruction::ZExt; | |||
1028 | case bitc::CAST_SEXT : return Instruction::SExt; | |||
1029 | case bitc::CAST_FPTOUI : return Instruction::FPToUI; | |||
1030 | case bitc::CAST_FPTOSI : return Instruction::FPToSI; | |||
1031 | case bitc::CAST_UITOFP : return Instruction::UIToFP; | |||
1032 | case bitc::CAST_SITOFP : return Instruction::SIToFP; | |||
1033 | case bitc::CAST_FPTRUNC : return Instruction::FPTrunc; | |||
1034 | case bitc::CAST_FPEXT : return Instruction::FPExt; | |||
1035 | case bitc::CAST_PTRTOINT: return Instruction::PtrToInt; | |||
1036 | case bitc::CAST_INTTOPTR: return Instruction::IntToPtr; | |||
1037 | case bitc::CAST_BITCAST : return Instruction::BitCast; | |||
1038 | case bitc::CAST_ADDRSPACECAST: return Instruction::AddrSpaceCast; | |||
1039 | } | |||
1040 | } | |||
1041 | ||||
1042 | static int getDecodedUnaryOpcode(unsigned Val, Type *Ty) { | |||
1043 | bool IsFP = Ty->isFPOrFPVectorTy(); | |||
1044 | // UnOps are only valid for int/fp or vector of int/fp types | |||
1045 | if (!IsFP && !Ty->isIntOrIntVectorTy()) | |||
1046 | return -1; | |||
1047 | ||||
1048 | switch (Val) { | |||
1049 | default: | |||
1050 | return -1; | |||
1051 | case bitc::UNOP_FNEG: | |||
1052 | return IsFP ? Instruction::FNeg : -1; | |||
1053 | } | |||
1054 | } | |||
1055 | ||||
1056 | static int getDecodedBinaryOpcode(unsigned Val, Type *Ty) { | |||
1057 | bool IsFP = Ty->isFPOrFPVectorTy(); | |||
1058 | // BinOps are only valid for int/fp or vector of int/fp types | |||
1059 | if (!IsFP && !Ty->isIntOrIntVectorTy()) | |||
1060 | return -1; | |||
1061 | ||||
1062 | switch (Val) { | |||
1063 | default: | |||
1064 | return -1; | |||
1065 | case bitc::BINOP_ADD: | |||
1066 | return IsFP ? Instruction::FAdd : Instruction::Add; | |||
1067 | case bitc::BINOP_SUB: | |||
1068 | return IsFP ? Instruction::FSub : Instruction::Sub; | |||
1069 | case bitc::BINOP_MUL: | |||
1070 | return IsFP ? Instruction::FMul : Instruction::Mul; | |||
1071 | case bitc::BINOP_UDIV: | |||
1072 | return IsFP ? -1 : Instruction::UDiv; | |||
1073 | case bitc::BINOP_SDIV: | |||
1074 | return IsFP ? Instruction::FDiv : Instruction::SDiv; | |||
1075 | case bitc::BINOP_UREM: | |||
1076 | return IsFP ? -1 : Instruction::URem; | |||
1077 | case bitc::BINOP_SREM: | |||
1078 | return IsFP ? Instruction::FRem : Instruction::SRem; | |||
1079 | case bitc::BINOP_SHL: | |||
1080 | return IsFP ? -1 : Instruction::Shl; | |||
1081 | case bitc::BINOP_LSHR: | |||
1082 | return IsFP ? -1 : Instruction::LShr; | |||
1083 | case bitc::BINOP_ASHR: | |||
1084 | return IsFP ? -1 : Instruction::AShr; | |||
1085 | case bitc::BINOP_AND: | |||
1086 | return IsFP ? -1 : Instruction::And; | |||
1087 | case bitc::BINOP_OR: | |||
1088 | return IsFP ? -1 : Instruction::Or; | |||
1089 | case bitc::BINOP_XOR: | |||
1090 | return IsFP ? -1 : Instruction::Xor; | |||
1091 | } | |||
1092 | } | |||
1093 | ||||
1094 | static AtomicRMWInst::BinOp getDecodedRMWOperation(unsigned Val) { | |||
1095 | switch (Val) { | |||
1096 | default: return AtomicRMWInst::BAD_BINOP; | |||
1097 | case bitc::RMW_XCHG: return AtomicRMWInst::Xchg; | |||
1098 | case bitc::RMW_ADD: return AtomicRMWInst::Add; | |||
1099 | case bitc::RMW_SUB: return AtomicRMWInst::Sub; | |||
1100 | case bitc::RMW_AND: return AtomicRMWInst::And; | |||
1101 | case bitc::RMW_NAND: return AtomicRMWInst::Nand; | |||
1102 | case bitc::RMW_OR: return AtomicRMWInst::Or; | |||
1103 | case bitc::RMW_XOR: return AtomicRMWInst::Xor; | |||
1104 | case bitc::RMW_MAX: return AtomicRMWInst::Max; | |||
1105 | case bitc::RMW_MIN: return AtomicRMWInst::Min; | |||
1106 | case bitc::RMW_UMAX: return AtomicRMWInst::UMax; | |||
1107 | case bitc::RMW_UMIN: return AtomicRMWInst::UMin; | |||
1108 | case bitc::RMW_FADD: return AtomicRMWInst::FAdd; | |||
1109 | case bitc::RMW_FSUB: return AtomicRMWInst::FSub; | |||
1110 | } | |||
1111 | } | |||
1112 | ||||
1113 | static AtomicOrdering getDecodedOrdering(unsigned Val) { | |||
1114 | switch (Val) { | |||
1115 | case bitc::ORDERING_NOTATOMIC: return AtomicOrdering::NotAtomic; | |||
1116 | case bitc::ORDERING_UNORDERED: return AtomicOrdering::Unordered; | |||
1117 | case bitc::ORDERING_MONOTONIC: return AtomicOrdering::Monotonic; | |||
1118 | case bitc::ORDERING_ACQUIRE: return AtomicOrdering::Acquire; | |||
1119 | case bitc::ORDERING_RELEASE: return AtomicOrdering::Release; | |||
1120 | case bitc::ORDERING_ACQREL: return AtomicOrdering::AcquireRelease; | |||
1121 | default: // Map unknown orderings to sequentially-consistent. | |||
1122 | case bitc::ORDERING_SEQCST: return AtomicOrdering::SequentiallyConsistent; | |||
1123 | } | |||
1124 | } | |||
1125 | ||||
1126 | static Comdat::SelectionKind getDecodedComdatSelectionKind(unsigned Val) { | |||
1127 | switch (Val) { | |||
1128 | default: // Map unknown selection kinds to any. | |||
1129 | case bitc::COMDAT_SELECTION_KIND_ANY: | |||
1130 | return Comdat::Any; | |||
1131 | case bitc::COMDAT_SELECTION_KIND_EXACT_MATCH: | |||
1132 | return Comdat::ExactMatch; | |||
1133 | case bitc::COMDAT_SELECTION_KIND_LARGEST: | |||
1134 | return Comdat::Largest; | |||
1135 | case bitc::COMDAT_SELECTION_KIND_NO_DUPLICATES: | |||
1136 | return Comdat::NoDeduplicate; | |||
1137 | case bitc::COMDAT_SELECTION_KIND_SAME_SIZE: | |||
1138 | return Comdat::SameSize; | |||
1139 | } | |||
1140 | } | |||
1141 | ||||
1142 | static FastMathFlags getDecodedFastMathFlags(unsigned Val) { | |||
1143 | FastMathFlags FMF; | |||
1144 | if (0 != (Val & bitc::UnsafeAlgebra)) | |||
1145 | FMF.setFast(); | |||
1146 | if (0 != (Val & bitc::AllowReassoc)) | |||
1147 | FMF.setAllowReassoc(); | |||
1148 | if (0 != (Val & bitc::NoNaNs)) | |||
1149 | FMF.setNoNaNs(); | |||
1150 | if (0 != (Val & bitc::NoInfs)) | |||
1151 | FMF.setNoInfs(); | |||
1152 | if (0 != (Val & bitc::NoSignedZeros)) | |||
1153 | FMF.setNoSignedZeros(); | |||
1154 | if (0 != (Val & bitc::AllowReciprocal)) | |||
1155 | FMF.setAllowReciprocal(); | |||
1156 | if (0 != (Val & bitc::AllowContract)) | |||
1157 | FMF.setAllowContract(true); | |||
1158 | if (0 != (Val & bitc::ApproxFunc)) | |||
1159 | FMF.setApproxFunc(); | |||
1160 | return FMF; | |||
1161 | } | |||
1162 | ||||
1163 | static void upgradeDLLImportExportLinkage(GlobalValue *GV, unsigned Val) { | |||
1164 | switch (Val) { | |||
1165 | case 5: GV->setDLLStorageClass(GlobalValue::DLLImportStorageClass); break; | |||
1166 | case 6: GV->setDLLStorageClass(GlobalValue::DLLExportStorageClass); break; | |||
1167 | } | |||
1168 | } | |||
1169 | ||||
1170 | Type *BitcodeReader::getTypeByID(unsigned ID) { | |||
1171 | // The type table size is always specified correctly. | |||
1172 | if (ID >= TypeList.size()) | |||
1173 | return nullptr; | |||
1174 | ||||
1175 | if (Type *Ty = TypeList[ID]) | |||
1176 | return Ty; | |||
1177 | ||||
1178 | // If we have a forward reference, the only possible case is when it is to a | |||
1179 | // named struct. Just create a placeholder for now. | |||
1180 | return TypeList[ID] = createIdentifiedStructType(Context); | |||
1181 | } | |||
1182 | ||||
1183 | Type *BitcodeReader::getPtrElementTypeByID(unsigned ID) { | |||
1184 | if (ID >= TypeList.size()) | |||
1185 | return nullptr; | |||
1186 | ||||
1187 | Type *Ty = TypeList[ID]; | |||
1188 | if (!Ty->isPointerTy()) | |||
1189 | return nullptr; | |||
1190 | ||||
1191 | Type *ElemTy = ElementTypeList[ID]; | |||
1192 | if (!ElemTy) | |||
1193 | return nullptr; | |||
1194 | ||||
1195 | assert(cast<PointerType>(Ty)->isOpaqueOrPointeeTypeMatches(ElemTy) &&(static_cast <bool> (cast<PointerType>(Ty)->isOpaqueOrPointeeTypeMatches (ElemTy) && "Incorrect element type") ? void (0) : __assert_fail ("cast<PointerType>(Ty)->isOpaqueOrPointeeTypeMatches(ElemTy) && \"Incorrect element type\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1196, __extension__ __PRETTY_FUNCTION__)) | |||
1196 | "Incorrect element type")(static_cast <bool> (cast<PointerType>(Ty)->isOpaqueOrPointeeTypeMatches (ElemTy) && "Incorrect element type") ? void (0) : __assert_fail ("cast<PointerType>(Ty)->isOpaqueOrPointeeTypeMatches(ElemTy) && \"Incorrect element type\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1196, __extension__ __PRETTY_FUNCTION__)); | |||
1197 | return ElemTy; | |||
1198 | } | |||
1199 | ||||
1200 | StructType *BitcodeReader::createIdentifiedStructType(LLVMContext &Context, | |||
1201 | StringRef Name) { | |||
1202 | auto *Ret = StructType::create(Context, Name); | |||
1203 | IdentifiedStructTypes.push_back(Ret); | |||
1204 | return Ret; | |||
1205 | } | |||
1206 | ||||
1207 | StructType *BitcodeReader::createIdentifiedStructType(LLVMContext &Context) { | |||
1208 | auto *Ret = StructType::create(Context); | |||
1209 | IdentifiedStructTypes.push_back(Ret); | |||
1210 | return Ret; | |||
1211 | } | |||
1212 | ||||
1213 | //===----------------------------------------------------------------------===// | |||
1214 | // Functions for parsing blocks from the bitcode file | |||
1215 | //===----------------------------------------------------------------------===// | |||
1216 | ||||
1217 | static uint64_t getRawAttributeMask(Attribute::AttrKind Val) { | |||
1218 | switch (Val) { | |||
1219 | case Attribute::EndAttrKinds: | |||
1220 | case Attribute::EmptyKey: | |||
1221 | case Attribute::TombstoneKey: | |||
1222 | llvm_unreachable("Synthetic enumerators which should never get here")::llvm::llvm_unreachable_internal("Synthetic enumerators which should never get here" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1222); | |||
1223 | ||||
1224 | case Attribute::None: return 0; | |||
1225 | case Attribute::ZExt: return 1 << 0; | |||
1226 | case Attribute::SExt: return 1 << 1; | |||
1227 | case Attribute::NoReturn: return 1 << 2; | |||
1228 | case Attribute::InReg: return 1 << 3; | |||
1229 | case Attribute::StructRet: return 1 << 4; | |||
1230 | case Attribute::NoUnwind: return 1 << 5; | |||
1231 | case Attribute::NoAlias: return 1 << 6; | |||
1232 | case Attribute::ByVal: return 1 << 7; | |||
1233 | case Attribute::Nest: return 1 << 8; | |||
1234 | case Attribute::ReadNone: return 1 << 9; | |||
1235 | case Attribute::ReadOnly: return 1 << 10; | |||
1236 | case Attribute::NoInline: return 1 << 11; | |||
1237 | case Attribute::AlwaysInline: return 1 << 12; | |||
1238 | case Attribute::OptimizeForSize: return 1 << 13; | |||
1239 | case Attribute::StackProtect: return 1 << 14; | |||
1240 | case Attribute::StackProtectReq: return 1 << 15; | |||
1241 | case Attribute::Alignment: return 31 << 16; | |||
1242 | case Attribute::NoCapture: return 1 << 21; | |||
1243 | case Attribute::NoRedZone: return 1 << 22; | |||
1244 | case Attribute::NoImplicitFloat: return 1 << 23; | |||
1245 | case Attribute::Naked: return 1 << 24; | |||
1246 | case Attribute::InlineHint: return 1 << 25; | |||
1247 | case Attribute::StackAlignment: return 7 << 26; | |||
1248 | case Attribute::ReturnsTwice: return 1 << 29; | |||
1249 | case Attribute::UWTable: return 1 << 30; | |||
1250 | case Attribute::NonLazyBind: return 1U << 31; | |||
1251 | case Attribute::SanitizeAddress: return 1ULL << 32; | |||
1252 | case Attribute::MinSize: return 1ULL << 33; | |||
1253 | case Attribute::NoDuplicate: return 1ULL << 34; | |||
1254 | case Attribute::StackProtectStrong: return 1ULL << 35; | |||
1255 | case Attribute::SanitizeThread: return 1ULL << 36; | |||
1256 | case Attribute::SanitizeMemory: return 1ULL << 37; | |||
1257 | case Attribute::NoBuiltin: return 1ULL << 38; | |||
1258 | case Attribute::Returned: return 1ULL << 39; | |||
1259 | case Attribute::Cold: return 1ULL << 40; | |||
1260 | case Attribute::Builtin: return 1ULL << 41; | |||
1261 | case Attribute::OptimizeNone: return 1ULL << 42; | |||
1262 | case Attribute::InAlloca: return 1ULL << 43; | |||
1263 | case Attribute::NonNull: return 1ULL << 44; | |||
1264 | case Attribute::JumpTable: return 1ULL << 45; | |||
1265 | case Attribute::Convergent: return 1ULL << 46; | |||
1266 | case Attribute::SafeStack: return 1ULL << 47; | |||
1267 | case Attribute::NoRecurse: return 1ULL << 48; | |||
1268 | case Attribute::InaccessibleMemOnly: return 1ULL << 49; | |||
1269 | case Attribute::InaccessibleMemOrArgMemOnly: return 1ULL << 50; | |||
1270 | case Attribute::SwiftSelf: return 1ULL << 51; | |||
1271 | case Attribute::SwiftError: return 1ULL << 52; | |||
1272 | case Attribute::WriteOnly: return 1ULL << 53; | |||
1273 | case Attribute::Speculatable: return 1ULL << 54; | |||
1274 | case Attribute::StrictFP: return 1ULL << 55; | |||
1275 | case Attribute::SanitizeHWAddress: return 1ULL << 56; | |||
1276 | case Attribute::NoCfCheck: return 1ULL << 57; | |||
1277 | case Attribute::OptForFuzzing: return 1ULL << 58; | |||
1278 | case Attribute::ShadowCallStack: return 1ULL << 59; | |||
1279 | case Attribute::SpeculativeLoadHardening: | |||
1280 | return 1ULL << 60; | |||
1281 | case Attribute::ImmArg: | |||
1282 | return 1ULL << 61; | |||
1283 | case Attribute::WillReturn: | |||
1284 | return 1ULL << 62; | |||
1285 | case Attribute::NoFree: | |||
1286 | return 1ULL << 63; | |||
1287 | default: | |||
1288 | // Other attributes are not supported in the raw format, | |||
1289 | // as we ran out of space. | |||
1290 | return 0; | |||
1291 | } | |||
1292 | llvm_unreachable("Unsupported attribute type")::llvm::llvm_unreachable_internal("Unsupported attribute type" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1292); | |||
1293 | } | |||
1294 | ||||
1295 | static void addRawAttributeValue(AttrBuilder &B, uint64_t Val) { | |||
1296 | if (!Val) return; | |||
1297 | ||||
1298 | for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds; | |||
1299 | I = Attribute::AttrKind(I + 1)) { | |||
1300 | if (uint64_t A = (Val & getRawAttributeMask(I))) { | |||
1301 | if (I == Attribute::Alignment) | |||
1302 | B.addAlignmentAttr(1ULL << ((A >> 16) - 1)); | |||
1303 | else if (I == Attribute::StackAlignment) | |||
1304 | B.addStackAlignmentAttr(1ULL << ((A >> 26)-1)); | |||
1305 | else if (Attribute::isTypeAttrKind(I)) | |||
1306 | B.addTypeAttr(I, nullptr); // Type will be auto-upgraded. | |||
1307 | else | |||
1308 | B.addAttribute(I); | |||
1309 | } | |||
1310 | } | |||
1311 | } | |||
1312 | ||||
1313 | /// This fills an AttrBuilder object with the LLVM attributes that have | |||
1314 | /// been decoded from the given integer. This function must stay in sync with | |||
1315 | /// 'encodeLLVMAttributesForBitcode'. | |||
1316 | static void decodeLLVMAttributesForBitcode(AttrBuilder &B, | |||
1317 | uint64_t EncodedAttrs) { | |||
1318 | // The alignment is stored as a 16-bit raw value from bits 31--16. We shift | |||
1319 | // the bits above 31 down by 11 bits. | |||
1320 | unsigned Alignment = (EncodedAttrs & (0xffffULL << 16)) >> 16; | |||
1321 | 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.\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1322, __extension__ __PRETTY_FUNCTION__)) | |||
1322 | "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.\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1322, __extension__ __PRETTY_FUNCTION__)); | |||
1323 | ||||
1324 | if (Alignment) | |||
1325 | B.addAlignmentAttr(Alignment); | |||
1326 | addRawAttributeValue(B, ((EncodedAttrs & (0xfffffULL << 32)) >> 11) | | |||
1327 | (EncodedAttrs & 0xffff)); | |||
1328 | } | |||
1329 | ||||
1330 | Error BitcodeReader::parseAttributeBlock() { | |||
1331 | if (Error Err = Stream.EnterSubBlock(bitc::PARAMATTR_BLOCK_ID)) | |||
1332 | return Err; | |||
1333 | ||||
1334 | if (!MAttributes.empty()) | |||
1335 | return error("Invalid multiple blocks"); | |||
1336 | ||||
1337 | SmallVector<uint64_t, 64> Record; | |||
1338 | ||||
1339 | SmallVector<AttributeList, 8> Attrs; | |||
1340 | ||||
1341 | // Read all the records. | |||
1342 | while (true) { | |||
1343 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
1344 | if (!MaybeEntry) | |||
1345 | return MaybeEntry.takeError(); | |||
1346 | BitstreamEntry Entry = MaybeEntry.get(); | |||
1347 | ||||
1348 | switch (Entry.Kind) { | |||
1349 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
1350 | case BitstreamEntry::Error: | |||
1351 | return error("Malformed block"); | |||
1352 | case BitstreamEntry::EndBlock: | |||
1353 | return Error::success(); | |||
1354 | case BitstreamEntry::Record: | |||
1355 | // The interesting case. | |||
1356 | break; | |||
1357 | } | |||
1358 | ||||
1359 | // Read a record. | |||
1360 | Record.clear(); | |||
1361 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
1362 | if (!MaybeRecord) | |||
1363 | return MaybeRecord.takeError(); | |||
1364 | switch (MaybeRecord.get()) { | |||
1365 | default: // Default behavior: ignore. | |||
1366 | break; | |||
1367 | case bitc::PARAMATTR_CODE_ENTRY_OLD: // ENTRY: [paramidx0, attr0, ...] | |||
1368 | // Deprecated, but still needed to read old bitcode files. | |||
1369 | if (Record.size() & 1) | |||
1370 | return error("Invalid record"); | |||
1371 | ||||
1372 | for (unsigned i = 0, e = Record.size(); i != e; i += 2) { | |||
1373 | AttrBuilder B(Context); | |||
1374 | decodeLLVMAttributesForBitcode(B, Record[i+1]); | |||
1375 | Attrs.push_back(AttributeList::get(Context, Record[i], B)); | |||
1376 | } | |||
1377 | ||||
1378 | MAttributes.push_back(AttributeList::get(Context, Attrs)); | |||
1379 | Attrs.clear(); | |||
1380 | break; | |||
1381 | case bitc::PARAMATTR_CODE_ENTRY: // ENTRY: [attrgrp0, attrgrp1, ...] | |||
1382 | for (unsigned i = 0, e = Record.size(); i != e; ++i) | |||
1383 | Attrs.push_back(MAttributeGroups[Record[i]]); | |||
1384 | ||||
1385 | MAttributes.push_back(AttributeList::get(Context, Attrs)); | |||
1386 | Attrs.clear(); | |||
1387 | break; | |||
1388 | } | |||
1389 | } | |||
1390 | } | |||
1391 | ||||
1392 | // Returns Attribute::None on unrecognized codes. | |||
1393 | static Attribute::AttrKind getAttrFromCode(uint64_t Code) { | |||
1394 | switch (Code) { | |||
1395 | default: | |||
1396 | return Attribute::None; | |||
1397 | case bitc::ATTR_KIND_ALIGNMENT: | |||
1398 | return Attribute::Alignment; | |||
1399 | case bitc::ATTR_KIND_ALWAYS_INLINE: | |||
1400 | return Attribute::AlwaysInline; | |||
1401 | case bitc::ATTR_KIND_ARGMEMONLY: | |||
1402 | return Attribute::ArgMemOnly; | |||
1403 | case bitc::ATTR_KIND_BUILTIN: | |||
1404 | return Attribute::Builtin; | |||
1405 | case bitc::ATTR_KIND_BY_VAL: | |||
1406 | return Attribute::ByVal; | |||
1407 | case bitc::ATTR_KIND_IN_ALLOCA: | |||
1408 | return Attribute::InAlloca; | |||
1409 | case bitc::ATTR_KIND_COLD: | |||
1410 | return Attribute::Cold; | |||
1411 | case bitc::ATTR_KIND_CONVERGENT: | |||
1412 | return Attribute::Convergent; | |||
1413 | case bitc::ATTR_KIND_DISABLE_SANITIZER_INSTRUMENTATION: | |||
1414 | return Attribute::DisableSanitizerInstrumentation; | |||
1415 | case bitc::ATTR_KIND_ELEMENTTYPE: | |||
1416 | return Attribute::ElementType; | |||
1417 | case bitc::ATTR_KIND_INACCESSIBLEMEM_ONLY: | |||
1418 | return Attribute::InaccessibleMemOnly; | |||
1419 | case bitc::ATTR_KIND_INACCESSIBLEMEM_OR_ARGMEMONLY: | |||
1420 | return Attribute::InaccessibleMemOrArgMemOnly; | |||
1421 | case bitc::ATTR_KIND_INLINE_HINT: | |||
1422 | return Attribute::InlineHint; | |||
1423 | case bitc::ATTR_KIND_IN_REG: | |||
1424 | return Attribute::InReg; | |||
1425 | case bitc::ATTR_KIND_JUMP_TABLE: | |||
1426 | return Attribute::JumpTable; | |||
1427 | case bitc::ATTR_KIND_MIN_SIZE: | |||
1428 | return Attribute::MinSize; | |||
1429 | case bitc::ATTR_KIND_NAKED: | |||
1430 | return Attribute::Naked; | |||
1431 | case bitc::ATTR_KIND_NEST: | |||
1432 | return Attribute::Nest; | |||
1433 | case bitc::ATTR_KIND_NO_ALIAS: | |||
1434 | return Attribute::NoAlias; | |||
1435 | case bitc::ATTR_KIND_NO_BUILTIN: | |||
1436 | return Attribute::NoBuiltin; | |||
1437 | case bitc::ATTR_KIND_NO_CALLBACK: | |||
1438 | return Attribute::NoCallback; | |||
1439 | case bitc::ATTR_KIND_NO_CAPTURE: | |||
1440 | return Attribute::NoCapture; | |||
1441 | case bitc::ATTR_KIND_NO_DUPLICATE: | |||
1442 | return Attribute::NoDuplicate; | |||
1443 | case bitc::ATTR_KIND_NOFREE: | |||
1444 | return Attribute::NoFree; | |||
1445 | case bitc::ATTR_KIND_NO_IMPLICIT_FLOAT: | |||
1446 | return Attribute::NoImplicitFloat; | |||
1447 | case bitc::ATTR_KIND_NO_INLINE: | |||
1448 | return Attribute::NoInline; | |||
1449 | case bitc::ATTR_KIND_NO_RECURSE: | |||
1450 | return Attribute::NoRecurse; | |||
1451 | case bitc::ATTR_KIND_NO_MERGE: | |||
1452 | return Attribute::NoMerge; | |||
1453 | case bitc::ATTR_KIND_NON_LAZY_BIND: | |||
1454 | return Attribute::NonLazyBind; | |||
1455 | case bitc::ATTR_KIND_NON_NULL: | |||
1456 | return Attribute::NonNull; | |||
1457 | case bitc::ATTR_KIND_DEREFERENCEABLE: | |||
1458 | return Attribute::Dereferenceable; | |||
1459 | case bitc::ATTR_KIND_DEREFERENCEABLE_OR_NULL: | |||
1460 | return Attribute::DereferenceableOrNull; | |||
1461 | case bitc::ATTR_KIND_ALLOC_SIZE: | |||
1462 | return Attribute::AllocSize; | |||
1463 | case bitc::ATTR_KIND_NO_RED_ZONE: | |||
1464 | return Attribute::NoRedZone; | |||
1465 | case bitc::ATTR_KIND_NO_RETURN: | |||
1466 | return Attribute::NoReturn; | |||
1467 | case bitc::ATTR_KIND_NOSYNC: | |||
1468 | return Attribute::NoSync; | |||
1469 | case bitc::ATTR_KIND_NOCF_CHECK: | |||
1470 | return Attribute::NoCfCheck; | |||
1471 | case bitc::ATTR_KIND_NO_PROFILE: | |||
1472 | return Attribute::NoProfile; | |||
1473 | case bitc::ATTR_KIND_NO_UNWIND: | |||
1474 | return Attribute::NoUnwind; | |||
1475 | case bitc::ATTR_KIND_NO_SANITIZE_COVERAGE: | |||
1476 | return Attribute::NoSanitizeCoverage; | |||
1477 | case bitc::ATTR_KIND_NULL_POINTER_IS_VALID: | |||
1478 | return Attribute::NullPointerIsValid; | |||
1479 | case bitc::ATTR_KIND_OPT_FOR_FUZZING: | |||
1480 | return Attribute::OptForFuzzing; | |||
1481 | case bitc::ATTR_KIND_OPTIMIZE_FOR_SIZE: | |||
1482 | return Attribute::OptimizeForSize; | |||
1483 | case bitc::ATTR_KIND_OPTIMIZE_NONE: | |||
1484 | return Attribute::OptimizeNone; | |||
1485 | case bitc::ATTR_KIND_READ_NONE: | |||
1486 | return Attribute::ReadNone; | |||
1487 | case bitc::ATTR_KIND_READ_ONLY: | |||
1488 | return Attribute::ReadOnly; | |||
1489 | case bitc::ATTR_KIND_RETURNED: | |||
1490 | return Attribute::Returned; | |||
1491 | case bitc::ATTR_KIND_RETURNS_TWICE: | |||
1492 | return Attribute::ReturnsTwice; | |||
1493 | case bitc::ATTR_KIND_S_EXT: | |||
1494 | return Attribute::SExt; | |||
1495 | case bitc::ATTR_KIND_SPECULATABLE: | |||
1496 | return Attribute::Speculatable; | |||
1497 | case bitc::ATTR_KIND_STACK_ALIGNMENT: | |||
1498 | return Attribute::StackAlignment; | |||
1499 | case bitc::ATTR_KIND_STACK_PROTECT: | |||
1500 | return Attribute::StackProtect; | |||
1501 | case bitc::ATTR_KIND_STACK_PROTECT_REQ: | |||
1502 | return Attribute::StackProtectReq; | |||
1503 | case bitc::ATTR_KIND_STACK_PROTECT_STRONG: | |||
1504 | return Attribute::StackProtectStrong; | |||
1505 | case bitc::ATTR_KIND_SAFESTACK: | |||
1506 | return Attribute::SafeStack; | |||
1507 | case bitc::ATTR_KIND_SHADOWCALLSTACK: | |||
1508 | return Attribute::ShadowCallStack; | |||
1509 | case bitc::ATTR_KIND_STRICT_FP: | |||
1510 | return Attribute::StrictFP; | |||
1511 | case bitc::ATTR_KIND_STRUCT_RET: | |||
1512 | return Attribute::StructRet; | |||
1513 | case bitc::ATTR_KIND_SANITIZE_ADDRESS: | |||
1514 | return Attribute::SanitizeAddress; | |||
1515 | case bitc::ATTR_KIND_SANITIZE_HWADDRESS: | |||
1516 | return Attribute::SanitizeHWAddress; | |||
1517 | case bitc::ATTR_KIND_SANITIZE_THREAD: | |||
1518 | return Attribute::SanitizeThread; | |||
1519 | case bitc::ATTR_KIND_SANITIZE_MEMORY: | |||
1520 | return Attribute::SanitizeMemory; | |||
1521 | case bitc::ATTR_KIND_SPECULATIVE_LOAD_HARDENING: | |||
1522 | return Attribute::SpeculativeLoadHardening; | |||
1523 | case bitc::ATTR_KIND_SWIFT_ERROR: | |||
1524 | return Attribute::SwiftError; | |||
1525 | case bitc::ATTR_KIND_SWIFT_SELF: | |||
1526 | return Attribute::SwiftSelf; | |||
1527 | case bitc::ATTR_KIND_SWIFT_ASYNC: | |||
1528 | return Attribute::SwiftAsync; | |||
1529 | case bitc::ATTR_KIND_UW_TABLE: | |||
1530 | return Attribute::UWTable; | |||
1531 | case bitc::ATTR_KIND_VSCALE_RANGE: | |||
1532 | return Attribute::VScaleRange; | |||
1533 | case bitc::ATTR_KIND_WILLRETURN: | |||
1534 | return Attribute::WillReturn; | |||
1535 | case bitc::ATTR_KIND_WRITEONLY: | |||
1536 | return Attribute::WriteOnly; | |||
1537 | case bitc::ATTR_KIND_Z_EXT: | |||
1538 | return Attribute::ZExt; | |||
1539 | case bitc::ATTR_KIND_IMMARG: | |||
1540 | return Attribute::ImmArg; | |||
1541 | case bitc::ATTR_KIND_SANITIZE_MEMTAG: | |||
1542 | return Attribute::SanitizeMemTag; | |||
1543 | case bitc::ATTR_KIND_PREALLOCATED: | |||
1544 | return Attribute::Preallocated; | |||
1545 | case bitc::ATTR_KIND_NOUNDEF: | |||
1546 | return Attribute::NoUndef; | |||
1547 | case bitc::ATTR_KIND_BYREF: | |||
1548 | return Attribute::ByRef; | |||
1549 | case bitc::ATTR_KIND_MUSTPROGRESS: | |||
1550 | return Attribute::MustProgress; | |||
1551 | case bitc::ATTR_KIND_HOT: | |||
1552 | return Attribute::Hot; | |||
1553 | } | |||
1554 | } | |||
1555 | ||||
1556 | Error BitcodeReader::parseAlignmentValue(uint64_t Exponent, | |||
1557 | MaybeAlign &Alignment) { | |||
1558 | // Note: Alignment in bitcode files is incremented by 1, so that zero | |||
1559 | // can be used for default alignment. | |||
1560 | if (Exponent > Value::MaxAlignmentExponent + 1) | |||
1561 | return error("Invalid alignment value"); | |||
1562 | Alignment = decodeMaybeAlign(Exponent); | |||
1563 | return Error::success(); | |||
1564 | } | |||
1565 | ||||
1566 | Error BitcodeReader::parseAttrKind(uint64_t Code, Attribute::AttrKind *Kind) { | |||
1567 | *Kind = getAttrFromCode(Code); | |||
1568 | if (*Kind == Attribute::None) | |||
1569 | return error("Unknown attribute kind (" + Twine(Code) + ")"); | |||
1570 | return Error::success(); | |||
1571 | } | |||
1572 | ||||
1573 | Error BitcodeReader::parseAttributeGroupBlock() { | |||
1574 | if (Error Err = Stream.EnterSubBlock(bitc::PARAMATTR_GROUP_BLOCK_ID)) | |||
1575 | return Err; | |||
1576 | ||||
1577 | if (!MAttributeGroups.empty()) | |||
1578 | return error("Invalid multiple blocks"); | |||
1579 | ||||
1580 | SmallVector<uint64_t, 64> Record; | |||
1581 | ||||
1582 | // Read all the records. | |||
1583 | while (true) { | |||
1584 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
1585 | if (!MaybeEntry) | |||
1586 | return MaybeEntry.takeError(); | |||
1587 | BitstreamEntry Entry = MaybeEntry.get(); | |||
1588 | ||||
1589 | switch (Entry.Kind) { | |||
1590 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
1591 | case BitstreamEntry::Error: | |||
1592 | return error("Malformed block"); | |||
1593 | case BitstreamEntry::EndBlock: | |||
1594 | return Error::success(); | |||
1595 | case BitstreamEntry::Record: | |||
1596 | // The interesting case. | |||
1597 | break; | |||
1598 | } | |||
1599 | ||||
1600 | // Read a record. | |||
1601 | Record.clear(); | |||
1602 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
1603 | if (!MaybeRecord) | |||
1604 | return MaybeRecord.takeError(); | |||
1605 | switch (MaybeRecord.get()) { | |||
1606 | default: // Default behavior: ignore. | |||
1607 | break; | |||
1608 | case bitc::PARAMATTR_GRP_CODE_ENTRY: { // ENTRY: [grpid, idx, a0, a1, ...] | |||
1609 | if (Record.size() < 3) | |||
1610 | return error("Invalid record"); | |||
1611 | ||||
1612 | uint64_t GrpID = Record[0]; | |||
1613 | uint64_t Idx = Record[1]; // Index of the object this attribute refers to. | |||
1614 | ||||
1615 | AttrBuilder B(Context); | |||
1616 | for (unsigned i = 2, e = Record.size(); i != e; ++i) { | |||
1617 | if (Record[i] == 0) { // Enum attribute | |||
1618 | Attribute::AttrKind Kind; | |||
1619 | if (Error Err = parseAttrKind(Record[++i], &Kind)) | |||
1620 | return Err; | |||
1621 | ||||
1622 | // Upgrade old-style byval attribute to one with a type, even if it's | |||
1623 | // nullptr. We will have to insert the real type when we associate | |||
1624 | // this AttributeList with a function. | |||
1625 | if (Kind == Attribute::ByVal) | |||
1626 | B.addByValAttr(nullptr); | |||
1627 | else if (Kind == Attribute::StructRet) | |||
1628 | B.addStructRetAttr(nullptr); | |||
1629 | else if (Kind == Attribute::InAlloca) | |||
1630 | B.addInAllocaAttr(nullptr); | |||
1631 | else if (Attribute::isEnumAttrKind(Kind)) | |||
1632 | B.addAttribute(Kind); | |||
1633 | else | |||
1634 | return error("Not an enum attribute"); | |||
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 (!Attribute::isIntAttrKind(Kind)) | |||
1640 | return error("Not an int attribute"); | |||
1641 | if (Kind == Attribute::Alignment) | |||
1642 | B.addAlignmentAttr(Record[++i]); | |||
1643 | else if (Kind == Attribute::StackAlignment) | |||
1644 | B.addStackAlignmentAttr(Record[++i]); | |||
1645 | else if (Kind == Attribute::Dereferenceable) | |||
1646 | B.addDereferenceableAttr(Record[++i]); | |||
1647 | else if (Kind == Attribute::DereferenceableOrNull) | |||
1648 | B.addDereferenceableOrNullAttr(Record[++i]); | |||
1649 | else if (Kind == Attribute::AllocSize) | |||
1650 | B.addAllocSizeAttrFromRawRepr(Record[++i]); | |||
1651 | else if (Kind == Attribute::VScaleRange) | |||
1652 | B.addVScaleRangeAttrFromRawRepr(Record[++i]); | |||
1653 | } else if (Record[i] == 3 || Record[i] == 4) { // String attribute | |||
1654 | bool HasValue = (Record[i++] == 4); | |||
1655 | SmallString<64> KindStr; | |||
1656 | SmallString<64> ValStr; | |||
1657 | ||||
1658 | while (Record[i] != 0 && i != e) | |||
1659 | KindStr += Record[i++]; | |||
1660 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1660, __extension__ __PRETTY_FUNCTION__)); | |||
1661 | ||||
1662 | if (HasValue) { | |||
1663 | // Has a value associated with it. | |||
1664 | ++i; // Skip the '0' that terminates the "kind" string. | |||
1665 | while (Record[i] != 0 && i != e) | |||
1666 | ValStr += Record[i++]; | |||
1667 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1667, __extension__ __PRETTY_FUNCTION__)); | |||
1668 | } | |||
1669 | ||||
1670 | B.addAttribute(KindStr.str(), ValStr.str()); | |||
1671 | } else if (Record[i] == 5 || Record[i] == 6) { | |||
1672 | bool HasType = Record[i] == 6; | |||
1673 | Attribute::AttrKind Kind; | |||
1674 | if (Error Err = parseAttrKind(Record[++i], &Kind)) | |||
1675 | return Err; | |||
1676 | if (!Attribute::isTypeAttrKind(Kind)) | |||
1677 | return error("Not a type attribute"); | |||
1678 | ||||
1679 | B.addTypeAttr(Kind, HasType ? getTypeByID(Record[++i]) : nullptr); | |||
1680 | } else { | |||
1681 | return error("Invalid attribute group entry"); | |||
1682 | } | |||
1683 | } | |||
1684 | ||||
1685 | UpgradeAttributes(B); | |||
1686 | MAttributeGroups[GrpID] = AttributeList::get(Context, Idx, B); | |||
1687 | break; | |||
1688 | } | |||
1689 | } | |||
1690 | } | |||
1691 | } | |||
1692 | ||||
1693 | Error BitcodeReader::parseTypeTable() { | |||
1694 | if (Error Err = Stream.EnterSubBlock(bitc::TYPE_BLOCK_ID_NEW)) | |||
1695 | return Err; | |||
1696 | ||||
1697 | return parseTypeTableBody(); | |||
1698 | } | |||
1699 | ||||
1700 | Error BitcodeReader::parseTypeTableBody() { | |||
1701 | if (!TypeList.empty()) | |||
1702 | return error("Invalid multiple blocks"); | |||
1703 | ||||
1704 | SmallVector<uint64_t, 64> Record; | |||
1705 | unsigned NumRecords = 0; | |||
1706 | ||||
1707 | SmallString<64> TypeName; | |||
1708 | ||||
1709 | // Read all the records for this type table. | |||
1710 | while (true) { | |||
1711 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
1712 | if (!MaybeEntry) | |||
1713 | return MaybeEntry.takeError(); | |||
1714 | BitstreamEntry Entry = MaybeEntry.get(); | |||
1715 | ||||
1716 | switch (Entry.Kind) { | |||
1717 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
1718 | case BitstreamEntry::Error: | |||
1719 | return error("Malformed block"); | |||
1720 | case BitstreamEntry::EndBlock: | |||
1721 | if (NumRecords != TypeList.size()) | |||
1722 | return error("Malformed block"); | |||
1723 | return Error::success(); | |||
1724 | case BitstreamEntry::Record: | |||
1725 | // The interesting case. | |||
1726 | break; | |||
1727 | } | |||
1728 | ||||
1729 | // Read a record. | |||
1730 | Record.clear(); | |||
1731 | Type *ResultTy = nullptr; | |||
1732 | Type *ElemTy = nullptr; | |||
1733 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
1734 | if (!MaybeRecord) | |||
1735 | return MaybeRecord.takeError(); | |||
1736 | switch (MaybeRecord.get()) { | |||
1737 | default: | |||
1738 | return error("Invalid value"); | |||
1739 | case bitc::TYPE_CODE_NUMENTRY: // TYPE_CODE_NUMENTRY: [numentries] | |||
1740 | // TYPE_CODE_NUMENTRY contains a count of the number of types in the | |||
1741 | // type list. This allows us to reserve space. | |||
1742 | if (Record.empty()) | |||
1743 | return error("Invalid record"); | |||
1744 | TypeList.resize(Record[0]); | |||
1745 | ElementTypeList.resize(Record[0]); | |||
1746 | continue; | |||
1747 | case bitc::TYPE_CODE_VOID: // VOID | |||
1748 | ResultTy = Type::getVoidTy(Context); | |||
1749 | break; | |||
1750 | case bitc::TYPE_CODE_HALF: // HALF | |||
1751 | ResultTy = Type::getHalfTy(Context); | |||
1752 | break; | |||
1753 | case bitc::TYPE_CODE_BFLOAT: // BFLOAT | |||
1754 | ResultTy = Type::getBFloatTy(Context); | |||
1755 | break; | |||
1756 | case bitc::TYPE_CODE_FLOAT: // FLOAT | |||
1757 | ResultTy = Type::getFloatTy(Context); | |||
1758 | break; | |||
1759 | case bitc::TYPE_CODE_DOUBLE: // DOUBLE | |||
1760 | ResultTy = Type::getDoubleTy(Context); | |||
1761 | break; | |||
1762 | case bitc::TYPE_CODE_X86_FP80: // X86_FP80 | |||
1763 | ResultTy = Type::getX86_FP80Ty(Context); | |||
1764 | break; | |||
1765 | case bitc::TYPE_CODE_FP128: // FP128 | |||
1766 | ResultTy = Type::getFP128Ty(Context); | |||
1767 | break; | |||
1768 | case bitc::TYPE_CODE_PPC_FP128: // PPC_FP128 | |||
1769 | ResultTy = Type::getPPC_FP128Ty(Context); | |||
1770 | break; | |||
1771 | case bitc::TYPE_CODE_LABEL: // LABEL | |||
1772 | ResultTy = Type::getLabelTy(Context); | |||
1773 | break; | |||
1774 | case bitc::TYPE_CODE_METADATA: // METADATA | |||
1775 | ResultTy = Type::getMetadataTy(Context); | |||
1776 | break; | |||
1777 | case bitc::TYPE_CODE_X86_MMX: // X86_MMX | |||
1778 | ResultTy = Type::getX86_MMXTy(Context); | |||
1779 | break; | |||
1780 | case bitc::TYPE_CODE_X86_AMX: // X86_AMX | |||
1781 | ResultTy = Type::getX86_AMXTy(Context); | |||
1782 | break; | |||
1783 | case bitc::TYPE_CODE_TOKEN: // TOKEN | |||
1784 | ResultTy = Type::getTokenTy(Context); | |||
1785 | break; | |||
1786 | case bitc::TYPE_CODE_INTEGER: { // INTEGER: [width] | |||
1787 | if (Record.empty()) | |||
1788 | return error("Invalid record"); | |||
1789 | ||||
1790 | uint64_t NumBits = Record[0]; | |||
1791 | if (NumBits < IntegerType::MIN_INT_BITS || | |||
1792 | NumBits > IntegerType::MAX_INT_BITS) | |||
