File: | llvm/lib/Bitcode/Reader/BitcodeReader.cpp |
Warning: | line 4942, column 9 Called C++ object pointer is null |
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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/Bitstream/BitstreamReader.h" | ||||
24 | #include "llvm/Bitcode/LLVMBitCodes.h" | ||||
25 | #include "llvm/Config/llvm-config.h" | ||||
26 | #include "llvm/IR/Argument.h" | ||||
27 | #include "llvm/IR/Attributes.h" | ||||
28 | #include "llvm/IR/AutoUpgrade.h" | ||||
29 | #include "llvm/IR/BasicBlock.h" | ||||
30 | #include "llvm/IR/CallSite.h" | ||||
31 | #include "llvm/IR/CallingConv.h" | ||||
32 | #include "llvm/IR/Comdat.h" | ||||
33 | #include "llvm/IR/Constant.h" | ||||
34 | #include "llvm/IR/Constants.h" | ||||
35 | #include "llvm/IR/DataLayout.h" | ||||
36 | #include "llvm/IR/DebugInfo.h" | ||||
37 | #include "llvm/IR/DebugInfoMetadata.h" | ||||
38 | #include "llvm/IR/DebugLoc.h" | ||||
39 | #include "llvm/IR/DerivedTypes.h" | ||||
40 | #include "llvm/IR/Function.h" | ||||
41 | #include "llvm/IR/GVMaterializer.h" | ||||
42 | #include "llvm/IR/GlobalAlias.h" | ||||
43 | #include "llvm/IR/GlobalIFunc.h" | ||||
44 | #include "llvm/IR/GlobalIndirectSymbol.h" | ||||
45 | #include "llvm/IR/GlobalObject.h" | ||||
46 | #include "llvm/IR/GlobalValue.h" | ||||
47 | #include "llvm/IR/GlobalVariable.h" | ||||
48 | #include "llvm/IR/InlineAsm.h" | ||||
49 | #include "llvm/IR/InstIterator.h" | ||||
50 | #include "llvm/IR/InstrTypes.h" | ||||
51 | #include "llvm/IR/Instruction.h" | ||||
52 | #include "llvm/IR/Instructions.h" | ||||
53 | #include "llvm/IR/Intrinsics.h" | ||||
54 | #include "llvm/IR/LLVMContext.h" | ||||
55 | #include "llvm/IR/Metadata.h" | ||||
56 | #include "llvm/IR/Module.h" | ||||
57 | #include "llvm/IR/ModuleSummaryIndex.h" | ||||
58 | #include "llvm/IR/Operator.h" | ||||
59 | #include "llvm/IR/Type.h" | ||||
60 | #include "llvm/IR/Value.h" | ||||
61 | #include "llvm/IR/Verifier.h" | ||||
62 | #include "llvm/Support/AtomicOrdering.h" | ||||
63 | #include "llvm/Support/Casting.h" | ||||
64 | #include "llvm/Support/CommandLine.h" | ||||
65 | #include "llvm/Support/Compiler.h" | ||||
66 | #include "llvm/Support/Debug.h" | ||||
67 | #include "llvm/Support/Error.h" | ||||
68 | #include "llvm/Support/ErrorHandling.h" | ||||
69 | #include "llvm/Support/ErrorOr.h" | ||||
70 | #include "llvm/Support/ManagedStatic.h" | ||||
71 | #include "llvm/Support/MathExtras.h" | ||||
72 | #include "llvm/Support/MemoryBuffer.h" | ||||
73 | #include "llvm/Support/raw_ostream.h" | ||||
74 | #include <algorithm> | ||||
75 | #include <cassert> | ||||
76 | #include <cstddef> | ||||
77 | #include <cstdint> | ||||
78 | #include <deque> | ||||
79 | #include <map> | ||||
80 | #include <memory> | ||||
81 | #include <set> | ||||
82 | #include <string> | ||||
83 | #include <system_error> | ||||
84 | #include <tuple> | ||||
85 | #include <utility> | ||||
86 | #include <vector> | ||||
87 | |||||
88 | using namespace llvm; | ||||
89 | |||||
90 | static cl::opt<bool> PrintSummaryGUIDs( | ||||
91 | "print-summary-global-ids", cl::init(false), cl::Hidden, | ||||
92 | cl::desc( | ||||
93 | "Print the global id for each value when reading the module summary")); | ||||
94 | |||||
95 | namespace { | ||||
96 | |||||
97 | enum { | ||||
98 | SWITCH_INST_MAGIC = 0x4B5 // May 2012 => 1205 => Hex | ||||
99 | }; | ||||
100 | |||||
101 | } // end anonymous namespace | ||||
102 | |||||
103 | static Error error(const Twine &Message) { | ||||
104 | return make_error<StringError>( | ||||
105 | Message, make_error_code(BitcodeError::CorruptedBitcode)); | ||||
106 | } | ||||
107 | |||||
108 | static Error hasInvalidBitcodeHeader(BitstreamCursor &Stream) { | ||||
109 | if (!Stream.canSkipToPos(4)) | ||||
110 | return createStringError(std::errc::illegal_byte_sequence, | ||||
111 | "file too small to contain bitcode header"); | ||||
112 | for (unsigned C : {'B', 'C'}) | ||||
113 | if (Expected<SimpleBitstreamCursor::word_t> Res = Stream.Read(8)) { | ||||
114 | if (Res.get() != C) | ||||
115 | return createStringError(std::errc::illegal_byte_sequence, | ||||
116 | "file doesn't start with bitcode header"); | ||||
117 | } else | ||||
118 | return Res.takeError(); | ||||
119 | for (unsigned C : {0x0, 0xC, 0xE, 0xD}) | ||||
120 | if (Expected<SimpleBitstreamCursor::word_t> Res = Stream.Read(4)) { | ||||
121 | if (Res.get() != C) | ||||
122 | return createStringError(std::errc::illegal_byte_sequence, | ||||
123 | "file doesn't start with bitcode header"); | ||||
124 | } else | ||||
125 | return Res.takeError(); | ||||
126 | return Error::success(); | ||||
127 | } | ||||
128 | |||||
129 | static Expected<BitstreamCursor> initStream(MemoryBufferRef Buffer) { | ||||
130 | const unsigned char *BufPtr = (const unsigned char *)Buffer.getBufferStart(); | ||||
131 | const unsigned char *BufEnd = BufPtr + Buffer.getBufferSize(); | ||||
132 | |||||
133 | if (Buffer.getBufferSize() & 3) | ||||
134 | return error("Invalid bitcode signature"); | ||||
135 | |||||
136 | // If we have a wrapper header, parse it and ignore the non-bc file contents. | ||||
137 | // The magic number is 0x0B17C0DE stored in little endian. | ||||
138 | if (isBitcodeWrapper(BufPtr, BufEnd)) | ||||
139 | if (SkipBitcodeWrapperHeader(BufPtr, BufEnd, true)) | ||||
140 | return error("Invalid bitcode wrapper header"); | ||||
141 | |||||
142 | BitstreamCursor Stream(ArrayRef<uint8_t>(BufPtr, BufEnd)); | ||||
143 | if (Error Err = hasInvalidBitcodeHeader(Stream)) | ||||
144 | return std::move(Err); | ||||
145 | |||||
146 | return std::move(Stream); | ||||
147 | } | ||||
148 | |||||
149 | /// Convert a string from a record into an std::string, return true on failure. | ||||
150 | template <typename StrTy> | ||||
151 | static bool convertToString(ArrayRef<uint64_t> Record, unsigned Idx, | ||||
152 | StrTy &Result) { | ||||
153 | if (Idx > Record.size()) | ||||
154 | return true; | ||||
155 | |||||
156 | for (unsigned i = Idx, e = Record.size(); i != e; ++i) | ||||
157 | Result += (char)Record[i]; | ||||
158 | return false; | ||||
159 | } | ||||
160 | |||||
161 | // Strip all the TBAA attachment for the module. | ||||
162 | static void stripTBAA(Module *M) { | ||||
163 | for (auto &F : *M) { | ||||
164 | if (F.isMaterializable()) | ||||
165 | continue; | ||||
166 | for (auto &I : instructions(F)) | ||||
167 | I.setMetadata(LLVMContext::MD_tbaa, nullptr); | ||||
168 | } | ||||
169 | } | ||||
170 | |||||
171 | /// Read the "IDENTIFICATION_BLOCK_ID" block, do some basic enforcement on the | ||||
172 | /// "epoch" encoded in the bitcode, and return the producer name if any. | ||||
173 | static Expected<std::string> readIdentificationBlock(BitstreamCursor &Stream) { | ||||
174 | if (Error Err = Stream.EnterSubBlock(bitc::IDENTIFICATION_BLOCK_ID)) | ||||
175 | return std::move(Err); | ||||
176 | |||||
177 | // Read all the records. | ||||
178 | SmallVector<uint64_t, 64> Record; | ||||
179 | |||||
180 | std::string ProducerIdentification; | ||||
181 | |||||
182 | while (true) { | ||||
183 | BitstreamEntry Entry; | ||||
184 | if (Expected<BitstreamEntry> Res = Stream.advance()) | ||||
185 | Entry = Res.get(); | ||||
186 | else | ||||
187 | return Res.takeError(); | ||||
188 | |||||
189 | switch (Entry.Kind) { | ||||
190 | default: | ||||
191 | case BitstreamEntry::Error: | ||||
192 | return error("Malformed block"); | ||||
193 | case BitstreamEntry::EndBlock: | ||||
194 | return ProducerIdentification; | ||||
195 | case BitstreamEntry::Record: | ||||
196 | // The interesting case. | ||||
197 | break; | ||||
198 | } | ||||
199 | |||||
200 | // Read a record. | ||||
201 | Record.clear(); | ||||
202 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | ||||
203 | if (!MaybeBitCode) | ||||
204 | return MaybeBitCode.takeError(); | ||||
205 | switch (MaybeBitCode.get()) { | ||||
206 | default: // Default behavior: reject | ||||
207 | return error("Invalid value"); | ||||
208 | case bitc::IDENTIFICATION_CODE_STRING: // IDENTIFICATION: [strchr x N] | ||||
209 | convertToString(Record, 0, ProducerIdentification); | ||||
210 | break; | ||||
211 | case bitc::IDENTIFICATION_CODE_EPOCH: { // EPOCH: [epoch#] | ||||
212 | unsigned epoch = (unsigned)Record[0]; | ||||
213 | if (epoch != bitc::BITCODE_CURRENT_EPOCH) { | ||||
214 | return error( | ||||
215 | Twine("Incompatible epoch: Bitcode '") + Twine(epoch) + | ||||
216 | "' vs current: '" + Twine(bitc::BITCODE_CURRENT_EPOCH) + "'"); | ||||
217 | } | ||||
218 | } | ||||
219 | } | ||||
220 | } | ||||
221 | } | ||||
222 | |||||
223 | static Expected<std::string> readIdentificationCode(BitstreamCursor &Stream) { | ||||
224 | // We expect a number of well-defined blocks, though we don't necessarily | ||||
225 | // need to understand them all. | ||||
226 | while (true) { | ||||
227 | if (Stream.AtEndOfStream()) | ||||
228 | return ""; | ||||
229 | |||||
230 | BitstreamEntry Entry; | ||||
231 | if (Expected<BitstreamEntry> Res = Stream.advance()) | ||||
232 | Entry = std::move(Res.get()); | ||||
233 | else | ||||
234 | return Res.takeError(); | ||||
235 | |||||
236 | switch (Entry.Kind) { | ||||
237 | case BitstreamEntry::EndBlock: | ||||
238 | case BitstreamEntry::Error: | ||||
239 | return error("Malformed block"); | ||||
240 | |||||
241 | case BitstreamEntry::SubBlock: | ||||
242 | if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) | ||||
243 | return readIdentificationBlock(Stream); | ||||
244 | |||||
245 | // Ignore other sub-blocks. | ||||
246 | if (Error Err = Stream.SkipBlock()) | ||||
247 | return std::move(Err); | ||||
248 | continue; | ||||
249 | case BitstreamEntry::Record: | ||||
250 | if (Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID)) | ||||
251 | continue; | ||||
252 | else | ||||
253 | return Skipped.takeError(); | ||||
254 | } | ||||
255 | } | ||||
256 | } | ||||
257 | |||||
258 | static Expected<bool> hasObjCCategoryInModule(BitstreamCursor &Stream) { | ||||
259 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | ||||
260 | return std::move(Err); | ||||
261 | |||||
262 | SmallVector<uint64_t, 64> Record; | ||||
263 | // Read all the records for this module. | ||||
264 | |||||
265 | while (true) { | ||||
266 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
267 | if (!MaybeEntry) | ||||
268 | return MaybeEntry.takeError(); | ||||
269 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
270 | |||||
271 | switch (Entry.Kind) { | ||||
272 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
273 | case BitstreamEntry::Error: | ||||
274 | return error("Malformed block"); | ||||
275 | case BitstreamEntry::EndBlock: | ||||
276 | return false; | ||||
277 | case BitstreamEntry::Record: | ||||
278 | // The interesting case. | ||||
279 | break; | ||||
280 | } | ||||
281 | |||||
282 | // Read a record. | ||||
283 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
284 | if (!MaybeRecord) | ||||
285 | return MaybeRecord.takeError(); | ||||
286 | switch (MaybeRecord.get()) { | ||||
287 | default: | ||||
288 | break; // Default behavior, ignore unknown content. | ||||
289 | case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N] | ||||
290 | std::string S; | ||||
291 | if (convertToString(Record, 0, S)) | ||||
292 | return error("Invalid record"); | ||||
293 | // Check for the i386 and other (x86_64, ARM) conventions | ||||
294 | if (S.find("__DATA,__objc_catlist") != std::string::npos || | ||||
295 | S.find("__OBJC,__category") != std::string::npos) | ||||
296 | return true; | ||||
297 | break; | ||||
298 | } | ||||
299 | } | ||||
300 | Record.clear(); | ||||
301 | } | ||||
302 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 302); | ||||
303 | } | ||||
304 | |||||
305 | static Expected<bool> hasObjCCategory(BitstreamCursor &Stream) { | ||||
306 | // We expect a number of well-defined blocks, though we don't necessarily | ||||
307 | // need to understand them all. | ||||
308 | while (true) { | ||||
309 | BitstreamEntry Entry; | ||||
310 | if (Expected<BitstreamEntry> Res = Stream.advance()) | ||||
311 | Entry = std::move(Res.get()); | ||||
312 | else | ||||
313 | return Res.takeError(); | ||||
314 | |||||
315 | switch (Entry.Kind) { | ||||
316 | case BitstreamEntry::Error: | ||||
317 | return error("Malformed block"); | ||||
318 | case BitstreamEntry::EndBlock: | ||||
319 | return false; | ||||
320 | |||||
321 | case BitstreamEntry::SubBlock: | ||||
322 | if (Entry.ID == bitc::MODULE_BLOCK_ID) | ||||
323 | return hasObjCCategoryInModule(Stream); | ||||
324 | |||||
325 | // Ignore other sub-blocks. | ||||
326 | if (Error Err = Stream.SkipBlock()) | ||||
327 | return std::move(Err); | ||||
328 | continue; | ||||
329 | |||||
330 | case BitstreamEntry::Record: | ||||
331 | if (Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID)) | ||||
332 | continue; | ||||
333 | else | ||||
334 | return Skipped.takeError(); | ||||
335 | } | ||||
336 | } | ||||
337 | } | ||||
338 | |||||
339 | static Expected<std::string> readModuleTriple(BitstreamCursor &Stream) { | ||||
340 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | ||||
341 | return std::move(Err); | ||||
342 | |||||
343 | SmallVector<uint64_t, 64> Record; | ||||
344 | |||||
345 | std::string Triple; | ||||
346 | |||||
347 | // Read all the records for this module. | ||||
348 | while (true) { | ||||
349 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
350 | if (!MaybeEntry) | ||||
351 | return MaybeEntry.takeError(); | ||||
352 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
353 | |||||
354 | switch (Entry.Kind) { | ||||
355 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
356 | case BitstreamEntry::Error: | ||||
357 | return error("Malformed block"); | ||||
358 | case BitstreamEntry::EndBlock: | ||||
359 | return Triple; | ||||
360 | case BitstreamEntry::Record: | ||||
361 | // The interesting case. | ||||
362 | break; | ||||
363 | } | ||||
364 | |||||
365 | // Read a record. | ||||
366 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
367 | if (!MaybeRecord) | ||||
368 | return MaybeRecord.takeError(); | ||||
369 | switch (MaybeRecord.get()) { | ||||
370 | default: break; // Default behavior, ignore unknown content. | ||||
371 | case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N] | ||||
372 | std::string S; | ||||
373 | if (convertToString(Record, 0, S)) | ||||
374 | return error("Invalid record"); | ||||
375 | Triple = S; | ||||
376 | break; | ||||
377 | } | ||||
378 | } | ||||
379 | Record.clear(); | ||||
380 | } | ||||
381 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 381); | ||||
382 | } | ||||
383 | |||||
384 | static Expected<std::string> readTriple(BitstreamCursor &Stream) { | ||||
385 | // We expect a number of well-defined blocks, though we don't necessarily | ||||
386 | // need to understand them all. | ||||
387 | while (true) { | ||||
388 | Expected<BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
389 | if (!MaybeEntry) | ||||
390 | return MaybeEntry.takeError(); | ||||
391 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
392 | |||||
393 | switch (Entry.Kind) { | ||||
394 | case BitstreamEntry::Error: | ||||
395 | return error("Malformed block"); | ||||
396 | case BitstreamEntry::EndBlock: | ||||
397 | return ""; | ||||
398 | |||||
399 | case BitstreamEntry::SubBlock: | ||||
400 | if (Entry.ID == bitc::MODULE_BLOCK_ID) | ||||
401 | return readModuleTriple(Stream); | ||||
402 | |||||
403 | // Ignore other sub-blocks. | ||||
404 | if (Error Err = Stream.SkipBlock()) | ||||
405 | return std::move(Err); | ||||
406 | continue; | ||||
407 | |||||
408 | case BitstreamEntry::Record: | ||||
409 | if (llvm::Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID)) | ||||
410 | continue; | ||||
411 | else | ||||
412 | return Skipped.takeError(); | ||||
413 | } | ||||
414 | } | ||||
415 | } | ||||
416 | |||||
417 | namespace { | ||||
418 | |||||
419 | class BitcodeReaderBase { | ||||
420 | protected: | ||||
421 | BitcodeReaderBase(BitstreamCursor Stream, StringRef Strtab) | ||||
422 | : Stream(std::move(Stream)), Strtab(Strtab) { | ||||
423 | this->Stream.setBlockInfo(&BlockInfo); | ||||
424 | } | ||||
425 | |||||
426 | BitstreamBlockInfo BlockInfo; | ||||
427 | BitstreamCursor Stream; | ||||
428 | StringRef Strtab; | ||||
429 | |||||
430 | /// In version 2 of the bitcode we store names of global values and comdats in | ||||
431 | /// a string table rather than in the VST. | ||||
432 | bool UseStrtab = false; | ||||
433 | |||||
434 | Expected<unsigned> parseVersionRecord(ArrayRef<uint64_t> Record); | ||||
435 | |||||
436 | /// If this module uses a string table, pop the reference to the string table | ||||
437 | /// and return the referenced string and the rest of the record. Otherwise | ||||
438 | /// just return the record itself. | ||||
439 | std::pair<StringRef, ArrayRef<uint64_t>> | ||||
440 | readNameFromStrtab(ArrayRef<uint64_t> Record); | ||||
441 | |||||
442 | bool readBlockInfo(); | ||||
443 | |||||
444 | // Contains an arbitrary and optional string identifying the bitcode producer | ||||
445 | std::string ProducerIdentification; | ||||
446 | |||||
447 | Error error(const Twine &Message); | ||||
448 | }; | ||||
449 | |||||
450 | } // end anonymous namespace | ||||
451 | |||||
452 | Error BitcodeReaderBase::error(const Twine &Message) { | ||||
453 | std::string FullMsg = Message.str(); | ||||
454 | if (!ProducerIdentification.empty()) | ||||
455 | FullMsg += " (Producer: '" + ProducerIdentification + "' Reader: 'LLVM " + | ||||
456 | LLVM_VERSION_STRING"10.0.0" "')"; | ||||
457 | return ::error(FullMsg); | ||||
458 | } | ||||
459 | |||||
460 | Expected<unsigned> | ||||
461 | BitcodeReaderBase::parseVersionRecord(ArrayRef<uint64_t> Record) { | ||||
462 | if (Record.empty()) | ||||
463 | return error("Invalid record"); | ||||
464 | unsigned ModuleVersion = Record[0]; | ||||
465 | if (ModuleVersion > 2) | ||||
466 | return error("Invalid value"); | ||||
467 | UseStrtab = ModuleVersion >= 2; | ||||
468 | return ModuleVersion; | ||||
469 | } | ||||
470 | |||||
471 | std::pair<StringRef, ArrayRef<uint64_t>> | ||||
472 | BitcodeReaderBase::readNameFromStrtab(ArrayRef<uint64_t> Record) { | ||||
473 | if (!UseStrtab) | ||||
474 | return {"", Record}; | ||||
475 | // Invalid reference. Let the caller complain about the record being empty. | ||||
476 | if (Record[0] + Record[1] > Strtab.size()) | ||||
477 | return {"", {}}; | ||||
478 | return {StringRef(Strtab.data() + Record[0], Record[1]), Record.slice(2)}; | ||||
479 | } | ||||
480 | |||||
481 | namespace { | ||||
482 | |||||
483 | class BitcodeReader : public BitcodeReaderBase, public GVMaterializer { | ||||
484 | LLVMContext &Context; | ||||
485 | Module *TheModule = nullptr; | ||||
486 | // Next offset to start scanning for lazy parsing of function bodies. | ||||
487 | uint64_t NextUnreadBit = 0; | ||||
488 | // Last function offset found in the VST. | ||||
489 | uint64_t LastFunctionBlockBit = 0; | ||||
490 | bool SeenValueSymbolTable = false; | ||||
491 | uint64_t VSTOffset = 0; | ||||
492 | |||||
493 | std::vector<std::string> SectionTable; | ||||
494 | std::vector<std::string> GCTable; | ||||
495 | |||||
496 | std::vector<Type*> TypeList; | ||||
497 | DenseMap<Function *, FunctionType *> FunctionTypes; | ||||
498 | BitcodeReaderValueList ValueList; | ||||
499 | Optional<MetadataLoader> MDLoader; | ||||
500 | std::vector<Comdat *> ComdatList; | ||||
501 | SmallVector<Instruction *, 64> InstructionList; | ||||
502 | |||||
503 | std::vector<std::pair<GlobalVariable *, unsigned>> GlobalInits; | ||||
504 | std::vector<std::pair<GlobalIndirectSymbol *, unsigned>> IndirectSymbolInits; | ||||
505 | std::vector<std::pair<Function *, unsigned>> FunctionPrefixes; | ||||
506 | std::vector<std::pair<Function *, unsigned>> FunctionPrologues; | ||||
507 | std::vector<std::pair<Function *, unsigned>> FunctionPersonalityFns; | ||||
508 | |||||
509 | /// The set of attributes by index. Index zero in the file is for null, and | ||||
510 | /// is thus not represented here. As such all indices are off by one. | ||||
511 | std::vector<AttributeList> MAttributes; | ||||
512 | |||||
513 | /// The set of attribute groups. | ||||
514 | std::map<unsigned, AttributeList> MAttributeGroups; | ||||
515 | |||||
516 | /// While parsing a function body, this is a list of the basic blocks for the | ||||
517 | /// function. | ||||
518 | std::vector<BasicBlock*> FunctionBBs; | ||||
519 | |||||
520 | // When reading the module header, this list is populated with functions that | ||||
521 | // have bodies later in the file. | ||||
522 | std::vector<Function*> FunctionsWithBodies; | ||||
523 | |||||
524 | // When intrinsic functions are encountered which require upgrading they are | ||||
525 | // stored here with their replacement function. | ||||
526 | using UpdatedIntrinsicMap = DenseMap<Function *, Function *>; | ||||
527 | UpdatedIntrinsicMap UpgradedIntrinsics; | ||||
528 | // Intrinsics which were remangled because of types rename | ||||
529 | UpdatedIntrinsicMap RemangledIntrinsics; | ||||
530 | |||||
531 | // Several operations happen after the module header has been read, but | ||||
532 | // before function bodies are processed. This keeps track of whether | ||||
533 | // we've done this yet. | ||||
534 | bool SeenFirstFunctionBody = false; | ||||
535 | |||||
536 | /// When function bodies are initially scanned, this map contains info about | ||||
537 | /// where to find deferred function body in the stream. | ||||
538 | DenseMap<Function*, uint64_t> DeferredFunctionInfo; | ||||
539 | |||||
540 | /// When Metadata block is initially scanned when parsing the module, we may | ||||
541 | /// choose to defer parsing of the metadata. This vector contains info about | ||||
542 | /// which Metadata blocks are deferred. | ||||
543 | std::vector<uint64_t> DeferredMetadataInfo; | ||||
544 | |||||
545 | /// These are basic blocks forward-referenced by block addresses. They are | ||||
546 | /// inserted lazily into functions when they're loaded. The basic block ID is | ||||
547 | /// its index into the vector. | ||||
548 | DenseMap<Function *, std::vector<BasicBlock *>> BasicBlockFwdRefs; | ||||
549 | std::deque<Function *> BasicBlockFwdRefQueue; | ||||
550 | |||||
551 | /// Indicates that we are using a new encoding for instruction operands where | ||||
552 | /// most operands in the current FUNCTION_BLOCK are encoded relative to the | ||||
553 | /// instruction number, for a more compact encoding. Some instruction | ||||
554 | /// operands are not relative to the instruction ID: basic block numbers, and | ||||
555 | /// types. Once the old style function blocks have been phased out, we would | ||||
556 | /// not need this flag. | ||||
557 | bool UseRelativeIDs = false; | ||||
558 | |||||
559 | /// True if all functions will be materialized, negating the need to process | ||||
560 | /// (e.g.) blockaddress forward references. | ||||
561 | bool WillMaterializeAllForwardRefs = false; | ||||
562 | |||||
563 | bool StripDebugInfo = false; | ||||
564 | TBAAVerifier TBAAVerifyHelper; | ||||
565 | |||||
566 | std::vector<std::string> BundleTags; | ||||
567 | SmallVector<SyncScope::ID, 8> SSIDs; | ||||
568 | |||||
569 | public: | ||||
570 | BitcodeReader(BitstreamCursor Stream, StringRef Strtab, | ||||
571 | StringRef ProducerIdentification, LLVMContext &Context); | ||||
572 | |||||
573 | Error materializeForwardReferencedFunctions(); | ||||
574 | |||||
575 | Error materialize(GlobalValue *GV) override; | ||||
576 | Error materializeModule() override; | ||||
577 | std::vector<StructType *> getIdentifiedStructTypes() const override; | ||||
578 | |||||
579 | /// Main interface to parsing a bitcode buffer. | ||||
580 | /// \returns true if an error occurred. | ||||
581 | Error parseBitcodeInto(Module *M, bool ShouldLazyLoadMetadata = false, | ||||
582 | bool IsImporting = false); | ||||
583 | |||||
584 | static uint64_t decodeSignRotatedValue(uint64_t V); | ||||
585 | |||||
586 | /// Materialize any deferred Metadata block. | ||||
587 | Error materializeMetadata() override; | ||||
588 | |||||
589 | void setStripDebugInfo() override; | ||||
590 | |||||
591 | private: | ||||
592 | std::vector<StructType *> IdentifiedStructTypes; | ||||
593 | StructType *createIdentifiedStructType(LLVMContext &Context, StringRef Name); | ||||
594 | StructType *createIdentifiedStructType(LLVMContext &Context); | ||||
595 | |||||
596 | /// Map all pointer types within \param Ty to the opaque pointer | ||||
597 | /// type in the same address space if opaque pointers are being | ||||
598 | /// used, otherwise nop. This converts a bitcode-reader internal | ||||
599 | /// type into one suitable for use in a Value. | ||||
600 | Type *flattenPointerTypes(Type *Ty) { | ||||
601 | return Ty; | ||||
602 | } | ||||
603 | |||||
604 | /// Given a fully structured pointer type (i.e. not opaque), return | ||||
605 | /// the flattened form of its element, suitable for use in a Value. | ||||
606 | Type *getPointerElementFlatType(Type *Ty) { | ||||
607 | return flattenPointerTypes(cast<PointerType>(Ty)->getElementType()); | ||||
608 | } | ||||
609 | |||||
610 | /// Given a fully structured pointer type, get its element type in | ||||
611 | /// both fully structured form, and flattened form suitable for use | ||||
612 | /// in a Value. | ||||
613 | std::pair<Type *, Type *> getPointerElementTypes(Type *FullTy) { | ||||
614 | Type *ElTy = cast<PointerType>(FullTy)->getElementType(); | ||||
615 | return std::make_pair(ElTy, flattenPointerTypes(ElTy)); | ||||
616 | } | ||||
617 | |||||
618 | /// Return the flattened type (suitable for use in a Value) | ||||
619 | /// specified by the given \param ID . | ||||
620 | Type *getTypeByID(unsigned ID) { | ||||
621 | return flattenPointerTypes(getFullyStructuredTypeByID(ID)); | ||||
622 | } | ||||
623 | |||||
624 | /// Return the fully structured (bitcode-reader internal) type | ||||
625 | /// corresponding to the given \param ID . | ||||
626 | Type *getFullyStructuredTypeByID(unsigned ID); | ||||
627 | |||||
628 | Value *getFnValueByID(unsigned ID, Type *Ty, Type **FullTy = nullptr) { | ||||
629 | if (Ty && Ty->isMetadataTy()) | ||||
630 | return MetadataAsValue::get(Ty->getContext(), getFnMetadataByID(ID)); | ||||
631 | return ValueList.getValueFwdRef(ID, Ty, FullTy); | ||||
632 | } | ||||
633 | |||||
634 | Metadata *getFnMetadataByID(unsigned ID) { | ||||
635 | return MDLoader->getMetadataFwdRefOrLoad(ID); | ||||
636 | } | ||||
637 | |||||
638 | BasicBlock *getBasicBlock(unsigned ID) const { | ||||
639 | if (ID >= FunctionBBs.size()) return nullptr; // Invalid ID | ||||
640 | return FunctionBBs[ID]; | ||||
641 | } | ||||
642 | |||||
643 | AttributeList getAttributes(unsigned i) const { | ||||
644 | if (i-1 < MAttributes.size()) | ||||
645 | return MAttributes[i-1]; | ||||
646 | return AttributeList(); | ||||
647 | } | ||||
648 | |||||
649 | /// Read a value/type pair out of the specified record from slot 'Slot'. | ||||
650 | /// Increment Slot past the number of slots used in the record. Return true on | ||||
651 | /// failure. | ||||
652 | bool getValueTypePair(SmallVectorImpl<uint64_t> &Record, unsigned &Slot, | ||||
653 | unsigned InstNum, Value *&ResVal, | ||||
654 | Type **FullTy = nullptr) { | ||||
655 | if (Slot == Record.size()) return true; | ||||
656 | unsigned ValNo = (unsigned)Record[Slot++]; | ||||
657 | // Adjust the ValNo, if it was encoded relative to the InstNum. | ||||
658 | if (UseRelativeIDs) | ||||
659 | ValNo = InstNum - ValNo; | ||||
660 | if (ValNo < InstNum) { | ||||
661 | // If this is not a forward reference, just return the value we already | ||||
662 | // have. | ||||
663 | ResVal = getFnValueByID(ValNo, nullptr, FullTy); | ||||
664 | return ResVal == nullptr; | ||||
665 | } | ||||
666 | if (Slot == Record.size()) | ||||
667 | return true; | ||||
668 | |||||
669 | unsigned TypeNo = (unsigned)Record[Slot++]; | ||||
670 | ResVal = getFnValueByID(ValNo, getTypeByID(TypeNo)); | ||||
671 | if (FullTy
| ||||
672 | *FullTy = getFullyStructuredTypeByID(TypeNo); | ||||
673 | return ResVal == nullptr; | ||||
674 | } | ||||
675 | |||||
676 | /// Read a value out of the specified record from slot 'Slot'. Increment Slot | ||||
677 | /// past the number of slots used by the value in the record. Return true if | ||||
678 | /// there is an error. | ||||
679 | bool popValue(SmallVectorImpl<uint64_t> &Record, unsigned &Slot, | ||||
680 | unsigned InstNum, Type *Ty, Value *&ResVal) { | ||||
681 | if (getValue(Record, Slot, InstNum, Ty, ResVal)) | ||||
682 | return true; | ||||
683 | // All values currently take a single record slot. | ||||
684 | ++Slot; | ||||
685 | return false; | ||||
686 | } | ||||
687 | |||||
688 | /// Like popValue, but does not increment the Slot number. | ||||
689 | bool getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot, | ||||
690 | unsigned InstNum, Type *Ty, Value *&ResVal) { | ||||
691 | ResVal = getValue(Record, Slot, InstNum, Ty); | ||||
692 | return ResVal == nullptr; | ||||
693 | } | ||||
694 | |||||
695 | /// Version of getValue that returns ResVal directly, or 0 if there is an | ||||
696 | /// error. | ||||
697 | Value *getValue(SmallVectorImpl<uint64_t> &Record, unsigned Slot, | ||||
698 | unsigned InstNum, Type *Ty) { | ||||
699 | if (Slot == Record.size()) return nullptr; | ||||
700 | unsigned ValNo = (unsigned)Record[Slot]; | ||||
701 | // Adjust the ValNo, if it was encoded relative to the InstNum. | ||||
702 | if (UseRelativeIDs) | ||||
703 | ValNo = InstNum - ValNo; | ||||
704 | return getFnValueByID(ValNo, Ty); | ||||
705 | } | ||||
706 | |||||
707 | /// Like getValue, but decodes signed VBRs. | ||||
708 | Value *getValueSigned(SmallVectorImpl<uint64_t> &Record, unsigned Slot, | ||||
709 | unsigned InstNum, Type *Ty) { | ||||
710 | if (Slot == Record.size()) return nullptr; | ||||
711 | unsigned ValNo = (unsigned)decodeSignRotatedValue(Record[Slot]); | ||||
712 | // Adjust the ValNo, if it was encoded relative to the InstNum. | ||||
713 | if (UseRelativeIDs) | ||||
714 | ValNo = InstNum - ValNo; | ||||
715 | return getFnValueByID(ValNo, Ty); | ||||
716 | } | ||||
717 | |||||
718 | /// Upgrades old-style typeless byval attributes by adding the corresponding | ||||
719 | /// argument's pointee type. | ||||
720 | void propagateByValTypes(CallBase *CB, ArrayRef<Type *> ArgsFullTys); | ||||
721 | |||||
722 | /// Converts alignment exponent (i.e. power of two (or zero)) to the | ||||
723 | /// corresponding alignment to use. If alignment is too large, returns | ||||
724 | /// a corresponding error code. | ||||
725 | Error parseAlignmentValue(uint64_t Exponent, MaybeAlign &Alignment); | ||||
726 | Error parseAttrKind(uint64_t Code, Attribute::AttrKind *Kind); | ||||
727 | Error parseModule(uint64_t ResumeBit, bool ShouldLazyLoadMetadata = false); | ||||
728 | |||||
729 | Error parseComdatRecord(ArrayRef<uint64_t> Record); | ||||
730 | Error parseGlobalVarRecord(ArrayRef<uint64_t> Record); | ||||
731 | Error parseFunctionRecord(ArrayRef<uint64_t> Record); | ||||
732 | Error parseGlobalIndirectSymbolRecord(unsigned BitCode, | ||||
733 | ArrayRef<uint64_t> Record); | ||||
734 | |||||
735 | Error parseAttributeBlock(); | ||||
736 | Error parseAttributeGroupBlock(); | ||||
737 | Error parseTypeTable(); | ||||
738 | Error parseTypeTableBody(); | ||||
739 | Error parseOperandBundleTags(); | ||||
740 | Error parseSyncScopeNames(); | ||||
741 | |||||
742 | Expected<Value *> recordValue(SmallVectorImpl<uint64_t> &Record, | ||||
743 | unsigned NameIndex, Triple &TT); | ||||
744 | void setDeferredFunctionInfo(unsigned FuncBitcodeOffsetDelta, Function *F, | ||||
745 | ArrayRef<uint64_t> Record); | ||||
746 | Error parseValueSymbolTable(uint64_t Offset = 0); | ||||
747 | Error parseGlobalValueSymbolTable(); | ||||
748 | Error parseConstants(); | ||||
749 | Error rememberAndSkipFunctionBodies(); | ||||
750 | Error rememberAndSkipFunctionBody(); | ||||
751 | /// Save the positions of the Metadata blocks and skip parsing the blocks. | ||||
752 | Error rememberAndSkipMetadata(); | ||||
753 | Error typeCheckLoadStoreInst(Type *ValType, Type *PtrType); | ||||
754 | Error parseFunctionBody(Function *F); | ||||
755 | Error globalCleanup(); | ||||
756 | Error resolveGlobalAndIndirectSymbolInits(); | ||||
757 | Error parseUseLists(); | ||||
758 | Error findFunctionInStream( | ||||
759 | Function *F, | ||||
760 | DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator); | ||||
761 | |||||
762 | SyncScope::ID getDecodedSyncScopeID(unsigned Val); | ||||
763 | }; | ||||
764 | |||||
765 | /// Class to manage reading and parsing function summary index bitcode | ||||
766 | /// files/sections. | ||||
767 | class ModuleSummaryIndexBitcodeReader : public BitcodeReaderBase { | ||||
768 | /// The module index built during parsing. | ||||
769 | ModuleSummaryIndex &TheIndex; | ||||
770 | |||||
771 | /// Indicates whether we have encountered a global value summary section | ||||
772 | /// yet during parsing. | ||||
773 | bool SeenGlobalValSummary = false; | ||||
774 | |||||
775 | /// Indicates whether we have already parsed the VST, used for error checking. | ||||
776 | bool SeenValueSymbolTable = false; | ||||
777 | |||||
778 | /// Set to the offset of the VST recorded in the MODULE_CODE_VSTOFFSET record. | ||||
779 | /// Used to enable on-demand parsing of the VST. | ||||
780 | uint64_t VSTOffset = 0; | ||||
781 | |||||
782 | // Map to save ValueId to ValueInfo association that was recorded in the | ||||
783 | // ValueSymbolTable. It is used after the VST is parsed to convert | ||||
784 | // call graph edges read from the function summary from referencing | ||||
785 | // callees by their ValueId to using the ValueInfo instead, which is how | ||||
786 | // they are recorded in the summary index being built. | ||||
787 | // We save a GUID which refers to the same global as the ValueInfo, but | ||||
788 | // ignoring the linkage, i.e. for values other than local linkage they are | ||||
789 | // identical. | ||||
790 | DenseMap<unsigned, std::pair<ValueInfo, GlobalValue::GUID>> | ||||
791 | ValueIdToValueInfoMap; | ||||
792 | |||||
793 | /// Map populated during module path string table parsing, from the | ||||
794 | /// module ID to a string reference owned by the index's module | ||||
795 | /// path string table, used to correlate with combined index | ||||
796 | /// summary records. | ||||
797 | DenseMap<uint64_t, StringRef> ModuleIdMap; | ||||
798 | |||||
799 | /// Original source file name recorded in a bitcode record. | ||||
800 | std::string SourceFileName; | ||||
801 | |||||
802 | /// The string identifier given to this module by the client, normally the | ||||
803 | /// path to the bitcode file. | ||||
804 | StringRef ModulePath; | ||||
805 | |||||
806 | /// For per-module summary indexes, the unique numerical identifier given to | ||||
807 | /// this module by the client. | ||||
808 | unsigned ModuleId; | ||||
809 | |||||
810 | public: | ||||
811 | ModuleSummaryIndexBitcodeReader(BitstreamCursor Stream, StringRef Strtab, | ||||
812 | ModuleSummaryIndex &TheIndex, | ||||
813 | StringRef ModulePath, unsigned ModuleId); | ||||
814 | |||||
815 | Error parseModule(); | ||||
816 | |||||
817 | private: | ||||
818 | void setValueGUID(uint64_t ValueID, StringRef ValueName, | ||||
819 | GlobalValue::LinkageTypes Linkage, | ||||
820 | StringRef SourceFileName); | ||||
821 | Error parseValueSymbolTable( | ||||
822 | uint64_t Offset, | ||||
823 | DenseMap<unsigned, GlobalValue::LinkageTypes> &ValueIdToLinkageMap); | ||||
824 | std::vector<ValueInfo> makeRefList(ArrayRef<uint64_t> Record); | ||||
825 | std::vector<FunctionSummary::EdgeTy> makeCallList(ArrayRef<uint64_t> Record, | ||||
826 | bool IsOldProfileFormat, | ||||
827 | bool HasProfile, | ||||
828 | bool HasRelBF); | ||||
829 | Error parseEntireSummary(unsigned ID); | ||||
830 | Error parseModuleStringTable(); | ||||
831 | void parseTypeIdCompatibleVtableSummaryRecord(ArrayRef<uint64_t> Record); | ||||
832 | void parseTypeIdCompatibleVtableInfo(ArrayRef<uint64_t> Record, size_t &Slot, | ||||
833 | TypeIdCompatibleVtableInfo &TypeId); | ||||
834 | |||||
835 | std::pair<ValueInfo, GlobalValue::GUID> | ||||
836 | getValueInfoFromValueId(unsigned ValueId); | ||||
837 | |||||
838 | void addThisModule(); | ||||
839 | ModuleSummaryIndex::ModuleInfo *getThisModule(); | ||||
840 | }; | ||||
841 | |||||
842 | } // end anonymous namespace | ||||
843 | |||||
844 | std::error_code llvm::errorToErrorCodeAndEmitErrors(LLVMContext &Ctx, | ||||
845 | Error Err) { | ||||
846 | if (Err) { | ||||
847 | std::error_code EC; | ||||
848 | handleAllErrors(std::move(Err), [&](ErrorInfoBase &EIB) { | ||||
849 | EC = EIB.convertToErrorCode(); | ||||
850 | Ctx.emitError(EIB.message()); | ||||
851 | }); | ||||
852 | return EC; | ||||
853 | } | ||||
854 | return std::error_code(); | ||||
855 | } | ||||
856 | |||||
857 | BitcodeReader::BitcodeReader(BitstreamCursor Stream, StringRef Strtab, | ||||
858 | StringRef ProducerIdentification, | ||||
859 | LLVMContext &Context) | ||||
860 | : BitcodeReaderBase(std::move(Stream), Strtab), Context(Context), | ||||
861 | ValueList(Context, Stream.SizeInBytes()) { | ||||
862 | this->ProducerIdentification = ProducerIdentification; | ||||
863 | } | ||||