1793 | return error("Bitwidth for integer type out of range"); | |||
1794 | ResultTy = IntegerType::get(Context, NumBits); | |||
1795 | break; | |||
1796 | } | |||
1797 | case bitc::TYPE_CODE_POINTER: { // POINTER: [pointee type] or | |||
1798 | // [pointee type, address space] | |||
1799 | if (Record.empty()) | |||
1800 | return error("Invalid record"); | |||
1801 | unsigned AddressSpace = 0; | |||
1802 | if (Record.size() == 2) | |||
1803 | AddressSpace = Record[1]; | |||
1804 | ResultTy = getTypeByID(Record[0]); | |||
1805 | if (!ResultTy || | |||
1806 | !PointerType::isValidElementType(ResultTy)) | |||
1807 | return error("Invalid type"); | |||
1808 | ElemTy = ResultTy; | |||
1809 | ResultTy = PointerType::get(ResultTy, AddressSpace); | |||
1810 | break; | |||
1811 | } | |||
1812 | case bitc::TYPE_CODE_OPAQUE_POINTER: { // OPAQUE_POINTER: [addrspace] | |||
1813 | if (Record.size() != 1) | |||
1814 | return error("Invalid record"); | |||
1815 | if (Context.supportsTypedPointers()) | |||
1816 | return error( | |||
1817 | "Opaque pointers are only supported in -opaque-pointers mode"); | |||
1818 | unsigned AddressSpace = Record[0]; | |||
1819 | ResultTy = PointerType::get(Context, AddressSpace); | |||
1820 | break; | |||
1821 | } | |||
1822 | case bitc::TYPE_CODE_FUNCTION_OLD: { | |||
1823 | // Deprecated, but still needed to read old bitcode files. | |||
1824 | // FUNCTION: [vararg, attrid, retty, paramty x N] | |||
1825 | if (Record.size() < 3) | |||
1826 | return error("Invalid record"); | |||
1827 | SmallVector<Type*, 8> ArgTys; | |||
1828 | for (unsigned i = 3, e = Record.size(); i != e; ++i) { | |||
1829 | if (Type *T = getTypeByID(Record[i])) | |||
1830 | ArgTys.push_back(T); | |||
1831 | else | |||
1832 | break; | |||
1833 | } | |||
1834 | ||||
1835 | ResultTy = getTypeByID(Record[2]); | |||
1836 | if (!ResultTy || ArgTys.size() < Record.size()-3) | |||
1837 | return error("Invalid type"); | |||
1838 | ||||
1839 | ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]); | |||
1840 | break; | |||
1841 | } | |||
1842 | case bitc::TYPE_CODE_FUNCTION: { | |||
1843 | // FUNCTION: [vararg, retty, paramty x N] | |||
1844 | if (Record.size() < 2) | |||
1845 | return error("Invalid record"); | |||
1846 | SmallVector<Type*, 8> ArgTys; | |||
1847 | for (unsigned i = 2, e = Record.size(); i != e; ++i) { | |||
1848 | if (Type *T = getTypeByID(Record[i])) { | |||
1849 | if (!FunctionType::isValidArgumentType(T)) | |||
1850 | return error("Invalid function argument type"); | |||
1851 | ArgTys.push_back(T); | |||
1852 | } | |||
1853 | else | |||
1854 | break; | |||
1855 | } | |||
1856 | ||||
1857 | ResultTy = getTypeByID(Record[1]); | |||
1858 | if (!ResultTy || ArgTys.size() < Record.size()-2) | |||
1859 | return error("Invalid type"); | |||
1860 | ||||
1861 | ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]); | |||
1862 | break; | |||
1863 | } | |||
1864 | case bitc::TYPE_CODE_STRUCT_ANON: { // STRUCT: [ispacked, eltty x N] | |||
1865 | if (Record.empty()) | |||
1866 | return error("Invalid record"); | |||
1867 | SmallVector<Type*, 8> EltTys; | |||
1868 | for (unsigned i = 1, e = Record.size(); i != e; ++i) { | |||
1869 | if (Type *T = getTypeByID(Record[i])) | |||
1870 | EltTys.push_back(T); | |||
1871 | else | |||
1872 | break; | |||
1873 | } | |||
1874 | if (EltTys.size() != Record.size()-1) | |||
1875 | return error("Invalid type"); | |||
1876 | ResultTy = StructType::get(Context, EltTys, Record[0]); | |||
1877 | break; | |||
1878 | } | |||
1879 | case bitc::TYPE_CODE_STRUCT_NAME: // STRUCT_NAME: [strchr x N] | |||
1880 | if (convertToString(Record, 0, TypeName)) | |||
1881 | return error("Invalid record"); | |||
1882 | continue; | |||
1883 | ||||
1884 | case bitc::TYPE_CODE_STRUCT_NAMED: { // STRUCT: [ispacked, eltty x N] | |||
1885 | if (Record.empty()) | |||
1886 | return error("Invalid record"); | |||
1887 | ||||
1888 | if (NumRecords >= TypeList.size()) | |||
1889 | return error("Invalid TYPE table"); | |||
1890 | ||||
1891 | // Check to see if this was forward referenced, if so fill in the temp. | |||
1892 | StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]); | |||
1893 | if (Res) { | |||
1894 | Res->setName(TypeName); | |||
1895 | TypeList[NumRecords] = nullptr; | |||
1896 | } else // Otherwise, create a new struct. | |||
1897 | Res = createIdentifiedStructType(Context, TypeName); | |||
1898 | TypeName.clear(); | |||
1899 | ||||
1900 | SmallVector<Type*, 8> EltTys; | |||
1901 | for (unsigned i = 1, e = Record.size(); i != e; ++i) { | |||
1902 | if (Type *T = getTypeByID(Record[i])) | |||
1903 | EltTys.push_back(T); | |||
1904 | else | |||
1905 | break; | |||
1906 | } | |||
1907 | if (EltTys.size() != Record.size()-1) | |||
1908 | return error("Invalid record"); | |||
1909 | Res->setBody(EltTys, Record[0]); | |||
1910 | ResultTy = Res; | |||
1911 | break; | |||
1912 | } | |||
1913 | case bitc::TYPE_CODE_OPAQUE: { // OPAQUE: [] | |||
1914 | if (Record.size() != 1) | |||
1915 | return error("Invalid record"); | |||
1916 | ||||
1917 | if (NumRecords >= TypeList.size()) | |||
1918 | return error("Invalid TYPE table"); | |||
1919 | ||||
1920 | // Check to see if this was forward referenced, if so fill in the temp. | |||
1921 | StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]); | |||
1922 | if (Res) { | |||
1923 | Res->setName(TypeName); | |||
1924 | TypeList[NumRecords] = nullptr; | |||
1925 | } else // Otherwise, create a new struct with no body. | |||
1926 | Res = createIdentifiedStructType(Context, TypeName); | |||
1927 | TypeName.clear(); | |||
1928 | ResultTy = Res; | |||
1929 | break; | |||
1930 | } | |||
1931 | case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty] | |||
1932 | if (Record.size() < 2) | |||
1933 | return error("Invalid record"); | |||
1934 | ResultTy = getTypeByID(Record[1]); | |||
1935 | if (!ResultTy || !ArrayType::isValidElementType(ResultTy)) | |||
1936 | return error("Invalid type"); | |||
1937 | ResultTy = ArrayType::get(ResultTy, Record[0]); | |||
1938 | break; | |||
1939 | case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty] or | |||
1940 | // [numelts, eltty, scalable] | |||
1941 | if (Record.size() < 2) | |||
1942 | return error("Invalid record"); | |||
1943 | if (Record[0] == 0) | |||
1944 | return error("Invalid vector length"); | |||
1945 | ResultTy = getTypeByID(Record[1]); | |||
1946 | if (!ResultTy || !VectorType::isValidElementType(ResultTy)) | |||
1947 | return error("Invalid type"); | |||
1948 | bool Scalable = Record.size() > 2 ? Record[2] : false; | |||
1949 | ResultTy = VectorType::get(ResultTy, Record[0], Scalable); | |||
1950 | break; | |||
1951 | } | |||
1952 | ||||
1953 | if (NumRecords >= TypeList.size()) | |||
1954 | return error("Invalid TYPE table"); | |||
1955 | if (TypeList[NumRecords]) | |||
1956 | return error( | |||
1957 | "Invalid TYPE table: Only named structs can be forward referenced"); | |||
1958 | 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?\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 1958, __extension__ __PRETTY_FUNCTION__)); | |||
1959 | TypeList[NumRecords] = ResultTy; | |||
1960 | ElementTypeList[NumRecords] = ElemTy; | |||
1961 | ++NumRecords; | |||
1962 | } | |||
1963 | } | |||
1964 | ||||
1965 | Error BitcodeReader::parseOperandBundleTags() { | |||
1966 | if (Error Err = Stream.EnterSubBlock(bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID)) | |||
1967 | return Err; | |||
1968 | ||||
1969 | if (!BundleTags.empty()) | |||
1970 | return error("Invalid multiple blocks"); | |||
1971 | ||||
1972 | SmallVector<uint64_t, 64> Record; | |||
1973 | ||||
1974 | while (true) { | |||
1975 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
1976 | if (!MaybeEntry) | |||
1977 | return MaybeEntry.takeError(); | |||
1978 | BitstreamEntry Entry = MaybeEntry.get(); | |||
1979 | ||||
1980 | switch (Entry.Kind) { | |||
1981 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
1982 | case BitstreamEntry::Error: | |||
1983 | return error("Malformed block"); | |||
1984 | case BitstreamEntry::EndBlock: | |||
1985 | return Error::success(); | |||
1986 | case BitstreamEntry::Record: | |||
1987 | // The interesting case. | |||
1988 | break; | |||
1989 | } | |||
1990 | ||||
1991 | // Tags are implicitly mapped to integers by their order. | |||
1992 | ||||
1993 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
1994 | if (!MaybeRecord) | |||
1995 | return MaybeRecord.takeError(); | |||
1996 | if (MaybeRecord.get() != bitc::OPERAND_BUNDLE_TAG) | |||
1997 | return error("Invalid record"); | |||
1998 | ||||
1999 | // OPERAND_BUNDLE_TAG: [strchr x N] | |||
2000 | BundleTags.emplace_back(); | |||
2001 | if (convertToString(Record, 0, BundleTags.back())) | |||
2002 | return error("Invalid record"); | |||
2003 | Record.clear(); | |||
2004 | } | |||
2005 | } | |||
2006 | ||||
2007 | Error BitcodeReader::parseSyncScopeNames() { | |||
2008 | if (Error Err = Stream.EnterSubBlock(bitc::SYNC_SCOPE_NAMES_BLOCK_ID)) | |||
2009 | return Err; | |||
2010 | ||||
2011 | if (!SSIDs.empty()) | |||
2012 | return error("Invalid multiple synchronization scope names blocks"); | |||
2013 | ||||
2014 | SmallVector<uint64_t, 64> Record; | |||
2015 | while (true) { | |||
2016 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
2017 | if (!MaybeEntry) | |||
2018 | return MaybeEntry.takeError(); | |||
2019 | BitstreamEntry Entry = MaybeEntry.get(); | |||
2020 | ||||
2021 | switch (Entry.Kind) { | |||
2022 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
2023 | case BitstreamEntry::Error: | |||
2024 | return error("Malformed block"); | |||
2025 | case BitstreamEntry::EndBlock: | |||
2026 | if (SSIDs.empty()) | |||
2027 | return error("Invalid empty synchronization scope names block"); | |||
2028 | return Error::success(); | |||
2029 | case BitstreamEntry::Record: | |||
2030 | // The interesting case. | |||
2031 | break; | |||
2032 | } | |||
2033 | ||||
2034 | // Synchronization scope names are implicitly mapped to synchronization | |||
2035 | // scope IDs by their order. | |||
2036 | ||||
2037 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
2038 | if (!MaybeRecord) | |||
2039 | return MaybeRecord.takeError(); | |||
2040 | if (MaybeRecord.get() != bitc::SYNC_SCOPE_NAME) | |||
2041 | return error("Invalid record"); | |||
2042 | ||||
2043 | SmallString<16> SSN; | |||
2044 | if (convertToString(Record, 0, SSN)) | |||
2045 | return error("Invalid record"); | |||
2046 | ||||
2047 | SSIDs.push_back(Context.getOrInsertSyncScopeID(SSN)); | |||
2048 | Record.clear(); | |||
2049 | } | |||
2050 | } | |||
2051 | ||||
2052 | /// Associate a value with its name from the given index in the provided record. | |||
2053 | Expected<Value *> BitcodeReader::recordValue(SmallVectorImpl<uint64_t> &Record, | |||
2054 | unsigned NameIndex, Triple &TT) { | |||
2055 | SmallString<128> ValueName; | |||
2056 | if (convertToString(Record, NameIndex, ValueName)) | |||
2057 | return error("Invalid record"); | |||
2058 | unsigned ValueID = Record[0]; | |||
2059 | if (ValueID >= ValueList.size() || !ValueList[ValueID]) | |||
2060 | return error("Invalid record"); | |||
2061 | Value *V = ValueList[ValueID]; | |||
2062 | ||||
2063 | StringRef NameStr(ValueName.data(), ValueName.size()); | |||
2064 | if (NameStr.find_first_of(0) != StringRef::npos) | |||
2065 | return error("Invalid value name"); | |||
2066 | V->setName(NameStr); | |||
2067 | auto *GO = dyn_cast<GlobalObject>(V); | |||
2068 | if (GO && ImplicitComdatObjects.contains(GO) && TT.supportsCOMDAT()) | |||
2069 | GO->setComdat(TheModule->getOrInsertComdat(V->getName())); | |||
2070 | return V; | |||
2071 | } | |||
2072 | ||||
2073 | /// Helper to note and return the current location, and jump to the given | |||
2074 | /// offset. | |||
2075 | static Expected<uint64_t> jumpToValueSymbolTable(uint64_t Offset, | |||
2076 | BitstreamCursor &Stream) { | |||
2077 | // Save the current parsing location so we can jump back at the end | |||
2078 | // of the VST read. | |||
2079 | uint64_t CurrentBit = Stream.GetCurrentBitNo(); | |||
2080 | if (Error JumpFailed = Stream.JumpToBit(Offset * 32)) | |||
2081 | return std::move(JumpFailed); | |||
2082 | Expected<BitstreamEntry> MaybeEntry = Stream.advance(); | |||
2083 | if (!MaybeEntry) | |||
2084 | return MaybeEntry.takeError(); | |||
2085 | if (MaybeEntry.get().Kind != BitstreamEntry::SubBlock || | |||
2086 | MaybeEntry.get().ID != bitc::VALUE_SYMTAB_BLOCK_ID) | |||
2087 | return error("Expected value symbol table subblock"); | |||
2088 | return CurrentBit; | |||
2089 | } | |||
2090 | ||||
2091 | void BitcodeReader::setDeferredFunctionInfo(unsigned FuncBitcodeOffsetDelta, | |||
2092 | Function *F, | |||
2093 | ArrayRef<uint64_t> Record) { | |||
2094 | // Note that we subtract 1 here because the offset is relative to one word | |||
2095 | // before the start of the identification or module block, which was | |||
2096 | // historically always the start of the regular bitcode header. | |||
2097 | uint64_t FuncWordOffset = Record[1] - 1; | |||
2098 | uint64_t FuncBitOffset = FuncWordOffset * 32; | |||
2099 | DeferredFunctionInfo[F] = FuncBitOffset + FuncBitcodeOffsetDelta; | |||
2100 | // Set the LastFunctionBlockBit to point to the last function block. | |||
2101 | // Later when parsing is resumed after function materialization, | |||
2102 | // we can simply skip that last function block. | |||
2103 | if (FuncBitOffset > LastFunctionBlockBit) | |||
2104 | LastFunctionBlockBit = FuncBitOffset; | |||
2105 | } | |||
2106 | ||||
2107 | /// Read a new-style GlobalValue symbol table. | |||
2108 | Error BitcodeReader::parseGlobalValueSymbolTable() { | |||
2109 | unsigned FuncBitcodeOffsetDelta = | |||
2110 | Stream.getAbbrevIDWidth() + bitc::BlockIDWidth; | |||
2111 | ||||
2112 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) | |||
2113 | return Err; | |||
2114 | ||||
2115 | SmallVector<uint64_t, 64> Record; | |||
2116 | while (true) { | |||
2117 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
2118 | if (!MaybeEntry) | |||
2119 | return MaybeEntry.takeError(); | |||
2120 | BitstreamEntry Entry = MaybeEntry.get(); | |||
2121 | ||||
2122 | switch (Entry.Kind) { | |||
2123 | case BitstreamEntry::SubBlock: | |||
2124 | case BitstreamEntry::Error: | |||
2125 | return error("Malformed block"); | |||
2126 | case BitstreamEntry::EndBlock: | |||
2127 | return Error::success(); | |||
2128 | case BitstreamEntry::Record: | |||
2129 | break; | |||
2130 | } | |||
2131 | ||||
2132 | Record.clear(); | |||
2133 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
2134 | if (!MaybeRecord) | |||
2135 | return MaybeRecord.takeError(); | |||
2136 | switch (MaybeRecord.get()) { | |||
2137 | case bitc::VST_CODE_FNENTRY: { // [valueid, offset] | |||
2138 | unsigned ValueID = Record[0]; | |||
2139 | if (ValueID >= ValueList.size() || !ValueList[ValueID]) | |||
2140 | return error("Invalid value reference in symbol table"); | |||
2141 | setDeferredFunctionInfo(FuncBitcodeOffsetDelta, | |||
2142 | cast<Function>(ValueList[ValueID]), Record); | |||
2143 | break; | |||
2144 | } | |||
2145 | } | |||
2146 | } | |||
2147 | } | |||
2148 | ||||
2149 | /// Parse the value symbol table at either the current parsing location or | |||
2150 | /// at the given bit offset if provided. | |||
2151 | Error BitcodeReader::parseValueSymbolTable(uint64_t Offset) { | |||
2152 | uint64_t CurrentBit; | |||
2153 | // Pass in the Offset to distinguish between calling for the module-level | |||
2154 | // VST (where we want to jump to the VST offset) and the function-level | |||
2155 | // VST (where we don't). | |||
2156 | if (Offset > 0) { | |||
2157 | Expected<uint64_t> MaybeCurrentBit = jumpToValueSymbolTable(Offset, Stream); | |||
2158 | if (!MaybeCurrentBit) | |||
2159 | return MaybeCurrentBit.takeError(); | |||
2160 | CurrentBit = MaybeCurrentBit.get(); | |||
2161 | // If this module uses a string table, read this as a module-level VST. | |||
2162 | if (UseStrtab) { | |||
2163 | if (Error Err = parseGlobalValueSymbolTable()) | |||
2164 | return Err; | |||
2165 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) | |||
2166 | return JumpFailed; | |||
2167 | return Error::success(); | |||
2168 | } | |||
2169 | // Otherwise, the VST will be in a similar format to a function-level VST, | |||
2170 | // and will contain symbol names. | |||
2171 | } | |||
2172 | ||||
2173 | // Compute the delta between the bitcode indices in the VST (the word offset | |||
2174 | // to the word-aligned ENTER_SUBBLOCK for the function block, and that | |||
2175 | // expected by the lazy reader. The reader's EnterSubBlock expects to have | |||
2176 | // already read the ENTER_SUBBLOCK code (size getAbbrevIDWidth) and BlockID | |||
2177 | // (size BlockIDWidth). Note that we access the stream's AbbrevID width here | |||
2178 | // just before entering the VST subblock because: 1) the EnterSubBlock | |||
2179 | // changes the AbbrevID width; 2) the VST block is nested within the same | |||
2180 | // outer MODULE_BLOCK as the FUNCTION_BLOCKs and therefore have the same | |||
2181 | // AbbrevID width before calling EnterSubBlock; and 3) when we want to | |||
2182 | // jump to the FUNCTION_BLOCK using this offset later, we don't want | |||
2183 | // to rely on the stream's AbbrevID width being that of the MODULE_BLOCK. | |||
2184 | unsigned FuncBitcodeOffsetDelta = | |||
2185 | Stream.getAbbrevIDWidth() + bitc::BlockIDWidth; | |||
2186 | ||||
2187 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) | |||
2188 | return Err; | |||
2189 | ||||
2190 | SmallVector<uint64_t, 64> Record; | |||
2191 | ||||
2192 | Triple TT(TheModule->getTargetTriple()); | |||
2193 | ||||
2194 | // Read all the records for this value table. | |||
2195 | SmallString<128> ValueName; | |||
2196 | ||||
2197 | while (true) { | |||
2198 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
2199 | if (!MaybeEntry) | |||
2200 | return MaybeEntry.takeError(); | |||
2201 | BitstreamEntry Entry = MaybeEntry.get(); | |||
2202 | ||||
2203 | switch (Entry.Kind) { | |||
2204 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
2205 | case BitstreamEntry::Error: | |||
2206 | return error("Malformed block"); | |||
2207 | case BitstreamEntry::EndBlock: | |||
2208 | if (Offset > 0) | |||
2209 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) | |||
2210 | return JumpFailed; | |||
2211 | return Error::success(); | |||
2212 | case BitstreamEntry::Record: | |||
2213 | // The interesting case. | |||
2214 | break; | |||
2215 | } | |||
2216 | ||||
2217 | // Read a record. | |||
2218 | Record.clear(); | |||
2219 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
2220 | if (!MaybeRecord) | |||
2221 | return MaybeRecord.takeError(); | |||
2222 | switch (MaybeRecord.get()) { | |||
2223 | default: // Default behavior: unknown type. | |||
2224 | break; | |||
2225 | case bitc::VST_CODE_ENTRY: { // VST_CODE_ENTRY: [valueid, namechar x N] | |||
2226 | Expected<Value *> ValOrErr = recordValue(Record, 1, TT); | |||
2227 | if (Error Err = ValOrErr.takeError()) | |||
2228 | return Err; | |||
2229 | ValOrErr.get(); | |||
2230 | break; | |||
2231 | } | |||
2232 | case bitc::VST_CODE_FNENTRY: { | |||
2233 | // VST_CODE_FNENTRY: [valueid, offset, namechar x N] | |||
2234 | Expected<Value *> ValOrErr = recordValue(Record, 2, TT); | |||
2235 | if (Error Err = ValOrErr.takeError()) | |||
2236 | return Err; | |||
2237 | Value *V = ValOrErr.get(); | |||
2238 | ||||
2239 | // Ignore function offsets emitted for aliases of functions in older | |||
2240 | // versions of LLVM. | |||
2241 | if (auto *F = dyn_cast<Function>(V)) | |||
2242 | setDeferredFunctionInfo(FuncBitcodeOffsetDelta, F, Record); | |||
2243 | break; | |||
2244 | } | |||
2245 | case bitc::VST_CODE_BBENTRY: { | |||
2246 | if (convertToString(Record, 1, ValueName)) | |||
2247 | return error("Invalid record"); | |||
2248 | BasicBlock *BB = getBasicBlock(Record[0]); | |||
2249 | if (!BB) | |||
2250 | return error("Invalid record"); | |||
2251 | ||||
2252 | BB->setName(StringRef(ValueName.data(), ValueName.size())); | |||
2253 | ValueName.clear(); | |||
2254 | break; | |||
2255 | } | |||
2256 | } | |||
2257 | } | |||
2258 | } | |||
2259 | ||||
2260 | /// Decode a signed value stored with the sign bit in the LSB for dense VBR | |||
2261 | /// encoding. | |||
2262 | uint64_t BitcodeReader::decodeSignRotatedValue(uint64_t V) { | |||
2263 | if ((V & 1) == 0) | |||
2264 | return V >> 1; | |||
2265 | if (V != 1) | |||
2266 | return -(V >> 1); | |||
2267 | // There is no such thing as -0 with integers. "-0" really means MININT. | |||
2268 | return 1ULL << 63; | |||
2269 | } | |||
2270 | ||||
2271 | /// Resolve all of the initializers for global values and aliases that we can. | |||
2272 | Error BitcodeReader::resolveGlobalAndIndirectSymbolInits() { | |||
2273 | std::vector<std::pair<GlobalVariable *, unsigned>> GlobalInitWorklist; | |||
2274 | std::vector<std::pair<GlobalValue *, unsigned>> IndirectSymbolInitWorklist; | |||
2275 | std::vector<FunctionOperandInfo> FunctionOperandWorklist; | |||
2276 | ||||
2277 | GlobalInitWorklist.swap(GlobalInits); | |||
2278 | IndirectSymbolInitWorklist.swap(IndirectSymbolInits); | |||
2279 | FunctionOperandWorklist.swap(FunctionOperands); | |||
2280 | ||||
2281 | while (!GlobalInitWorklist.empty()) { | |||
2282 | unsigned ValID = GlobalInitWorklist.back().second; | |||
2283 | if (ValID >= ValueList.size()) { | |||
2284 | // Not ready to resolve this yet, it requires something later in the file. | |||
2285 | GlobalInits.push_back(GlobalInitWorklist.back()); | |||
2286 | } else { | |||
2287 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) | |||
2288 | GlobalInitWorklist.back().first->setInitializer(C); | |||
2289 | else | |||
2290 | return error("Expected a constant"); | |||
2291 | } | |||
2292 | GlobalInitWorklist.pop_back(); | |||
2293 | } | |||
2294 | ||||
2295 | while (!IndirectSymbolInitWorklist.empty()) { | |||
2296 | unsigned ValID = IndirectSymbolInitWorklist.back().second; | |||
2297 | if (ValID >= ValueList.size()) { | |||
2298 | IndirectSymbolInits.push_back(IndirectSymbolInitWorklist.back()); | |||
2299 | } else { | |||
2300 | Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID]); | |||
2301 | if (!C) | |||
2302 | return error("Expected a constant"); | |||
2303 | GlobalValue *GV = IndirectSymbolInitWorklist.back().first; | |||
2304 | if (auto *GA = dyn_cast<GlobalAlias>(GV)) { | |||
2305 | if (C->getType() != GV->getType()) | |||
2306 | return error("Alias and aliasee types don't match"); | |||
2307 | GA->setAliasee(C); | |||
2308 | } else if (auto *GI = dyn_cast<GlobalIFunc>(GV)) { | |||
2309 | Type *ResolverFTy = | |||
2310 | GlobalIFunc::getResolverFunctionType(GI->getValueType()); | |||
2311 | // Transparently fix up the type for compatiblity with older bitcode | |||
2312 | GI->setResolver( | |||
2313 | ConstantExpr::getBitCast(C, ResolverFTy->getPointerTo())); | |||
2314 | } else { | |||
2315 | return error("Expected an alias or an ifunc"); | |||
2316 | } | |||
2317 | } | |||
2318 | IndirectSymbolInitWorklist.pop_back(); | |||
2319 | } | |||
2320 | ||||
2321 | while (!FunctionOperandWorklist.empty()) { | |||
2322 | FunctionOperandInfo &Info = FunctionOperandWorklist.back(); | |||
2323 | if (Info.PersonalityFn) { | |||
2324 | unsigned ValID = Info.PersonalityFn - 1; | |||
2325 | if (ValID < ValueList.size()) { | |||
2326 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) | |||
2327 | Info.F->setPersonalityFn(C); | |||
2328 | else | |||
2329 | return error("Expected a constant"); | |||
2330 | Info.PersonalityFn = 0; | |||
2331 | } | |||
2332 | } | |||
2333 | if (Info.Prefix) { | |||
2334 | unsigned ValID = Info.Prefix - 1; | |||
2335 | if (ValID < ValueList.size()) { | |||
2336 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) | |||
2337 | Info.F->setPrefixData(C); | |||
2338 | else | |||
2339 | return error("Expected a constant"); | |||
2340 | Info.Prefix = 0; | |||
2341 | } | |||
2342 | } | |||
2343 | if (Info.Prologue) { | |||
2344 | unsigned ValID = Info.Prologue - 1; | |||
2345 | if (ValID < ValueList.size()) { | |||
2346 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) | |||
2347 | Info.F->setPrologueData(C); | |||
2348 | else | |||
2349 | return error("Expected a constant"); | |||
2350 | Info.Prologue = 0; | |||
2351 | } | |||
2352 | } | |||
2353 | if (Info.PersonalityFn || Info.Prefix || Info.Prologue) | |||
2354 | FunctionOperands.push_back(Info); | |||
2355 | FunctionOperandWorklist.pop_back(); | |||
2356 | } | |||
2357 | ||||
2358 | return Error::success(); | |||
2359 | } | |||
2360 | ||||
2361 | APInt llvm::readWideAPInt(ArrayRef<uint64_t> Vals, unsigned TypeBits) { | |||
2362 | SmallVector<uint64_t, 8> Words(Vals.size()); | |||
2363 | transform(Vals, Words.begin(), | |||
2364 | BitcodeReader::decodeSignRotatedValue); | |||
2365 | ||||
2366 | return APInt(TypeBits, Words); | |||
2367 | } | |||
2368 | ||||
2369 | Error BitcodeReader::parseConstants() { | |||
2370 | if (Error Err = Stream.EnterSubBlock(bitc::CONSTANTS_BLOCK_ID)) | |||
2371 | return Err; | |||
2372 | ||||
2373 | SmallVector<uint64_t, 64> Record; | |||
2374 | ||||
2375 | // Read all the records for this value table. | |||
2376 | Type *CurTy = Type::getInt32Ty(Context); | |||
2377 | Type *CurElemTy = nullptr; | |||
2378 | unsigned NextCstNo = ValueList.size(); | |||
2379 | ||||
2380 | struct DelayedShufTy { | |||
2381 | VectorType *OpTy; | |||
2382 | VectorType *RTy; | |||
2383 | uint64_t Op0Idx; | |||
2384 | uint64_t Op1Idx; | |||
2385 | uint64_t Op2Idx; | |||
2386 | unsigned CstNo; | |||
2387 | }; | |||
2388 | std::vector<DelayedShufTy> DelayedShuffles; | |||
2389 | struct DelayedSelTy { | |||
2390 | Type *OpTy; | |||
2391 | uint64_t Op0Idx; | |||
2392 | uint64_t Op1Idx; | |||
2393 | uint64_t Op2Idx; | |||
2394 | unsigned CstNo; | |||
2395 | }; | |||
2396 | std::vector<DelayedSelTy> DelayedSelectors; | |||
2397 | ||||
2398 | while (true) { | |||
2399 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
2400 | if (!MaybeEntry) | |||
2401 | return MaybeEntry.takeError(); | |||
2402 | BitstreamEntry Entry = MaybeEntry.get(); | |||
2403 | ||||
2404 | switch (Entry.Kind) { | |||
2405 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
2406 | case BitstreamEntry::Error: | |||
2407 | return error("Malformed block"); | |||
2408 | case BitstreamEntry::EndBlock: | |||
2409 | // Once all the constants have been read, go through and resolve forward | |||
2410 | // references. | |||
2411 | // | |||
2412 | // We have to treat shuffles specially because they don't have three | |||
2413 | // operands anymore. We need to convert the shuffle mask into an array, | |||
2414 | // and we can't convert a forward reference. | |||
2415 | for (auto &DelayedShuffle : DelayedShuffles) { | |||
2416 | VectorType *OpTy = DelayedShuffle.OpTy; | |||
2417 | VectorType *RTy = DelayedShuffle.RTy; | |||
2418 | uint64_t Op0Idx = DelayedShuffle.Op0Idx; | |||
2419 | uint64_t Op1Idx = DelayedShuffle.Op1Idx; | |||
2420 | uint64_t Op2Idx = DelayedShuffle.Op2Idx; | |||
2421 | uint64_t CstNo = DelayedShuffle.CstNo; | |||
2422 | Constant *Op0 = ValueList.getConstantFwdRef(Op0Idx, OpTy); | |||
2423 | Constant *Op1 = ValueList.getConstantFwdRef(Op1Idx, OpTy); | |||
2424 | Type *ShufTy = | |||
2425 | VectorType::get(Type::getInt32Ty(Context), RTy->getElementCount()); | |||
2426 | Constant *Op2 = ValueList.getConstantFwdRef(Op2Idx, ShufTy); | |||
2427 | if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2)) | |||
2428 | return error("Invalid shufflevector operands"); | |||
2429 | SmallVector<int, 16> Mask; | |||
2430 | ShuffleVectorInst::getShuffleMask(Op2, Mask); | |||
2431 | Value *V = ConstantExpr::getShuffleVector(Op0, Op1, Mask); | |||
2432 | ValueList.assignValue(V, CstNo); | |||
2433 | } | |||
2434 | for (auto &DelayedSelector : DelayedSelectors) { | |||
2435 | Type *OpTy = DelayedSelector.OpTy; | |||
2436 | Type *SelectorTy = Type::getInt1Ty(Context); | |||
2437 | uint64_t Op0Idx = DelayedSelector.Op0Idx; | |||
2438 | uint64_t Op1Idx = DelayedSelector.Op1Idx; | |||
2439 | uint64_t Op2Idx = DelayedSelector.Op2Idx; | |||
2440 | uint64_t CstNo = DelayedSelector.CstNo; | |||
2441 | Constant *Op1 = ValueList.getConstantFwdRef(Op1Idx, OpTy); | |||
2442 | Constant *Op2 = ValueList.getConstantFwdRef(Op2Idx, OpTy); | |||
2443 | // The selector might be an i1 or an <n x i1> | |||
2444 | // Get the type from the ValueList before getting a forward ref. | |||
2445 | if (VectorType *VTy = dyn_cast<VectorType>(OpTy)) { | |||
2446 | Value *V = ValueList[Op0Idx]; | |||
2447 | assert(V)(static_cast <bool> (V) ? void (0) : __assert_fail ("V" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 2447, __extension__ __PRETTY_FUNCTION__)); | |||
2448 | if (SelectorTy != V->getType()) | |||
2449 | SelectorTy = VectorType::get(SelectorTy, VTy->getElementCount()); | |||
2450 | } | |||
2451 | Constant *Op0 = ValueList.getConstantFwdRef(Op0Idx, SelectorTy); | |||
2452 | Value *V = ConstantExpr::getSelect(Op0, Op1, Op2); | |||
2453 | ValueList.assignValue(V, CstNo); | |||
2454 | } | |||
2455 | ||||
2456 | if (NextCstNo != ValueList.size()) | |||
2457 | return error("Invalid constant reference"); | |||
2458 | ||||
2459 | ValueList.resolveConstantForwardRefs(); | |||
2460 | return Error::success(); | |||
2461 | case BitstreamEntry::Record: | |||
2462 | // The interesting case. | |||
2463 | break; | |||
2464 | } | |||
2465 | ||||
2466 | // Read a record. | |||
2467 | Record.clear(); | |||
2468 | Type *VoidType = Type::getVoidTy(Context); | |||
2469 | Value *V = nullptr; | |||
2470 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | |||
2471 | if (!MaybeBitCode) | |||
2472 | return MaybeBitCode.takeError(); | |||
2473 | switch (unsigned BitCode = MaybeBitCode.get()) { | |||
2474 | default: // Default behavior: unknown constant | |||
2475 | case bitc::CST_CODE_UNDEF: // UNDEF | |||
2476 | V = UndefValue::get(CurTy); | |||
2477 | break; | |||
2478 | case bitc::CST_CODE_POISON: // POISON | |||
2479 | V = PoisonValue::get(CurTy); | |||
2480 | break; | |||
2481 | case bitc::CST_CODE_SETTYPE: // SETTYPE: [typeid] | |||
2482 | if (Record.empty()) | |||
2483 | return error("Invalid record"); | |||
2484 | if (Record[0] >= TypeList.size() || !TypeList[Record[0]]) | |||
2485 | return error("Invalid record"); | |||
2486 | if (TypeList[Record[0]] == VoidType) | |||
2487 | return error("Invalid constant type"); | |||
2488 | CurTy = TypeList[Record[0]]; | |||
2489 | CurElemTy = getPtrElementTypeByID(Record[0]); | |||
2490 | continue; // Skip the ValueList manipulation. | |||
2491 | case bitc::CST_CODE_NULL: // NULL | |||
2492 | if (CurTy->isVoidTy() || CurTy->isFunctionTy() || CurTy->isLabelTy()) | |||
2493 | return error("Invalid type for a constant null value"); | |||
2494 | V = Constant::getNullValue(CurTy); | |||
2495 | break; | |||
2496 | case bitc::CST_CODE_INTEGER: // INTEGER: [intval] | |||
2497 | if (!CurTy->isIntegerTy() || Record.empty()) | |||
2498 | return error("Invalid record"); | |||
2499 | V = ConstantInt::get(CurTy, decodeSignRotatedValue(Record[0])); | |||
2500 | break; | |||
2501 | case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n x intval] | |||
2502 | if (!CurTy->isIntegerTy() || Record.empty()) | |||
2503 | return error("Invalid record"); | |||
2504 | ||||
2505 | APInt VInt = | |||
2506 | readWideAPInt(Record, cast<IntegerType>(CurTy)->getBitWidth()); | |||
2507 | V = ConstantInt::get(Context, VInt); | |||
2508 | ||||
2509 | break; | |||
2510 | } | |||
2511 | case bitc::CST_CODE_FLOAT: { // FLOAT: [fpval] | |||
2512 | if (Record.empty()) | |||
2513 | return error("Invalid record"); | |||
2514 | if (CurTy->isHalfTy()) | |||
2515 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEhalf(), | |||
2516 | APInt(16, (uint16_t)Record[0]))); | |||
2517 | else if (CurTy->isBFloatTy()) | |||
2518 | V = ConstantFP::get(Context, APFloat(APFloat::BFloat(), | |||
2519 | APInt(16, (uint32_t)Record[0]))); | |||
2520 | else if (CurTy->isFloatTy()) | |||
2521 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEsingle(), | |||
2522 | APInt(32, (uint32_t)Record[0]))); | |||
2523 | else if (CurTy->isDoubleTy()) | |||
2524 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEdouble(), | |||
2525 | APInt(64, Record[0]))); | |||
2526 | else if (CurTy->isX86_FP80Ty()) { | |||
2527 | // Bits are not stored the same way as a normal i80 APInt, compensate. | |||
2528 | uint64_t Rearrange[2]; | |||
2529 | Rearrange[0] = (Record[1] & 0xffffLL) | (Record[0] << 16); | |||
2530 | Rearrange[1] = Record[0] >> 48; | |||
2531 | V = ConstantFP::get(Context, APFloat(APFloat::x87DoubleExtended(), | |||
2532 | APInt(80, Rearrange))); | |||
2533 | } else if (CurTy->isFP128Ty()) | |||
2534 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEquad(), | |||
2535 | APInt(128, Record))); | |||
2536 | else if (CurTy->isPPC_FP128Ty()) | |||
2537 | V = ConstantFP::get(Context, APFloat(APFloat::PPCDoubleDouble(), | |||
2538 | APInt(128, Record))); | |||
2539 | else | |||
2540 | V = UndefValue::get(CurTy); | |||
2541 | break; | |||
2542 | } | |||
2543 | ||||
2544 | case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n x value number] | |||
2545 | if (Record.empty()) | |||
2546 | return error("Invalid record"); | |||
2547 | ||||
2548 | unsigned Size = Record.size(); | |||
2549 | SmallVector<Constant*, 16> Elts; | |||
2550 | ||||
2551 | if (StructType *STy = dyn_cast<StructType>(CurTy)) { | |||
2552 | for (unsigned i = 0; i != Size; ++i) | |||
2553 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], | |||
2554 | STy->getElementType(i))); | |||
2555 | V = ConstantStruct::get(STy, Elts); | |||
2556 | } else if (ArrayType *ATy = dyn_cast<ArrayType>(CurTy)) { | |||
2557 | Type *EltTy = ATy->getElementType(); | |||
2558 | for (unsigned i = 0; i != Size; ++i) | |||
2559 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy)); | |||
2560 | V = ConstantArray::get(ATy, Elts); | |||
2561 | } else if (VectorType *VTy = dyn_cast<VectorType>(CurTy)) { | |||
2562 | Type *EltTy = VTy->getElementType(); | |||
2563 | for (unsigned i = 0; i != Size; ++i) | |||
2564 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy)); | |||
2565 | V = ConstantVector::get(Elts); | |||
2566 | } else { | |||
2567 | V = UndefValue::get(CurTy); | |||
2568 | } | |||
2569 | break; | |||
2570 | } | |||
2571 | case bitc::CST_CODE_STRING: // STRING: [values] | |||
2572 | case bitc::CST_CODE_CSTRING: { // CSTRING: [values] | |||
2573 | if (Record.empty()) | |||
2574 | return error("Invalid record"); | |||
2575 | ||||
2576 | SmallString<16> Elts(Record.begin(), Record.end()); | |||
2577 | V = ConstantDataArray::getString(Context, Elts, | |||
2578 | BitCode == bitc::CST_CODE_CSTRING); | |||
2579 | break; | |||
2580 | } | |||