864 | |||||
865 | Error BitcodeReader::materializeForwardReferencedFunctions() { | ||||
866 | if (WillMaterializeAllForwardRefs) | ||||
867 | return Error::success(); | ||||
868 | |||||
869 | // Prevent recursion. | ||||
870 | WillMaterializeAllForwardRefs = true; | ||||
871 | |||||
872 | while (!BasicBlockFwdRefQueue.empty()) { | ||||
873 | Function *F = BasicBlockFwdRefQueue.front(); | ||||
874 | BasicBlockFwdRefQueue.pop_front(); | ||||
875 | assert(F && "Expected valid function")((F && "Expected valid function") ? static_cast<void > (0) : __assert_fail ("F && \"Expected valid function\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 875, __PRETTY_FUNCTION__)); | ||||
876 | if (!BasicBlockFwdRefs.count(F)) | ||||
877 | // Already materialized. | ||||
878 | continue; | ||||
879 | |||||
880 | // Check for a function that isn't materializable to prevent an infinite | ||||
881 | // loop. When parsing a blockaddress stored in a global variable, there | ||||
882 | // isn't a trivial way to check if a function will have a body without a | ||||
883 | // linear search through FunctionsWithBodies, so just check it here. | ||||
884 | if (!F->isMaterializable()) | ||||
885 | return error("Never resolved function from blockaddress"); | ||||
886 | |||||
887 | // Try to materialize F. | ||||
888 | if (Error Err = materialize(F)) | ||||
889 | return Err; | ||||
890 | } | ||||
891 | assert(BasicBlockFwdRefs.empty() && "Function missing from queue")((BasicBlockFwdRefs.empty() && "Function missing from queue" ) ? static_cast<void> (0) : __assert_fail ("BasicBlockFwdRefs.empty() && \"Function missing from queue\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 891, __PRETTY_FUNCTION__)); | ||||
892 | |||||
893 | // Reset state. | ||||
894 | WillMaterializeAllForwardRefs = false; | ||||
895 | return Error::success(); | ||||
896 | } | ||||
897 | |||||
898 | //===----------------------------------------------------------------------===// | ||||
899 | // Helper functions to implement forward reference resolution, etc. | ||||
900 | //===----------------------------------------------------------------------===// | ||||
901 | |||||
902 | static bool hasImplicitComdat(size_t Val) { | ||||
903 | switch (Val) { | ||||
904 | default: | ||||
905 | return false; | ||||
906 | case 1: // Old WeakAnyLinkage | ||||
907 | case 4: // Old LinkOnceAnyLinkage | ||||
908 | case 10: // Old WeakODRLinkage | ||||
909 | case 11: // Old LinkOnceODRLinkage | ||||
910 | return true; | ||||
911 | } | ||||
912 | } | ||||
913 | |||||
914 | static GlobalValue::LinkageTypes getDecodedLinkage(unsigned Val) { | ||||
915 | switch (Val) { | ||||
916 | default: // Map unknown/new linkages to external | ||||
917 | case 0: | ||||
918 | return GlobalValue::ExternalLinkage; | ||||
919 | case 2: | ||||
920 | return GlobalValue::AppendingLinkage; | ||||
921 | case 3: | ||||
922 | return GlobalValue::InternalLinkage; | ||||
923 | case 5: | ||||
924 | return GlobalValue::ExternalLinkage; // Obsolete DLLImportLinkage | ||||
925 | case 6: | ||||
926 | return GlobalValue::ExternalLinkage; // Obsolete DLLExportLinkage | ||||
927 | case 7: | ||||
928 | return GlobalValue::ExternalWeakLinkage; | ||||
929 | case 8: | ||||
930 | return GlobalValue::CommonLinkage; | ||||
931 | case 9: | ||||
932 | return GlobalValue::PrivateLinkage; | ||||
933 | case 12: | ||||
934 | return GlobalValue::AvailableExternallyLinkage; | ||||
935 | case 13: | ||||
936 | return GlobalValue::PrivateLinkage; // Obsolete LinkerPrivateLinkage | ||||
937 | case 14: | ||||
938 | return GlobalValue::PrivateLinkage; // Obsolete LinkerPrivateWeakLinkage | ||||
939 | case 15: | ||||
940 | return GlobalValue::ExternalLinkage; // Obsolete LinkOnceODRAutoHideLinkage | ||||
941 | case 1: // Old value with implicit comdat. | ||||
942 | case 16: | ||||
943 | return GlobalValue::WeakAnyLinkage; | ||||
944 | case 10: // Old value with implicit comdat. | ||||
945 | case 17: | ||||
946 | return GlobalValue::WeakODRLinkage; | ||||
947 | case 4: // Old value with implicit comdat. | ||||
948 | case 18: | ||||
949 | return GlobalValue::LinkOnceAnyLinkage; | ||||
950 | case 11: // Old value with implicit comdat. | ||||
951 | case 19: | ||||
952 | return GlobalValue::LinkOnceODRLinkage; | ||||
953 | } | ||||
954 | } | ||||
955 | |||||
956 | static FunctionSummary::FFlags getDecodedFFlags(uint64_t RawFlags) { | ||||
957 | FunctionSummary::FFlags Flags; | ||||
958 | Flags.ReadNone = RawFlags & 0x1; | ||||
959 | Flags.ReadOnly = (RawFlags >> 1) & 0x1; | ||||
960 | Flags.NoRecurse = (RawFlags >> 2) & 0x1; | ||||
961 | Flags.ReturnDoesNotAlias = (RawFlags >> 3) & 0x1; | ||||
962 | Flags.NoInline = (RawFlags >> 4) & 0x1; | ||||
963 | Flags.AlwaysInline = (RawFlags >> 5) & 0x1; | ||||
964 | return Flags; | ||||
965 | } | ||||
966 | |||||
967 | /// Decode the flags for GlobalValue in the summary. | ||||
968 | static GlobalValueSummary::GVFlags getDecodedGVSummaryFlags(uint64_t RawFlags, | ||||
969 | uint64_t Version) { | ||||
970 | // Summary were not emitted before LLVM 3.9, we don't need to upgrade Linkage | ||||
971 | // like getDecodedLinkage() above. Any future change to the linkage enum and | ||||
972 | // to getDecodedLinkage() will need to be taken into account here as above. | ||||
973 | auto Linkage = GlobalValue::LinkageTypes(RawFlags & 0xF); // 4 bits | ||||
974 | RawFlags = RawFlags >> 4; | ||||
975 | bool NotEligibleToImport = (RawFlags & 0x1) || Version < 3; | ||||
976 | // The Live flag wasn't introduced until version 3. For dead stripping | ||||
977 | // to work correctly on earlier versions, we must conservatively treat all | ||||
978 | // values as live. | ||||
979 | bool Live = (RawFlags & 0x2) || Version < 3; | ||||
980 | bool Local = (RawFlags & 0x4); | ||||
981 | bool AutoHide = (RawFlags & 0x8); | ||||
982 | |||||
983 | return GlobalValueSummary::GVFlags(Linkage, NotEligibleToImport, Live, Local, AutoHide); | ||||
984 | } | ||||
985 | |||||
986 | // Decode the flags for GlobalVariable in the summary | ||||
987 | static GlobalVarSummary::GVarFlags getDecodedGVarFlags(uint64_t RawFlags) { | ||||
988 | return GlobalVarSummary::GVarFlags((RawFlags & 0x1) ? true : false, | ||||
989 | (RawFlags & 0x2) ? true : false); | ||||
990 | } | ||||
991 | |||||
992 | static GlobalValue::VisibilityTypes getDecodedVisibility(unsigned Val) { | ||||
993 | switch (Val) { | ||||
994 | default: // Map unknown visibilities to default. | ||||
995 | case 0: return GlobalValue::DefaultVisibility; | ||||
996 | case 1: return GlobalValue::HiddenVisibility; | ||||
997 | case 2: return GlobalValue::ProtectedVisibility; | ||||
998 | } | ||||
999 | } | ||||
1000 | |||||
1001 | static GlobalValue::DLLStorageClassTypes | ||||
1002 | getDecodedDLLStorageClass(unsigned Val) { | ||||
1003 | switch (Val) { | ||||
1004 | default: // Map unknown values to default. | ||||
1005 | case 0: return GlobalValue::DefaultStorageClass; | ||||
1006 | case 1: return GlobalValue::DLLImportStorageClass; | ||||
1007 | case 2: return GlobalValue::DLLExportStorageClass; | ||||
1008 | } | ||||
1009 | } | ||||
1010 | |||||
1011 | static bool getDecodedDSOLocal(unsigned Val) { | ||||
1012 | switch(Val) { | ||||
1013 | default: // Map unknown values to preemptable. | ||||
1014 | case 0: return false; | ||||
1015 | case 1: return true; | ||||
1016 | } | ||||
1017 | } | ||||
1018 | |||||
1019 | static GlobalVariable::ThreadLocalMode getDecodedThreadLocalMode(unsigned Val) { | ||||
1020 | switch (Val) { | ||||
1021 | case 0: return GlobalVariable::NotThreadLocal; | ||||
1022 | default: // Map unknown non-zero value to general dynamic. | ||||
1023 | case 1: return GlobalVariable::GeneralDynamicTLSModel; | ||||
1024 | case 2: return GlobalVariable::LocalDynamicTLSModel; | ||||
1025 | case 3: return GlobalVariable::InitialExecTLSModel; | ||||
1026 | case 4: return GlobalVariable::LocalExecTLSModel; | ||||
1027 | } | ||||
1028 | } | ||||
1029 | |||||
1030 | static GlobalVariable::UnnamedAddr getDecodedUnnamedAddrType(unsigned Val) { | ||||
1031 | switch (Val) { | ||||
1032 | default: // Map unknown to UnnamedAddr::None. | ||||
1033 | case 0: return GlobalVariable::UnnamedAddr::None; | ||||
1034 | case 1: return GlobalVariable::UnnamedAddr::Global; | ||||
1035 | case 2: return GlobalVariable::UnnamedAddr::Local; | ||||
1036 | } | ||||
1037 | } | ||||
1038 | |||||
1039 | static int getDecodedCastOpcode(unsigned Val) { | ||||
1040 | switch (Val) { | ||||
1041 | default: return -1; | ||||
1042 | case bitc::CAST_TRUNC : return Instruction::Trunc; | ||||
1043 | case bitc::CAST_ZEXT : return Instruction::ZExt; | ||||
1044 | case bitc::CAST_SEXT : return Instruction::SExt; | ||||
1045 | case bitc::CAST_FPTOUI : return Instruction::FPToUI; | ||||
1046 | case bitc::CAST_FPTOSI : return Instruction::FPToSI; | ||||
1047 | case bitc::CAST_UITOFP : return Instruction::UIToFP; | ||||
1048 | case bitc::CAST_SITOFP : return Instruction::SIToFP; | ||||
1049 | case bitc::CAST_FPTRUNC : return Instruction::FPTrunc; | ||||
1050 | case bitc::CAST_FPEXT : return Instruction::FPExt; | ||||
1051 | case bitc::CAST_PTRTOINT: return Instruction::PtrToInt; | ||||
1052 | case bitc::CAST_INTTOPTR: return Instruction::IntToPtr; | ||||
1053 | case bitc::CAST_BITCAST : return Instruction::BitCast; | ||||
1054 | case bitc::CAST_ADDRSPACECAST: return Instruction::AddrSpaceCast; | ||||
1055 | } | ||||
1056 | } | ||||
1057 | |||||
1058 | static int getDecodedUnaryOpcode(unsigned Val, Type *Ty) { | ||||
1059 | bool IsFP = Ty->isFPOrFPVectorTy(); | ||||
1060 | // UnOps are only valid for int/fp or vector of int/fp types | ||||
1061 | if (!IsFP && !Ty->isIntOrIntVectorTy()) | ||||
1062 | return -1; | ||||
1063 | |||||
1064 | switch (Val) { | ||||
1065 | default: | ||||
1066 | return -1; | ||||
1067 | case bitc::UNOP_FNEG: | ||||
1068 | return IsFP ? Instruction::FNeg : -1; | ||||
1069 | } | ||||
1070 | } | ||||
1071 | |||||
1072 | static int getDecodedBinaryOpcode(unsigned Val, Type *Ty) { | ||||
1073 | bool IsFP = Ty->isFPOrFPVectorTy(); | ||||
1074 | // BinOps are only valid for int/fp or vector of int/fp types | ||||
1075 | if (!IsFP && !Ty->isIntOrIntVectorTy()) | ||||
1076 | return -1; | ||||
1077 | |||||
1078 | switch (Val) { | ||||
1079 | default: | ||||
1080 | return -1; | ||||
1081 | case bitc::BINOP_ADD: | ||||
1082 | return IsFP ? Instruction::FAdd : Instruction::Add; | ||||
1083 | case bitc::BINOP_SUB: | ||||
1084 | return IsFP ? Instruction::FSub : Instruction::Sub; | ||||
1085 | case bitc::BINOP_MUL: | ||||
1086 | return IsFP ? Instruction::FMul : Instruction::Mul; | ||||
1087 | case bitc::BINOP_UDIV: | ||||
1088 | return IsFP ? -1 : Instruction::UDiv; | ||||
1089 | case bitc::BINOP_SDIV: | ||||
1090 | return IsFP ? Instruction::FDiv : Instruction::SDiv; | ||||
1091 | case bitc::BINOP_UREM: | ||||
1092 | return IsFP ? -1 : Instruction::URem; | ||||
1093 | case bitc::BINOP_SREM: | ||||
1094 | return IsFP ? Instruction::FRem : Instruction::SRem; | ||||
1095 | case bitc::BINOP_SHL: | ||||
1096 | return IsFP ? -1 : Instruction::Shl; | ||||
1097 | case bitc::BINOP_LSHR: | ||||
1098 | return IsFP ? -1 : Instruction::LShr; | ||||
1099 | case bitc::BINOP_ASHR: | ||||
1100 | return IsFP ? -1 : Instruction::AShr; | ||||
1101 | case bitc::BINOP_AND: | ||||
1102 | return IsFP ? -1 : Instruction::And; | ||||
1103 | case bitc::BINOP_OR: | ||||
1104 | return IsFP ? -1 : Instruction::Or; | ||||
1105 | case bitc::BINOP_XOR: | ||||
1106 | return IsFP ? -1 : Instruction::Xor; | ||||
1107 | } | ||||
1108 | } | ||||
1109 | |||||
1110 | static AtomicRMWInst::BinOp getDecodedRMWOperation(unsigned Val) { | ||||
1111 | switch (Val) { | ||||
1112 | default: return AtomicRMWInst::BAD_BINOP; | ||||
1113 | case bitc::RMW_XCHG: return AtomicRMWInst::Xchg; | ||||
1114 | case bitc::RMW_ADD: return AtomicRMWInst::Add; | ||||
1115 | case bitc::RMW_SUB: return AtomicRMWInst::Sub; | ||||
1116 | case bitc::RMW_AND: return AtomicRMWInst::And; | ||||
1117 | case bitc::RMW_NAND: return AtomicRMWInst::Nand; | ||||
1118 | case bitc::RMW_OR: return AtomicRMWInst::Or; | ||||
1119 | case bitc::RMW_XOR: return AtomicRMWInst::Xor; | ||||
1120 | case bitc::RMW_MAX: return AtomicRMWInst::Max; | ||||
1121 | case bitc::RMW_MIN: return AtomicRMWInst::Min; | ||||
1122 | case bitc::RMW_UMAX: return AtomicRMWInst::UMax; | ||||
1123 | case bitc::RMW_UMIN: return AtomicRMWInst::UMin; | ||||
1124 | case bitc::RMW_FADD: return AtomicRMWInst::FAdd; | ||||
1125 | case bitc::RMW_FSUB: return AtomicRMWInst::FSub; | ||||
1126 | } | ||||
1127 | } | ||||
1128 | |||||
1129 | static AtomicOrdering getDecodedOrdering(unsigned Val) { | ||||
1130 | switch (Val) { | ||||
1131 | case bitc::ORDERING_NOTATOMIC: return AtomicOrdering::NotAtomic; | ||||
1132 | case bitc::ORDERING_UNORDERED: return AtomicOrdering::Unordered; | ||||
1133 | case bitc::ORDERING_MONOTONIC: return AtomicOrdering::Monotonic; | ||||
1134 | case bitc::ORDERING_ACQUIRE: return AtomicOrdering::Acquire; | ||||
1135 | case bitc::ORDERING_RELEASE: return AtomicOrdering::Release; | ||||
1136 | case bitc::ORDERING_ACQREL: return AtomicOrdering::AcquireRelease; | ||||
1137 | default: // Map unknown orderings to sequentially-consistent. | ||||
1138 | case bitc::ORDERING_SEQCST: return AtomicOrdering::SequentiallyConsistent; | ||||
1139 | } | ||||
1140 | } | ||||
1141 | |||||
1142 | static Comdat::SelectionKind getDecodedComdatSelectionKind(unsigned Val) { | ||||
1143 | switch (Val) { | ||||
1144 | default: // Map unknown selection kinds to any. | ||||
1145 | case bitc::COMDAT_SELECTION_KIND_ANY: | ||||
1146 | return Comdat::Any; | ||||
1147 | case bitc::COMDAT_SELECTION_KIND_EXACT_MATCH: | ||||
1148 | return Comdat::ExactMatch; | ||||
1149 | case bitc::COMDAT_SELECTION_KIND_LARGEST: | ||||
1150 | return Comdat::Largest; | ||||
1151 | case bitc::COMDAT_SELECTION_KIND_NO_DUPLICATES: | ||||
1152 | return Comdat::NoDuplicates; | ||||
1153 | case bitc::COMDAT_SELECTION_KIND_SAME_SIZE: | ||||
1154 | return Comdat::SameSize; | ||||
1155 | } | ||||
1156 | } | ||||
1157 | |||||
1158 | static FastMathFlags getDecodedFastMathFlags(unsigned Val) { | ||||
1159 | FastMathFlags FMF; | ||||
1160 | if (0 != (Val & bitc::UnsafeAlgebra)) | ||||
1161 | FMF.setFast(); | ||||
1162 | if (0 != (Val & bitc::AllowReassoc)) | ||||
1163 | FMF.setAllowReassoc(); | ||||
1164 | if (0 != (Val & bitc::NoNaNs)) | ||||
1165 | FMF.setNoNaNs(); | ||||
1166 | if (0 != (Val & bitc::NoInfs)) | ||||
1167 | FMF.setNoInfs(); | ||||
1168 | if (0 != (Val & bitc::NoSignedZeros)) | ||||
1169 | FMF.setNoSignedZeros(); | ||||
1170 | if (0 != (Val & bitc::AllowReciprocal)) | ||||
1171 | FMF.setAllowReciprocal(); | ||||
1172 | if (0 != (Val & bitc::AllowContract)) | ||||
1173 | FMF.setAllowContract(true); | ||||
1174 | if (0 != (Val & bitc::ApproxFunc)) | ||||
1175 | FMF.setApproxFunc(); | ||||
1176 | return FMF; | ||||
1177 | } | ||||
1178 | |||||
1179 | static void upgradeDLLImportExportLinkage(GlobalValue *GV, unsigned Val) { | ||||
1180 | switch (Val) { | ||||
1181 | case 5: GV->setDLLStorageClass(GlobalValue::DLLImportStorageClass); break; | ||||
1182 | case 6: GV->setDLLStorageClass(GlobalValue::DLLExportStorageClass); break; | ||||
1183 | } | ||||
1184 | } | ||||
1185 | |||||
1186 | Type *BitcodeReader::getFullyStructuredTypeByID(unsigned ID) { | ||||
1187 | // The type table size is always specified correctly. | ||||
1188 | if (ID >= TypeList.size()) | ||||
1189 | return nullptr; | ||||
1190 | |||||
1191 | if (Type *Ty = TypeList[ID]) | ||||
1192 | return Ty; | ||||
1193 | |||||
1194 | // If we have a forward reference, the only possible case is when it is to a | ||||
1195 | // named struct. Just create a placeholder for now. | ||||
1196 | return TypeList[ID] = createIdentifiedStructType(Context); | ||||
1197 | } | ||||
1198 | |||||
1199 | StructType *BitcodeReader::createIdentifiedStructType(LLVMContext &Context, | ||||
1200 | StringRef Name) { | ||||
1201 | auto *Ret = StructType::create(Context, Name); | ||||
1202 | IdentifiedStructTypes.push_back(Ret); | ||||
1203 | return Ret; | ||||
1204 | } | ||||
1205 | |||||
1206 | StructType *BitcodeReader::createIdentifiedStructType(LLVMContext &Context) { | ||||
1207 | auto *Ret = StructType::create(Context); | ||||
1208 | IdentifiedStructTypes.push_back(Ret); | ||||
1209 | return Ret; | ||||
1210 | } | ||||
1211 | |||||
1212 | //===----------------------------------------------------------------------===// | ||||
1213 | // Functions for parsing blocks from the bitcode file | ||||
1214 | //===----------------------------------------------------------------------===// | ||||
1215 | |||||
1216 | static uint64_t getRawAttributeMask(Attribute::AttrKind Val) { | ||||
1217 | switch (Val) { | ||||
1218 | case Attribute::EndAttrKinds: | ||||
1219 | llvm_unreachable("Synthetic enumerators which should never get here")::llvm::llvm_unreachable_internal("Synthetic enumerators which should never get here" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1219); | ||||
1220 | |||||
1221 | case Attribute::None: return 0; | ||||
1222 | case Attribute::ZExt: return 1 << 0; | ||||
1223 | case Attribute::SExt: return 1 << 1; | ||||
1224 | case Attribute::NoReturn: return 1 << 2; | ||||
1225 | case Attribute::InReg: return 1 << 3; | ||||
1226 | case Attribute::StructRet: return 1 << 4; | ||||
1227 | case Attribute::NoUnwind: return 1 << 5; | ||||
1228 | case Attribute::NoAlias: return 1 << 6; | ||||
1229 | case Attribute::ByVal: return 1 << 7; | ||||
1230 | case Attribute::Nest: return 1 << 8; | ||||
1231 | case Attribute::ReadNone: return 1 << 9; | ||||
1232 | case Attribute::ReadOnly: return 1 << 10; | ||||
1233 | case Attribute::NoInline: return 1 << 11; | ||||
1234 | case Attribute::AlwaysInline: return 1 << 12; | ||||
1235 | case Attribute::OptimizeForSize: return 1 << 13; | ||||
1236 | case Attribute::StackProtect: return 1 << 14; | ||||
1237 | case Attribute::StackProtectReq: return 1 << 15; | ||||
1238 | case Attribute::Alignment: return 31 << 16; | ||||
1239 | case Attribute::NoCapture: return 1 << 21; | ||||
1240 | case Attribute::NoRedZone: return 1 << 22; | ||||
1241 | case Attribute::NoImplicitFloat: return 1 << 23; | ||||
1242 | case Attribute::Naked: return 1 << 24; | ||||
1243 | case Attribute::InlineHint: return 1 << 25; | ||||
1244 | case Attribute::StackAlignment: return 7 << 26; | ||||
1245 | case Attribute::ReturnsTwice: return 1 << 29; | ||||
1246 | case Attribute::UWTable: return 1 << 30; | ||||
1247 | case Attribute::NonLazyBind: return 1U << 31; | ||||
1248 | case Attribute::SanitizeAddress: return 1ULL << 32; | ||||
1249 | case Attribute::MinSize: return 1ULL << 33; | ||||
1250 | case Attribute::NoDuplicate: return 1ULL << 34; | ||||
1251 | case Attribute::StackProtectStrong: return 1ULL << 35; | ||||
1252 | case Attribute::SanitizeThread: return 1ULL << 36; | ||||
1253 | case Attribute::SanitizeMemory: return 1ULL << 37; | ||||
1254 | case Attribute::NoBuiltin: return 1ULL << 38; | ||||
1255 | case Attribute::Returned: return 1ULL << 39; | ||||
1256 | case Attribute::Cold: return 1ULL << 40; | ||||
1257 | case Attribute::Builtin: return 1ULL << 41; | ||||
1258 | case Attribute::OptimizeNone: return 1ULL << 42; | ||||
1259 | case Attribute::InAlloca: return 1ULL << 43; | ||||
1260 | case Attribute::NonNull: return 1ULL << 44; | ||||
1261 | case Attribute::JumpTable: return 1ULL << 45; | ||||
1262 | case Attribute::Convergent: return 1ULL << 46; | ||||
1263 | case Attribute::SafeStack: return 1ULL << 47; | ||||
1264 | case Attribute::NoRecurse: return 1ULL << 48; | ||||
1265 | case Attribute::InaccessibleMemOnly: return 1ULL << 49; | ||||
1266 | case Attribute::InaccessibleMemOrArgMemOnly: return 1ULL << 50; | ||||
1267 | case Attribute::SwiftSelf: return 1ULL << 51; | ||||
1268 | case Attribute::SwiftError: return 1ULL << 52; | ||||
1269 | case Attribute::WriteOnly: return 1ULL << 53; | ||||
1270 | case Attribute::Speculatable: return 1ULL << 54; | ||||
1271 | case Attribute::StrictFP: return 1ULL << 55; | ||||
1272 | case Attribute::SanitizeHWAddress: return 1ULL << 56; | ||||
1273 | case Attribute::NoCfCheck: return 1ULL << 57; | ||||
1274 | case Attribute::OptForFuzzing: return 1ULL << 58; | ||||
1275 | case Attribute::ShadowCallStack: return 1ULL << 59; | ||||
1276 | case Attribute::SpeculativeLoadHardening: | ||||
1277 | return 1ULL << 60; | ||||
1278 | case Attribute::ImmArg: | ||||
1279 | return 1ULL << 61; | ||||
1280 | case Attribute::WillReturn: | ||||
1281 | return 1ULL << 62; | ||||
1282 | case Attribute::NoFree: | ||||
1283 | return 1ULL << 63; | ||||
1284 | case Attribute::NoSync: | ||||
1285 | llvm_unreachable("nosync attribute not supported in raw format")::llvm::llvm_unreachable_internal("nosync attribute not supported in raw format" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1285); | ||||
1286 | break; | ||||
1287 | case Attribute::Dereferenceable: | ||||
1288 | llvm_unreachable("dereferenceable attribute not supported in raw format")::llvm::llvm_unreachable_internal("dereferenceable attribute not supported in raw format" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1288); | ||||
1289 | break; | ||||
1290 | case Attribute::DereferenceableOrNull: | ||||
1291 | llvm_unreachable("dereferenceable_or_null attribute not supported in raw "::llvm::llvm_unreachable_internal("dereferenceable_or_null attribute not supported in raw " "format", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1292) | ||||
1292 | "format")::llvm::llvm_unreachable_internal("dereferenceable_or_null attribute not supported in raw " "format", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1292); | ||||
1293 | break; | ||||
1294 | case Attribute::ArgMemOnly: | ||||
1295 | llvm_unreachable("argmemonly attribute not supported in raw format")::llvm::llvm_unreachable_internal("argmemonly attribute not supported in raw format" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1295); | ||||
1296 | break; | ||||
1297 | case Attribute::AllocSize: | ||||
1298 | llvm_unreachable("allocsize not supported in raw format")::llvm::llvm_unreachable_internal("allocsize not supported in raw format" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1298); | ||||
1299 | break; | ||||
1300 | case Attribute::SanitizeMemTag: | ||||
1301 | llvm_unreachable("sanitize_memtag attribute not supported in raw format")::llvm::llvm_unreachable_internal("sanitize_memtag attribute not supported in raw format" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1301); | ||||
1302 | break; | ||||
1303 | } | ||||
1304 | llvm_unreachable("Unsupported attribute type")::llvm::llvm_unreachable_internal("Unsupported attribute type" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1304); | ||||
1305 | } | ||||
1306 | |||||
1307 | static void addRawAttributeValue(AttrBuilder &B, uint64_t Val) { | ||||
1308 | if (!Val) return; | ||||
1309 | |||||
1310 | for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds; | ||||
1311 | I = Attribute::AttrKind(I + 1)) { | ||||
1312 | if (I == Attribute::SanitizeMemTag || | ||||
1313 | I == Attribute::Dereferenceable || | ||||
1314 | I == Attribute::DereferenceableOrNull || | ||||
1315 | I == Attribute::ArgMemOnly || | ||||
1316 | I == Attribute::AllocSize || | ||||
1317 | I == Attribute::NoSync) | ||||
1318 | continue; | ||||
1319 | if (uint64_t A = (Val & getRawAttributeMask(I))) { | ||||
1320 | if (I == Attribute::Alignment) | ||||
1321 | B.addAlignmentAttr(1ULL << ((A >> 16) - 1)); | ||||
1322 | else if (I == Attribute::StackAlignment) | ||||
1323 | B.addStackAlignmentAttr(1ULL << ((A >> 26)-1)); | ||||
1324 | else | ||||
1325 | B.addAttribute(I); | ||||
1326 | } | ||||
1327 | } | ||||
1328 | } | ||||
1329 | |||||
1330 | /// This fills an AttrBuilder object with the LLVM attributes that have | ||||
1331 | /// been decoded from the given integer. This function must stay in sync with | ||||
1332 | /// 'encodeLLVMAttributesForBitcode'. | ||||
1333 | static void decodeLLVMAttributesForBitcode(AttrBuilder &B, | ||||
1334 | uint64_t EncodedAttrs) { | ||||
1335 | // FIXME: Remove in 4.0. | ||||
1336 | |||||
1337 | // The alignment is stored as a 16-bit raw value from bits 31--16. We shift | ||||
1338 | // the bits above 31 down by 11 bits. | ||||
1339 | unsigned Alignment = (EncodedAttrs & (0xffffULL << 16)) >> 16; | ||||
1340 | assert((!Alignment || isPowerOf2_32(Alignment)) &&(((!Alignment || isPowerOf2_32(Alignment)) && "Alignment must be a power of two." ) ? static_cast<void> (0) : __assert_fail ("(!Alignment || isPowerOf2_32(Alignment)) && \"Alignment must be a power of two.\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1341, __PRETTY_FUNCTION__)) | ||||
1341 | "Alignment must be a power of two.")(((!Alignment || isPowerOf2_32(Alignment)) && "Alignment must be a power of two." ) ? static_cast<void> (0) : __assert_fail ("(!Alignment || isPowerOf2_32(Alignment)) && \"Alignment must be a power of two.\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1341, __PRETTY_FUNCTION__)); | ||||
1342 | |||||
1343 | if (Alignment) | ||||
1344 | B.addAlignmentAttr(Alignment); | ||||
1345 | addRawAttributeValue(B, ((EncodedAttrs & (0xfffffULL << 32)) >> 11) | | ||||
1346 | (EncodedAttrs & 0xffff)); | ||||
1347 | } | ||||
1348 | |||||
1349 | Error BitcodeReader::parseAttributeBlock() { | ||||
1350 | if (Error Err = Stream.EnterSubBlock(bitc::PARAMATTR_BLOCK_ID)) | ||||
1351 | return Err; | ||||
1352 | |||||
1353 | if (!MAttributes.empty()) | ||||
1354 | return error("Invalid multiple blocks"); | ||||
1355 | |||||
1356 | SmallVector<uint64_t, 64> Record; | ||||
1357 | |||||
1358 | SmallVector<AttributeList, 8> Attrs; | ||||
1359 | |||||
1360 | // Read all the records. | ||||
1361 | while (true) { | ||||
1362 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
1363 | if (!MaybeEntry) | ||||
1364 | return MaybeEntry.takeError(); | ||||
1365 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
1366 | |||||
1367 | switch (Entry.Kind) { | ||||
1368 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
1369 | case BitstreamEntry::Error: | ||||
1370 | return error("Malformed block"); | ||||
1371 | case BitstreamEntry::EndBlock: | ||||
1372 | return Error::success(); | ||||
1373 | case BitstreamEntry::Record: | ||||
1374 | // The interesting case. | ||||
1375 | break; | ||||
1376 | } | ||||
1377 | |||||
1378 | // Read a record. | ||||
1379 | Record.clear(); | ||||
1380 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
1381 | if (!MaybeRecord) | ||||
1382 | return MaybeRecord.takeError(); | ||||
1383 | switch (MaybeRecord.get()) { | ||||
1384 | default: // Default behavior: ignore. | ||||
1385 | break; | ||||
1386 | case bitc::PARAMATTR_CODE_ENTRY_OLD: // ENTRY: [paramidx0, attr0, ...] | ||||
1387 | // FIXME: Remove in 4.0. | ||||
1388 | if (Record.size() & 1) | ||||
1389 | return error("Invalid record"); | ||||
1390 | |||||
1391 | for (unsigned i = 0, e = Record.size(); i != e; i += 2) { | ||||
1392 | AttrBuilder B; | ||||
1393 | decodeLLVMAttributesForBitcode(B, Record[i+1]); | ||||
1394 | Attrs.push_back(AttributeList::get(Context, Record[i], B)); | ||||
1395 | } | ||||
1396 | |||||
1397 | MAttributes.push_back(AttributeList::get(Context, Attrs)); | ||||
1398 | Attrs.clear(); | ||||
1399 | break; | ||||
1400 | case bitc::PARAMATTR_CODE_ENTRY: // ENTRY: [attrgrp0, attrgrp1, ...] | ||||
1401 | for (unsigned i = 0, e = Record.size(); i != e; ++i) | ||||
1402 | Attrs.push_back(MAttributeGroups[Record[i]]); | ||||
1403 | |||||
1404 | MAttributes.push_back(AttributeList::get(Context, Attrs)); | ||||
1405 | Attrs.clear(); | ||||
1406 | break; | ||||
1407 | } | ||||
1408 | } | ||||
1409 | } | ||||
1410 | |||||
1411 | // Returns Attribute::None on unrecognized codes. | ||||
1412 | static Attribute::AttrKind getAttrFromCode(uint64_t Code) { | ||||
1413 | switch (Code) { | ||||
1414 | default: | ||||
1415 | return Attribute::None; | ||||
1416 | case bitc::ATTR_KIND_ALIGNMENT: | ||||
1417 | return Attribute::Alignment; | ||||
1418 | case bitc::ATTR_KIND_ALWAYS_INLINE: | ||||
1419 | return Attribute::AlwaysInline; | ||||
1420 | case bitc::ATTR_KIND_ARGMEMONLY: | ||||
1421 | return Attribute::ArgMemOnly; | ||||
1422 | case bitc::ATTR_KIND_BUILTIN: | ||||
1423 | return Attribute::Builtin; | ||||
1424 | case bitc::ATTR_KIND_BY_VAL: | ||||
1425 | return Attribute::ByVal; | ||||
1426 | case bitc::ATTR_KIND_IN_ALLOCA: | ||||
1427 | return Attribute::InAlloca; | ||||
1428 | case bitc::ATTR_KIND_COLD: | ||||
1429 | return Attribute::Cold; | ||||
1430 | case bitc::ATTR_KIND_CONVERGENT: | ||||
1431 | return Attribute::Convergent; | ||||
1432 | case bitc::ATTR_KIND_INACCESSIBLEMEM_ONLY: | ||||
1433 | return Attribute::InaccessibleMemOnly; | ||||
1434 | case bitc::ATTR_KIND_INACCESSIBLEMEM_OR_ARGMEMONLY: | ||||
1435 | return Attribute::InaccessibleMemOrArgMemOnly; | ||||
1436 | case bitc::ATTR_KIND_INLINE_HINT: | ||||
1437 | return Attribute::InlineHint; | ||||
1438 | case bitc::ATTR_KIND_IN_REG: | ||||
1439 | return Attribute::InReg; | ||||
1440 | case bitc::ATTR_KIND_JUMP_TABLE: | ||||
1441 | return Attribute::JumpTable; | ||||
1442 | case bitc::ATTR_KIND_MIN_SIZE: | ||||
1443 | return Attribute::MinSize; | ||||
1444 | case bitc::ATTR_KIND_NAKED: | ||||
1445 | return Attribute::Naked; | ||||
1446 | case bitc::ATTR_KIND_NEST: | ||||
1447 | return Attribute::Nest; | ||||
1448 | case bitc::ATTR_KIND_NO_ALIAS: | ||||
1449 | return Attribute::NoAlias; | ||||
1450 | case bitc::ATTR_KIND_NO_BUILTIN: | ||||
1451 | return Attribute::NoBuiltin; | ||||
1452 | case bitc::ATTR_KIND_NO_CAPTURE: | ||||
1453 | return Attribute::NoCapture; | ||||
1454 | case bitc::ATTR_KIND_NO_DUPLICATE: | ||||
1455 | return Attribute::NoDuplicate; | ||||
1456 | case bitc::ATTR_KIND_NOFREE: | ||||
1457 | return Attribute::NoFree; | ||||
1458 | case bitc::ATTR_KIND_NO_IMPLICIT_FLOAT: | ||||
1459 | return Attribute::NoImplicitFloat; | ||||
1460 | case bitc::ATTR_KIND_NO_INLINE: | ||||
1461 | return Attribute::NoInline; | ||||
1462 | case bitc::ATTR_KIND_NO_RECURSE: | ||||
1463 | return Attribute::NoRecurse; | ||||
1464 | case bitc::ATTR_KIND_NON_LAZY_BIND: | ||||
1465 | return Attribute::NonLazyBind; | ||||
1466 | case bitc::ATTR_KIND_NON_NULL: | ||||
1467 | return Attribute::NonNull; | ||||
1468 | case bitc::ATTR_KIND_DEREFERENCEABLE: | ||||
1469 | return Attribute::Dereferenceable; | ||||
1470 | case bitc::ATTR_KIND_DEREFERENCEABLE_OR_NULL: | ||||
1471 | return Attribute::DereferenceableOrNull; | ||||
1472 | case bitc::ATTR_KIND_ALLOC_SIZE: | ||||
1473 | return Attribute::AllocSize; | ||||
1474 | case bitc::ATTR_KIND_NO_RED_ZONE: | ||||
1475 | return Attribute::NoRedZone; | ||||
1476 | case bitc::ATTR_KIND_NO_RETURN: | ||||
1477 | return Attribute::NoReturn; | ||||
1478 | case bitc::ATTR_KIND_NOSYNC: | ||||
1479 | return Attribute::NoSync; | ||||
1480 | case bitc::ATTR_KIND_NOCF_CHECK: | ||||
1481 | return Attribute::NoCfCheck; | ||||
1482 | case bitc::ATTR_KIND_NO_UNWIND: | ||||
1483 | return Attribute::NoUnwind; | ||||
1484 | case bitc::ATTR_KIND_OPT_FOR_FUZZING: | ||||
1485 | return Attribute::OptForFuzzing; | ||||
1486 | case bitc::ATTR_KIND_OPTIMIZE_FOR_SIZE: | ||||
1487 | return Attribute::OptimizeForSize; | ||||
1488 | case bitc::ATTR_KIND_OPTIMIZE_NONE: | ||||
1489 | return Attribute::OptimizeNone; | ||||
1490 | case bitc::ATTR_KIND_READ_NONE: | ||||
1491 | return Attribute::ReadNone; | ||||
1492 | case bitc::ATTR_KIND_READ_ONLY: | ||||
1493 | return Attribute::ReadOnly; | ||||
1494 | case bitc::ATTR_KIND_RETURNED: | ||||
1495 | return Attribute::Returned; | ||||
1496 | case bitc::ATTR_KIND_RETURNS_TWICE: | ||||
1497 | return Attribute::ReturnsTwice; | ||||
1498 | case bitc::ATTR_KIND_S_EXT: | ||||
1499 | return Attribute::SExt; | ||||
1500 | case bitc::ATTR_KIND_SPECULATABLE: | ||||
1501 | return Attribute::Speculatable; | ||||
1502 | case bitc::ATTR_KIND_STACK_ALIGNMENT: | ||||
1503 | return Attribute::StackAlignment; | ||||
1504 | case bitc::ATTR_KIND_STACK_PROTECT: | ||||
1505 | return Attribute::StackProtect; | ||||
1506 | case bitc::ATTR_KIND_STACK_PROTECT_REQ: | ||||
1507 | return Attribute::StackProtectReq; | ||||
1508 | case bitc::ATTR_KIND_STACK_PROTECT_STRONG: | ||||
1509 | return Attribute::StackProtectStrong; | ||||
1510 | case bitc::ATTR_KIND_SAFESTACK: | ||||
1511 | return Attribute::SafeStack; | ||||
1512 | case bitc::ATTR_KIND_SHADOWCALLSTACK: | ||||
1513 | return Attribute::ShadowCallStack; | ||||
1514 | case bitc::ATTR_KIND_STRICT_FP: | ||||
1515 | return Attribute::StrictFP; | ||||
1516 | case bitc::ATTR_KIND_STRUCT_RET: | ||||
1517 | return Attribute::StructRet; | ||||
1518 | case bitc::ATTR_KIND_SANITIZE_ADDRESS: | ||||
1519 | return Attribute::SanitizeAddress; | ||||
1520 | case bitc::ATTR_KIND_SANITIZE_HWADDRESS: | ||||
1521 | return Attribute::SanitizeHWAddress; | ||||
1522 | case bitc::ATTR_KIND_SANITIZE_THREAD: | ||||
1523 | return Attribute::SanitizeThread; | ||||
1524 | case bitc::ATTR_KIND_SANITIZE_MEMORY: | ||||
1525 | return Attribute::SanitizeMemory; | ||||
1526 | case bitc::ATTR_KIND_SPECULATIVE_LOAD_HARDENING: | ||||
1527 | return Attribute::SpeculativeLoadHardening; | ||||
1528 | case bitc::ATTR_KIND_SWIFT_ERROR: | ||||
1529 | return Attribute::SwiftError; | ||||
1530 | case bitc::ATTR_KIND_SWIFT_SELF: | ||||
1531 | return Attribute::SwiftSelf; | ||||
1532 | case bitc::ATTR_KIND_UW_TABLE: | ||||
1533 | return Attribute::UWTable; | ||||
1534 | case bitc::ATTR_KIND_WILLRETURN: | ||||
1535 | return Attribute::WillReturn; | ||||
1536 | case bitc::ATTR_KIND_WRITEONLY: | ||||
1537 | return Attribute::WriteOnly; | ||||
1538 | case bitc::ATTR_KIND_Z_EXT: | ||||
1539 | return Attribute::ZExt; | ||||
1540 | case bitc::ATTR_KIND_IMMARG: | ||||
1541 | return Attribute::ImmArg; | ||||
1542 | case bitc::ATTR_KIND_SANITIZE_MEMTAG: | ||||
1543 | return Attribute::SanitizeMemTag; | ||||
1544 | } | ||||
1545 | } | ||||
1546 | |||||
1547 | Error BitcodeReader::parseAlignmentValue(uint64_t Exponent, | ||||
1548 | MaybeAlign &Alignment) { | ||||
1549 | // Note: Alignment in bitcode files is incremented by 1, so that zero | ||||
1550 | // can be used for default alignment. | ||||
1551 | if (Exponent > Value::MaxAlignmentExponent + 1) | ||||
1552 | return error("Invalid alignment value"); | ||||
1553 | Alignment = decodeMaybeAlign(Exponent); | ||||
1554 | return Error::success(); | ||||
1555 | } | ||||
1556 | |||||
1557 | Error BitcodeReader::parseAttrKind(uint64_t Code, Attribute::AttrKind *Kind) { | ||||
1558 | *Kind = getAttrFromCode(Code); | ||||
1559 | if (*Kind == Attribute::None) | ||||
1560 | return error("Unknown attribute kind (" + Twine(Code) + ")"); | ||||
1561 | return Error::success(); | ||||
1562 | } | ||||
1563 | |||||
1564 | Error BitcodeReader::parseAttributeGroupBlock() { | ||||
1565 | if (Error Err = Stream.EnterSubBlock(bitc::PARAMATTR_GROUP_BLOCK_ID)) | ||||
1566 | return Err; | ||||
1567 | |||||
1568 | if (!MAttributeGroups.empty()) | ||||
1569 | return error("Invalid multiple blocks"); | ||||
1570 | |||||
1571 | SmallVector<uint64_t, 64> Record; | ||||
1572 | |||||
1573 | // Read all the records. | ||||
1574 | while (true) { | ||||
1575 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
1576 | if (!MaybeEntry) | ||||
1577 | return MaybeEntry.takeError(); | ||||
1578 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
1579 | |||||
1580 | switch (Entry.Kind) { | ||||
1581 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
1582 | case BitstreamEntry::Error: | ||||
1583 | return error("Malformed block"); | ||||
1584 | case BitstreamEntry::EndBlock: | ||||
1585 | return Error::success(); | ||||
1586 | case BitstreamEntry::Record: | ||||
1587 | // The interesting case. | ||||
1588 | break; | ||||
1589 | } | ||||
1590 | |||||
1591 | // Read a record. | ||||
1592 | Record.clear(); | ||||
1593 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
1594 | if (!MaybeRecord) | ||||
1595 | return MaybeRecord.takeError(); | ||||
1596 | switch (MaybeRecord.get()) { | ||||
1597 | default: // Default behavior: ignore. | ||||
1598 | break; | ||||
1599 | case bitc::PARAMATTR_GRP_CODE_ENTRY: { // ENTRY: [grpid, idx, a0, a1, ...] | ||||
1600 | if (Record.size() < 3) | ||||
1601 | return error("Invalid record"); | ||||
1602 | |||||
1603 | uint64_t GrpID = Record[0]; | ||||
1604 | uint64_t Idx = Record[1]; // Index of the object this attribute refers to. | ||||
1605 | |||||
1606 | AttrBuilder B; | ||||
1607 | for (unsigned i = 2, e = Record.size(); i != e; ++i) { | ||||
1608 | if (Record[i] == 0) { // Enum attribute | ||||
1609 | Attribute::AttrKind Kind; | ||||
1610 | if (Error Err = parseAttrKind(Record[++i], &Kind)) | ||||
1611 | return Err; | ||||
1612 | |||||
1613 | // Upgrade old-style byval attribute to one with a type, even if it's | ||||
1614 | // nullptr. We will have to insert the real type when we associate | ||||
1615 | // this AttributeList with a function. | ||||
1616 | if (Kind == Attribute::ByVal) | ||||
1617 | B.addByValAttr(nullptr); | ||||
1618 | |||||
1619 | B.addAttribute(Kind); | ||||
1620 | } else if (Record[i] == 1) { // Integer attribute | ||||
1621 | Attribute::AttrKind Kind; | ||||
1622 | if (Error Err = parseAttrKind(Record[++i], &Kind)) | ||||
1623 | return Err; | ||||
1624 | if (Kind == Attribute::Alignment) | ||||