2581 | case bitc::CST_CODE_DATA: {// DATA: [n x value] | |||
2582 | if (Record.empty()) | |||
2583 | return error("Invalid record"); | |||
2584 | ||||
2585 | Type *EltTy; | |||
2586 | if (auto *Array = dyn_cast<ArrayType>(CurTy)) | |||
2587 | EltTy = Array->getElementType(); | |||
2588 | else | |||
2589 | EltTy = cast<VectorType>(CurTy)->getElementType(); | |||
2590 | if (EltTy->isIntegerTy(8)) { | |||
2591 | SmallVector<uint8_t, 16> Elts(Record.begin(), Record.end()); | |||
2592 | if (isa<VectorType>(CurTy)) | |||
2593 | V = ConstantDataVector::get(Context, Elts); | |||
2594 | else | |||
2595 | V = ConstantDataArray::get(Context, Elts); | |||
2596 | } else if (EltTy->isIntegerTy(16)) { | |||
2597 | SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end()); | |||
2598 | if (isa<VectorType>(CurTy)) | |||
2599 | V = ConstantDataVector::get(Context, Elts); | |||
2600 | else | |||
2601 | V = ConstantDataArray::get(Context, Elts); | |||
2602 | } else if (EltTy->isIntegerTy(32)) { | |||
2603 | SmallVector<uint32_t, 16> Elts(Record.begin(), Record.end()); | |||
2604 | if (isa<VectorType>(CurTy)) | |||
2605 | V = ConstantDataVector::get(Context, Elts); | |||
2606 | else | |||
2607 | V = ConstantDataArray::get(Context, Elts); | |||
2608 | } else if (EltTy->isIntegerTy(64)) { | |||
2609 | SmallVector<uint64_t, 16> Elts(Record.begin(), Record.end()); | |||
2610 | if (isa<VectorType>(CurTy)) | |||
2611 | V = ConstantDataVector::get(Context, Elts); | |||
2612 | else | |||
2613 | V = ConstantDataArray::get(Context, Elts); | |||
2614 | } else if (EltTy->isHalfTy()) { | |||
2615 | SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end()); | |||
2616 | if (isa<VectorType>(CurTy)) | |||
2617 | V = ConstantDataVector::getFP(EltTy, Elts); | |||
2618 | else | |||
2619 | V = ConstantDataArray::getFP(EltTy, Elts); | |||
2620 | } else if (EltTy->isBFloatTy()) { | |||
2621 | SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end()); | |||
2622 | if (isa<VectorType>(CurTy)) | |||
2623 | V = ConstantDataVector::getFP(EltTy, Elts); | |||
2624 | else | |||
2625 | V = ConstantDataArray::getFP(EltTy, Elts); | |||
2626 | } else if (EltTy->isFloatTy()) { | |||
2627 | SmallVector<uint32_t, 16> Elts(Record.begin(), Record.end()); | |||
2628 | if (isa<VectorType>(CurTy)) | |||
2629 | V = ConstantDataVector::getFP(EltTy, Elts); | |||
2630 | else | |||
2631 | V = ConstantDataArray::getFP(EltTy, Elts); | |||
2632 | } else if (EltTy->isDoubleTy()) { | |||
2633 | SmallVector<uint64_t, 16> Elts(Record.begin(), Record.end()); | |||
2634 | if (isa<VectorType>(CurTy)) | |||
2635 | V = ConstantDataVector::getFP(EltTy, Elts); | |||
2636 | else | |||
2637 | V = ConstantDataArray::getFP(EltTy, Elts); | |||
2638 | } else { | |||
2639 | return error("Invalid type for value"); | |||
2640 | } | |||
2641 | break; | |||
2642 | } | |||
2643 | case bitc::CST_CODE_CE_UNOP: { // CE_UNOP: [opcode, opval] | |||
2644 | if (Record.size() < 2) | |||
2645 | return error("Invalid record"); | |||
2646 | int Opc = getDecodedUnaryOpcode(Record[0], CurTy); | |||
2647 | if (Opc < 0) { | |||
2648 | V = UndefValue::get(CurTy); // Unknown unop. | |||
2649 | } else { | |||
2650 | Constant *LHS = ValueList.getConstantFwdRef(Record[1], CurTy); | |||
2651 | unsigned Flags = 0; | |||
2652 | V = ConstantExpr::get(Opc, LHS, Flags); | |||
2653 | } | |||
2654 | break; | |||
2655 | } | |||
2656 | case bitc::CST_CODE_CE_BINOP: { // CE_BINOP: [opcode, opval, opval] | |||
2657 | if (Record.size() < 3) | |||
2658 | return error("Invalid record"); | |||
2659 | int Opc = getDecodedBinaryOpcode(Record[0], CurTy); | |||
2660 | if (Opc < 0) { | |||
2661 | V = UndefValue::get(CurTy); // Unknown binop. | |||
2662 | } else { | |||
2663 | Constant *LHS = ValueList.getConstantFwdRef(Record[1], CurTy); | |||
2664 | Constant *RHS = ValueList.getConstantFwdRef(Record[2], CurTy); | |||
2665 | unsigned Flags = 0; | |||
2666 | if (Record.size() >= 4) { | |||
2667 | if (Opc == Instruction::Add || | |||
2668 | Opc == Instruction::Sub || | |||
2669 | Opc == Instruction::Mul || | |||
2670 | Opc == Instruction::Shl) { | |||
2671 | if (Record[3] & (1 << bitc::OBO_NO_SIGNED_WRAP)) | |||
2672 | Flags |= OverflowingBinaryOperator::NoSignedWrap; | |||
2673 | if (Record[3] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) | |||
2674 | Flags |= OverflowingBinaryOperator::NoUnsignedWrap; | |||
2675 | } else if (Opc == Instruction::SDiv || | |||
2676 | Opc == Instruction::UDiv || | |||
2677 | Opc == Instruction::LShr || | |||
2678 | Opc == Instruction::AShr) { | |||
2679 | if (Record[3] & (1 << bitc::PEO_EXACT)) | |||
2680 | Flags |= SDivOperator::IsExact; | |||
2681 | } | |||
2682 | } | |||
2683 | V = ConstantExpr::get(Opc, LHS, RHS, Flags); | |||
2684 | } | |||
2685 | break; | |||
2686 | } | |||
2687 | case bitc::CST_CODE_CE_CAST: { // CE_CAST: [opcode, opty, opval] | |||
2688 | if (Record.size() < 3) | |||
2689 | return error("Invalid record"); | |||
2690 | int Opc = getDecodedCastOpcode(Record[0]); | |||
2691 | if (Opc < 0) { | |||
2692 | V = UndefValue::get(CurTy); // Unknown cast. | |||
2693 | } else { | |||
2694 | Type *OpTy = getTypeByID(Record[1]); | |||
2695 | if (!OpTy) | |||
2696 | return error("Invalid record"); | |||
2697 | Constant *Op = ValueList.getConstantFwdRef(Record[2], OpTy); | |||
2698 | V = UpgradeBitCastExpr(Opc, Op, CurTy); | |||
2699 | if (!V) V = ConstantExpr::getCast(Opc, Op, CurTy); | |||
2700 | } | |||
2701 | break; | |||
2702 | } | |||
2703 | case bitc::CST_CODE_CE_INBOUNDS_GEP: // [ty, n x operands] | |||
2704 | case bitc::CST_CODE_CE_GEP: // [ty, n x operands] | |||
2705 | case bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX: { // [ty, flags, n x | |||
2706 | // operands] | |||
2707 | if (Record.size() < 2) | |||
2708 | return error("Constant GEP record must have at least two elements"); | |||
2709 | unsigned OpNum = 0; | |||
2710 | Type *PointeeType = nullptr; | |||
2711 | if (BitCode == bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX || | |||
2712 | Record.size() % 2) | |||
2713 | PointeeType = getTypeByID(Record[OpNum++]); | |||
2714 | ||||
2715 | bool InBounds = false; | |||
2716 | Optional<unsigned> InRangeIndex; | |||
2717 | if (BitCode == bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX) { | |||
2718 | uint64_t Op = Record[OpNum++]; | |||
2719 | InBounds = Op & 1; | |||
2720 | InRangeIndex = Op >> 1; | |||
2721 | } else if (BitCode == bitc::CST_CODE_CE_INBOUNDS_GEP) | |||
2722 | InBounds = true; | |||
2723 | ||||
2724 | SmallVector<Constant*, 16> Elts; | |||
2725 | Type *Elt0FullTy = nullptr; | |||
2726 | while (OpNum != Record.size()) { | |||
2727 | if (!Elt0FullTy) | |||
2728 | Elt0FullTy = getTypeByID(Record[OpNum]); | |||
2729 | Type *ElTy = getTypeByID(Record[OpNum++]); | |||
2730 | if (!ElTy) | |||
2731 | return error("Invalid record"); | |||
2732 | Elts.push_back(ValueList.getConstantFwdRef(Record[OpNum++], ElTy)); | |||
2733 | } | |||
2734 | ||||
2735 | if (Elts.size() < 1) | |||
2736 | return error("Invalid gep with no operands"); | |||
2737 | ||||
2738 | PointerType *OrigPtrTy = cast<PointerType>(Elt0FullTy->getScalarType()); | |||
2739 | if (!PointeeType) | |||
2740 | PointeeType = OrigPtrTy->getPointerElementType(); | |||
2741 | else if (!OrigPtrTy->isOpaqueOrPointeeTypeMatches(PointeeType)) | |||
2742 | return error("Explicit gep operator type does not match pointee type " | |||
2743 | "of pointer operand"); | |||
2744 | ||||
2745 | ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end()); | |||
2746 | V = ConstantExpr::getGetElementPtr(PointeeType, Elts[0], Indices, | |||
2747 | InBounds, InRangeIndex); | |||
2748 | break; | |||
2749 | } | |||
2750 | case bitc::CST_CODE_CE_SELECT: { // CE_SELECT: [opval#, opval#, opval#] | |||
2751 | if (Record.size() < 3) | |||
2752 | return error("Invalid record"); | |||
2753 | ||||
2754 | DelayedSelectors.push_back( | |||
2755 | {CurTy, Record[0], Record[1], Record[2], NextCstNo}); | |||
2756 | (void)ValueList.getConstantFwdRef(NextCstNo, CurTy); | |||
2757 | ++NextCstNo; | |||
2758 | continue; | |||
2759 | } | |||
2760 | case bitc::CST_CODE_CE_EXTRACTELT | |||
2761 | : { // CE_EXTRACTELT: [opty, opval, opty, opval] | |||
2762 | if (Record.size() < 3) | |||
2763 | return error("Invalid record"); | |||
2764 | VectorType *OpTy = | |||
2765 | dyn_cast_or_null<VectorType>(getTypeByID(Record[0])); | |||
2766 | if (!OpTy) | |||
2767 | return error("Invalid record"); | |||
2768 | Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); | |||
2769 | Constant *Op1 = nullptr; | |||
2770 | if (Record.size() == 4) { | |||
2771 | Type *IdxTy = getTypeByID(Record[2]); | |||
2772 | if (!IdxTy) | |||
2773 | return error("Invalid record"); | |||
2774 | Op1 = ValueList.getConstantFwdRef(Record[3], IdxTy); | |||
2775 | } else { | |||
2776 | // Deprecated, but still needed to read old bitcode files. | |||
2777 | Op1 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context)); | |||
2778 | } | |||
2779 | if (!Op1) | |||
2780 | return error("Invalid record"); | |||
2781 | V = ConstantExpr::getExtractElement(Op0, Op1); | |||
2782 | break; | |||
2783 | } | |||
2784 | case bitc::CST_CODE_CE_INSERTELT | |||
2785 | : { // CE_INSERTELT: [opval, opval, opty, opval] | |||
2786 | VectorType *OpTy = dyn_cast<VectorType>(CurTy); | |||
2787 | if (Record.size() < 3 || !OpTy) | |||
2788 | return error("Invalid record"); | |||
2789 | Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy); | |||
2790 | Constant *Op1 = ValueList.getConstantFwdRef(Record[1], | |||
2791 | OpTy->getElementType()); | |||
2792 | Constant *Op2 = nullptr; | |||
2793 | if (Record.size() == 4) { | |||
2794 | Type *IdxTy = getTypeByID(Record[2]); | |||
2795 | if (!IdxTy) | |||
2796 | return error("Invalid record"); | |||
2797 | Op2 = ValueList.getConstantFwdRef(Record[3], IdxTy); | |||
2798 | } else { | |||
2799 | // Deprecated, but still needed to read old bitcode files. | |||
2800 | Op2 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context)); | |||
2801 | } | |||
2802 | if (!Op2) | |||
2803 | return error("Invalid record"); | |||
2804 | V = ConstantExpr::getInsertElement(Op0, Op1, Op2); | |||
2805 | break; | |||
2806 | } | |||
2807 | case bitc::CST_CODE_CE_SHUFFLEVEC: { // CE_SHUFFLEVEC: [opval, opval, opval] | |||
2808 | VectorType *OpTy = dyn_cast<VectorType>(CurTy); | |||
2809 | if (Record.size() < 3 || !OpTy) | |||
2810 | return error("Invalid record"); | |||
2811 | DelayedShuffles.push_back( | |||
2812 | {OpTy, OpTy, Record[0], Record[1], Record[2], NextCstNo}); | |||
2813 | ++NextCstNo; | |||
2814 | continue; | |||
2815 | } | |||
2816 | case bitc::CST_CODE_CE_SHUFVEC_EX: { // [opty, opval, opval, opval] | |||
2817 | VectorType *RTy = dyn_cast<VectorType>(CurTy); | |||
2818 | VectorType *OpTy = | |||
2819 | dyn_cast_or_null<VectorType>(getTypeByID(Record[0])); | |||
2820 | if (Record.size() < 4 || !RTy || !OpTy) | |||
2821 | return error("Invalid record"); | |||
2822 | DelayedShuffles.push_back( | |||
2823 | {OpTy, RTy, Record[1], Record[2], Record[3], NextCstNo}); | |||
2824 | ++NextCstNo; | |||
2825 | continue; | |||
2826 | } | |||
2827 | case bitc::CST_CODE_CE_CMP: { // CE_CMP: [opty, opval, opval, pred] | |||
2828 | if (Record.size() < 4) | |||
2829 | return error("Invalid record"); | |||
2830 | Type *OpTy = getTypeByID(Record[0]); | |||
2831 | if (!OpTy) | |||
2832 | return error("Invalid record"); | |||
2833 | Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); | |||
2834 | Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy); | |||
2835 | ||||
2836 | if (OpTy->isFPOrFPVectorTy()) | |||
2837 | V = ConstantExpr::getFCmp(Record[3], Op0, Op1); | |||
2838 | else | |||
2839 | V = ConstantExpr::getICmp(Record[3], Op0, Op1); | |||
2840 | break; | |||
2841 | } | |||
2842 | // This maintains backward compatibility, pre-asm dialect keywords. | |||
2843 | // Deprecated, but still needed to read old bitcode files. | |||
2844 | case bitc::CST_CODE_INLINEASM_OLD: { | |||
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; | |||
2850 | unsigned AsmStrSize = Record[1]; | |||
2851 | if (2+AsmStrSize >= Record.size()) | |||
2852 | return error("Invalid record"); | |||
2853 | unsigned ConstStrSize = Record[2+AsmStrSize]; | |||
2854 | if (3+AsmStrSize+ConstStrSize > Record.size()) | |||
2855 | return error("Invalid record"); | |||
2856 | ||||
2857 | for (unsigned i = 0; i != AsmStrSize; ++i) | |||
2858 | AsmStr += (char)Record[2+i]; | |||
2859 | for (unsigned i = 0; i != ConstStrSize; ++i) | |||
2860 | ConstrStr += (char)Record[3+AsmStrSize+i]; | |||
2861 | UpgradeInlineAsmString(&AsmStr); | |||
2862 | if (!CurElemTy) | |||
2863 | return error("Missing element type for old-style inlineasm"); | |||
2864 | V = InlineAsm::get(cast<FunctionType>(CurElemTy), AsmStr, ConstrStr, | |||
2865 | HasSideEffects, IsAlignStack); | |||
2866 | break; | |||
2867 | } | |||
2868 | // This version adds support for the asm dialect keywords (e.g., | |||
2869 | // inteldialect). | |||
2870 | case bitc::CST_CODE_INLINEASM_OLD2: { | |||
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; | |||
2877 | unsigned AsmStrSize = Record[1]; | |||
2878 | if (2+AsmStrSize >= Record.size()) | |||
2879 | return error("Invalid record"); | |||
2880 | unsigned ConstStrSize = Record[2+AsmStrSize]; | |||
2881 | if (3+AsmStrSize+ConstStrSize > Record.size()) | |||
2882 | return error("Invalid record"); | |||
2883 | ||||
2884 | for (unsigned i = 0; i != AsmStrSize; ++i) | |||
2885 | AsmStr += (char)Record[2+i]; | |||
2886 | for (unsigned i = 0; i != ConstStrSize; ++i) | |||
2887 | ConstrStr += (char)Record[3+AsmStrSize+i]; | |||
2888 | UpgradeInlineAsmString(&AsmStr); | |||
2889 | if (!CurElemTy) | |||
2890 | return error("Missing element type for old-style inlineasm"); | |||
2891 | V = InlineAsm::get(cast<FunctionType>(CurElemTy), AsmStr, ConstrStr, | |||
2892 | HasSideEffects, IsAlignStack, | |||
2893 | InlineAsm::AsmDialect(AsmDialect)); | |||
2894 | break; | |||
2895 | } | |||
2896 | // This version adds support for the unwind keyword. | |||
2897 | case bitc::CST_CODE_INLINEASM_OLD3: { | |||
2898 | if (Record.size() < 2) | |||
2899 | return error("Invalid record"); | |||
2900 | unsigned OpNum = 0; | |||
2901 | std::string AsmStr, ConstrStr; | |||
2902 | bool HasSideEffects = Record[OpNum] & 1; | |||
2903 | bool IsAlignStack = (Record[OpNum] >> 1) & 1; | |||
2904 | unsigned AsmDialect = (Record[OpNum] >> 2) & 1; | |||
2905 | bool CanThrow = (Record[OpNum] >> 3) & 1; | |||
2906 | ++OpNum; | |||
2907 | unsigned AsmStrSize = Record[OpNum]; | |||
2908 | ++OpNum; | |||
2909 | if (OpNum + AsmStrSize >= Record.size()) | |||
2910 | return error("Invalid record"); | |||
2911 | unsigned ConstStrSize = Record[OpNum + AsmStrSize]; | |||
2912 | if (OpNum + 1 + AsmStrSize + ConstStrSize > Record.size()) | |||
2913 | return error("Invalid record"); | |||
2914 | ||||
2915 | for (unsigned i = 0; i != AsmStrSize; ++i) | |||
2916 | AsmStr += (char)Record[OpNum + i]; | |||
2917 | ++OpNum; | |||
2918 | for (unsigned i = 0; i != ConstStrSize; ++i) | |||
2919 | ConstrStr += (char)Record[OpNum + AsmStrSize + i]; | |||
2920 | UpgradeInlineAsmString(&AsmStr); | |||
2921 | if (!CurElemTy) | |||
2922 | return error("Missing element type for old-style inlineasm"); | |||
2923 | V = InlineAsm::get(cast<FunctionType>(CurElemTy), AsmStr, ConstrStr, | |||
2924 | HasSideEffects, IsAlignStack, | |||
2925 | InlineAsm::AsmDialect(AsmDialect), CanThrow); | |||
2926 | break; | |||
2927 | } | |||
2928 | // This version adds explicit function type. | |||
2929 | case bitc::CST_CODE_INLINEASM: { | |||
2930 | if (Record.size() < 3) | |||
2931 | return error("Invalid record"); | |||
2932 | unsigned OpNum = 0; | |||
2933 | auto *FnTy = dyn_cast_or_null<FunctionType>(getTypeByID(Record[OpNum])); | |||
2934 | ++OpNum; | |||
2935 | if (!FnTy) | |||
2936 | return error("Invalid record"); | |||
2937 | std::string AsmStr, ConstrStr; | |||
2938 | bool HasSideEffects = Record[OpNum] & 1; | |||
2939 | bool IsAlignStack = (Record[OpNum] >> 1) & 1; | |||
2940 | unsigned AsmDialect = (Record[OpNum] >> 2) & 1; | |||
2941 | bool CanThrow = (Record[OpNum] >> 3) & 1; | |||
2942 | ++OpNum; | |||
2943 | unsigned AsmStrSize = Record[OpNum]; | |||
2944 | ++OpNum; | |||
2945 | if (OpNum + AsmStrSize >= Record.size()) | |||
2946 | return error("Invalid record"); | |||
2947 | unsigned ConstStrSize = Record[OpNum + AsmStrSize]; | |||
2948 | if (OpNum + 1 + AsmStrSize + ConstStrSize > Record.size()) | |||
2949 | return error("Invalid record"); | |||
2950 | ||||
2951 | for (unsigned i = 0; i != AsmStrSize; ++i) | |||
2952 | AsmStr += (char)Record[OpNum + i]; | |||
2953 | ++OpNum; | |||
2954 | for (unsigned i = 0; i != ConstStrSize; ++i) | |||
2955 | ConstrStr += (char)Record[OpNum + AsmStrSize + i]; | |||
2956 | UpgradeInlineAsmString(&AsmStr); | |||
2957 | V = InlineAsm::get(FnTy, AsmStr, ConstrStr, HasSideEffects, IsAlignStack, | |||
2958 | InlineAsm::AsmDialect(AsmDialect), CanThrow); | |||
2959 | break; | |||
2960 | } | |||
2961 | case bitc::CST_CODE_BLOCKADDRESS:{ | |||
2962 | if (Record.size() < 3) | |||
2963 | return error("Invalid record"); | |||
2964 | Type *FnTy = getTypeByID(Record[0]); | |||
2965 | if (!FnTy) | |||
2966 | return error("Invalid record"); | |||
2967 | Function *Fn = | |||
2968 | dyn_cast_or_null<Function>(ValueList.getConstantFwdRef(Record[1],FnTy)); | |||
2969 | if (!Fn) | |||
2970 | return error("Invalid record"); | |||
2971 | ||||
2972 | // If the function is already parsed we can insert the block address right | |||
2973 | // away. | |||
2974 | BasicBlock *BB; | |||
2975 | unsigned BBID = Record[2]; | |||
2976 | if (!BBID) | |||
2977 | // Invalid reference to entry block. | |||
2978 | return error("Invalid ID"); | |||
2979 | if (!Fn->empty()) { | |||
2980 | Function::iterator BBI = Fn->begin(), BBE = Fn->end(); | |||
2981 | for (size_t I = 0, E = BBID; I != E; ++I) { | |||
2982 | if (BBI == BBE) | |||
2983 | return error("Invalid ID"); | |||
2984 | ++BBI; | |||
2985 | } | |||
2986 | BB = &*BBI; | |||
2987 | } else { | |||
2988 | // Otherwise insert a placeholder and remember it so it can be inserted | |||
2989 | // when the function is parsed. | |||
2990 | auto &FwdBBs = BasicBlockFwdRefs[Fn]; | |||
2991 | if (FwdBBs.empty()) | |||
2992 | BasicBlockFwdRefQueue.push_back(Fn); | |||
2993 | if (FwdBBs.size() < BBID + 1) | |||
2994 | FwdBBs.resize(BBID + 1); | |||
2995 | if (!FwdBBs[BBID]) | |||
2996 | FwdBBs[BBID] = BasicBlock::Create(Context); | |||
2997 | BB = FwdBBs[BBID]; | |||
2998 | } | |||
2999 | V = BlockAddress::get(Fn, BB); | |||
3000 | break; | |||
3001 | } | |||
3002 | case bitc::CST_CODE_DSO_LOCAL_EQUIVALENT: { | |||
3003 | if (Record.size() < 2) | |||
3004 | return error("Invalid record"); | |||
3005 | Type *GVTy = getTypeByID(Record[0]); | |||
3006 | if (!GVTy) | |||
3007 | return error("Invalid record"); | |||
3008 | GlobalValue *GV = dyn_cast_or_null<GlobalValue>( | |||
3009 | ValueList.getConstantFwdRef(Record[1], GVTy)); | |||
3010 | if (!GV) | |||
3011 | return error("Invalid record"); | |||
3012 | ||||
3013 | V = DSOLocalEquivalent::get(GV); | |||
3014 | break; | |||
3015 | } | |||
3016 | case bitc::CST_CODE_NO_CFI_VALUE: { | |||
3017 | if (Record.size() < 2) | |||
3018 | return error("Invalid record"); | |||
3019 | Type *GVTy = getTypeByID(Record[0]); | |||
3020 | if (!GVTy) | |||
3021 | return error("Invalid record"); | |||
3022 | GlobalValue *GV = dyn_cast_or_null<GlobalValue>( | |||
3023 | ValueList.getConstantFwdRef(Record[1], GVTy)); | |||
3024 | if (!GV) | |||
3025 | return error("Invalid record"); | |||
3026 | V = NoCFIValue::get(GV); | |||
3027 | break; | |||
3028 | } | |||
3029 | } | |||
3030 | ||||
3031 | ValueList.assignValue(V, NextCstNo); | |||
3032 | ++NextCstNo; | |||
3033 | } | |||
3034 | } | |||
3035 | ||||
3036 | Error BitcodeReader::parseUseLists() { | |||
3037 | if (Error Err = Stream.EnterSubBlock(bitc::USELIST_BLOCK_ID)) | |||
3038 | return Err; | |||
3039 | ||||
3040 | // Read all the records. | |||
3041 | SmallVector<uint64_t, 64> Record; | |||
3042 | ||||
3043 | while (true) { | |||
3044 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
3045 | if (!MaybeEntry) | |||
3046 | return MaybeEntry.takeError(); | |||
3047 | BitstreamEntry Entry = MaybeEntry.get(); | |||
3048 | ||||
3049 | switch (Entry.Kind) { | |||
3050 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
3051 | case BitstreamEntry::Error: | |||
3052 | return error("Malformed block"); | |||
3053 | case BitstreamEntry::EndBlock: | |||
3054 | return Error::success(); | |||
3055 | case BitstreamEntry::Record: | |||
3056 | // The interesting case. | |||
3057 | break; | |||
3058 | } | |||
3059 | ||||
3060 | // Read a use list record. | |||
3061 | Record.clear(); | |||
3062 | bool IsBB = false; | |||
3063 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
3064 | if (!MaybeRecord) | |||
3065 | return MaybeRecord.takeError(); | |||
3066 | switch (MaybeRecord.get()) { | |||
3067 | default: // Default behavior: unknown type. | |||
3068 | break; | |||
3069 | case bitc::USELIST_CODE_BB: | |||
3070 | IsBB = true; | |||
3071 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | |||
3072 | case bitc::USELIST_CODE_DEFAULT: { | |||
3073 | unsigned RecordLength = Record.size(); | |||
3074 | if (RecordLength < 3) | |||
3075 | // Records should have at least an ID and two indexes. | |||
3076 | return error("Invalid record"); | |||
3077 | unsigned ID = Record.pop_back_val(); | |||
3078 | ||||
3079 | Value *V; | |||
3080 | if (IsBB) { | |||
3081 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3081, __extension__ __PRETTY_FUNCTION__)); | |||
3082 | V = FunctionBBs[ID]; | |||
3083 | } else | |||
3084 | V = ValueList[ID]; | |||
3085 | unsigned NumUses = 0; | |||
3086 | SmallDenseMap<const Use *, unsigned, 16> Order; | |||
3087 | for (const Use &U : V->materialized_uses()) { | |||
3088 | if (++NumUses > Record.size()) | |||
3089 | break; | |||
3090 | Order[&U] = Record[NumUses - 1]; | |||
3091 | } | |||
3092 | if (Order.size() != Record.size() || NumUses > Record.size()) | |||
3093 | // Mismatches can happen if the functions are being materialized lazily | |||
3094 | // (out-of-order), or a value has been upgraded. | |||
3095 | break; | |||
3096 | ||||
3097 | V->sortUseList([&](const Use &L, const Use &R) { | |||
3098 | return Order.lookup(&L) < Order.lookup(&R); | |||
3099 | }); | |||
3100 | break; | |||
3101 | } | |||
3102 | } | |||
3103 | } | |||
3104 | } | |||
3105 | ||||
3106 | /// When we see the block for metadata, remember where it is and then skip it. | |||
3107 | /// This lets us lazily deserialize the metadata. | |||
3108 | Error BitcodeReader::rememberAndSkipMetadata() { | |||
3109 | // Save the current stream state. | |||
3110 | uint64_t CurBit = Stream.GetCurrentBitNo(); | |||
3111 | DeferredMetadataInfo.push_back(CurBit); | |||
3112 | ||||
3113 | // Skip over the block for now. | |||
3114 | if (Error Err = Stream.SkipBlock()) | |||
3115 | return Err; | |||
3116 | return Error::success(); | |||
3117 | } | |||
3118 | ||||
3119 | Error BitcodeReader::materializeMetadata() { | |||
3120 | for (uint64_t BitPos : DeferredMetadataInfo) { | |||
3121 | // Move the bit stream to the saved position. | |||
3122 | if (Error JumpFailed = Stream.JumpToBit(BitPos)) | |||
3123 | return JumpFailed; | |||
3124 | if (Error Err = MDLoader->parseModuleMetadata()) | |||
3125 | return Err; | |||
3126 | } | |||
3127 | ||||
3128 | // Upgrade "Linker Options" module flag to "llvm.linker.options" module-level | |||
3129 | // metadata. Only upgrade if the new option doesn't exist to avoid upgrade | |||
3130 | // multiple times. | |||
3131 | if (!TheModule->getNamedMetadata("llvm.linker.options")) { | |||
3132 | if (Metadata *Val = TheModule->getModuleFlag("Linker Options")) { | |||
3133 | NamedMDNode *LinkerOpts = | |||
3134 | TheModule->getOrInsertNamedMetadata("llvm.linker.options"); | |||
3135 | for (const MDOperand &MDOptions : cast<MDNode>(Val)->operands()) | |||
3136 | LinkerOpts->addOperand(cast<MDNode>(MDOptions)); | |||
3137 | } | |||
3138 | } | |||
3139 | ||||
3140 | DeferredMetadataInfo.clear(); | |||
3141 | return Error::success(); | |||
3142 | } | |||
3143 | ||||
3144 | void BitcodeReader::setStripDebugInfo() { StripDebugInfo = true; } | |||
3145 | ||||
3146 | /// When we see the block for a function body, remember where it is and then | |||
3147 | /// skip it. This lets us lazily deserialize the functions. | |||
3148 | Error BitcodeReader::rememberAndSkipFunctionBody() { | |||
3149 | // Get the function we are talking about. | |||
3150 | if (FunctionsWithBodies.empty()) | |||
3151 | return error("Insufficient function protos"); | |||
3152 | ||||
3153 | Function *Fn = FunctionsWithBodies.back(); | |||
3154 | FunctionsWithBodies.pop_back(); | |||
3155 | ||||
3156 | // Save the current stream state. | |||
3157 | uint64_t CurBit = Stream.GetCurrentBitNo(); | |||
3158 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3160, __extension__ __PRETTY_FUNCTION__)) | |||
3159 | (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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3160, __extension__ __PRETTY_FUNCTION__)) | |||
3160 | "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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3160, __extension__ __PRETTY_FUNCTION__)); | |||
3161 | DeferredFunctionInfo[Fn] = CurBit; | |||
3162 | ||||
3163 | // Skip over the function block for now. | |||
3164 | if (Error Err = Stream.SkipBlock()) | |||
3165 | return Err; | |||
3166 | return Error::success(); | |||
3167 | } | |||
3168 | ||||
3169 | Error BitcodeReader::globalCleanup() { | |||
3170 | // Patch the initializers for globals and aliases up. | |||
3171 | if (Error Err = resolveGlobalAndIndirectSymbolInits()) | |||
3172 | return Err; | |||
3173 | if (!GlobalInits.empty() || !IndirectSymbolInits.empty()) | |||
3174 | return error("Malformed global initializer set"); | |||
3175 | ||||
3176 | // Look for intrinsic functions which need to be upgraded at some point | |||
3177 | // and functions that need to have their function attributes upgraded. | |||
3178 | for (Function &F : *TheModule) { | |||
3179 | MDLoader->upgradeDebugIntrinsics(F); | |||
3180 | Function *NewFn; | |||
3181 | if (UpgradeIntrinsicFunction(&F, NewFn)) | |||
3182 | UpgradedIntrinsics[&F] = NewFn; | |||
3183 | else if (auto Remangled = Intrinsic::remangleIntrinsicFunction(&F)) | |||
3184 | // Some types could be renamed during loading if several modules are | |||
3185 | // loaded in the same LLVMContext (LTO scenario). In this case we should | |||
3186 | // remangle intrinsics names as well. | |||
3187 | RemangledIntrinsics[&F] = Remangled.getValue(); | |||
3188 | // Look for functions that rely on old function attribute behavior. | |||
3189 | UpgradeFunctionAttributes(F); | |||
3190 | } | |||
3191 | ||||
3192 | // Look for global variables which need to be renamed. | |||
3193 | std::vector<std::pair<GlobalVariable *, GlobalVariable *>> UpgradedVariables; | |||
3194 | for (GlobalVariable &GV : TheModule->globals()) | |||
3195 | if (GlobalVariable *Upgraded = UpgradeGlobalVariable(&GV)) | |||
3196 | UpgradedVariables.emplace_back(&GV, Upgraded); | |||
3197 | for (auto &Pair : UpgradedVariables) { | |||
3198 | Pair.first->eraseFromParent(); | |||
3199 | TheModule->getGlobalList().push_back(Pair.second); | |||
3200 | } | |||
3201 | ||||
3202 | // Force deallocation of memory for these vectors to favor the client that | |||
3203 | // want lazy deserialization. | |||
3204 | std::vector<std::pair<GlobalVariable *, unsigned>>().swap(GlobalInits); | |||
3205 | std::vector<std::pair<GlobalValue *, unsigned>>().swap(IndirectSymbolInits); | |||
3206 | return Error::success(); | |||
3207 | } | |||
3208 | ||||
3209 | /// Support for lazy parsing of function bodies. This is required if we | |||
3210 | /// either have an old bitcode file without a VST forward declaration record, | |||
3211 | /// or if we have an anonymous function being materialized, since anonymous | |||
3212 | /// functions do not have a name and are therefore not in the VST. | |||
3213 | Error BitcodeReader::rememberAndSkipFunctionBodies() { | |||
3214 | if (Error JumpFailed = Stream.JumpToBit(NextUnreadBit)) | |||
3215 | return JumpFailed; | |||
3216 | ||||
3217 | if (Stream.AtEndOfStream()) | |||
3218 | return error("Could not find function in stream"); | |||
3219 | ||||
3220 | if (!SeenFirstFunctionBody) | |||
3221 | return error("Trying to materialize functions before seeing function blocks"); | |||
3222 | ||||
3223 | // An old bitcode file with the symbol table at the end would have | |||
3224 | // finished the parse greedily. | |||
3225 | assert(SeenValueSymbolTable)(static_cast <bool> (SeenValueSymbolTable) ? void (0) : __assert_fail ("SeenValueSymbolTable", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3225, __extension__ __PRETTY_FUNCTION__)); | |||
3226 | ||||
3227 | SmallVector<uint64_t, 64> Record; | |||
3228 | ||||
3229 | while (true) { | |||
3230 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | |||
3231 | if (!MaybeEntry) | |||
3232 | return MaybeEntry.takeError(); | |||
3233 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | |||
3234 | ||||
3235 | switch (Entry.Kind) { | |||
3236 | default: | |||
3237 | return error("Expect SubBlock"); | |||
3238 | case BitstreamEntry::SubBlock: | |||
3239 | switch (Entry.ID) { | |||
3240 | default: | |||
3241 | return error("Expect function block"); | |||
3242 | case bitc::FUNCTION_BLOCK_ID: | |||
3243 | if (Error Err = rememberAndSkipFunctionBody()) | |||
3244 | return Err; | |||
3245 | NextUnreadBit = Stream.GetCurrentBitNo(); | |||
3246 | return Error::success(); | |||
3247 | } | |||
3248 | } | |||
3249 | } | |||
3250 | } | |||
3251 | ||||
3252 | Error BitcodeReaderBase::readBlockInfo() { | |||
3253 | Expected<Optional<BitstreamBlockInfo>> MaybeNewBlockInfo = | |||
3254 | Stream.ReadBlockInfoBlock(); | |||
3255 | if (!MaybeNewBlockInfo) | |||
3256 | return MaybeNewBlockInfo.takeError(); | |||
3257 | Optional<BitstreamBlockInfo> NewBlockInfo = | |||
3258 | std::move(MaybeNewBlockInfo.get()); | |||
3259 | if (!NewBlockInfo) | |||
3260 | return error("Malformed block"); | |||
3261 | BlockInfo = std::move(*NewBlockInfo); | |||
3262 | return Error::success(); | |||
3263 | } | |||
3264 | ||||
3265 | Error BitcodeReader::parseComdatRecord(ArrayRef<uint64_t> Record) { | |||
3266 | // v1: [selection_kind, name] | |||
3267 | // v2: [strtab_offset, strtab_size, selection_kind] | |||
3268 | StringRef Name; | |||
3269 | std::tie(Name, Record) = readNameFromStrtab(Record); | |||
3270 | ||||
3271 | if (Record.empty()) | |||
3272 | return error("Invalid record"); | |||
3273 | Comdat::SelectionKind SK = getDecodedComdatSelectionKind(Record[0]); | |||
3274 | std::string OldFormatName; | |||
3275 | if (!UseStrtab) { | |||
3276 | if (Record.size() < 2) | |||
3277 | return error("Invalid record"); | |||
3278 | unsigned ComdatNameSize = Record[1]; | |||
3279 | if (ComdatNameSize > Record.size() - 2) | |||
3280 | return error("Comdat name size too large"); | |||
3281 | OldFormatName.reserve(ComdatNameSize); | |||
3282 | for (unsigned i = 0; i != ComdatNameSize; ++i) | |||
3283 | OldFormatName += (char)Record[2 + i]; | |||
3284 | Name = OldFormatName; | |||
3285 | } | |||
3286 | Comdat *C = TheModule->getOrInsertComdat(Name); | |||
3287 | C->setSelectionKind(SK); | |||
3288 | ComdatList.push_back(C); | |||
3289 | return Error::success(); | |||
3290 | } | |||
3291 | ||||
3292 | static void inferDSOLocal(GlobalValue *GV) { | |||
3293 | // infer dso_local from linkage and visibility if it is not encoded. | |||
3294 | if (GV->hasLocalLinkage() || | |||
3295 | (!GV->hasDefaultVisibility() && !GV->hasExternalWeakLinkage())) | |||
3296 | GV->setDSOLocal(true); | |||
3297 | } | |||
3298 | ||||
3299 | Error BitcodeReader::parseGlobalVarRecord(ArrayRef<uint64_t> Record) { | |||
3300 | // v1: [pointer type, isconst, initid, linkage, alignment, section, | |||
3301 | // visibility, threadlocal, unnamed_addr, externally_initialized, | |||
3302 | // dllstorageclass, comdat, attributes, preemption specifier, | |||
3303 | // partition strtab offset, partition strtab size] (name in VST) | |||
3304 | // v2: [strtab_offset, strtab_size, v1] | |||
3305 | StringRef Name; | |||
3306 | std::tie(Name, Record) = readNameFromStrtab(Record); | |||
3307 | ||||
3308 | if (Record.size() < 6) | |||
3309 | return error("Invalid record"); | |||
3310 | Type *Ty = getTypeByID(Record[0]); | |||
3311 | if (!Ty) | |||
3312 | return error("Invalid record"); | |||
3313 | bool isConstant = Record[1] & 1; | |||
3314 | bool explicitType = Record[1] & 2; | |||
3315 | unsigned AddressSpace; | |||
3316 | if (explicitType) { | |||
3317 | AddressSpace = Record[1] >> 2; | |||
3318 | } else { | |||
3319 | if (!Ty->isPointerTy()) | |||
3320 | return error("Invalid type for value"); | |||
3321 | AddressSpace = cast<PointerType>(Ty)->getAddressSpace(); | |||
3322 | Ty = getPtrElementTypeByID(Record[0]); | |||
3323 | if (!Ty) | |||
3324 | return error("Missing element type for old-style global"); | |||
3325 | } | |||
3326 | ||||
3327 | uint64_t RawLinkage = Record[3]; | |||
3328 | GlobalValue::LinkageTypes Linkage = getDecodedLinkage(RawLinkage); | |||
3329 | MaybeAlign Alignment; | |||
3330 | if (Error Err = parseAlignmentValue(Record[4], Alignment)) | |||
3331 | return Err; | |||
3332 | std::string Section; | |||
3333 | if (Record[5]) { | |||
3334 | if (Record[5] - 1 >= SectionTable.size()) | |||
3335 | return error("Invalid ID"); | |||
3336 | Section = SectionTable[Record[5] - 1]; | |||
3337 | } | |||
3338 | GlobalValue::VisibilityTypes Visibility = GlobalValue::DefaultVisibility; | |||
3339 | // Local linkage must have default visibility. | |||
3340 | // auto-upgrade `hidden` and `protected` for old bitcode. | |||
3341 | if (Record.size() > 6 && !GlobalValue::isLocalLinkage(Linkage)) | |||
3342 | Visibility = getDecodedVisibility(Record[6]); | |||
3343 | ||||
3344 | GlobalVariable::ThreadLocalMode TLM = GlobalVariable::NotThreadLocal; | |||
3345 | if (Record.size() > 7) | |||
3346 | TLM = getDecodedThreadLocalMode(Record[7]); | |||
3347 | ||||
3348 | GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None; | |||
3349 | if (Record.size() > 8) | |||
3350 | UnnamedAddr = getDecodedUnnamedAddrType(Record[8]); | |||
3351 | ||||
3352 | bool ExternallyInitialized = false; | |||
3353 | if (Record.size() > 9) | |||
3354 | ExternallyInitialized = Record[9]; | |||
3355 | ||||
3356 | GlobalVariable *NewGV = | |||
3357 | new GlobalVariable(*TheModule, Ty, isConstant, Linkage, nullptr, Name, | |||
3358 | nullptr, TLM, AddressSpace, ExternallyInitialized); | |||
3359 | NewGV->setAlignment(Alignment); | |||
3360 | if (!Section.empty()) | |||
3361 | NewGV->setSection(Section); | |||
3362 | NewGV->setVisibility(Visibility); | |||
3363 | NewGV->setUnnamedAddr(UnnamedAddr); | |||
3364 | ||||
3365 | if (Record.size() > 10) | |||
3366 | NewGV->setDLLStorageClass(getDecodedDLLStorageClass(Record[10])); | |||
3367 | else | |||
3368 | upgradeDLLImportExportLinkage(NewGV, RawLinkage); | |||
3369 | ||||
3370 | ValueList.push_back(NewGV); | |||
3371 | ||||
3372 | // Remember which value to use for the global initializer. | |||
3373 | if (unsigned InitID = Record[2]) | |||
3374 | GlobalInits.push_back(std::make_pair(NewGV, InitID - 1)); | |||
3375 | ||||
3376 | if (Record.size() > 11) { | |||
3377 | if (unsigned ComdatID = Record[11]) { | |||
3378 | if (ComdatID > ComdatList.size()) | |||
3379 | return error("Invalid global variable comdat ID"); | |||
3380 | NewGV->setComdat(ComdatList[ComdatID - 1]); | |||
3381 | } | |||
3382 | } else if (hasImplicitComdat(RawLinkage)) { | |||
3383 | ImplicitComdatObjects.insert(NewGV); | |||
3384 | } | |||
3385 | ||||
3386 | if (Record.size() > 12) { | |||
3387 | auto AS = getAttributes(Record[12]).getFnAttrs(); | |||
3388 | NewGV->setAttributes(AS); | |||
3389 | } | |||
3390 | ||||
3391 | if (Record.size() > 13) { | |||
3392 | NewGV->setDSOLocal(getDecodedDSOLocal(Record[13])); | |||
3393 | } | |||
3394 | inferDSOLocal(NewGV); | |||
3395 | ||||
3396 | // Check whether we have enough values to read a partition name. | |||
3397 | if (Record.size() > 15) | |||
3398 | NewGV->setPartition(StringRef(Strtab.data() + Record[14], Record[15])); | |||
3399 | ||||
3400 | return Error::success(); | |||
3401 | } | |||
3402 | ||||
3403 | Error BitcodeReader::parseFunctionRecord(ArrayRef<uint64_t> Record) { | |||
3404 | // v1: [type, callingconv, isproto, linkage, paramattr, alignment, section, | |||
3405 | // visibility, gc, unnamed_addr, prologuedata, dllstorageclass, comdat, | |||
3406 | // prefixdata, personalityfn, preemption specifier, addrspace] (name in VST) | |||
3407 | // v2: [strtab_offset, strtab_size, v1] | |||
3408 | StringRef Name; | |||
3409 | std::tie(Name, Record) = readNameFromStrtab(Record); | |||
3410 | ||||
3411 | if (Record.size() < 8) | |||
3412 | return error("Invalid record"); | |||
3413 | Type *FTy = getTypeByID(Record[0]); | |||
3414 | if (!FTy) | |||
3415 | return error("Invalid record"); | |||
3416 | if (isa<PointerType>(FTy)) { | |||
3417 | FTy = getPtrElementTypeByID(Record[0]); | |||
3418 | if (!FTy) | |||
3419 | return error("Missing element type for old-style function"); | |||
3420 | } | |||
3421 | ||||
3422 | if (!isa<FunctionType>(FTy)) | |||
3423 | return error("Invalid type for value"); | |||
3424 | auto CC = static_cast<CallingConv::ID>(Record[1]); | |||
3425 | if (CC & ~CallingConv::MaxID) | |||
3426 | return error("Invalid calling convention ID"); | |||
3427 | ||||
3428 | unsigned AddrSpace = TheModule->getDataLayout().getProgramAddressSpace(); | |||
3429 | if (Record.size() > 16) | |||
3430 | AddrSpace = Record[16]; | |||
3431 | ||||
3432 | Function *Func = | |||
3433 | Function::Create(cast<FunctionType>(FTy), GlobalValue::ExternalLinkage, | |||
3434 | AddrSpace, Name, TheModule); | |||
3435 | ||||
3436 | assert(Func->getFunctionType() == FTy &&(static_cast <bool> (Func->getFunctionType() == FTy && "Incorrect fully specified type provided for function") ? void (0) : __assert_fail ("Func->getFunctionType() == FTy && \"Incorrect fully specified type provided for function\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3437, __extension__ __PRETTY_FUNCTION__)) | |||
3437 | "Incorrect fully specified type provided for function")(static_cast <bool> (Func->getFunctionType() == FTy && "Incorrect fully specified type provided for function") ? void (0) : __assert_fail ("Func->getFunctionType() == FTy && \"Incorrect fully specified type provided for function\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3437, __extension__ __PRETTY_FUNCTION__)); | |||
3438 | FunctionTypes[Func] = cast<FunctionType>(FTy); | |||
3439 | ||||
3440 | Func->setCallingConv(CC); | |||
3441 | bool isProto = Record[2]; | |||
3442 | uint64_t RawLinkage = Record[3]; | |||
3443 | Func->setLinkage(getDecodedLinkage(RawLinkage)); | |||
3444 | Func->setAttributes(getAttributes(Record[4])); | |||
3445 | ||||
3446 | // Upgrade any old-style byval or sret without a type by propagating the | |||
3447 | // argument's pointee type. There should be no opaque pointers where the byval | |||
3448 | // type is implicit. | |||
3449 | for (unsigned i = 0; i != Func->arg_size(); ++i) { | |||
3450 | for (Attribute::AttrKind Kind : {Attribute::ByVal, Attribute::StructRet, | |||
3451 | Attribute::InAlloca}) { | |||
3452 | if (!Func->hasParamAttribute(i, Kind)) | |||
3453 | continue; | |||
3454 | ||||
3455 | if (Func->getParamAttribute(i, Kind).getValueAsType()) | |||
3456 | continue; | |||
3457 | ||||
3458 | Func->removeParamAttr(i, Kind); | |||
3459 | ||||
3460 | Type *PTy = cast<FunctionType>(FTy)->getParamType(i); | |||
3461 | Type *PtrEltTy = PTy->getPointerElementType(); | |||
3462 | Attribute NewAttr; | |||
3463 | switch (Kind) { | |||
3464 | case Attribute::ByVal: | |||
3465 | NewAttr = Attribute::getWithByValType(Context, PtrEltTy); | |||
3466 | break; | |||
3467 | case Attribute::StructRet: | |||
3468 | NewAttr = Attribute::getWithStructRetType(Context, PtrEltTy); | |||
3469 | break; | |||
3470 | case Attribute::InAlloca: | |||
3471 | NewAttr = Attribute::getWithInAllocaType(Context, PtrEltTy); | |||
3472 | break; | |||
3473 | default: | |||
3474 | llvm_unreachable("not an upgraded type attribute")::llvm::llvm_unreachable_internal("not an upgraded type attribute" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3474); | |||
3475 | } | |||
3476 | ||||
3477 | Func->addParamAttr(i, NewAttr); | |||
3478 | } | |||
3479 | } | |||
3480 | ||||
3481 | MaybeAlign Alignment; | |||
3482 | if (Error Err = parseAlignmentValue(Record[5], Alignment)) | |||
3483 | return Err; | |||
3484 | Func->setAlignment(Alignment); | |||
3485 | if (Record[6]) { | |||
3486 | if (Record[6] - 1 >= SectionTable.size()) | |||
3487 | return error("Invalid ID"); | |||
3488 | Func->setSection(SectionTable[Record[6] - 1]); | |||
3489 | } | |||
3490 | // Local linkage must have default visibility. | |||
3491 | // auto-upgrade `hidden` and `protected` for old bitcode. | |||
3492 | if (!Func->hasLocalLinkage()) | |||
3493 | Func->setVisibility(getDecodedVisibility(Record[7])); | |||
3494 | if (Record.size() > 8 && Record[8]) { | |||
3495 | if (Record[8] - 1 >= GCTable.size()) | |||
3496 | return error("Invalid ID"); | |||
3497 | Func->setGC(GCTable[Record[8] - 1]); | |||
3498 | } | |||
3499 | GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None; | |||
3500 | if (Record.size() > 9) | |||
3501 | UnnamedAddr = getDecodedUnnamedAddrType(Record[9]); | |||
3502 | Func->setUnnamedAddr(UnnamedAddr); | |||
3503 | ||||
3504 | FunctionOperandInfo OperandInfo = {Func, 0, 0, 0}; | |||
3505 | if (Record.size() > 10) | |||
3506 | OperandInfo.Prologue = Record[10]; | |||
3507 | ||||
3508 | if (Record.size() > 11) | |||
3509 | Func->setDLLStorageClass(getDecodedDLLStorageClass(Record[11])); | |||
3510 | else | |||
3511 | upgradeDLLImportExportLinkage(Func, RawLinkage); | |||
3512 | ||||
3513 | if (Record.size() > 12) { | |||
3514 | if (unsigned ComdatID = Record[12]) { | |||
3515 | if (ComdatID > ComdatList.size()) | |||
3516 | return error("Invalid function comdat ID"); | |||
3517 | Func->setComdat(ComdatList[ComdatID - 1]); | |||
3518 | } | |||
3519 | } else if (hasImplicitComdat(RawLinkage)) { | |||
3520 | ImplicitComdatObjects.insert(Func); | |||
3521 | } | |||
3522 | ||||
3523 | if (Record.size() > 13) | |||
3524 | OperandInfo.Prefix = Record[13]; | |||
3525 | ||||
3526 | if (Record.size() > 14) | |||
3527 | OperandInfo.PersonalityFn = Record[14]; | |||
3528 | ||||
3529 | if (Record.size() > 15) { | |||
3530 | Func->setDSOLocal(getDecodedDSOLocal(Record[15])); | |||
3531 | } | |||
3532 | inferDSOLocal(Func); | |||
3533 | ||||
3534 | // Record[16] is the address space number. | |||
3535 | ||||
3536 | // Check whether we have enough values to read a partition name. Also make | |||
3537 | // sure Strtab has enough values. | |||
3538 | if (Record.size() > 18 && Strtab.data() && | |||
3539 | Record[17] + Record[18] <= Strtab.size()) { | |||
3540 | Func->setPartition(StringRef(Strtab.data() + Record[17], Record[18])); | |||
3541 | } | |||
3542 | ||||
3543 | ValueList.push_back(Func); | |||
3544 | ||||
3545 | if (OperandInfo.PersonalityFn || OperandInfo.Prefix || OperandInfo.Prologue) | |||
3546 | FunctionOperands.push_back(OperandInfo); | |||
3547 | ||||
3548 | // If this is a function with a body, remember the prototype we are | |||
3549 | // creating now, so that we can match up the body with them later. | |||
3550 | if (!isProto) { | |||
3551 | Func->setIsMaterializable(true); | |||
3552 | FunctionsWithBodies.push_back(Func); | |||
3553 | DeferredFunctionInfo[Func] = 0; | |||
3554 | } | |||
3555 | return Error::success(); | |||
3556 | } | |||
3557 | ||||
3558 | Error BitcodeReader::parseGlobalIndirectSymbolRecord( | |||
3559 | unsigned BitCode, ArrayRef<uint64_t> Record) { | |||
3560 | // v1 ALIAS_OLD: [alias type, aliasee val#, linkage] (name in VST) | |||
3561 | // v1 ALIAS: [alias type, addrspace, aliasee val#, linkage, visibility, | |||
3562 | // dllstorageclass, threadlocal, unnamed_addr, | |||
3563 | // preemption specifier] (name in VST) | |||
3564 | // v1 IFUNC: [alias type, addrspace, aliasee val#, linkage, | |||
3565 | // visibility, dllstorageclass, threadlocal, unnamed_addr, | |||
3566 | // preemption specifier] (name in VST) | |||
3567 | // v2: [strtab_offset, strtab_size, v1] | |||
3568 | StringRef Name; | |||
3569 | std::tie(Name, Record) = readNameFromStrtab(Record); | |||
3570 | ||||
3571 | bool NewRecord = BitCode != bitc::MODULE_CODE_ALIAS_OLD; | |||
3572 | if (Record.size() < (3 + (unsigned)NewRecord)) | |||
3573 | return error("Invalid record"); | |||
3574 | unsigned OpNum = 0; | |||
3575 | unsigned TypeID = Record[OpNum++]; | |||
3576 | Type *Ty = getTypeByID(TypeID); | |||
3577 | if (!Ty) | |||
3578 | return error("Invalid record"); | |||
3579 | ||||
3580 | unsigned AddrSpace; | |||
3581 | if (!NewRecord) { | |||
3582 | auto *PTy = dyn_cast<PointerType>(Ty); | |||
3583 | if (!PTy) | |||
3584 | return error("Invalid type for value"); | |||
3585 | AddrSpace = PTy->getAddressSpace(); | |||
3586 | Ty = getPtrElementTypeByID(TypeID); | |||
3587 | if (!Ty) | |||
3588 | return error("Missing element type for old-style indirect symbol"); | |||
3589 | } else { | |||
3590 | AddrSpace = Record[OpNum++]; | |||
3591 | } | |||
3592 | ||||
3593 | auto Val = Record[OpNum++]; | |||
3594 | auto Linkage = Record[OpNum++]; | |||
3595 | GlobalValue *NewGA; | |||
3596 | if (BitCode == bitc::MODULE_CODE_ALIAS || | |||
3597 | BitCode == bitc::MODULE_CODE_ALIAS_OLD) | |||
3598 | NewGA = GlobalAlias::create(Ty, AddrSpace, getDecodedLinkage(Linkage), Name, | |||
3599 | TheModule); | |||
3600 | else | |||
3601 | NewGA = GlobalIFunc::create(Ty, AddrSpace, getDecodedLinkage(Linkage), Name, | |||
3602 | nullptr, TheModule); | |||
3603 | ||||
3604 | // Local linkage must have default visibility. | |||
3605 | // auto-upgrade `hidden` and `protected` for old bitcode. | |||
3606 | if (OpNum != Record.size()) { | |||
3607 | auto VisInd = OpNum++; | |||
3608 | if (!NewGA->hasLocalLinkage()) | |||
3609 | NewGA->setVisibility(getDecodedVisibility(Record[VisInd])); | |||
3610 | } | |||
3611 | if (BitCode == bitc::MODULE_CODE_ALIAS || | |||
3612 | BitCode == bitc::MODULE_CODE_ALIAS_OLD) { | |||
3613 | if (OpNum != Record.size()) | |||
3614 | NewGA->setDLLStorageClass(getDecodedDLLStorageClass(Record[OpNum++])); | |||
3615 | else | |||
3616 | upgradeDLLImportExportLinkage(NewGA, Linkage); | |||
3617 | if (OpNum != Record.size()) | |||
3618 | NewGA->setThreadLocalMode(getDecodedThreadLocalMode(Record[OpNum++])); | |||
3619 | if (OpNum != Record.size()) | |||
3620 | NewGA->setUnnamedAddr(getDecodedUnnamedAddrType(Record[OpNum++])); | |||
3621 | } | |||
3622 | if (OpNum != Record.size()) | |||
3623 | NewGA->setDSOLocal(getDecodedDSOLocal(Record[OpNum++])); | |||
3624 | inferDSOLocal(NewGA); | |||
3625 | ||||
3626 | // Check whether we have enough values to read a partition name. | |||
3627 | if (OpNum + 1 < Record.size()) { | |||
3628 | NewGA->setPartition( | |||
3629 | StringRef(Strtab.data() + Record[OpNum], Record[OpNum + 1])); | |||
3630 | OpNum += 2; | |||
3631 | } | |||
3632 | ||||
3633 | ValueList.push_back(NewGA); | |||
3634 | IndirectSymbolInits.push_back(std::make_pair(NewGA, Val)); | |||
3635 | return Error::success(); | |||
3636 | } | |||
3637 | ||||
3638 | Error BitcodeReader::parseModule(uint64_t ResumeBit, | |||
3639 | bool ShouldLazyLoadMetadata, | |||
3640 | DataLayoutCallbackTy DataLayoutCallback) { | |||
3641 | if (ResumeBit) { | |||
3642 | if (Error JumpFailed = Stream.JumpToBit(ResumeBit)) | |||
3643 | return JumpFailed; | |||
3644 | } else if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | |||
3645 | return Err; | |||
3646 | ||||
3647 | SmallVector<uint64_t, 64> Record; | |||
3648 | ||||
3649 | // Parts of bitcode parsing depend on the datalayout. Make sure we | |||
3650 | // finalize the datalayout before we run any of that code. | |||
3651 | bool ResolvedDataLayout = false; | |||
3652 | auto ResolveDataLayout = [&] { | |||
3653 | if (ResolvedDataLayout) | |||
3654 | return; | |||
3655 | ||||
3656 | // datalayout and triple can't be parsed after this point. | |||
3657 | ResolvedDataLayout = true; | |||
3658 | ||||
3659 | // Upgrade data layout string. | |||
3660 | std::string DL = llvm::UpgradeDataLayoutString( | |||
3661 | TheModule->getDataLayoutStr(), TheModule->getTargetTriple()); | |||
3662 | TheModule->setDataLayout(DL); | |||
3663 | ||||
3664 | if (auto LayoutOverride = | |||
3665 | DataLayoutCallback(TheModule->getTargetTriple())) | |||
3666 | TheModule->setDataLayout(*LayoutOverride); | |||
3667 | }; | |||
3668 | ||||
3669 | // Read all the records for this module. | |||
3670 | while (true) { | |||
3671 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | |||
3672 | if (!MaybeEntry) | |||
3673 | return MaybeEntry.takeError(); | |||
3674 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | |||
3675 | ||||
3676 | switch (Entry.Kind) { | |||
3677 | case BitstreamEntry::Error: | |||
3678 | return error("Malformed block"); | |||
3679 | case BitstreamEntry::EndBlock: | |||
3680 | ResolveDataLayout(); | |||
3681 | return globalCleanup(); | |||
3682 | ||||
3683 | case BitstreamEntry::SubBlock: | |||
3684 | switch (Entry.ID) { | |||
3685 | default: // Skip unknown content. | |||
3686 | if (Error Err = Stream.SkipBlock()) | |||
3687 | return Err; | |||
3688 | break; | |||
3689 | case bitc::BLOCKINFO_BLOCK_ID: | |||
3690 | if (Error Err = readBlockInfo()) | |||
3691 | return Err; | |||
3692 | break; | |||
3693 | case bitc::PARAMATTR_BLOCK_ID: | |||
3694 | if (Error Err = parseAttributeBlock()) | |||
3695 | return Err; | |||
3696 | break; | |||
3697 | case bitc::PARAMATTR_GROUP_BLOCK_ID: | |||
3698 | if (Error Err = parseAttributeGroupBlock()) | |||
3699 | return Err; | |||
3700 | break; | |||
3701 | case bitc::TYPE_BLOCK_ID_NEW: | |||
3702 | if (Error Err = parseTypeTable()) | |||
3703 | return Err; | |||
3704 | break; | |||
3705 | case bitc::VALUE_SYMTAB_BLOCK_ID: | |||
3706 | if (!SeenValueSymbolTable) { | |||
3707 | // Either this is an old form VST without function index and an | |||
3708 | // associated VST forward declaration record (which would have caused | |||
3709 | // the VST to be jumped to and parsed before it was encountered | |||
3710 | // normally in the stream), or there were no function blocks to | |||
3711 | // trigger an earlier parsing of the VST. | |||
3712 | assert(VSTOffset == 0 || FunctionsWithBodies.empty())(static_cast <bool> (VSTOffset == 0 || FunctionsWithBodies .empty()) ? void (0) : __assert_fail ("VSTOffset == 0 || FunctionsWithBodies.empty()" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3712, __extension__ __PRETTY_FUNCTION__)); | |||
3713 | if (Error Err = parseValueSymbolTable()) | |||
3714 | return Err; | |||
3715 | SeenValueSymbolTable = true; | |||
3716 | } else { | |||
3717 | // We must have had a VST forward declaration record, which caused | |||
3718 | // the parser to jump to and parse the VST earlier. | |||
3719 | assert(VSTOffset > 0)(static_cast <bool> (VSTOffset > 0) ? void (0) : __assert_fail ("VSTOffset > 0", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3719, __extension__ __PRETTY_FUNCTION__)); | |||
3720 | if (Error Err = Stream.SkipBlock()) | |||
3721 | return Err; | |||
3722 | } | |||
3723 | break; | |||
3724 | case bitc::CONSTANTS_BLOCK_ID: | |||
3725 | if (Error Err = parseConstants()) | |||
3726 | return Err; | |||
3727 | if (Error Err = resolveGlobalAndIndirectSymbolInits()) | |||
3728 | return Err; | |||
3729 | break; | |||
3730 | case bitc::METADATA_BLOCK_ID: | |||
3731 | if (ShouldLazyLoadMetadata) { | |||
3732 | if (Error Err = rememberAndSkipMetadata()) | |||
3733 | return Err; | |||
3734 | break; | |||
3735 | } | |||
3736 | assert(DeferredMetadataInfo.empty() && "Unexpected deferred metadata")(static_cast <bool> (DeferredMetadataInfo.empty() && "Unexpected deferred metadata") ? void (0) : __assert_fail ( "DeferredMetadataInfo.empty() && \"Unexpected deferred metadata\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3736, __extension__ __PRETTY_FUNCTION__)); | |||
3737 | if (Error Err = MDLoader->parseModuleMetadata()) | |||
3738 | return Err; | |||
3739 | break; | |||
3740 | case bitc::METADATA_KIND_BLOCK_ID: | |||
3741 | if (Error Err = MDLoader->parseMetadataKinds()) | |||
3742 | return Err; | |||
3743 | break; | |||
3744 | case bitc::FUNCTION_BLOCK_ID: | |||
3745 | ResolveDataLayout(); | |||
3746 | ||||
3747 | // If this is the first function body we've seen, reverse the | |||
3748 | // FunctionsWithBodies list. | |||
3749 | if (!SeenFirstFunctionBody) { | |||
3750 | std::reverse(FunctionsWithBodies.begin(), FunctionsWithBodies.end()); | |||
3751 | if (Error Err = globalCleanup()) | |||
3752 | return Err; | |||
3753 | SeenFirstFunctionBody = true; | |||
3754 | } | |||
3755 | ||||
3756 | if (VSTOffset > 0) { | |||
3757 | // If we have a VST forward declaration record, make sure we | |||
3758 | // parse the VST now if we haven't already. It is needed to | |||
3759 | // set up the DeferredFunctionInfo vector for lazy reading. | |||
3760 | if (!SeenValueSymbolTable) { | |||
3761 | if (Error Err = BitcodeReader::parseValueSymbolTable(VSTOffset)) | |||
3762 | return Err; | |||
3763 | SeenValueSymbolTable = true; | |||
3764 | // Fall through so that we record the NextUnreadBit below. | |||
3765 | // This is necessary in case we have an anonymous function that | |||
3766 | // is later materialized. Since it will not have a VST entry we | |||
3767 | // need to fall back to the lazy parse to find its offset. | |||
3768 | } else { | |||
3769 | // If we have a VST forward declaration record, but have already | |||
3770 | // parsed the VST (just above, when the first function body was | |||
3771 | // encountered here), then we are resuming the parse after | |||
3772 | // materializing functions. The ResumeBit points to the | |||
3773 | // start of the last function block recorded in the | |||
3774 | // DeferredFunctionInfo map. Skip it. | |||
3775 | if (Error Err = Stream.SkipBlock()) | |||
3776 | return Err; | |||
3777 | continue; | |||
3778 | } | |||
3779 | } | |||
3780 | ||||
3781 | // Support older bitcode files that did not have the function | |||
3782 | // index in the VST, nor a VST forward declaration record, as | |||
3783 | // well as anonymous functions that do not have VST entries. | |||
3784 | // Build the DeferredFunctionInfo vector on the fly. | |||
3785 | if (Error Err = rememberAndSkipFunctionBody()) | |||
3786 | return Err; | |||
3787 | ||||
3788 | // Suspend parsing when we reach the function bodies. Subsequent | |||
3789 | // materialization calls will resume it when necessary. If the bitcode | |||
3790 | // file is old, the symbol table will be at the end instead and will not | |||
3791 | // have been seen yet. In this case, just finish the parse now. | |||
3792 | if (SeenValueSymbolTable) { | |||
3793 | NextUnreadBit = Stream.GetCurrentBitNo(); | |||
3794 | // After the VST has been parsed, we need to make sure intrinsic name | |||
3795 | // are auto-upgraded. | |||
3796 | return globalCleanup(); | |||
3797 | } | |||
3798 | break; | |||
3799 | case bitc::USELIST_BLOCK_ID: | |||
3800 | if (Error Err = parseUseLists()) | |||
3801 | return Err; | |||
3802 | break; | |||
3803 | case bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID: | |||
3804 | if (Error Err = parseOperandBundleTags()) | |||
3805 | return Err; | |||
3806 | break; | |||
3807 | case bitc::SYNC_SCOPE_NAMES_BLOCK_ID: | |||
3808 | if (Error Err = parseSyncScopeNames()) | |||
3809 | return Err; | |||
3810 | break; | |||
3811 | } | |||
3812 | continue; | |||
3813 | ||||
3814 | case BitstreamEntry::Record: | |||
3815 | // The interesting case. | |||
3816 | break; | |||
3817 | } | |||
3818 | ||||
3819 | // Read a record. | |||
3820 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | |||
3821 | if (!MaybeBitCode) | |||
3822 | return MaybeBitCode.takeError(); | |||
3823 | switch (unsigned BitCode = MaybeBitCode.get()) { | |||
3824 | default: break; // Default behavior, ignore unknown content. | |||
3825 | case bitc::MODULE_CODE_VERSION: { | |||
3826 | Expected<unsigned> VersionOrErr = parseVersionRecord(Record); | |||
3827 | if (!VersionOrErr) | |||
3828 | return VersionOrErr.takeError(); | |||
3829 | UseRelativeIDs = *VersionOrErr >= 1; | |||
3830 | break; | |||
3831 | } | |||
3832 | case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N] | |||
3833 | if (ResolvedDataLayout) | |||
3834 | return error("target triple too late in module"); | |||
3835 | std::string S; | |||
3836 | if (convertToString(Record, 0, S)) | |||
3837 | return error("Invalid record"); | |||
3838 | TheModule->setTargetTriple(S); | |||
3839 | break; | |||
3840 | } | |||
3841 | case bitc::MODULE_CODE_DATALAYOUT: { // DATALAYOUT: [strchr x N] | |||
3842 | if (ResolvedDataLayout) | |||
3843 | return error("datalayout too late in module"); | |||
3844 | std::string S; | |||
3845 | if (convertToString(Record, 0, S)) | |||
3846 | return error("Invalid record"); | |||
3847 | Expected<DataLayout> MaybeDL = DataLayout::parse(S); | |||
3848 | if (!MaybeDL) | |||
3849 | return MaybeDL.takeError(); | |||
3850 | TheModule->setDataLayout(MaybeDL.get()); | |||
3851 | break; | |||
3852 | } | |||
3853 | case bitc::MODULE_CODE_ASM: { // ASM: [strchr x N] | |||
3854 | std::string S; | |||
3855 | if (convertToString(Record, 0, S)) | |||
3856 | return error("Invalid record"); | |||
3857 | TheModule->setModuleInlineAsm(S); | |||
3858 | break; | |||
3859 | } | |||
3860 | case bitc::MODULE_CODE_DEPLIB: { // DEPLIB: [strchr x N] | |||
3861 | // Deprecated, but still needed to read old bitcode files. | |||
3862 | std::string S; | |||
3863 | if (convertToString(Record, 0, S)) | |||
3864 | return error("Invalid record"); | |||
3865 | // Ignore value. | |||
3866 | break; | |||
3867 | } | |||
3868 | case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N] | |||
3869 | std::string S; | |||
3870 | if (convertToString(Record, 0, S)) | |||
3871 | return error("Invalid record"); | |||
3872 | SectionTable.push_back(S); | |||
3873 | break; | |||
3874 | } | |||
3875 | case bitc::MODULE_CODE_GCNAME: { // SECTIONNAME: [strchr x N] | |||
3876 | std::string S; | |||
3877 | if (convertToString(Record, 0, S)) | |||
3878 | return error("Invalid record"); | |||
3879 | GCTable.push_back(S); | |||
3880 | break; | |||
3881 | } | |||
3882 | case bitc::MODULE_CODE_COMDAT: | |||
3883 | if (Error Err = parseComdatRecord(Record)) | |||
3884 | return Err; | |||
3885 | break; | |||
3886 | // FIXME: BitcodeReader should handle {GLOBALVAR, FUNCTION, ALIAS, IFUNC} | |||
3887 | // written by ThinLinkBitcodeWriter. See | |||
3888 | // `ThinLinkBitcodeWriter::writeSimplifiedModuleInfo` for the format of each | |||
3889 | // record | |||
3890 | // (https://github.com/llvm/llvm-project/blob/b6a93967d9c11e79802b5e75cec1584d6c8aa472/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp#L4714) | |||
3891 | case bitc::MODULE_CODE_GLOBALVAR: | |||
3892 | if (Error Err = parseGlobalVarRecord(Record)) | |||
3893 | return Err; | |||
3894 | break; | |||
3895 | case bitc::MODULE_CODE_FUNCTION: | |||
3896 | ResolveDataLayout(); | |||
3897 | if (Error Err = parseFunctionRecord(Record)) | |||
3898 | return Err; | |||
3899 | break; | |||
3900 | case bitc::MODULE_CODE_IFUNC: | |||
3901 | case bitc::MODULE_CODE_ALIAS: | |||
3902 | case bitc::MODULE_CODE_ALIAS_OLD: | |||
3903 | if (Error Err = parseGlobalIndirectSymbolRecord(BitCode, Record)) | |||
3904 | return Err; | |||
3905 | break; | |||
3906 | /// MODULE_CODE_VSTOFFSET: [offset] | |||
3907 | case bitc::MODULE_CODE_VSTOFFSET: | |||
3908 | if (Record.empty()) | |||
3909 | return error("Invalid record"); | |||
3910 | // Note that we subtract 1 here because the offset is relative to one word | |||
3911 | // before the start of the identification or module block, which was | |||
3912 | // historically always the start of the regular bitcode header. | |||
3913 | VSTOffset = Record[0] - 1; | |||
3914 | break; | |||
3915 | /// MODULE_CODE_SOURCE_FILENAME: [namechar x N] | |||
3916 | case bitc::MODULE_CODE_SOURCE_FILENAME: | |||
3917 | SmallString<128> ValueName; | |||
3918 | if (convertToString(Record, 0, ValueName)) | |||
3919 | return error("Invalid record"); | |||
3920 | TheModule->setSourceFileName(ValueName); | |||
3921 | break; | |||
3922 | } | |||
3923 | Record.clear(); | |||
3924 | } | |||
3925 | } | |||
3926 | ||||
3927 | Error BitcodeReader::parseBitcodeInto(Module *M, bool ShouldLazyLoadMetadata, | |||
3928 | bool IsImporting, | |||
3929 | DataLayoutCallbackTy DataLayoutCallback) { | |||
3930 | TheModule = M; | |||
3931 | MDLoader = MetadataLoader(Stream, *M, ValueList, IsImporting, | |||
3932 | [&](unsigned ID) { return getTypeByID(ID); }); | |||
3933 | return parseModule(0, ShouldLazyLoadMetadata, DataLayoutCallback); | |||
3934 | } | |||
3935 | ||||
3936 | Error BitcodeReader::typeCheckLoadStoreInst(Type *ValType, Type *PtrType) { | |||
3937 | if (!isa<PointerType>(PtrType)) | |||
3938 | return error("Load/Store operand is not a pointer type"); | |||
3939 | ||||
3940 | if (!cast<PointerType>(PtrType)->isOpaqueOrPointeeTypeMatches(ValType)) | |||
3941 | return error("Explicit load/store type does not match pointee " | |||
3942 | "type of pointer operand"); | |||
3943 | if (!PointerType::isLoadableOrStorableType(ValType)) | |||
3944 | return error("Cannot load/store from pointer"); | |||
3945 | return Error::success(); | |||
3946 | } | |||
3947 | ||||
3948 | void BitcodeReader::propagateAttributeTypes(CallBase *CB, | |||
3949 | ArrayRef<Type *> ArgsTys) { | |||
3950 | for (unsigned i = 0; i != CB->arg_size(); ++i) { | |||
3951 | for (Attribute::AttrKind Kind : {Attribute::ByVal, Attribute::StructRet, | |||
3952 | Attribute::InAlloca}) { | |||
3953 | if (!CB->paramHasAttr(i, Kind) || | |||
3954 | CB->getParamAttr(i, Kind).getValueAsType()) | |||
3955 | continue; | |||
3956 | ||||
3957 | CB->removeParamAttr(i, Kind); | |||
3958 | ||||
3959 | Type *PtrEltTy = ArgsTys[i]->getPointerElementType(); | |||
3960 | Attribute NewAttr; | |||
3961 | switch (Kind) { | |||
3962 | case Attribute::ByVal: | |||
3963 | NewAttr = Attribute::getWithByValType(Context, PtrEltTy); | |||
3964 | break; | |||
3965 | case Attribute::StructRet: | |||
3966 | NewAttr = Attribute::getWithStructRetType(Context, PtrEltTy); | |||
3967 | break; | |||
3968 | case Attribute::InAlloca: | |||
3969 | NewAttr = Attribute::getWithInAllocaType(Context, PtrEltTy); | |||
3970 | break; | |||
3971 | default: | |||
3972 | llvm_unreachable("not an upgraded type attribute")::llvm::llvm_unreachable_internal("not an upgraded type attribute" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 3972); | |||
3973 | } | |||
3974 | ||||
3975 | CB->addParamAttr(i, NewAttr); | |||
3976 | } | |||
3977 | } | |||
3978 | ||||
3979 | if (CB->isInlineAsm()) { | |||
3980 | const InlineAsm *IA = cast<InlineAsm>(CB->getCalledOperand()); | |||
3981 | unsigned ArgNo = 0; | |||
3982 | for (const InlineAsm::ConstraintInfo &CI : IA->ParseConstraints()) { | |||
3983 | if (!CI.hasArg()) | |||
3984 | continue; | |||
3985 | ||||
3986 | if (CI.isIndirect && !CB->getAttributes().getParamElementType(ArgNo)) { | |||
3987 | Type *ElemTy = ArgsTys[ArgNo]->getPointerElementType(); | |||
3988 | CB->addParamAttr( | |||
3989 | ArgNo, Attribute::get(Context, Attribute::ElementType, ElemTy)); | |||
3990 | } | |||
3991 | ||||
3992 | ArgNo++; | |||
3993 | } | |||
3994 | } | |||
3995 | ||||
3996 | switch (CB->getIntrinsicID()) { | |||
3997 | case Intrinsic::preserve_array_access_index: | |||
3998 | case Intrinsic::preserve_struct_access_index: | |||
3999 | if (!CB->getAttributes().getParamElementType(0)) { | |||
4000 | Type *ElTy = ArgsTys[0]->getPointerElementType(); | |||
4001 | Attribute NewAttr = Attribute::get(Context, Attribute::ElementType, ElTy); | |||
4002 | CB->addParamAttr(0, NewAttr); | |||
4003 | } | |||
4004 | break; | |||
4005 | default: | |||
4006 | break; | |||
4007 | } | |||
4008 | } | |||
4009 | ||||
4010 | /// Lazily parse the specified function body block. | |||
4011 | Error BitcodeReader::parseFunctionBody(Function *F) { | |||
4012 | if (Error Err = Stream.EnterSubBlock(bitc::FUNCTION_BLOCK_ID)) | |||
4013 | return Err; | |||
4014 | ||||
4015 | // Unexpected unresolved metadata when parsing function. | |||
4016 | if (MDLoader->hasFwdRefs()) | |||
4017 | return error("Invalid function metadata: incoming forward references"); | |||
4018 | ||||
4019 | InstructionList.clear(); | |||
4020 | unsigned ModuleValueListSize = ValueList.size(); | |||
4021 | unsigned ModuleMDLoaderSize = MDLoader->size(); | |||
4022 | ||||
4023 | // Add all the function arguments to the value table. | |||
4024 | #ifndef NDEBUG | |||
4025 | unsigned ArgNo = 0; | |||
4026 | FunctionType *FTy = FunctionTypes[F]; | |||
4027 | #endif | |||
4028 | for (Argument &I : F->args()) { | |||
4029 | assert(I.getType() == FTy->getParamType(ArgNo++) &&(static_cast <bool> (I.getType() == FTy->getParamType (ArgNo++) && "Incorrect fully specified type for Function Argument" ) ? void (0) : __assert_fail ("I.getType() == FTy->getParamType(ArgNo++) && \"Incorrect fully specified type for Function Argument\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4030, __extension__ __PRETTY_FUNCTION__)) | |||
4030 | "Incorrect fully specified type for Function Argument")(static_cast <bool> (I.getType() == FTy->getParamType (ArgNo++) && "Incorrect fully specified type for Function Argument" ) ? void (0) : __assert_fail ("I.getType() == FTy->getParamType(ArgNo++) && \"Incorrect fully specified type for Function Argument\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4030, __extension__ __PRETTY_FUNCTION__)); | |||
4031 | ValueList.push_back(&I); | |||
4032 | } | |||
4033 | unsigned NextValueNo = ValueList.size(); | |||
4034 | BasicBlock *CurBB = nullptr; | |||
4035 | unsigned CurBBNo = 0; | |||
4036 | ||||
4037 | DebugLoc LastLoc; | |||
4038 | auto getLastInstruction = [&]() -> Instruction * { | |||
4039 | if (CurBB && !CurBB->empty()) | |||
4040 | return &CurBB->back(); | |||
4041 | else if (CurBBNo && FunctionBBs[CurBBNo - 1] && | |||
4042 | !FunctionBBs[CurBBNo - 1]->empty()) | |||
4043 | return &FunctionBBs[CurBBNo - 1]->back(); | |||
4044 | return nullptr; | |||
4045 | }; | |||
4046 | ||||
4047 | std::vector<OperandBundleDef> OperandBundles; | |||
4048 | ||||
4049 | // Read all the records. | |||
4050 | SmallVector<uint64_t, 64> Record; | |||
4051 | ||||
4052 | while (true) { | |||
4053 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | |||
4054 | if (!MaybeEntry) | |||
4055 | return MaybeEntry.takeError(); | |||
4056 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | |||
4057 | ||||
4058 | switch (Entry.Kind) { | |||
4059 | case BitstreamEntry::Error: | |||
4060 | return error("Malformed block"); | |||
4061 | case BitstreamEntry::EndBlock: | |||
4062 | goto OutOfRecordLoop; | |||
4063 | ||||
4064 | case BitstreamEntry::SubBlock: | |||
4065 | switch (Entry.ID) { | |||
4066 | default: // Skip unknown content. | |||
4067 | if (Error Err = Stream.SkipBlock()) | |||
4068 | return Err; | |||
4069 | break; | |||
4070 | case bitc::CONSTANTS_BLOCK_ID: | |||
4071 | if (Error Err = parseConstants()) | |||
4072 | return Err; | |||
4073 | NextValueNo = ValueList.size(); | |||
4074 | break; | |||
4075 | case bitc::VALUE_SYMTAB_BLOCK_ID: | |||
4076 | if (Error Err = parseValueSymbolTable()) | |||
4077 | return Err; | |||
4078 | break; | |||
4079 | case bitc::METADATA_ATTACHMENT_ID: | |||
4080 | if (Error Err = MDLoader->parseMetadataAttachment(*F, InstructionList)) | |||
4081 | return Err; | |||
4082 | break; | |||
4083 | case bitc::METADATA_BLOCK_ID: | |||
4084 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4085, __extension__ __PRETTY_FUNCTION__)) | |||
4085 | "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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4085, __extension__ __PRETTY_FUNCTION__)); | |||
4086 | if (Error Err = MDLoader->parseFunctionMetadata()) | |||
4087 | return Err; | |||
4088 | break; | |||
4089 | case bitc::USELIST_BLOCK_ID: | |||
4090 | if (Error Err = parseUseLists()) | |||
4091 | return Err; | |||
4092 | break; | |||
4093 | } | |||
4094 | continue; | |||
4095 | ||||
4096 | case BitstreamEntry::Record: | |||
4097 | // The interesting case. | |||
4098 | break; | |||
4099 | } | |||
4100 | ||||
4101 | // Read a record. | |||
4102 | Record.clear(); | |||
4103 | Instruction *I = nullptr; | |||
4104 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | |||
4105 | if (!MaybeBitCode) | |||
4106 | return MaybeBitCode.takeError(); | |||
4107 | switch (unsigned BitCode = MaybeBitCode.get()) { | |||
4108 | default: // Default behavior: reject | |||
4109 | return error("Invalid value"); | |||
4110 | case bitc::FUNC_CODE_DECLAREBLOCKS: { // DECLAREBLOCKS: [nblocks] | |||
4111 | if (Record.empty() || Record[0] == 0) | |||
4112 | return error("Invalid record"); | |||
4113 | // Create all the basic blocks for the function. | |||
4114 | FunctionBBs.resize(Record[0]); | |||
4115 | ||||
4116 | // See if anything took the address of blocks in this function. | |||
4117 | auto BBFRI = BasicBlockFwdRefs.find(F); | |||
4118 | if (BBFRI == BasicBlockFwdRefs.end()) { | |||
4119 | for (BasicBlock *&BB : FunctionBBs) | |||
4120 | BB = BasicBlock::Create(Context, "", F); | |||
4121 | } else { | |||
4122 | auto &BBRefs = BBFRI->second; | |||