1625 | B.addAlignmentAttr(Record[++i]); | ||||
1626 | else if (Kind == Attribute::StackAlignment) | ||||
1627 | B.addStackAlignmentAttr(Record[++i]); | ||||
1628 | else if (Kind == Attribute::Dereferenceable) | ||||
1629 | B.addDereferenceableAttr(Record[++i]); | ||||
1630 | else if (Kind == Attribute::DereferenceableOrNull) | ||||
1631 | B.addDereferenceableOrNullAttr(Record[++i]); | ||||
1632 | else if (Kind == Attribute::AllocSize) | ||||
1633 | B.addAllocSizeAttrFromRawRepr(Record[++i]); | ||||
1634 | } else if (Record[i] == 3 || Record[i] == 4) { // String attribute | ||||
1635 | bool HasValue = (Record[i++] == 4); | ||||
1636 | SmallString<64> KindStr; | ||||
1637 | SmallString<64> ValStr; | ||||
1638 | |||||
1639 | while (Record[i] != 0 && i != e) | ||||
1640 | KindStr += Record[i++]; | ||||
1641 | assert(Record[i] == 0 && "Kind string not null terminated")((Record[i] == 0 && "Kind string not null terminated" ) ? static_cast<void> (0) : __assert_fail ("Record[i] == 0 && \"Kind string not null terminated\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1641, __PRETTY_FUNCTION__)); | ||||
1642 | |||||
1643 | if (HasValue) { | ||||
1644 | // Has a value associated with it. | ||||
1645 | ++i; // Skip the '0' that terminates the "kind" string. | ||||
1646 | while (Record[i] != 0 && i != e) | ||||
1647 | ValStr += Record[i++]; | ||||
1648 | assert(Record[i] == 0 && "Value string not null terminated")((Record[i] == 0 && "Value string not null terminated" ) ? static_cast<void> (0) : __assert_fail ("Record[i] == 0 && \"Value string not null terminated\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1648, __PRETTY_FUNCTION__)); | ||||
1649 | } | ||||
1650 | |||||
1651 | B.addAttribute(KindStr.str(), ValStr.str()); | ||||
1652 | } else { | ||||
1653 | assert((Record[i] == 5 || Record[i] == 6) &&(((Record[i] == 5 || Record[i] == 6) && "Invalid attribute group entry" ) ? static_cast<void> (0) : __assert_fail ("(Record[i] == 5 || Record[i] == 6) && \"Invalid attribute group entry\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1654, __PRETTY_FUNCTION__)) | ||||
1654 | "Invalid attribute group entry")(((Record[i] == 5 || Record[i] == 6) && "Invalid attribute group entry" ) ? static_cast<void> (0) : __assert_fail ("(Record[i] == 5 || Record[i] == 6) && \"Invalid attribute group entry\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1654, __PRETTY_FUNCTION__)); | ||||
1655 | bool HasType = Record[i] == 6; | ||||
1656 | Attribute::AttrKind Kind; | ||||
1657 | if (Error Err = parseAttrKind(Record[++i], &Kind)) | ||||
1658 | return Err; | ||||
1659 | if (Kind == Attribute::ByVal) | ||||
1660 | B.addByValAttr(HasType ? getTypeByID(Record[++i]) : nullptr); | ||||
1661 | } | ||||
1662 | } | ||||
1663 | |||||
1664 | UpgradeFramePointerAttributes(B); | ||||
1665 | MAttributeGroups[GrpID] = AttributeList::get(Context, Idx, B); | ||||
1666 | break; | ||||
1667 | } | ||||
1668 | } | ||||
1669 | } | ||||
1670 | } | ||||
1671 | |||||
1672 | Error BitcodeReader::parseTypeTable() { | ||||
1673 | if (Error Err = Stream.EnterSubBlock(bitc::TYPE_BLOCK_ID_NEW)) | ||||
1674 | return Err; | ||||
1675 | |||||
1676 | return parseTypeTableBody(); | ||||
1677 | } | ||||
1678 | |||||
1679 | Error BitcodeReader::parseTypeTableBody() { | ||||
1680 | if (!TypeList.empty()) | ||||
1681 | return error("Invalid multiple blocks"); | ||||
1682 | |||||
1683 | SmallVector<uint64_t, 64> Record; | ||||
1684 | unsigned NumRecords = 0; | ||||
1685 | |||||
1686 | SmallString<64> TypeName; | ||||
1687 | |||||
1688 | // Read all the records for this type table. | ||||
1689 | while (true) { | ||||
1690 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
1691 | if (!MaybeEntry) | ||||
1692 | return MaybeEntry.takeError(); | ||||
1693 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
1694 | |||||
1695 | switch (Entry.Kind) { | ||||
1696 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
1697 | case BitstreamEntry::Error: | ||||
1698 | return error("Malformed block"); | ||||
1699 | case BitstreamEntry::EndBlock: | ||||
1700 | if (NumRecords != TypeList.size()) | ||||
1701 | return error("Malformed block"); | ||||
1702 | return Error::success(); | ||||
1703 | case BitstreamEntry::Record: | ||||
1704 | // The interesting case. | ||||
1705 | break; | ||||
1706 | } | ||||
1707 | |||||
1708 | // Read a record. | ||||
1709 | Record.clear(); | ||||
1710 | Type *ResultTy = nullptr; | ||||
1711 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
1712 | if (!MaybeRecord) | ||||
1713 | return MaybeRecord.takeError(); | ||||
1714 | switch (MaybeRecord.get()) { | ||||
1715 | default: | ||||
1716 | return error("Invalid value"); | ||||
1717 | case bitc::TYPE_CODE_NUMENTRY: // TYPE_CODE_NUMENTRY: [numentries] | ||||
1718 | // TYPE_CODE_NUMENTRY contains a count of the number of types in the | ||||
1719 | // type list. This allows us to reserve space. | ||||
1720 | if (Record.size() < 1) | ||||
1721 | return error("Invalid record"); | ||||
1722 | TypeList.resize(Record[0]); | ||||
1723 | continue; | ||||
1724 | case bitc::TYPE_CODE_VOID: // VOID | ||||
1725 | ResultTy = Type::getVoidTy(Context); | ||||
1726 | break; | ||||
1727 | case bitc::TYPE_CODE_HALF: // HALF | ||||
1728 | ResultTy = Type::getHalfTy(Context); | ||||
1729 | break; | ||||
1730 | case bitc::TYPE_CODE_FLOAT: // FLOAT | ||||
1731 | ResultTy = Type::getFloatTy(Context); | ||||
1732 | break; | ||||
1733 | case bitc::TYPE_CODE_DOUBLE: // DOUBLE | ||||
1734 | ResultTy = Type::getDoubleTy(Context); | ||||
1735 | break; | ||||
1736 | case bitc::TYPE_CODE_X86_FP80: // X86_FP80 | ||||
1737 | ResultTy = Type::getX86_FP80Ty(Context); | ||||
1738 | break; | ||||
1739 | case bitc::TYPE_CODE_FP128: // FP128 | ||||
1740 | ResultTy = Type::getFP128Ty(Context); | ||||
1741 | break; | ||||
1742 | case bitc::TYPE_CODE_PPC_FP128: // PPC_FP128 | ||||
1743 | ResultTy = Type::getPPC_FP128Ty(Context); | ||||
1744 | break; | ||||
1745 | case bitc::TYPE_CODE_LABEL: // LABEL | ||||
1746 | ResultTy = Type::getLabelTy(Context); | ||||
1747 | break; | ||||
1748 | case bitc::TYPE_CODE_METADATA: // METADATA | ||||
1749 | ResultTy = Type::getMetadataTy(Context); | ||||
1750 | break; | ||||
1751 | case bitc::TYPE_CODE_X86_MMX: // X86_MMX | ||||
1752 | ResultTy = Type::getX86_MMXTy(Context); | ||||
1753 | break; | ||||
1754 | case bitc::TYPE_CODE_TOKEN: // TOKEN | ||||
1755 | ResultTy = Type::getTokenTy(Context); | ||||
1756 | break; | ||||
1757 | case bitc::TYPE_CODE_INTEGER: { // INTEGER: [width] | ||||
1758 | if (Record.size() < 1) | ||||
1759 | return error("Invalid record"); | ||||
1760 | |||||
1761 | uint64_t NumBits = Record[0]; | ||||
1762 | if (NumBits < IntegerType::MIN_INT_BITS || | ||||
1763 | NumBits > IntegerType::MAX_INT_BITS) | ||||
1764 | return error("Bitwidth for integer type out of range"); | ||||
1765 | ResultTy = IntegerType::get(Context, NumBits); | ||||
1766 | break; | ||||
1767 | } | ||||
1768 | case bitc::TYPE_CODE_POINTER: { // POINTER: [pointee type] or | ||||
1769 | // [pointee type, address space] | ||||
1770 | if (Record.size() < 1) | ||||
1771 | return error("Invalid record"); | ||||
1772 | unsigned AddressSpace = 0; | ||||
1773 | if (Record.size() == 2) | ||||
1774 | AddressSpace = Record[1]; | ||||
1775 | ResultTy = getTypeByID(Record[0]); | ||||
1776 | if (!ResultTy || | ||||
1777 | !PointerType::isValidElementType(ResultTy)) | ||||
1778 | return error("Invalid type"); | ||||
1779 | ResultTy = PointerType::get(ResultTy, AddressSpace); | ||||
1780 | break; | ||||
1781 | } | ||||
1782 | case bitc::TYPE_CODE_FUNCTION_OLD: { | ||||
1783 | // FIXME: attrid is dead, remove it in LLVM 4.0 | ||||
1784 | // FUNCTION: [vararg, attrid, retty, paramty x N] | ||||
1785 | if (Record.size() < 3) | ||||
1786 | return error("Invalid record"); | ||||
1787 | SmallVector<Type*, 8> ArgTys; | ||||
1788 | for (unsigned i = 3, e = Record.size(); i != e; ++i) { | ||||
1789 | if (Type *T = getTypeByID(Record[i])) | ||||
1790 | ArgTys.push_back(T); | ||||
1791 | else | ||||
1792 | break; | ||||
1793 | } | ||||
1794 | |||||
1795 | ResultTy = getTypeByID(Record[2]); | ||||
1796 | if (!ResultTy || ArgTys.size() < Record.size()-3) | ||||
1797 | return error("Invalid type"); | ||||
1798 | |||||
1799 | ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]); | ||||
1800 | break; | ||||
1801 | } | ||||
1802 | case bitc::TYPE_CODE_FUNCTION: { | ||||
1803 | // FUNCTION: [vararg, retty, paramty x N] | ||||
1804 | if (Record.size() < 2) | ||||
1805 | return error("Invalid record"); | ||||
1806 | SmallVector<Type*, 8> ArgTys; | ||||
1807 | for (unsigned i = 2, e = Record.size(); i != e; ++i) { | ||||
1808 | if (Type *T = getTypeByID(Record[i])) { | ||||
1809 | if (!FunctionType::isValidArgumentType(T)) | ||||
1810 | return error("Invalid function argument type"); | ||||
1811 | ArgTys.push_back(T); | ||||
1812 | } | ||||
1813 | else | ||||
1814 | break; | ||||
1815 | } | ||||
1816 | |||||
1817 | ResultTy = getTypeByID(Record[1]); | ||||
1818 | if (!ResultTy || ArgTys.size() < Record.size()-2) | ||||
1819 | return error("Invalid type"); | ||||
1820 | |||||
1821 | ResultTy = FunctionType::get(ResultTy, ArgTys, Record[0]); | ||||
1822 | break; | ||||
1823 | } | ||||
1824 | case bitc::TYPE_CODE_STRUCT_ANON: { // STRUCT: [ispacked, eltty x N] | ||||
1825 | if (Record.size() < 1) | ||||
1826 | return error("Invalid record"); | ||||
1827 | SmallVector<Type*, 8> EltTys; | ||||
1828 | for (unsigned i = 1, e = Record.size(); i != e; ++i) { | ||||
1829 | if (Type *T = getTypeByID(Record[i])) | ||||
1830 | EltTys.push_back(T); | ||||
1831 | else | ||||
1832 | break; | ||||
1833 | } | ||||
1834 | if (EltTys.size() != Record.size()-1) | ||||
1835 | return error("Invalid type"); | ||||
1836 | ResultTy = StructType::get(Context, EltTys, Record[0]); | ||||
1837 | break; | ||||
1838 | } | ||||
1839 | case bitc::TYPE_CODE_STRUCT_NAME: // STRUCT_NAME: [strchr x N] | ||||
1840 | if (convertToString(Record, 0, TypeName)) | ||||
1841 | return error("Invalid record"); | ||||
1842 | continue; | ||||
1843 | |||||
1844 | case bitc::TYPE_CODE_STRUCT_NAMED: { // STRUCT: [ispacked, eltty x N] | ||||
1845 | if (Record.size() < 1) | ||||
1846 | return error("Invalid record"); | ||||
1847 | |||||
1848 | if (NumRecords >= TypeList.size()) | ||||
1849 | return error("Invalid TYPE table"); | ||||
1850 | |||||
1851 | // Check to see if this was forward referenced, if so fill in the temp. | ||||
1852 | StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]); | ||||
1853 | if (Res) { | ||||
1854 | Res->setName(TypeName); | ||||
1855 | TypeList[NumRecords] = nullptr; | ||||
1856 | } else // Otherwise, create a new struct. | ||||
1857 | Res = createIdentifiedStructType(Context, TypeName); | ||||
1858 | TypeName.clear(); | ||||
1859 | |||||
1860 | SmallVector<Type*, 8> EltTys; | ||||
1861 | for (unsigned i = 1, e = Record.size(); i != e; ++i) { | ||||
1862 | if (Type *T = getTypeByID(Record[i])) | ||||
1863 | EltTys.push_back(T); | ||||
1864 | else | ||||
1865 | break; | ||||
1866 | } | ||||
1867 | if (EltTys.size() != Record.size()-1) | ||||
1868 | return error("Invalid record"); | ||||
1869 | Res->setBody(EltTys, Record[0]); | ||||
1870 | ResultTy = Res; | ||||
1871 | break; | ||||
1872 | } | ||||
1873 | case bitc::TYPE_CODE_OPAQUE: { // OPAQUE: [] | ||||
1874 | if (Record.size() != 1) | ||||
1875 | return error("Invalid record"); | ||||
1876 | |||||
1877 | if (NumRecords >= TypeList.size()) | ||||
1878 | return error("Invalid TYPE table"); | ||||
1879 | |||||
1880 | // Check to see if this was forward referenced, if so fill in the temp. | ||||
1881 | StructType *Res = cast_or_null<StructType>(TypeList[NumRecords]); | ||||
1882 | if (Res) { | ||||
1883 | Res->setName(TypeName); | ||||
1884 | TypeList[NumRecords] = nullptr; | ||||
1885 | } else // Otherwise, create a new struct with no body. | ||||
1886 | Res = createIdentifiedStructType(Context, TypeName); | ||||
1887 | TypeName.clear(); | ||||
1888 | ResultTy = Res; | ||||
1889 | break; | ||||
1890 | } | ||||
1891 | case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty] | ||||
1892 | if (Record.size() < 2) | ||||
1893 | return error("Invalid record"); | ||||
1894 | ResultTy = getTypeByID(Record[1]); | ||||
1895 | if (!ResultTy || !ArrayType::isValidElementType(ResultTy)) | ||||
1896 | return error("Invalid type"); | ||||
1897 | ResultTy = ArrayType::get(ResultTy, Record[0]); | ||||
1898 | break; | ||||
1899 | case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty] or | ||||
1900 | // [numelts, eltty, scalable] | ||||
1901 | if (Record.size() < 2) | ||||
1902 | return error("Invalid record"); | ||||
1903 | if (Record[0] == 0) | ||||
1904 | return error("Invalid vector length"); | ||||
1905 | ResultTy = getTypeByID(Record[1]); | ||||
1906 | if (!ResultTy || !StructType::isValidElementType(ResultTy)) | ||||
1907 | return error("Invalid type"); | ||||
1908 | bool Scalable = Record.size() > 2 ? Record[2] : false; | ||||
1909 | ResultTy = VectorType::get(ResultTy, Record[0], Scalable); | ||||
1910 | break; | ||||
1911 | } | ||||
1912 | |||||
1913 | if (NumRecords >= TypeList.size()) | ||||
1914 | return error("Invalid TYPE table"); | ||||
1915 | if (TypeList[NumRecords]) | ||||
1916 | return error( | ||||
1917 | "Invalid TYPE table: Only named structs can be forward referenced"); | ||||
1918 | assert(ResultTy && "Didn't read a type?")((ResultTy && "Didn't read a type?") ? static_cast< void> (0) : __assert_fail ("ResultTy && \"Didn't read a type?\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 1918, __PRETTY_FUNCTION__)); | ||||
1919 | TypeList[NumRecords++] = ResultTy; | ||||
1920 | } | ||||
1921 | } | ||||
1922 | |||||
1923 | Error BitcodeReader::parseOperandBundleTags() { | ||||
1924 | if (Error Err = Stream.EnterSubBlock(bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID)) | ||||
1925 | return Err; | ||||
1926 | |||||
1927 | if (!BundleTags.empty()) | ||||
1928 | return error("Invalid multiple blocks"); | ||||
1929 | |||||
1930 | SmallVector<uint64_t, 64> Record; | ||||
1931 | |||||
1932 | while (true) { | ||||
1933 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
1934 | if (!MaybeEntry) | ||||
1935 | return MaybeEntry.takeError(); | ||||
1936 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
1937 | |||||
1938 | switch (Entry.Kind) { | ||||
1939 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
1940 | case BitstreamEntry::Error: | ||||
1941 | return error("Malformed block"); | ||||
1942 | case BitstreamEntry::EndBlock: | ||||
1943 | return Error::success(); | ||||
1944 | case BitstreamEntry::Record: | ||||
1945 | // The interesting case. | ||||
1946 | break; | ||||
1947 | } | ||||
1948 | |||||
1949 | // Tags are implicitly mapped to integers by their order. | ||||
1950 | |||||
1951 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
1952 | if (!MaybeRecord) | ||||
1953 | return MaybeRecord.takeError(); | ||||
1954 | if (MaybeRecord.get() != bitc::OPERAND_BUNDLE_TAG) | ||||
1955 | return error("Invalid record"); | ||||
1956 | |||||
1957 | // OPERAND_BUNDLE_TAG: [strchr x N] | ||||
1958 | BundleTags.emplace_back(); | ||||
1959 | if (convertToString(Record, 0, BundleTags.back())) | ||||
1960 | return error("Invalid record"); | ||||
1961 | Record.clear(); | ||||
1962 | } | ||||
1963 | } | ||||
1964 | |||||
1965 | Error BitcodeReader::parseSyncScopeNames() { | ||||
1966 | if (Error Err = Stream.EnterSubBlock(bitc::SYNC_SCOPE_NAMES_BLOCK_ID)) | ||||
1967 | return Err; | ||||
1968 | |||||
1969 | if (!SSIDs.empty()) | ||||
1970 | return error("Invalid multiple synchronization scope names blocks"); | ||||
1971 | |||||
1972 | SmallVector<uint64_t, 64> Record; | ||||
1973 | while (true) { | ||||
1974 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
1975 | if (!MaybeEntry) | ||||
1976 | return MaybeEntry.takeError(); | ||||
1977 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
1978 | |||||
1979 | switch (Entry.Kind) { | ||||
1980 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
1981 | case BitstreamEntry::Error: | ||||
1982 | return error("Malformed block"); | ||||
1983 | case BitstreamEntry::EndBlock: | ||||
1984 | if (SSIDs.empty()) | ||||
1985 | return error("Invalid empty synchronization scope names block"); | ||||
1986 | return Error::success(); | ||||
1987 | case BitstreamEntry::Record: | ||||
1988 | // The interesting case. | ||||
1989 | break; | ||||
1990 | } | ||||
1991 | |||||
1992 | // Synchronization scope names are implicitly mapped to synchronization | ||||
1993 | // scope IDs by their order. | ||||
1994 | |||||
1995 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
1996 | if (!MaybeRecord) | ||||
1997 | return MaybeRecord.takeError(); | ||||
1998 | if (MaybeRecord.get() != bitc::SYNC_SCOPE_NAME) | ||||
1999 | return error("Invalid record"); | ||||
2000 | |||||
2001 | SmallString<16> SSN; | ||||
2002 | if (convertToString(Record, 0, SSN)) | ||||
2003 | return error("Invalid record"); | ||||
2004 | |||||
2005 | SSIDs.push_back(Context.getOrInsertSyncScopeID(SSN)); | ||||
2006 | Record.clear(); | ||||
2007 | } | ||||
2008 | } | ||||
2009 | |||||
2010 | /// Associate a value with its name from the given index in the provided record. | ||||
2011 | Expected<Value *> BitcodeReader::recordValue(SmallVectorImpl<uint64_t> &Record, | ||||
2012 | unsigned NameIndex, Triple &TT) { | ||||
2013 | SmallString<128> ValueName; | ||||
2014 | if (convertToString(Record, NameIndex, ValueName)) | ||||
2015 | return error("Invalid record"); | ||||
2016 | unsigned ValueID = Record[0]; | ||||
2017 | if (ValueID >= ValueList.size() || !ValueList[ValueID]) | ||||
2018 | return error("Invalid record"); | ||||
2019 | Value *V = ValueList[ValueID]; | ||||
2020 | |||||
2021 | StringRef NameStr(ValueName.data(), ValueName.size()); | ||||
2022 | if (NameStr.find_first_of(0) != StringRef::npos) | ||||
2023 | return error("Invalid value name"); | ||||
2024 | V->setName(NameStr); | ||||
2025 | auto *GO = dyn_cast<GlobalObject>(V); | ||||
2026 | if (GO) { | ||||
2027 | if (GO->getComdat() == reinterpret_cast<Comdat *>(1)) { | ||||
2028 | if (TT.supportsCOMDAT()) | ||||
2029 | GO->setComdat(TheModule->getOrInsertComdat(V->getName())); | ||||
2030 | else | ||||
2031 | GO->setComdat(nullptr); | ||||
2032 | } | ||||
2033 | } | ||||
2034 | return V; | ||||
2035 | } | ||||
2036 | |||||
2037 | /// Helper to note and return the current location, and jump to the given | ||||
2038 | /// offset. | ||||
2039 | static Expected<uint64_t> jumpToValueSymbolTable(uint64_t Offset, | ||||
2040 | BitstreamCursor &Stream) { | ||||
2041 | // Save the current parsing location so we can jump back at the end | ||||
2042 | // of the VST read. | ||||
2043 | uint64_t CurrentBit = Stream.GetCurrentBitNo(); | ||||
2044 | if (Error JumpFailed = Stream.JumpToBit(Offset * 32)) | ||||
2045 | return std::move(JumpFailed); | ||||
2046 | Expected<BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
2047 | if (!MaybeEntry) | ||||
2048 | return MaybeEntry.takeError(); | ||||
2049 | assert(MaybeEntry.get().Kind == BitstreamEntry::SubBlock)((MaybeEntry.get().Kind == BitstreamEntry::SubBlock) ? static_cast <void> (0) : __assert_fail ("MaybeEntry.get().Kind == BitstreamEntry::SubBlock" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2049, __PRETTY_FUNCTION__)); | ||||
2050 | assert(MaybeEntry.get().ID == bitc::VALUE_SYMTAB_BLOCK_ID)((MaybeEntry.get().ID == bitc::VALUE_SYMTAB_BLOCK_ID) ? static_cast <void> (0) : __assert_fail ("MaybeEntry.get().ID == bitc::VALUE_SYMTAB_BLOCK_ID" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2050, __PRETTY_FUNCTION__)); | ||||
2051 | return CurrentBit; | ||||
2052 | } | ||||
2053 | |||||
2054 | void BitcodeReader::setDeferredFunctionInfo(unsigned FuncBitcodeOffsetDelta, | ||||
2055 | Function *F, | ||||
2056 | ArrayRef<uint64_t> Record) { | ||||
2057 | // Note that we subtract 1 here because the offset is relative to one word | ||||
2058 | // before the start of the identification or module block, which was | ||||
2059 | // historically always the start of the regular bitcode header. | ||||
2060 | uint64_t FuncWordOffset = Record[1] - 1; | ||||
2061 | uint64_t FuncBitOffset = FuncWordOffset * 32; | ||||
2062 | DeferredFunctionInfo[F] = FuncBitOffset + FuncBitcodeOffsetDelta; | ||||
2063 | // Set the LastFunctionBlockBit to point to the last function block. | ||||
2064 | // Later when parsing is resumed after function materialization, | ||||
2065 | // we can simply skip that last function block. | ||||
2066 | if (FuncBitOffset > LastFunctionBlockBit) | ||||
2067 | LastFunctionBlockBit = FuncBitOffset; | ||||
2068 | } | ||||
2069 | |||||
2070 | /// Read a new-style GlobalValue symbol table. | ||||
2071 | Error BitcodeReader::parseGlobalValueSymbolTable() { | ||||
2072 | unsigned FuncBitcodeOffsetDelta = | ||||
2073 | Stream.getAbbrevIDWidth() + bitc::BlockIDWidth; | ||||
2074 | |||||
2075 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) | ||||
2076 | return Err; | ||||
2077 | |||||
2078 | SmallVector<uint64_t, 64> Record; | ||||
2079 | while (true) { | ||||
2080 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
2081 | if (!MaybeEntry) | ||||
2082 | return MaybeEntry.takeError(); | ||||
2083 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
2084 | |||||
2085 | switch (Entry.Kind) { | ||||
2086 | case BitstreamEntry::SubBlock: | ||||
2087 | case BitstreamEntry::Error: | ||||
2088 | return error("Malformed block"); | ||||
2089 | case BitstreamEntry::EndBlock: | ||||
2090 | return Error::success(); | ||||
2091 | case BitstreamEntry::Record: | ||||
2092 | break; | ||||
2093 | } | ||||
2094 | |||||
2095 | Record.clear(); | ||||
2096 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
2097 | if (!MaybeRecord) | ||||
2098 | return MaybeRecord.takeError(); | ||||
2099 | switch (MaybeRecord.get()) { | ||||
2100 | case bitc::VST_CODE_FNENTRY: // [valueid, offset] | ||||
2101 | setDeferredFunctionInfo(FuncBitcodeOffsetDelta, | ||||
2102 | cast<Function>(ValueList[Record[0]]), Record); | ||||
2103 | break; | ||||
2104 | } | ||||
2105 | } | ||||
2106 | } | ||||
2107 | |||||
2108 | /// Parse the value symbol table at either the current parsing location or | ||||
2109 | /// at the given bit offset if provided. | ||||
2110 | Error BitcodeReader::parseValueSymbolTable(uint64_t Offset) { | ||||
2111 | uint64_t CurrentBit; | ||||
2112 | // Pass in the Offset to distinguish between calling for the module-level | ||||
2113 | // VST (where we want to jump to the VST offset) and the function-level | ||||
2114 | // VST (where we don't). | ||||
2115 | if (Offset > 0) { | ||||
2116 | Expected<uint64_t> MaybeCurrentBit = jumpToValueSymbolTable(Offset, Stream); | ||||
2117 | if (!MaybeCurrentBit) | ||||
2118 | return MaybeCurrentBit.takeError(); | ||||
2119 | CurrentBit = MaybeCurrentBit.get(); | ||||
2120 | // If this module uses a string table, read this as a module-level VST. | ||||
2121 | if (UseStrtab) { | ||||
2122 | if (Error Err = parseGlobalValueSymbolTable()) | ||||
2123 | return Err; | ||||
2124 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) | ||||
2125 | return JumpFailed; | ||||
2126 | return Error::success(); | ||||
2127 | } | ||||
2128 | // Otherwise, the VST will be in a similar format to a function-level VST, | ||||
2129 | // and will contain symbol names. | ||||
2130 | } | ||||
2131 | |||||
2132 | // Compute the delta between the bitcode indices in the VST (the word offset | ||||
2133 | // to the word-aligned ENTER_SUBBLOCK for the function block, and that | ||||
2134 | // expected by the lazy reader. The reader's EnterSubBlock expects to have | ||||
2135 | // already read the ENTER_SUBBLOCK code (size getAbbrevIDWidth) and BlockID | ||||
2136 | // (size BlockIDWidth). Note that we access the stream's AbbrevID width here | ||||
2137 | // just before entering the VST subblock because: 1) the EnterSubBlock | ||||
2138 | // changes the AbbrevID width; 2) the VST block is nested within the same | ||||
2139 | // outer MODULE_BLOCK as the FUNCTION_BLOCKs and therefore have the same | ||||
2140 | // AbbrevID width before calling EnterSubBlock; and 3) when we want to | ||||
2141 | // jump to the FUNCTION_BLOCK using this offset later, we don't want | ||||
2142 | // to rely on the stream's AbbrevID width being that of the MODULE_BLOCK. | ||||
2143 | unsigned FuncBitcodeOffsetDelta = | ||||
2144 | Stream.getAbbrevIDWidth() + bitc::BlockIDWidth; | ||||
2145 | |||||
2146 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) | ||||
2147 | return Err; | ||||
2148 | |||||
2149 | SmallVector<uint64_t, 64> Record; | ||||
2150 | |||||
2151 | Triple TT(TheModule->getTargetTriple()); | ||||
2152 | |||||
2153 | // Read all the records for this value table. | ||||
2154 | SmallString<128> ValueName; | ||||
2155 | |||||
2156 | while (true) { | ||||
2157 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
2158 | if (!MaybeEntry) | ||||
2159 | return MaybeEntry.takeError(); | ||||
2160 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
2161 | |||||
2162 | switch (Entry.Kind) { | ||||
2163 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
2164 | case BitstreamEntry::Error: | ||||
2165 | return error("Malformed block"); | ||||
2166 | case BitstreamEntry::EndBlock: | ||||
2167 | if (Offset > 0) | ||||
2168 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) | ||||
2169 | return JumpFailed; | ||||
2170 | return Error::success(); | ||||
2171 | case BitstreamEntry::Record: | ||||
2172 | // The interesting case. | ||||
2173 | break; | ||||
2174 | } | ||||
2175 | |||||
2176 | // Read a record. | ||||
2177 | Record.clear(); | ||||
2178 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
2179 | if (!MaybeRecord) | ||||
2180 | return MaybeRecord.takeError(); | ||||
2181 | switch (MaybeRecord.get()) { | ||||
2182 | default: // Default behavior: unknown type. | ||||
2183 | break; | ||||
2184 | case bitc::VST_CODE_ENTRY: { // VST_CODE_ENTRY: [valueid, namechar x N] | ||||
2185 | Expected<Value *> ValOrErr = recordValue(Record, 1, TT); | ||||
2186 | if (Error Err = ValOrErr.takeError()) | ||||
2187 | return Err; | ||||
2188 | ValOrErr.get(); | ||||
2189 | break; | ||||
2190 | } | ||||
2191 | case bitc::VST_CODE_FNENTRY: { | ||||
2192 | // VST_CODE_FNENTRY: [valueid, offset, namechar x N] | ||||
2193 | Expected<Value *> ValOrErr = recordValue(Record, 2, TT); | ||||
2194 | if (Error Err = ValOrErr.takeError()) | ||||
2195 | return Err; | ||||
2196 | Value *V = ValOrErr.get(); | ||||
2197 | |||||
2198 | // Ignore function offsets emitted for aliases of functions in older | ||||
2199 | // versions of LLVM. | ||||
2200 | if (auto *F = dyn_cast<Function>(V)) | ||||
2201 | setDeferredFunctionInfo(FuncBitcodeOffsetDelta, F, Record); | ||||
2202 | break; | ||||
2203 | } | ||||
2204 | case bitc::VST_CODE_BBENTRY: { | ||||
2205 | if (convertToString(Record, 1, ValueName)) | ||||
2206 | return error("Invalid record"); | ||||
2207 | BasicBlock *BB = getBasicBlock(Record[0]); | ||||
2208 | if (!BB) | ||||
2209 | return error("Invalid record"); | ||||
2210 | |||||
2211 | BB->setName(StringRef(ValueName.data(), ValueName.size())); | ||||
2212 | ValueName.clear(); | ||||
2213 | break; | ||||
2214 | } | ||||
2215 | } | ||||
2216 | } | ||||
2217 | } | ||||
2218 | |||||
2219 | /// Decode a signed value stored with the sign bit in the LSB for dense VBR | ||||
2220 | /// encoding. | ||||
2221 | uint64_t BitcodeReader::decodeSignRotatedValue(uint64_t V) { | ||||
2222 | if ((V & 1) == 0) | ||||
2223 | return V >> 1; | ||||
2224 | if (V != 1) | ||||
2225 | return -(V >> 1); | ||||
2226 | // There is no such thing as -0 with integers. "-0" really means MININT. | ||||
2227 | return 1ULL << 63; | ||||
2228 | } | ||||
2229 | |||||
2230 | /// Resolve all of the initializers for global values and aliases that we can. | ||||
2231 | Error BitcodeReader::resolveGlobalAndIndirectSymbolInits() { | ||||
2232 | std::vector<std::pair<GlobalVariable *, unsigned>> GlobalInitWorklist; | ||||
2233 | std::vector<std::pair<GlobalIndirectSymbol *, unsigned>> | ||||
2234 | IndirectSymbolInitWorklist; | ||||
2235 | std::vector<std::pair<Function *, unsigned>> FunctionPrefixWorklist; | ||||
2236 | std::vector<std::pair<Function *, unsigned>> FunctionPrologueWorklist; | ||||
2237 | std::vector<std::pair<Function *, unsigned>> FunctionPersonalityFnWorklist; | ||||
2238 | |||||
2239 | GlobalInitWorklist.swap(GlobalInits); | ||||
2240 | IndirectSymbolInitWorklist.swap(IndirectSymbolInits); | ||||
2241 | FunctionPrefixWorklist.swap(FunctionPrefixes); | ||||
2242 | FunctionPrologueWorklist.swap(FunctionPrologues); | ||||
2243 | FunctionPersonalityFnWorklist.swap(FunctionPersonalityFns); | ||||
2244 | |||||
2245 | while (!GlobalInitWorklist.empty()) { | ||||
2246 | unsigned ValID = GlobalInitWorklist.back().second; | ||||
2247 | if (ValID >= ValueList.size()) { | ||||
2248 | // Not ready to resolve this yet, it requires something later in the file. | ||||
2249 | GlobalInits.push_back(GlobalInitWorklist.back()); | ||||
2250 | } else { | ||||
2251 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) | ||||
2252 | GlobalInitWorklist.back().first->setInitializer(C); | ||||
2253 | else | ||||
2254 | return error("Expected a constant"); | ||||
2255 | } | ||||
2256 | GlobalInitWorklist.pop_back(); | ||||
2257 | } | ||||
2258 | |||||
2259 | while (!IndirectSymbolInitWorklist.empty()) { | ||||
2260 | unsigned ValID = IndirectSymbolInitWorklist.back().second; | ||||
2261 | if (ValID >= ValueList.size()) { | ||||
2262 | IndirectSymbolInits.push_back(IndirectSymbolInitWorklist.back()); | ||||
2263 | } else { | ||||
2264 | Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID]); | ||||
2265 | if (!C) | ||||
2266 | return error("Expected a constant"); | ||||
2267 | GlobalIndirectSymbol *GIS = IndirectSymbolInitWorklist.back().first; | ||||
2268 | if (isa<GlobalAlias>(GIS) && C->getType() != GIS->getType()) | ||||
2269 | return error("Alias and aliasee types don't match"); | ||||
2270 | GIS->setIndirectSymbol(C); | ||||
2271 | } | ||||
2272 | IndirectSymbolInitWorklist.pop_back(); | ||||
2273 | } | ||||
2274 | |||||
2275 | while (!FunctionPrefixWorklist.empty()) { | ||||
2276 | unsigned ValID = FunctionPrefixWorklist.back().second; | ||||
2277 | if (ValID >= ValueList.size()) { | ||||
2278 | FunctionPrefixes.push_back(FunctionPrefixWorklist.back()); | ||||
2279 | } else { | ||||
2280 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) | ||||
2281 | FunctionPrefixWorklist.back().first->setPrefixData(C); | ||||
2282 | else | ||||
2283 | return error("Expected a constant"); | ||||
2284 | } | ||||
2285 | FunctionPrefixWorklist.pop_back(); | ||||
2286 | } | ||||
2287 | |||||
2288 | while (!FunctionPrologueWorklist.empty()) { | ||||
2289 | unsigned ValID = FunctionPrologueWorklist.back().second; | ||||
2290 | if (ValID >= ValueList.size()) { | ||||
2291 | FunctionPrologues.push_back(FunctionPrologueWorklist.back()); | ||||
2292 | } else { | ||||
2293 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) | ||||
2294 | FunctionPrologueWorklist.back().first->setPrologueData(C); | ||||
2295 | else | ||||
2296 | return error("Expected a constant"); | ||||
2297 | } | ||||
2298 | FunctionPrologueWorklist.pop_back(); | ||||
2299 | } | ||||
2300 | |||||
2301 | while (!FunctionPersonalityFnWorklist.empty()) { | ||||
2302 | unsigned ValID = FunctionPersonalityFnWorklist.back().second; | ||||
2303 | if (ValID >= ValueList.size()) { | ||||
2304 | FunctionPersonalityFns.push_back(FunctionPersonalityFnWorklist.back()); | ||||
2305 | } else { | ||||
2306 | if (Constant *C = dyn_cast_or_null<Constant>(ValueList[ValID])) | ||||
2307 | FunctionPersonalityFnWorklist.back().first->setPersonalityFn(C); | ||||
2308 | else | ||||
2309 | return error("Expected a constant"); | ||||
2310 | } | ||||
2311 | FunctionPersonalityFnWorklist.pop_back(); | ||||
2312 | } | ||||
2313 | |||||
2314 | return Error::success(); | ||||
2315 | } | ||||
2316 | |||||
2317 | static APInt readWideAPInt(ArrayRef<uint64_t> Vals, unsigned TypeBits) { | ||||
2318 | SmallVector<uint64_t, 8> Words(Vals.size()); | ||||
2319 | transform(Vals, Words.begin(), | ||||
2320 | BitcodeReader::decodeSignRotatedValue); | ||||
2321 | |||||
2322 | return APInt(TypeBits, Words); | ||||
2323 | } | ||||
2324 | |||||
2325 | Error BitcodeReader::parseConstants() { | ||||
2326 | if (Error Err = Stream.EnterSubBlock(bitc::CONSTANTS_BLOCK_ID)) | ||||
2327 | return Err; | ||||
2328 | |||||
2329 | SmallVector<uint64_t, 64> Record; | ||||
2330 | |||||
2331 | // Read all the records for this value table. | ||||
2332 | Type *CurTy = Type::getInt32Ty(Context); | ||||
2333 | Type *CurFullTy = Type::getInt32Ty(Context); | ||||
2334 | unsigned NextCstNo = ValueList.size(); | ||||
2335 | |||||
2336 | while (true) { | ||||
2337 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
2338 | if (!MaybeEntry) | ||||
2339 | return MaybeEntry.takeError(); | ||||
2340 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
2341 | |||||
2342 | switch (Entry.Kind) { | ||||
2343 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
2344 | case BitstreamEntry::Error: | ||||
2345 | return error("Malformed block"); | ||||
2346 | case BitstreamEntry::EndBlock: | ||||
2347 | if (NextCstNo != ValueList.size()) | ||||
2348 | return error("Invalid constant reference"); | ||||
2349 | |||||
2350 | // Once all the constants have been read, go through and resolve forward | ||||
2351 | // references. | ||||
2352 | ValueList.resolveConstantForwardRefs(); | ||||
2353 | return Error::success(); | ||||
2354 | case BitstreamEntry::Record: | ||||
2355 | // The interesting case. | ||||
2356 | break; | ||||
2357 | } | ||||
2358 | |||||
2359 | // Read a record. | ||||
2360 | Record.clear(); | ||||
2361 | Type *VoidType = Type::getVoidTy(Context); | ||||
2362 | Value *V = nullptr; | ||||
2363 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | ||||
2364 | if (!MaybeBitCode) | ||||
2365 | return MaybeBitCode.takeError(); | ||||
2366 | switch (unsigned BitCode = MaybeBitCode.get()) { | ||||
2367 | default: // Default behavior: unknown constant | ||||
2368 | case bitc::CST_CODE_UNDEF: // UNDEF | ||||
2369 | V = UndefValue::get(CurTy); | ||||
2370 | break; | ||||
2371 | case bitc::CST_CODE_SETTYPE: // SETTYPE: [typeid] | ||||
2372 | if (Record.empty()) | ||||
2373 | return error("Invalid record"); | ||||
2374 | if (Record[0] >= TypeList.size() || !TypeList[Record[0]]) | ||||
2375 | return error("Invalid record"); | ||||
2376 | if (TypeList[Record[0]] == VoidType) | ||||
2377 | return error("Invalid constant type"); | ||||
2378 | CurFullTy = TypeList[Record[0]]; | ||||
2379 | CurTy = flattenPointerTypes(CurFullTy); | ||||
2380 | continue; // Skip the ValueList manipulation. | ||||
2381 | case bitc::CST_CODE_NULL: // NULL | ||||
2382 | if (CurTy->isVoidTy() || CurTy->isFunctionTy() || CurTy->isLabelTy()) | ||||
2383 | return error("Invalid type for a constant null value"); | ||||
2384 | V = Constant::getNullValue(CurTy); | ||||
2385 | break; | ||||
2386 | case bitc::CST_CODE_INTEGER: // INTEGER: [intval] | ||||
2387 | if (!CurTy->isIntegerTy() || Record.empty()) | ||||
2388 | return error("Invalid record"); | ||||
2389 | V = ConstantInt::get(CurTy, decodeSignRotatedValue(Record[0])); | ||||
2390 | break; | ||||
2391 | case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n x intval] | ||||
2392 | if (!CurTy->isIntegerTy() || Record.empty()) | ||||
2393 | return error("Invalid record"); | ||||
2394 | |||||
2395 | APInt VInt = | ||||
2396 | readWideAPInt(Record, cast<IntegerType>(CurTy)->getBitWidth()); | ||||
2397 | V = ConstantInt::get(Context, VInt); | ||||
2398 | |||||
2399 | break; | ||||
2400 | } | ||||
2401 | case bitc::CST_CODE_FLOAT: { // FLOAT: [fpval] | ||||
2402 | if (Record.empty()) | ||||
2403 | return error("Invalid record"); | ||||
2404 | if (CurTy->isHalfTy()) | ||||
2405 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEhalf(), | ||||
2406 | APInt(16, (uint16_t)Record[0]))); | ||||
2407 | else if (CurTy->isFloatTy()) | ||||
2408 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEsingle(), | ||||
2409 | APInt(32, (uint32_t)Record[0]))); | ||||
2410 | else if (CurTy->isDoubleTy()) | ||||
2411 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEdouble(), | ||||
2412 | APInt(64, Record[0]))); | ||||
2413 | else if (CurTy->isX86_FP80Ty()) { | ||||
2414 | // Bits are not stored the same way as a normal i80 APInt, compensate. | ||||
2415 | uint64_t Rearrange[2]; | ||||
2416 | Rearrange[0] = (Record[1] & 0xffffLL) | (Record[0] << 16); | ||||
2417 | Rearrange[1] = Record[0] >> 48; | ||||
2418 | V = ConstantFP::get(Context, APFloat(APFloat::x87DoubleExtended(), | ||||
2419 | APInt(80, Rearrange))); | ||||
2420 | } else if (CurTy->isFP128Ty()) | ||||
2421 | V = ConstantFP::get(Context, APFloat(APFloat::IEEEquad(), | ||||
2422 | APInt(128, Record))); | ||||
2423 | else if (CurTy->isPPC_FP128Ty()) | ||||
2424 | V = ConstantFP::get(Context, APFloat(APFloat::PPCDoubleDouble(), | ||||
2425 | APInt(128, Record))); | ||||
2426 | else | ||||
2427 | V = UndefValue::get(CurTy); | ||||
2428 | break; | ||||
2429 | } | ||||
2430 | |||||
2431 | case bitc::CST_CODE_AGGREGATE: {// AGGREGATE: [n x value number] | ||||
2432 | if (Record.empty()) | ||||
2433 | return error("Invalid record"); | ||||
2434 | |||||
2435 | unsigned Size = Record.size(); | ||||
2436 | SmallVector<Constant*, 16> Elts; | ||||
2437 | |||||
2438 | if (StructType *STy = dyn_cast<StructType>(CurTy)) { | ||||
2439 | for (unsigned i = 0; i != Size; ++i) | ||||
2440 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], | ||||
2441 | STy->getElementType(i))); | ||||
2442 | V = ConstantStruct::get(STy, Elts); | ||||
2443 | } else if (ArrayType *ATy = dyn_cast<ArrayType>(CurTy)) { | ||||
2444 | Type *EltTy = ATy->getElementType(); | ||||
2445 | for (unsigned i = 0; i != Size; ++i) | ||||
2446 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy)); | ||||
2447 | V = ConstantArray::get(ATy, Elts); | ||||
2448 | } else if (VectorType *VTy = dyn_cast<VectorType>(CurTy)) { | ||||
2449 | Type *EltTy = VTy->getElementType(); | ||||
2450 | for (unsigned i = 0; i != Size; ++i) | ||||
2451 | Elts.push_back(ValueList.getConstantFwdRef(Record[i], EltTy)); | ||||
2452 | V = ConstantVector::get(Elts); | ||||
2453 | } else { | ||||
2454 | V = UndefValue::get(CurTy); | ||||
2455 | } | ||||
2456 | break; | ||||
2457 | } | ||||
2458 | case bitc::CST_CODE_STRING: // STRING: [values] | ||||
2459 | case bitc::CST_CODE_CSTRING: { // CSTRING: [values] | ||||
2460 | if (Record.empty()) | ||||
2461 | return error("Invalid record"); | ||||
2462 | |||||
2463 | SmallString<16> Elts(Record.begin(), Record.end()); | ||||
2464 | V = ConstantDataArray::getString(Context, Elts, | ||||
2465 | BitCode == bitc::CST_CODE_CSTRING); | ||||
2466 | break; | ||||
2467 | } | ||||
2468 | case bitc::CST_CODE_DATA: {// DATA: [n x value] | ||||
2469 | if (Record.empty()) | ||||
2470 | return error("Invalid record"); | ||||
2471 | |||||
2472 | Type *EltTy = cast<SequentialType>(CurTy)->getElementType(); | ||||
2473 | if (EltTy->isIntegerTy(8)) { | ||||
2474 | SmallVector<uint8_t, 16> Elts(Record.begin(), Record.end()); | ||||
2475 | if (isa<VectorType>(CurTy)) | ||||
2476 | V = ConstantDataVector::get(Context, Elts); | ||||
2477 | else | ||||
2478 | V = ConstantDataArray::get(Context, Elts); | ||||
2479 | } else if (EltTy->isIntegerTy(16)) { | ||||
2480 | SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end()); | ||||
2481 | if (isa<VectorType>(CurTy)) | ||||
2482 | V = ConstantDataVector::get(Context, Elts); | ||||
2483 | else | ||||
2484 | V = ConstantDataArray::get(Context, Elts); | ||||
2485 | } else if (EltTy->isIntegerTy(32)) { | ||||
2486 | SmallVector<uint32_t, 16> Elts(Record.begin(), Record.end()); | ||||
2487 | if (isa<VectorType>(CurTy)) | ||||
2488 | V = ConstantDataVector::get(Context, Elts); | ||||
2489 | else | ||||
2490 | V = ConstantDataArray::get(Context, Elts); | ||||
2491 | } else if (EltTy->isIntegerTy(64)) { | ||||
2492 | SmallVector<uint64_t, 16> Elts(Record.begin(), Record.end()); | ||||
2493 | if (isa<VectorType>(CurTy)) | ||||
2494 | V = ConstantDataVector::get(Context, Elts); | ||||
2495 | else | ||||
2496 | V = ConstantDataArray::get(Context, Elts); | ||||
2497 | } else if (EltTy->isHalfTy()) { | ||||
2498 | SmallVector<uint16_t, 16> Elts(Record.begin(), Record.end()); | ||||
2499 | if (isa<VectorType>(CurTy)) | ||||
2500 | V = ConstantDataVector::getFP(Context, Elts); | ||||
2501 | else | ||||
2502 | V = ConstantDataArray::getFP(Context, Elts); | ||||
2503 | } else if (EltTy->isFloatTy()) { | ||||
2504 | SmallVector<uint32_t, 16> Elts(Record.begin(), Record.end()); | ||||
2505 | if (isa<VectorType>(CurTy)) | ||||
2506 | V = ConstantDataVector::getFP(Context, Elts); | ||||
2507 | else | ||||
2508 | V = ConstantDataArray::getFP(Context, Elts); | ||||
2509 | } else if (EltTy->isDoubleTy()) { | ||||
2510 | SmallVector<uint64_t, 16> Elts(Record.begin(), Record.end()); | ||||
2511 | if (isa<VectorType>(CurTy)) | ||||
2512 | V = ConstantDataVector::getFP(Context, Elts); | ||||
2513 | else | ||||
2514 | V = ConstantDataArray::getFP(Context, Elts); | ||||
2515 | } else { | ||||
2516 | return error("Invalid type for value"); | ||||
2517 | } | ||||
2518 | break; | ||||
2519 | } | ||||
2520 | case bitc::CST_CODE_CE_UNOP: { // CE_UNOP: [opcode, opval] | ||||
2521 | if (Record.size() < 2) | ||||
2522 | return error("Invalid record"); | ||||
2523 | int Opc = getDecodedUnaryOpcode(Record[0], CurTy); | ||||
2524 | if (Opc < 0) { | ||||
2525 | V = UndefValue::get(CurTy); // Unknown unop. | ||||
2526 | } else { | ||||
2527 | Constant *LHS = ValueList.getConstantFwdRef(Record[1], CurTy); | ||||
2528 | unsigned Flags = 0; | ||||
2529 | V = ConstantExpr::get(Opc, LHS, Flags); | ||||
2530 | } | ||||
2531 | break; | ||||
2532 | } | ||||
2533 | case bitc::CST_CODE_CE_BINOP: { // CE_BINOP: [opcode, opval, opval] | ||||
2534 | if (Record.size() < 3) | ||||
2535 | return error("Invalid record"); | ||||
2536 | int Opc = getDecodedBinaryOpcode(Record[0], CurTy); | ||||
2537 | if (Opc < 0) { | ||||
2538 | V = UndefValue::get(CurTy); // Unknown binop. | ||||
2539 | } else { | ||||
2540 | Constant *LHS = ValueList.getConstantFwdRef(Record[1], CurTy); | ||||
2541 | Constant *RHS = ValueList.getConstantFwdRef(Record[2], CurTy); | ||||
2542 | unsigned Flags = 0; | ||||
2543 | if (Record.size() >= 4) { | ||||
2544 | if (Opc == Instruction::Add || | ||||
2545 | Opc == Instruction::Sub || | ||||
2546 | Opc == Instruction::Mul || | ||||
2547 | Opc == Instruction::Shl) { | ||||
2548 | if (Record[3] & (1 << bitc::OBO_NO_SIGNED_WRAP)) | ||||
2549 | Flags |= OverflowingBinaryOperator::NoSignedWrap; | ||||
2550 | if (Record[3] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) | ||||
2551 | Flags |= OverflowingBinaryOperator::NoUnsignedWrap; | ||||
2552 | } else if (Opc == Instruction::SDiv || | ||||
2553 | Opc == Instruction::UDiv || | ||||
2554 | Opc == Instruction::LShr || | ||||
2555 | Opc == Instruction::AShr) { | ||||
2556 | if (Record[3] & (1 << bitc::PEO_EXACT)) | ||||
2557 | Flags |= SDivOperator::IsExact; | ||||
2558 | } | ||||
2559 | } | ||||
2560 | V = ConstantExpr::get(Opc, LHS, RHS, Flags); | ||||
2561 | } | ||||
2562 | break; | ||||
2563 | } | ||||
2564 | case bitc::CST_CODE_CE_CAST: { // CE_CAST: [opcode, opty, opval] | ||||
2565 | if (Record.size() < 3) | ||||
2566 | return error("Invalid record"); | ||||
2567 | int Opc = getDecodedCastOpcode(Record[0]); | ||||
2568 | if (Opc < 0) { | ||||
2569 | V = UndefValue::get(CurTy); // Unknown cast. | ||||
2570 | } else { | ||||
2571 | Type *OpTy = getTypeByID(Record[1]); | ||||
2572 | if (!OpTy) | ||||
2573 | return error("Invalid record"); | ||||
2574 | Constant *Op = ValueList.getConstantFwdRef(Record[2], OpTy); | ||||
2575 | V = UpgradeBitCastExpr(Opc, Op, CurTy); | ||||
2576 | if (!V) V = ConstantExpr::getCast(Opc, Op, CurTy); | ||||
2577 | } | ||||
2578 | break; | ||||
2579 | } | ||||
2580 | case bitc::CST_CODE_CE_INBOUNDS_GEP: // [ty, n x operands] | ||||
2581 | case bitc::CST_CODE_CE_GEP: // [ty, n x operands] | ||||
2582 | case bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX: { // [ty, flags, n x | ||||
2583 | // operands] | ||||
2584 | unsigned OpNum = 0; | ||||
2585 | Type *PointeeType = nullptr; | ||||
2586 | if (BitCode == bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX || | ||||
2587 | Record.size() % 2) | ||||
2588 | PointeeType = getTypeByID(Record[OpNum++]); | ||||
2589 | |||||
2590 | bool InBounds = false; | ||||
2591 | Optional<unsigned> InRangeIndex; | ||||
2592 | if (BitCode == bitc::CST_CODE_CE_GEP_WITH_INRANGE_INDEX) { | ||||
2593 | uint64_t Op = Record[OpNum++]; | ||||
2594 | InBounds = Op & 1; | ||||
2595 | InRangeIndex = Op >> 1; | ||||
2596 | } else if (BitCode == bitc::CST_CODE_CE_INBOUNDS_GEP) | ||||
2597 | InBounds = true; | ||||
2598 | |||||
2599 | SmallVector<Constant*, 16> Elts; | ||||
2600 | Type *Elt0FullTy = nullptr; | ||||
2601 | while (OpNum != Record.size()) { | ||||
2602 | if (!Elt0FullTy) | ||||
2603 | Elt0FullTy = getFullyStructuredTypeByID(Record[OpNum]); | ||||
2604 | Type *ElTy = getTypeByID(Record[OpNum++]); | ||||
2605 | if (!ElTy) | ||||
2606 | return error("Invalid record"); | ||||
2607 | Elts.push_back(ValueList.getConstantFwdRef(Record[OpNum++], ElTy)); | ||||
2608 | } | ||||
2609 | |||||
2610 | if (Elts.size() < 1) | ||||
2611 | return error("Invalid gep with no operands"); | ||||
2612 | |||||
2613 | Type *ImplicitPointeeType = | ||||
2614 | getPointerElementFlatType(Elt0FullTy->getScalarType()); | ||||
2615 | if (!PointeeType) | ||||
2616 | PointeeType = ImplicitPointeeType; | ||||
2617 | else if (PointeeType != ImplicitPointeeType) | ||||
2618 | return error("Explicit gep operator type does not match pointee type " | ||||
2619 | "of pointer operand"); | ||||
2620 | |||||
2621 | ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end()); | ||||
2622 | V = ConstantExpr::getGetElementPtr(PointeeType, Elts[0], Indices, | ||||
2623 | InBounds, InRangeIndex); | ||||
2624 | break; | ||||
2625 | } | ||||
2626 | case bitc::CST_CODE_CE_SELECT: { // CE_SELECT: [opval#, opval#, opval#] | ||||
2627 | if (Record.size() < 3) | ||||
2628 | return error("Invalid record"); | ||||
2629 | |||||
2630 | Type *SelectorTy = Type::getInt1Ty(Context); | ||||
2631 | |||||
2632 | // The selector might be an i1 or an <n x i1> | ||||
2633 | // Get the type from the ValueList before getting a forward ref. | ||||
2634 | if (VectorType *VTy = dyn_cast<VectorType>(CurTy)) | ||||
2635 | if (Value *V = ValueList[Record[0]]) | ||||
2636 | if (SelectorTy != V->getType()) | ||||
2637 | SelectorTy = VectorType::get(SelectorTy, VTy->getNumElements()); | ||||
2638 | |||||
2639 | V = ConstantExpr::getSelect(ValueList.getConstantFwdRef(Record[0], | ||||
2640 | SelectorTy), | ||||
2641 | ValueList.getConstantFwdRef(Record[1],CurTy), | ||||
2642 | ValueList.getConstantFwdRef(Record[2],CurTy)); | ||||
2643 | break; | ||||
2644 | } | ||||
2645 | case bitc::CST_CODE_CE_EXTRACTELT | ||||
2646 | : { // CE_EXTRACTELT: [opty, opval, opty, opval] | ||||
2647 | if (Record.size() < 3) | ||||
2648 | return error("Invalid record"); | ||||
2649 | VectorType *OpTy = | ||||
2650 | dyn_cast_or_null<VectorType>(getTypeByID(Record[0])); | ||||
2651 | if (!OpTy) | ||||
2652 | return error("Invalid record"); | ||||
2653 | Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); | ||||
2654 | Constant *Op1 = nullptr; | ||||
2655 | if (Record.size() == 4) { | ||||
2656 | Type *IdxTy = getTypeByID(Record[2]); | ||||
2657 | if (!IdxTy) | ||||
2658 | return error("Invalid record"); | ||||
2659 | Op1 = ValueList.getConstantFwdRef(Record[3], IdxTy); | ||||
2660 | } else // TODO: Remove with llvm 4.0 | ||||
2661 | Op1 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context)); | ||||
2662 | if (!Op1) | ||||
2663 | return error("Invalid record"); | ||||
2664 | V = ConstantExpr::getExtractElement(Op0, Op1); | ||||
2665 | break; | ||||
2666 | } | ||||
2667 | case bitc::CST_CODE_CE_INSERTELT | ||||
2668 | : { // CE_INSERTELT: [opval, opval, opty, opval] | ||||
2669 | VectorType *OpTy = dyn_cast<VectorType>(CurTy); | ||||
2670 | if (Record.size() < 3 || !OpTy) | ||||
2671 | return error("Invalid record"); | ||||
2672 | Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy); | ||||
2673 | Constant *Op1 = ValueList.getConstantFwdRef(Record[1], | ||||
2674 | OpTy->getElementType()); | ||||
2675 | Constant *Op2 = nullptr; | ||||
2676 | if (Record.size() == 4) { | ||||
2677 | Type *IdxTy = getTypeByID(Record[2]); | ||||
2678 | if (!IdxTy) | ||||
2679 | return error("Invalid record"); | ||||
2680 | Op2 = ValueList.getConstantFwdRef(Record[3], IdxTy); | ||||
2681 | } else // TODO: Remove with llvm 4.0 | ||||
2682 | Op2 = ValueList.getConstantFwdRef(Record[2], Type::getInt32Ty(Context)); | ||||
2683 | if (!Op2) | ||||
2684 | return error("Invalid record"); | ||||
2685 | V = ConstantExpr::getInsertElement(Op0, Op1, Op2); | ||||
2686 | break; | ||||
2687 | } | ||||
2688 | case bitc::CST_CODE_CE_SHUFFLEVEC: { // CE_SHUFFLEVEC: [opval, opval, opval] | ||||
2689 | VectorType *OpTy = dyn_cast<VectorType>(CurTy); | ||||
2690 | if (Record.size() < 3 || !OpTy) | ||||
2691 | return error("Invalid record"); | ||||
2692 | Constant *Op0 = ValueList.getConstantFwdRef(Record[0], OpTy); | ||||
2693 | Constant *Op1 = ValueList.getConstantFwdRef(Record[1], OpTy); | ||||
2694 | Type *ShufTy = VectorType::get(Type::getInt32Ty(Context), | ||||
2695 | OpTy->getNumElements()); | ||||
2696 | Constant *Op2 = ValueList.getConstantFwdRef(Record[2], ShufTy); | ||||
2697 | V = ConstantExpr::getShuffleVector(Op0, Op1, Op2); | ||||
2698 | break; | ||||
2699 | } | ||||
2700 | case bitc::CST_CODE_CE_SHUFVEC_EX: { // [opty, opval, opval, opval] | ||||
2701 | VectorType *RTy = dyn_cast<VectorType>(CurTy); | ||||
2702 | VectorType *OpTy = | ||||
2703 | dyn_cast_or_null<VectorType>(getTypeByID(Record[0])); | ||||
2704 | if (Record.size() < 4 || !RTy || !OpTy) | ||||
2705 | return error("Invalid record"); | ||||
2706 | Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); | ||||
2707 | Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy); | ||||
2708 | Type *ShufTy = VectorType::get(Type::getInt32Ty(Context), | ||||
2709 | RTy->getNumElements()); | ||||
2710 | Constant *Op2 = ValueList.getConstantFwdRef(Record[3], ShufTy); | ||||
2711 | V = ConstantExpr::getShuffleVector(Op0, Op1, Op2); | ||||
2712 | break; | ||||
2713 | } | ||||
2714 | case bitc::CST_CODE_CE_CMP: { // CE_CMP: [opty, opval, opval, pred] | ||||
2715 | if (Record.size() < 4) | ||||
2716 | return error("Invalid record"); | ||||
2717 | Type *OpTy = getTypeByID(Record[0]); | ||||
2718 | if (!OpTy) | ||||
2719 | return error("Invalid record"); | ||||
2720 | Constant *Op0 = ValueList.getConstantFwdRef(Record[1], OpTy); | ||||
2721 | Constant *Op1 = ValueList.getConstantFwdRef(Record[2], OpTy); | ||||
2722 | |||||
2723 | if (OpTy->isFPOrFPVectorTy()) | ||||
2724 | V = ConstantExpr::getFCmp(Record[3], Op0, Op1); | ||||
2725 | else | ||||
2726 | V = ConstantExpr::getICmp(Record[3], Op0, Op1); | ||||
2727 | break; | ||||
2728 | } | ||||
2729 | // This maintains backward compatibility, pre-asm dialect keywords. | ||||
2730 | // FIXME: Remove with the 4.0 release. | ||||
2731 | case bitc::CST_CODE_INLINEASM_OLD: { | ||||
2732 | if (Record.size() < 2) | ||||
2733 | return error("Invalid record"); | ||||
2734 | std::string AsmStr, ConstrStr; | ||||
2735 | bool HasSideEffects = Record[0] & 1; | ||||
2736 | bool IsAlignStack = Record[0] >> 1; | ||||
2737 | unsigned AsmStrSize = Record[1]; | ||||
2738 | if (2+AsmStrSize >= Record.size()) | ||||
2739 | return error("Invalid record"); | ||||
2740 | unsigned ConstStrSize = Record[2+AsmStrSize]; | ||||
2741 | if (3+AsmStrSize+ConstStrSize > Record.size()) | ||||
2742 | return error("Invalid record"); | ||||
2743 | |||||
2744 | for (unsigned i = 0; i != AsmStrSize; ++i) | ||||
2745 | AsmStr += (char)Record[2+i]; | ||||
2746 | for (unsigned i = 0; i != ConstStrSize; ++i) | ||||
2747 | ConstrStr += (char)Record[3+AsmStrSize+i]; | ||||
2748 | UpgradeInlineAsmString(&AsmStr); | ||||
2749 | V = InlineAsm::get( | ||||
2750 | cast<FunctionType>(getPointerElementFlatType(CurFullTy)), AsmStr, | ||||
2751 | ConstrStr, HasSideEffects, IsAlignStack); | ||||
2752 | break; | ||||
2753 | } | ||||
2754 | // This version adds support for the asm dialect keywords (e.g., | ||||
2755 | // inteldialect). | ||||
2756 | case bitc::CST_CODE_INLINEASM: { | ||||
2757 | if (Record.size() < 2) | ||||
2758 | return error("Invalid record"); | ||||
2759 | std::string AsmStr, ConstrStr; | ||||
2760 | bool HasSideEffects = Record[0] & 1; | ||||
2761 | bool IsAlignStack = (Record[0] >> 1) & 1; | ||||
2762 | unsigned AsmDialect = Record[0] >> 2; | ||||
2763 | unsigned AsmStrSize = Record[1]; | ||||
2764 | if (2+AsmStrSize >= Record.size()) | ||||
2765 | return error("Invalid record"); | ||||
2766 | unsigned ConstStrSize = Record[2+AsmStrSize]; | ||||
2767 | if (3+AsmStrSize+ConstStrSize > Record.size()) | ||||
2768 | return error("Invalid record"); | ||||
2769 | |||||
2770 | for (unsigned i = 0; i != AsmStrSize; ++i) | ||||
2771 | AsmStr += (char)Record[2+i]; | ||||
2772 | for (unsigned i = 0; i != ConstStrSize; ++i) | ||||
2773 | ConstrStr += (char)Record[3+AsmStrSize+i]; | ||||
2774 | UpgradeInlineAsmString(&AsmStr); | ||||
2775 | V = InlineAsm::get( | ||||
2776 | cast<FunctionType>(getPointerElementFlatType(CurFullTy)), AsmStr, | ||||
2777 | ConstrStr, HasSideEffects, IsAlignStack, | ||||
2778 | InlineAsm::AsmDialect(AsmDialect)); | ||||
2779 | break; | ||||
2780 | } | ||||
2781 | case bitc::CST_CODE_BLOCKADDRESS:{ | ||||
2782 | if (Record.size() < 3) | ||||
2783 | return error("Invalid record"); | ||||
2784 | Type *FnTy = getTypeByID(Record[0]); | ||||
2785 | if (!FnTy) | ||||
2786 | return error("Invalid record"); | ||||
2787 | Function *Fn = | ||||
2788 | dyn_cast_or_null<Function>(ValueList.getConstantFwdRef(Record[1],FnTy)); | ||||
2789 | if (!Fn) | ||||
2790 | return error("Invalid record"); | ||||
2791 | |||||
2792 | // If the function is already parsed we can insert the block address right | ||||
2793 | // away. | ||||
2794 | BasicBlock *BB; | ||||
2795 | unsigned BBID = Record[2]; | ||||
2796 | if (!BBID) | ||||
2797 | // Invalid reference to entry block. | ||||
2798 | return error("Invalid ID"); | ||||
2799 | if (!Fn->empty()) { | ||||
2800 | Function::iterator BBI = Fn->begin(), BBE = Fn->end(); | ||||
2801 | for (size_t I = 0, E = BBID; I != E; ++I) { | ||||
2802 | if (BBI == BBE) | ||||
2803 | return error("Invalid ID"); | ||||
2804 | ++BBI; | ||||
2805 | } | ||||
2806 | BB = &*BBI; | ||||
2807 | } else { | ||||
2808 | // Otherwise insert a placeholder and remember it so it can be inserted | ||||
2809 | // when the function is parsed. | ||||
2810 | auto &FwdBBs = BasicBlockFwdRefs[Fn]; | ||||
2811 | if (FwdBBs.empty()) | ||||
2812 | BasicBlockFwdRefQueue.push_back(Fn); | ||||
2813 | if (FwdBBs.size() < BBID + 1) | ||||
2814 | FwdBBs.resize(BBID + 1); | ||||
2815 | if (!FwdBBs[BBID]) | ||||
2816 | FwdBBs[BBID] = BasicBlock::Create(Context); | ||||
2817 | BB = FwdBBs[BBID]; | ||||
2818 | } | ||||
2819 | V = BlockAddress::get(Fn, BB); | ||||
2820 | break; | ||||
2821 | } | ||||
2822 | } | ||||
2823 | |||||
2824 | assert(V->getType() == flattenPointerTypes(CurFullTy) &&((V->getType() == flattenPointerTypes(CurFullTy) && "Incorrect fully structured type provided for Constant") ? static_cast <void> (0) : __assert_fail ("V->getType() == flattenPointerTypes(CurFullTy) && \"Incorrect fully structured type provided for Constant\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2825, __PRETTY_FUNCTION__)) | ||||
2825 | "Incorrect fully structured type provided for Constant")((V->getType() == flattenPointerTypes(CurFullTy) && "Incorrect fully structured type provided for Constant") ? static_cast <void> (0) : __assert_fail ("V->getType() == flattenPointerTypes(CurFullTy) && \"Incorrect fully structured type provided for Constant\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2825, __PRETTY_FUNCTION__)); | ||||
2826 | ValueList.assignValue(V, NextCstNo, CurFullTy); | ||||
2827 | ++NextCstNo; | ||||
2828 | } | ||||
2829 | } | ||||
2830 | |||||
2831 | Error BitcodeReader::parseUseLists() { | ||||
2832 | if (Error Err = Stream.EnterSubBlock(bitc::USELIST_BLOCK_ID)) | ||||
2833 | return Err; | ||||
2834 | |||||
2835 | // Read all the records. | ||||
2836 | SmallVector<uint64_t, 64> Record; | ||||
2837 | |||||
2838 | while (true) { | ||||
2839 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
2840 | if (!MaybeEntry) | ||||
2841 | return MaybeEntry.takeError(); | ||||
2842 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
2843 | |||||
2844 | switch (Entry.Kind) { | ||||
2845 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
2846 | case BitstreamEntry::Error: | ||||
2847 | return error("Malformed block"); | ||||
2848 | case BitstreamEntry::EndBlock: | ||||
2849 | return Error::success(); | ||||
2850 | case BitstreamEntry::Record: | ||||
2851 | // The interesting case. | ||||
2852 | break; | ||||
2853 | } | ||||
2854 | |||||
2855 | // Read a use list record. | ||||
2856 | Record.clear(); | ||||
2857 | bool IsBB = false; | ||||
2858 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
2859 | if (!MaybeRecord) | ||||
2860 | return MaybeRecord.takeError(); | ||||
2861 | switch (MaybeRecord.get()) { | ||||
2862 | default: // Default behavior: unknown type. | ||||
2863 | break; | ||||
2864 | case bitc::USELIST_CODE_BB: | ||||
2865 | IsBB = true; | ||||
2866 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
2867 | case bitc::USELIST_CODE_DEFAULT: { | ||||
2868 | unsigned RecordLength = Record.size(); | ||||
2869 | if (RecordLength < 3) | ||||
2870 | // Records should have at least an ID and two indexes. | ||||
2871 | return error("Invalid record"); | ||||
2872 | unsigned ID = Record.back(); | ||||
2873 | Record.pop_back(); | ||||
2874 | |||||
2875 | Value *V; | ||||
2876 | if (IsBB) { | ||||
2877 | assert(ID < FunctionBBs.size() && "Basic block not found")((ID < FunctionBBs.size() && "Basic block not found" ) ? static_cast<void> (0) : __assert_fail ("ID < FunctionBBs.size() && \"Basic block not found\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2877, __PRETTY_FUNCTION__)); | ||||
2878 | V = FunctionBBs[ID]; | ||||
2879 | } else | ||||
2880 | V = ValueList[ID]; | ||||
2881 | unsigned NumUses = 0; | ||||
2882 | SmallDenseMap<const Use *, unsigned, 16> Order; | ||||
2883 | for (const Use &U : V->materialized_uses()) { | ||||
2884 | if (++NumUses > Record.size()) | ||||
2885 | break; | ||||
2886 | Order[&U] = Record[NumUses - 1]; | ||||
2887 | } | ||||
2888 | if (Order.size() != Record.size() || NumUses > Record.size()) | ||||
2889 | // Mismatches can happen if the functions are being materialized lazily | ||||
2890 | // (out-of-order), or a value has been upgraded. | ||||
2891 | break; | ||||
2892 | |||||
2893 | V->sortUseList([&](const Use &L, const Use &R) { | ||||
2894 | return Order.lookup(&L) < Order.lookup(&R); | ||||
2895 | }); | ||||
2896 | break; | ||||
2897 | } | ||||
2898 | } | ||||
2899 | } | ||||
2900 | } | ||||
2901 | |||||
2902 | /// When we see the block for metadata, remember where it is and then skip it. | ||||
2903 | /// This lets us lazily deserialize the metadata. | ||||
2904 | Error BitcodeReader::rememberAndSkipMetadata() { | ||||
2905 | // Save the current stream state. | ||||
2906 | uint64_t CurBit = Stream.GetCurrentBitNo(); | ||||
2907 | DeferredMetadataInfo.push_back(CurBit); | ||||
2908 | |||||
2909 | // Skip over the block for now. | ||||
2910 | if (Error Err = Stream.SkipBlock()) | ||||
2911 | return Err; | ||||
2912 | return Error::success(); | ||||
2913 | } | ||||
2914 | |||||
2915 | Error BitcodeReader::materializeMetadata() { | ||||
2916 | for (uint64_t BitPos : DeferredMetadataInfo) { | ||||
2917 | // Move the bit stream to the saved position. | ||||
2918 | if (Error JumpFailed = Stream.JumpToBit(BitPos)) | ||||
2919 | return JumpFailed; | ||||
2920 | if (Error Err = MDLoader->parseModuleMetadata()) | ||||
2921 | return Err; | ||||
2922 | } | ||||
2923 | |||||
2924 | // Upgrade "Linker Options" module flag to "llvm.linker.options" module-level | ||||
2925 | // metadata. | ||||
2926 | if (Metadata *Val = TheModule->getModuleFlag("Linker Options")) { | ||||
2927 | NamedMDNode *LinkerOpts = | ||||
2928 | TheModule->getOrInsertNamedMetadata("llvm.linker.options"); | ||||
2929 | for (const MDOperand &MDOptions : cast<MDNode>(Val)->operands()) | ||||
2930 | LinkerOpts->addOperand(cast<MDNode>(MDOptions)); | ||||
2931 | } | ||||
2932 | |||||
2933 | DeferredMetadataInfo.clear(); | ||||
2934 | return Error::success(); | ||||
2935 | } | ||||
2936 | |||||
2937 | void BitcodeReader::setStripDebugInfo() { StripDebugInfo = true; } | ||||
2938 | |||||
2939 | /// When we see the block for a function body, remember where it is and then | ||||
2940 | /// skip it. This lets us lazily deserialize the functions. | ||||
2941 | Error BitcodeReader::rememberAndSkipFunctionBody() { | ||||
2942 | // Get the function we are talking about. | ||||
2943 | if (FunctionsWithBodies.empty()) | ||||
2944 | return error("Insufficient function protos"); | ||||
2945 | |||||
2946 | Function *Fn = FunctionsWithBodies.back(); | ||||
2947 | FunctionsWithBodies.pop_back(); | ||||
2948 | |||||
2949 | // Save the current stream state. | ||||
2950 | uint64_t CurBit = Stream.GetCurrentBitNo(); | ||||
2951 | assert((((DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && "Mismatch between VST and scanned function offsets" ) ? static_cast<void> (0) : __assert_fail ("(DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && \"Mismatch between VST and scanned function offsets\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2953, __PRETTY_FUNCTION__)) | ||||
2952 | (DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) &&(((DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && "Mismatch between VST and scanned function offsets" ) ? static_cast<void> (0) : __assert_fail ("(DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && \"Mismatch between VST and scanned function offsets\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2953, __PRETTY_FUNCTION__)) | ||||
2953 | "Mismatch between VST and scanned function offsets")(((DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && "Mismatch between VST and scanned function offsets" ) ? static_cast<void> (0) : __assert_fail ("(DeferredFunctionInfo[Fn] == 0 || DeferredFunctionInfo[Fn] == CurBit) && \"Mismatch between VST and scanned function offsets\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 2953, __PRETTY_FUNCTION__)); | ||||
2954 | DeferredFunctionInfo[Fn] = CurBit; | ||||
2955 | |||||
2956 | // Skip over the function block for now. | ||||
2957 | if (Error Err = Stream.SkipBlock()) | ||||
2958 | return Err; | ||||
2959 | return Error::success(); | ||||
2960 | } | ||||
2961 | |||||
2962 | Error BitcodeReader::globalCleanup() { | ||||
2963 | // Patch the initializers for globals and aliases up. | ||||
2964 | if (Error Err = resolveGlobalAndIndirectSymbolInits()) | ||||
2965 | return Err; | ||||
2966 | if (!GlobalInits.empty() || !IndirectSymbolInits.empty()) | ||||
2967 | return error("Malformed global initializer set"); | ||||
2968 | |||||
2969 | // Look for intrinsic functions which need to be upgraded at some point | ||||
2970 | for (Function &F : *TheModule) { | ||||
2971 | MDLoader->upgradeDebugIntrinsics(F); | ||||
2972 | Function *NewFn; | ||||
2973 | if (UpgradeIntrinsicFunction(&F, NewFn)) | ||||
2974 | UpgradedIntrinsics[&F] = NewFn; | ||||
2975 | else if (auto Remangled = Intrinsic::remangleIntrinsicFunction(&F)) | ||||
2976 | // Some types could be renamed during loading if several modules are | ||||
2977 | // loaded in the same LLVMContext (LTO scenario). In this case we should | ||||
2978 | // remangle intrinsics names as well. | ||||
2979 | RemangledIntrinsics[&F] = Remangled.getValue(); | ||||
2980 | } | ||||
2981 | |||||
2982 | // Look for global variables which need to be renamed. | ||||
2983 | std::vector<std::pair<GlobalVariable *, GlobalVariable *>> UpgradedVariables; | ||||
2984 | for (GlobalVariable &GV : TheModule->globals()) | ||||
2985 | if (GlobalVariable *Upgraded = UpgradeGlobalVariable(&GV)) | ||||
2986 | UpgradedVariables.emplace_back(&GV, Upgraded); | ||||
2987 | for (auto &Pair : UpgradedVariables) { | ||||
2988 | Pair.first->eraseFromParent(); | ||||
2989 | TheModule->getGlobalList().push_back(Pair.second); | ||||
2990 | } | ||||
2991 | |||||
2992 | // Force deallocation of memory for these vectors to favor the client that | ||||
2993 | // want lazy deserialization. | ||||
2994 | std::vector<std::pair<GlobalVariable *, unsigned>>().swap(GlobalInits); | ||||
2995 | std::vector<std::pair<GlobalIndirectSymbol *, unsigned>>().swap( | ||||
2996 | IndirectSymbolInits); | ||||
2997 | return Error::success(); | ||||
2998 | } | ||||
2999 | |||||
3000 | /// Support for lazy parsing of function bodies. This is required if we | ||||
3001 | /// either have an old bitcode file without a VST forward declaration record, | ||||
3002 | /// or if we have an anonymous function being materialized, since anonymous | ||||
3003 | /// functions do not have a name and are therefore not in the VST. | ||||
3004 | Error BitcodeReader::rememberAndSkipFunctionBodies() { | ||||
3005 | if (Error JumpFailed = Stream.JumpToBit(NextUnreadBit)) | ||||
3006 | return JumpFailed; | ||||
3007 | |||||
3008 | if (Stream.AtEndOfStream()) | ||||
3009 | return error("Could not find function in stream"); | ||||
3010 | |||||
3011 | if (!SeenFirstFunctionBody) | ||||
3012 | return error("Trying to materialize functions before seeing function blocks"); | ||||
3013 | |||||
3014 | // An old bitcode file with the symbol table at the end would have | ||||
3015 | // finished the parse greedily. | ||||
3016 | assert(SeenValueSymbolTable)((SeenValueSymbolTable) ? static_cast<void> (0) : __assert_fail ("SeenValueSymbolTable", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3016, __PRETTY_FUNCTION__)); | ||||
3017 | |||||
3018 | SmallVector<uint64_t, 64> Record; | ||||
3019 | |||||
3020 | while (true) { | ||||
3021 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
3022 | if (!MaybeEntry) | ||||
3023 | return MaybeEntry.takeError(); | ||||
3024 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | ||||
3025 | |||||
3026 | switch (Entry.Kind) { | ||||
3027 | default: | ||||
3028 | return error("Expect SubBlock"); | ||||
3029 | case BitstreamEntry::SubBlock: | ||||
3030 | switch (Entry.ID) { | ||||
3031 | default: | ||||
3032 | return error("Expect function block"); | ||||
3033 | case bitc::FUNCTION_BLOCK_ID: | ||||
3034 | if (Error Err = rememberAndSkipFunctionBody()) | ||||
3035 | return Err; | ||||
3036 | NextUnreadBit = Stream.GetCurrentBitNo(); | ||||
3037 | return Error::success(); | ||||
3038 | } | ||||
3039 | } | ||||
3040 | } | ||||
3041 | } | ||||
3042 | |||||
3043 | bool BitcodeReaderBase::readBlockInfo() { | ||||
3044 | Expected<Optional<BitstreamBlockInfo>> MaybeNewBlockInfo = | ||||
3045 | Stream.ReadBlockInfoBlock(); | ||||
3046 | if (!MaybeNewBlockInfo) | ||||
3047 | return true; // FIXME Handle the error. | ||||
3048 | Optional<BitstreamBlockInfo> NewBlockInfo = | ||||
3049 | std::move(MaybeNewBlockInfo.get()); | ||||
3050 | if (!NewBlockInfo) | ||||
3051 | return true; | ||||
3052 | BlockInfo = std::move(*NewBlockInfo); | ||||
3053 | return false; | ||||
3054 | } | ||||
3055 | |||||
3056 | Error BitcodeReader::parseComdatRecord(ArrayRef<uint64_t> Record) { | ||||
3057 | // v1: [selection_kind, name] | ||||
3058 | // v2: [strtab_offset, strtab_size, selection_kind] | ||||
3059 | StringRef Name; | ||||
3060 | std::tie(Name, Record) = readNameFromStrtab(Record); | ||||
3061 | |||||
3062 | if (Record.empty()) | ||||
3063 | return error("Invalid record"); | ||||
3064 | Comdat::SelectionKind SK = getDecodedComdatSelectionKind(Record[0]); | ||||
3065 | std::string OldFormatName; | ||||
3066 | if (!UseStrtab) { | ||||
3067 | if (Record.size() < 2) | ||||
3068 | return error("Invalid record"); | ||||
3069 | unsigned ComdatNameSize = Record[1]; | ||||
3070 | OldFormatName.reserve(ComdatNameSize); | ||||
3071 | for (unsigned i = 0; i != ComdatNameSize; ++i) | ||||
3072 | OldFormatName += (char)Record[2 + i]; | ||||
3073 | Name = OldFormatName; | ||||
3074 | } | ||||
3075 | Comdat *C = TheModule->getOrInsertComdat(Name); | ||||
3076 | C->setSelectionKind(SK); | ||||
3077 | ComdatList.push_back(C); | ||||
3078 | return Error::success(); | ||||
3079 | } | ||||
3080 | |||||
3081 | static void inferDSOLocal(GlobalValue *GV) { | ||||
3082 | // infer dso_local from linkage and visibility if it is not encoded. | ||||
3083 | if (GV->hasLocalLinkage() || | ||||
3084 | (!GV->hasDefaultVisibility() && !GV->hasExternalWeakLinkage())) | ||||
3085 | GV->setDSOLocal(true); | ||||
3086 | } | ||||
3087 | |||||
3088 | Error BitcodeReader::parseGlobalVarRecord(ArrayRef<uint64_t> Record) { | ||||
3089 | // v1: [pointer type, isconst, initid, linkage, alignment, section, | ||||
3090 | // visibility, threadlocal, unnamed_addr, externally_initialized, | ||||
3091 | // dllstorageclass, comdat, attributes, preemption specifier, | ||||
3092 | // partition strtab offset, partition strtab size] (name in VST) | ||||
3093 | // v2: [strtab_offset, strtab_size, v1] | ||||
3094 | StringRef Name; | ||||
3095 | std::tie(Name, Record) = readNameFromStrtab(Record); | ||||
3096 | |||||
3097 | if (Record.size() < 6) | ||||
3098 | return error("Invalid record"); | ||||
3099 | Type *FullTy = getFullyStructuredTypeByID(Record[0]); | ||||
3100 | Type *Ty = flattenPointerTypes(FullTy); | ||||
3101 | if (!Ty) | ||||
3102 | return error("Invalid record"); | ||||
3103 | bool isConstant = Record[1] & 1; | ||||
3104 | bool explicitType = Record[1] & 2; | ||||
3105 | unsigned AddressSpace; | ||||
3106 | if (explicitType) { | ||||
3107 | AddressSpace = Record[1] >> 2; | ||||
3108 | } else { | ||||
3109 | if (!Ty->isPointerTy()) | ||||
3110 | return error("Invalid type for value"); | ||||
3111 | AddressSpace = cast<PointerType>(Ty)->getAddressSpace(); | ||||
3112 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); | ||||
3113 | } | ||||
3114 | |||||
3115 | uint64_t RawLinkage = Record[3]; | ||||
3116 | GlobalValue::LinkageTypes Linkage = getDecodedLinkage(RawLinkage); | ||||
3117 | MaybeAlign Alignment; | ||||
3118 | if (Error Err = parseAlignmentValue(Record[4], Alignment)) | ||||
3119 | return Err; | ||||
3120 | std::string Section; | ||||
3121 | if (Record[5]) { | ||||
3122 | if (Record[5] - 1 >= SectionTable.size()) | ||||
3123 | return error("Invalid ID"); | ||||
3124 | Section = SectionTable[Record[5] - 1]; | ||||
3125 | } | ||||
3126 | GlobalValue::VisibilityTypes Visibility = GlobalValue::DefaultVisibility; | ||||
3127 | // Local linkage must have default visibility. | ||||
3128 | if (Record.size() > 6 && !GlobalValue::isLocalLinkage(Linkage)) | ||||
3129 | // FIXME: Change to an error if non-default in 4.0. | ||||
3130 | Visibility = getDecodedVisibility(Record[6]); | ||||
3131 | |||||
3132 | GlobalVariable::ThreadLocalMode TLM = GlobalVariable::NotThreadLocal; | ||||
3133 | if (Record.size() > 7) | ||||
3134 | TLM = getDecodedThreadLocalMode(Record[7]); | ||||
3135 | |||||
3136 | GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None; | ||||
3137 | if (Record.size() > 8) | ||||
3138 | UnnamedAddr = getDecodedUnnamedAddrType(Record[8]); | ||||
3139 | |||||
3140 | bool ExternallyInitialized = false; | ||||
3141 | if (Record.size() > 9) | ||||
3142 | ExternallyInitialized = Record[9]; | ||||
3143 | |||||
3144 | GlobalVariable *NewGV = | ||||
3145 | new GlobalVariable(*TheModule, Ty, isConstant, Linkage, nullptr, Name, | ||||
3146 | nullptr, TLM, AddressSpace, ExternallyInitialized); | ||||
3147 | NewGV->setAlignment(Alignment); | ||||
3148 | if (!Section.empty()) | ||||
3149 | NewGV->setSection(Section); | ||||
3150 | NewGV->setVisibility(Visibility); | ||||
3151 | NewGV->setUnnamedAddr(UnnamedAddr); | ||||
3152 | |||||
3153 | if (Record.size() > 10) | ||||
3154 | NewGV->setDLLStorageClass(getDecodedDLLStorageClass(Record[10])); | ||||
3155 | else | ||||
3156 | upgradeDLLImportExportLinkage(NewGV, RawLinkage); | ||||
3157 | |||||
3158 | FullTy = PointerType::get(FullTy, AddressSpace); | ||||
3159 | assert(NewGV->getType() == flattenPointerTypes(FullTy) &&((NewGV->getType() == flattenPointerTypes(FullTy) && "Incorrect fully specified type for GlobalVariable") ? static_cast <void> (0) : __assert_fail ("NewGV->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully specified type for GlobalVariable\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3160, __PRETTY_FUNCTION__)) | ||||
3160 | "Incorrect fully specified type for GlobalVariable")((NewGV->getType() == flattenPointerTypes(FullTy) && "Incorrect fully specified type for GlobalVariable") ? static_cast <void> (0) : __assert_fail ("NewGV->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully specified type for GlobalVariable\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3160, __PRETTY_FUNCTION__)); | ||||
3161 | ValueList.push_back(NewGV, FullTy); | ||||
3162 | |||||
3163 | // Remember which value to use for the global initializer. | ||||
3164 | if (unsigned InitID = Record[2]) | ||||
3165 | GlobalInits.push_back(std::make_pair(NewGV, InitID - 1)); | ||||
3166 | |||||
3167 | if (Record.size() > 11) { | ||||
3168 | if (unsigned ComdatID = Record[11]) { | ||||
3169 | if (ComdatID > ComdatList.size()) | ||||
3170 | return error("Invalid global variable comdat ID"); | ||||
3171 | NewGV->setComdat(ComdatList[ComdatID - 1]); | ||||
3172 | } | ||||
3173 | } else if (hasImplicitComdat(RawLinkage)) { | ||||
3174 | NewGV->setComdat(reinterpret_cast<Comdat *>(1)); | ||||
3175 | } | ||||
3176 | |||||
3177 | if (Record.size() > 12) { | ||||
3178 | auto AS = getAttributes(Record[12]).getFnAttributes(); | ||||
3179 | NewGV->setAttributes(AS); | ||||
3180 | } | ||||
3181 | |||||
3182 | if (Record.size() > 13) { | ||||
3183 | NewGV->setDSOLocal(getDecodedDSOLocal(Record[13])); | ||||
3184 | } | ||||
3185 | inferDSOLocal(NewGV); | ||||
3186 | |||||
3187 | // Check whether we have enough values to read a partition name. | ||||