4123 | // Check for invalid basic block references. | |||
4124 | if (BBRefs.size() > FunctionBBs.size()) | |||
4125 | return error("Invalid ID"); | |||
4126 | assert(!BBRefs.empty() && "Unexpected empty array")(static_cast <bool> (!BBRefs.empty() && "Unexpected empty array" ) ? void (0) : __assert_fail ("!BBRefs.empty() && \"Unexpected empty array\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4126, __extension__ __PRETTY_FUNCTION__)); | |||
4127 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4127, __extension__ __PRETTY_FUNCTION__)); | |||
4128 | for (unsigned I = 0, E = FunctionBBs.size(), RE = BBRefs.size(); I != E; | |||
4129 | ++I) | |||
4130 | if (I < RE && BBRefs[I]) { | |||
4131 | BBRefs[I]->insertInto(F); | |||
4132 | FunctionBBs[I] = BBRefs[I]; | |||
4133 | } else { | |||
4134 | FunctionBBs[I] = BasicBlock::Create(Context, "", F); | |||
4135 | } | |||
4136 | ||||
4137 | // Erase from the table. | |||
4138 | BasicBlockFwdRefs.erase(BBFRI); | |||
4139 | } | |||
4140 | ||||
4141 | CurBB = FunctionBBs[0]; | |||
4142 | continue; | |||
4143 | } | |||
4144 | ||||
4145 | case bitc::FUNC_CODE_DEBUG_LOC_AGAIN: // DEBUG_LOC_AGAIN | |||
4146 | // This record indicates that the last instruction is at the same | |||
4147 | // location as the previous instruction with a location. | |||
4148 | I = getLastInstruction(); | |||
4149 | ||||
4150 | if (!I) | |||
4151 | return error("Invalid record"); | |||
4152 | I->setDebugLoc(LastLoc); | |||
4153 | I = nullptr; | |||
4154 | continue; | |||
4155 | ||||
4156 | case bitc::FUNC_CODE_DEBUG_LOC: { // DEBUG_LOC: [line, col, scope, ia] | |||
4157 | I = getLastInstruction(); | |||
4158 | if (!I || Record.size() < 4) | |||
4159 | return error("Invalid record"); | |||
4160 | ||||
4161 | unsigned Line = Record[0], Col = Record[1]; | |||
4162 | unsigned ScopeID = Record[2], IAID = Record[3]; | |||
4163 | bool isImplicitCode = Record.size() == 5 && Record[4]; | |||
4164 | ||||
4165 | MDNode *Scope = nullptr, *IA = nullptr; | |||
4166 | if (ScopeID) { | |||
4167 | Scope = dyn_cast_or_null<MDNode>( | |||
4168 | MDLoader->getMetadataFwdRefOrLoad(ScopeID - 1)); | |||
4169 | if (!Scope) | |||
4170 | return error("Invalid record"); | |||
4171 | } | |||
4172 | if (IAID) { | |||
4173 | IA = dyn_cast_or_null<MDNode>( | |||
4174 | MDLoader->getMetadataFwdRefOrLoad(IAID - 1)); | |||
4175 | if (!IA) | |||
4176 | return error("Invalid record"); | |||
4177 | } | |||
4178 | LastLoc = DILocation::get(Scope->getContext(), Line, Col, Scope, IA, | |||
4179 | isImplicitCode); | |||
4180 | I->setDebugLoc(LastLoc); | |||
4181 | I = nullptr; | |||
4182 | continue; | |||
4183 | } | |||
4184 | case bitc::FUNC_CODE_INST_UNOP: { // UNOP: [opval, ty, opcode] | |||
4185 | unsigned OpNum = 0; | |||
4186 | Value *LHS; | |||
4187 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || | |||
4188 | OpNum+1 > Record.size()) | |||
4189 | return error("Invalid record"); | |||
4190 | ||||
4191 | int Opc = getDecodedUnaryOpcode(Record[OpNum++], LHS->getType()); | |||
4192 | if (Opc == -1) | |||
4193 | return error("Invalid record"); | |||
4194 | I = UnaryOperator::Create((Instruction::UnaryOps)Opc, LHS); | |||
4195 | InstructionList.push_back(I); | |||
4196 | if (OpNum < Record.size()) { | |||
4197 | if (isa<FPMathOperator>(I)) { | |||
4198 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); | |||
4199 | if (FMF.any()) | |||
4200 | I->setFastMathFlags(FMF); | |||
4201 | } | |||
4202 | } | |||
4203 | break; | |||
4204 | } | |||
4205 | case bitc::FUNC_CODE_INST_BINOP: { // BINOP: [opval, ty, opval, opcode] | |||
4206 | unsigned OpNum = 0; | |||
4207 | Value *LHS, *RHS; | |||
4208 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || | |||
4209 | popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS) || | |||
4210 | OpNum+1 > Record.size()) | |||
4211 | return error("Invalid record"); | |||
4212 | ||||
4213 | int Opc = getDecodedBinaryOpcode(Record[OpNum++], LHS->getType()); | |||
4214 | if (Opc == -1) | |||
4215 | return error("Invalid record"); | |||
4216 | I = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS); | |||
4217 | InstructionList.push_back(I); | |||
4218 | if (OpNum < Record.size()) { | |||
4219 | if (Opc == Instruction::Add || | |||
4220 | Opc == Instruction::Sub || | |||
4221 | Opc == Instruction::Mul || | |||
4222 | Opc == Instruction::Shl) { | |||
4223 | if (Record[OpNum] & (1 << bitc::OBO_NO_SIGNED_WRAP)) | |||
4224 | cast<BinaryOperator>(I)->setHasNoSignedWrap(true); | |||
4225 | if (Record[OpNum] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) | |||
4226 | cast<BinaryOperator>(I)->setHasNoUnsignedWrap(true); | |||
4227 | } else if (Opc == Instruction::SDiv || | |||
4228 | Opc == Instruction::UDiv || | |||
4229 | Opc == Instruction::LShr || | |||
4230 | Opc == Instruction::AShr) { | |||
4231 | if (Record[OpNum] & (1 << bitc::PEO_EXACT)) | |||
4232 | cast<BinaryOperator>(I)->setIsExact(true); | |||
4233 | } else if (isa<FPMathOperator>(I)) { | |||
4234 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); | |||
4235 | if (FMF.any()) | |||
4236 | I->setFastMathFlags(FMF); | |||
4237 | } | |||
4238 | ||||
4239 | } | |||
4240 | break; | |||
4241 | } | |||
4242 | case bitc::FUNC_CODE_INST_CAST: { // CAST: [opval, opty, destty, castopc] | |||
4243 | unsigned OpNum = 0; | |||
4244 | Value *Op; | |||
4245 | if (getValueTypePair(Record, OpNum, NextValueNo, Op) || | |||
4246 | OpNum+2 != Record.size()) | |||
4247 | return error("Invalid record"); | |||
4248 | ||||
4249 | Type *ResTy = getTypeByID(Record[OpNum]); | |||
4250 | int Opc = getDecodedCastOpcode(Record[OpNum + 1]); | |||
4251 | if (Opc == -1 || !ResTy) | |||
4252 | return error("Invalid record"); | |||
4253 | Instruction *Temp = nullptr; | |||
4254 | if ((I = UpgradeBitCastInst(Opc, Op, ResTy, Temp))) { | |||
4255 | if (Temp) { | |||
4256 | InstructionList.push_back(Temp); | |||
4257 | assert(CurBB && "No current BB?")(static_cast <bool> (CurBB && "No current BB?") ? void (0) : __assert_fail ("CurBB && \"No current BB?\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4257, __extension__ __PRETTY_FUNCTION__)); | |||
4258 | CurBB->getInstList().push_back(Temp); | |||
4259 | } | |||
4260 | } else { | |||
4261 | auto CastOp = (Instruction::CastOps)Opc; | |||
4262 | if (!CastInst::castIsValid(CastOp, Op, ResTy)) | |||
4263 | return error("Invalid cast"); | |||
4264 | I = CastInst::Create(CastOp, Op, ResTy); | |||
4265 | } | |||
4266 | InstructionList.push_back(I); | |||
4267 | break; | |||
4268 | } | |||
4269 | case bitc::FUNC_CODE_INST_INBOUNDS_GEP_OLD: | |||
4270 | case bitc::FUNC_CODE_INST_GEP_OLD: | |||
4271 | case bitc::FUNC_CODE_INST_GEP: { // GEP: type, [n x operands] | |||
4272 | unsigned OpNum = 0; | |||
4273 | ||||
4274 | Type *Ty; | |||
4275 | bool InBounds; | |||
4276 | ||||
4277 | if (BitCode == bitc::FUNC_CODE_INST_GEP) { | |||
4278 | InBounds = Record[OpNum++]; | |||
4279 | Ty = getTypeByID(Record[OpNum++]); | |||
4280 | } else { | |||
4281 | InBounds = BitCode == bitc::FUNC_CODE_INST_INBOUNDS_GEP_OLD; | |||
4282 | Ty = nullptr; | |||
4283 | } | |||
4284 | ||||
4285 | Value *BasePtr; | |||
4286 | if (getValueTypePair(Record, OpNum, NextValueNo, BasePtr)) | |||
4287 | return error("Invalid record"); | |||
4288 | ||||
4289 | if (!Ty) { | |||
4290 | Ty = BasePtr->getType()->getScalarType()->getPointerElementType(); | |||
4291 | } else if (!cast<PointerType>(BasePtr->getType()->getScalarType()) | |||
4292 | ->isOpaqueOrPointeeTypeMatches(Ty)) { | |||
4293 | return error( | |||
4294 | "Explicit gep type does not match pointee type of pointer operand"); | |||
4295 | } | |||
4296 | ||||
4297 | SmallVector<Value*, 16> GEPIdx; | |||
4298 | while (OpNum != Record.size()) { | |||
4299 | Value *Op; | |||
4300 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | |||
4301 | return error("Invalid record"); | |||
4302 | GEPIdx.push_back(Op); | |||
4303 | } | |||
4304 | ||||
4305 | I = GetElementPtrInst::Create(Ty, BasePtr, GEPIdx); | |||
4306 | ||||
4307 | InstructionList.push_back(I); | |||
4308 | if (InBounds) | |||
4309 | cast<GetElementPtrInst>(I)->setIsInBounds(true); | |||
4310 | break; | |||
4311 | } | |||
4312 | ||||
4313 | case bitc::FUNC_CODE_INST_EXTRACTVAL: { | |||
4314 | // EXTRACTVAL: [opty, opval, n x indices] | |||
4315 | unsigned OpNum = 0; | |||
4316 | Value *Agg; | |||
4317 | if (getValueTypePair(Record, OpNum, NextValueNo, Agg)) | |||
4318 | return error("Invalid record"); | |||
4319 | Type *Ty = Agg->getType(); | |||
4320 | ||||
4321 | unsigned RecSize = Record.size(); | |||
4322 | if (OpNum == RecSize) | |||
4323 | return error("EXTRACTVAL: Invalid instruction with 0 indices"); | |||
4324 | ||||
4325 | SmallVector<unsigned, 4> EXTRACTVALIdx; | |||
4326 | for (; OpNum != RecSize; ++OpNum) { | |||
4327 | bool IsArray = Ty->isArrayTy(); | |||
4328 | bool IsStruct = Ty->isStructTy(); | |||
4329 | uint64_t Index = Record[OpNum]; | |||
4330 | ||||
4331 | if (!IsStruct && !IsArray) | |||
4332 | return error("EXTRACTVAL: Invalid type"); | |||
4333 | if ((unsigned)Index != Index) | |||
4334 | return error("Invalid value"); | |||
4335 | if (IsStruct && Index >= Ty->getStructNumElements()) | |||
4336 | return error("EXTRACTVAL: Invalid struct index"); | |||
4337 | if (IsArray && Index >= Ty->getArrayNumElements()) | |||
4338 | return error("EXTRACTVAL: Invalid array index"); | |||
4339 | EXTRACTVALIdx.push_back((unsigned)Index); | |||
4340 | ||||
4341 | if (IsStruct) | |||
4342 | Ty = Ty->getStructElementType(Index); | |||
4343 | else | |||
4344 | Ty = Ty->getArrayElementType(); | |||
4345 | } | |||
4346 | ||||
4347 | I = ExtractValueInst::Create(Agg, EXTRACTVALIdx); | |||
4348 | InstructionList.push_back(I); | |||
4349 | break; | |||
4350 | } | |||
4351 | ||||
4352 | case bitc::FUNC_CODE_INST_INSERTVAL: { | |||
4353 | // INSERTVAL: [opty, opval, opty, opval, n x indices] | |||
4354 | unsigned OpNum = 0; | |||
4355 | Value *Agg; | |||
4356 | if (getValueTypePair(Record, OpNum, NextValueNo, Agg)) | |||
4357 | return error("Invalid record"); | |||
4358 | Value *Val; | |||
4359 | if (getValueTypePair(Record, OpNum, NextValueNo, Val)) | |||
4360 | return error("Invalid record"); | |||
4361 | ||||
4362 | unsigned RecSize = Record.size(); | |||
4363 | if (OpNum == RecSize) | |||
4364 | return error("INSERTVAL: Invalid instruction with 0 indices"); | |||
4365 | ||||
4366 | SmallVector<unsigned, 4> INSERTVALIdx; | |||
4367 | Type *CurTy = Agg->getType(); | |||
4368 | for (; OpNum != RecSize; ++OpNum) { | |||
4369 | bool IsArray = CurTy->isArrayTy(); | |||
4370 | bool IsStruct = CurTy->isStructTy(); | |||
4371 | uint64_t Index = Record[OpNum]; | |||
4372 | ||||
4373 | if (!IsStruct && !IsArray) | |||
4374 | return error("INSERTVAL: Invalid type"); | |||
4375 | if ((unsigned)Index != Index) | |||
4376 | return error("Invalid value"); | |||
4377 | if (IsStruct && Index >= CurTy->getStructNumElements()) | |||
4378 | return error("INSERTVAL: Invalid struct index"); | |||
4379 | if (IsArray && Index >= CurTy->getArrayNumElements()) | |||
4380 | return error("INSERTVAL: Invalid array index"); | |||
4381 | ||||
4382 | INSERTVALIdx.push_back((unsigned)Index); | |||
4383 | if (IsStruct) | |||
4384 | CurTy = CurTy->getStructElementType(Index); | |||
4385 | else | |||
4386 | CurTy = CurTy->getArrayElementType(); | |||
4387 | } | |||
4388 | ||||
4389 | if (CurTy != Val->getType()) | |||
4390 | return error("Inserted value type doesn't match aggregate type"); | |||
4391 | ||||
4392 | I = InsertValueInst::Create(Agg, Val, INSERTVALIdx); | |||
4393 | InstructionList.push_back(I); | |||
4394 | break; | |||
4395 | } | |||
4396 | ||||
4397 | case bitc::FUNC_CODE_INST_SELECT: { // SELECT: [opval, ty, opval, opval] | |||
4398 | // obsolete form of select | |||
4399 | // handles select i1 ... in old bitcode | |||
4400 | unsigned OpNum = 0; | |||
4401 | Value *TrueVal, *FalseVal, *Cond; | |||
4402 | if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal) || | |||
4403 | popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) || | |||
4404 | popValue(Record, OpNum, NextValueNo, Type::getInt1Ty(Context), Cond)) | |||
4405 | return error("Invalid record"); | |||
4406 | ||||
4407 | I = SelectInst::Create(Cond, TrueVal, FalseVal); | |||
4408 | InstructionList.push_back(I); | |||
4409 | break; | |||
4410 | } | |||
4411 | ||||
4412 | case bitc::FUNC_CODE_INST_VSELECT: {// VSELECT: [ty,opval,opval,predty,pred] | |||
4413 | // new form of select | |||
4414 | // handles select i1 or select [N x i1] | |||
4415 | unsigned OpNum = 0; | |||
4416 | Value *TrueVal, *FalseVal, *Cond; | |||
4417 | if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal) || | |||
4418 | popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) || | |||
4419 | getValueTypePair(Record, OpNum, NextValueNo, Cond)) | |||
4420 | return error("Invalid record"); | |||
4421 | ||||
4422 | // select condition can be either i1 or [N x i1] | |||
4423 | if (VectorType* vector_type = | |||
4424 | dyn_cast<VectorType>(Cond->getType())) { | |||
4425 | // expect <n x i1> | |||
4426 | if (vector_type->getElementType() != Type::getInt1Ty(Context)) | |||
4427 | return error("Invalid type for value"); | |||
4428 | } else { | |||
4429 | // expect i1 | |||
4430 | if (Cond->getType() != Type::getInt1Ty(Context)) | |||
4431 | return error("Invalid type for value"); | |||
4432 | } | |||
4433 | ||||
4434 | I = SelectInst::Create(Cond, TrueVal, FalseVal); | |||
4435 | InstructionList.push_back(I); | |||
4436 | if (OpNum < Record.size() && isa<FPMathOperator>(I)) { | |||
4437 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); | |||
4438 | if (FMF.any()) | |||
4439 | I->setFastMathFlags(FMF); | |||
4440 | } | |||
4441 | break; | |||
4442 | } | |||
4443 | ||||
4444 | case bitc::FUNC_CODE_INST_EXTRACTELT: { // EXTRACTELT: [opty, opval, opval] | |||
4445 | unsigned OpNum = 0; | |||
4446 | Value *Vec, *Idx; | |||
4447 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec) || | |||
4448 | getValueTypePair(Record, OpNum, NextValueNo, Idx)) | |||
4449 | return error("Invalid record"); | |||
4450 | if (!Vec->getType()->isVectorTy()) | |||
4451 | return error("Invalid type for value"); | |||
4452 | I = ExtractElementInst::Create(Vec, Idx); | |||
4453 | InstructionList.push_back(I); | |||
4454 | break; | |||
4455 | } | |||
4456 | ||||
4457 | case bitc::FUNC_CODE_INST_INSERTELT: { // INSERTELT: [ty, opval,opval,opval] | |||
4458 | unsigned OpNum = 0; | |||
4459 | Value *Vec, *Elt, *Idx; | |||
4460 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec)) | |||
4461 | return error("Invalid record"); | |||
4462 | if (!Vec->getType()->isVectorTy()) | |||
4463 | return error("Invalid type for value"); | |||
4464 | if (popValue(Record, OpNum, NextValueNo, | |||
4465 | cast<VectorType>(Vec->getType())->getElementType(), Elt) || | |||
4466 | getValueTypePair(Record, OpNum, NextValueNo, Idx)) | |||
4467 | return error("Invalid record"); | |||
4468 | I = InsertElementInst::Create(Vec, Elt, Idx); | |||
4469 | InstructionList.push_back(I); | |||
4470 | break; | |||
4471 | } | |||
4472 | ||||
4473 | case bitc::FUNC_CODE_INST_SHUFFLEVEC: {// SHUFFLEVEC: [opval,ty,opval,opval] | |||
4474 | unsigned OpNum = 0; | |||
4475 | Value *Vec1, *Vec2, *Mask; | |||
4476 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec1) || | |||
4477 | popValue(Record, OpNum, NextValueNo, Vec1->getType(), Vec2)) | |||
4478 | return error("Invalid record"); | |||
4479 | ||||
4480 | if (getValueTypePair(Record, OpNum, NextValueNo, Mask)) | |||
4481 | return error("Invalid record"); | |||
4482 | if (!Vec1->getType()->isVectorTy() || !Vec2->getType()->isVectorTy()) | |||
4483 | return error("Invalid type for value"); | |||
4484 | ||||
4485 | I = new ShuffleVectorInst(Vec1, Vec2, Mask); | |||
4486 | InstructionList.push_back(I); | |||
4487 | break; | |||
4488 | } | |||
4489 | ||||
4490 | case bitc::FUNC_CODE_INST_CMP: // CMP: [opty, opval, opval, pred] | |||
4491 | // Old form of ICmp/FCmp returning bool | |||
4492 | // Existed to differentiate between icmp/fcmp and vicmp/vfcmp which were | |||
4493 | // both legal on vectors but had different behaviour. | |||
4494 | case bitc::FUNC_CODE_INST_CMP2: { // CMP2: [opty, opval, opval, pred] | |||
4495 | // FCmp/ICmp returning bool or vector of bool | |||
4496 | ||||
4497 | unsigned OpNum = 0; | |||
4498 | Value *LHS, *RHS; | |||
4499 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || | |||
4500 | popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS)) | |||
4501 | return error("Invalid record"); | |||
4502 | ||||
4503 | if (OpNum >= Record.size()) | |||
4504 | return error( | |||
4505 | "Invalid record: operand number exceeded available operands"); | |||
4506 | ||||
4507 | unsigned PredVal = Record[OpNum]; | |||
4508 | bool IsFP = LHS->getType()->isFPOrFPVectorTy(); | |||
4509 | FastMathFlags FMF; | |||
4510 | if (IsFP && Record.size() > OpNum+1) | |||
4511 | FMF = getDecodedFastMathFlags(Record[++OpNum]); | |||
4512 | ||||
4513 | if (OpNum+1 != Record.size()) | |||
4514 | return error("Invalid record"); | |||
4515 | ||||
4516 | if (LHS->getType()->isFPOrFPVectorTy()) | |||
4517 | I = new FCmpInst((FCmpInst::Predicate)PredVal, LHS, RHS); | |||
4518 | else | |||
4519 | I = new ICmpInst((ICmpInst::Predicate)PredVal, LHS, RHS); | |||
4520 | ||||
4521 | if (FMF.any()) | |||
4522 | I->setFastMathFlags(FMF); | |||
4523 | InstructionList.push_back(I); | |||
4524 | break; | |||
4525 | } | |||
4526 | ||||
4527 | case bitc::FUNC_CODE_INST_RET: // RET: [opty,opval<optional>] | |||
4528 | { | |||
4529 | unsigned Size = Record.size(); | |||
4530 | if (Size == 0) { | |||
4531 | I = ReturnInst::Create(Context); | |||
4532 | InstructionList.push_back(I); | |||
4533 | break; | |||
4534 | } | |||
4535 | ||||
4536 | unsigned OpNum = 0; | |||
4537 | Value *Op = nullptr; | |||
4538 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | |||
4539 | return error("Invalid record"); | |||
4540 | if (OpNum != Record.size()) | |||
4541 | return error("Invalid record"); | |||
4542 | ||||
4543 | I = ReturnInst::Create(Context, Op); | |||
4544 | InstructionList.push_back(I); | |||
4545 | break; | |||
4546 | } | |||
4547 | case bitc::FUNC_CODE_INST_BR: { // BR: [bb#, bb#, opval] or [bb#] | |||
4548 | if (Record.size() != 1 && Record.size() != 3) | |||
4549 | return error("Invalid record"); | |||
4550 | BasicBlock *TrueDest = getBasicBlock(Record[0]); | |||
4551 | if (!TrueDest) | |||
4552 | return error("Invalid record"); | |||
4553 | ||||
4554 | if (Record.size() == 1) { | |||
4555 | I = BranchInst::Create(TrueDest); | |||
4556 | InstructionList.push_back(I); | |||
4557 | } | |||
4558 | else { | |||
4559 | BasicBlock *FalseDest = getBasicBlock(Record[1]); | |||
4560 | Value *Cond = getValue(Record, 2, NextValueNo, | |||
4561 | Type::getInt1Ty(Context)); | |||
4562 | if (!FalseDest || !Cond) | |||
4563 | return error("Invalid record"); | |||
4564 | I = BranchInst::Create(TrueDest, FalseDest, Cond); | |||
4565 | InstructionList.push_back(I); | |||
4566 | } | |||
4567 | break; | |||
4568 | } | |||
4569 | case bitc::FUNC_CODE_INST_CLEANUPRET: { // CLEANUPRET: [val] or [val,bb#] | |||
4570 | if (Record.size() != 1 && Record.size() != 2) | |||
4571 | return error("Invalid record"); | |||
4572 | unsigned Idx = 0; | |||
4573 | Value *CleanupPad = | |||
4574 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); | |||
4575 | if (!CleanupPad) | |||
4576 | return error("Invalid record"); | |||
4577 | BasicBlock *UnwindDest = nullptr; | |||
4578 | if (Record.size() == 2) { | |||
4579 | UnwindDest = getBasicBlock(Record[Idx++]); | |||
4580 | if (!UnwindDest) | |||
4581 | return error("Invalid record"); | |||
4582 | } | |||
4583 | ||||
4584 | I = CleanupReturnInst::Create(CleanupPad, UnwindDest); | |||
4585 | InstructionList.push_back(I); | |||
4586 | break; | |||
4587 | } | |||
4588 | case bitc::FUNC_CODE_INST_CATCHRET: { // CATCHRET: [val,bb#] | |||
4589 | if (Record.size() != 2) | |||
4590 | return error("Invalid record"); | |||
4591 | unsigned Idx = 0; | |||
4592 | Value *CatchPad = | |||
4593 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); | |||
4594 | if (!CatchPad) | |||
4595 | return error("Invalid record"); | |||
4596 | BasicBlock *BB = getBasicBlock(Record[Idx++]); | |||
4597 | if (!BB) | |||
4598 | return error("Invalid record"); | |||
4599 | ||||
4600 | I = CatchReturnInst::Create(CatchPad, BB); | |||
4601 | InstructionList.push_back(I); | |||
4602 | break; | |||
4603 | } | |||
4604 | case bitc::FUNC_CODE_INST_CATCHSWITCH: { // CATCHSWITCH: [tok,num,(bb)*,bb?] | |||
4605 | // We must have, at minimum, the outer scope and the number of arguments. | |||
4606 | if (Record.size() < 2) | |||
4607 | return error("Invalid record"); | |||
4608 | ||||
4609 | unsigned Idx = 0; | |||
4610 | ||||
4611 | Value *ParentPad = | |||
4612 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); | |||
4613 | ||||
4614 | unsigned NumHandlers = Record[Idx++]; | |||
4615 | ||||
4616 | SmallVector<BasicBlock *, 2> Handlers; | |||
4617 | for (unsigned Op = 0; Op != NumHandlers; ++Op) { | |||
4618 | BasicBlock *BB = getBasicBlock(Record[Idx++]); | |||
4619 | if (!BB) | |||
4620 | return error("Invalid record"); | |||
4621 | Handlers.push_back(BB); | |||
4622 | } | |||
4623 | ||||
4624 | BasicBlock *UnwindDest = nullptr; | |||
4625 | if (Idx + 1 == Record.size()) { | |||
4626 | UnwindDest = getBasicBlock(Record[Idx++]); | |||
4627 | if (!UnwindDest) | |||
4628 | return error("Invalid record"); | |||
4629 | } | |||
4630 | ||||
4631 | if (Record.size() != Idx) | |||
4632 | return error("Invalid record"); | |||
4633 | ||||
4634 | auto *CatchSwitch = | |||
4635 | CatchSwitchInst::Create(ParentPad, UnwindDest, NumHandlers); | |||
4636 | for (BasicBlock *Handler : Handlers) | |||
4637 | CatchSwitch->addHandler(Handler); | |||
4638 | I = CatchSwitch; | |||
4639 | InstructionList.push_back(I); | |||
4640 | break; | |||
4641 | } | |||
4642 | case bitc::FUNC_CODE_INST_CATCHPAD: | |||
4643 | case bitc::FUNC_CODE_INST_CLEANUPPAD: { // [tok,num,(ty,val)*] | |||
4644 | // We must have, at minimum, the outer scope and the number of arguments. | |||
4645 | if (Record.size() < 2) | |||
4646 | return error("Invalid record"); | |||
4647 | ||||
4648 | unsigned Idx = 0; | |||
4649 | ||||
4650 | Value *ParentPad = | |||
4651 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); | |||
4652 | ||||
4653 | unsigned NumArgOperands = Record[Idx++]; | |||
4654 | ||||
4655 | SmallVector<Value *, 2> Args; | |||
4656 | for (unsigned Op = 0; Op != NumArgOperands; ++Op) { | |||
4657 | Value *Val; | |||
4658 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) | |||
4659 | return error("Invalid record"); | |||
4660 | Args.push_back(Val); | |||
4661 | } | |||
4662 | ||||
4663 | if (Record.size() != Idx) | |||
4664 | return error("Invalid record"); | |||
4665 | ||||
4666 | if (BitCode == bitc::FUNC_CODE_INST_CLEANUPPAD) | |||
4667 | I = CleanupPadInst::Create(ParentPad, Args); | |||
4668 | else | |||
4669 | I = CatchPadInst::Create(ParentPad, Args); | |||
4670 | InstructionList.push_back(I); | |||
4671 | break; | |||
4672 | } | |||
4673 | case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...] | |||
4674 | // Check magic | |||
4675 | if ((Record[0] >> 16) == SWITCH_INST_MAGIC) { | |||
4676 | // "New" SwitchInst format with case ranges. The changes to write this | |||
4677 | // format were reverted but we still recognize bitcode that uses it. | |||
4678 | // Hopefully someday we will have support for case ranges and can use | |||
4679 | // this format again. | |||
4680 | ||||
4681 | Type *OpTy = getTypeByID(Record[1]); | |||
4682 | unsigned ValueBitWidth = cast<IntegerType>(OpTy)->getBitWidth(); | |||
4683 | ||||
4684 | Value *Cond = getValue(Record, 2, NextValueNo, OpTy); | |||
4685 | BasicBlock *Default = getBasicBlock(Record[3]); | |||
4686 | if (!OpTy || !Cond || !Default) | |||
4687 | return error("Invalid record"); | |||
4688 | ||||
4689 | unsigned NumCases = Record[4]; | |||
4690 | ||||
4691 | SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases); | |||
4692 | InstructionList.push_back(SI); | |||
4693 | ||||
4694 | unsigned CurIdx = 5; | |||
4695 | for (unsigned i = 0; i != NumCases; ++i) { | |||
4696 | SmallVector<ConstantInt*, 1> CaseVals; | |||
4697 | unsigned NumItems = Record[CurIdx++]; | |||
4698 | for (unsigned ci = 0; ci != NumItems; ++ci) { | |||
4699 | bool isSingleNumber = Record[CurIdx++]; | |||
4700 | ||||
4701 | APInt Low; | |||
4702 | unsigned ActiveWords = 1; | |||
4703 | if (ValueBitWidth > 64) | |||
4704 | ActiveWords = Record[CurIdx++]; | |||
4705 | Low = readWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords), | |||
4706 | ValueBitWidth); | |||
4707 | CurIdx += ActiveWords; | |||
4708 | ||||
4709 | if (!isSingleNumber) { | |||
4710 | ActiveWords = 1; | |||
4711 | if (ValueBitWidth > 64) | |||
4712 | ActiveWords = Record[CurIdx++]; | |||
4713 | APInt High = readWideAPInt( | |||
4714 | makeArrayRef(&Record[CurIdx], ActiveWords), ValueBitWidth); | |||
4715 | CurIdx += ActiveWords; | |||
4716 | ||||
4717 | // FIXME: It is not clear whether values in the range should be | |||
4718 | // compared as signed or unsigned values. The partially | |||
4719 | // implemented changes that used this format in the past used | |||
4720 | // unsigned comparisons. | |||
4721 | for ( ; Low.ule(High); ++Low) | |||
4722 | CaseVals.push_back(ConstantInt::get(Context, Low)); | |||
4723 | } else | |||
4724 | CaseVals.push_back(ConstantInt::get(Context, Low)); | |||
4725 | } | |||
4726 | BasicBlock *DestBB = getBasicBlock(Record[CurIdx++]); | |||
4727 | for (ConstantInt *Cst : CaseVals) | |||
4728 | SI->addCase(Cst, DestBB); | |||
4729 | } | |||
4730 | I = SI; | |||
4731 | break; | |||
4732 | } | |||
4733 | ||||
4734 | // Old SwitchInst format without case ranges. | |||
4735 | ||||
4736 | if (Record.size() < 3 || (Record.size() & 1) == 0) | |||
4737 | return error("Invalid record"); | |||
4738 | Type *OpTy = getTypeByID(Record[0]); | |||
4739 | Value *Cond = getValue(Record, 1, NextValueNo, OpTy); | |||
4740 | BasicBlock *Default = getBasicBlock(Record[2]); | |||
4741 | if (!OpTy || !Cond || !Default) | |||
4742 | return error("Invalid record"); | |||
4743 | unsigned NumCases = (Record.size()-3)/2; | |||
4744 | SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases); | |||
4745 | InstructionList.push_back(SI); | |||
4746 | for (unsigned i = 0, e = NumCases; i != e; ++i) { | |||
4747 | ConstantInt *CaseVal = | |||
4748 | dyn_cast_or_null<ConstantInt>(getFnValueByID(Record[3+i*2], OpTy)); | |||
4749 | BasicBlock *DestBB = getBasicBlock(Record[1+3+i*2]); | |||
4750 | if (!CaseVal || !DestBB) { | |||
4751 | delete SI; | |||
4752 | return error("Invalid record"); | |||
4753 | } | |||
4754 | SI->addCase(CaseVal, DestBB); | |||
4755 | } | |||
4756 | I = SI; | |||
4757 | break; | |||
4758 | } | |||
4759 | case bitc::FUNC_CODE_INST_INDIRECTBR: { // INDIRECTBR: [opty, op0, op1, ...] | |||
4760 | if (Record.size() < 2) | |||
4761 | return error("Invalid record"); | |||
4762 | Type *OpTy = getTypeByID(Record[0]); | |||
4763 | Value *Address = getValue(Record, 1, NextValueNo, OpTy); | |||
4764 | if (!OpTy || !Address) | |||
4765 | return error("Invalid record"); | |||
4766 | unsigned NumDests = Record.size()-2; | |||
4767 | IndirectBrInst *IBI = IndirectBrInst::Create(Address, NumDests); | |||
4768 | InstructionList.push_back(IBI); | |||
4769 | for (unsigned i = 0, e = NumDests; i != e; ++i) { | |||
4770 | if (BasicBlock *DestBB = getBasicBlock(Record[2+i])) { | |||
4771 | IBI->addDestination(DestBB); | |||
4772 | } else { | |||
4773 | delete IBI; | |||
4774 | return error("Invalid record"); | |||
4775 | } | |||
4776 | } | |||
4777 | I = IBI; | |||
4778 | break; | |||
4779 | } | |||
4780 | ||||
4781 | case bitc::FUNC_CODE_INST_INVOKE: { | |||
4782 | // INVOKE: [attrs, cc, normBB, unwindBB, fnty, op0,op1,op2, ...] | |||
4783 | if (Record.size() < 4) | |||
4784 | return error("Invalid record"); | |||
4785 | unsigned OpNum = 0; | |||
4786 | AttributeList PAL = getAttributes(Record[OpNum++]); | |||
4787 | unsigned CCInfo = Record[OpNum++]; | |||
4788 | BasicBlock *NormalBB = getBasicBlock(Record[OpNum++]); | |||
4789 | BasicBlock *UnwindBB = getBasicBlock(Record[OpNum++]); | |||
4790 | ||||
4791 | FunctionType *FTy = nullptr; | |||
4792 | if ((CCInfo >> 13) & 1) { | |||
4793 | FTy = dyn_cast<FunctionType>(getTypeByID(Record[OpNum++])); | |||
4794 | if (!FTy) | |||
4795 | return error("Explicit invoke type is not a function type"); | |||
4796 | } | |||
4797 | ||||
4798 | Value *Callee; | |||
4799 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee)) | |||
4800 | return error("Invalid record"); | |||
4801 | ||||
4802 | PointerType *CalleeTy = dyn_cast<PointerType>(Callee->getType()); | |||
4803 | if (!CalleeTy) | |||
4804 | return error("Callee is not a pointer"); | |||
4805 | if (!FTy) { | |||
4806 | FTy = | |||
4807 | dyn_cast<FunctionType>(Callee->getType()->getPointerElementType()); | |||
4808 | if (!FTy) | |||
4809 | return error("Callee is not of pointer to function type"); | |||
4810 | } else if (!CalleeTy->isOpaqueOrPointeeTypeMatches(FTy)) | |||
4811 | return error("Explicit invoke type does not match pointee type of " | |||
4812 | "callee operand"); | |||
4813 | if (Record.size() < FTy->getNumParams() + OpNum) | |||
4814 | return error("Insufficient operands to call"); | |||
4815 | ||||
4816 | SmallVector<Value*, 16> Ops; | |||
4817 | SmallVector<Type *, 16> ArgsTys; | |||
4818 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { | |||
4819 | Ops.push_back(getValue(Record, OpNum, NextValueNo, | |||
4820 | FTy->getParamType(i))); | |||
4821 | ArgsTys.push_back(FTy->getParamType(i)); | |||
4822 | if (!Ops.back()) | |||
4823 | return error("Invalid record"); | |||
4824 | } | |||
4825 | ||||
4826 | if (!FTy->isVarArg()) { | |||
4827 | if (Record.size() != OpNum) | |||
4828 | return error("Invalid record"); | |||
4829 | } else { | |||
4830 | // Read type/value pairs for varargs params. | |||
4831 | while (OpNum != Record.size()) { | |||
4832 | Value *Op; | |||
4833 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | |||
4834 | return error("Invalid record"); | |||
4835 | Ops.push_back(Op); | |||
4836 | ArgsTys.push_back(Op->getType()); | |||
4837 | } | |||
4838 | } | |||
4839 | ||||
4840 | I = InvokeInst::Create(FTy, Callee, NormalBB, UnwindBB, Ops, | |||
4841 | OperandBundles); | |||
4842 | OperandBundles.clear(); | |||
4843 | InstructionList.push_back(I); | |||
4844 | cast<InvokeInst>(I)->setCallingConv( | |||
4845 | static_cast<CallingConv::ID>(CallingConv::MaxID & CCInfo)); | |||
4846 | cast<InvokeInst>(I)->setAttributes(PAL); | |||
4847 | propagateAttributeTypes(cast<CallBase>(I), ArgsTys); | |||
4848 | ||||
4849 | break; | |||
4850 | } | |||
4851 | case bitc::FUNC_CODE_INST_RESUME: { // RESUME: [opval] | |||
4852 | unsigned Idx = 0; | |||
4853 | Value *Val = nullptr; | |||
4854 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) | |||
4855 | return error("Invalid record"); | |||
4856 | I = ResumeInst::Create(Val); | |||
4857 | InstructionList.push_back(I); | |||
4858 | break; | |||
4859 | } | |||
4860 | case bitc::FUNC_CODE_INST_CALLBR: { | |||
4861 | // CALLBR: [attr, cc, norm, transfs, fty, fnid, args] | |||
4862 | unsigned OpNum = 0; | |||
4863 | AttributeList PAL = getAttributes(Record[OpNum++]); | |||
4864 | unsigned CCInfo = Record[OpNum++]; | |||
4865 | ||||
4866 | BasicBlock *DefaultDest = getBasicBlock(Record[OpNum++]); | |||
4867 | unsigned NumIndirectDests = Record[OpNum++]; | |||
4868 | SmallVector<BasicBlock *, 16> IndirectDests; | |||
4869 | for (unsigned i = 0, e = NumIndirectDests; i != e; ++i) | |||
4870 | IndirectDests.push_back(getBasicBlock(Record[OpNum++])); | |||
4871 | ||||
4872 | FunctionType *FTy = nullptr; | |||
4873 | if ((CCInfo >> bitc::CALL_EXPLICIT_TYPE) & 1) { | |||
4874 | FTy = dyn_cast<FunctionType>(getTypeByID(Record[OpNum++])); | |||
4875 | if (!FTy) | |||
4876 | return error("Explicit call type is not a function type"); | |||
4877 | } | |||
4878 | ||||
4879 | Value *Callee; | |||
4880 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee)) | |||
4881 | return error("Invalid record"); | |||
4882 | ||||
4883 | PointerType *OpTy = dyn_cast<PointerType>(Callee->getType()); | |||
4884 | if (!OpTy) | |||
4885 | return error("Callee is not a pointer type"); | |||
4886 | if (!FTy) { | |||
4887 | FTy = | |||
4888 | dyn_cast<FunctionType>(Callee->getType()->getPointerElementType()); | |||
4889 | if (!FTy) | |||
4890 | return error("Callee is not of pointer to function type"); | |||
4891 | } else if (!OpTy->isOpaqueOrPointeeTypeMatches(FTy)) | |||
4892 | return error("Explicit call type does not match pointee type of " | |||
4893 | "callee operand"); | |||
4894 | if (Record.size() < FTy->getNumParams() + OpNum) | |||
4895 | return error("Insufficient operands to call"); | |||
4896 | ||||
4897 | SmallVector<Value*, 16> Args; | |||
4898 | SmallVector<Type *, 16> ArgsTys; | |||
4899 | // Read the fixed params. | |||
4900 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { | |||
4901 | Value *Arg; | |||
4902 | if (FTy->getParamType(i)->isLabelTy()) | |||
4903 | Arg = getBasicBlock(Record[OpNum]); | |||
4904 | else | |||
4905 | Arg = getValue(Record, OpNum, NextValueNo, FTy->getParamType(i)); | |||
4906 | if (!Arg) | |||
4907 | return error("Invalid record"); | |||
4908 | Args.push_back(Arg); | |||
4909 | ArgsTys.push_back(Arg->getType()); | |||
4910 | } | |||
4911 | ||||
4912 | // Read type/value pairs for varargs params. | |||
4913 | if (!FTy->isVarArg()) { | |||
4914 | if (OpNum != Record.size()) | |||
4915 | return error("Invalid record"); | |||
4916 | } else { | |||
4917 | while (OpNum != Record.size()) { | |||
4918 | Value *Op; | |||
4919 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | |||
4920 | return error("Invalid record"); | |||
4921 | Args.push_back(Op); | |||
4922 | ArgsTys.push_back(Op->getType()); | |||
4923 | } | |||
4924 | } | |||
4925 | ||||
4926 | I = CallBrInst::Create(FTy, Callee, DefaultDest, IndirectDests, Args, | |||
4927 | OperandBundles); | |||
4928 | OperandBundles.clear(); | |||
4929 | InstructionList.push_back(I); | |||
4930 | cast<CallBrInst>(I)->setCallingConv( | |||
4931 | static_cast<CallingConv::ID>((0x7ff & CCInfo) >> bitc::CALL_CCONV)); | |||
4932 | cast<CallBrInst>(I)->setAttributes(PAL); | |||
4933 | propagateAttributeTypes(cast<CallBase>(I), ArgsTys); | |||
4934 | break; | |||
4935 | } | |||
4936 | case bitc::FUNC_CODE_INST_UNREACHABLE: // UNREACHABLE | |||
4937 | I = new UnreachableInst(Context); | |||
4938 | InstructionList.push_back(I); | |||
4939 | break; | |||
4940 | case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, val0,bb0, ...] | |||
4941 | if (Record.empty()) | |||