3188 | if (Record.size() > 15) | ||||
3189 | NewGV->setPartition(StringRef(Strtab.data() + Record[14], Record[15])); | ||||
3190 | |||||
3191 | return Error::success(); | ||||
3192 | } | ||||
3193 | |||||
3194 | Error BitcodeReader::parseFunctionRecord(ArrayRef<uint64_t> Record) { | ||||
3195 | // v1: [type, callingconv, isproto, linkage, paramattr, alignment, section, | ||||
3196 | // visibility, gc, unnamed_addr, prologuedata, dllstorageclass, comdat, | ||||
3197 | // prefixdata, personalityfn, preemption specifier, addrspace] (name in VST) | ||||
3198 | // v2: [strtab_offset, strtab_size, v1] | ||||
3199 | StringRef Name; | ||||
3200 | std::tie(Name, Record) = readNameFromStrtab(Record); | ||||
3201 | |||||
3202 | if (Record.size() < 8) | ||||
3203 | return error("Invalid record"); | ||||
3204 | Type *FullFTy = getFullyStructuredTypeByID(Record[0]); | ||||
3205 | Type *FTy = flattenPointerTypes(FullFTy); | ||||
3206 | if (!FTy) | ||||
3207 | return error("Invalid record"); | ||||
3208 | if (isa<PointerType>(FTy)) | ||||
3209 | std::tie(FullFTy, FTy) = getPointerElementTypes(FullFTy); | ||||
3210 | |||||
3211 | if (!isa<FunctionType>(FTy)) | ||||
3212 | return error("Invalid type for value"); | ||||
3213 | auto CC = static_cast<CallingConv::ID>(Record[1]); | ||||
3214 | if (CC & ~CallingConv::MaxID) | ||||
3215 | return error("Invalid calling convention ID"); | ||||
3216 | |||||
3217 | unsigned AddrSpace = TheModule->getDataLayout().getProgramAddressSpace(); | ||||
3218 | if (Record.size() > 16) | ||||
3219 | AddrSpace = Record[16]; | ||||
3220 | |||||
3221 | Function *Func = | ||||
3222 | Function::Create(cast<FunctionType>(FTy), GlobalValue::ExternalLinkage, | ||||
3223 | AddrSpace, Name, TheModule); | ||||
3224 | |||||
3225 | assert(Func->getFunctionType() == flattenPointerTypes(FullFTy) &&((Func->getFunctionType() == flattenPointerTypes(FullFTy) && "Incorrect fully specified type provided for function") ? static_cast <void> (0) : __assert_fail ("Func->getFunctionType() == flattenPointerTypes(FullFTy) && \"Incorrect fully specified type provided for function\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3226, __PRETTY_FUNCTION__)) | ||||
3226 | "Incorrect fully specified type provided for function")((Func->getFunctionType() == flattenPointerTypes(FullFTy) && "Incorrect fully specified type provided for function") ? static_cast <void> (0) : __assert_fail ("Func->getFunctionType() == flattenPointerTypes(FullFTy) && \"Incorrect fully specified type provided for function\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3226, __PRETTY_FUNCTION__)); | ||||
3227 | FunctionTypes[Func] = cast<FunctionType>(FullFTy); | ||||
3228 | |||||
3229 | Func->setCallingConv(CC); | ||||
3230 | bool isProto = Record[2]; | ||||
3231 | uint64_t RawLinkage = Record[3]; | ||||
3232 | Func->setLinkage(getDecodedLinkage(RawLinkage)); | ||||
3233 | Func->setAttributes(getAttributes(Record[4])); | ||||
3234 | |||||
3235 | // Upgrade any old-style byval without a type by propagating the argument's | ||||
3236 | // pointee type. There should be no opaque pointers where the byval type is | ||||
3237 | // implicit. | ||||
3238 | for (unsigned i = 0; i != Func->arg_size(); ++i) { | ||||
3239 | if (!Func->hasParamAttribute(i, Attribute::ByVal)) | ||||
3240 | continue; | ||||
3241 | |||||
3242 | Type *PTy = cast<FunctionType>(FullFTy)->getParamType(i); | ||||
3243 | Func->removeParamAttr(i, Attribute::ByVal); | ||||
3244 | Func->addParamAttr(i, Attribute::getWithByValType( | ||||
3245 | Context, getPointerElementFlatType(PTy))); | ||||
3246 | } | ||||
3247 | |||||
3248 | MaybeAlign Alignment; | ||||
3249 | if (Error Err = parseAlignmentValue(Record[5], Alignment)) | ||||
3250 | return Err; | ||||
3251 | Func->setAlignment(Alignment); | ||||
3252 | if (Record[6]) { | ||||
3253 | if (Record[6] - 1 >= SectionTable.size()) | ||||
3254 | return error("Invalid ID"); | ||||
3255 | Func->setSection(SectionTable[Record[6] - 1]); | ||||
3256 | } | ||||
3257 | // Local linkage must have default visibility. | ||||
3258 | if (!Func->hasLocalLinkage()) | ||||
3259 | // FIXME: Change to an error if non-default in 4.0. | ||||
3260 | Func->setVisibility(getDecodedVisibility(Record[7])); | ||||
3261 | if (Record.size() > 8 && Record[8]) { | ||||
3262 | if (Record[8] - 1 >= GCTable.size()) | ||||
3263 | return error("Invalid ID"); | ||||
3264 | Func->setGC(GCTable[Record[8] - 1]); | ||||
3265 | } | ||||
3266 | GlobalValue::UnnamedAddr UnnamedAddr = GlobalValue::UnnamedAddr::None; | ||||
3267 | if (Record.size() > 9) | ||||
3268 | UnnamedAddr = getDecodedUnnamedAddrType(Record[9]); | ||||
3269 | Func->setUnnamedAddr(UnnamedAddr); | ||||
3270 | if (Record.size() > 10 && Record[10] != 0) | ||||
3271 | FunctionPrologues.push_back(std::make_pair(Func, Record[10] - 1)); | ||||
3272 | |||||
3273 | if (Record.size() > 11) | ||||
3274 | Func->setDLLStorageClass(getDecodedDLLStorageClass(Record[11])); | ||||
3275 | else | ||||
3276 | upgradeDLLImportExportLinkage(Func, RawLinkage); | ||||
3277 | |||||
3278 | if (Record.size() > 12) { | ||||
3279 | if (unsigned ComdatID = Record[12]) { | ||||
3280 | if (ComdatID > ComdatList.size()) | ||||
3281 | return error("Invalid function comdat ID"); | ||||
3282 | Func->setComdat(ComdatList[ComdatID - 1]); | ||||
3283 | } | ||||
3284 | } else if (hasImplicitComdat(RawLinkage)) { | ||||
3285 | Func->setComdat(reinterpret_cast<Comdat *>(1)); | ||||
3286 | } | ||||
3287 | |||||
3288 | if (Record.size() > 13 && Record[13] != 0) | ||||
3289 | FunctionPrefixes.push_back(std::make_pair(Func, Record[13] - 1)); | ||||
3290 | |||||
3291 | if (Record.size() > 14 && Record[14] != 0) | ||||
3292 | FunctionPersonalityFns.push_back(std::make_pair(Func, Record[14] - 1)); | ||||
3293 | |||||
3294 | if (Record.size() > 15) { | ||||
3295 | Func->setDSOLocal(getDecodedDSOLocal(Record[15])); | ||||
3296 | } | ||||
3297 | inferDSOLocal(Func); | ||||
3298 | |||||
3299 | // Record[16] is the address space number. | ||||
3300 | |||||
3301 | // Check whether we have enough values to read a partition name. | ||||
3302 | if (Record.size() > 18) | ||||
3303 | Func->setPartition(StringRef(Strtab.data() + Record[17], Record[18])); | ||||
3304 | |||||
3305 | Type *FullTy = PointerType::get(FullFTy, AddrSpace); | ||||
3306 | assert(Func->getType() == flattenPointerTypes(FullTy) &&((Func->getType() == flattenPointerTypes(FullTy) && "Incorrect fully specified type provided for Function") ? static_cast <void> (0) : __assert_fail ("Func->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully specified type provided for Function\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3307, __PRETTY_FUNCTION__)) | ||||
3307 | "Incorrect fully specified type provided for Function")((Func->getType() == flattenPointerTypes(FullTy) && "Incorrect fully specified type provided for Function") ? static_cast <void> (0) : __assert_fail ("Func->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully specified type provided for Function\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3307, __PRETTY_FUNCTION__)); | ||||
3308 | ValueList.push_back(Func, FullTy); | ||||
3309 | |||||
3310 | // If this is a function with a body, remember the prototype we are | ||||
3311 | // creating now, so that we can match up the body with them later. | ||||
3312 | if (!isProto) { | ||||
3313 | Func->setIsMaterializable(true); | ||||
3314 | FunctionsWithBodies.push_back(Func); | ||||
3315 | DeferredFunctionInfo[Func] = 0; | ||||
3316 | } | ||||
3317 | return Error::success(); | ||||
3318 | } | ||||
3319 | |||||
3320 | Error BitcodeReader::parseGlobalIndirectSymbolRecord( | ||||
3321 | unsigned BitCode, ArrayRef<uint64_t> Record) { | ||||
3322 | // v1 ALIAS_OLD: [alias type, aliasee val#, linkage] (name in VST) | ||||
3323 | // v1 ALIAS: [alias type, addrspace, aliasee val#, linkage, visibility, | ||||
3324 | // dllstorageclass, threadlocal, unnamed_addr, | ||||
3325 | // preemption specifier] (name in VST) | ||||
3326 | // v1 IFUNC: [alias type, addrspace, aliasee val#, linkage, | ||||
3327 | // visibility, dllstorageclass, threadlocal, unnamed_addr, | ||||
3328 | // preemption specifier] (name in VST) | ||||
3329 | // v2: [strtab_offset, strtab_size, v1] | ||||
3330 | StringRef Name; | ||||
3331 | std::tie(Name, Record) = readNameFromStrtab(Record); | ||||
3332 | |||||
3333 | bool NewRecord = BitCode != bitc::MODULE_CODE_ALIAS_OLD; | ||||
3334 | if (Record.size() < (3 + (unsigned)NewRecord)) | ||||
3335 | return error("Invalid record"); | ||||
3336 | unsigned OpNum = 0; | ||||
3337 | Type *FullTy = getFullyStructuredTypeByID(Record[OpNum++]); | ||||
3338 | Type *Ty = flattenPointerTypes(FullTy); | ||||
3339 | if (!Ty) | ||||
3340 | return error("Invalid record"); | ||||
3341 | |||||
3342 | unsigned AddrSpace; | ||||
3343 | if (!NewRecord) { | ||||
3344 | auto *PTy = dyn_cast<PointerType>(Ty); | ||||
3345 | if (!PTy) | ||||
3346 | return error("Invalid type for value"); | ||||
3347 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); | ||||
3348 | AddrSpace = PTy->getAddressSpace(); | ||||
3349 | } else { | ||||
3350 | AddrSpace = Record[OpNum++]; | ||||
3351 | } | ||||
3352 | |||||
3353 | auto Val = Record[OpNum++]; | ||||
3354 | auto Linkage = Record[OpNum++]; | ||||
3355 | GlobalIndirectSymbol *NewGA; | ||||
3356 | if (BitCode == bitc::MODULE_CODE_ALIAS || | ||||
3357 | BitCode == bitc::MODULE_CODE_ALIAS_OLD) | ||||
3358 | NewGA = GlobalAlias::create(Ty, AddrSpace, getDecodedLinkage(Linkage), Name, | ||||
3359 | TheModule); | ||||
3360 | else | ||||
3361 | NewGA = GlobalIFunc::create(Ty, AddrSpace, getDecodedLinkage(Linkage), Name, | ||||
3362 | nullptr, TheModule); | ||||
3363 | |||||
3364 | assert(NewGA->getValueType() == flattenPointerTypes(FullTy) &&((NewGA->getValueType() == flattenPointerTypes(FullTy) && "Incorrect fully structured type provided for GlobalIndirectSymbol" ) ? static_cast<void> (0) : __assert_fail ("NewGA->getValueType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for GlobalIndirectSymbol\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3365, __PRETTY_FUNCTION__)) | ||||
3365 | "Incorrect fully structured type provided for GlobalIndirectSymbol")((NewGA->getValueType() == flattenPointerTypes(FullTy) && "Incorrect fully structured type provided for GlobalIndirectSymbol" ) ? static_cast<void> (0) : __assert_fail ("NewGA->getValueType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for GlobalIndirectSymbol\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3365, __PRETTY_FUNCTION__)); | ||||
3366 | // Old bitcode files didn't have visibility field. | ||||
3367 | // Local linkage must have default visibility. | ||||
3368 | if (OpNum != Record.size()) { | ||||
3369 | auto VisInd = OpNum++; | ||||
3370 | if (!NewGA->hasLocalLinkage()) | ||||
3371 | // FIXME: Change to an error if non-default in 4.0. | ||||
3372 | NewGA->setVisibility(getDecodedVisibility(Record[VisInd])); | ||||
3373 | } | ||||
3374 | if (BitCode == bitc::MODULE_CODE_ALIAS || | ||||
3375 | BitCode == bitc::MODULE_CODE_ALIAS_OLD) { | ||||
3376 | if (OpNum != Record.size()) | ||||
3377 | NewGA->setDLLStorageClass(getDecodedDLLStorageClass(Record[OpNum++])); | ||||
3378 | else | ||||
3379 | upgradeDLLImportExportLinkage(NewGA, Linkage); | ||||
3380 | if (OpNum != Record.size()) | ||||
3381 | NewGA->setThreadLocalMode(getDecodedThreadLocalMode(Record[OpNum++])); | ||||
3382 | if (OpNum != Record.size()) | ||||
3383 | NewGA->setUnnamedAddr(getDecodedUnnamedAddrType(Record[OpNum++])); | ||||
3384 | } | ||||
3385 | if (OpNum != Record.size()) | ||||
3386 | NewGA->setDSOLocal(getDecodedDSOLocal(Record[OpNum++])); | ||||
3387 | inferDSOLocal(NewGA); | ||||
3388 | |||||
3389 | // Check whether we have enough values to read a partition name. | ||||
3390 | if (OpNum + 1 < Record.size()) { | ||||
3391 | NewGA->setPartition( | ||||
3392 | StringRef(Strtab.data() + Record[OpNum], Record[OpNum + 1])); | ||||
3393 | OpNum += 2; | ||||
3394 | } | ||||
3395 | |||||
3396 | FullTy = PointerType::get(FullTy, AddrSpace); | ||||
3397 | assert(NewGA->getType() == flattenPointerTypes(FullTy) &&((NewGA->getType() == flattenPointerTypes(FullTy) && "Incorrect fully structured type provided for GlobalIndirectSymbol" ) ? static_cast<void> (0) : __assert_fail ("NewGA->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for GlobalIndirectSymbol\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3398, __PRETTY_FUNCTION__)) | ||||
3398 | "Incorrect fully structured type provided for GlobalIndirectSymbol")((NewGA->getType() == flattenPointerTypes(FullTy) && "Incorrect fully structured type provided for GlobalIndirectSymbol" ) ? static_cast<void> (0) : __assert_fail ("NewGA->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for GlobalIndirectSymbol\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3398, __PRETTY_FUNCTION__)); | ||||
3399 | ValueList.push_back(NewGA, FullTy); | ||||
3400 | IndirectSymbolInits.push_back(std::make_pair(NewGA, Val)); | ||||
3401 | return Error::success(); | ||||
3402 | } | ||||
3403 | |||||
3404 | Error BitcodeReader::parseModule(uint64_t ResumeBit, | ||||
3405 | bool ShouldLazyLoadMetadata) { | ||||
3406 | if (ResumeBit) { | ||||
3407 | if (Error JumpFailed = Stream.JumpToBit(ResumeBit)) | ||||
3408 | return JumpFailed; | ||||
3409 | } else if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | ||||
3410 | return Err; | ||||
3411 | |||||
3412 | SmallVector<uint64_t, 64> Record; | ||||
3413 | |||||
3414 | // Read all the records for this module. | ||||
3415 | while (true) { | ||||
3416 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
3417 | if (!MaybeEntry) | ||||
3418 | return MaybeEntry.takeError(); | ||||
3419 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | ||||
3420 | |||||
3421 | switch (Entry.Kind) { | ||||
3422 | case BitstreamEntry::Error: | ||||
3423 | return error("Malformed block"); | ||||
3424 | case BitstreamEntry::EndBlock: | ||||
3425 | return globalCleanup(); | ||||
3426 | |||||
3427 | case BitstreamEntry::SubBlock: | ||||
3428 | switch (Entry.ID) { | ||||
3429 | default: // Skip unknown content. | ||||
3430 | if (Error Err = Stream.SkipBlock()) | ||||
3431 | return Err; | ||||
3432 | break; | ||||
3433 | case bitc::BLOCKINFO_BLOCK_ID: | ||||
3434 | if (readBlockInfo()) | ||||
3435 | return error("Malformed block"); | ||||
3436 | break; | ||||
3437 | case bitc::PARAMATTR_BLOCK_ID: | ||||
3438 | if (Error Err = parseAttributeBlock()) | ||||
3439 | return Err; | ||||
3440 | break; | ||||
3441 | case bitc::PARAMATTR_GROUP_BLOCK_ID: | ||||
3442 | if (Error Err = parseAttributeGroupBlock()) | ||||
3443 | return Err; | ||||
3444 | break; | ||||
3445 | case bitc::TYPE_BLOCK_ID_NEW: | ||||
3446 | if (Error Err = parseTypeTable()) | ||||
3447 | return Err; | ||||
3448 | break; | ||||
3449 | case bitc::VALUE_SYMTAB_BLOCK_ID: | ||||
3450 | if (!SeenValueSymbolTable) { | ||||
3451 | // Either this is an old form VST without function index and an | ||||
3452 | // associated VST forward declaration record (which would have caused | ||||
3453 | // the VST to be jumped to and parsed before it was encountered | ||||
3454 | // normally in the stream), or there were no function blocks to | ||||
3455 | // trigger an earlier parsing of the VST. | ||||
3456 | assert(VSTOffset == 0 || FunctionsWithBodies.empty())((VSTOffset == 0 || FunctionsWithBodies.empty()) ? static_cast <void> (0) : __assert_fail ("VSTOffset == 0 || FunctionsWithBodies.empty()" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3456, __PRETTY_FUNCTION__)); | ||||
3457 | if (Error Err = parseValueSymbolTable()) | ||||
3458 | return Err; | ||||
3459 | SeenValueSymbolTable = true; | ||||
3460 | } else { | ||||
3461 | // We must have had a VST forward declaration record, which caused | ||||
3462 | // the parser to jump to and parse the VST earlier. | ||||
3463 | assert(VSTOffset > 0)((VSTOffset > 0) ? static_cast<void> (0) : __assert_fail ("VSTOffset > 0", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3463, __PRETTY_FUNCTION__)); | ||||
3464 | if (Error Err = Stream.SkipBlock()) | ||||
3465 | return Err; | ||||
3466 | } | ||||
3467 | break; | ||||
3468 | case bitc::CONSTANTS_BLOCK_ID: | ||||
3469 | if (Error Err = parseConstants()) | ||||
3470 | return Err; | ||||
3471 | if (Error Err = resolveGlobalAndIndirectSymbolInits()) | ||||
3472 | return Err; | ||||
3473 | break; | ||||
3474 | case bitc::METADATA_BLOCK_ID: | ||||
3475 | if (ShouldLazyLoadMetadata) { | ||||
3476 | if (Error Err = rememberAndSkipMetadata()) | ||||
3477 | return Err; | ||||
3478 | break; | ||||
3479 | } | ||||
3480 | assert(DeferredMetadataInfo.empty() && "Unexpected deferred metadata")((DeferredMetadataInfo.empty() && "Unexpected deferred metadata" ) ? static_cast<void> (0) : __assert_fail ("DeferredMetadataInfo.empty() && \"Unexpected deferred metadata\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3480, __PRETTY_FUNCTION__)); | ||||
3481 | if (Error Err = MDLoader->parseModuleMetadata()) | ||||
3482 | return Err; | ||||
3483 | break; | ||||
3484 | case bitc::METADATA_KIND_BLOCK_ID: | ||||
3485 | if (Error Err = MDLoader->parseMetadataKinds()) | ||||
3486 | return Err; | ||||
3487 | break; | ||||
3488 | case bitc::FUNCTION_BLOCK_ID: | ||||
3489 | // If this is the first function body we've seen, reverse the | ||||
3490 | // FunctionsWithBodies list. | ||||
3491 | if (!SeenFirstFunctionBody) { | ||||
3492 | std::reverse(FunctionsWithBodies.begin(), FunctionsWithBodies.end()); | ||||
3493 | if (Error Err = globalCleanup()) | ||||
3494 | return Err; | ||||
3495 | SeenFirstFunctionBody = true; | ||||
3496 | } | ||||
3497 | |||||
3498 | if (VSTOffset > 0) { | ||||
3499 | // If we have a VST forward declaration record, make sure we | ||||
3500 | // parse the VST now if we haven't already. It is needed to | ||||
3501 | // set up the DeferredFunctionInfo vector for lazy reading. | ||||
3502 | if (!SeenValueSymbolTable) { | ||||
3503 | if (Error Err = BitcodeReader::parseValueSymbolTable(VSTOffset)) | ||||
3504 | return Err; | ||||
3505 | SeenValueSymbolTable = true; | ||||
3506 | // Fall through so that we record the NextUnreadBit below. | ||||
3507 | // This is necessary in case we have an anonymous function that | ||||
3508 | // is later materialized. Since it will not have a VST entry we | ||||
3509 | // need to fall back to the lazy parse to find its offset. | ||||
3510 | } else { | ||||
3511 | // If we have a VST forward declaration record, but have already | ||||
3512 | // parsed the VST (just above, when the first function body was | ||||
3513 | // encountered here), then we are resuming the parse after | ||||
3514 | // materializing functions. The ResumeBit points to the | ||||
3515 | // start of the last function block recorded in the | ||||
3516 | // DeferredFunctionInfo map. Skip it. | ||||
3517 | if (Error Err = Stream.SkipBlock()) | ||||
3518 | return Err; | ||||
3519 | continue; | ||||
3520 | } | ||||
3521 | } | ||||
3522 | |||||
3523 | // Support older bitcode files that did not have the function | ||||
3524 | // index in the VST, nor a VST forward declaration record, as | ||||
3525 | // well as anonymous functions that do not have VST entries. | ||||
3526 | // Build the DeferredFunctionInfo vector on the fly. | ||||
3527 | if (Error Err = rememberAndSkipFunctionBody()) | ||||
3528 | return Err; | ||||
3529 | |||||
3530 | // Suspend parsing when we reach the function bodies. Subsequent | ||||
3531 | // materialization calls will resume it when necessary. If the bitcode | ||||
3532 | // file is old, the symbol table will be at the end instead and will not | ||||
3533 | // have been seen yet. In this case, just finish the parse now. | ||||
3534 | if (SeenValueSymbolTable) { | ||||
3535 | NextUnreadBit = Stream.GetCurrentBitNo(); | ||||
3536 | // After the VST has been parsed, we need to make sure intrinsic name | ||||
3537 | // are auto-upgraded. | ||||
3538 | return globalCleanup(); | ||||
3539 | } | ||||
3540 | break; | ||||
3541 | case bitc::USELIST_BLOCK_ID: | ||||
3542 | if (Error Err = parseUseLists()) | ||||
3543 | return Err; | ||||
3544 | break; | ||||
3545 | case bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID: | ||||
3546 | if (Error Err = parseOperandBundleTags()) | ||||
3547 | return Err; | ||||
3548 | break; | ||||
3549 | case bitc::SYNC_SCOPE_NAMES_BLOCK_ID: | ||||
3550 | if (Error Err = parseSyncScopeNames()) | ||||
3551 | return Err; | ||||
3552 | break; | ||||
3553 | } | ||||
3554 | continue; | ||||
3555 | |||||
3556 | case BitstreamEntry::Record: | ||||
3557 | // The interesting case. | ||||
3558 | break; | ||||
3559 | } | ||||
3560 | |||||
3561 | // Read a record. | ||||
3562 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | ||||
3563 | if (!MaybeBitCode) | ||||
3564 | return MaybeBitCode.takeError(); | ||||
3565 | switch (unsigned BitCode = MaybeBitCode.get()) { | ||||
3566 | default: break; // Default behavior, ignore unknown content. | ||||
3567 | case bitc::MODULE_CODE_VERSION: { | ||||
3568 | Expected<unsigned> VersionOrErr = parseVersionRecord(Record); | ||||
3569 | if (!VersionOrErr) | ||||
3570 | return VersionOrErr.takeError(); | ||||
3571 | UseRelativeIDs = *VersionOrErr >= 1; | ||||
3572 | break; | ||||
3573 | } | ||||
3574 | case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N] | ||||
3575 | std::string S; | ||||
3576 | if (convertToString(Record, 0, S)) | ||||
3577 | return error("Invalid record"); | ||||
3578 | TheModule->setTargetTriple(S); | ||||
3579 | break; | ||||
3580 | } | ||||
3581 | case bitc::MODULE_CODE_DATALAYOUT: { // DATALAYOUT: [strchr x N] | ||||
3582 | std::string S; | ||||
3583 | if (convertToString(Record, 0, S)) | ||||
3584 | return error("Invalid record"); | ||||
3585 | TheModule->setDataLayout(S); | ||||
3586 | break; | ||||
3587 | } | ||||
3588 | case bitc::MODULE_CODE_ASM: { // ASM: [strchr x N] | ||||
3589 | std::string S; | ||||
3590 | if (convertToString(Record, 0, S)) | ||||
3591 | return error("Invalid record"); | ||||
3592 | TheModule->setModuleInlineAsm(S); | ||||
3593 | break; | ||||
3594 | } | ||||
3595 | case bitc::MODULE_CODE_DEPLIB: { // DEPLIB: [strchr x N] | ||||
3596 | // FIXME: Remove in 4.0. | ||||
3597 | std::string S; | ||||
3598 | if (convertToString(Record, 0, S)) | ||||
3599 | return error("Invalid record"); | ||||
3600 | // Ignore value. | ||||
3601 | break; | ||||
3602 | } | ||||
3603 | case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N] | ||||
3604 | std::string S; | ||||
3605 | if (convertToString(Record, 0, S)) | ||||
3606 | return error("Invalid record"); | ||||
3607 | SectionTable.push_back(S); | ||||
3608 | break; | ||||
3609 | } | ||||
3610 | case bitc::MODULE_CODE_GCNAME: { // SECTIONNAME: [strchr x N] | ||||
3611 | std::string S; | ||||
3612 | if (convertToString(Record, 0, S)) | ||||
3613 | return error("Invalid record"); | ||||
3614 | GCTable.push_back(S); | ||||
3615 | break; | ||||
3616 | } | ||||
3617 | case bitc::MODULE_CODE_COMDAT: | ||||
3618 | if (Error Err = parseComdatRecord(Record)) | ||||
3619 | return Err; | ||||
3620 | break; | ||||
3621 | case bitc::MODULE_CODE_GLOBALVAR: | ||||
3622 | if (Error Err = parseGlobalVarRecord(Record)) | ||||
3623 | return Err; | ||||
3624 | break; | ||||
3625 | case bitc::MODULE_CODE_FUNCTION: | ||||
3626 | if (Error Err = parseFunctionRecord(Record)) | ||||
3627 | return Err; | ||||
3628 | break; | ||||
3629 | case bitc::MODULE_CODE_IFUNC: | ||||
3630 | case bitc::MODULE_CODE_ALIAS: | ||||
3631 | case bitc::MODULE_CODE_ALIAS_OLD: | ||||
3632 | if (Error Err = parseGlobalIndirectSymbolRecord(BitCode, Record)) | ||||
3633 | return Err; | ||||
3634 | break; | ||||
3635 | /// MODULE_CODE_VSTOFFSET: [offset] | ||||
3636 | case bitc::MODULE_CODE_VSTOFFSET: | ||||
3637 | if (Record.size() < 1) | ||||
3638 | return error("Invalid record"); | ||||
3639 | // Note that we subtract 1 here because the offset is relative to one word | ||||
3640 | // before the start of the identification or module block, which was | ||||
3641 | // historically always the start of the regular bitcode header. | ||||
3642 | VSTOffset = Record[0] - 1; | ||||
3643 | break; | ||||
3644 | /// MODULE_CODE_SOURCE_FILENAME: [namechar x N] | ||||
3645 | case bitc::MODULE_CODE_SOURCE_FILENAME: | ||||
3646 | SmallString<128> ValueName; | ||||
3647 | if (convertToString(Record, 0, ValueName)) | ||||
3648 | return error("Invalid record"); | ||||
3649 | TheModule->setSourceFileName(ValueName); | ||||
3650 | break; | ||||
3651 | } | ||||
3652 | Record.clear(); | ||||
3653 | |||||
3654 | // Upgrade data layout string. | ||||
3655 | std::string DL = llvm::UpgradeDataLayoutString( | ||||
3656 | TheModule->getDataLayoutStr(), TheModule->getTargetTriple()); | ||||
3657 | TheModule->setDataLayout(DL); | ||||
3658 | } | ||||
3659 | } | ||||
3660 | |||||
3661 | Error BitcodeReader::parseBitcodeInto(Module *M, bool ShouldLazyLoadMetadata, | ||||
3662 | bool IsImporting) { | ||||
3663 | TheModule = M; | ||||
3664 | MDLoader = MetadataLoader(Stream, *M, ValueList, IsImporting, | ||||
3665 | [&](unsigned ID) { return getTypeByID(ID); }); | ||||
3666 | return parseModule(0, ShouldLazyLoadMetadata); | ||||
3667 | } | ||||
3668 | |||||
3669 | Error BitcodeReader::typeCheckLoadStoreInst(Type *ValType, Type *PtrType) { | ||||
3670 | if (!isa<PointerType>(PtrType)) | ||||
3671 | return error("Load/Store operand is not a pointer type"); | ||||
3672 | Type *ElemType = cast<PointerType>(PtrType)->getElementType(); | ||||
3673 | |||||
3674 | if (ValType && ValType != ElemType) | ||||
3675 | return error("Explicit load/store type does not match pointee " | ||||
3676 | "type of pointer operand"); | ||||
3677 | if (!PointerType::isLoadableOrStorableType(ElemType)) | ||||
3678 | return error("Cannot load/store from pointer"); | ||||
3679 | return Error::success(); | ||||
3680 | } | ||||
3681 | |||||
3682 | void BitcodeReader::propagateByValTypes(CallBase *CB, | ||||
3683 | ArrayRef<Type *> ArgsFullTys) { | ||||
3684 | for (unsigned i = 0; i != CB->arg_size(); ++i) { | ||||
3685 | if (!CB->paramHasAttr(i, Attribute::ByVal)) | ||||
3686 | continue; | ||||
3687 | |||||
3688 | CB->removeParamAttr(i, Attribute::ByVal); | ||||
3689 | CB->addParamAttr( | ||||
3690 | i, Attribute::getWithByValType( | ||||
3691 | Context, getPointerElementFlatType(ArgsFullTys[i]))); | ||||
3692 | } | ||||
3693 | } | ||||
3694 | |||||
3695 | /// Lazily parse the specified function body block. | ||||
3696 | Error BitcodeReader::parseFunctionBody(Function *F) { | ||||
3697 | if (Error Err = Stream.EnterSubBlock(bitc::FUNCTION_BLOCK_ID)) | ||||
| |||||
3698 | return Err; | ||||
3699 | |||||
3700 | // Unexpected unresolved metadata when parsing function. | ||||
3701 | if (MDLoader->hasFwdRefs()) | ||||
3702 | return error("Invalid function metadata: incoming forward references"); | ||||
3703 | |||||
3704 | InstructionList.clear(); | ||||
3705 | unsigned ModuleValueListSize = ValueList.size(); | ||||
3706 | unsigned ModuleMDLoaderSize = MDLoader->size(); | ||||
3707 | |||||
3708 | // Add all the function arguments to the value table. | ||||
3709 | unsigned ArgNo = 0; | ||||
3710 | FunctionType *FullFTy = FunctionTypes[F]; | ||||
3711 | for (Argument &I : F->args()) { | ||||
3712 | assert(I.getType() == flattenPointerTypes(FullFTy->getParamType(ArgNo)) &&((I.getType() == flattenPointerTypes(FullFTy->getParamType (ArgNo)) && "Incorrect fully specified type for Function Argument" ) ? static_cast<void> (0) : __assert_fail ("I.getType() == flattenPointerTypes(FullFTy->getParamType(ArgNo)) && \"Incorrect fully specified type for Function Argument\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3713, __PRETTY_FUNCTION__)) | ||||
3713 | "Incorrect fully specified type for Function Argument")((I.getType() == flattenPointerTypes(FullFTy->getParamType (ArgNo)) && "Incorrect fully specified type for Function Argument" ) ? static_cast<void> (0) : __assert_fail ("I.getType() == flattenPointerTypes(FullFTy->getParamType(ArgNo)) && \"Incorrect fully specified type for Function Argument\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3713, __PRETTY_FUNCTION__)); | ||||
3714 | ValueList.push_back(&I, FullFTy->getParamType(ArgNo++)); | ||||
3715 | } | ||||
3716 | unsigned NextValueNo = ValueList.size(); | ||||
3717 | BasicBlock *CurBB = nullptr; | ||||
3718 | unsigned CurBBNo = 0; | ||||
3719 | |||||
3720 | DebugLoc LastLoc; | ||||
3721 | auto getLastInstruction = [&]() -> Instruction * { | ||||
3722 | if (CurBB && !CurBB->empty()) | ||||
3723 | return &CurBB->back(); | ||||
3724 | else if (CurBBNo && FunctionBBs[CurBBNo - 1] && | ||||
3725 | !FunctionBBs[CurBBNo - 1]->empty()) | ||||
3726 | return &FunctionBBs[CurBBNo - 1]->back(); | ||||
3727 | return nullptr; | ||||
3728 | }; | ||||
3729 | |||||
3730 | std::vector<OperandBundleDef> OperandBundles; | ||||
3731 | |||||
3732 | // Read all the records. | ||||
3733 | SmallVector<uint64_t, 64> Record; | ||||
3734 | |||||
3735 | while (true) { | ||||
3736 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
3737 | if (!MaybeEntry) | ||||
3738 | return MaybeEntry.takeError(); | ||||
3739 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | ||||
3740 | |||||
3741 | switch (Entry.Kind) { | ||||
3742 | case BitstreamEntry::Error: | ||||
3743 | return error("Malformed block"); | ||||
3744 | case BitstreamEntry::EndBlock: | ||||
3745 | goto OutOfRecordLoop; | ||||
3746 | |||||
3747 | case BitstreamEntry::SubBlock: | ||||
3748 | switch (Entry.ID) { | ||||
3749 | default: // Skip unknown content. | ||||
3750 | if (Error Err = Stream.SkipBlock()) | ||||
3751 | return Err; | ||||
3752 | break; | ||||
3753 | case bitc::CONSTANTS_BLOCK_ID: | ||||
3754 | if (Error Err = parseConstants()) | ||||
3755 | return Err; | ||||
3756 | NextValueNo = ValueList.size(); | ||||
3757 | break; | ||||
3758 | case bitc::VALUE_SYMTAB_BLOCK_ID: | ||||
3759 | if (Error Err = parseValueSymbolTable()) | ||||
3760 | return Err; | ||||
3761 | break; | ||||
3762 | case bitc::METADATA_ATTACHMENT_ID: | ||||
3763 | if (Error Err = MDLoader->parseMetadataAttachment(*F, InstructionList)) | ||||
3764 | return Err; | ||||
3765 | break; | ||||
3766 | case bitc::METADATA_BLOCK_ID: | ||||
3767 | assert(DeferredMetadataInfo.empty() &&((DeferredMetadataInfo.empty() && "Must read all module-level metadata before function-level" ) ? static_cast<void> (0) : __assert_fail ("DeferredMetadataInfo.empty() && \"Must read all module-level metadata before function-level\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3768, __PRETTY_FUNCTION__)) | ||||
3768 | "Must read all module-level metadata before function-level")((DeferredMetadataInfo.empty() && "Must read all module-level metadata before function-level" ) ? static_cast<void> (0) : __assert_fail ("DeferredMetadataInfo.empty() && \"Must read all module-level metadata before function-level\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3768, __PRETTY_FUNCTION__)); | ||||
3769 | if (Error Err = MDLoader->parseFunctionMetadata()) | ||||
3770 | return Err; | ||||
3771 | break; | ||||
3772 | case bitc::USELIST_BLOCK_ID: | ||||
3773 | if (Error Err = parseUseLists()) | ||||
3774 | return Err; | ||||
3775 | break; | ||||
3776 | } | ||||
3777 | continue; | ||||
3778 | |||||
3779 | case BitstreamEntry::Record: | ||||
3780 | // The interesting case. | ||||
3781 | break; | ||||
3782 | } | ||||
3783 | |||||
3784 | // Read a record. | ||||
3785 | Record.clear(); | ||||
3786 | Instruction *I = nullptr; | ||||
3787 | Type *FullTy = nullptr; | ||||
3788 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | ||||
3789 | if (!MaybeBitCode) | ||||
3790 | return MaybeBitCode.takeError(); | ||||
3791 | switch (unsigned BitCode = MaybeBitCode.get()) { | ||||
3792 | default: // Default behavior: reject | ||||
3793 | return error("Invalid value"); | ||||
3794 | case bitc::FUNC_CODE_DECLAREBLOCKS: { // DECLAREBLOCKS: [nblocks] | ||||
3795 | if (Record.size() < 1 || Record[0] == 0) | ||||
3796 | return error("Invalid record"); | ||||
3797 | // Create all the basic blocks for the function. | ||||
3798 | FunctionBBs.resize(Record[0]); | ||||
3799 | |||||
3800 | // See if anything took the address of blocks in this function. | ||||
3801 | auto BBFRI = BasicBlockFwdRefs.find(F); | ||||
3802 | if (BBFRI == BasicBlockFwdRefs.end()) { | ||||
3803 | for (unsigned i = 0, e = FunctionBBs.size(); i != e; ++i) | ||||
3804 | FunctionBBs[i] = BasicBlock::Create(Context, "", F); | ||||
3805 | } else { | ||||
3806 | auto &BBRefs = BBFRI->second; | ||||
3807 | // Check for invalid basic block references. | ||||
3808 | if (BBRefs.size() > FunctionBBs.size()) | ||||
3809 | return error("Invalid ID"); | ||||
3810 | assert(!BBRefs.empty() && "Unexpected empty array")((!BBRefs.empty() && "Unexpected empty array") ? static_cast <void> (0) : __assert_fail ("!BBRefs.empty() && \"Unexpected empty array\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3810, __PRETTY_FUNCTION__)); | ||||
3811 | assert(!BBRefs.front() && "Invalid reference to entry block")((!BBRefs.front() && "Invalid reference to entry block" ) ? static_cast<void> (0) : __assert_fail ("!BBRefs.front() && \"Invalid reference to entry block\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3811, __PRETTY_FUNCTION__)); | ||||
3812 | for (unsigned I = 0, E = FunctionBBs.size(), RE = BBRefs.size(); I != E; | ||||
3813 | ++I) | ||||
3814 | if (I < RE && BBRefs[I]) { | ||||
3815 | BBRefs[I]->insertInto(F); | ||||
3816 | FunctionBBs[I] = BBRefs[I]; | ||||
3817 | } else { | ||||
3818 | FunctionBBs[I] = BasicBlock::Create(Context, "", F); | ||||
3819 | } | ||||
3820 | |||||
3821 | // Erase from the table. | ||||
3822 | BasicBlockFwdRefs.erase(BBFRI); | ||||
3823 | } | ||||
3824 | |||||
3825 | CurBB = FunctionBBs[0]; | ||||
3826 | continue; | ||||
3827 | } | ||||
3828 | |||||
3829 | case bitc::FUNC_CODE_DEBUG_LOC_AGAIN: // DEBUG_LOC_AGAIN | ||||
3830 | // This record indicates that the last instruction is at the same | ||||
3831 | // location as the previous instruction with a location. | ||||
3832 | I = getLastInstruction(); | ||||
3833 | |||||
3834 | if (!I) | ||||
3835 | return error("Invalid record"); | ||||
3836 | I->setDebugLoc(LastLoc); | ||||
3837 | I = nullptr; | ||||
3838 | continue; | ||||
3839 | |||||
3840 | case bitc::FUNC_CODE_DEBUG_LOC: { // DEBUG_LOC: [line, col, scope, ia] | ||||
3841 | I = getLastInstruction(); | ||||
3842 | if (!I || Record.size() < 4) | ||||
3843 | return error("Invalid record"); | ||||
3844 | |||||
3845 | unsigned Line = Record[0], Col = Record[1]; | ||||
3846 | unsigned ScopeID = Record[2], IAID = Record[3]; | ||||
3847 | bool isImplicitCode = Record.size() == 5 && Record[4]; | ||||
3848 | |||||
3849 | MDNode *Scope = nullptr, *IA = nullptr; | ||||
3850 | if (ScopeID) { | ||||
3851 | Scope = dyn_cast_or_null<MDNode>( | ||||
3852 | MDLoader->getMetadataFwdRefOrLoad(ScopeID - 1)); | ||||
3853 | if (!Scope) | ||||
3854 | return error("Invalid record"); | ||||
3855 | } | ||||
3856 | if (IAID) { | ||||
3857 | IA = dyn_cast_or_null<MDNode>( | ||||
3858 | MDLoader->getMetadataFwdRefOrLoad(IAID - 1)); | ||||
3859 | if (!IA) | ||||
3860 | return error("Invalid record"); | ||||
3861 | } | ||||
3862 | LastLoc = DebugLoc::get(Line, Col, Scope, IA, isImplicitCode); | ||||
3863 | I->setDebugLoc(LastLoc); | ||||
3864 | I = nullptr; | ||||
3865 | continue; | ||||
3866 | } | ||||
3867 | case bitc::FUNC_CODE_INST_UNOP: { // UNOP: [opval, ty, opcode] | ||||
3868 | unsigned OpNum = 0; | ||||
3869 | Value *LHS; | ||||
3870 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || | ||||
3871 | OpNum+1 > Record.size()) | ||||
3872 | return error("Invalid record"); | ||||
3873 | |||||
3874 | int Opc = getDecodedUnaryOpcode(Record[OpNum++], LHS->getType()); | ||||
3875 | if (Opc == -1) | ||||
3876 | return error("Invalid record"); | ||||
3877 | I = UnaryOperator::Create((Instruction::UnaryOps)Opc, LHS); | ||||
3878 | InstructionList.push_back(I); | ||||
3879 | if (OpNum < Record.size()) { | ||||
3880 | if (isa<FPMathOperator>(I)) { | ||||
3881 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); | ||||
3882 | if (FMF.any()) | ||||
3883 | I->setFastMathFlags(FMF); | ||||
3884 | } | ||||
3885 | } | ||||
3886 | break; | ||||
3887 | } | ||||
3888 | case bitc::FUNC_CODE_INST_BINOP: { // BINOP: [opval, ty, opval, opcode] | ||||
3889 | unsigned OpNum = 0; | ||||
3890 | Value *LHS, *RHS; | ||||
3891 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || | ||||
3892 | popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS) || | ||||
3893 | OpNum+1 > Record.size()) | ||||
3894 | return error("Invalid record"); | ||||
3895 | |||||
3896 | int Opc = getDecodedBinaryOpcode(Record[OpNum++], LHS->getType()); | ||||
3897 | if (Opc == -1) | ||||
3898 | return error("Invalid record"); | ||||
3899 | I = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS); | ||||
3900 | InstructionList.push_back(I); | ||||
3901 | if (OpNum < Record.size()) { | ||||
3902 | if (Opc == Instruction::Add || | ||||
3903 | Opc == Instruction::Sub || | ||||
3904 | Opc == Instruction::Mul || | ||||
3905 | Opc == Instruction::Shl) { | ||||
3906 | if (Record[OpNum] & (1 << bitc::OBO_NO_SIGNED_WRAP)) | ||||
3907 | cast<BinaryOperator>(I)->setHasNoSignedWrap(true); | ||||