4942 | return error("Invalid record"); | |||
4943 | // The first record specifies the type. | |||
4944 | Type *Ty = getTypeByID(Record[0]); | |||
4945 | if (!Ty) | |||
4946 | return error("Invalid record"); | |||
4947 | ||||
4948 | // Phi arguments are pairs of records of [value, basic block]. | |||
4949 | // There is an optional final record for fast-math-flags if this phi has a | |||
4950 | // floating-point type. | |||
4951 | size_t NumArgs = (Record.size() - 1) / 2; | |||
4952 | PHINode *PN = PHINode::Create(Ty, NumArgs); | |||
4953 | if ((Record.size() - 1) % 2 == 1 && !isa<FPMathOperator>(PN)) | |||
4954 | return error("Invalid record"); | |||
4955 | InstructionList.push_back(PN); | |||
4956 | ||||
4957 | for (unsigned i = 0; i != NumArgs; i++) { | |||
4958 | Value *V; | |||
4959 | // With the new function encoding, it is possible that operands have | |||
4960 | // negative IDs (for forward references). Use a signed VBR | |||
4961 | // representation to keep the encoding small. | |||
4962 | if (UseRelativeIDs) | |||
4963 | V = getValueSigned(Record, i * 2 + 1, NextValueNo, Ty); | |||
4964 | else | |||
4965 | V = getValue(Record, i * 2 + 1, NextValueNo, Ty); | |||
4966 | BasicBlock *BB = getBasicBlock(Record[i * 2 + 2]); | |||
4967 | if (!V || !BB) | |||
4968 | return error("Invalid record"); | |||
4969 | PN->addIncoming(V, BB); | |||
4970 | } | |||
4971 | I = PN; | |||
4972 | ||||
4973 | // If there are an even number of records, the final record must be FMF. | |||
4974 | if (Record.size() % 2 == 0) { | |||
4975 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4975, __extension__ __PRETTY_FUNCTION__)); | |||
4976 | FastMathFlags FMF = getDecodedFastMathFlags(Record[Record.size() - 1]); | |||
4977 | if (FMF.any()) | |||
4978 | I->setFastMathFlags(FMF); | |||
4979 | } | |||
4980 | ||||
4981 | break; | |||
4982 | } | |||
4983 | ||||
4984 | case bitc::FUNC_CODE_INST_LANDINGPAD: | |||
4985 | case bitc::FUNC_CODE_INST_LANDINGPAD_OLD: { | |||
4986 | // LANDINGPAD: [ty, val, val, num, (id0,val0 ...)?] | |||
4987 | unsigned Idx = 0; | |||
4988 | if (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD) { | |||
4989 | if (Record.size() < 3) | |||
4990 | return error("Invalid record"); | |||
4991 | } else { | |||
4992 | 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" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 4992, __extension__ __PRETTY_FUNCTION__)); | |||
4993 | if (Record.size() < 4) | |||
4994 | return error("Invalid record"); | |||
4995 | } | |||
4996 | Type *Ty = getTypeByID(Record[Idx++]); | |||
4997 | if (!Ty) | |||
4998 | return error("Invalid record"); | |||
4999 | if (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD) { | |||
5000 | Value *PersFn = nullptr; | |||
5001 | if (getValueTypePair(Record, Idx, NextValueNo, PersFn)) | |||
5002 | return error("Invalid record"); | |||
5003 | ||||
5004 | if (!F->hasPersonalityFn()) | |||
5005 | F->setPersonalityFn(cast<Constant>(PersFn)); | |||
5006 | else if (F->getPersonalityFn() != cast<Constant>(PersFn)) | |||
5007 | return error("Personality function mismatch"); | |||
5008 | } | |||
5009 | ||||
5010 | bool IsCleanup = !!Record[Idx++]; | |||
5011 | unsigned NumClauses = Record[Idx++]; | |||
5012 | LandingPadInst *LP = LandingPadInst::Create(Ty, NumClauses); | |||
5013 | LP->setCleanup(IsCleanup); | |||
5014 | for (unsigned J = 0; J != NumClauses; ++J) { | |||
5015 | LandingPadInst::ClauseType CT = | |||
5016 | LandingPadInst::ClauseType(Record[Idx++]); (void)CT; | |||
5017 | Value *Val; | |||
5018 | ||||
5019 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) { | |||
5020 | delete LP; | |||
5021 | return error("Invalid record"); | |||
5022 | } | |||
5023 | ||||
5024 | 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!\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5026, __extension__ __PRETTY_FUNCTION__)) | |||
5025 | !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!\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5026, __extension__ __PRETTY_FUNCTION__)) | |||
5026 | "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!\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5026, __extension__ __PRETTY_FUNCTION__)); | |||
5027 | 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!\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5029, __extension__ __PRETTY_FUNCTION__)) | |||
5028 | 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!\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5029, __extension__ __PRETTY_FUNCTION__)) | |||
5029 | "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!\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5029, __extension__ __PRETTY_FUNCTION__)); | |||
5030 | LP->addClause(cast<Constant>(Val)); | |||
5031 | } | |||
5032 | ||||
5033 | I = LP; | |||
5034 | InstructionList.push_back(I); | |||
5035 | break; | |||
5036 | } | |||
5037 | ||||
5038 | case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align] | |||
5039 | if (Record.size() != 4) | |||
5040 | return error("Invalid record"); | |||
5041 | using APV = AllocaPackedValues; | |||
5042 | const uint64_t Rec = Record[3]; | |||
5043 | const bool InAlloca = Bitfield::get<APV::UsedWithInAlloca>(Rec); | |||
5044 | const bool SwiftError = Bitfield::get<APV::SwiftError>(Rec); | |||
5045 | Type *Ty = getTypeByID(Record[0]); | |||
5046 | if (!Bitfield::get<APV::ExplicitType>(Rec)) { | |||
5047 | Ty = getPtrElementTypeByID(Record[0]); | |||
5048 | if (!Ty) | |||
5049 | return error("Missing element type for old-style alloca"); | |||
5050 | } | |||
5051 | Type *OpTy = getTypeByID(Record[1]); | |||
5052 | Value *Size = getFnValueByID(Record[2], OpTy); | |||
5053 | MaybeAlign Align; | |||
5054 | uint64_t AlignExp = | |||
5055 | Bitfield::get<APV::AlignLower>(Rec) | | |||
5056 | (Bitfield::get<APV::AlignUpper>(Rec) << APV::AlignLower::Bits); | |||
5057 | if (Error Err = parseAlignmentValue(AlignExp, Align)) { | |||
5058 | return Err; | |||
5059 | } | |||
5060 | if (!Ty || !Size) | |||
5061 | return error("Invalid record"); | |||
5062 | ||||
5063 | // FIXME: Make this an optional field. | |||
5064 | const DataLayout &DL = TheModule->getDataLayout(); | |||
5065 | unsigned AS = DL.getAllocaAddrSpace(); | |||
5066 | ||||
5067 | SmallPtrSet<Type *, 4> Visited; | |||
5068 | if (!Align && !Ty->isSized(&Visited)) | |||
5069 | return error("alloca of unsized type"); | |||
5070 | if (!Align) | |||
5071 | Align = DL.getPrefTypeAlign(Ty); | |||
5072 | ||||
5073 | AllocaInst *AI = new AllocaInst(Ty, AS, Size, *Align); | |||
5074 | AI->setUsedWithInAlloca(InAlloca); | |||
5075 | AI->setSwiftError(SwiftError); | |||
5076 | I = AI; | |||
5077 | InstructionList.push_back(I); | |||
5078 | break; | |||
5079 | } | |||
5080 | case bitc::FUNC_CODE_INST_LOAD: { // LOAD: [opty, op, align, vol] | |||
5081 | unsigned OpNum = 0; | |||
5082 | Value *Op; | |||
5083 | if (getValueTypePair(Record, OpNum, NextValueNo, Op) || | |||
5084 | (OpNum + 2 != Record.size() && OpNum + 3 != Record.size())) | |||
5085 | return error("Invalid record"); | |||
5086 | ||||
5087 | if (!isa<PointerType>(Op->getType())) | |||
5088 | return error("Load operand is not a pointer type"); | |||
5089 | ||||
5090 | Type *Ty = nullptr; | |||
5091 | if (OpNum + 3 == Record.size()) { | |||
5092 | Ty = getTypeByID(Record[OpNum++]); | |||
5093 | } else { | |||
5094 | Ty = Op->getType()->getPointerElementType(); | |||
5095 | } | |||
5096 | ||||
5097 | if (Error Err = typeCheckLoadStoreInst(Ty, Op->getType())) | |||
5098 | return Err; | |||
5099 | ||||
5100 | MaybeAlign Align; | |||
5101 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) | |||
5102 | return Err; | |||
5103 | SmallPtrSet<Type *, 4> Visited; | |||
5104 | if (!Align && !Ty->isSized(&Visited)) | |||
5105 | return error("load of unsized type"); | |||
5106 | if (!Align) | |||
5107 | Align = TheModule->getDataLayout().getABITypeAlign(Ty); | |||
5108 | I = new LoadInst(Ty, Op, "", Record[OpNum + 1], *Align); | |||
5109 | InstructionList.push_back(I); | |||
5110 | break; | |||
5111 | } | |||
5112 | case bitc::FUNC_CODE_INST_LOADATOMIC: { | |||
5113 | // LOADATOMIC: [opty, op, align, vol, ordering, ssid] | |||
5114 | unsigned OpNum = 0; | |||
5115 | Value *Op; | |||
5116 | if (getValueTypePair(Record, OpNum, NextValueNo, Op) || | |||
5117 | (OpNum + 4 != Record.size() && OpNum + 5 != Record.size())) | |||
5118 | return error("Invalid record"); | |||
5119 | ||||
5120 | if (!isa<PointerType>(Op->getType())) | |||
5121 | return error("Load operand is not a pointer type"); | |||
5122 | ||||
5123 | Type *Ty = nullptr; | |||
5124 | if (OpNum + 5 == Record.size()) { | |||
5125 | Ty = getTypeByID(Record[OpNum++]); | |||
5126 | } else { | |||
5127 | Ty = Op->getType()->getPointerElementType(); | |||
5128 | } | |||
5129 | ||||
5130 | if (Error Err = typeCheckLoadStoreInst(Ty, Op->getType())) | |||
5131 | return Err; | |||
5132 | ||||
5133 | AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); | |||
5134 | if (Ordering == AtomicOrdering::NotAtomic || | |||
5135 | Ordering == AtomicOrdering::Release || | |||
5136 | Ordering == AtomicOrdering::AcquireRelease) | |||
5137 | return error("Invalid record"); | |||
5138 | if (Ordering != AtomicOrdering::NotAtomic && Record[OpNum] == 0) | |||
5139 | return error("Invalid record"); | |||
5140 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); | |||
5141 | ||||
5142 | MaybeAlign Align; | |||
5143 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) | |||
5144 | return Err; | |||
5145 | if (!Align) | |||
5146 | return error("Alignment missing from atomic load"); | |||
5147 | I = new LoadInst(Ty, Op, "", Record[OpNum + 1], *Align, Ordering, SSID); | |||
5148 | InstructionList.push_back(I); | |||
5149 | break; | |||
5150 | } | |||
5151 | case bitc::FUNC_CODE_INST_STORE: | |||
5152 | case bitc::FUNC_CODE_INST_STORE_OLD: { // STORE2:[ptrty, ptr, val, align, vol] | |||
5153 | unsigned OpNum = 0; | |||
5154 | Value *Val, *Ptr; | |||
5155 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) || | |||
5156 | (BitCode == bitc::FUNC_CODE_INST_STORE | |||
5157 | ? getValueTypePair(Record, OpNum, NextValueNo, Val) | |||
5158 | : popValue(Record, OpNum, NextValueNo, | |||
5159 | Ptr->getType()->getPointerElementType(), Val)) || | |||
5160 | OpNum + 2 != Record.size()) | |||
5161 | return error("Invalid record"); | |||
5162 | ||||
5163 | if (Error Err = typeCheckLoadStoreInst(Val->getType(), Ptr->getType())) | |||
5164 | return Err; | |||
5165 | MaybeAlign Align; | |||
5166 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) | |||
5167 | return Err; | |||
5168 | SmallPtrSet<Type *, 4> Visited; | |||
5169 | if (!Align && !Val->getType()->isSized(&Visited)) | |||
5170 | return error("store of unsized type"); | |||
5171 | if (!Align) | |||
5172 | Align = TheModule->getDataLayout().getABITypeAlign(Val->getType()); | |||
5173 | I = new StoreInst(Val, Ptr, Record[OpNum + 1], *Align); | |||
5174 | InstructionList.push_back(I); | |||
5175 | break; | |||
5176 | } | |||
5177 | case bitc::FUNC_CODE_INST_STOREATOMIC: | |||
5178 | case bitc::FUNC_CODE_INST_STOREATOMIC_OLD: { | |||
5179 | // STOREATOMIC: [ptrty, ptr, val, align, vol, ordering, ssid] | |||
5180 | unsigned OpNum = 0; | |||
5181 | Value *Val, *Ptr; | |||
5182 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr) || | |||
5183 | !isa<PointerType>(Ptr->getType()) || | |||
5184 | (BitCode == bitc::FUNC_CODE_INST_STOREATOMIC | |||
5185 | ? getValueTypePair(Record, OpNum, NextValueNo, Val) | |||
5186 | : popValue(Record, OpNum, NextValueNo, | |||
5187 | Ptr->getType()->getPointerElementType(), Val)) || | |||
5188 | OpNum + 4 != Record.size()) | |||
5189 | return error("Invalid record"); | |||
5190 | ||||
5191 | if (Error Err = typeCheckLoadStoreInst(Val->getType(), Ptr->getType())) | |||
5192 | return Err; | |||
5193 | AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); | |||
5194 | if (Ordering == AtomicOrdering::NotAtomic || | |||
5195 | Ordering == AtomicOrdering::Acquire || | |||
5196 | Ordering == AtomicOrdering::AcquireRelease) | |||
5197 | return error("Invalid record"); | |||
5198 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); | |||
5199 | if (Ordering != AtomicOrdering::NotAtomic && Record[OpNum] == 0) | |||
5200 | return error("Invalid record"); | |||
5201 | ||||
5202 | MaybeAlign Align; | |||
5203 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) | |||
5204 | return Err; | |||
5205 | if (!Align) | |||
5206 | return error("Alignment missing from atomic store"); | |||
5207 | I = new StoreInst(Val, Ptr, Record[OpNum + 1], *Align, Ordering, SSID); | |||
5208 | InstructionList.push_back(I); | |||
5209 | break; | |||
5210 | } | |||
5211 | case bitc::FUNC_CODE_INST_CMPXCHG_OLD: { | |||
5212 | // CMPXCHG_OLD: [ptrty, ptr, cmp, val, vol, ordering, synchscope, | |||
5213 | // failure_ordering?, weak?] | |||
5214 | const size_t NumRecords = Record.size(); | |||
5215 | unsigned OpNum = 0; | |||
5216 | Value *Ptr = nullptr; | |||
5217 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr)) | |||
5218 | return error("Invalid record"); | |||
5219 | ||||
5220 | if (!isa<PointerType>(Ptr->getType())) | |||
5221 | return error("Cmpxchg operand is not a pointer type"); | |||
5222 | ||||
5223 | Value *Cmp = nullptr; | |||
5224 | if (popValue(Record, OpNum, NextValueNo, | |||
5225 | cast<PointerType>(Ptr->getType())->getPointerElementType(), | |||
5226 | Cmp)) | |||
5227 | return error("Invalid record"); | |||
5228 | ||||
5229 | Value *New = nullptr; | |||
5230 | if (popValue(Record, OpNum, NextValueNo, Cmp->getType(), New) || | |||
5231 | NumRecords < OpNum + 3 || NumRecords > OpNum + 5) | |||
5232 | return error("Invalid record"); | |||
5233 | ||||
5234 | const AtomicOrdering SuccessOrdering = | |||
5235 | getDecodedOrdering(Record[OpNum + 1]); | |||
5236 | if (SuccessOrdering == AtomicOrdering::NotAtomic || | |||
5237 | SuccessOrdering == AtomicOrdering::Unordered) | |||
5238 | return error("Invalid record"); | |||
5239 | ||||
5240 | const SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 2]); | |||
5241 | ||||
5242 | if (Error Err = typeCheckLoadStoreInst(Cmp->getType(), Ptr->getType())) | |||
5243 | return Err; | |||
5244 | ||||
5245 | const AtomicOrdering FailureOrdering = | |||
5246 | NumRecords < 7 | |||
5247 | ? AtomicCmpXchgInst::getStrongestFailureOrdering(SuccessOrdering) | |||
5248 | : getDecodedOrdering(Record[OpNum + 3]); | |||
5249 | ||||
5250 | if (FailureOrdering == AtomicOrdering::NotAtomic || | |||
5251 | FailureOrdering == AtomicOrdering::Unordered) | |||
5252 | return error("Invalid record"); | |||
5253 | ||||
5254 | const Align Alignment( | |||
5255 | TheModule->getDataLayout().getTypeStoreSize(Cmp->getType())); | |||
5256 | ||||
5257 | I = new AtomicCmpXchgInst(Ptr, Cmp, New, Alignment, SuccessOrdering, | |||
5258 | FailureOrdering, SSID); | |||
5259 | cast<AtomicCmpXchgInst>(I)->setVolatile(Record[OpNum]); | |||
5260 | ||||
5261 | if (NumRecords < 8) { | |||
5262 | // Before weak cmpxchgs existed, the instruction simply returned the | |||
5263 | // value loaded from memory, so bitcode files from that era will be | |||
5264 | // expecting the first component of a modern cmpxchg. | |||
5265 | CurBB->getInstList().push_back(I); | |||
5266 | I = ExtractValueInst::Create(I, 0); | |||
5267 | } else { | |||
5268 | cast<AtomicCmpXchgInst>(I)->setWeak(Record[OpNum + 4]); | |||
5269 | } | |||
5270 | ||||
5271 | InstructionList.push_back(I); | |||
5272 | break; | |||
5273 | } | |||
5274 | case bitc::FUNC_CODE_INST_CMPXCHG: { | |||
5275 | // CMPXCHG: [ptrty, ptr, cmp, val, vol, success_ordering, synchscope, | |||
5276 | // failure_ordering, weak, align?] | |||
5277 | const size_t NumRecords = Record.size(); | |||
5278 | unsigned OpNum = 0; | |||
5279 | Value *Ptr = nullptr; | |||
5280 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr)) | |||
5281 | return error("Invalid record"); | |||
5282 | ||||
5283 | if (!isa<PointerType>(Ptr->getType())) | |||
5284 | return error("Cmpxchg operand is not a pointer type"); | |||
5285 | ||||
5286 | Value *Cmp = nullptr; | |||
5287 | if (getValueTypePair(Record, OpNum, NextValueNo, Cmp)) | |||
5288 | return error("Invalid record"); | |||
5289 | ||||
5290 | Value *Val = nullptr; | |||
5291 | if (popValue(Record, OpNum, NextValueNo, Cmp->getType(), Val)) | |||
5292 | return error("Invalid record"); | |||
5293 | ||||
5294 | if (NumRecords < OpNum + 3 || NumRecords > OpNum + 6) | |||
5295 | return error("Invalid record"); | |||
5296 | ||||
5297 | const bool IsVol = Record[OpNum]; | |||
5298 | ||||
5299 | const AtomicOrdering SuccessOrdering = | |||
5300 | getDecodedOrdering(Record[OpNum + 1]); | |||
5301 | if (!AtomicCmpXchgInst::isValidSuccessOrdering(SuccessOrdering)) | |||
5302 | return error("Invalid cmpxchg success ordering"); | |||
5303 | ||||
5304 | const SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 2]); | |||
5305 | ||||
5306 | if (Error Err = typeCheckLoadStoreInst(Cmp->getType(), Ptr->getType())) | |||
5307 | return Err; | |||
5308 | ||||
5309 | const AtomicOrdering FailureOrdering = | |||
5310 | getDecodedOrdering(Record[OpNum + 3]); | |||
5311 | if (!AtomicCmpXchgInst::isValidFailureOrdering(FailureOrdering)) | |||
5312 | return error("Invalid cmpxchg failure ordering"); | |||
5313 | ||||
5314 | const bool IsWeak = Record[OpNum + 4]; | |||
5315 | ||||
5316 | MaybeAlign Alignment; | |||
5317 | ||||
5318 | if (NumRecords == (OpNum + 6)) { | |||
5319 | if (Error Err = parseAlignmentValue(Record[OpNum + 5], Alignment)) | |||
5320 | return Err; | |||
5321 | } | |||
5322 | if (!Alignment) | |||
5323 | Alignment = | |||
5324 | Align(TheModule->getDataLayout().getTypeStoreSize(Cmp->getType())); | |||
5325 | ||||
5326 | I = new AtomicCmpXchgInst(Ptr, Cmp, Val, *Alignment, SuccessOrdering, | |||
5327 | FailureOrdering, SSID); | |||
5328 | cast<AtomicCmpXchgInst>(I)->setVolatile(IsVol); | |||
5329 | cast<AtomicCmpXchgInst>(I)->setWeak(IsWeak); | |||
5330 | ||||
5331 | InstructionList.push_back(I); | |||
5332 | break; | |||
5333 | } | |||
5334 | case bitc::FUNC_CODE_INST_ATOMICRMW_OLD: | |||
5335 | case bitc::FUNC_CODE_INST_ATOMICRMW: { | |||
5336 | // ATOMICRMW_OLD: [ptrty, ptr, val, op, vol, ordering, ssid, align?] | |||
5337 | // ATOMICRMW: [ptrty, ptr, valty, val, op, vol, ordering, ssid, align?] | |||
5338 | const size_t NumRecords = Record.size(); | |||
5339 | unsigned OpNum = 0; | |||
5340 | ||||
5341 | Value *Ptr = nullptr; | |||
5342 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr)) | |||
5343 | return error("Invalid record"); | |||
5344 | ||||
5345 | if (!isa<PointerType>(Ptr->getType())) | |||
5346 | return error("Invalid record"); | |||
5347 | ||||
5348 | Value *Val = nullptr; | |||
5349 | if (BitCode == bitc::FUNC_CODE_INST_ATOMICRMW_OLD) { | |||
5350 | if (popValue(Record, OpNum, NextValueNo, | |||
5351 | cast<PointerType>(Ptr->getType())->getPointerElementType(), | |||
5352 | Val)) | |||
5353 | return error("Invalid record"); | |||
5354 | } else { | |||
5355 | if (getValueTypePair(Record, OpNum, NextValueNo, Val)) | |||
5356 | return error("Invalid record"); | |||
5357 | } | |||
5358 | ||||
5359 | if (!(NumRecords == (OpNum + 4) || NumRecords == (OpNum + 5))) | |||
5360 | return error("Invalid record"); | |||
5361 | ||||
5362 | const AtomicRMWInst::BinOp Operation = | |||
5363 | getDecodedRMWOperation(Record[OpNum]); | |||
5364 | if (Operation < AtomicRMWInst::FIRST_BINOP || | |||
5365 | Operation > AtomicRMWInst::LAST_BINOP) | |||
5366 | return error("Invalid record"); | |||
5367 | ||||
5368 | const bool IsVol = Record[OpNum + 1]; | |||
5369 | ||||
5370 | const AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); | |||
5371 | if (Ordering == AtomicOrdering::NotAtomic || | |||
5372 | Ordering == AtomicOrdering::Unordered) | |||
5373 | return error("Invalid record"); | |||
5374 | ||||
5375 | const SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); | |||
5376 | ||||
5377 | MaybeAlign Alignment; | |||
5378 | ||||
5379 | if (NumRecords == (OpNum + 5)) { | |||
5380 | if (Error Err = parseAlignmentValue(Record[OpNum + 4], Alignment)) | |||
5381 | return Err; | |||
5382 | } | |||
5383 | ||||
5384 | if (!Alignment) | |||
5385 | Alignment = | |||
5386 | Align(TheModule->getDataLayout().getTypeStoreSize(Val->getType())); | |||
5387 | ||||
5388 | I = new AtomicRMWInst(Operation, Ptr, Val, *Alignment, Ordering, SSID); | |||
5389 | cast<AtomicRMWInst>(I)->setVolatile(IsVol); | |||
5390 | ||||
5391 | InstructionList.push_back(I); | |||
5392 | break; | |||
5393 | } | |||
5394 | case bitc::FUNC_CODE_INST_FENCE: { // FENCE:[ordering, ssid] | |||
5395 | if (2 != Record.size()) | |||
5396 | return error("Invalid record"); | |||
5397 | AtomicOrdering Ordering = getDecodedOrdering(Record[0]); | |||
5398 | if (Ordering == AtomicOrdering::NotAtomic || | |||
5399 | Ordering == AtomicOrdering::Unordered || | |||
5400 | Ordering == AtomicOrdering::Monotonic) | |||
5401 | return error("Invalid record"); | |||
5402 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[1]); | |||
5403 | I = new FenceInst(Context, Ordering, SSID); | |||
5404 | InstructionList.push_back(I); | |||
5405 | break; | |||
5406 | } | |||
5407 | case bitc::FUNC_CODE_INST_CALL: { | |||
5408 | // CALL: [paramattrs, cc, fmf, fnty, fnid, arg0, arg1...] | |||
5409 | if (Record.size() < 3) | |||
5410 | return error("Invalid record"); | |||
5411 | ||||
5412 | unsigned OpNum = 0; | |||
5413 | AttributeList PAL = getAttributes(Record[OpNum++]); | |||
5414 | unsigned CCInfo = Record[OpNum++]; | |||
5415 | ||||
5416 | FastMathFlags FMF; | |||
5417 | if ((CCInfo >> bitc::CALL_FMF) & 1) { | |||
5418 | FMF = getDecodedFastMathFlags(Record[OpNum++]); | |||
5419 | if (!FMF.any()) | |||
5420 | return error("Fast math flags indicator set for call with no FMF"); | |||
5421 | } | |||
5422 | ||||
5423 | FunctionType *FTy = nullptr; | |||
5424 | if ((CCInfo >> bitc::CALL_EXPLICIT_TYPE) & 1) { | |||
5425 | FTy = dyn_cast<FunctionType>(getTypeByID(Record[OpNum++])); | |||
5426 | if (!FTy) | |||
5427 | return error("Explicit call type is not a function type"); | |||
5428 | } | |||
5429 | ||||
5430 | Value *Callee; | |||
5431 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee)) | |||
5432 | return error("Invalid record"); | |||
5433 | ||||
5434 | PointerType *OpTy = dyn_cast<PointerType>(Callee->getType()); | |||
5435 | if (!OpTy) | |||
5436 | return error("Callee is not a pointer type"); | |||
5437 | if (!FTy) { | |||
5438 | FTy = | |||
5439 | dyn_cast<FunctionType>(Callee->getType()->getPointerElementType()); | |||
5440 | if (!FTy) | |||
5441 | return error("Callee is not of pointer to function type"); | |||
5442 | } else if (!OpTy->isOpaqueOrPointeeTypeMatches(FTy)) | |||
5443 | return error("Explicit call type does not match pointee type of " | |||
5444 | "callee operand"); | |||
5445 | if (Record.size() < FTy->getNumParams() + OpNum) | |||
5446 | return error("Insufficient operands to call"); | |||
5447 | ||||
5448 | SmallVector<Value*, 16> Args; | |||
5449 | SmallVector<Type *, 16> ArgsTys; | |||
5450 | // Read the fixed params. | |||
5451 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { | |||
5452 | if (FTy->getParamType(i)->isLabelTy()) | |||
5453 | Args.push_back(getBasicBlock(Record[OpNum])); | |||
5454 | else | |||
5455 | Args.push_back(getValue(Record, OpNum, NextValueNo, | |||
5456 | FTy->getParamType(i))); | |||
5457 | ArgsTys.push_back(FTy->getParamType(i)); | |||
5458 | if (!Args.back()) | |||
5459 | return error("Invalid record"); | |||
5460 | } | |||
5461 | ||||
5462 | // Read type/value pairs for varargs params. | |||
5463 | if (!FTy->isVarArg()) { | |||
5464 | if (OpNum != Record.size()) | |||
5465 | return error("Invalid record"); | |||
5466 | } else { | |||
5467 | while (OpNum != Record.size()) { | |||
5468 | Value *Op; | |||
5469 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | |||
5470 | return error("Invalid record"); | |||
5471 | Args.push_back(Op); | |||
5472 | ArgsTys.push_back(Op->getType()); | |||
5473 | } | |||
5474 | } | |||
5475 | ||||
5476 | I = CallInst::Create(FTy, Callee, Args, OperandBundles); | |||
5477 | OperandBundles.clear(); | |||
5478 | InstructionList.push_back(I); | |||
5479 | cast<CallInst>(I)->setCallingConv( | |||
5480 | static_cast<CallingConv::ID>((0x7ff & CCInfo) >> bitc::CALL_CCONV)); | |||
5481 | CallInst::TailCallKind TCK = CallInst::TCK_None; | |||
5482 | if (CCInfo & 1 << bitc::CALL_TAIL) | |||
5483 | TCK = CallInst::TCK_Tail; | |||
5484 | if (CCInfo & (1 << bitc::CALL_MUSTTAIL)) | |||
5485 | TCK = CallInst::TCK_MustTail; | |||
5486 | if (CCInfo & (1 << bitc::CALL_NOTAIL)) | |||
5487 | TCK = CallInst::TCK_NoTail; | |||
5488 | cast<CallInst>(I)->setTailCallKind(TCK); | |||
5489 | cast<CallInst>(I)->setAttributes(PAL); | |||
5490 | propagateAttributeTypes(cast<CallBase>(I), ArgsTys); | |||
5491 | if (FMF.any()) { | |||
5492 | if (!isa<FPMathOperator>(I)) | |||
5493 | return error("Fast-math-flags specified for call without " | |||
5494 | "floating-point scalar or vector return type"); | |||
5495 | I->setFastMathFlags(FMF); | |||
5496 | } | |||
5497 | break; | |||
5498 | } | |||
5499 | case bitc::FUNC_CODE_INST_VAARG: { // VAARG: [valistty, valist, instty] | |||
5500 | if (Record.size() < 3) | |||
5501 | return error("Invalid record"); | |||
5502 | Type *OpTy = getTypeByID(Record[0]); | |||
5503 | Value *Op = getValue(Record, 1, NextValueNo, OpTy); | |||
5504 | Type *ResTy = getTypeByID(Record[2]); | |||
5505 | if (!OpTy || !Op || !ResTy) | |||
5506 | return error("Invalid record"); | |||
5507 | I = new VAArgInst(Op, ResTy); | |||
5508 | InstructionList.push_back(I); | |||
5509 | break; | |||
5510 | } | |||
5511 | ||||
5512 | case bitc::FUNC_CODE_OPERAND_BUNDLE: { | |||
5513 | // A call or an invoke can be optionally prefixed with some variable | |||
5514 | // number of operand bundle blocks. These blocks are read into | |||
5515 | // OperandBundles and consumed at the next call or invoke instruction. | |||
5516 | ||||
5517 | if (Record.empty() || Record[0] >= BundleTags.size()) | |||
5518 | return error("Invalid record"); | |||
5519 | ||||
5520 | std::vector<Value *> Inputs; | |||
5521 | ||||
5522 | unsigned OpNum = 1; | |||
5523 | while (OpNum != Record.size()) { | |||
5524 | Value *Op; | |||
5525 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | |||
5526 | return error("Invalid record"); | |||
5527 | Inputs.push_back(Op); | |||
5528 | } | |||
5529 | ||||
5530 | OperandBundles.emplace_back(BundleTags[Record[0]], std::move(Inputs)); | |||
5531 | continue; | |||
5532 | } | |||
5533 | ||||
5534 | case bitc::FUNC_CODE_INST_FREEZE: { // FREEZE: [opty,opval] | |||
5535 | unsigned OpNum = 0; | |||
5536 | Value *Op = nullptr; | |||
5537 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | |||
5538 | return error("Invalid record"); | |||
5539 | if (OpNum != Record.size()) | |||
5540 | return error("Invalid record"); | |||
5541 | ||||
5542 | I = new FreezeInst(Op); | |||
5543 | InstructionList.push_back(I); | |||
5544 | break; | |||
5545 | } | |||
5546 | } | |||
5547 | ||||
5548 | // Add instruction to end of current BB. If there is no current BB, reject | |||
5549 | // this file. | |||
5550 | if (!CurBB) { | |||
5551 | I->deleteValue(); | |||
5552 | return error("Invalid instruction with no BB"); | |||
5553 | } | |||
5554 | if (!OperandBundles.empty()) { | |||
5555 | I->deleteValue(); | |||
5556 | return error("Operand bundles found with no consumer"); | |||
5557 | } | |||
5558 | CurBB->getInstList().push_back(I); | |||
5559 | ||||
5560 | // If this was a terminator instruction, move to the next block. | |||
5561 | if (I->isTerminator()) { | |||
5562 | ++CurBBNo; | |||
5563 | CurBB = CurBBNo < FunctionBBs.size() ? FunctionBBs[CurBBNo] : nullptr; | |||
5564 | } | |||
5565 | ||||
5566 | // Non-void values get registered in the value table for future use. | |||
5567 | if (!I->getType()->isVoidTy()) | |||
5568 | ValueList.assignValue(I, NextValueNo++); | |||
5569 | } | |||
5570 | ||||
5571 | OutOfRecordLoop: | |||
5572 | ||||
5573 | if (!OperandBundles.empty()) | |||
5574 | return error("Operand bundles found with no consumer"); | |||
5575 | ||||
5576 | // Check the function list for unresolved values. | |||
5577 | if (Argument *A = dyn_cast<Argument>(ValueList.back())) { | |||
5578 | if (!A->getParent()) { | |||
5579 | // We found at least one unresolved value. Nuke them all to avoid leaks. | |||
5580 | for (unsigned i = ModuleValueListSize, e = ValueList.size(); i != e; ++i){ | |||
5581 | if ((A = dyn_cast_or_null<Argument>(ValueList[i])) && !A->getParent()) { | |||
5582 | A->replaceAllUsesWith(UndefValue::get(A->getType())); | |||
5583 | delete A; | |||
5584 | } | |||
5585 | } | |||
5586 | return error("Never resolved value found in function"); | |||
5587 | } | |||
5588 | } | |||
5589 | ||||
5590 | // Unexpected unresolved metadata about to be dropped. | |||
5591 | if (MDLoader->hasFwdRefs()) | |||
5592 | return error("Invalid function metadata: outgoing forward refs"); | |||
5593 | ||||
5594 | // Trim the value list down to the size it was before we parsed this function. | |||
5595 | ValueList.shrinkTo(ModuleValueListSize); | |||
5596 | MDLoader->shrinkTo(ModuleMDLoaderSize); | |||
5597 | std::vector<BasicBlock*>().swap(FunctionBBs); | |||
5598 | return Error::success(); | |||
5599 | } | |||
5600 | ||||
5601 | /// Find the function body in the bitcode stream | |||
5602 | Error BitcodeReader::findFunctionInStream( | |||
5603 | Function *F, | |||
5604 | DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator) { | |||
5605 | while (DeferredFunctionInfoIterator->second == 0) { | |||
5606 | // This is the fallback handling for the old format bitcode that | |||
5607 | // didn't contain the function index in the VST, or when we have | |||
5608 | // an anonymous function which would not have a VST entry. | |||
5609 | // Assert that we have one of those two cases. | |||
5610 | assert(VSTOffset == 0 || !F->hasName())(static_cast <bool> (VSTOffset == 0 || !F->hasName() ) ? void (0) : __assert_fail ("VSTOffset == 0 || !F->hasName()" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5610, __extension__ __PRETTY_FUNCTION__)); | |||
5611 | // Parse the next body in the stream and set its position in the | |||
5612 | // DeferredFunctionInfo map. | |||
5613 | if (Error Err = rememberAndSkipFunctionBodies()) | |||
5614 | return Err; | |||
5615 | } | |||
5616 | return Error::success(); | |||
5617 | } | |||
5618 | ||||
5619 | SyncScope::ID BitcodeReader::getDecodedSyncScopeID(unsigned Val) { | |||
5620 | if (Val == SyncScope::SingleThread || Val == SyncScope::System) | |||
5621 | return SyncScope::ID(Val); | |||
5622 | if (Val >= SSIDs.size()) | |||
5623 | return SyncScope::System; // Map unknown synchronization scopes to system. | |||
5624 | return SSIDs[Val]; | |||
5625 | } | |||
5626 | ||||
5627 | //===----------------------------------------------------------------------===// | |||
5628 | // GVMaterializer implementation | |||
5629 | //===----------------------------------------------------------------------===// | |||
5630 | ||||
5631 | Error BitcodeReader::materialize(GlobalValue *GV) { | |||
5632 | Function *F = dyn_cast<Function>(GV); | |||
5633 | // If it's not a function or is already material, ignore the request. | |||
5634 | if (!F || !F->isMaterializable()) | |||
5635 | return Error::success(); | |||
5636 | ||||
5637 | DenseMap<Function*, uint64_t>::iterator DFII = DeferredFunctionInfo.find(F); | |||
5638 | 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!\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5638, __extension__ __PRETTY_FUNCTION__)); | |||
5639 | // If its position is recorded as 0, its body is somewhere in the stream | |||
5640 | // but we haven't seen it yet. | |||
5641 | if (DFII->second == 0) | |||
5642 | if (Error Err = findFunctionInStream(F, DFII)) | |||
5643 | return Err; | |||
5644 | ||||
5645 | // Materialize metadata before parsing any function bodies. | |||
5646 | if (Error Err = materializeMetadata()) | |||
5647 | return Err; | |||
5648 | ||||
5649 | // Move the bit stream to the saved position of the deferred function body. | |||
5650 | if (Error JumpFailed = Stream.JumpToBit(DFII->second)) | |||
5651 | return JumpFailed; | |||
5652 | if (Error Err = parseFunctionBody(F)) | |||
5653 | return Err; | |||
5654 | F->setIsMaterializable(false); | |||
5655 | ||||
5656 | if (StripDebugInfo) | |||
5657 | stripDebugInfo(*F); | |||
5658 | ||||
5659 | // Upgrade any old intrinsic calls in the function. | |||
5660 | for (auto &I : UpgradedIntrinsics) { | |||
5661 | for (User *U : llvm::make_early_inc_range(I.first->materialized_users())) | |||
5662 | if (CallInst *CI = dyn_cast<CallInst>(U)) | |||
5663 | UpgradeIntrinsicCall(CI, I.second); | |||
5664 | } | |||
5665 | ||||
5666 | // Update calls to the remangled intrinsics | |||
5667 | for (auto &I : RemangledIntrinsics) | |||
5668 | for (User *U : llvm::make_early_inc_range(I.first->materialized_users())) | |||
5669 | // Don't expect any other users than call sites | |||
5670 | cast<CallBase>(U)->setCalledFunction(I.second); | |||
5671 | ||||
5672 | // Finish fn->subprogram upgrade for materialized functions. | |||
5673 | if (DISubprogram *SP = MDLoader->lookupSubprogramForFunction(F)) | |||
5674 | F->setSubprogram(SP); | |||
5675 | ||||
5676 | // Check if the TBAA Metadata are valid, otherwise we will need to strip them. | |||
5677 | if (!MDLoader->isStrippingTBAA()) { | |||
5678 | for (auto &I : instructions(F)) { | |||
5679 | MDNode *TBAA = I.getMetadata(LLVMContext::MD_tbaa); | |||
5680 | if (!TBAA || TBAAVerifyHelper.visitTBAAMetadata(I, TBAA)) | |||
5681 | continue; | |||
5682 | MDLoader->setStripTBAA(true); | |||
5683 | stripTBAA(F->getParent()); | |||
5684 | } | |||
5685 | } | |||
5686 | ||||
5687 | for (auto &I : instructions(F)) { | |||
5688 | // "Upgrade" older incorrect branch weights by dropping them. | |||
5689 | if (auto *MD = I.getMetadata(LLVMContext::MD_prof)) { | |||
5690 | if (MD->getOperand(0) != nullptr && isa<MDString>(MD->getOperand(0))) { | |||
5691 | MDString *MDS = cast<MDString>(MD->getOperand(0)); | |||
5692 | StringRef ProfName = MDS->getString(); | |||
5693 | // Check consistency of !prof branch_weights metadata. | |||
5694 | if (!ProfName.equals("branch_weights")) | |||
5695 | continue; | |||
5696 | unsigned ExpectedNumOperands = 0; | |||
5697 | if (BranchInst *BI = dyn_cast<BranchInst>(&I)) | |||
5698 | ExpectedNumOperands = BI->getNumSuccessors(); | |||
5699 | else if (SwitchInst *SI = dyn_cast<SwitchInst>(&I)) | |||
5700 | ExpectedNumOperands = SI->getNumSuccessors(); | |||
5701 | else if (isa<CallInst>(&I)) | |||
5702 | ExpectedNumOperands = 1; | |||
5703 | else if (IndirectBrInst *IBI = dyn_cast<IndirectBrInst>(&I)) | |||
5704 | ExpectedNumOperands = IBI->getNumDestinations(); | |||
5705 | else if (isa<SelectInst>(&I)) | |||
5706 | ExpectedNumOperands = 2; | |||
5707 | else | |||
5708 | continue; // ignore and continue. | |||
5709 | ||||
5710 | // If branch weight doesn't match, just strip branch weight. | |||
5711 | if (MD->getNumOperands() != 1 + ExpectedNumOperands) | |||
5712 | I.setMetadata(LLVMContext::MD_prof, nullptr); | |||
5713 | } | |||
5714 | } | |||
5715 | ||||
5716 | // Remove incompatible attributes on function calls. | |||
5717 | if (auto *CI = dyn_cast<CallBase>(&I)) { | |||
5718 | CI->removeRetAttrs(AttributeFuncs::typeIncompatible( | |||
5719 | CI->getFunctionType()->getReturnType())); | |||
5720 | ||||
5721 | for (unsigned ArgNo = 0; ArgNo < CI->arg_size(); ++ArgNo) | |||
5722 | CI->removeParamAttrs(ArgNo, AttributeFuncs::typeIncompatible( | |||
5723 | CI->getArgOperand(ArgNo)->getType())); | |||
5724 | } | |||
5725 | } | |||
5726 | ||||
5727 | // Look for functions that rely on old function attribute behavior. | |||
5728 | UpgradeFunctionAttributes(*F); | |||
5729 | ||||
5730 | // Bring in any functions that this function forward-referenced via | |||
5731 | // blockaddresses. | |||
5732 | return materializeForwardReferencedFunctions(); | |||
5733 | } | |||
5734 | ||||
5735 | Error BitcodeReader::materializeModule() { | |||
5736 | if (Error Err = materializeMetadata()) | |||
5737 | return Err; | |||
5738 | ||||
5739 | // Promise to materialize all forward references. | |||
5740 | WillMaterializeAllForwardRefs = true; | |||
5741 | ||||
5742 | // Iterate over the module, deserializing any functions that are still on | |||
5743 | // disk. | |||
5744 | for (Function &F : *TheModule) { | |||
5745 | if (Error Err = materialize(&F)) | |||
5746 | return Err; | |||
5747 | } | |||
5748 | // At this point, if there are any function bodies, parse the rest of | |||
5749 | // the bits in the module past the last function block we have recorded | |||
5750 | // through either lazy scanning or the VST. | |||
5751 | if (LastFunctionBlockBit || NextUnreadBit) | |||
5752 | if (Error Err = parseModule(LastFunctionBlockBit > NextUnreadBit | |||
5753 | ? LastFunctionBlockBit | |||
5754 | : NextUnreadBit)) | |||
5755 | return Err; | |||
5756 | ||||
5757 | // Check that all block address forward references got resolved (as we | |||
5758 | // promised above). | |||
5759 | if (!BasicBlockFwdRefs.empty()) | |||
5760 | return error("Never resolved function from blockaddress"); | |||
5761 | ||||
5762 | // Upgrade any intrinsic calls that slipped through (should not happen!) and | |||
5763 | // delete the old functions to clean up. We can't do this unless the entire | |||
5764 | // module is materialized because there could always be another function body | |||
5765 | // with calls to the old function. | |||
5766 | for (auto &I : UpgradedIntrinsics) { | |||
5767 | for (auto *U : I.first->users()) { | |||
5768 | if (CallInst *CI = dyn_cast<CallInst>(U)) | |||
5769 | UpgradeIntrinsicCall(CI, I.second); | |||
5770 | } | |||
5771 | if (!I.first->use_empty()) | |||
5772 | I.first->replaceAllUsesWith(I.second); | |||
5773 | I.first->eraseFromParent(); | |||
5774 | } | |||
5775 | UpgradedIntrinsics.clear(); | |||
5776 | // Do the same for remangled intrinsics | |||
5777 | for (auto &I : RemangledIntrinsics) { | |||
5778 | I.first->replaceAllUsesWith(I.second); | |||
5779 | I.first->eraseFromParent(); | |||
5780 | } | |||
5781 | RemangledIntrinsics.clear(); | |||
5782 | ||||
5783 | UpgradeDebugInfo(*TheModule); | |||
5784 | ||||
5785 | UpgradeModuleFlags(*TheModule); | |||
5786 | ||||
5787 | UpgradeARCRuntime(*TheModule); | |||
5788 | ||||
5789 | return Error::success(); | |||
5790 | } | |||
5791 | ||||
5792 | std::vector<StructType *> BitcodeReader::getIdentifiedStructTypes() const { | |||
5793 | return IdentifiedStructTypes; | |||
5794 | } | |||
5795 | ||||
5796 | ModuleSummaryIndexBitcodeReader::ModuleSummaryIndexBitcodeReader( | |||
5797 | BitstreamCursor Cursor, StringRef Strtab, ModuleSummaryIndex &TheIndex, | |||
5798 | StringRef ModulePath, unsigned ModuleId) | |||
5799 | : BitcodeReaderBase(std::move(Cursor), Strtab), TheIndex(TheIndex), | |||
5800 | ModulePath(ModulePath), ModuleId(ModuleId) {} | |||
5801 | ||||
5802 | void ModuleSummaryIndexBitcodeReader::addThisModule() { | |||
5803 | TheIndex.addModule(ModulePath, ModuleId); | |||
5804 | } | |||
5805 | ||||
5806 | ModuleSummaryIndex::ModuleInfo * | |||
5807 | ModuleSummaryIndexBitcodeReader::getThisModule() { | |||
5808 | return TheIndex.getModule(ModulePath); | |||
5809 | } | |||
5810 | ||||
5811 | std::pair<ValueInfo, GlobalValue::GUID> | |||
5812 | ModuleSummaryIndexBitcodeReader::getValueInfoFromValueId(unsigned ValueId) { | |||
5813 | auto VGI = ValueIdToValueInfoMap[ValueId]; | |||
5814 | assert(VGI.first)(static_cast <bool> (VGI.first) ? void (0) : __assert_fail ("VGI.first", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5814 , __extension__ __PRETTY_FUNCTION__)); | |||
5815 | return VGI; | |||
5816 | } | |||
5817 | ||||
5818 | void ModuleSummaryIndexBitcodeReader::setValueGUID( | |||
5819 | uint64_t ValueID, StringRef ValueName, GlobalValue::LinkageTypes Linkage, | |||
5820 | StringRef SourceFileName) { | |||
5821 | std::string GlobalId = | |||
5822 | GlobalValue::getGlobalIdentifier(ValueName, Linkage, SourceFileName); | |||
5823 | auto ValueGUID = GlobalValue::getGUID(GlobalId); | |||
5824 | auto OriginalNameID = ValueGUID; | |||
5825 | if (GlobalValue::isLocalLinkage(Linkage)) | |||
5826 | OriginalNameID = GlobalValue::getGUID(ValueName); | |||
5827 | if (PrintSummaryGUIDs) | |||
5828 | dbgs() << "GUID " << ValueGUID << "(" << OriginalNameID << ") is " | |||
5829 | << ValueName << "\n"; | |||
5830 | ||||
5831 | // UseStrtab is false for legacy summary formats and value names are | |||
5832 | // created on stack. In that case we save the name in a string saver in | |||
5833 | // the index so that the value name can be recorded. | |||
5834 | ValueIdToValueInfoMap[ValueID] = std::make_pair( | |||
5835 | TheIndex.getOrInsertValueInfo( | |||
5836 | ValueGUID, | |||
5837 | UseStrtab ? ValueName : TheIndex.saveString(ValueName)), | |||
5838 | OriginalNameID); | |||
5839 | } | |||
5840 | ||||
5841 | // Specialized value symbol table parser used when reading module index | |||
5842 | // blocks where we don't actually create global values. The parsed information | |||
5843 | // is saved in the bitcode reader for use when later parsing summaries. | |||
5844 | Error ModuleSummaryIndexBitcodeReader::parseValueSymbolTable( | |||
5845 | uint64_t Offset, | |||
5846 | DenseMap<unsigned, GlobalValue::LinkageTypes> &ValueIdToLinkageMap) { | |||
5847 | // With a strtab the VST is not required to parse the summary. | |||
5848 | if (UseStrtab) | |||
5849 | return Error::success(); | |||
5850 | ||||
5851 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5851, __extension__ __PRETTY_FUNCTION__)); | |||
5852 | Expected<uint64_t> MaybeCurrentBit = jumpToValueSymbolTable(Offset, Stream); | |||
5853 | if (!MaybeCurrentBit) | |||
5854 | return MaybeCurrentBit.takeError(); | |||
5855 | uint64_t CurrentBit = MaybeCurrentBit.get(); | |||
5856 | ||||
5857 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) | |||
5858 | return Err; | |||
5859 | ||||
5860 | SmallVector<uint64_t, 64> Record; | |||
5861 | ||||
5862 | // Read all the records for this value table. | |||
5863 | SmallString<128> ValueName; | |||
5864 | ||||
5865 | while (true) { | |||
5866 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
5867 | if (!MaybeEntry) | |||
5868 | return MaybeEntry.takeError(); | |||
5869 | BitstreamEntry Entry = MaybeEntry.get(); | |||
5870 | ||||
5871 | switch (Entry.Kind) { | |||
5872 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
5873 | case BitstreamEntry::Error: | |||
5874 | return error("Malformed block"); | |||
5875 | case BitstreamEntry::EndBlock: | |||
5876 | // Done parsing VST, jump back to wherever we came from. | |||
5877 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) | |||
5878 | return JumpFailed; | |||
5879 | return Error::success(); | |||
5880 | case BitstreamEntry::Record: | |||
5881 | // The interesting case. | |||
5882 | break; | |||
5883 | } | |||
5884 | ||||
5885 | // Read a record. | |||
5886 | Record.clear(); | |||
5887 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
5888 | if (!MaybeRecord) | |||
5889 | return MaybeRecord.takeError(); | |||
5890 | switch (MaybeRecord.get()) { | |||
5891 | default: // Default behavior: ignore (e.g. VST_CODE_BBENTRY records). | |||
5892 | break; | |||
5893 | case bitc::VST_CODE_ENTRY: { // VST_CODE_ENTRY: [valueid, namechar x N] | |||
5894 | if (convertToString(Record, 1, ValueName)) | |||
5895 | return error("Invalid record"); | |||
5896 | unsigned ValueID = Record[0]; | |||
5897 | assert(!SourceFileName.empty())(static_cast <bool> (!SourceFileName.empty()) ? void (0 ) : __assert_fail ("!SourceFileName.empty()", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5897, __extension__ __PRETTY_FUNCTION__)); | |||
5898 | auto VLI = ValueIdToLinkageMap.find(ValueID); | |||
5899 | 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?\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5900, __extension__ __PRETTY_FUNCTION__)) | |||
5900 | "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?\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5900, __extension__ __PRETTY_FUNCTION__)); | |||
5901 | auto Linkage = VLI->second; | |||
5902 | setValueGUID(ValueID, ValueName, Linkage, SourceFileName); | |||
5903 | ValueName.clear(); | |||
5904 | break; | |||
5905 | } | |||
5906 | case bitc::VST_CODE_FNENTRY: { | |||
5907 | // VST_CODE_FNENTRY: [valueid, offset, namechar x N] | |||
5908 | if (convertToString(Record, 2, ValueName)) | |||
5909 | return error("Invalid record"); | |||
5910 | unsigned ValueID = Record[0]; | |||
5911 | assert(!SourceFileName.empty())(static_cast <bool> (!SourceFileName.empty()) ? void (0 ) : __assert_fail ("!SourceFileName.empty()", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5911, __extension__ __PRETTY_FUNCTION__)); | |||
5912 | auto VLI = ValueIdToLinkageMap.find(ValueID); | |||
5913 | 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?\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5914, __extension__ __PRETTY_FUNCTION__)) | |||
5914 | "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?\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5914, __extension__ __PRETTY_FUNCTION__)); | |||
5915 | auto Linkage = VLI->second; | |||
5916 | setValueGUID(ValueID, ValueName, Linkage, SourceFileName); | |||
5917 | ValueName.clear(); | |||
5918 | break; | |||
5919 | } | |||
5920 | case bitc::VST_CODE_COMBINED_ENTRY: { | |||
5921 | // VST_CODE_COMBINED_ENTRY: [valueid, refguid] | |||
5922 | unsigned ValueID = Record[0]; | |||
5923 | GlobalValue::GUID RefGUID = Record[1]; | |||
5924 | // The "original name", which is the second value of the pair will be | |||
5925 | // overriden later by a FS_COMBINED_ORIGINAL_NAME in the combined index. | |||
5926 | ValueIdToValueInfoMap[ValueID] = | |||
5927 | std::make_pair(TheIndex.getOrInsertValueInfo(RefGUID), RefGUID); | |||
5928 | break; | |||
5929 | } | |||
5930 | } | |||
5931 | } | |||
5932 | } | |||
5933 | ||||
5934 | // Parse just the blocks needed for building the index out of the module. | |||
5935 | // At the end of this routine the module Index is populated with a map | |||
5936 | // from global value id to GlobalValueSummary objects. | |||
5937 | Error ModuleSummaryIndexBitcodeReader::parseModule() { | |||
5938 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | |||
5939 | return Err; | |||
5940 | ||||
5941 | SmallVector<uint64_t, 64> Record; | |||
5942 | DenseMap<unsigned, GlobalValue::LinkageTypes> ValueIdToLinkageMap; | |||
5943 | unsigned ValueId = 0; | |||
5944 | ||||
5945 | // Read the index for this module. | |||
5946 | while (true) { | |||
5947 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | |||
5948 | if (!MaybeEntry) | |||
5949 | return MaybeEntry.takeError(); | |||
5950 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | |||
5951 | ||||
5952 | switch (Entry.Kind) { | |||
5953 | case BitstreamEntry::Error: | |||
5954 | return error("Malformed block"); | |||
5955 | case BitstreamEntry::EndBlock: | |||
5956 | return Error::success(); | |||
5957 | ||||
5958 | case BitstreamEntry::SubBlock: | |||
5959 | switch (Entry.ID) { | |||
5960 | default: // Skip unknown content. | |||
5961 | if (Error Err = Stream.SkipBlock()) | |||
5962 | return Err; | |||
5963 | break; | |||
5964 | case bitc::BLOCKINFO_BLOCK_ID: | |||
5965 | // Need to parse these to get abbrev ids (e.g. for VST) | |||
5966 | if (Error Err = readBlockInfo()) | |||
5967 | return Err; | |||
5968 | break; | |||
5969 | case bitc::VALUE_SYMTAB_BLOCK_ID: | |||
5970 | // Should have been parsed earlier via VSTOffset, unless there | |||
5971 | // is no summary section. | |||
5972 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5974, __extension__ __PRETTY_FUNCTION__)) | |||
5973 | !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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5974, __extension__ __PRETTY_FUNCTION__)) | |||
5974 | "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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5974, __extension__ __PRETTY_FUNCTION__)); | |||
5975 | if (Error Err = Stream.SkipBlock()) | |||
5976 | return Err; | |||
5977 | break; | |||
5978 | case bitc::GLOBALVAL_SUMMARY_BLOCK_ID: | |||
5979 | case bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID: | |||
5980 | // Add the module if it is a per-module index (has a source file name). | |||
5981 | if (!SourceFileName.empty()) | |||
5982 | addThisModule(); | |||
5983 | 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?\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5984, __extension__ __PRETTY_FUNCTION__)) | |||
5984 | "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?\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 5984, __extension__ __PRETTY_FUNCTION__)); | |||
5985 | // We might not have a VST if there were no values in the | |||
5986 | // summary. An empty summary block generated when we are | |||
5987 | // performing ThinLTO compiles so we don't later invoke | |||
5988 | // the regular LTO process on them. | |||
5989 | if (VSTOffset > 0) { | |||
5990 | if (Error Err = parseValueSymbolTable(VSTOffset, ValueIdToLinkageMap)) | |||
5991 | return Err; | |||
5992 | SeenValueSymbolTable = true; | |||
5993 | } | |||
5994 | SeenGlobalValSummary = true; | |||
5995 | if (Error Err = parseEntireSummary(Entry.ID)) | |||
5996 | return Err; | |||
5997 | break; | |||
5998 | case bitc::MODULE_STRTAB_BLOCK_ID: | |||
5999 | if (Error Err = parseModuleStringTable()) | |||
6000 | return Err; | |||
6001 | break; | |||
6002 | } | |||
6003 | continue; | |||
6004 | ||||
6005 | case BitstreamEntry::Record: { | |||
6006 | Record.clear(); | |||
6007 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | |||
6008 | if (!MaybeBitCode) | |||
6009 | return MaybeBitCode.takeError(); | |||
6010 | switch (MaybeBitCode.get()) { | |||
6011 | default: | |||
6012 | break; // Default behavior, ignore unknown content. | |||
6013 | case bitc::MODULE_CODE_VERSION: { | |||
6014 | if (Error Err = parseVersionRecord(Record).takeError()) | |||
6015 | return Err; | |||
6016 | break; | |||
6017 | } | |||
6018 | /// MODULE_CODE_SOURCE_FILENAME: [namechar x N] | |||
6019 | case bitc::MODULE_CODE_SOURCE_FILENAME: { | |||
6020 | SmallString<128> ValueName; | |||
6021 | if (convertToString(Record, 0, ValueName)) | |||
6022 | return error("Invalid record"); | |||
6023 | SourceFileName = ValueName.c_str(); | |||
6024 | break; | |||
6025 | } | |||
6026 | /// MODULE_CODE_HASH: [5*i32] | |||
6027 | case bitc::MODULE_CODE_HASH: { | |||
6028 | if (Record.size() != 5) | |||
6029 | return error("Invalid hash length " + Twine(Record.size()).str()); | |||
6030 | auto &Hash = getThisModule()->second.second; | |||
6031 | int Pos = 0; | |||
6032 | for (auto &Val : Record) { | |||
6033 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6033, __extension__ __PRETTY_FUNCTION__)); | |||
6034 | Hash[Pos++] = Val; | |||
6035 | } | |||
6036 | break; | |||
6037 | } | |||
6038 | /// MODULE_CODE_VSTOFFSET: [offset] | |||
6039 | case bitc::MODULE_CODE_VSTOFFSET: | |||
6040 | if (Record.empty()) | |||
6041 | return error("Invalid record"); | |||
6042 | // Note that we subtract 1 here because the offset is relative to one | |||
6043 | // word before the start of the identification or module block, which | |||
6044 | // was historically always the start of the regular bitcode header. | |||
6045 | VSTOffset = Record[0] - 1; | |||
6046 | break; | |||
6047 | // v1 GLOBALVAR: [pointer type, isconst, initid, linkage, ...] | |||
6048 | // v1 FUNCTION: [type, callingconv, isproto, linkage, ...] | |||
6049 | // v1 ALIAS: [alias type, addrspace, aliasee val#, linkage, ...] | |||
6050 | // v2: [strtab offset, strtab size, v1] | |||
6051 | case bitc::MODULE_CODE_GLOBALVAR: | |||
6052 | case bitc::MODULE_CODE_FUNCTION: | |||
6053 | case bitc::MODULE_CODE_ALIAS: { | |||
6054 | StringRef Name; | |||
6055 | ArrayRef<uint64_t> GVRecord; | |||
6056 | std::tie(Name, GVRecord) = readNameFromStrtab(Record); | |||
6057 | if (GVRecord.size() <= 3) | |||
6058 | return error("Invalid record"); | |||
6059 | uint64_t RawLinkage = GVRecord[3]; | |||
6060 | GlobalValue::LinkageTypes Linkage = getDecodedLinkage(RawLinkage); | |||
6061 | if (!UseStrtab) { | |||
6062 | ValueIdToLinkageMap[ValueId++] = Linkage; | |||
6063 | break; | |||
6064 | } | |||
6065 | ||||
6066 | setValueGUID(ValueId++, Name, Linkage, SourceFileName); | |||
6067 | break; | |||
6068 | } | |||
6069 | } | |||
6070 | } | |||
6071 | continue; | |||
6072 | } | |||
6073 | } | |||
6074 | } | |||
6075 | ||||
6076 | std::vector<ValueInfo> | |||
6077 | ModuleSummaryIndexBitcodeReader::makeRefList(ArrayRef<uint64_t> Record) { | |||
6078 | std::vector<ValueInfo> Ret; | |||
6079 | Ret.reserve(Record.size()); | |||
6080 | for (uint64_t RefValueId : Record) | |||
6081 | Ret.push_back(getValueInfoFromValueId(RefValueId).first); | |||
6082 | return Ret; | |||
6083 | } | |||
6084 | ||||
6085 | std::vector<FunctionSummary::EdgeTy> | |||
6086 | ModuleSummaryIndexBitcodeReader::makeCallList(ArrayRef<uint64_t> Record, | |||
6087 | bool IsOldProfileFormat, | |||
6088 | bool HasProfile, bool HasRelBF) { | |||
6089 | std::vector<FunctionSummary::EdgeTy> Ret; | |||
6090 | Ret.reserve(Record.size()); | |||
6091 | for (unsigned I = 0, E = Record.size(); I != E; ++I) { | |||
6092 | CalleeInfo::HotnessType Hotness = CalleeInfo::HotnessType::Unknown; | |||
6093 | uint64_t RelBF = 0; | |||
6094 | ValueInfo Callee = getValueInfoFromValueId(Record[I]).first; | |||
6095 | if (IsOldProfileFormat) { | |||
6096 | I += 1; // Skip old callsitecount field | |||
6097 | if (HasProfile) | |||
6098 | I += 1; // Skip old profilecount field | |||
6099 | } else if (HasProfile) | |||
6100 | Hotness = static_cast<CalleeInfo::HotnessType>(Record[++I]); | |||
6101 | else if (HasRelBF) | |||
6102 | RelBF = Record[++I]; | |||
6103 | Ret.push_back(FunctionSummary::EdgeTy{Callee, CalleeInfo(Hotness, RelBF)}); | |||
6104 | } | |||
6105 | return Ret; | |||
6106 | } | |||
6107 | ||||
6108 | static void | |||
6109 | parseWholeProgramDevirtResolutionByArg(ArrayRef<uint64_t> Record, size_t &Slot, | |||
6110 | WholeProgramDevirtResolution &Wpd) { | |||
6111 | uint64_t ArgNum = Record[Slot++]; | |||
6112 | WholeProgramDevirtResolution::ByArg &B = | |||
6113 | Wpd.ResByArg[{Record.begin() + Slot, Record.begin() + Slot + ArgNum}]; | |||
6114 | Slot += ArgNum; | |||
6115 | ||||
6116 | B.TheKind = | |||
6117 | static_cast<WholeProgramDevirtResolution::ByArg::Kind>(Record[Slot++]); | |||
6118 | B.Info = Record[Slot++]; | |||
6119 | B.Byte = Record[Slot++]; | |||
6120 | B.Bit = Record[Slot++]; | |||
6121 | } | |||
6122 | ||||
6123 | static void parseWholeProgramDevirtResolution(ArrayRef<uint64_t> Record, | |||
6124 | StringRef Strtab, size_t &Slot, | |||
6125 | TypeIdSummary &TypeId) { | |||
6126 | uint64_t Id = Record[Slot++]; | |||
6127 | WholeProgramDevirtResolution &Wpd = TypeId.WPDRes[Id]; | |||
6128 | ||||
6129 | Wpd.TheKind = static_cast<WholeProgramDevirtResolution::Kind>(Record[Slot++]); | |||
6130 | Wpd.SingleImplName = {Strtab.data() + Record[Slot], | |||
6131 | static_cast<size_t>(Record[Slot + 1])}; | |||
6132 | Slot += 2; | |||
6133 | ||||
6134 | uint64_t ResByArgNum = Record[Slot++]; | |||
6135 | for (uint64_t I = 0; I != ResByArgNum; ++I) | |||
6136 | parseWholeProgramDevirtResolutionByArg(Record, Slot, Wpd); | |||
6137 | } | |||
6138 | ||||
6139 | static void parseTypeIdSummaryRecord(ArrayRef<uint64_t> Record, | |||
6140 | StringRef Strtab, | |||
6141 | ModuleSummaryIndex &TheIndex) { | |||
6142 | size_t Slot = 0; | |||
6143 | TypeIdSummary &TypeId = TheIndex.getOrInsertTypeIdSummary( | |||
6144 | {Strtab.data() + Record[Slot], static_cast<size_t>(Record[Slot + 1])}); | |||
6145 | Slot += 2; | |||
6146 | ||||
6147 | TypeId.TTRes.TheKind = static_cast<TypeTestResolution::Kind>(Record[Slot++]); | |||
6148 | TypeId.TTRes.SizeM1BitWidth = Record[Slot++]; | |||
6149 | TypeId.TTRes.AlignLog2 = Record[Slot++]; | |||
6150 | TypeId.TTRes.SizeM1 = Record[Slot++]; | |||
6151 | TypeId.TTRes.BitMask = Record[Slot++]; | |||
6152 | TypeId.TTRes.InlineBits = Record[Slot++]; | |||
6153 | ||||
6154 | while (Slot < Record.size()) | |||
6155 | parseWholeProgramDevirtResolution(Record, Strtab, Slot, TypeId); | |||
6156 | } | |||
6157 | ||||
6158 | std::vector<FunctionSummary::ParamAccess> | |||
6159 | ModuleSummaryIndexBitcodeReader::parseParamAccesses(ArrayRef<uint64_t> Record) { | |||
6160 | auto ReadRange = [&]() { | |||
6161 | APInt Lower(FunctionSummary::ParamAccess::RangeWidth, | |||
6162 | BitcodeReader::decodeSignRotatedValue(Record.front())); | |||
6163 | Record = Record.drop_front(); | |||
6164 | APInt Upper(FunctionSummary::ParamAccess::RangeWidth, | |||
6165 | BitcodeReader::decodeSignRotatedValue(Record.front())); | |||
6166 | Record = Record.drop_front(); | |||
6167 | ConstantRange Range{Lower, Upper}; | |||
6168 | assert(!Range.isFullSet())(static_cast <bool> (!Range.isFullSet()) ? void (0) : __assert_fail ("!Range.isFullSet()", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6168, __extension__ __PRETTY_FUNCTION__)); | |||
6169 | assert(!Range.isUpperSignWrapped())(static_cast <bool> (!Range.isUpperSignWrapped()) ? void (0) : __assert_fail ("!Range.isUpperSignWrapped()", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6169, __extension__ __PRETTY_FUNCTION__)); | |||
6170 | return Range; | |||
6171 | }; | |||
6172 | ||||
6173 | std::vector<FunctionSummary::ParamAccess> PendingParamAccesses; | |||
6174 | while (!Record.empty()) { | |||
6175 | PendingParamAccesses.emplace_back(); | |||
6176 | FunctionSummary::ParamAccess &ParamAccess = PendingParamAccesses.back(); | |||
6177 | ParamAccess.ParamNo = Record.front(); | |||
6178 | Record = Record.drop_front(); | |||
6179 | ParamAccess.Use = ReadRange(); | |||
6180 | ParamAccess.Calls.resize(Record.front()); | |||
6181 | Record = Record.drop_front(); | |||
6182 | for (auto &Call : ParamAccess.Calls) { | |||
6183 | Call.ParamNo = Record.front(); | |||
6184 | Record = Record.drop_front(); | |||
6185 | Call.Callee = getValueInfoFromValueId(Record.front()).first; | |||
6186 | Record = Record.drop_front(); | |||
6187 | Call.Offsets = ReadRange(); | |||
6188 | } | |||
6189 | } | |||
6190 | return PendingParamAccesses; | |||
6191 | } | |||
6192 | ||||
6193 | void ModuleSummaryIndexBitcodeReader::parseTypeIdCompatibleVtableInfo( | |||
6194 | ArrayRef<uint64_t> Record, size_t &Slot, | |||
6195 | TypeIdCompatibleVtableInfo &TypeId) { | |||
6196 | uint64_t Offset = Record[Slot++]; | |||
6197 | ValueInfo Callee = getValueInfoFromValueId(Record[Slot++]).first; | |||
6198 | TypeId.push_back({Offset, Callee}); | |||
6199 | } | |||
6200 | ||||
6201 | void ModuleSummaryIndexBitcodeReader::parseTypeIdCompatibleVtableSummaryRecord( | |||
6202 | ArrayRef<uint64_t> Record) { | |||
6203 | size_t Slot = 0; | |||
6204 | TypeIdCompatibleVtableInfo &TypeId = | |||
6205 | TheIndex.getOrInsertTypeIdCompatibleVtableSummary( | |||
6206 | {Strtab.data() + Record[Slot], | |||
6207 | static_cast<size_t>(Record[Slot + 1])}); | |||
6208 | Slot += 2; | |||
6209 | ||||
6210 | while (Slot < Record.size()) | |||
6211 | parseTypeIdCompatibleVtableInfo(Record, Slot, TypeId); | |||
6212 | } | |||
6213 | ||||
6214 | static void setSpecialRefs(std::vector<ValueInfo> &Refs, unsigned ROCnt, | |||
6215 | unsigned WOCnt) { | |||
6216 | // Readonly and writeonly refs are in the end of the refs list. | |||
6217 | assert(ROCnt + WOCnt <= Refs.size())(static_cast <bool> (ROCnt + WOCnt <= Refs.size()) ? void (0) : __assert_fail ("ROCnt + WOCnt <= Refs.size()", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6217, __extension__ __PRETTY_FUNCTION__)); | |||
6218 | unsigned FirstWORef = Refs.size() - WOCnt; | |||
6219 | unsigned RefNo = FirstWORef - ROCnt; | |||
6220 | for (; RefNo < FirstWORef; ++RefNo) | |||
6221 | Refs[RefNo].setReadOnly(); | |||
6222 | for (; RefNo < Refs.size(); ++RefNo) | |||
6223 | Refs[RefNo].setWriteOnly(); | |||
6224 | } | |||
6225 | ||||
6226 | // Eagerly parse the entire summary block. This populates the GlobalValueSummary | |||
6227 | // objects in the index. | |||
6228 | Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) { | |||
6229 | if (Error Err = Stream.EnterSubBlock(ID)) | |||
6230 | return Err; | |||
6231 | SmallVector<uint64_t, 64> Record; | |||
6232 | ||||
6233 | // Parse version | |||
6234 | { | |||
6235 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
6236 | if (!MaybeEntry) | |||
6237 | return MaybeEntry.takeError(); | |||
6238 | BitstreamEntry Entry = MaybeEntry.get(); | |||
6239 | ||||
6240 | if (Entry.Kind != BitstreamEntry::Record) | |||
6241 | return error("Invalid Summary Block: record for version expected"); | |||
6242 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
6243 | if (!MaybeRecord) | |||
6244 | return MaybeRecord.takeError(); | |||
6245 | if (MaybeRecord.get() != bitc::FS_VERSION) | |||
6246 | return error("Invalid Summary Block: version expected"); | |||
6247 | } | |||
6248 | const uint64_t Version = Record[0]; | |||
6249 | const bool IsOldProfileFormat = Version == 1; | |||
6250 | if (Version < 1 || Version > ModuleSummaryIndex::BitcodeSummaryVersion) | |||
6251 | return error("Invalid summary version " + Twine(Version) + | |||
6252 | ". Version should be in the range [1-" + | |||
6253 | Twine(ModuleSummaryIndex::BitcodeSummaryVersion) + | |||
6254 | "]."); | |||
6255 | Record.clear(); | |||
6256 | ||||
6257 | // Keep around the last seen summary to be used when we see an optional | |||
6258 | // "OriginalName" attachement. | |||
6259 | GlobalValueSummary *LastSeenSummary = nullptr; | |||
6260 | GlobalValue::GUID LastSeenGUID = 0; | |||
6261 | ||||
6262 | // We can expect to see any number of type ID information records before | |||
6263 | // each function summary records; these variables store the information | |||
6264 | // collected so far so that it can be used to create the summary object. | |||
6265 | std::vector<GlobalValue::GUID> PendingTypeTests; | |||
6266 | std::vector<FunctionSummary::VFuncId> PendingTypeTestAssumeVCalls, | |||
6267 | PendingTypeCheckedLoadVCalls; | |||
6268 | std::vector<FunctionSummary::ConstVCall> PendingTypeTestAssumeConstVCalls, | |||
6269 | PendingTypeCheckedLoadConstVCalls; | |||
6270 | std::vector<FunctionSummary::ParamAccess> PendingParamAccesses; | |||
6271 | ||||
6272 | while (true) { | |||
6273 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
6274 | if (!MaybeEntry) | |||
6275 | return MaybeEntry.takeError(); | |||
6276 | BitstreamEntry Entry = MaybeEntry.get(); | |||
6277 | ||||
6278 | switch (Entry.Kind) { | |||
6279 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
6280 | case BitstreamEntry::Error: | |||
6281 | return error("Malformed block"); | |||
6282 | case BitstreamEntry::EndBlock: | |||
6283 | return Error::success(); | |||
6284 | case BitstreamEntry::Record: | |||
6285 | // The interesting case. | |||
6286 | break; | |||
6287 | } | |||
6288 | ||||
6289 | // Read a record. The record format depends on whether this | |||
6290 | // is a per-module index or a combined index file. In the per-module | |||
6291 | // case the records contain the associated value's ID for correlation | |||
6292 | // with VST entries. In the combined index the correlation is done | |||
6293 | // via the bitcode offset of the summary records (which were saved | |||
6294 | // in the combined index VST entries). The records also contain | |||
6295 | // information used for ThinLTO renaming and importing. | |||
6296 | Record.clear(); | |||
6297 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | |||
6298 | if (!MaybeBitCode) | |||
6299 | return MaybeBitCode.takeError(); | |||
6300 | switch (unsigned BitCode = MaybeBitCode.get()) { | |||
6301 | default: // Default behavior: ignore. | |||
6302 | break; | |||
6303 | case bitc::FS_FLAGS: { // [flags] | |||
6304 | TheIndex.setFlags(Record[0]); | |||
6305 | break; | |||
6306 | } | |||
6307 | case bitc::FS_VALUE_GUID: { // [valueid, refguid] | |||
6308 | uint64_t ValueID = Record[0]; | |||
6309 | GlobalValue::GUID RefGUID = Record[1]; | |||
6310 | ValueIdToValueInfoMap[ValueID] = | |||
6311 | std::make_pair(TheIndex.getOrInsertValueInfo(RefGUID), RefGUID); | |||
6312 | break; | |||
6313 | } | |||
6314 | // FS_PERMODULE: [valueid, flags, instcount, fflags, numrefs, | |||
6315 | // numrefs x valueid, n x (valueid)] | |||
6316 | // FS_PERMODULE_PROFILE: [valueid, flags, instcount, fflags, numrefs, | |||
6317 | // numrefs x valueid, | |||
6318 | // n x (valueid, hotness)] | |||
6319 | // FS_PERMODULE_RELBF: [valueid, flags, instcount, fflags, numrefs, | |||
6320 | // numrefs x valueid, | |||
6321 | // n x (valueid, relblockfreq)] | |||
6322 | case bitc::FS_PERMODULE: | |||
6323 | case bitc::FS_PERMODULE_RELBF: | |||
6324 | case bitc::FS_PERMODULE_PROFILE: { | |||
6325 | unsigned ValueID = Record[0]; | |||
6326 | uint64_t RawFlags = Record[1]; | |||
6327 | unsigned InstCount = Record[2]; | |||
6328 | uint64_t RawFunFlags = 0; | |||
6329 | unsigned NumRefs = Record[3]; | |||
6330 | unsigned NumRORefs = 0, NumWORefs = 0; | |||
6331 | int RefListStartIndex = 4; | |||
6332 | if (Version >= 4) { | |||
6333 | RawFunFlags = Record[3]; | |||
6334 | NumRefs = Record[4]; | |||
6335 | RefListStartIndex = 5; | |||
6336 | if (Version >= 5) { | |||
6337 | NumRORefs = Record[5]; | |||
6338 | RefListStartIndex = 6; | |||
6339 | if (Version >= 7) { | |||
6340 | NumWORefs = Record[6]; | |||
6341 | RefListStartIndex = 7; | |||
6342 | } | |||
6343 | } | |||
6344 | } | |||
6345 | ||||
6346 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | |||
6347 | // The module path string ref set in the summary must be owned by the | |||
6348 | // index's module string table. Since we don't have a module path | |||
6349 | // string table section in the per-module index, we create a single | |||
6350 | // module path string table entry with an empty (0) ID to take | |||
6351 | // ownership. | |||
6352 | int CallGraphEdgeStartIndex = RefListStartIndex + NumRefs; | |||
6353 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6354, __extension__ __PRETTY_FUNCTION__)) | |||
6354 | "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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6354, __extension__ __PRETTY_FUNCTION__)); | |||
6355 | std::vector<ValueInfo> Refs = makeRefList( | |||
6356 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); | |||
6357 | bool HasProfile = (BitCode == bitc::FS_PERMODULE_PROFILE); | |||
6358 | bool HasRelBF = (BitCode == bitc::FS_PERMODULE_RELBF); | |||
6359 | std::vector<FunctionSummary::EdgeTy> Calls = makeCallList( | |||
6360 | ArrayRef<uint64_t>(Record).slice(CallGraphEdgeStartIndex), | |||
6361 | IsOldProfileFormat, HasProfile, HasRelBF); | |||
6362 | setSpecialRefs(Refs, NumRORefs, NumWORefs); | |||
6363 | auto FS = std::make_unique<FunctionSummary>( | |||
6364 | Flags, InstCount, getDecodedFFlags(RawFunFlags), /*EntryCount=*/0, | |||
6365 | std::move(Refs), std::move(Calls), std::move(PendingTypeTests), | |||
6366 | std::move(PendingTypeTestAssumeVCalls), | |||
6367 | std::move(PendingTypeCheckedLoadVCalls), | |||
6368 | std::move(PendingTypeTestAssumeConstVCalls), | |||
6369 | std::move(PendingTypeCheckedLoadConstVCalls), | |||
6370 | std::move(PendingParamAccesses)); | |||
6371 | auto VIAndOriginalGUID = getValueInfoFromValueId(ValueID); | |||
6372 | FS->setModulePath(getThisModule()->first()); | |||
6373 | FS->setOriginalName(VIAndOriginalGUID.second); | |||
6374 | TheIndex.addGlobalValueSummary(VIAndOriginalGUID.first, std::move(FS)); | |||
6375 | break; | |||
6376 | } | |||
6377 | // FS_ALIAS: [valueid, flags, valueid] | |||
6378 | // Aliases must be emitted (and parsed) after all FS_PERMODULE entries, as | |||
6379 | // they expect all aliasee summaries to be available. | |||
6380 | case bitc::FS_ALIAS: { | |||
6381 | unsigned ValueID = Record[0]; | |||
6382 | uint64_t RawFlags = Record[1]; | |||
6383 | unsigned AliaseeID = Record[2]; | |||
6384 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | |||
6385 | auto AS = std::make_unique<AliasSummary>(Flags); | |||
6386 | // The module path string ref set in the summary must be owned by the | |||
6387 | // index's module string table. Since we don't have a module path | |||
6388 | // string table section in the per-module index, we create a single | |||
6389 | // module path string table entry with an empty (0) ID to take | |||
6390 | // ownership. | |||
6391 | AS->setModulePath(getThisModule()->first()); | |||
6392 | ||||
6393 | auto AliaseeVI = getValueInfoFromValueId(AliaseeID).first; | |||
6394 | auto AliaseeInModule = TheIndex.findSummaryInModule(AliaseeVI, ModulePath); | |||
6395 | if (!AliaseeInModule) | |||
6396 | return error("Alias expects aliasee summary to be parsed"); | |||
6397 | AS->setAliasee(AliaseeVI, AliaseeInModule); | |||
6398 | ||||
6399 | auto GUID = getValueInfoFromValueId(ValueID); | |||
6400 | AS->setOriginalName(GUID.second); | |||
6401 | TheIndex.addGlobalValueSummary(GUID.first, std::move(AS)); | |||
6402 | break; | |||
6403 | } | |||
6404 | // FS_PERMODULE_GLOBALVAR_INIT_REFS: [valueid, flags, varflags, n x valueid] | |||
6405 | case bitc::FS_PERMODULE_GLOBALVAR_INIT_REFS: { | |||
6406 | unsigned ValueID = Record[0]; | |||
6407 | uint64_t RawFlags = Record[1]; | |||
6408 | unsigned RefArrayStart = 2; | |||
6409 | GlobalVarSummary::GVarFlags GVF(/* ReadOnly */ false, | |||
6410 | /* WriteOnly */ false, | |||
6411 | /* Constant */ false, | |||