3908 | if (Record[OpNum] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) | ||||
3909 | cast<BinaryOperator>(I)->setHasNoUnsignedWrap(true); | ||||
3910 | } else if (Opc == Instruction::SDiv || | ||||
3911 | Opc == Instruction::UDiv || | ||||
3912 | Opc == Instruction::LShr || | ||||
3913 | Opc == Instruction::AShr) { | ||||
3914 | if (Record[OpNum] & (1 << bitc::PEO_EXACT)) | ||||
3915 | cast<BinaryOperator>(I)->setIsExact(true); | ||||
3916 | } else if (isa<FPMathOperator>(I)) { | ||||
3917 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); | ||||
3918 | if (FMF.any()) | ||||
3919 | I->setFastMathFlags(FMF); | ||||
3920 | } | ||||
3921 | |||||
3922 | } | ||||
3923 | break; | ||||
3924 | } | ||||
3925 | case bitc::FUNC_CODE_INST_CAST: { // CAST: [opval, opty, destty, castopc] | ||||
3926 | unsigned OpNum = 0; | ||||
3927 | Value *Op; | ||||
3928 | if (getValueTypePair(Record, OpNum, NextValueNo, Op) || | ||||
3929 | OpNum+2 != Record.size()) | ||||
3930 | return error("Invalid record"); | ||||
3931 | |||||
3932 | FullTy = getFullyStructuredTypeByID(Record[OpNum]); | ||||
3933 | Type *ResTy = flattenPointerTypes(FullTy); | ||||
3934 | int Opc = getDecodedCastOpcode(Record[OpNum + 1]); | ||||
3935 | if (Opc == -1 || !ResTy) | ||||
3936 | return error("Invalid record"); | ||||
3937 | Instruction *Temp = nullptr; | ||||
3938 | if ((I = UpgradeBitCastInst(Opc, Op, ResTy, Temp))) { | ||||
3939 | if (Temp) { | ||||
3940 | InstructionList.push_back(Temp); | ||||
3941 | assert(CurBB && "No current BB?")((CurBB && "No current BB?") ? static_cast<void> (0) : __assert_fail ("CurBB && \"No current BB?\"", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 3941, __PRETTY_FUNCTION__)); | ||||
3942 | CurBB->getInstList().push_back(Temp); | ||||
3943 | } | ||||
3944 | } else { | ||||
3945 | auto CastOp = (Instruction::CastOps)Opc; | ||||
3946 | if (!CastInst::castIsValid(CastOp, Op, ResTy)) | ||||
3947 | return error("Invalid cast"); | ||||
3948 | I = CastInst::Create(CastOp, Op, ResTy); | ||||
3949 | } | ||||
3950 | InstructionList.push_back(I); | ||||
3951 | break; | ||||
3952 | } | ||||
3953 | case bitc::FUNC_CODE_INST_INBOUNDS_GEP_OLD: | ||||
3954 | case bitc::FUNC_CODE_INST_GEP_OLD: | ||||
3955 | case bitc::FUNC_CODE_INST_GEP: { // GEP: type, [n x operands] | ||||
3956 | unsigned OpNum = 0; | ||||
3957 | |||||
3958 | Type *Ty; | ||||
3959 | bool InBounds; | ||||
3960 | |||||
3961 | if (BitCode == bitc::FUNC_CODE_INST_GEP) { | ||||
3962 | InBounds = Record[OpNum++]; | ||||
3963 | FullTy = getFullyStructuredTypeByID(Record[OpNum++]); | ||||
3964 | Ty = flattenPointerTypes(FullTy); | ||||
3965 | } else { | ||||
3966 | InBounds = BitCode == bitc::FUNC_CODE_INST_INBOUNDS_GEP_OLD; | ||||
3967 | Ty = nullptr; | ||||
3968 | } | ||||
3969 | |||||
3970 | Value *BasePtr; | ||||
3971 | Type *FullBaseTy = nullptr; | ||||
3972 | if (getValueTypePair(Record, OpNum, NextValueNo, BasePtr, &FullBaseTy)) | ||||
3973 | return error("Invalid record"); | ||||
3974 | |||||
3975 | if (!Ty) { | ||||
3976 | std::tie(FullTy, Ty) = | ||||
3977 | getPointerElementTypes(FullBaseTy->getScalarType()); | ||||
3978 | } else if (Ty != getPointerElementFlatType(FullBaseTy->getScalarType())) | ||||
3979 | return error( | ||||
3980 | "Explicit gep type does not match pointee type of pointer operand"); | ||||
3981 | |||||
3982 | SmallVector<Value*, 16> GEPIdx; | ||||
3983 | while (OpNum != Record.size()) { | ||||
3984 | Value *Op; | ||||
3985 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | ||||
3986 | return error("Invalid record"); | ||||
3987 | GEPIdx.push_back(Op); | ||||
3988 | } | ||||
3989 | |||||
3990 | I = GetElementPtrInst::Create(Ty, BasePtr, GEPIdx); | ||||
3991 | FullTy = GetElementPtrInst::getGEPReturnType(FullTy, I, GEPIdx); | ||||
3992 | |||||
3993 | InstructionList.push_back(I); | ||||
3994 | if (InBounds) | ||||
3995 | cast<GetElementPtrInst>(I)->setIsInBounds(true); | ||||
3996 | break; | ||||
3997 | } | ||||
3998 | |||||
3999 | case bitc::FUNC_CODE_INST_EXTRACTVAL: { | ||||
4000 | // EXTRACTVAL: [opty, opval, n x indices] | ||||
4001 | unsigned OpNum = 0; | ||||
4002 | Value *Agg; | ||||
4003 | if (getValueTypePair(Record, OpNum, NextValueNo, Agg, &FullTy)) | ||||
4004 | return error("Invalid record"); | ||||
4005 | |||||
4006 | unsigned RecSize = Record.size(); | ||||
4007 | if (OpNum == RecSize) | ||||
4008 | return error("EXTRACTVAL: Invalid instruction with 0 indices"); | ||||
4009 | |||||
4010 | SmallVector<unsigned, 4> EXTRACTVALIdx; | ||||
4011 | for (; OpNum != RecSize; ++OpNum) { | ||||
4012 | bool IsArray = FullTy->isArrayTy(); | ||||
4013 | bool IsStruct = FullTy->isStructTy(); | ||||
4014 | uint64_t Index = Record[OpNum]; | ||||
4015 | |||||
4016 | if (!IsStruct && !IsArray) | ||||
4017 | return error("EXTRACTVAL: Invalid type"); | ||||
4018 | if ((unsigned)Index != Index) | ||||
4019 | return error("Invalid value"); | ||||
4020 | if (IsStruct && Index >= FullTy->getStructNumElements()) | ||||
4021 | return error("EXTRACTVAL: Invalid struct index"); | ||||
4022 | if (IsArray && Index >= FullTy->getArrayNumElements()) | ||||
4023 | return error("EXTRACTVAL: Invalid array index"); | ||||
4024 | EXTRACTVALIdx.push_back((unsigned)Index); | ||||
4025 | |||||
4026 | if (IsStruct) | ||||
4027 | FullTy = FullTy->getStructElementType(Index); | ||||
4028 | else | ||||
4029 | FullTy = FullTy->getArrayElementType(); | ||||
4030 | } | ||||
4031 | |||||
4032 | I = ExtractValueInst::Create(Agg, EXTRACTVALIdx); | ||||
4033 | InstructionList.push_back(I); | ||||
4034 | break; | ||||
4035 | } | ||||
4036 | |||||
4037 | case bitc::FUNC_CODE_INST_INSERTVAL: { | ||||
4038 | // INSERTVAL: [opty, opval, opty, opval, n x indices] | ||||
4039 | unsigned OpNum = 0; | ||||
4040 | Value *Agg; | ||||
4041 | if (getValueTypePair(Record, OpNum, NextValueNo, Agg, &FullTy)) | ||||
4042 | return error("Invalid record"); | ||||
4043 | Value *Val; | ||||
4044 | if (getValueTypePair(Record, OpNum, NextValueNo, Val)) | ||||
4045 | return error("Invalid record"); | ||||
4046 | |||||
4047 | unsigned RecSize = Record.size(); | ||||
4048 | if (OpNum == RecSize) | ||||
4049 | return error("INSERTVAL: Invalid instruction with 0 indices"); | ||||
4050 | |||||
4051 | SmallVector<unsigned, 4> INSERTVALIdx; | ||||
4052 | Type *CurTy = Agg->getType(); | ||||
4053 | for (; OpNum != RecSize; ++OpNum) { | ||||
4054 | bool IsArray = CurTy->isArrayTy(); | ||||
4055 | bool IsStruct = CurTy->isStructTy(); | ||||
4056 | uint64_t Index = Record[OpNum]; | ||||
4057 | |||||
4058 | if (!IsStruct && !IsArray) | ||||
4059 | return error("INSERTVAL: Invalid type"); | ||||
4060 | if ((unsigned)Index != Index) | ||||
4061 | return error("Invalid value"); | ||||
4062 | if (IsStruct && Index >= CurTy->getStructNumElements()) | ||||
4063 | return error("INSERTVAL: Invalid struct index"); | ||||
4064 | if (IsArray && Index >= CurTy->getArrayNumElements()) | ||||
4065 | return error("INSERTVAL: Invalid array index"); | ||||
4066 | |||||
4067 | INSERTVALIdx.push_back((unsigned)Index); | ||||
4068 | if (IsStruct) | ||||
4069 | CurTy = CurTy->getStructElementType(Index); | ||||
4070 | else | ||||
4071 | CurTy = CurTy->getArrayElementType(); | ||||
4072 | } | ||||
4073 | |||||
4074 | if (CurTy != Val->getType()) | ||||
4075 | return error("Inserted value type doesn't match aggregate type"); | ||||
4076 | |||||
4077 | I = InsertValueInst::Create(Agg, Val, INSERTVALIdx); | ||||
4078 | InstructionList.push_back(I); | ||||
4079 | break; | ||||
4080 | } | ||||
4081 | |||||
4082 | case bitc::FUNC_CODE_INST_SELECT: { // SELECT: [opval, ty, opval, opval] | ||||
4083 | // obsolete form of select | ||||
4084 | // handles select i1 ... in old bitcode | ||||
4085 | unsigned OpNum = 0; | ||||
4086 | Value *TrueVal, *FalseVal, *Cond; | ||||
4087 | if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal, &FullTy) || | ||||
4088 | popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) || | ||||
4089 | popValue(Record, OpNum, NextValueNo, Type::getInt1Ty(Context), Cond)) | ||||
4090 | return error("Invalid record"); | ||||
4091 | |||||
4092 | I = SelectInst::Create(Cond, TrueVal, FalseVal); | ||||
4093 | InstructionList.push_back(I); | ||||
4094 | break; | ||||
4095 | } | ||||
4096 | |||||
4097 | case bitc::FUNC_CODE_INST_VSELECT: {// VSELECT: [ty,opval,opval,predty,pred] | ||||
4098 | // new form of select | ||||
4099 | // handles select i1 or select [N x i1] | ||||
4100 | unsigned OpNum = 0; | ||||
4101 | Value *TrueVal, *FalseVal, *Cond; | ||||
4102 | if (getValueTypePair(Record, OpNum, NextValueNo, TrueVal, &FullTy) || | ||||
4103 | popValue(Record, OpNum, NextValueNo, TrueVal->getType(), FalseVal) || | ||||
4104 | getValueTypePair(Record, OpNum, NextValueNo, Cond)) | ||||
4105 | return error("Invalid record"); | ||||
4106 | |||||
4107 | // select condition can be either i1 or [N x i1] | ||||
4108 | if (VectorType* vector_type = | ||||
4109 | dyn_cast<VectorType>(Cond->getType())) { | ||||
4110 | // expect <n x i1> | ||||
4111 | if (vector_type->getElementType() != Type::getInt1Ty(Context)) | ||||
4112 | return error("Invalid type for value"); | ||||
4113 | } else { | ||||
4114 | // expect i1 | ||||
4115 | if (Cond->getType() != Type::getInt1Ty(Context)) | ||||
4116 | return error("Invalid type for value"); | ||||
4117 | } | ||||
4118 | |||||
4119 | I = SelectInst::Create(Cond, TrueVal, FalseVal); | ||||
4120 | InstructionList.push_back(I); | ||||
4121 | if (OpNum < Record.size() && isa<FPMathOperator>(I)) { | ||||
4122 | FastMathFlags FMF = getDecodedFastMathFlags(Record[OpNum]); | ||||
4123 | if (FMF.any()) | ||||
4124 | I->setFastMathFlags(FMF); | ||||
4125 | } | ||||
4126 | break; | ||||
4127 | } | ||||
4128 | |||||
4129 | case bitc::FUNC_CODE_INST_EXTRACTELT: { // EXTRACTELT: [opty, opval, opval] | ||||
4130 | unsigned OpNum = 0; | ||||
4131 | Value *Vec, *Idx; | ||||
4132 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec, &FullTy) || | ||||
4133 | getValueTypePair(Record, OpNum, NextValueNo, Idx)) | ||||
4134 | return error("Invalid record"); | ||||
4135 | if (!Vec->getType()->isVectorTy()) | ||||
4136 | return error("Invalid type for value"); | ||||
4137 | I = ExtractElementInst::Create(Vec, Idx); | ||||
4138 | FullTy = FullTy->getVectorElementType(); | ||||
4139 | InstructionList.push_back(I); | ||||
4140 | break; | ||||
4141 | } | ||||
4142 | |||||
4143 | case bitc::FUNC_CODE_INST_INSERTELT: { // INSERTELT: [ty, opval,opval,opval] | ||||
4144 | unsigned OpNum = 0; | ||||
4145 | Value *Vec, *Elt, *Idx; | ||||
4146 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec, &FullTy)) | ||||
4147 | return error("Invalid record"); | ||||
4148 | if (!Vec->getType()->isVectorTy()) | ||||
4149 | return error("Invalid type for value"); | ||||
4150 | if (popValue(Record, OpNum, NextValueNo, | ||||
4151 | cast<VectorType>(Vec->getType())->getElementType(), Elt) || | ||||
4152 | getValueTypePair(Record, OpNum, NextValueNo, Idx)) | ||||
4153 | return error("Invalid record"); | ||||
4154 | I = InsertElementInst::Create(Vec, Elt, Idx); | ||||
4155 | InstructionList.push_back(I); | ||||
4156 | break; | ||||
4157 | } | ||||
4158 | |||||
4159 | case bitc::FUNC_CODE_INST_SHUFFLEVEC: {// SHUFFLEVEC: [opval,ty,opval,opval] | ||||
4160 | unsigned OpNum = 0; | ||||
4161 | Value *Vec1, *Vec2, *Mask; | ||||
4162 | if (getValueTypePair(Record, OpNum, NextValueNo, Vec1, &FullTy) || | ||||
4163 | popValue(Record, OpNum, NextValueNo, Vec1->getType(), Vec2)) | ||||
4164 | return error("Invalid record"); | ||||
4165 | |||||
4166 | if (getValueTypePair(Record, OpNum, NextValueNo, Mask)) | ||||
4167 | return error("Invalid record"); | ||||
4168 | if (!Vec1->getType()->isVectorTy() || !Vec2->getType()->isVectorTy()) | ||||
4169 | return error("Invalid type for value"); | ||||
4170 | I = new ShuffleVectorInst(Vec1, Vec2, Mask); | ||||
4171 | FullTy = VectorType::get(FullTy->getVectorElementType(), | ||||
4172 | Mask->getType()->getVectorNumElements()); | ||||
4173 | InstructionList.push_back(I); | ||||
4174 | break; | ||||
4175 | } | ||||
4176 | |||||
4177 | case bitc::FUNC_CODE_INST_CMP: // CMP: [opty, opval, opval, pred] | ||||
4178 | // Old form of ICmp/FCmp returning bool | ||||
4179 | // Existed to differentiate between icmp/fcmp and vicmp/vfcmp which were | ||||
4180 | // both legal on vectors but had different behaviour. | ||||
4181 | case bitc::FUNC_CODE_INST_CMP2: { // CMP2: [opty, opval, opval, pred] | ||||
4182 | // FCmp/ICmp returning bool or vector of bool | ||||
4183 | |||||
4184 | unsigned OpNum = 0; | ||||
4185 | Value *LHS, *RHS; | ||||
4186 | if (getValueTypePair(Record, OpNum, NextValueNo, LHS) || | ||||
4187 | popValue(Record, OpNum, NextValueNo, LHS->getType(), RHS)) | ||||
4188 | return error("Invalid record"); | ||||
4189 | |||||
4190 | if (OpNum >= Record.size()) | ||||
4191 | return error( | ||||
4192 | "Invalid record: operand number exceeded available operands"); | ||||
4193 | |||||
4194 | unsigned PredVal = Record[OpNum]; | ||||
4195 | bool IsFP = LHS->getType()->isFPOrFPVectorTy(); | ||||
4196 | FastMathFlags FMF; | ||||
4197 | if (IsFP && Record.size() > OpNum+1) | ||||
4198 | FMF = getDecodedFastMathFlags(Record[++OpNum]); | ||||
4199 | |||||
4200 | if (OpNum+1 != Record.size()) | ||||
4201 | return error("Invalid record"); | ||||
4202 | |||||
4203 | if (LHS->getType()->isFPOrFPVectorTy()) | ||||
4204 | I = new FCmpInst((FCmpInst::Predicate)PredVal, LHS, RHS); | ||||
4205 | else | ||||
4206 | I = new ICmpInst((ICmpInst::Predicate)PredVal, LHS, RHS); | ||||
4207 | |||||
4208 | if (FMF.any()) | ||||
4209 | I->setFastMathFlags(FMF); | ||||
4210 | InstructionList.push_back(I); | ||||
4211 | break; | ||||
4212 | } | ||||
4213 | |||||
4214 | case bitc::FUNC_CODE_INST_RET: // RET: [opty,opval<optional>] | ||||
4215 | { | ||||
4216 | unsigned Size = Record.size(); | ||||
4217 | if (Size == 0) { | ||||
4218 | I = ReturnInst::Create(Context); | ||||
4219 | InstructionList.push_back(I); | ||||
4220 | break; | ||||
4221 | } | ||||
4222 | |||||
4223 | unsigned OpNum = 0; | ||||
4224 | Value *Op = nullptr; | ||||
4225 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | ||||
4226 | return error("Invalid record"); | ||||
4227 | if (OpNum != Record.size()) | ||||
4228 | return error("Invalid record"); | ||||
4229 | |||||
4230 | I = ReturnInst::Create(Context, Op); | ||||
4231 | InstructionList.push_back(I); | ||||
4232 | break; | ||||
4233 | } | ||||
4234 | case bitc::FUNC_CODE_INST_BR: { // BR: [bb#, bb#, opval] or [bb#] | ||||
4235 | if (Record.size() != 1 && Record.size() != 3) | ||||
4236 | return error("Invalid record"); | ||||
4237 | BasicBlock *TrueDest = getBasicBlock(Record[0]); | ||||
4238 | if (!TrueDest) | ||||
4239 | return error("Invalid record"); | ||||
4240 | |||||
4241 | if (Record.size() == 1) { | ||||
4242 | I = BranchInst::Create(TrueDest); | ||||
4243 | InstructionList.push_back(I); | ||||
4244 | } | ||||
4245 | else { | ||||
4246 | BasicBlock *FalseDest = getBasicBlock(Record[1]); | ||||
4247 | Value *Cond = getValue(Record, 2, NextValueNo, | ||||
4248 | Type::getInt1Ty(Context)); | ||||
4249 | if (!FalseDest || !Cond) | ||||
4250 | return error("Invalid record"); | ||||
4251 | I = BranchInst::Create(TrueDest, FalseDest, Cond); | ||||
4252 | InstructionList.push_back(I); | ||||
4253 | } | ||||
4254 | break; | ||||
4255 | } | ||||
4256 | case bitc::FUNC_CODE_INST_CLEANUPRET: { // CLEANUPRET: [val] or [val,bb#] | ||||
4257 | if (Record.size() != 1 && Record.size() != 2) | ||||
4258 | return error("Invalid record"); | ||||
4259 | unsigned Idx = 0; | ||||
4260 | Value *CleanupPad = | ||||
4261 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); | ||||
4262 | if (!CleanupPad) | ||||
4263 | return error("Invalid record"); | ||||
4264 | BasicBlock *UnwindDest = nullptr; | ||||
4265 | if (Record.size() == 2) { | ||||
4266 | UnwindDest = getBasicBlock(Record[Idx++]); | ||||
4267 | if (!UnwindDest) | ||||
4268 | return error("Invalid record"); | ||||
4269 | } | ||||
4270 | |||||
4271 | I = CleanupReturnInst::Create(CleanupPad, UnwindDest); | ||||
4272 | InstructionList.push_back(I); | ||||
4273 | break; | ||||
4274 | } | ||||
4275 | case bitc::FUNC_CODE_INST_CATCHRET: { // CATCHRET: [val,bb#] | ||||
4276 | if (Record.size() != 2) | ||||
4277 | return error("Invalid record"); | ||||
4278 | unsigned Idx = 0; | ||||
4279 | Value *CatchPad = | ||||
4280 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); | ||||
4281 | if (!CatchPad) | ||||
4282 | return error("Invalid record"); | ||||
4283 | BasicBlock *BB = getBasicBlock(Record[Idx++]); | ||||
4284 | if (!BB) | ||||
4285 | return error("Invalid record"); | ||||
4286 | |||||
4287 | I = CatchReturnInst::Create(CatchPad, BB); | ||||
4288 | InstructionList.push_back(I); | ||||
4289 | break; | ||||
4290 | } | ||||
4291 | case bitc::FUNC_CODE_INST_CATCHSWITCH: { // CATCHSWITCH: [tok,num,(bb)*,bb?] | ||||
4292 | // We must have, at minimum, the outer scope and the number of arguments. | ||||
4293 | if (Record.size() < 2) | ||||
4294 | return error("Invalid record"); | ||||
4295 | |||||
4296 | unsigned Idx = 0; | ||||
4297 | |||||
4298 | Value *ParentPad = | ||||
4299 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); | ||||
4300 | |||||
4301 | unsigned NumHandlers = Record[Idx++]; | ||||
4302 | |||||
4303 | SmallVector<BasicBlock *, 2> Handlers; | ||||
4304 | for (unsigned Op = 0; Op != NumHandlers; ++Op) { | ||||
4305 | BasicBlock *BB = getBasicBlock(Record[Idx++]); | ||||
4306 | if (!BB) | ||||
4307 | return error("Invalid record"); | ||||
4308 | Handlers.push_back(BB); | ||||
4309 | } | ||||
4310 | |||||
4311 | BasicBlock *UnwindDest = nullptr; | ||||
4312 | if (Idx + 1 == Record.size()) { | ||||
4313 | UnwindDest = getBasicBlock(Record[Idx++]); | ||||
4314 | if (!UnwindDest) | ||||
4315 | return error("Invalid record"); | ||||
4316 | } | ||||
4317 | |||||
4318 | if (Record.size() != Idx) | ||||
4319 | return error("Invalid record"); | ||||
4320 | |||||
4321 | auto *CatchSwitch = | ||||
4322 | CatchSwitchInst::Create(ParentPad, UnwindDest, NumHandlers); | ||||
4323 | for (BasicBlock *Handler : Handlers) | ||||
4324 | CatchSwitch->addHandler(Handler); | ||||
4325 | I = CatchSwitch; | ||||
4326 | InstructionList.push_back(I); | ||||
4327 | break; | ||||
4328 | } | ||||
4329 | case bitc::FUNC_CODE_INST_CATCHPAD: | ||||
4330 | case bitc::FUNC_CODE_INST_CLEANUPPAD: { // [tok,num,(ty,val)*] | ||||
4331 | // We must have, at minimum, the outer scope and the number of arguments. | ||||
4332 | if (Record.size() < 2) | ||||
4333 | return error("Invalid record"); | ||||
4334 | |||||
4335 | unsigned Idx = 0; | ||||
4336 | |||||
4337 | Value *ParentPad = | ||||
4338 | getValue(Record, Idx++, NextValueNo, Type::getTokenTy(Context)); | ||||
4339 | |||||
4340 | unsigned NumArgOperands = Record[Idx++]; | ||||
4341 | |||||
4342 | SmallVector<Value *, 2> Args; | ||||
4343 | for (unsigned Op = 0; Op != NumArgOperands; ++Op) { | ||||
4344 | Value *Val; | ||||
4345 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) | ||||
4346 | return error("Invalid record"); | ||||
4347 | Args.push_back(Val); | ||||
4348 | } | ||||
4349 | |||||
4350 | if (Record.size() != Idx) | ||||
4351 | return error("Invalid record"); | ||||
4352 | |||||
4353 | if (BitCode == bitc::FUNC_CODE_INST_CLEANUPPAD) | ||||
4354 | I = CleanupPadInst::Create(ParentPad, Args); | ||||
4355 | else | ||||
4356 | I = CatchPadInst::Create(ParentPad, Args); | ||||
4357 | InstructionList.push_back(I); | ||||
4358 | break; | ||||
4359 | } | ||||
4360 | case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...] | ||||
4361 | // Check magic | ||||
4362 | if ((Record[0] >> 16) == SWITCH_INST_MAGIC) { | ||||
4363 | // "New" SwitchInst format with case ranges. The changes to write this | ||||
4364 | // format were reverted but we still recognize bitcode that uses it. | ||||
4365 | // Hopefully someday we will have support for case ranges and can use | ||||
4366 | // this format again. | ||||
4367 | |||||
4368 | Type *OpTy = getTypeByID(Record[1]); | ||||
4369 | unsigned ValueBitWidth = cast<IntegerType>(OpTy)->getBitWidth(); | ||||
4370 | |||||
4371 | Value *Cond = getValue(Record, 2, NextValueNo, OpTy); | ||||
4372 | BasicBlock *Default = getBasicBlock(Record[3]); | ||||
4373 | if (!OpTy || !Cond || !Default) | ||||
4374 | return error("Invalid record"); | ||||
4375 | |||||
4376 | unsigned NumCases = Record[4]; | ||||
4377 | |||||
4378 | SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases); | ||||
4379 | InstructionList.push_back(SI); | ||||
4380 | |||||
4381 | unsigned CurIdx = 5; | ||||
4382 | for (unsigned i = 0; i != NumCases; ++i) { | ||||
4383 | SmallVector<ConstantInt*, 1> CaseVals; | ||||
4384 | unsigned NumItems = Record[CurIdx++]; | ||||
4385 | for (unsigned ci = 0; ci != NumItems; ++ci) { | ||||
4386 | bool isSingleNumber = Record[CurIdx++]; | ||||
4387 | |||||
4388 | APInt Low; | ||||
4389 | unsigned ActiveWords = 1; | ||||
4390 | if (ValueBitWidth > 64) | ||||
4391 | ActiveWords = Record[CurIdx++]; | ||||
4392 | Low = readWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords), | ||||
4393 | ValueBitWidth); | ||||
4394 | CurIdx += ActiveWords; | ||||
4395 | |||||
4396 | if (!isSingleNumber) { | ||||
4397 | ActiveWords = 1; | ||||
4398 | if (ValueBitWidth > 64) | ||||
4399 | ActiveWords = Record[CurIdx++]; | ||||
4400 | APInt High = readWideAPInt( | ||||
4401 | makeArrayRef(&Record[CurIdx], ActiveWords), ValueBitWidth); | ||||
4402 | CurIdx += ActiveWords; | ||||
4403 | |||||
4404 | // FIXME: It is not clear whether values in the range should be | ||||
4405 | // compared as signed or unsigned values. The partially | ||||
4406 | // implemented changes that used this format in the past used | ||||
4407 | // unsigned comparisons. | ||||
4408 | for ( ; Low.ule(High); ++Low) | ||||
4409 | CaseVals.push_back(ConstantInt::get(Context, Low)); | ||||
4410 | } else | ||||
4411 | CaseVals.push_back(ConstantInt::get(Context, Low)); | ||||
4412 | } | ||||
4413 | BasicBlock *DestBB = getBasicBlock(Record[CurIdx++]); | ||||
4414 | for (SmallVector<ConstantInt*, 1>::iterator cvi = CaseVals.begin(), | ||||
4415 | cve = CaseVals.end(); cvi != cve; ++cvi) | ||||
4416 | SI->addCase(*cvi, DestBB); | ||||
4417 | } | ||||
4418 | I = SI; | ||||
4419 | break; | ||||
4420 | } | ||||
4421 | |||||
4422 | // Old SwitchInst format without case ranges. | ||||
4423 | |||||
4424 | if (Record.size() < 3 || (Record.size() & 1) == 0) | ||||
4425 | return error("Invalid record"); | ||||
4426 | Type *OpTy = getTypeByID(Record[0]); | ||||
4427 | Value *Cond = getValue(Record, 1, NextValueNo, OpTy); | ||||
4428 | BasicBlock *Default = getBasicBlock(Record[2]); | ||||
4429 | if (!OpTy || !Cond || !Default) | ||||
4430 | return error("Invalid record"); | ||||
4431 | unsigned NumCases = (Record.size()-3)/2; | ||||
4432 | SwitchInst *SI = SwitchInst::Create(Cond, Default, NumCases); | ||||
4433 | InstructionList.push_back(SI); | ||||
4434 | for (unsigned i = 0, e = NumCases; i != e; ++i) { | ||||
4435 | ConstantInt *CaseVal = | ||||
4436 | dyn_cast_or_null<ConstantInt>(getFnValueByID(Record[3+i*2], OpTy)); | ||||
4437 | BasicBlock *DestBB = getBasicBlock(Record[1+3+i*2]); | ||||
4438 | if (!CaseVal || !DestBB) { | ||||
4439 | delete SI; | ||||
4440 | return error("Invalid record"); | ||||
4441 | } | ||||
4442 | SI->addCase(CaseVal, DestBB); | ||||
4443 | } | ||||
4444 | I = SI; | ||||
4445 | break; | ||||
4446 | } | ||||
4447 | case bitc::FUNC_CODE_INST_INDIRECTBR: { // INDIRECTBR: [opty, op0, op1, ...] | ||||
4448 | if (Record.size() < 2) | ||||
4449 | return error("Invalid record"); | ||||
4450 | Type *OpTy = getTypeByID(Record[0]); | ||||
4451 | Value *Address = getValue(Record, 1, NextValueNo, OpTy); | ||||
4452 | if (!OpTy || !Address) | ||||
4453 | return error("Invalid record"); | ||||
4454 | unsigned NumDests = Record.size()-2; | ||||
4455 | IndirectBrInst *IBI = IndirectBrInst::Create(Address, NumDests); | ||||
4456 | InstructionList.push_back(IBI); | ||||
4457 | for (unsigned i = 0, e = NumDests; i != e; ++i) { | ||||
4458 | if (BasicBlock *DestBB = getBasicBlock(Record[2+i])) { | ||||
4459 | IBI->addDestination(DestBB); | ||||
4460 | } else { | ||||
4461 | delete IBI; | ||||
4462 | return error("Invalid record"); | ||||
4463 | } | ||||
4464 | } | ||||
4465 | I = IBI; | ||||
4466 | break; | ||||
4467 | } | ||||
4468 | |||||
4469 | case bitc::FUNC_CODE_INST_INVOKE: { | ||||
4470 | // INVOKE: [attrs, cc, normBB, unwindBB, fnty, op0,op1,op2, ...] | ||||
4471 | if (Record.size() < 4) | ||||
4472 | return error("Invalid record"); | ||||
4473 | unsigned OpNum = 0; | ||||
4474 | AttributeList PAL = getAttributes(Record[OpNum++]); | ||||
4475 | unsigned CCInfo = Record[OpNum++]; | ||||
4476 | BasicBlock *NormalBB = getBasicBlock(Record[OpNum++]); | ||||
4477 | BasicBlock *UnwindBB = getBasicBlock(Record[OpNum++]); | ||||
4478 | |||||
4479 | FunctionType *FTy = nullptr; | ||||
4480 | FunctionType *FullFTy = nullptr; | ||||
4481 | if ((CCInfo >> 13) & 1) { | ||||
4482 | FullFTy = | ||||
4483 | dyn_cast<FunctionType>(getFullyStructuredTypeByID(Record[OpNum++])); | ||||
4484 | if (!FullFTy) | ||||
4485 | return error("Explicit invoke type is not a function type"); | ||||
4486 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); | ||||
4487 | } | ||||
4488 | |||||
4489 | Value *Callee; | ||||
4490 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee, &FullTy)) | ||||
4491 | return error("Invalid record"); | ||||
4492 | |||||
4493 | PointerType *CalleeTy = dyn_cast<PointerType>(Callee->getType()); | ||||
4494 | if (!CalleeTy) | ||||
4495 | return error("Callee is not a pointer"); | ||||
4496 | if (!FTy) { | ||||
4497 | FullFTy = | ||||
4498 | dyn_cast<FunctionType>(cast<PointerType>(FullTy)->getElementType()); | ||||
4499 | if (!FullFTy) | ||||
4500 | return error("Callee is not of pointer to function type"); | ||||
4501 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); | ||||
4502 | } else if (getPointerElementFlatType(FullTy) != FTy) | ||||
4503 | return error("Explicit invoke type does not match pointee type of " | ||||
4504 | "callee operand"); | ||||
4505 | if (Record.size() < FTy->getNumParams() + OpNum) | ||||
4506 | return error("Insufficient operands to call"); | ||||
4507 | |||||
4508 | SmallVector<Value*, 16> Ops; | ||||
4509 | SmallVector<Type *, 16> ArgsFullTys; | ||||
4510 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { | ||||
4511 | Ops.push_back(getValue(Record, OpNum, NextValueNo, | ||||
4512 | FTy->getParamType(i))); | ||||
4513 | ArgsFullTys.push_back(FullFTy->getParamType(i)); | ||||
4514 | if (!Ops.back()) | ||||
4515 | return error("Invalid record"); | ||||
4516 | } | ||||
4517 | |||||
4518 | if (!FTy->isVarArg()) { | ||||
4519 | if (Record.size() != OpNum) | ||||
4520 | return error("Invalid record"); | ||||
4521 | } else { | ||||
4522 | // Read type/value pairs for varargs params. | ||||
4523 | while (OpNum != Record.size()) { | ||||
4524 | Value *Op; | ||||
4525 | Type *FullTy; | ||||
4526 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy)) | ||||
4527 | return error("Invalid record"); | ||||
4528 | Ops.push_back(Op); | ||||
4529 | ArgsFullTys.push_back(FullTy); | ||||
4530 | } | ||||
4531 | } | ||||
4532 | |||||
4533 | I = InvokeInst::Create(FTy, Callee, NormalBB, UnwindBB, Ops, | ||||
4534 | OperandBundles); | ||||
4535 | FullTy = FullFTy->getReturnType(); | ||||
4536 | OperandBundles.clear(); | ||||
4537 | InstructionList.push_back(I); | ||||
4538 | cast<InvokeInst>(I)->setCallingConv( | ||||
4539 | static_cast<CallingConv::ID>(CallingConv::MaxID & CCInfo)); | ||||
4540 | cast<InvokeInst>(I)->setAttributes(PAL); | ||||
4541 | propagateByValTypes(cast<CallBase>(I), ArgsFullTys); | ||||
4542 | |||||
4543 | break; | ||||
4544 | } | ||||
4545 | case bitc::FUNC_CODE_INST_RESUME: { // RESUME: [opval] | ||||
4546 | unsigned Idx = 0; | ||||
4547 | Value *Val = nullptr; | ||||
4548 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) | ||||
4549 | return error("Invalid record"); | ||||
4550 | I = ResumeInst::Create(Val); | ||||
4551 | InstructionList.push_back(I); | ||||
4552 | break; | ||||
4553 | } | ||||
4554 | case bitc::FUNC_CODE_INST_CALLBR: { | ||||
4555 | // CALLBR: [attr, cc, norm, transfs, fty, fnid, args] | ||||
4556 | unsigned OpNum = 0; | ||||
4557 | AttributeList PAL = getAttributes(Record[OpNum++]); | ||||
4558 | unsigned CCInfo = Record[OpNum++]; | ||||
4559 | |||||
4560 | BasicBlock *DefaultDest = getBasicBlock(Record[OpNum++]); | ||||
4561 | unsigned NumIndirectDests = Record[OpNum++]; | ||||
4562 | SmallVector<BasicBlock *, 16> IndirectDests; | ||||
4563 | for (unsigned i = 0, e = NumIndirectDests; i != e; ++i) | ||||
4564 | IndirectDests.push_back(getBasicBlock(Record[OpNum++])); | ||||
4565 | |||||
4566 | FunctionType *FTy = nullptr; | ||||
4567 | FunctionType *FullFTy = nullptr; | ||||
4568 | if ((CCInfo >> bitc::CALL_EXPLICIT_TYPE) & 1) { | ||||
4569 | FullFTy = | ||||
4570 | dyn_cast<FunctionType>(getFullyStructuredTypeByID(Record[OpNum++])); | ||||
4571 | if (!FullFTy) | ||||
4572 | return error("Explicit call type is not a function type"); | ||||
4573 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); | ||||
4574 | } | ||||
4575 | |||||
4576 | Value *Callee; | ||||
4577 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee, &FullTy)) | ||||
4578 | return error("Invalid record"); | ||||
4579 | |||||
4580 | PointerType *OpTy = dyn_cast<PointerType>(Callee->getType()); | ||||
4581 | if (!OpTy) | ||||
4582 | return error("Callee is not a pointer type"); | ||||
4583 | if (!FTy) { | ||||
4584 | FullFTy = | ||||
4585 | dyn_cast<FunctionType>(cast<PointerType>(FullTy)->getElementType()); | ||||
4586 | if (!FullFTy) | ||||
4587 | return error("Callee is not of pointer to function type"); | ||||
4588 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); | ||||
4589 | } else if (getPointerElementFlatType(FullTy) != FTy) | ||||
4590 | return error("Explicit call type does not match pointee type of " | ||||
4591 | "callee operand"); | ||||
4592 | if (Record.size() < FTy->getNumParams() + OpNum) | ||||
4593 | return error("Insufficient operands to call"); | ||||
4594 | |||||
4595 | SmallVector<Value*, 16> Args; | ||||
4596 | // Read the fixed params. | ||||
4597 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { | ||||
4598 | if (FTy->getParamType(i)->isLabelTy()) | ||||
4599 | Args.push_back(getBasicBlock(Record[OpNum])); | ||||
4600 | else | ||||
4601 | Args.push_back(getValue(Record, OpNum, NextValueNo, | ||||
4602 | FTy->getParamType(i))); | ||||
4603 | if (!Args.back()) | ||||
4604 | return error("Invalid record"); | ||||
4605 | } | ||||
4606 | |||||
4607 | // Read type/value pairs for varargs params. | ||||
4608 | if (!FTy->isVarArg()) { | ||||
4609 | if (OpNum != Record.size()) | ||||
4610 | return error("Invalid record"); | ||||
4611 | } else { | ||||
4612 | while (OpNum != Record.size()) { | ||||
4613 | Value *Op; | ||||
4614 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | ||||
4615 | return error("Invalid record"); | ||||
4616 | Args.push_back(Op); | ||||
4617 | } | ||||
4618 | } | ||||
4619 | |||||
4620 | I = CallBrInst::Create(FTy, Callee, DefaultDest, IndirectDests, Args, | ||||
4621 | OperandBundles); | ||||
4622 | FullTy = FullFTy->getReturnType(); | ||||
4623 | OperandBundles.clear(); | ||||
4624 | InstructionList.push_back(I); | ||||
4625 | cast<CallBrInst>(I)->setCallingConv( | ||||
4626 | static_cast<CallingConv::ID>((0x7ff & CCInfo) >> bitc::CALL_CCONV)); | ||||
4627 | cast<CallBrInst>(I)->setAttributes(PAL); | ||||
4628 | break; | ||||
4629 | } | ||||
4630 | case bitc::FUNC_CODE_INST_UNREACHABLE: // UNREACHABLE | ||||
4631 | I = new UnreachableInst(Context); | ||||
4632 | InstructionList.push_back(I); | ||||
4633 | break; | ||||
4634 | case bitc::FUNC_CODE_INST_PHI: { // PHI: [ty, val0,bb0, ...] | ||||
4635 | if (Record.size() < 1) | ||||
4636 | return error("Invalid record"); | ||||
4637 | // The first record specifies the type. | ||||
4638 | FullTy = getFullyStructuredTypeByID(Record[0]); | ||||
4639 | Type *Ty = flattenPointerTypes(FullTy); | ||||
4640 | if (!Ty) | ||||
4641 | return error("Invalid record"); | ||||
4642 | |||||
4643 | // Phi arguments are pairs of records of [value, basic block]. | ||||
4644 | // There is an optional final record for fast-math-flags if this phi has a | ||||
4645 | // floating-point type. | ||||
4646 | size_t NumArgs = (Record.size() - 1) / 2; | ||||
4647 | PHINode *PN = PHINode::Create(Ty, NumArgs); | ||||
4648 | if ((Record.size() - 1) % 2 == 1 && !isa<FPMathOperator>(PN)) | ||||
4649 | return error("Invalid record"); | ||||
4650 | InstructionList.push_back(PN); | ||||
4651 | |||||
4652 | for (unsigned i = 0; i != NumArgs; i++) { | ||||
4653 | Value *V; | ||||
4654 | // With the new function encoding, it is possible that operands have | ||||
4655 | // negative IDs (for forward references). Use a signed VBR | ||||
4656 | // representation to keep the encoding small. | ||||
4657 | if (UseRelativeIDs) | ||||
4658 | V = getValueSigned(Record, i * 2 + 1, NextValueNo, Ty); | ||||
4659 | else | ||||
4660 | V = getValue(Record, i * 2 + 1, NextValueNo, Ty); | ||||
4661 | BasicBlock *BB = getBasicBlock(Record[i * 2 + 2]); | ||||
4662 | if (!V || !BB) | ||||
4663 | return error("Invalid record"); | ||||
4664 | PN->addIncoming(V, BB); | ||||
4665 | } | ||||
4666 | I = PN; | ||||
4667 | |||||
4668 | // If there are an even number of records, the final record must be FMF. | ||||
4669 | if (Record.size() % 2 == 0) { | ||||
4670 | assert(isa<FPMathOperator>(I) && "Unexpected phi type")((isa<FPMathOperator>(I) && "Unexpected phi type" ) ? static_cast<void> (0) : __assert_fail ("isa<FPMathOperator>(I) && \"Unexpected phi type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4670, __PRETTY_FUNCTION__)); | ||||
4671 | FastMathFlags FMF = getDecodedFastMathFlags(Record[Record.size() - 1]); | ||||
4672 | if (FMF.any()) | ||||
4673 | I->setFastMathFlags(FMF); | ||||
4674 | } | ||||
4675 | |||||
4676 | break; | ||||
4677 | } | ||||
4678 | |||||
4679 | case bitc::FUNC_CODE_INST_LANDINGPAD: | ||||
4680 | case bitc::FUNC_CODE_INST_LANDINGPAD_OLD: { | ||||
4681 | // LANDINGPAD: [ty, val, val, num, (id0,val0 ...)?] | ||||
4682 | unsigned Idx = 0; | ||||
4683 | if (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD) { | ||||
4684 | if (Record.size() < 3) | ||||
4685 | return error("Invalid record"); | ||||
4686 | } else { | ||||
4687 | assert(BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD)((BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD) ? static_cast <void> (0) : __assert_fail ("BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4687, __PRETTY_FUNCTION__)); | ||||
4688 | if (Record.size() < 4) | ||||
4689 | return error("Invalid record"); | ||||
4690 | } | ||||
4691 | FullTy = getFullyStructuredTypeByID(Record[Idx++]); | ||||
4692 | Type *Ty = flattenPointerTypes(FullTy); | ||||
4693 | if (!Ty) | ||||
4694 | return error("Invalid record"); | ||||
4695 | if (BitCode == bitc::FUNC_CODE_INST_LANDINGPAD_OLD) { | ||||
4696 | Value *PersFn = nullptr; | ||||
4697 | if (getValueTypePair(Record, Idx, NextValueNo, PersFn)) | ||||
4698 | return error("Invalid record"); | ||||
4699 | |||||
4700 | if (!F->hasPersonalityFn()) | ||||
4701 | F->setPersonalityFn(cast<Constant>(PersFn)); | ||||
4702 | else if (F->getPersonalityFn() != cast<Constant>(PersFn)) | ||||
4703 | return error("Personality function mismatch"); | ||||
4704 | } | ||||
4705 | |||||
4706 | bool IsCleanup = !!Record[Idx++]; | ||||
4707 | unsigned NumClauses = Record[Idx++]; | ||||
4708 | LandingPadInst *LP = LandingPadInst::Create(Ty, NumClauses); | ||||
4709 | LP->setCleanup(IsCleanup); | ||||
4710 | for (unsigned J = 0; J != NumClauses; ++J) { | ||||
4711 | LandingPadInst::ClauseType CT = | ||||
4712 | LandingPadInst::ClauseType(Record[Idx++]); (void)CT; | ||||
4713 | Value *Val; | ||||
4714 | |||||
4715 | if (getValueTypePair(Record, Idx, NextValueNo, Val)) { | ||||
4716 | delete LP; | ||||
4717 | return error("Invalid record"); | ||||
4718 | } | ||||
4719 | |||||
4720 | assert((CT != LandingPadInst::Catch ||(((CT != LandingPadInst::Catch || !isa<ArrayType>(Val-> getType())) && "Catch clause has a invalid type!") ? static_cast <void> (0) : __assert_fail ("(CT != LandingPadInst::Catch || !isa<ArrayType>(Val->getType())) && \"Catch clause has a invalid type!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4722, __PRETTY_FUNCTION__)) | ||||
4721 | !isa<ArrayType>(Val->getType())) &&(((CT != LandingPadInst::Catch || !isa<ArrayType>(Val-> getType())) && "Catch clause has a invalid type!") ? static_cast <void> (0) : __assert_fail ("(CT != LandingPadInst::Catch || !isa<ArrayType>(Val->getType())) && \"Catch clause has a invalid type!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4722, __PRETTY_FUNCTION__)) | ||||
4722 | "Catch clause has a invalid type!")(((CT != LandingPadInst::Catch || !isa<ArrayType>(Val-> getType())) && "Catch clause has a invalid type!") ? static_cast <void> (0) : __assert_fail ("(CT != LandingPadInst::Catch || !isa<ArrayType>(Val->getType())) && \"Catch clause has a invalid type!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4722, __PRETTY_FUNCTION__)); | ||||