6412 | GlobalObject::VCallVisibilityPublic); | |||
6413 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | |||
6414 | if (Version >= 5) { | |||
6415 | GVF = getDecodedGVarFlags(Record[2]); | |||
6416 | RefArrayStart = 3; | |||
6417 | } | |||
6418 | std::vector<ValueInfo> Refs = | |||
6419 | makeRefList(ArrayRef<uint64_t>(Record).slice(RefArrayStart)); | |||
6420 | auto FS = | |||
6421 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); | |||
6422 | FS->setModulePath(getThisModule()->first()); | |||
6423 | auto GUID = getValueInfoFromValueId(ValueID); | |||
6424 | FS->setOriginalName(GUID.second); | |||
6425 | TheIndex.addGlobalValueSummary(GUID.first, std::move(FS)); | |||
6426 | break; | |||
6427 | } | |||
6428 | // FS_PERMODULE_VTABLE_GLOBALVAR_INIT_REFS: [valueid, flags, varflags, | |||
6429 | // numrefs, numrefs x valueid, | |||
6430 | // n x (valueid, offset)] | |||
6431 | case bitc::FS_PERMODULE_VTABLE_GLOBALVAR_INIT_REFS: { | |||
6432 | unsigned ValueID = Record[0]; | |||
6433 | uint64_t RawFlags = Record[1]; | |||
6434 | GlobalVarSummary::GVarFlags GVF = getDecodedGVarFlags(Record[2]); | |||
6435 | unsigned NumRefs = Record[3]; | |||
6436 | unsigned RefListStartIndex = 4; | |||
6437 | unsigned VTableListStartIndex = RefListStartIndex + NumRefs; | |||
6438 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | |||
6439 | std::vector<ValueInfo> Refs = makeRefList( | |||
6440 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); | |||
6441 | VTableFuncList VTableFuncs; | |||
6442 | for (unsigned I = VTableListStartIndex, E = Record.size(); I != E; ++I) { | |||
6443 | ValueInfo Callee = getValueInfoFromValueId(Record[I]).first; | |||
6444 | uint64_t Offset = Record[++I]; | |||
6445 | VTableFuncs.push_back({Callee, Offset}); | |||
6446 | } | |||
6447 | auto VS = | |||
6448 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); | |||
6449 | VS->setModulePath(getThisModule()->first()); | |||
6450 | VS->setVTableFuncs(VTableFuncs); | |||
6451 | auto GUID = getValueInfoFromValueId(ValueID); | |||
6452 | VS->setOriginalName(GUID.second); | |||
6453 | TheIndex.addGlobalValueSummary(GUID.first, std::move(VS)); | |||
6454 | break; | |||
6455 | } | |||
6456 | // FS_COMBINED: [valueid, modid, flags, instcount, fflags, numrefs, | |||
6457 | // numrefs x valueid, n x (valueid)] | |||
6458 | // FS_COMBINED_PROFILE: [valueid, modid, flags, instcount, fflags, numrefs, | |||
6459 | // numrefs x valueid, n x (valueid, hotness)] | |||
6460 | case bitc::FS_COMBINED: | |||
6461 | case bitc::FS_COMBINED_PROFILE: { | |||
6462 | unsigned ValueID = Record[0]; | |||
6463 | uint64_t ModuleId = Record[1]; | |||
6464 | uint64_t RawFlags = Record[2]; | |||
6465 | unsigned InstCount = Record[3]; | |||
6466 | uint64_t RawFunFlags = 0; | |||
6467 | uint64_t EntryCount = 0; | |||
6468 | unsigned NumRefs = Record[4]; | |||
6469 | unsigned NumRORefs = 0, NumWORefs = 0; | |||
6470 | int RefListStartIndex = 5; | |||
6471 | ||||
6472 | if (Version >= 4) { | |||
6473 | RawFunFlags = Record[4]; | |||
6474 | RefListStartIndex = 6; | |||
6475 | size_t NumRefsIndex = 5; | |||
6476 | if (Version >= 5) { | |||
6477 | unsigned NumRORefsOffset = 1; | |||
6478 | RefListStartIndex = 7; | |||
6479 | if (Version >= 6) { | |||
6480 | NumRefsIndex = 6; | |||
6481 | EntryCount = Record[5]; | |||
6482 | RefListStartIndex = 8; | |||
6483 | if (Version >= 7) { | |||
6484 | RefListStartIndex = 9; | |||
6485 | NumWORefs = Record[8]; | |||
6486 | NumRORefsOffset = 2; | |||
6487 | } | |||
6488 | } | |||
6489 | NumRORefs = Record[RefListStartIndex - NumRORefsOffset]; | |||
6490 | } | |||
6491 | NumRefs = Record[NumRefsIndex]; | |||
6492 | } | |||
6493 | ||||
6494 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | |||
6495 | int CallGraphEdgeStartIndex = RefListStartIndex + NumRefs; | |||
6496 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6497, __extension__ __PRETTY_FUNCTION__)) | |||
6497 | "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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6497, __extension__ __PRETTY_FUNCTION__)); | |||
6498 | std::vector<ValueInfo> Refs = makeRefList( | |||
6499 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); | |||
6500 | bool HasProfile = (BitCode == bitc::FS_COMBINED_PROFILE); | |||
6501 | std::vector<FunctionSummary::EdgeTy> Edges = makeCallList( | |||
6502 | ArrayRef<uint64_t>(Record).slice(CallGraphEdgeStartIndex), | |||
6503 | IsOldProfileFormat, HasProfile, false); | |||
6504 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; | |||
6505 | setSpecialRefs(Refs, NumRORefs, NumWORefs); | |||
6506 | auto FS = std::make_unique<FunctionSummary>( | |||
6507 | Flags, InstCount, getDecodedFFlags(RawFunFlags), EntryCount, | |||
6508 | std::move(Refs), std::move(Edges), std::move(PendingTypeTests), | |||
6509 | std::move(PendingTypeTestAssumeVCalls), | |||
6510 | std::move(PendingTypeCheckedLoadVCalls), | |||
6511 | std::move(PendingTypeTestAssumeConstVCalls), | |||
6512 | std::move(PendingTypeCheckedLoadConstVCalls), | |||
6513 | std::move(PendingParamAccesses)); | |||
6514 | LastSeenSummary = FS.get(); | |||
6515 | LastSeenGUID = VI.getGUID(); | |||
6516 | FS->setModulePath(ModuleIdMap[ModuleId]); | |||
6517 | TheIndex.addGlobalValueSummary(VI, std::move(FS)); | |||
6518 | break; | |||
6519 | } | |||
6520 | // FS_COMBINED_ALIAS: [valueid, modid, flags, valueid] | |||
6521 | // Aliases must be emitted (and parsed) after all FS_COMBINED entries, as | |||
6522 | // they expect all aliasee summaries to be available. | |||
6523 | case bitc::FS_COMBINED_ALIAS: { | |||
6524 | unsigned ValueID = Record[0]; | |||
6525 | uint64_t ModuleId = Record[1]; | |||
6526 | uint64_t RawFlags = Record[2]; | |||
6527 | unsigned AliaseeValueId = Record[3]; | |||
6528 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | |||
6529 | auto AS = std::make_unique<AliasSummary>(Flags); | |||
6530 | LastSeenSummary = AS.get(); | |||
6531 | AS->setModulePath(ModuleIdMap[ModuleId]); | |||
6532 | ||||
6533 | auto AliaseeVI = getValueInfoFromValueId(AliaseeValueId).first; | |||
6534 | auto AliaseeInModule = TheIndex.findSummaryInModule(AliaseeVI, AS->modulePath()); | |||
6535 | AS->setAliasee(AliaseeVI, AliaseeInModule); | |||
6536 | ||||
6537 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; | |||
6538 | LastSeenGUID = VI.getGUID(); | |||
6539 | TheIndex.addGlobalValueSummary(VI, std::move(AS)); | |||
6540 | break; | |||
6541 | } | |||
6542 | // FS_COMBINED_GLOBALVAR_INIT_REFS: [valueid, modid, flags, n x valueid] | |||
6543 | case bitc::FS_COMBINED_GLOBALVAR_INIT_REFS: { | |||
6544 | unsigned ValueID = Record[0]; | |||
6545 | uint64_t ModuleId = Record[1]; | |||
6546 | uint64_t RawFlags = Record[2]; | |||
6547 | unsigned RefArrayStart = 3; | |||
6548 | GlobalVarSummary::GVarFlags GVF(/* ReadOnly */ false, | |||
6549 | /* WriteOnly */ false, | |||
6550 | /* Constant */ false, | |||
6551 | GlobalObject::VCallVisibilityPublic); | |||
6552 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | |||
6553 | if (Version >= 5) { | |||
6554 | GVF = getDecodedGVarFlags(Record[3]); | |||
6555 | RefArrayStart = 4; | |||
6556 | } | |||
6557 | std::vector<ValueInfo> Refs = | |||
6558 | makeRefList(ArrayRef<uint64_t>(Record).slice(RefArrayStart)); | |||
6559 | auto FS = | |||
6560 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); | |||
6561 | LastSeenSummary = FS.get(); | |||
6562 | FS->setModulePath(ModuleIdMap[ModuleId]); | |||
6563 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; | |||
6564 | LastSeenGUID = VI.getGUID(); | |||
6565 | TheIndex.addGlobalValueSummary(VI, std::move(FS)); | |||
6566 | break; | |||
6567 | } | |||
6568 | // FS_COMBINED_ORIGINAL_NAME: [original_name] | |||
6569 | case bitc::FS_COMBINED_ORIGINAL_NAME: { | |||
6570 | uint64_t OriginalName = Record[0]; | |||
6571 | if (!LastSeenSummary) | |||
6572 | return error("Name attachment that does not follow a combined record"); | |||
6573 | LastSeenSummary->setOriginalName(OriginalName); | |||
6574 | TheIndex.addOriginalName(LastSeenGUID, OriginalName); | |||
6575 | // Reset the LastSeenSummary | |||
6576 | LastSeenSummary = nullptr; | |||
6577 | LastSeenGUID = 0; | |||
6578 | break; | |||
6579 | } | |||
6580 | case bitc::FS_TYPE_TESTS: | |||
6581 | assert(PendingTypeTests.empty())(static_cast <bool> (PendingTypeTests.empty()) ? void ( 0) : __assert_fail ("PendingTypeTests.empty()", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6581, __extension__ __PRETTY_FUNCTION__)); | |||
6582 | llvm::append_range(PendingTypeTests, Record); | |||
6583 | break; | |||
6584 | ||||
6585 | case bitc::FS_TYPE_TEST_ASSUME_VCALLS: | |||
6586 | assert(PendingTypeTestAssumeVCalls.empty())(static_cast <bool> (PendingTypeTestAssumeVCalls.empty( )) ? void (0) : __assert_fail ("PendingTypeTestAssumeVCalls.empty()" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6586, __extension__ __PRETTY_FUNCTION__)); | |||
6587 | for (unsigned I = 0; I != Record.size(); I += 2) | |||
6588 | PendingTypeTestAssumeVCalls.push_back({Record[I], Record[I+1]}); | |||
6589 | break; | |||
6590 | ||||
6591 | case bitc::FS_TYPE_CHECKED_LOAD_VCALLS: | |||
6592 | assert(PendingTypeCheckedLoadVCalls.empty())(static_cast <bool> (PendingTypeCheckedLoadVCalls.empty ()) ? void (0) : __assert_fail ("PendingTypeCheckedLoadVCalls.empty()" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6592, __extension__ __PRETTY_FUNCTION__)); | |||
6593 | for (unsigned I = 0; I != Record.size(); I += 2) | |||
6594 | PendingTypeCheckedLoadVCalls.push_back({Record[I], Record[I+1]}); | |||
6595 | break; | |||
6596 | ||||
6597 | case bitc::FS_TYPE_TEST_ASSUME_CONST_VCALL: | |||
6598 | PendingTypeTestAssumeConstVCalls.push_back( | |||
6599 | {{Record[0], Record[1]}, {Record.begin() + 2, Record.end()}}); | |||
6600 | break; | |||
6601 | ||||
6602 | case bitc::FS_TYPE_CHECKED_LOAD_CONST_VCALL: | |||
6603 | PendingTypeCheckedLoadConstVCalls.push_back( | |||
6604 | {{Record[0], Record[1]}, {Record.begin() + 2, Record.end()}}); | |||
6605 | break; | |||
6606 | ||||
6607 | case bitc::FS_CFI_FUNCTION_DEFS: { | |||
6608 | std::set<std::string> &CfiFunctionDefs = TheIndex.cfiFunctionDefs(); | |||
6609 | for (unsigned I = 0; I != Record.size(); I += 2) | |||
6610 | CfiFunctionDefs.insert( | |||
6611 | {Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])}); | |||
6612 | break; | |||
6613 | } | |||
6614 | ||||
6615 | case bitc::FS_CFI_FUNCTION_DECLS: { | |||
6616 | std::set<std::string> &CfiFunctionDecls = TheIndex.cfiFunctionDecls(); | |||
6617 | for (unsigned I = 0; I != Record.size(); I += 2) | |||
6618 | CfiFunctionDecls.insert( | |||
6619 | {Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])}); | |||
6620 | break; | |||
6621 | } | |||
6622 | ||||
6623 | case bitc::FS_TYPE_ID: | |||
6624 | parseTypeIdSummaryRecord(Record, Strtab, TheIndex); | |||
6625 | break; | |||
6626 | ||||
6627 | case bitc::FS_TYPE_ID_METADATA: | |||
6628 | parseTypeIdCompatibleVtableSummaryRecord(Record); | |||
6629 | break; | |||
6630 | ||||
6631 | case bitc::FS_BLOCK_COUNT: | |||
6632 | TheIndex.addBlockCount(Record[0]); | |||
6633 | break; | |||
6634 | ||||
6635 | case bitc::FS_PARAM_ACCESS: { | |||
6636 | PendingParamAccesses = parseParamAccesses(Record); | |||
6637 | break; | |||
6638 | } | |||
6639 | } | |||
6640 | } | |||
6641 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6641); | |||
6642 | } | |||
6643 | ||||
6644 | // Parse the module string table block into the Index. | |||
6645 | // This populates the ModulePathStringTable map in the index. | |||
6646 | Error ModuleSummaryIndexBitcodeReader::parseModuleStringTable() { | |||
6647 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_STRTAB_BLOCK_ID)) | |||
6648 | return Err; | |||
6649 | ||||
6650 | SmallVector<uint64_t, 64> Record; | |||
6651 | ||||
6652 | SmallString<128> ModulePath; | |||
6653 | ModuleSummaryIndex::ModuleInfo *LastSeenModule = nullptr; | |||
6654 | ||||
6655 | while (true) { | |||
6656 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | |||
6657 | if (!MaybeEntry) | |||
6658 | return MaybeEntry.takeError(); | |||
6659 | BitstreamEntry Entry = MaybeEntry.get(); | |||
6660 | ||||
6661 | switch (Entry.Kind) { | |||
6662 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
6663 | case BitstreamEntry::Error: | |||
6664 | return error("Malformed block"); | |||
6665 | case BitstreamEntry::EndBlock: | |||
6666 | return Error::success(); | |||
6667 | case BitstreamEntry::Record: | |||
6668 | // The interesting case. | |||
6669 | break; | |||
6670 | } | |||
6671 | ||||
6672 | Record.clear(); | |||
6673 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | |||
6674 | if (!MaybeRecord) | |||
6675 | return MaybeRecord.takeError(); | |||
6676 | switch (MaybeRecord.get()) { | |||
6677 | default: // Default behavior: ignore. | |||
6678 | break; | |||
6679 | case bitc::MST_CODE_ENTRY: { | |||
6680 | // MST_ENTRY: [modid, namechar x N] | |||
6681 | uint64_t ModuleId = Record[0]; | |||
6682 | ||||
6683 | if (convertToString(Record, 1, ModulePath)) | |||
6684 | return error("Invalid record"); | |||
6685 | ||||
6686 | LastSeenModule = TheIndex.addModule(ModulePath, ModuleId); | |||
6687 | ModuleIdMap[ModuleId] = LastSeenModule->first(); | |||
6688 | ||||
6689 | ModulePath.clear(); | |||
6690 | break; | |||
6691 | } | |||
6692 | /// MST_CODE_HASH: [5*i32] | |||
6693 | case bitc::MST_CODE_HASH: { | |||
6694 | if (Record.size() != 5) | |||
6695 | return error("Invalid hash length " + Twine(Record.size()).str()); | |||
6696 | if (!LastSeenModule) | |||
6697 | return error("Invalid hash that does not follow a module path"); | |||
6698 | int Pos = 0; | |||
6699 | for (auto &Val : Record) { | |||
6700 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 6700, __extension__ __PRETTY_FUNCTION__)); | |||
6701 | LastSeenModule->second.second[Pos++] = Val; | |||
6702 | } | |||
6703 | // Reset LastSeenModule to avoid overriding the hash unexpectedly. | |||
6704 | LastSeenModule = nullptr; | |||
6705 | break; | |||
6706 | } | |||
6707 | } | |||
6708 | } | |||
6709 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6709); | |||
6710 | } | |||
6711 | ||||
6712 | namespace { | |||
6713 | ||||
6714 | // FIXME: This class is only here to support the transition to llvm::Error. It | |||
6715 | // will be removed once this transition is complete. Clients should prefer to | |||
6716 | // deal with the Error value directly, rather than converting to error_code. | |||
6717 | class BitcodeErrorCategoryType : public std::error_category { | |||
6718 | const char *name() const noexcept override { | |||
6719 | return "llvm.bitcode"; | |||
6720 | } | |||
6721 | ||||
6722 | std::string message(int IE) const override { | |||
6723 | BitcodeError E = static_cast<BitcodeError>(IE); | |||
6724 | switch (E) { | |||
6725 | case BitcodeError::CorruptedBitcode: | |||
6726 | return "Corrupted bitcode"; | |||
6727 | } | |||
6728 | llvm_unreachable("Unknown error type!")::llvm::llvm_unreachable_internal("Unknown error type!", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6728); | |||
6729 | } | |||
6730 | }; | |||
6731 | ||||
6732 | } // end anonymous namespace | |||
6733 | ||||
6734 | static ManagedStatic<BitcodeErrorCategoryType> ErrorCategory; | |||
6735 | ||||
6736 | const std::error_category &llvm::BitcodeErrorCategory() { | |||
6737 | return *ErrorCategory; | |||
6738 | } | |||
6739 | ||||
6740 | static Expected<StringRef> readBlobInRecord(BitstreamCursor &Stream, | |||
6741 | unsigned Block, unsigned RecordID) { | |||
6742 | if (Error Err = Stream.EnterSubBlock(Block)) | |||
6743 | return std::move(Err); | |||
6744 | ||||
6745 | StringRef Strtab; | |||
6746 | while (true) { | |||
6747 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | |||
6748 | if (!MaybeEntry) | |||
6749 | return MaybeEntry.takeError(); | |||
6750 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | |||
6751 | ||||
6752 | switch (Entry.Kind) { | |||
6753 | case BitstreamEntry::EndBlock: | |||
6754 | return Strtab; | |||
6755 | ||||
6756 | case BitstreamEntry::Error: | |||
6757 | return error("Malformed block"); | |||
6758 | ||||
6759 | case BitstreamEntry::SubBlock: | |||
6760 | if (Error Err = Stream.SkipBlock()) | |||
6761 | return std::move(Err); | |||
6762 | break; | |||
6763 | ||||
6764 | case BitstreamEntry::Record: | |||
6765 | StringRef Blob; | |||
6766 | SmallVector<uint64_t, 1> Record; | |||
6767 | Expected<unsigned> MaybeRecord = | |||
6768 | Stream.readRecord(Entry.ID, Record, &Blob); | |||
6769 | if (!MaybeRecord) | |||
6770 | return MaybeRecord.takeError(); | |||
6771 | if (MaybeRecord.get() == RecordID) | |||
6772 | Strtab = Blob; | |||
6773 | break; | |||
6774 | } | |||
6775 | } | |||
6776 | } | |||
6777 | ||||
6778 | //===----------------------------------------------------------------------===// | |||
6779 | // External interface | |||
6780 | //===----------------------------------------------------------------------===// | |||
6781 | ||||
6782 | Expected<std::vector<BitcodeModule>> | |||
6783 | llvm::getBitcodeModuleList(MemoryBufferRef Buffer) { | |||
6784 | auto FOrErr = getBitcodeFileContents(Buffer); | |||
6785 | if (!FOrErr) | |||
6786 | return FOrErr.takeError(); | |||
6787 | return std::move(FOrErr->Mods); | |||
6788 | } | |||
6789 | ||||
6790 | Expected<BitcodeFileContents> | |||
6791 | llvm::getBitcodeFileContents(MemoryBufferRef Buffer) { | |||
6792 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); | |||
6793 | if (!StreamOrErr) | |||
6794 | return StreamOrErr.takeError(); | |||
6795 | BitstreamCursor &Stream = *StreamOrErr; | |||
6796 | ||||
6797 | BitcodeFileContents F; | |||
6798 | while (true) { | |||
6799 | uint64_t BCBegin = Stream.getCurrentByteNo(); | |||
6800 | ||||
6801 | // We may be consuming bitcode from a client that leaves garbage at the end | |||
6802 | // of the bitcode stream (e.g. Apple's ar tool). If we are close enough to | |||
6803 | // the end that there cannot possibly be another module, stop looking. | |||
6804 | if (BCBegin + 8 >= Stream.getBitcodeBytes().size()) | |||
6805 | return F; | |||
6806 | ||||
6807 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | |||
6808 | if (!MaybeEntry) | |||
6809 | return MaybeEntry.takeError(); | |||
6810 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | |||
6811 | ||||
6812 | switch (Entry.Kind) { | |||
6813 | case BitstreamEntry::EndBlock: | |||
6814 | case BitstreamEntry::Error: | |||
6815 | return error("Malformed block"); | |||
6816 | ||||
6817 | case BitstreamEntry::SubBlock: { | |||
6818 | uint64_t IdentificationBit = -1ull; | |||
6819 | if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) { | |||
6820 | IdentificationBit = Stream.GetCurrentBitNo() - BCBegin * 8; | |||
6821 | if (Error Err = Stream.SkipBlock()) | |||
6822 | return std::move(Err); | |||
6823 | ||||
6824 | { | |||
6825 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | |||
6826 | if (!MaybeEntry) | |||
6827 | return MaybeEntry.takeError(); | |||
6828 | Entry = MaybeEntry.get(); | |||
6829 | } | |||
6830 | ||||
6831 | if (Entry.Kind != BitstreamEntry::SubBlock || | |||
6832 | Entry.ID != bitc::MODULE_BLOCK_ID) | |||
6833 | return error("Malformed block"); | |||
6834 | } | |||
6835 | ||||
6836 | if (Entry.ID == bitc::MODULE_BLOCK_ID) { | |||
6837 | uint64_t ModuleBit = Stream.GetCurrentBitNo() - BCBegin * 8; | |||
6838 | if (Error Err = Stream.SkipBlock()) | |||
6839 | return std::move(Err); | |||
6840 | ||||
6841 | F.Mods.push_back({Stream.getBitcodeBytes().slice( | |||
6842 | BCBegin, Stream.getCurrentByteNo() - BCBegin), | |||
6843 | Buffer.getBufferIdentifier(), IdentificationBit, | |||
6844 | ModuleBit}); | |||
6845 | continue; | |||
6846 | } | |||
6847 | ||||
6848 | if (Entry.ID == bitc::STRTAB_BLOCK_ID) { | |||
6849 | Expected<StringRef> Strtab = | |||
6850 | readBlobInRecord(Stream, bitc::STRTAB_BLOCK_ID, bitc::STRTAB_BLOB); | |||
6851 | if (!Strtab) | |||
6852 | return Strtab.takeError(); | |||
6853 | // This string table is used by every preceding bitcode module that does | |||
6854 | // not have its own string table. A bitcode file may have multiple | |||
6855 | // string tables if it was created by binary concatenation, for example | |||
6856 | // with "llvm-cat -b". | |||
6857 | for (BitcodeModule &I : llvm::reverse(F.Mods)) { | |||
6858 | if (!I.Strtab.empty()) | |||
6859 | break; | |||
6860 | I.Strtab = *Strtab; | |||
6861 | } | |||
6862 | // Similarly, the string table is used by every preceding symbol table; | |||
6863 | // normally there will be just one unless the bitcode file was created | |||
6864 | // by binary concatenation. | |||
6865 | if (!F.Symtab.empty() && F.StrtabForSymtab.empty()) | |||
6866 | F.StrtabForSymtab = *Strtab; | |||
6867 | continue; | |||
6868 | } | |||
6869 | ||||
6870 | if (Entry.ID == bitc::SYMTAB_BLOCK_ID) { | |||
6871 | Expected<StringRef> SymtabOrErr = | |||
6872 | readBlobInRecord(Stream, bitc::SYMTAB_BLOCK_ID, bitc::SYMTAB_BLOB); | |||
6873 | if (!SymtabOrErr) | |||
6874 | return SymtabOrErr.takeError(); | |||
6875 | ||||
6876 | // We can expect the bitcode file to have multiple symbol tables if it | |||
6877 | // was created by binary concatenation. In that case we silently | |||
6878 | // ignore any subsequent symbol tables, which is fine because this is a | |||
6879 | // low level function. The client is expected to notice that the number | |||
6880 | // of modules in the symbol table does not match the number of modules | |||
6881 | // in the input file and regenerate the symbol table. | |||
6882 | if (F.Symtab.empty()) | |||
6883 | F.Symtab = *SymtabOrErr; | |||
6884 | continue; | |||
6885 | } | |||
6886 | ||||
6887 | if (Error Err = Stream.SkipBlock()) | |||
6888 | return std::move(Err); | |||
6889 | continue; | |||
6890 | } | |||
6891 | case BitstreamEntry::Record: | |||
6892 | if (Error E = Stream.skipRecord(Entry.ID).takeError()) | |||
6893 | return std::move(E); | |||
6894 | continue; | |||
6895 | } | |||
6896 | } | |||
6897 | } | |||
6898 | ||||
6899 | /// Get a lazy one-at-time loading module from bitcode. | |||
6900 | /// | |||
6901 | /// This isn't always used in a lazy context. In particular, it's also used by | |||
6902 | /// \a parseModule(). If this is truly lazy, then we need to eagerly pull | |||
6903 | /// in forward-referenced functions from block address references. | |||
6904 | /// | |||
6905 | /// \param[in] MaterializeAll Set to \c true if we should materialize | |||
6906 | /// everything. | |||
6907 | Expected<std::unique_ptr<Module>> | |||
6908 | BitcodeModule::getModuleImpl(LLVMContext &Context, bool MaterializeAll, | |||
6909 | bool ShouldLazyLoadMetadata, bool IsImporting, | |||
6910 | DataLayoutCallbackTy DataLayoutCallback) { | |||
6911 | BitstreamCursor Stream(Buffer); | |||
6912 | ||||
6913 | std::string ProducerIdentification; | |||
6914 | if (IdentificationBit != -1ull) { | |||
6915 | if (Error JumpFailed = Stream.JumpToBit(IdentificationBit)) | |||
6916 | return std::move(JumpFailed); | |||
6917 | if (Error E = | |||
6918 | readIdentificationBlock(Stream).moveInto(ProducerIdentification)) | |||
6919 | return std::move(E); | |||
6920 | } | |||
6921 | ||||
6922 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) | |||
6923 | return std::move(JumpFailed); | |||
6924 | auto *R = new BitcodeReader(std::move(Stream), Strtab, ProducerIdentification, | |||
6925 | Context); | |||
6926 | ||||
6927 | std::unique_ptr<Module> M = | |||
6928 | std::make_unique<Module>(ModuleIdentifier, Context); | |||
6929 | M->setMaterializer(R); | |||
6930 | ||||
6931 | // Delay parsing Metadata if ShouldLazyLoadMetadata is true. | |||
6932 | if (Error Err = R->parseBitcodeInto(M.get(), ShouldLazyLoadMetadata, | |||
6933 | IsImporting, DataLayoutCallback)) | |||
6934 | return std::move(Err); | |||
6935 | ||||
6936 | if (MaterializeAll) { | |||
6937 | // Read in the entire module, and destroy the BitcodeReader. | |||
6938 | if (Error Err = M->materializeAll()) | |||
6939 | return std::move(Err); | |||
6940 | } else { | |||
6941 | // Resolve forward references from blockaddresses. | |||
6942 | if (Error Err = R->materializeForwardReferencedFunctions()) | |||
6943 | return std::move(Err); | |||
6944 | } | |||
6945 | return std::move(M); | |||
6946 | } | |||
6947 | ||||
6948 | Expected<std::unique_ptr<Module>> | |||
6949 | BitcodeModule::getLazyModule(LLVMContext &Context, bool ShouldLazyLoadMetadata, | |||
6950 | bool IsImporting) { | |||
6951 | return getModuleImpl(Context, false, ShouldLazyLoadMetadata, IsImporting, | |||
6952 | [](StringRef) { return None; }); | |||
6953 | } | |||
6954 | ||||
6955 | // Parse the specified bitcode buffer and merge the index into CombinedIndex. | |||
6956 | // We don't use ModuleIdentifier here because the client may need to control the | |||
6957 | // module path used in the combined summary (e.g. when reading summaries for | |||
6958 | // regular LTO modules). | |||
6959 | Error BitcodeModule::readSummary(ModuleSummaryIndex &CombinedIndex, | |||
6960 | StringRef ModulePath, uint64_t ModuleId) { | |||
6961 | BitstreamCursor Stream(Buffer); | |||
6962 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) | |||
6963 | return JumpFailed; | |||
6964 | ||||
6965 | ModuleSummaryIndexBitcodeReader R(std::move(Stream), Strtab, CombinedIndex, | |||
6966 | ModulePath, ModuleId); | |||
6967 | return R.parseModule(); | |||
6968 | } | |||
6969 | ||||
6970 | // Parse the specified bitcode buffer, returning the function info index. | |||
6971 | Expected<std::unique_ptr<ModuleSummaryIndex>> BitcodeModule::getSummary() { | |||
6972 | BitstreamCursor Stream(Buffer); | |||
6973 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) | |||
6974 | return std::move(JumpFailed); | |||
6975 | ||||
6976 | auto Index = std::make_unique<ModuleSummaryIndex>(/*HaveGVs=*/false); | |||
6977 | ModuleSummaryIndexBitcodeReader R(std::move(Stream), Strtab, *Index, | |||
6978 | ModuleIdentifier, 0); | |||
6979 | ||||
6980 | if (Error Err = R.parseModule()) | |||
6981 | return std::move(Err); | |||
6982 | ||||
6983 | return std::move(Index); | |||
6984 | } | |||
6985 | ||||
6986 | static Expected<bool> getEnableSplitLTOUnitFlag(BitstreamCursor &Stream, | |||
6987 | unsigned ID) { | |||
6988 | if (Error Err = Stream.EnterSubBlock(ID)) | |||
6989 | return std::move(Err); | |||
6990 | SmallVector<uint64_t, 64> Record; | |||
6991 | ||||
6992 | while (true) { | |||
6993 | BitstreamEntry Entry; | |||
6994 | if (Error E = Stream.advanceSkippingSubblocks().moveInto(Entry)) | |||
6995 | return std::move(E); | |||
6996 | ||||
6997 | switch (Entry.Kind) { | |||
6998 | case BitstreamEntry::SubBlock: // Handled for us already. | |||
6999 | case BitstreamEntry::Error: | |||
7000 | return error("Malformed block"); | |||
7001 | case BitstreamEntry::EndBlock: | |||
7002 | // If no flags record found, conservatively return true to mimic | |||
7003 | // behavior before this flag was added. | |||
7004 | return true; | |||
7005 | case BitstreamEntry::Record: | |||
7006 | // The interesting case. | |||
7007 | break; | |||
7008 | } | |||
7009 | ||||
7010 | // Look for the FS_FLAGS record. | |||
7011 | Record.clear(); | |||
7012 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | |||
7013 | if (!MaybeBitCode) | |||
7014 | return MaybeBitCode.takeError(); | |||
7015 | switch (MaybeBitCode.get()) { | |||
7016 | default: // Default behavior: ignore. | |||
7017 | break; | |||
7018 | case bitc::FS_FLAGS: { // [flags] | |||
7019 | uint64_t Flags = Record[0]; | |||
7020 | // Scan flags. | |||
7021 | 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\"" , "llvm/lib/Bitcode/Reader/BitcodeReader.cpp", 7021, __extension__ __PRETTY_FUNCTION__)); | |||
7022 | ||||
7023 | return Flags & 0x8; | |||
7024 | } | |||
7025 | } | |||
7026 | } | |||
7027 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 7027); | |||
7028 | } | |||
7029 | ||||
7030 | // Check if the given bitcode buffer contains a global value summary block. | |||
7031 | Expected<BitcodeLTOInfo> BitcodeModule::getLTOInfo() { | |||
7032 | BitstreamCursor Stream(Buffer); | |||
7033 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) | |||
7034 | return std::move(JumpFailed); | |||
7035 | ||||
7036 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | |||
7037 | return std::move(Err); | |||
7038 | ||||
7039 | while (true) { | |||
7040 | llvm::BitstreamEntry Entry; | |||
7041 | if (Error E = Stream.advance().moveInto(Entry)) | |||
7042 | return std::move(E); | |||
7043 | ||||
7044 | switch (Entry.Kind) { | |||
7045 | case BitstreamEntry::Error: | |||
7046 | return error("Malformed block"); | |||
7047 | case BitstreamEntry::EndBlock: | |||
7048 | return BitcodeLTOInfo{/*IsThinLTO=*/false, /*HasSummary=*/false, | |||
7049 | /*EnableSplitLTOUnit=*/false}; | |||
7050 | ||||
7051 | case BitstreamEntry::SubBlock: | |||
7052 | if (Entry.ID == bitc::GLOBALVAL_SUMMARY_BLOCK_ID) { | |||
7053 | Expected<bool> EnableSplitLTOUnit = | |||
7054 | getEnableSplitLTOUnitFlag(Stream, Entry.ID); | |||
7055 | if (!EnableSplitLTOUnit) | |||
7056 | return EnableSplitLTOUnit.takeError(); | |||
7057 | return BitcodeLTOInfo{/*IsThinLTO=*/true, /*HasSummary=*/true, | |||
7058 | *EnableSplitLTOUnit}; | |||
7059 | } | |||
7060 | ||||
7061 | if (Entry.ID == bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID) { | |||
7062 | Expected<bool> EnableSplitLTOUnit = | |||
7063 | getEnableSplitLTOUnitFlag(Stream, Entry.ID); | |||
7064 | if (!EnableSplitLTOUnit) | |||
7065 | return EnableSplitLTOUnit.takeError(); | |||
7066 | return BitcodeLTOInfo{/*IsThinLTO=*/false, /*HasSummary=*/true, | |||
7067 | *EnableSplitLTOUnit}; | |||
7068 | } | |||
7069 | ||||
7070 | // Ignore other sub-blocks. | |||
7071 | if (Error Err = Stream.SkipBlock()) | |||
7072 | return std::move(Err); | |||
7073 | continue; | |||
7074 | ||||
7075 | case BitstreamEntry::Record: | |||
7076 | if (Expected<unsigned> StreamFailed = Stream.skipRecord(Entry.ID)) | |||
7077 | continue; | |||
7078 | else | |||
7079 | return StreamFailed.takeError(); | |||
7080 | } | |||
7081 | } | |||
7082 | } | |||
7083 | ||||
7084 | static Expected<BitcodeModule> getSingleModule(MemoryBufferRef Buffer) { | |||
7085 | Expected<std::vector<BitcodeModule>> MsOrErr = getBitcodeModuleList(Buffer); | |||
7086 | if (!MsOrErr) | |||
7087 | return MsOrErr.takeError(); | |||
7088 | ||||
7089 | if (MsOrErr->size() != 1) | |||
7090 | return error("Expected a single module"); | |||
7091 | ||||
7092 | return (*MsOrErr)[0]; | |||
7093 | } | |||
7094 | ||||
7095 | Expected<std::unique_ptr<Module>> | |||
7096 | llvm::getLazyBitcodeModule(MemoryBufferRef Buffer, LLVMContext &Context, | |||
7097 | bool ShouldLazyLoadMetadata, bool IsImporting) { | |||
7098 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | |||
7099 | if (!BM) | |||
7100 | return BM.takeError(); | |||
7101 | ||||
7102 | return BM->getLazyModule(Context, ShouldLazyLoadMetadata, IsImporting); | |||
7103 | } | |||
7104 | ||||
7105 | Expected<std::unique_ptr<Module>> llvm::getOwningLazyBitcodeModule( | |||
7106 | std::unique_ptr<MemoryBuffer> &&Buffer, LLVMContext &Context, | |||
7107 | bool ShouldLazyLoadMetadata, bool IsImporting) { | |||
7108 | auto MOrErr = getLazyBitcodeModule(*Buffer, Context, ShouldLazyLoadMetadata, | |||
7109 | IsImporting); | |||
7110 | if (MOrErr) | |||
7111 | (*MOrErr)->setOwnedMemoryBuffer(std::move(Buffer)); | |||
7112 | return MOrErr; | |||
7113 | } | |||
7114 | ||||
7115 | Expected<std::unique_ptr<Module>> | |||
7116 | BitcodeModule::parseModule(LLVMContext &Context, | |||
7117 | DataLayoutCallbackTy DataLayoutCallback) { | |||
7118 | return getModuleImpl(Context, true, false, false, DataLayoutCallback); | |||
7119 | // TODO: Restore the use-lists to the in-memory state when the bitcode was | |||
7120 | // written. We must defer until the Module has been fully materialized. | |||
7121 | } | |||
7122 | ||||
7123 | Expected<std::unique_ptr<Module>> | |||
7124 | llvm::parseBitcodeFile(MemoryBufferRef Buffer, LLVMContext &Context, | |||
7125 | DataLayoutCallbackTy DataLayoutCallback) { | |||
7126 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | |||
7127 | if (!BM) | |||
| ||||
7128 | return BM.takeError(); | |||
7129 | ||||
7130 | return BM->parseModule(Context, DataLayoutCallback); | |||
7131 | } | |||
7132 | ||||
7133 | Expected<std::string> llvm::getBitcodeTargetTriple(MemoryBufferRef Buffer) { | |||
7134 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); | |||
7135 | if (!StreamOrErr) | |||
7136 | return StreamOrErr.takeError(); | |||
7137 | ||||
7138 | return readTriple(*StreamOrErr); | |||
7139 | } | |||
7140 | ||||
7141 | Expected<bool> llvm::isBitcodeContainingObjCCategory(MemoryBufferRef Buffer) { | |||
7142 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); | |||
7143 | if (!StreamOrErr) | |||
7144 | return StreamOrErr.takeError(); | |||
7145 | ||||
7146 | return hasObjCCategory(*StreamOrErr); | |||
7147 | } | |||
7148 | ||||
7149 | Expected<std::string> llvm::getBitcodeProducerString(MemoryBufferRef Buffer) { | |||
7150 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); | |||
7151 | if (!StreamOrErr) | |||
7152 | return StreamOrErr.takeError(); | |||
7153 | ||||
7154 | return readIdentificationCode(*StreamOrErr); | |||
7155 | } | |||
7156 | ||||
7157 | Error llvm::readModuleSummaryIndex(MemoryBufferRef Buffer, | |||
7158 | ModuleSummaryIndex &CombinedIndex, | |||
7159 | uint64_t ModuleId) { | |||
7160 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | |||
7161 | if (!BM) | |||
7162 | return BM.takeError(); | |||
7163 | ||||
7164 | return BM->readSummary(CombinedIndex, BM->getModuleIdentifier(), ModuleId); | |||
7165 | } | |||
7166 | ||||
7167 | Expected<std::unique_ptr<ModuleSummaryIndex>> | |||
7168 | llvm::getModuleSummaryIndex(MemoryBufferRef Buffer) { | |||
7169 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | |||
7170 | if (!BM) | |||
7171 | return BM.takeError(); | |||
7172 | ||||
7173 | return BM->getSummary(); | |||
7174 | } | |||
7175 | ||||
7176 | Expected<BitcodeLTOInfo> llvm::getBitcodeLTOInfo(MemoryBufferRef Buffer) { | |||
7177 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | |||
7178 | if (!BM) | |||
7179 | return BM.takeError(); | |||
7180 | ||||
7181 | return BM->getLTOInfo(); | |||
7182 | } | |||
7183 | ||||
7184 | Expected<std::unique_ptr<ModuleSummaryIndex>> | |||
7185 | llvm::getModuleSummaryIndexForFile(StringRef Path, | |||
7186 | bool IgnoreEmptyThinLTOIndexFile) { | |||
7187 | ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr = | |||
7188 | MemoryBuffer::getFileOrSTDIN(Path); | |||
7189 | if (!FileOrErr) | |||
7190 | return errorCodeToError(FileOrErr.getError()); | |||
7191 | if (IgnoreEmptyThinLTOIndexFile && !(*FileOrErr)->getBufferSize()) | |||
7192 | return nullptr; | |||
7193 | return getModuleSummaryIndex(**FileOrErr); | |||
7194 | } |