4723 | assert((CT != LandingPadInst::Filter ||(((CT != LandingPadInst::Filter || isa<ArrayType>(Val-> getType())) && "Filter clause has invalid type!") ? static_cast <void> (0) : __assert_fail ("(CT != LandingPadInst::Filter || isa<ArrayType>(Val->getType())) && \"Filter clause has invalid type!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4725, __PRETTY_FUNCTION__)) | ||||
4724 | isa<ArrayType>(Val->getType())) &&(((CT != LandingPadInst::Filter || isa<ArrayType>(Val-> getType())) && "Filter clause has invalid type!") ? static_cast <void> (0) : __assert_fail ("(CT != LandingPadInst::Filter || isa<ArrayType>(Val->getType())) && \"Filter clause has invalid type!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4725, __PRETTY_FUNCTION__)) | ||||
4725 | "Filter clause has invalid type!")(((CT != LandingPadInst::Filter || isa<ArrayType>(Val-> getType())) && "Filter clause has invalid type!") ? static_cast <void> (0) : __assert_fail ("(CT != LandingPadInst::Filter || isa<ArrayType>(Val->getType())) && \"Filter clause has invalid type!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 4725, __PRETTY_FUNCTION__)); | ||||
4726 | LP->addClause(cast<Constant>(Val)); | ||||
4727 | } | ||||
4728 | |||||
4729 | I = LP; | ||||
4730 | InstructionList.push_back(I); | ||||
4731 | break; | ||||
4732 | } | ||||
4733 | |||||
4734 | case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align] | ||||
4735 | if (Record.size() != 4) | ||||
4736 | return error("Invalid record"); | ||||
4737 | uint64_t AlignRecord = Record[3]; | ||||
4738 | const uint64_t InAllocaMask = uint64_t(1) << 5; | ||||
4739 | const uint64_t ExplicitTypeMask = uint64_t(1) << 6; | ||||
4740 | const uint64_t SwiftErrorMask = uint64_t(1) << 7; | ||||
4741 | const uint64_t FlagMask = InAllocaMask | ExplicitTypeMask | | ||||
4742 | SwiftErrorMask; | ||||
4743 | bool InAlloca = AlignRecord & InAllocaMask; | ||||
4744 | bool SwiftError = AlignRecord & SwiftErrorMask; | ||||
4745 | FullTy = getFullyStructuredTypeByID(Record[0]); | ||||
4746 | Type *Ty = flattenPointerTypes(FullTy); | ||||
4747 | if ((AlignRecord & ExplicitTypeMask) == 0) { | ||||
4748 | auto *PTy = dyn_cast_or_null<PointerType>(Ty); | ||||
4749 | if (!PTy) | ||||
4750 | return error("Old-style alloca with a non-pointer type"); | ||||
4751 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); | ||||
4752 | } | ||||
4753 | Type *OpTy = getTypeByID(Record[1]); | ||||
4754 | Value *Size = getFnValueByID(Record[2], OpTy); | ||||
4755 | MaybeAlign Align; | ||||
4756 | if (Error Err = parseAlignmentValue(AlignRecord & ~FlagMask, Align)) { | ||||
4757 | return Err; | ||||
4758 | } | ||||
4759 | if (!Ty || !Size) | ||||
4760 | return error("Invalid record"); | ||||
4761 | |||||
4762 | // FIXME: Make this an optional field. | ||||
4763 | const DataLayout &DL = TheModule->getDataLayout(); | ||||
4764 | unsigned AS = DL.getAllocaAddrSpace(); | ||||
4765 | |||||
4766 | AllocaInst *AI = new AllocaInst(Ty, AS, Size, Align); | ||||
4767 | AI->setUsedWithInAlloca(InAlloca); | ||||
4768 | AI->setSwiftError(SwiftError); | ||||
4769 | I = AI; | ||||
4770 | FullTy = PointerType::get(FullTy, AS); | ||||
4771 | InstructionList.push_back(I); | ||||
4772 | break; | ||||
4773 | } | ||||
4774 | case bitc::FUNC_CODE_INST_LOAD: { // LOAD: [opty, op, align, vol] | ||||
4775 | unsigned OpNum = 0; | ||||
4776 | Value *Op; | ||||
4777 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy) || | ||||
4778 | (OpNum + 2 != Record.size() && OpNum + 3 != Record.size())) | ||||
4779 | return error("Invalid record"); | ||||
4780 | |||||
4781 | if (!isa<PointerType>(Op->getType())) | ||||
4782 | return error("Load operand is not a pointer type"); | ||||
4783 | |||||
4784 | Type *Ty = nullptr; | ||||
4785 | if (OpNum + 3 == Record.size()) { | ||||
4786 | FullTy = getFullyStructuredTypeByID(Record[OpNum++]); | ||||
4787 | Ty = flattenPointerTypes(FullTy); | ||||
4788 | } else | ||||
4789 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); | ||||
4790 | |||||
4791 | if (Error Err = typeCheckLoadStoreInst(Ty, Op->getType())) | ||||
4792 | return Err; | ||||
4793 | |||||
4794 | MaybeAlign Align; | ||||
4795 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) | ||||
4796 | return Err; | ||||
4797 | I = new LoadInst(Ty, Op, "", Record[OpNum + 1], Align); | ||||
4798 | InstructionList.push_back(I); | ||||
4799 | break; | ||||
4800 | } | ||||
4801 | case bitc::FUNC_CODE_INST_LOADATOMIC: { | ||||
4802 | // LOADATOMIC: [opty, op, align, vol, ordering, ssid] | ||||
4803 | unsigned OpNum = 0; | ||||
4804 | Value *Op; | ||||
4805 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy) || | ||||
4806 | (OpNum + 4 != Record.size() && OpNum + 5 != Record.size())) | ||||
4807 | return error("Invalid record"); | ||||
4808 | |||||
4809 | if (!isa<PointerType>(Op->getType())) | ||||
4810 | return error("Load operand is not a pointer type"); | ||||
4811 | |||||
4812 | Type *Ty = nullptr; | ||||
4813 | if (OpNum + 5 == Record.size()) { | ||||
4814 | FullTy = getFullyStructuredTypeByID(Record[OpNum++]); | ||||
4815 | Ty = flattenPointerTypes(FullTy); | ||||
4816 | } else | ||||
4817 | std::tie(FullTy, Ty) = getPointerElementTypes(FullTy); | ||||
4818 | |||||
4819 | if (Error Err = typeCheckLoadStoreInst(Ty, Op->getType())) | ||||
4820 | return Err; | ||||
4821 | |||||
4822 | AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); | ||||
4823 | if (Ordering == AtomicOrdering::NotAtomic || | ||||
4824 | Ordering == AtomicOrdering::Release || | ||||
4825 | Ordering == AtomicOrdering::AcquireRelease) | ||||
4826 | return error("Invalid record"); | ||||
4827 | if (Ordering != AtomicOrdering::NotAtomic && Record[OpNum] == 0) | ||||
4828 | return error("Invalid record"); | ||||
4829 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); | ||||
4830 | |||||
4831 | MaybeAlign Align; | ||||
4832 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) | ||||
4833 | return Err; | ||||
4834 | I = new LoadInst(Ty, Op, "", Record[OpNum + 1], Align, Ordering, SSID); | ||||
4835 | InstructionList.push_back(I); | ||||
4836 | break; | ||||
4837 | } | ||||
4838 | case bitc::FUNC_CODE_INST_STORE: | ||||
4839 | case bitc::FUNC_CODE_INST_STORE_OLD: { // STORE2:[ptrty, ptr, val, align, vol] | ||||
4840 | unsigned OpNum = 0; | ||||
4841 | Value *Val, *Ptr; | ||||
4842 | Type *FullTy; | ||||
4843 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy) || | ||||
4844 | (BitCode == bitc::FUNC_CODE_INST_STORE | ||||
4845 | ? getValueTypePair(Record, OpNum, NextValueNo, Val) | ||||
4846 | : popValue(Record, OpNum, NextValueNo, | ||||
4847 | getPointerElementFlatType(FullTy), Val)) || | ||||
4848 | OpNum + 2 != Record.size()) | ||||
4849 | return error("Invalid record"); | ||||
4850 | |||||
4851 | if (Error Err = typeCheckLoadStoreInst(Val->getType(), Ptr->getType())) | ||||
4852 | return Err; | ||||
4853 | MaybeAlign Align; | ||||
4854 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) | ||||
4855 | return Err; | ||||
4856 | I = new StoreInst(Val, Ptr, Record[OpNum + 1], Align); | ||||
4857 | InstructionList.push_back(I); | ||||
4858 | break; | ||||
4859 | } | ||||
4860 | case bitc::FUNC_CODE_INST_STOREATOMIC: | ||||
4861 | case bitc::FUNC_CODE_INST_STOREATOMIC_OLD: { | ||||
4862 | // STOREATOMIC: [ptrty, ptr, val, align, vol, ordering, ssid] | ||||
4863 | unsigned OpNum = 0; | ||||
4864 | Value *Val, *Ptr; | ||||
4865 | Type *FullTy; | ||||
4866 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy) || | ||||
4867 | !isa<PointerType>(Ptr->getType()) || | ||||
4868 | (BitCode == bitc::FUNC_CODE_INST_STOREATOMIC | ||||
4869 | ? getValueTypePair(Record, OpNum, NextValueNo, Val) | ||||
4870 | : popValue(Record, OpNum, NextValueNo, | ||||
4871 | getPointerElementFlatType(FullTy), Val)) || | ||||
4872 | OpNum + 4 != Record.size()) | ||||
4873 | return error("Invalid record"); | ||||
4874 | |||||
4875 | if (Error Err = typeCheckLoadStoreInst(Val->getType(), Ptr->getType())) | ||||
4876 | return Err; | ||||
4877 | AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); | ||||
4878 | if (Ordering == AtomicOrdering::NotAtomic || | ||||
4879 | Ordering == AtomicOrdering::Acquire || | ||||
4880 | Ordering == AtomicOrdering::AcquireRelease) | ||||
4881 | return error("Invalid record"); | ||||
4882 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); | ||||
4883 | if (Ordering != AtomicOrdering::NotAtomic && Record[OpNum] == 0) | ||||
4884 | return error("Invalid record"); | ||||
4885 | |||||
4886 | MaybeAlign Align; | ||||
4887 | if (Error Err = parseAlignmentValue(Record[OpNum], Align)) | ||||
4888 | return Err; | ||||
4889 | I = new StoreInst(Val, Ptr, Record[OpNum + 1], Align, Ordering, SSID); | ||||
4890 | InstructionList.push_back(I); | ||||
4891 | break; | ||||
4892 | } | ||||
4893 | case bitc::FUNC_CODE_INST_CMPXCHG_OLD: | ||||
4894 | case bitc::FUNC_CODE_INST_CMPXCHG: { | ||||
4895 | // CMPXCHG:[ptrty, ptr, cmp, new, vol, successordering, ssid, | ||||
4896 | // failureordering?, isweak?] | ||||
4897 | unsigned OpNum = 0; | ||||
4898 | Value *Ptr, *Cmp, *New; | ||||
4899 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy)) | ||||
4900 | return error("Invalid record"); | ||||
4901 | |||||
4902 | if (!isa<PointerType>(Ptr->getType())) | ||||
4903 | return error("Cmpxchg operand is not a pointer type"); | ||||
4904 | |||||
4905 | if (BitCode
| ||||
4906 | if (getValueTypePair(Record, OpNum, NextValueNo, Cmp, &FullTy)) | ||||
4907 | return error("Invalid record"); | ||||
4908 | } else if (popValue(Record, OpNum, NextValueNo, | ||||
4909 | getPointerElementFlatType(FullTy), Cmp)) | ||||
4910 | return error("Invalid record"); | ||||
4911 | else | ||||
4912 | FullTy = cast<PointerType>(FullTy)->getElementType(); | ||||
4913 | |||||
4914 | if (popValue(Record, OpNum, NextValueNo, Cmp->getType(), New) || | ||||
4915 | Record.size() < OpNum + 3 || Record.size() > OpNum + 5) | ||||
4916 | return error("Invalid record"); | ||||
4917 | |||||
4918 | AtomicOrdering SuccessOrdering = getDecodedOrdering(Record[OpNum + 1]); | ||||
4919 | if (SuccessOrdering
| ||||
4920 | SuccessOrdering
| ||||
4921 | return error("Invalid record"); | ||||
4922 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 2]); | ||||
4923 | |||||
4924 | if (Error Err = typeCheckLoadStoreInst(Cmp->getType(), Ptr->getType())) | ||||
4925 | return Err; | ||||
4926 | AtomicOrdering FailureOrdering; | ||||
4927 | if (Record.size() < 7) | ||||
4928 | FailureOrdering = | ||||
4929 | AtomicCmpXchgInst::getStrongestFailureOrdering(SuccessOrdering); | ||||
4930 | else | ||||
4931 | FailureOrdering = getDecodedOrdering(Record[OpNum + 3]); | ||||
4932 | |||||
4933 | I = new AtomicCmpXchgInst(Ptr, Cmp, New, SuccessOrdering, FailureOrdering, | ||||
4934 | SSID); | ||||
4935 | FullTy = StructType::get(Context, {FullTy, Type::getInt1Ty(Context)}); | ||||
4936 | cast<AtomicCmpXchgInst>(I)->setVolatile(Record[OpNum]); | ||||
4937 | |||||
4938 | if (Record.size() < 8) { | ||||
4939 | // Before weak cmpxchgs existed, the instruction simply returned the | ||||
4940 | // value loaded from memory, so bitcode files from that era will be | ||||
4941 | // expecting the first component of a modern cmpxchg. | ||||
4942 | CurBB->getInstList().push_back(I); | ||||
| |||||
4943 | I = ExtractValueInst::Create(I, 0); | ||||
4944 | FullTy = cast<StructType>(FullTy)->getElementType(0); | ||||
4945 | } else { | ||||
4946 | cast<AtomicCmpXchgInst>(I)->setWeak(Record[OpNum+4]); | ||||
4947 | } | ||||
4948 | |||||
4949 | InstructionList.push_back(I); | ||||
4950 | break; | ||||
4951 | } | ||||
4952 | case bitc::FUNC_CODE_INST_ATOMICRMW: { | ||||
4953 | // ATOMICRMW:[ptrty, ptr, val, op, vol, ordering, ssid] | ||||
4954 | unsigned OpNum = 0; | ||||
4955 | Value *Ptr, *Val; | ||||
4956 | if (getValueTypePair(Record, OpNum, NextValueNo, Ptr, &FullTy) || | ||||
4957 | !isa<PointerType>(Ptr->getType()) || | ||||
4958 | popValue(Record, OpNum, NextValueNo, | ||||
4959 | getPointerElementFlatType(FullTy), Val) || | ||||
4960 | OpNum + 4 != Record.size()) | ||||
4961 | return error("Invalid record"); | ||||
4962 | AtomicRMWInst::BinOp Operation = getDecodedRMWOperation(Record[OpNum]); | ||||
4963 | if (Operation < AtomicRMWInst::FIRST_BINOP || | ||||
4964 | Operation > AtomicRMWInst::LAST_BINOP) | ||||
4965 | return error("Invalid record"); | ||||
4966 | AtomicOrdering Ordering = getDecodedOrdering(Record[OpNum + 2]); | ||||
4967 | if (Ordering == AtomicOrdering::NotAtomic || | ||||
4968 | Ordering == AtomicOrdering::Unordered) | ||||
4969 | return error("Invalid record"); | ||||
4970 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]); | ||||
4971 | I = new AtomicRMWInst(Operation, Ptr, Val, Ordering, SSID); | ||||
4972 | FullTy = getPointerElementFlatType(FullTy); | ||||
4973 | cast<AtomicRMWInst>(I)->setVolatile(Record[OpNum+1]); | ||||
4974 | InstructionList.push_back(I); | ||||
4975 | break; | ||||
4976 | } | ||||
4977 | case bitc::FUNC_CODE_INST_FENCE: { // FENCE:[ordering, ssid] | ||||
4978 | if (2 != Record.size()) | ||||
4979 | return error("Invalid record"); | ||||
4980 | AtomicOrdering Ordering = getDecodedOrdering(Record[0]); | ||||
4981 | if (Ordering == AtomicOrdering::NotAtomic || | ||||
4982 | Ordering == AtomicOrdering::Unordered || | ||||
4983 | Ordering == AtomicOrdering::Monotonic) | ||||
4984 | return error("Invalid record"); | ||||
4985 | SyncScope::ID SSID = getDecodedSyncScopeID(Record[1]); | ||||
4986 | I = new FenceInst(Context, Ordering, SSID); | ||||
4987 | InstructionList.push_back(I); | ||||
4988 | break; | ||||
4989 | } | ||||
4990 | case bitc::FUNC_CODE_INST_CALL: { | ||||
4991 | // CALL: [paramattrs, cc, fmf, fnty, fnid, arg0, arg1...] | ||||
4992 | if (Record.size() < 3) | ||||
4993 | return error("Invalid record"); | ||||
4994 | |||||
4995 | unsigned OpNum = 0; | ||||
4996 | AttributeList PAL = getAttributes(Record[OpNum++]); | ||||
4997 | unsigned CCInfo = Record[OpNum++]; | ||||
4998 | |||||
4999 | FastMathFlags FMF; | ||||
5000 | if ((CCInfo >> bitc::CALL_FMF) & 1) { | ||||
5001 | FMF = getDecodedFastMathFlags(Record[OpNum++]); | ||||
5002 | if (!FMF.any()) | ||||
5003 | return error("Fast math flags indicator set for call with no FMF"); | ||||
5004 | } | ||||
5005 | |||||
5006 | FunctionType *FTy = nullptr; | ||||
5007 | FunctionType *FullFTy = nullptr; | ||||
5008 | if ((CCInfo >> bitc::CALL_EXPLICIT_TYPE) & 1) { | ||||
5009 | FullFTy = | ||||
5010 | dyn_cast<FunctionType>(getFullyStructuredTypeByID(Record[OpNum++])); | ||||
5011 | if (!FullFTy) | ||||
5012 | return error("Explicit call type is not a function type"); | ||||
5013 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); | ||||
5014 | } | ||||
5015 | |||||
5016 | Value *Callee; | ||||
5017 | if (getValueTypePair(Record, OpNum, NextValueNo, Callee, &FullTy)) | ||||
5018 | return error("Invalid record"); | ||||
5019 | |||||
5020 | PointerType *OpTy = dyn_cast<PointerType>(Callee->getType()); | ||||
5021 | if (!OpTy) | ||||
5022 | return error("Callee is not a pointer type"); | ||||
5023 | if (!FTy) { | ||||
5024 | FullFTy = | ||||
5025 | dyn_cast<FunctionType>(cast<PointerType>(FullTy)->getElementType()); | ||||
5026 | if (!FullFTy) | ||||
5027 | return error("Callee is not of pointer to function type"); | ||||
5028 | FTy = cast<FunctionType>(flattenPointerTypes(FullFTy)); | ||||
5029 | } else if (getPointerElementFlatType(FullTy) != FTy) | ||||
5030 | return error("Explicit call type does not match pointee type of " | ||||
5031 | "callee operand"); | ||||
5032 | if (Record.size() < FTy->getNumParams() + OpNum) | ||||
5033 | return error("Insufficient operands to call"); | ||||
5034 | |||||
5035 | SmallVector<Value*, 16> Args; | ||||
5036 | SmallVector<Type*, 16> ArgsFullTys; | ||||
5037 | // Read the fixed params. | ||||
5038 | for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) { | ||||
5039 | if (FTy->getParamType(i)->isLabelTy()) | ||||
5040 | Args.push_back(getBasicBlock(Record[OpNum])); | ||||
5041 | else | ||||
5042 | Args.push_back(getValue(Record, OpNum, NextValueNo, | ||||
5043 | FTy->getParamType(i))); | ||||
5044 | ArgsFullTys.push_back(FullFTy->getParamType(i)); | ||||
5045 | if (!Args.back()) | ||||
5046 | return error("Invalid record"); | ||||
5047 | } | ||||
5048 | |||||
5049 | // Read type/value pairs for varargs params. | ||||
5050 | if (!FTy->isVarArg()) { | ||||
5051 | if (OpNum != Record.size()) | ||||
5052 | return error("Invalid record"); | ||||
5053 | } else { | ||||
5054 | while (OpNum != Record.size()) { | ||||
5055 | Value *Op; | ||||
5056 | Type *FullTy; | ||||
5057 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy)) | ||||
5058 | return error("Invalid record"); | ||||
5059 | Args.push_back(Op); | ||||
5060 | ArgsFullTys.push_back(FullTy); | ||||
5061 | } | ||||
5062 | } | ||||
5063 | |||||
5064 | I = CallInst::Create(FTy, Callee, Args, OperandBundles); | ||||
5065 | FullTy = FullFTy->getReturnType(); | ||||
5066 | OperandBundles.clear(); | ||||
5067 | InstructionList.push_back(I); | ||||
5068 | cast<CallInst>(I)->setCallingConv( | ||||
5069 | static_cast<CallingConv::ID>((0x7ff & CCInfo) >> bitc::CALL_CCONV)); | ||||
5070 | CallInst::TailCallKind TCK = CallInst::TCK_None; | ||||
5071 | if (CCInfo & 1 << bitc::CALL_TAIL) | ||||
5072 | TCK = CallInst::TCK_Tail; | ||||
5073 | if (CCInfo & (1 << bitc::CALL_MUSTTAIL)) | ||||
5074 | TCK = CallInst::TCK_MustTail; | ||||
5075 | if (CCInfo & (1 << bitc::CALL_NOTAIL)) | ||||
5076 | TCK = CallInst::TCK_NoTail; | ||||
5077 | cast<CallInst>(I)->setTailCallKind(TCK); | ||||
5078 | cast<CallInst>(I)->setAttributes(PAL); | ||||
5079 | propagateByValTypes(cast<CallBase>(I), ArgsFullTys); | ||||
5080 | if (FMF.any()) { | ||||
5081 | if (!isa<FPMathOperator>(I)) | ||||
5082 | return error("Fast-math-flags specified for call without " | ||||
5083 | "floating-point scalar or vector return type"); | ||||
5084 | I->setFastMathFlags(FMF); | ||||
5085 | } | ||||
5086 | break; | ||||
5087 | } | ||||
5088 | case bitc::FUNC_CODE_INST_VAARG: { // VAARG: [valistty, valist, instty] | ||||
5089 | if (Record.size() < 3) | ||||
5090 | return error("Invalid record"); | ||||
5091 | Type *OpTy = getTypeByID(Record[0]); | ||||
5092 | Value *Op = getValue(Record, 1, NextValueNo, OpTy); | ||||
5093 | FullTy = getFullyStructuredTypeByID(Record[2]); | ||||
5094 | Type *ResTy = flattenPointerTypes(FullTy); | ||||
5095 | if (!OpTy || !Op || !ResTy) | ||||
5096 | return error("Invalid record"); | ||||
5097 | I = new VAArgInst(Op, ResTy); | ||||
5098 | InstructionList.push_back(I); | ||||
5099 | break; | ||||
5100 | } | ||||
5101 | |||||
5102 | case bitc::FUNC_CODE_OPERAND_BUNDLE: { | ||||
5103 | // A call or an invoke can be optionally prefixed with some variable | ||||
5104 | // number of operand bundle blocks. These blocks are read into | ||||
5105 | // OperandBundles and consumed at the next call or invoke instruction. | ||||
5106 | |||||
5107 | if (Record.size() < 1 || Record[0] >= BundleTags.size()) | ||||
5108 | return error("Invalid record"); | ||||
5109 | |||||
5110 | std::vector<Value *> Inputs; | ||||
5111 | |||||
5112 | unsigned OpNum = 1; | ||||
5113 | while (OpNum != Record.size()) { | ||||
5114 | Value *Op; | ||||
5115 | if (getValueTypePair(Record, OpNum, NextValueNo, Op)) | ||||
5116 | return error("Invalid record"); | ||||
5117 | Inputs.push_back(Op); | ||||
5118 | } | ||||
5119 | |||||
5120 | OperandBundles.emplace_back(BundleTags[Record[0]], std::move(Inputs)); | ||||
5121 | continue; | ||||
5122 | } | ||||
5123 | |||||
5124 | case bitc::FUNC_CODE_INST_FREEZE: { // FREEZE: [opty,opval] | ||||
5125 | unsigned OpNum = 0; | ||||
5126 | Value *Op = nullptr; | ||||
5127 | if (getValueTypePair(Record, OpNum, NextValueNo, Op, &FullTy)) | ||||
5128 | return error("Invalid record"); | ||||
5129 | if (OpNum != Record.size()) | ||||
5130 | return error("Invalid record"); | ||||
5131 | |||||
5132 | I = new FreezeInst(Op); | ||||
5133 | InstructionList.push_back(I); | ||||
5134 | break; | ||||
5135 | } | ||||
5136 | } | ||||
5137 | |||||
5138 | // Add instruction to end of current BB. If there is no current BB, reject | ||||
5139 | // this file. | ||||
5140 | if (!CurBB) { | ||||
5141 | I->deleteValue(); | ||||
5142 | return error("Invalid instruction with no BB"); | ||||
5143 | } | ||||
5144 | if (!OperandBundles.empty()) { | ||||
5145 | I->deleteValue(); | ||||
5146 | return error("Operand bundles found with no consumer"); | ||||
5147 | } | ||||
5148 | CurBB->getInstList().push_back(I); | ||||
5149 | |||||
5150 | // If this was a terminator instruction, move to the next block. | ||||
5151 | if (I->isTerminator()) { | ||||
5152 | ++CurBBNo; | ||||
5153 | CurBB = CurBBNo < FunctionBBs.size() ? FunctionBBs[CurBBNo] : nullptr; | ||||
5154 | } | ||||
5155 | |||||
5156 | // Non-void values get registered in the value table for future use. | ||||
5157 | if (!I->getType()->isVoidTy()) { | ||||
5158 | if (!FullTy) { | ||||
5159 | FullTy = I->getType(); | ||||
5160 | assert(((!FullTy->isPointerTy() && !isa<StructType> (FullTy) && !isa<ArrayType>(FullTy) && ( !isa<VectorType>(FullTy) || FullTy->getVectorElementType ()->isFloatingPointTy() || FullTy->getVectorElementType ()->isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? static_cast<void> (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || FullTy->getVectorElementType()->isFloatingPointTy() || FullTy->getVectorElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5167, __PRETTY_FUNCTION__)) | ||||
5161 | !FullTy->isPointerTy() && !isa<StructType>(FullTy) &&((!FullTy->isPointerTy() && !isa<StructType> (FullTy) && !isa<ArrayType>(FullTy) && ( !isa<VectorType>(FullTy) || FullTy->getVectorElementType ()->isFloatingPointTy() || FullTy->getVectorElementType ()->isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? static_cast<void> (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || FullTy->getVectorElementType()->isFloatingPointTy() || FullTy->getVectorElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5167, __PRETTY_FUNCTION__)) | ||||
5162 | !isa<ArrayType>(FullTy) &&((!FullTy->isPointerTy() && !isa<StructType> (FullTy) && !isa<ArrayType>(FullTy) && ( !isa<VectorType>(FullTy) || FullTy->getVectorElementType ()->isFloatingPointTy() || FullTy->getVectorElementType ()->isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? static_cast<void> (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || FullTy->getVectorElementType()->isFloatingPointTy() || FullTy->getVectorElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5167, __PRETTY_FUNCTION__)) | ||||
5163 | (!isa<VectorType>(FullTy) ||((!FullTy->isPointerTy() && !isa<StructType> (FullTy) && !isa<ArrayType>(FullTy) && ( !isa<VectorType>(FullTy) || FullTy->getVectorElementType ()->isFloatingPointTy() || FullTy->getVectorElementType ()->isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? static_cast<void> (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || FullTy->getVectorElementType()->isFloatingPointTy() || FullTy->getVectorElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5167, __PRETTY_FUNCTION__)) | ||||
5164 | FullTy->getVectorElementType()->isFloatingPointTy() ||((!FullTy->isPointerTy() && !isa<StructType> (FullTy) && !isa<ArrayType>(FullTy) && ( !isa<VectorType>(FullTy) || FullTy->getVectorElementType ()->isFloatingPointTy() || FullTy->getVectorElementType ()->isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? static_cast<void> (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || FullTy->getVectorElementType()->isFloatingPointTy() || FullTy->getVectorElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5167, __PRETTY_FUNCTION__)) | ||||
5165 | FullTy->getVectorElementType()->isIntegerTy()) &&((!FullTy->isPointerTy() && !isa<StructType> (FullTy) && !isa<ArrayType>(FullTy) && ( !isa<VectorType>(FullTy) || FullTy->getVectorElementType ()->isFloatingPointTy() || FullTy->getVectorElementType ()->isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? static_cast<void> (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || FullTy->getVectorElementType()->isFloatingPointTy() || FullTy->getVectorElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5167, __PRETTY_FUNCTION__)) | ||||
5166 | "Structured types must be assigned with corresponding non-opaque "((!FullTy->isPointerTy() && !isa<StructType> (FullTy) && !isa<ArrayType>(FullTy) && ( !isa<VectorType>(FullTy) || FullTy->getVectorElementType ()->isFloatingPointTy() || FullTy->getVectorElementType ()->isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? static_cast<void> (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || FullTy->getVectorElementType()->isFloatingPointTy() || FullTy->getVectorElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5167, __PRETTY_FUNCTION__)) | ||||
5167 | "pointer type")((!FullTy->isPointerTy() && !isa<StructType> (FullTy) && !isa<ArrayType>(FullTy) && ( !isa<VectorType>(FullTy) || FullTy->getVectorElementType ()->isFloatingPointTy() || FullTy->getVectorElementType ()->isIntegerTy()) && "Structured types must be assigned with corresponding non-opaque " "pointer type") ? static_cast<void> (0) : __assert_fail ("!FullTy->isPointerTy() && !isa<StructType>(FullTy) && !isa<ArrayType>(FullTy) && (!isa<VectorType>(FullTy) || FullTy->getVectorElementType()->isFloatingPointTy() || FullTy->getVectorElementType()->isIntegerTy()) && \"Structured types must be assigned with corresponding non-opaque \" \"pointer type\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5167, __PRETTY_FUNCTION__)); | ||||
5168 | } | ||||
5169 | |||||
5170 | assert(I->getType() == flattenPointerTypes(FullTy) &&((I->getType() == flattenPointerTypes(FullTy) && "Incorrect fully structured type provided for Instruction" ) ? static_cast<void> (0) : __assert_fail ("I->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for Instruction\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5171, __PRETTY_FUNCTION__)) | ||||
5171 | "Incorrect fully structured type provided for Instruction")((I->getType() == flattenPointerTypes(FullTy) && "Incorrect fully structured type provided for Instruction" ) ? static_cast<void> (0) : __assert_fail ("I->getType() == flattenPointerTypes(FullTy) && \"Incorrect fully structured type provided for Instruction\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5171, __PRETTY_FUNCTION__)); | ||||
5172 | ValueList.assignValue(I, NextValueNo++, FullTy); | ||||
5173 | } | ||||
5174 | } | ||||
5175 | |||||
5176 | OutOfRecordLoop: | ||||
5177 | |||||
5178 | if (!OperandBundles.empty()) | ||||
5179 | return error("Operand bundles found with no consumer"); | ||||
5180 | |||||
5181 | // Check the function list for unresolved values. | ||||
5182 | if (Argument *A = dyn_cast<Argument>(ValueList.back())) { | ||||
5183 | if (!A->getParent()) { | ||||
5184 | // We found at least one unresolved value. Nuke them all to avoid leaks. | ||||
5185 | for (unsigned i = ModuleValueListSize, e = ValueList.size(); i != e; ++i){ | ||||
5186 | if ((A = dyn_cast_or_null<Argument>(ValueList[i])) && !A->getParent()) { | ||||
5187 | A->replaceAllUsesWith(UndefValue::get(A->getType())); | ||||
5188 | delete A; | ||||
5189 | } | ||||
5190 | } | ||||
5191 | return error("Never resolved value found in function"); | ||||
5192 | } | ||||
5193 | } | ||||
5194 | |||||
5195 | // Unexpected unresolved metadata about to be dropped. | ||||
5196 | if (MDLoader->hasFwdRefs()) | ||||
5197 | return error("Invalid function metadata: outgoing forward refs"); | ||||
5198 | |||||
5199 | // Trim the value list down to the size it was before we parsed this function. | ||||
5200 | ValueList.shrinkTo(ModuleValueListSize); | ||||
5201 | MDLoader->shrinkTo(ModuleMDLoaderSize); | ||||
5202 | std::vector<BasicBlock*>().swap(FunctionBBs); | ||||
5203 | return Error::success(); | ||||
5204 | } | ||||
5205 | |||||
5206 | /// Find the function body in the bitcode stream | ||||
5207 | Error BitcodeReader::findFunctionInStream( | ||||
5208 | Function *F, | ||||
5209 | DenseMap<Function *, uint64_t>::iterator DeferredFunctionInfoIterator) { | ||||
5210 | while (DeferredFunctionInfoIterator->second == 0) { | ||||
5211 | // This is the fallback handling for the old format bitcode that | ||||
5212 | // didn't contain the function index in the VST, or when we have | ||||
5213 | // an anonymous function which would not have a VST entry. | ||||
5214 | // Assert that we have one of those two cases. | ||||
5215 | assert(VSTOffset == 0 || !F->hasName())((VSTOffset == 0 || !F->hasName()) ? static_cast<void> (0) : __assert_fail ("VSTOffset == 0 || !F->hasName()", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5215, __PRETTY_FUNCTION__)); | ||||
5216 | // Parse the next body in the stream and set its position in the | ||||
5217 | // DeferredFunctionInfo map. | ||||
5218 | if (Error Err = rememberAndSkipFunctionBodies()) | ||||
5219 | return Err; | ||||
5220 | } | ||||
5221 | return Error::success(); | ||||
5222 | } | ||||
5223 | |||||
5224 | SyncScope::ID BitcodeReader::getDecodedSyncScopeID(unsigned Val) { | ||||
5225 | if (Val == SyncScope::SingleThread || Val == SyncScope::System) | ||||
5226 | return SyncScope::ID(Val); | ||||
5227 | if (Val >= SSIDs.size()) | ||||
5228 | return SyncScope::System; // Map unknown synchronization scopes to system. | ||||
5229 | return SSIDs[Val]; | ||||
5230 | } | ||||
5231 | |||||
5232 | //===----------------------------------------------------------------------===// | ||||
5233 | // GVMaterializer implementation | ||||
5234 | //===----------------------------------------------------------------------===// | ||||
5235 | |||||
5236 | Error BitcodeReader::materialize(GlobalValue *GV) { | ||||
5237 | Function *F = dyn_cast<Function>(GV); | ||||
5238 | // If it's not a function or is already material, ignore the request. | ||||
5239 | if (!F || !F->isMaterializable()) | ||||
5240 | return Error::success(); | ||||
5241 | |||||
5242 | DenseMap<Function*, uint64_t>::iterator DFII = DeferredFunctionInfo.find(F); | ||||
5243 | assert(DFII != DeferredFunctionInfo.end() && "Deferred function not found!")((DFII != DeferredFunctionInfo.end() && "Deferred function not found!" ) ? static_cast<void> (0) : __assert_fail ("DFII != DeferredFunctionInfo.end() && \"Deferred function not found!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5243, __PRETTY_FUNCTION__)); | ||||
5244 | // If its position is recorded as 0, its body is somewhere in the stream | ||||
5245 | // but we haven't seen it yet. | ||||
5246 | if (DFII->second == 0) | ||||
5247 | if (Error Err = findFunctionInStream(F, DFII)) | ||||
5248 | return Err; | ||||
5249 | |||||
5250 | // Materialize metadata before parsing any function bodies. | ||||
5251 | if (Error Err = materializeMetadata()) | ||||
5252 | return Err; | ||||
5253 | |||||
5254 | // Move the bit stream to the saved position of the deferred function body. | ||||
5255 | if (Error JumpFailed = Stream.JumpToBit(DFII->second)) | ||||
5256 | return JumpFailed; | ||||
5257 | if (Error Err = parseFunctionBody(F)) | ||||
5258 | return Err; | ||||
5259 | F->setIsMaterializable(false); | ||||
5260 | |||||
5261 | if (StripDebugInfo) | ||||
5262 | stripDebugInfo(*F); | ||||
5263 | |||||
5264 | // Upgrade any old intrinsic calls in the function. | ||||
5265 | for (auto &I : UpgradedIntrinsics) { | ||||
5266 | for (auto UI = I.first->materialized_user_begin(), UE = I.first->user_end(); | ||||
5267 | UI != UE;) { | ||||
5268 | User *U = *UI; | ||||
5269 | ++UI; | ||||
5270 | if (CallInst *CI = dyn_cast<CallInst>(U)) | ||||
5271 | UpgradeIntrinsicCall(CI, I.second); | ||||
5272 | } | ||||
5273 | } | ||||
5274 | |||||
5275 | // Update calls to the remangled intrinsics | ||||
5276 | for (auto &I : RemangledIntrinsics) | ||||
5277 | for (auto UI = I.first->materialized_user_begin(), UE = I.first->user_end(); | ||||
5278 | UI != UE;) | ||||
5279 | // Don't expect any other users than call sites | ||||
5280 | CallSite(*UI++).setCalledFunction(I.second); | ||||
5281 | |||||
5282 | // Finish fn->subprogram upgrade for materialized functions. | ||||
5283 | if (DISubprogram *SP = MDLoader->lookupSubprogramForFunction(F)) | ||||
5284 | F->setSubprogram(SP); | ||||
5285 | |||||
5286 | // Check if the TBAA Metadata are valid, otherwise we will need to strip them. | ||||
5287 | if (!MDLoader->isStrippingTBAA()) { | ||||
5288 | for (auto &I : instructions(F)) { | ||||
5289 | MDNode *TBAA = I.getMetadata(LLVMContext::MD_tbaa); | ||||
5290 | if (!TBAA || TBAAVerifyHelper.visitTBAAMetadata(I, TBAA)) | ||||
5291 | continue; | ||||
5292 | MDLoader->setStripTBAA(true); | ||||
5293 | stripTBAA(F->getParent()); | ||||
5294 | } | ||||
5295 | } | ||||
5296 | |||||
5297 | // Bring in any functions that this function forward-referenced via | ||||
5298 | // blockaddresses. | ||||
5299 | return materializeForwardReferencedFunctions(); | ||||
5300 | } | ||||
5301 | |||||
5302 | Error BitcodeReader::materializeModule() { | ||||
5303 | if (Error Err = materializeMetadata()) | ||||
5304 | return Err; | ||||
5305 | |||||
5306 | // Promise to materialize all forward references. | ||||
5307 | WillMaterializeAllForwardRefs = true; | ||||
5308 | |||||
5309 | // Iterate over the module, deserializing any functions that are still on | ||||
5310 | // disk. | ||||
5311 | for (Function &F : *TheModule) { | ||||
5312 | if (Error Err = materialize(&F)) | ||||
5313 | return Err; | ||||
5314 | } | ||||
5315 | // At this point, if there are any function bodies, parse the rest of | ||||
5316 | // the bits in the module past the last function block we have recorded | ||||
5317 | // through either lazy scanning or the VST. | ||||
5318 | if (LastFunctionBlockBit || NextUnreadBit) | ||||
5319 | if (Error Err = parseModule(LastFunctionBlockBit > NextUnreadBit | ||||
5320 | ? LastFunctionBlockBit | ||||
5321 | : NextUnreadBit)) | ||||
5322 | return Err; | ||||
5323 | |||||
5324 | // Check that all block address forward references got resolved (as we | ||||
5325 | // promised above). | ||||
5326 | if (!BasicBlockFwdRefs.empty()) | ||||
5327 | return error("Never resolved function from blockaddress"); | ||||
5328 | |||||
5329 | // Upgrade any intrinsic calls that slipped through (should not happen!) and | ||||
5330 | // delete the old functions to clean up. We can't do this unless the entire | ||||
5331 | // module is materialized because there could always be another function body | ||||
5332 | // with calls to the old function. | ||||
5333 | for (auto &I : UpgradedIntrinsics) { | ||||
5334 | for (auto *U : I.first->users()) { | ||||
5335 | if (CallInst *CI = dyn_cast<CallInst>(U)) | ||||
5336 | UpgradeIntrinsicCall(CI, I.second); | ||||
5337 | } | ||||
5338 | if (!I.first->use_empty()) | ||||
5339 | I.first->replaceAllUsesWith(I.second); | ||||
5340 | I.first->eraseFromParent(); | ||||
5341 | } | ||||
5342 | UpgradedIntrinsics.clear(); | ||||
5343 | // Do the same for remangled intrinsics | ||||
5344 | for (auto &I : RemangledIntrinsics) { | ||||
5345 | I.first->replaceAllUsesWith(I.second); | ||||
5346 | I.first->eraseFromParent(); | ||||
5347 | } | ||||
5348 | RemangledIntrinsics.clear(); | ||||
5349 | |||||
5350 | UpgradeDebugInfo(*TheModule); | ||||
5351 | |||||
5352 | UpgradeModuleFlags(*TheModule); | ||||
5353 | |||||
5354 | UpgradeARCRuntime(*TheModule); | ||||
5355 | |||||
5356 | return Error::success(); | ||||
5357 | } | ||||
5358 | |||||
5359 | std::vector<StructType *> BitcodeReader::getIdentifiedStructTypes() const { | ||||
5360 | return IdentifiedStructTypes; | ||||
5361 | } | ||||
5362 | |||||
5363 | ModuleSummaryIndexBitcodeReader::ModuleSummaryIndexBitcodeReader( | ||||
5364 | BitstreamCursor Cursor, StringRef Strtab, ModuleSummaryIndex &TheIndex, | ||||
5365 | StringRef ModulePath, unsigned ModuleId) | ||||
5366 | : BitcodeReaderBase(std::move(Cursor), Strtab), TheIndex(TheIndex), | ||||
5367 | ModulePath(ModulePath), ModuleId(ModuleId) {} | ||||
5368 | |||||
5369 | void ModuleSummaryIndexBitcodeReader::addThisModule() { | ||||
5370 | TheIndex.addModule(ModulePath, ModuleId); | ||||
5371 | } | ||||
5372 | |||||
5373 | ModuleSummaryIndex::ModuleInfo * | ||||
5374 | ModuleSummaryIndexBitcodeReader::getThisModule() { | ||||
5375 | return TheIndex.getModule(ModulePath); | ||||
5376 | } | ||||
5377 | |||||
5378 | std::pair<ValueInfo, GlobalValue::GUID> | ||||
5379 | ModuleSummaryIndexBitcodeReader::getValueInfoFromValueId(unsigned ValueId) { | ||||
5380 | auto VGI = ValueIdToValueInfoMap[ValueId]; | ||||
5381 | assert(VGI.first)((VGI.first) ? static_cast<void> (0) : __assert_fail ("VGI.first" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5381, __PRETTY_FUNCTION__)); | ||||
5382 | return VGI; | ||||
5383 | } | ||||
5384 | |||||
5385 | void ModuleSummaryIndexBitcodeReader::setValueGUID( | ||||
5386 | uint64_t ValueID, StringRef ValueName, GlobalValue::LinkageTypes Linkage, | ||||
5387 | StringRef SourceFileName) { | ||||
5388 | std::string GlobalId = | ||||
5389 | GlobalValue::getGlobalIdentifier(ValueName, Linkage, SourceFileName); | ||||
5390 | auto ValueGUID = GlobalValue::getGUID(GlobalId); | ||||
5391 | auto OriginalNameID = ValueGUID; | ||||
5392 | if (GlobalValue::isLocalLinkage(Linkage)) | ||||
5393 | OriginalNameID = GlobalValue::getGUID(ValueName); | ||||
5394 | if (PrintSummaryGUIDs) | ||||
5395 | dbgs() << "GUID " << ValueGUID << "(" << OriginalNameID << ") is " | ||||
5396 | << ValueName << "\n"; | ||||
5397 | |||||
5398 | // UseStrtab is false for legacy summary formats and value names are | ||||
5399 | // created on stack. In that case we save the name in a string saver in | ||||
5400 | // the index so that the value name can be recorded. | ||||
5401 | ValueIdToValueInfoMap[ValueID] = std::make_pair( | ||||
5402 | TheIndex.getOrInsertValueInfo( | ||||
5403 | ValueGUID, | ||||
5404 | UseStrtab ? ValueName : TheIndex.saveString(ValueName)), | ||||
5405 | OriginalNameID); | ||||
5406 | } | ||||
5407 | |||||
5408 | // Specialized value symbol table parser used when reading module index | ||||
5409 | // blocks where we don't actually create global values. The parsed information | ||||
5410 | // is saved in the bitcode reader for use when later parsing summaries. | ||||
5411 | Error ModuleSummaryIndexBitcodeReader::parseValueSymbolTable( | ||||
5412 | uint64_t Offset, | ||||
5413 | DenseMap<unsigned, GlobalValue::LinkageTypes> &ValueIdToLinkageMap) { | ||||
5414 | // With a strtab the VST is not required to parse the summary. | ||||
5415 | if (UseStrtab) | ||||
5416 | return Error::success(); | ||||
5417 | |||||
5418 | assert(Offset > 0 && "Expected non-zero VST offset")((Offset > 0 && "Expected non-zero VST offset") ? static_cast <void> (0) : __assert_fail ("Offset > 0 && \"Expected non-zero VST offset\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5418, __PRETTY_FUNCTION__)); | ||||
5419 | Expected<uint64_t> MaybeCurrentBit = jumpToValueSymbolTable(Offset, Stream); | ||||
5420 | if (!MaybeCurrentBit) | ||||
5421 | return MaybeCurrentBit.takeError(); | ||||
5422 | uint64_t CurrentBit = MaybeCurrentBit.get(); | ||||
5423 | |||||
5424 | if (Error Err = Stream.EnterSubBlock(bitc::VALUE_SYMTAB_BLOCK_ID)) | ||||
5425 | return Err; | ||||
5426 | |||||
5427 | SmallVector<uint64_t, 64> Record; | ||||
5428 | |||||
5429 | // Read all the records for this value table. | ||||
5430 | SmallString<128> ValueName; | ||||
5431 | |||||
5432 | while (true) { | ||||
5433 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
5434 | if (!MaybeEntry) | ||||
5435 | return MaybeEntry.takeError(); | ||||
5436 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
5437 | |||||
5438 | switch (Entry.Kind) { | ||||
5439 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
5440 | case BitstreamEntry::Error: | ||||
5441 | return error("Malformed block"); | ||||
5442 | case BitstreamEntry::EndBlock: | ||||
5443 | // Done parsing VST, jump back to wherever we came from. | ||||
5444 | if (Error JumpFailed = Stream.JumpToBit(CurrentBit)) | ||||
5445 | return JumpFailed; | ||||
5446 | return Error::success(); | ||||
5447 | case BitstreamEntry::Record: | ||||
5448 | // The interesting case. | ||||
5449 | break; | ||||
5450 | } | ||||
5451 | |||||
5452 | // Read a record. | ||||
5453 | Record.clear(); | ||||
5454 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
5455 | if (!MaybeRecord) | ||||
5456 | return MaybeRecord.takeError(); | ||||
5457 | switch (MaybeRecord.get()) { | ||||
5458 | default: // Default behavior: ignore (e.g. VST_CODE_BBENTRY records). | ||||
5459 | break; | ||||
5460 | case bitc::VST_CODE_ENTRY: { // VST_CODE_ENTRY: [valueid, namechar x N] | ||||
5461 | if (convertToString(Record, 1, ValueName)) | ||||
5462 | return error("Invalid record"); | ||||
5463 | unsigned ValueID = Record[0]; | ||||
5464 | assert(!SourceFileName.empty())((!SourceFileName.empty()) ? static_cast<void> (0) : __assert_fail ("!SourceFileName.empty()", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5464, __PRETTY_FUNCTION__)); | ||||
5465 | auto VLI = ValueIdToLinkageMap.find(ValueID); | ||||
5466 | assert(VLI != ValueIdToLinkageMap.end() &&((VLI != ValueIdToLinkageMap.end() && "No linkage found for VST entry?" ) ? static_cast<void> (0) : __assert_fail ("VLI != ValueIdToLinkageMap.end() && \"No linkage found for VST entry?\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5467, __PRETTY_FUNCTION__)) | ||||
5467 | "No linkage found for VST entry?")((VLI != ValueIdToLinkageMap.end() && "No linkage found for VST entry?" ) ? static_cast<void> (0) : __assert_fail ("VLI != ValueIdToLinkageMap.end() && \"No linkage found for VST entry?\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5467, __PRETTY_FUNCTION__)); | ||||
5468 | auto Linkage = VLI->second; | ||||
5469 | setValueGUID(ValueID, ValueName, Linkage, SourceFileName); | ||||
5470 | ValueName.clear(); | ||||
5471 | break; | ||||
5472 | } | ||||
5473 | case bitc::VST_CODE_FNENTRY: { | ||||
5474 | // VST_CODE_FNENTRY: [valueid, offset, namechar x N] | ||||
5475 | if (convertToString(Record, 2, ValueName)) | ||||
5476 | return error("Invalid record"); | ||||
5477 | unsigned ValueID = Record[0]; | ||||
5478 | assert(!SourceFileName.empty())((!SourceFileName.empty()) ? static_cast<void> (0) : __assert_fail ("!SourceFileName.empty()", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5478, __PRETTY_FUNCTION__)); | ||||
5479 | auto VLI = ValueIdToLinkageMap.find(ValueID); | ||||
5480 | assert(VLI != ValueIdToLinkageMap.end() &&((VLI != ValueIdToLinkageMap.end() && "No linkage found for VST entry?" ) ? static_cast<void> (0) : __assert_fail ("VLI != ValueIdToLinkageMap.end() && \"No linkage found for VST entry?\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5481, __PRETTY_FUNCTION__)) | ||||
5481 | "No linkage found for VST entry?")((VLI != ValueIdToLinkageMap.end() && "No linkage found for VST entry?" ) ? static_cast<void> (0) : __assert_fail ("VLI != ValueIdToLinkageMap.end() && \"No linkage found for VST entry?\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5481, __PRETTY_FUNCTION__)); | ||||
5482 | auto Linkage = VLI->second; | ||||
5483 | setValueGUID(ValueID, ValueName, Linkage, SourceFileName); | ||||
5484 | ValueName.clear(); | ||||
5485 | break; | ||||
5486 | } | ||||
5487 | case bitc::VST_CODE_COMBINED_ENTRY: { | ||||
5488 | // VST_CODE_COMBINED_ENTRY: [valueid, refguid] | ||||
5489 | unsigned ValueID = Record[0]; | ||||
5490 | GlobalValue::GUID RefGUID = Record[1]; | ||||
5491 | // The "original name", which is the second value of the pair will be | ||||
5492 | // overriden later by a FS_COMBINED_ORIGINAL_NAME in the combined index. | ||||
5493 | ValueIdToValueInfoMap[ValueID] = | ||||
5494 | std::make_pair(TheIndex.getOrInsertValueInfo(RefGUID), RefGUID); | ||||
5495 | break; | ||||
5496 | } | ||||
5497 | } | ||||
5498 | } | ||||
5499 | } | ||||
5500 | |||||
5501 | // Parse just the blocks needed for building the index out of the module. | ||||
5502 | // At the end of this routine the module Index is populated with a map | ||||
5503 | // from global value id to GlobalValueSummary objects. | ||||
5504 | Error ModuleSummaryIndexBitcodeReader::parseModule() { | ||||
5505 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | ||||
5506 | return Err; | ||||
5507 | |||||
5508 | SmallVector<uint64_t, 64> Record; | ||||
5509 | DenseMap<unsigned, GlobalValue::LinkageTypes> ValueIdToLinkageMap; | ||||
5510 | unsigned ValueId = 0; | ||||
5511 | |||||
5512 | // Read the index for this module. | ||||
5513 | while (true) { | ||||
5514 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
5515 | if (!MaybeEntry) | ||||
5516 | return MaybeEntry.takeError(); | ||||
5517 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | ||||
5518 | |||||
5519 | switch (Entry.Kind) { | ||||
5520 | case BitstreamEntry::Error: | ||||
5521 | return error("Malformed block"); | ||||
5522 | case BitstreamEntry::EndBlock: | ||||
5523 | return Error::success(); | ||||
5524 | |||||
5525 | case BitstreamEntry::SubBlock: | ||||
5526 | switch (Entry.ID) { | ||||
5527 | default: // Skip unknown content. | ||||
5528 | if (Error Err = Stream.SkipBlock()) | ||||
5529 | return Err; | ||||
5530 | break; | ||||
5531 | case bitc::BLOCKINFO_BLOCK_ID: | ||||
5532 | // Need to parse these to get abbrev ids (e.g. for VST) | ||||
5533 | if (readBlockInfo()) | ||||
5534 | return error("Malformed block"); | ||||
5535 | break; | ||||
5536 | case bitc::VALUE_SYMTAB_BLOCK_ID: | ||||
5537 | // Should have been parsed earlier via VSTOffset, unless there | ||||
5538 | // is no summary section. | ||||
5539 | assert(((SeenValueSymbolTable && VSTOffset > 0) ||((((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary ) && "Expected early VST parse via VSTOffset record") ? static_cast<void> (0) : __assert_fail ("((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && \"Expected early VST parse via VSTOffset record\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5541, __PRETTY_FUNCTION__)) | ||||
5540 | !SeenGlobalValSummary) &&((((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary ) && "Expected early VST parse via VSTOffset record") ? static_cast<void> (0) : __assert_fail ("((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && \"Expected early VST parse via VSTOffset record\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5541, __PRETTY_FUNCTION__)) | ||||
5541 | "Expected early VST parse via VSTOffset record")((((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary ) && "Expected early VST parse via VSTOffset record") ? static_cast<void> (0) : __assert_fail ("((SeenValueSymbolTable && VSTOffset > 0) || !SeenGlobalValSummary) && \"Expected early VST parse via VSTOffset record\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5541, __PRETTY_FUNCTION__)); | ||||
5542 | if (Error Err = Stream.SkipBlock()) | ||||
5543 | return Err; | ||||
5544 | break; | ||||
5545 | case bitc::GLOBALVAL_SUMMARY_BLOCK_ID: | ||||
5546 | case bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID: | ||||
5547 | // Add the module if it is a per-module index (has a source file name). | ||||
5548 | if (!SourceFileName.empty()) | ||||
5549 | addThisModule(); | ||||
5550 | assert(!SeenValueSymbolTable &&((!SeenValueSymbolTable && "Already read VST when parsing summary block?" ) ? static_cast<void> (0) : __assert_fail ("!SeenValueSymbolTable && \"Already read VST when parsing summary block?\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5551, __PRETTY_FUNCTION__)) | ||||
5551 | "Already read VST when parsing summary block?")((!SeenValueSymbolTable && "Already read VST when parsing summary block?" ) ? static_cast<void> (0) : __assert_fail ("!SeenValueSymbolTable && \"Already read VST when parsing summary block?\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5551, __PRETTY_FUNCTION__)); | ||||
5552 | // We might not have a VST if there were no values in the | ||||
5553 | // summary. An empty summary block generated when we are | ||||
5554 | // performing ThinLTO compiles so we don't later invoke | ||||
5555 | // the regular LTO process on them. | ||||
5556 | if (VSTOffset > 0) { | ||||
5557 | if (Error Err = parseValueSymbolTable(VSTOffset, ValueIdToLinkageMap)) | ||||
5558 | return Err; | ||||
5559 | SeenValueSymbolTable = true; | ||||
5560 | } | ||||
5561 | SeenGlobalValSummary = true; | ||||
5562 | if (Error Err = parseEntireSummary(Entry.ID)) | ||||
5563 | return Err; | ||||
5564 | break; | ||||
5565 | case bitc::MODULE_STRTAB_BLOCK_ID: | ||||
5566 | if (Error Err = parseModuleStringTable()) | ||||
5567 | return Err; | ||||
5568 | break; | ||||
5569 | } | ||||
5570 | continue; | ||||
5571 | |||||
5572 | case BitstreamEntry::Record: { | ||||
5573 | Record.clear(); | ||||
5574 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | ||||
5575 | if (!MaybeBitCode) | ||||
5576 | return MaybeBitCode.takeError(); | ||||
5577 | switch (MaybeBitCode.get()) { | ||||
5578 | default: | ||||
5579 | break; // Default behavior, ignore unknown content. | ||||
5580 | case bitc::MODULE_CODE_VERSION: { | ||||
5581 | if (Error Err = parseVersionRecord(Record).takeError()) | ||||
5582 | return Err; | ||||
5583 | break; | ||||
5584 | } | ||||
5585 | /// MODULE_CODE_SOURCE_FILENAME: [namechar x N] | ||||
5586 | case bitc::MODULE_CODE_SOURCE_FILENAME: { | ||||
5587 | SmallString<128> ValueName; | ||||
5588 | if (convertToString(Record, 0, ValueName)) | ||||
5589 | return error("Invalid record"); | ||||
5590 | SourceFileName = ValueName.c_str(); | ||||
5591 | break; | ||||
5592 | } | ||||
5593 | /// MODULE_CODE_HASH: [5*i32] | ||||
5594 | case bitc::MODULE_CODE_HASH: { | ||||
5595 | if (Record.size() != 5) | ||||
5596 | return error("Invalid hash length " + Twine(Record.size()).str()); | ||||
5597 | auto &Hash = getThisModule()->second.second; | ||||
5598 | int Pos = 0; | ||||
5599 | for (auto &Val : Record) { | ||||
5600 | assert(!(Val >> 32) && "Unexpected high bits set")((!(Val >> 32) && "Unexpected high bits set") ? static_cast<void> (0) : __assert_fail ("!(Val >> 32) && \"Unexpected high bits set\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5600, __PRETTY_FUNCTION__)); | ||||
5601 | Hash[Pos++] = Val; | ||||
5602 | } | ||||
5603 | break; | ||||
5604 | } | ||||
5605 | /// MODULE_CODE_VSTOFFSET: [offset] | ||||
5606 | case bitc::MODULE_CODE_VSTOFFSET: | ||||
5607 | if (Record.size() < 1) | ||||
5608 | return error("Invalid record"); | ||||
5609 | // Note that we subtract 1 here because the offset is relative to one | ||||
5610 | // word before the start of the identification or module block, which | ||||
5611 | // was historically always the start of the regular bitcode header. | ||||
5612 | VSTOffset = Record[0] - 1; | ||||
5613 | break; | ||||
5614 | // v1 GLOBALVAR: [pointer type, isconst, initid, linkage, ...] | ||||
5615 | // v1 FUNCTION: [type, callingconv, isproto, linkage, ...] | ||||
5616 | // v1 ALIAS: [alias type, addrspace, aliasee val#, linkage, ...] | ||||
5617 | // v2: [strtab offset, strtab size, v1] | ||||
5618 | case bitc::MODULE_CODE_GLOBALVAR: | ||||
5619 | case bitc::MODULE_CODE_FUNCTION: | ||||
5620 | case bitc::MODULE_CODE_ALIAS: { | ||||
5621 | StringRef Name; | ||||
5622 | ArrayRef<uint64_t> GVRecord; | ||||
5623 | std::tie(Name, GVRecord) = readNameFromStrtab(Record); | ||||
5624 | if (GVRecord.size() <= 3) | ||||
5625 | return error("Invalid record"); | ||||
5626 | uint64_t RawLinkage = GVRecord[3]; | ||||
5627 | GlobalValue::LinkageTypes Linkage = getDecodedLinkage(RawLinkage); | ||||
5628 | if (!UseStrtab) { | ||||
5629 | ValueIdToLinkageMap[ValueId++] = Linkage; | ||||
5630 | break; | ||||
5631 | } | ||||
5632 | |||||
5633 | setValueGUID(ValueId++, Name, Linkage, SourceFileName); | ||||
5634 | break; | ||||
5635 | } | ||||
5636 | } | ||||
5637 | } | ||||
5638 | continue; | ||||
5639 | } | ||||
5640 | } | ||||
5641 | } | ||||
5642 | |||||
5643 | std::vector<ValueInfo> | ||||
5644 | ModuleSummaryIndexBitcodeReader::makeRefList(ArrayRef<uint64_t> Record) { | ||||
5645 | std::vector<ValueInfo> Ret; | ||||
5646 | Ret.reserve(Record.size()); | ||||
5647 | for (uint64_t RefValueId : Record) | ||||
5648 | Ret.push_back(getValueInfoFromValueId(RefValueId).first); | ||||
5649 | return Ret; | ||||
5650 | } | ||||
5651 | |||||
5652 | std::vector<FunctionSummary::EdgeTy> | ||||
5653 | ModuleSummaryIndexBitcodeReader::makeCallList(ArrayRef<uint64_t> Record, | ||||
5654 | bool IsOldProfileFormat, | ||||
5655 | bool HasProfile, bool HasRelBF) { | ||||
5656 | std::vector<FunctionSummary::EdgeTy> Ret; | ||||
5657 | Ret.reserve(Record.size()); | ||||
5658 | for (unsigned I = 0, E = Record.size(); I != E; ++I) { | ||||
5659 | CalleeInfo::HotnessType Hotness = CalleeInfo::HotnessType::Unknown; | ||||
5660 | uint64_t RelBF = 0; | ||||
5661 | ValueInfo Callee = getValueInfoFromValueId(Record[I]).first; | ||||
5662 | if (IsOldProfileFormat) { | ||||
5663 | I += 1; // Skip old callsitecount field | ||||
5664 | if (HasProfile) | ||||
5665 | I += 1; // Skip old profilecount field | ||||
5666 | } else if (HasProfile) | ||||
5667 | Hotness = static_cast<CalleeInfo::HotnessType>(Record[++I]); | ||||
5668 | else if (HasRelBF) | ||||
5669 | RelBF = Record[++I]; | ||||
5670 | Ret.push_back(FunctionSummary::EdgeTy{Callee, CalleeInfo(Hotness, RelBF)}); | ||||
5671 | } | ||||
5672 | return Ret; | ||||
5673 | } | ||||
5674 | |||||
5675 | static void | ||||
5676 | parseWholeProgramDevirtResolutionByArg(ArrayRef<uint64_t> Record, size_t &Slot, | ||||
5677 | WholeProgramDevirtResolution &Wpd) { | ||||
5678 | uint64_t ArgNum = Record[Slot++]; | ||||
5679 | WholeProgramDevirtResolution::ByArg &B = | ||||
5680 | Wpd.ResByArg[{Record.begin() + Slot, Record.begin() + Slot + ArgNum}]; | ||||
5681 | Slot += ArgNum; | ||||
5682 | |||||
5683 | B.TheKind = | ||||
5684 | static_cast<WholeProgramDevirtResolution::ByArg::Kind>(Record[Slot++]); | ||||
5685 | B.Info = Record[Slot++]; | ||||
5686 | B.Byte = Record[Slot++]; | ||||
5687 | B.Bit = Record[Slot++]; | ||||
5688 | } | ||||
5689 | |||||
5690 | static void parseWholeProgramDevirtResolution(ArrayRef<uint64_t> Record, | ||||
5691 | StringRef Strtab, size_t &Slot, | ||||
5692 | TypeIdSummary &TypeId) { | ||||
5693 | uint64_t Id = Record[Slot++]; | ||||
5694 | WholeProgramDevirtResolution &Wpd = TypeId.WPDRes[Id]; | ||||
5695 | |||||
5696 | Wpd.TheKind = static_cast<WholeProgramDevirtResolution::Kind>(Record[Slot++]); | ||||
5697 | Wpd.SingleImplName = {Strtab.data() + Record[Slot], | ||||
5698 | static_cast<size_t>(Record[Slot + 1])}; | ||||
5699 | Slot += 2; | ||||
5700 | |||||
5701 | uint64_t ResByArgNum = Record[Slot++]; | ||||
5702 | for (uint64_t I = 0; I != ResByArgNum; ++I) | ||||
5703 | parseWholeProgramDevirtResolutionByArg(Record, Slot, Wpd); | ||||
5704 | } | ||||
5705 | |||||
5706 | static void parseTypeIdSummaryRecord(ArrayRef<uint64_t> Record, | ||||
5707 | StringRef Strtab, | ||||
5708 | ModuleSummaryIndex &TheIndex) { | ||||
5709 | size_t Slot = 0; | ||||
5710 | TypeIdSummary &TypeId = TheIndex.getOrInsertTypeIdSummary( | ||||
5711 | {Strtab.data() + Record[Slot], static_cast<size_t>(Record[Slot + 1])}); | ||||
5712 | Slot += 2; | ||||
5713 | |||||
5714 | TypeId.TTRes.TheKind = static_cast<TypeTestResolution::Kind>(Record[Slot++]); | ||||
5715 | TypeId.TTRes.SizeM1BitWidth = Record[Slot++]; | ||||
5716 | TypeId.TTRes.AlignLog2 = Record[Slot++]; | ||||
5717 | TypeId.TTRes.SizeM1 = Record[Slot++]; | ||||
5718 | TypeId.TTRes.BitMask = Record[Slot++]; | ||||
5719 | TypeId.TTRes.InlineBits = Record[Slot++]; | ||||
5720 | |||||
5721 | while (Slot < Record.size()) | ||||
5722 | parseWholeProgramDevirtResolution(Record, Strtab, Slot, TypeId); | ||||
5723 | } | ||||
5724 | |||||
5725 | void ModuleSummaryIndexBitcodeReader::parseTypeIdCompatibleVtableInfo( | ||||
5726 | ArrayRef<uint64_t> Record, size_t &Slot, | ||||
5727 | TypeIdCompatibleVtableInfo &TypeId) { | ||||
5728 | uint64_t Offset = Record[Slot++]; | ||||
5729 | ValueInfo Callee = getValueInfoFromValueId(Record[Slot++]).first; | ||||
5730 | TypeId.push_back({Offset, Callee}); | ||||
5731 | } | ||||
5732 | |||||
5733 | void ModuleSummaryIndexBitcodeReader::parseTypeIdCompatibleVtableSummaryRecord( | ||||
5734 | ArrayRef<uint64_t> Record) { | ||||
5735 | size_t Slot = 0; | ||||
5736 | TypeIdCompatibleVtableInfo &TypeId = | ||||
5737 | TheIndex.getOrInsertTypeIdCompatibleVtableSummary( | ||||
5738 | {Strtab.data() + Record[Slot], | ||||
5739 | static_cast<size_t>(Record[Slot + 1])}); | ||||
5740 | Slot += 2; | ||||
5741 | |||||
5742 | while (Slot < Record.size()) | ||||
5743 | parseTypeIdCompatibleVtableInfo(Record, Slot, TypeId); | ||||
5744 | } | ||||
5745 | |||||
5746 | static void setSpecialRefs(std::vector<ValueInfo> &Refs, unsigned ROCnt, | ||||
5747 | unsigned WOCnt) { | ||||
5748 | // Readonly and writeonly refs are in the end of the refs list. | ||||
5749 | assert(ROCnt + WOCnt <= Refs.size())((ROCnt + WOCnt <= Refs.size()) ? static_cast<void> ( 0) : __assert_fail ("ROCnt + WOCnt <= Refs.size()", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5749, __PRETTY_FUNCTION__)); | ||||
5750 | unsigned FirstWORef = Refs.size() - WOCnt; | ||||
5751 | unsigned RefNo = FirstWORef - ROCnt; | ||||
5752 | for (; RefNo < FirstWORef; ++RefNo) | ||||
5753 | Refs[RefNo].setReadOnly(); | ||||
5754 | for (; RefNo < Refs.size(); ++RefNo) | ||||
5755 | Refs[RefNo].setWriteOnly(); | ||||
5756 | } | ||||
5757 | |||||
5758 | // Eagerly parse the entire summary block. This populates the GlobalValueSummary | ||||
5759 | // objects in the index. | ||||
5760 | Error ModuleSummaryIndexBitcodeReader::parseEntireSummary(unsigned ID) { | ||||
5761 | if (Error Err = Stream.EnterSubBlock(ID)) | ||||
5762 | return Err; | ||||
5763 | SmallVector<uint64_t, 64> Record; | ||||
5764 | |||||
5765 | // Parse version | ||||
5766 | { | ||||
5767 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
5768 | if (!MaybeEntry) | ||||
5769 | return MaybeEntry.takeError(); | ||||
5770 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
5771 | |||||
5772 | if (Entry.Kind != BitstreamEntry::Record) | ||||
5773 | return error("Invalid Summary Block: record for version expected"); | ||||
5774 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
5775 | if (!MaybeRecord) | ||||
5776 | return MaybeRecord.takeError(); | ||||
5777 | if (MaybeRecord.get() != bitc::FS_VERSION) | ||||
5778 | return error("Invalid Summary Block: version expected"); | ||||
5779 | } | ||||
5780 | const uint64_t Version = Record[0]; | ||||
5781 | const bool IsOldProfileFormat = Version == 1; | ||||
5782 | if (Version < 1 || Version > ModuleSummaryIndex::BitcodeSummaryVersion) | ||||
5783 | return error("Invalid summary version " + Twine(Version) + | ||||
5784 | ". Version should be in the range [1-" + | ||||
5785 | Twine(ModuleSummaryIndex::BitcodeSummaryVersion) + | ||||
5786 | "]."); | ||||
5787 | Record.clear(); | ||||
5788 | |||||
5789 | // Keep around the last seen summary to be used when we see an optional | ||||
5790 | // "OriginalName" attachement. | ||||
5791 | GlobalValueSummary *LastSeenSummary = nullptr; | ||||
5792 | GlobalValue::GUID LastSeenGUID = 0; | ||||
5793 | |||||
5794 | // We can expect to see any number of type ID information records before | ||||
5795 | // each function summary records; these variables store the information | ||||
5796 | // collected so far so that it can be used to create the summary object. | ||||
5797 | std::vector<GlobalValue::GUID> PendingTypeTests; | ||||
5798 | std::vector<FunctionSummary::VFuncId> PendingTypeTestAssumeVCalls, | ||||
5799 | PendingTypeCheckedLoadVCalls; | ||||
5800 | std::vector<FunctionSummary::ConstVCall> PendingTypeTestAssumeConstVCalls, | ||||
5801 | PendingTypeCheckedLoadConstVCalls; | ||||
5802 | |||||
5803 | while (true) { | ||||
5804 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
5805 | if (!MaybeEntry) | ||||
5806 | return MaybeEntry.takeError(); | ||||
5807 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
5808 | |||||
5809 | switch (Entry.Kind) { | ||||
5810 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
5811 | case BitstreamEntry::Error: | ||||
5812 | return error("Malformed block"); | ||||
5813 | case BitstreamEntry::EndBlock: | ||||
5814 | return Error::success(); | ||||
5815 | case BitstreamEntry::Record: | ||||
5816 | // The interesting case. | ||||
5817 | break; | ||||
5818 | } | ||||
5819 | |||||
5820 | // Read a record. The record format depends on whether this | ||||
5821 | // is a per-module index or a combined index file. In the per-module | ||||
5822 | // case the records contain the associated value's ID for correlation | ||||
5823 | // with VST entries. In the combined index the correlation is done | ||||
5824 | // via the bitcode offset of the summary records (which were saved | ||||
5825 | // in the combined index VST entries). The records also contain | ||||
5826 | // information used for ThinLTO renaming and importing. | ||||
5827 | Record.clear(); | ||||
5828 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | ||||
5829 | if (!MaybeBitCode) | ||||
5830 | return MaybeBitCode.takeError(); | ||||
5831 | switch (unsigned BitCode = MaybeBitCode.get()) { | ||||
5832 | default: // Default behavior: ignore. | ||||
5833 | break; | ||||
5834 | case bitc::FS_FLAGS: { // [flags] | ||||
5835 | uint64_t Flags = Record[0]; | ||||
5836 | // Scan flags. | ||||
5837 | assert(Flags <= 0x3f && "Unexpected bits in flag")((Flags <= 0x3f && "Unexpected bits in flag") ? static_cast <void> (0) : __assert_fail ("Flags <= 0x3f && \"Unexpected bits in flag\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5837, __PRETTY_FUNCTION__)); | ||||
5838 | |||||
5839 | // 1 bit: WithGlobalValueDeadStripping flag. | ||||
5840 | // Set on combined index only. | ||||
5841 | if (Flags & 0x1) | ||||
5842 | TheIndex.setWithGlobalValueDeadStripping(); | ||||
5843 | // 1 bit: SkipModuleByDistributedBackend flag. | ||||
5844 | // Set on combined index only. | ||||
5845 | if (Flags & 0x2) | ||||
5846 | TheIndex.setSkipModuleByDistributedBackend(); | ||||
5847 | // 1 bit: HasSyntheticEntryCounts flag. | ||||
5848 | // Set on combined index only. | ||||
5849 | if (Flags & 0x4) | ||||
5850 | TheIndex.setHasSyntheticEntryCounts(); | ||||
5851 | // 1 bit: DisableSplitLTOUnit flag. | ||||
5852 | // Set on per module indexes. It is up to the client to validate | ||||
5853 | // the consistency of this flag across modules being linked. | ||||
5854 | if (Flags & 0x8) | ||||
5855 | TheIndex.setEnableSplitLTOUnit(); | ||||
5856 | // 1 bit: PartiallySplitLTOUnits flag. | ||||
5857 | // Set on combined index only. | ||||
5858 | if (Flags & 0x10) | ||||
5859 | TheIndex.setPartiallySplitLTOUnits(); | ||||
5860 | // 1 bit: WithAttributePropagation flag. | ||||
5861 | // Set on combined index only. | ||||
5862 | if (Flags & 0x20) | ||||
5863 | TheIndex.setWithAttributePropagation(); | ||||
5864 | break; | ||||
5865 | } | ||||
5866 | case bitc::FS_VALUE_GUID: { // [valueid, refguid] | ||||
5867 | uint64_t ValueID = Record[0]; | ||||
5868 | GlobalValue::GUID RefGUID = Record[1]; | ||||
5869 | ValueIdToValueInfoMap[ValueID] = | ||||
5870 | std::make_pair(TheIndex.getOrInsertValueInfo(RefGUID), RefGUID); | ||||
5871 | break; | ||||
5872 | } | ||||
5873 | // FS_PERMODULE: [valueid, flags, instcount, fflags, numrefs, | ||||
5874 | // numrefs x valueid, n x (valueid)] | ||||
5875 | // FS_PERMODULE_PROFILE: [valueid, flags, instcount, fflags, numrefs, | ||||
5876 | // numrefs x valueid, | ||||
5877 | // n x (valueid, hotness)] | ||||
5878 | // FS_PERMODULE_RELBF: [valueid, flags, instcount, fflags, numrefs, | ||||
5879 | // numrefs x valueid, | ||||
5880 | // n x (valueid, relblockfreq)] | ||||
5881 | case bitc::FS_PERMODULE: | ||||
5882 | case bitc::FS_PERMODULE_RELBF: | ||||
5883 | case bitc::FS_PERMODULE_PROFILE: { | ||||
5884 | unsigned ValueID = Record[0]; | ||||
5885 | uint64_t RawFlags = Record[1]; | ||||
5886 | unsigned InstCount = Record[2]; | ||||
5887 | uint64_t RawFunFlags = 0; | ||||
5888 | unsigned NumRefs = Record[3]; | ||||
5889 | unsigned NumRORefs = 0, NumWORefs = 0; | ||||
5890 | int RefListStartIndex = 4; | ||||
5891 | if (Version >= 4) { | ||||
5892 | RawFunFlags = Record[3]; | ||||
5893 | NumRefs = Record[4]; | ||||
5894 | RefListStartIndex = 5; | ||||
5895 | if (Version >= 5) { | ||||
5896 | NumRORefs = Record[5]; | ||||
5897 | RefListStartIndex = 6; | ||||
5898 | if (Version >= 7) { | ||||
5899 | NumWORefs = Record[6]; | ||||
5900 | RefListStartIndex = 7; | ||||
5901 | } | ||||
5902 | } | ||||
5903 | } | ||||
5904 | |||||
5905 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | ||||
5906 | // The module path string ref set in the summary must be owned by the | ||||
5907 | // index's module string table. Since we don't have a module path | ||||
5908 | // string table section in the per-module index, we create a single | ||||
5909 | // module path string table entry with an empty (0) ID to take | ||||
5910 | // ownership. | ||||
5911 | int CallGraphEdgeStartIndex = RefListStartIndex + NumRefs; | ||||
5912 | assert(Record.size() >= RefListStartIndex + NumRefs &&((Record.size() >= RefListStartIndex + NumRefs && "Record size inconsistent with number of references" ) ? static_cast<void> (0) : __assert_fail ("Record.size() >= RefListStartIndex + NumRefs && \"Record size inconsistent with number of references\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5913, __PRETTY_FUNCTION__)) | ||||
5913 | "Record size inconsistent with number of references")((Record.size() >= RefListStartIndex + NumRefs && "Record size inconsistent with number of references" ) ? static_cast<void> (0) : __assert_fail ("Record.size() >= RefListStartIndex + NumRefs && \"Record size inconsistent with number of references\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 5913, __PRETTY_FUNCTION__)); | ||||
5914 | std::vector<ValueInfo> Refs = makeRefList( | ||||
5915 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); | ||||
5916 | bool HasProfile = (BitCode == bitc::FS_PERMODULE_PROFILE); | ||||
5917 | bool HasRelBF = (BitCode == bitc::FS_PERMODULE_RELBF); | ||||
5918 | std::vector<FunctionSummary::EdgeTy> Calls = makeCallList( | ||||
5919 | ArrayRef<uint64_t>(Record).slice(CallGraphEdgeStartIndex), | ||||
5920 | IsOldProfileFormat, HasProfile, HasRelBF); | ||||
5921 | setSpecialRefs(Refs, NumRORefs, NumWORefs); | ||||
5922 | auto FS = std::make_unique<FunctionSummary>( | ||||
5923 | Flags, InstCount, getDecodedFFlags(RawFunFlags), /*EntryCount=*/0, | ||||
5924 | std::move(Refs), std::move(Calls), std::move(PendingTypeTests), | ||||
5925 | std::move(PendingTypeTestAssumeVCalls), | ||||
5926 | std::move(PendingTypeCheckedLoadVCalls), | ||||
5927 | std::move(PendingTypeTestAssumeConstVCalls), | ||||
5928 | std::move(PendingTypeCheckedLoadConstVCalls)); | ||||
5929 | auto VIAndOriginalGUID = getValueInfoFromValueId(ValueID); | ||||
5930 | FS->setModulePath(getThisModule()->first()); | ||||
5931 | FS->setOriginalName(VIAndOriginalGUID.second); | ||||
5932 | TheIndex.addGlobalValueSummary(VIAndOriginalGUID.first, std::move(FS)); | ||||
5933 | break; | ||||
5934 | } | ||||
5935 | // FS_ALIAS: [valueid, flags, valueid] | ||||
5936 | // Aliases must be emitted (and parsed) after all FS_PERMODULE entries, as | ||||
5937 | // they expect all aliasee summaries to be available. | ||||
5938 | case bitc::FS_ALIAS: { | ||||
5939 | unsigned ValueID = Record[0]; | ||||
5940 | uint64_t RawFlags = Record[1]; | ||||
5941 | unsigned AliaseeID = Record[2]; | ||||
5942 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | ||||
5943 | auto AS = std::make_unique<AliasSummary>(Flags); | ||||
5944 | // The module path string ref set in the summary must be owned by the | ||||
5945 | // index's module string table. Since we don't have a module path | ||||
5946 | // string table section in the per-module index, we create a single | ||||
5947 | // module path string table entry with an empty (0) ID to take | ||||
5948 | // ownership. | ||||
5949 | AS->setModulePath(getThisModule()->first()); | ||||
5950 | |||||
5951 | auto AliaseeVI = getValueInfoFromValueId(AliaseeID).first; | ||||
5952 | auto AliaseeInModule = TheIndex.findSummaryInModule(AliaseeVI, ModulePath); | ||||
5953 | if (!AliaseeInModule) | ||||
5954 | return error("Alias expects aliasee summary to be parsed"); | ||||
5955 | AS->setAliasee(AliaseeVI, AliaseeInModule); | ||||
5956 | |||||
5957 | auto GUID = getValueInfoFromValueId(ValueID); | ||||
5958 | AS->setOriginalName(GUID.second); | ||||
5959 | TheIndex.addGlobalValueSummary(GUID.first, std::move(AS)); | ||||
5960 | break; | ||||
5961 | } | ||||
5962 | // FS_PERMODULE_GLOBALVAR_INIT_REFS: [valueid, flags, varflags, n x valueid] | ||||
5963 | case bitc::FS_PERMODULE_GLOBALVAR_INIT_REFS: { | ||||
5964 | unsigned ValueID = Record[0]; | ||||
5965 | uint64_t RawFlags = Record[1]; | ||||
5966 | unsigned RefArrayStart = 2; | ||||
5967 | GlobalVarSummary::GVarFlags GVF(/* ReadOnly */ false, | ||||
5968 | /* WriteOnly */ false); | ||||
5969 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | ||||
5970 | if (Version >= 5) { | ||||
5971 | GVF = getDecodedGVarFlags(Record[2]); | ||||
5972 | RefArrayStart = 3; | ||||
5973 | } | ||||
5974 | std::vector<ValueInfo> Refs = | ||||
5975 | makeRefList(ArrayRef<uint64_t>(Record).slice(RefArrayStart)); | ||||
5976 | auto FS = | ||||
5977 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); | ||||
5978 | FS->setModulePath(getThisModule()->first()); | ||||
5979 | auto GUID = getValueInfoFromValueId(ValueID); | ||||
5980 | FS->setOriginalName(GUID.second); | ||||
5981 | TheIndex.addGlobalValueSummary(GUID.first, std::move(FS)); | ||||
5982 | break; | ||||
5983 | } | ||||
5984 | // FS_PERMODULE_VTABLE_GLOBALVAR_INIT_REFS: [valueid, flags, varflags, | ||||
5985 | // numrefs, numrefs x valueid, | ||||
5986 | // n x (valueid, offset)] | ||||
5987 | case bitc::FS_PERMODULE_VTABLE_GLOBALVAR_INIT_REFS: { | ||||
5988 | unsigned ValueID = Record[0]; | ||||
5989 | uint64_t RawFlags = Record[1]; | ||||
5990 | GlobalVarSummary::GVarFlags GVF = getDecodedGVarFlags(Record[2]); | ||||
5991 | unsigned NumRefs = Record[3]; | ||||
5992 | unsigned RefListStartIndex = 4; | ||||
5993 | unsigned VTableListStartIndex = RefListStartIndex + NumRefs; | ||||
5994 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | ||||
5995 | std::vector<ValueInfo> Refs = makeRefList( | ||||
5996 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); | ||||
5997 | VTableFuncList VTableFuncs; | ||||
5998 | for (unsigned I = VTableListStartIndex, E = Record.size(); I != E; ++I) { | ||||
5999 | ValueInfo Callee = getValueInfoFromValueId(Record[I]).first; | ||||
6000 | uint64_t Offset = Record[++I]; | ||||
6001 | VTableFuncs.push_back({Callee, Offset}); | ||||
6002 | } | ||||
6003 | auto VS = | ||||
6004 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); | ||||
6005 | VS->setModulePath(getThisModule()->first()); | ||||
6006 | VS->setVTableFuncs(VTableFuncs); | ||||
6007 | auto GUID = getValueInfoFromValueId(ValueID); | ||||
6008 | VS->setOriginalName(GUID.second); | ||||
6009 | TheIndex.addGlobalValueSummary(GUID.first, std::move(VS)); | ||||
6010 | break; | ||||
6011 | } | ||||
6012 | // FS_COMBINED: [valueid, modid, flags, instcount, fflags, numrefs, | ||||
6013 | // numrefs x valueid, n x (valueid)] | ||||
6014 | // FS_COMBINED_PROFILE: [valueid, modid, flags, instcount, fflags, numrefs, | ||||
6015 | // numrefs x valueid, n x (valueid, hotness)] | ||||
6016 | case bitc::FS_COMBINED: | ||||
6017 | case bitc::FS_COMBINED_PROFILE: { | ||||
6018 | unsigned ValueID = Record[0]; | ||||
6019 | uint64_t ModuleId = Record[1]; | ||||
6020 | uint64_t RawFlags = Record[2]; | ||||
6021 | unsigned InstCount = Record[3]; | ||||
6022 | uint64_t RawFunFlags = 0; | ||||
6023 | uint64_t EntryCount = 0; | ||||
6024 | unsigned NumRefs = Record[4]; | ||||
6025 | unsigned NumRORefs = 0, NumWORefs = 0; | ||||
6026 | int RefListStartIndex = 5; | ||||
6027 | |||||
6028 | if (Version >= 4) { | ||||
6029 | RawFunFlags = Record[4]; | ||||
6030 | RefListStartIndex = 6; | ||||
6031 | size_t NumRefsIndex = 5; | ||||
6032 | if (Version >= 5) { | ||||
6033 | unsigned NumRORefsOffset = 1; | ||||
6034 | RefListStartIndex = 7; | ||||
6035 | if (Version >= 6) { | ||||
6036 | NumRefsIndex = 6; | ||||
6037 | EntryCount = Record[5]; | ||||
6038 | RefListStartIndex = 8; | ||||
6039 | if (Version >= 7) { | ||||
6040 | RefListStartIndex = 9; | ||||
6041 | NumWORefs = Record[8]; | ||||
6042 | NumRORefsOffset = 2; | ||||
6043 | } | ||||
6044 | } | ||||
6045 | NumRORefs = Record[RefListStartIndex - NumRORefsOffset]; | ||||
6046 | } | ||||
6047 | NumRefs = Record[NumRefsIndex]; | ||||
6048 | } | ||||
6049 | |||||
6050 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | ||||
6051 | int CallGraphEdgeStartIndex = RefListStartIndex + NumRefs; | ||||
6052 | assert(Record.size() >= RefListStartIndex + NumRefs &&((Record.size() >= RefListStartIndex + NumRefs && "Record size inconsistent with number of references" ) ? static_cast<void> (0) : __assert_fail ("Record.size() >= RefListStartIndex + NumRefs && \"Record size inconsistent with number of references\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6053, __PRETTY_FUNCTION__)) | ||||
6053 | "Record size inconsistent with number of references")((Record.size() >= RefListStartIndex + NumRefs && "Record size inconsistent with number of references" ) ? static_cast<void> (0) : __assert_fail ("Record.size() >= RefListStartIndex + NumRefs && \"Record size inconsistent with number of references\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6053, __PRETTY_FUNCTION__)); | ||||
6054 | std::vector<ValueInfo> Refs = makeRefList( | ||||
6055 | ArrayRef<uint64_t>(Record).slice(RefListStartIndex, NumRefs)); | ||||
6056 | bool HasProfile = (BitCode == bitc::FS_COMBINED_PROFILE); | ||||
6057 | std::vector<FunctionSummary::EdgeTy> Edges = makeCallList( | ||||
6058 | ArrayRef<uint64_t>(Record).slice(CallGraphEdgeStartIndex), | ||||
6059 | IsOldProfileFormat, HasProfile, false); | ||||
6060 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; | ||||
6061 | setSpecialRefs(Refs, NumRORefs, NumWORefs); | ||||
6062 | auto FS = std::make_unique<FunctionSummary>( | ||||
6063 | Flags, InstCount, getDecodedFFlags(RawFunFlags), EntryCount, | ||||
6064 | std::move(Refs), std::move(Edges), std::move(PendingTypeTests), | ||||
6065 | std::move(PendingTypeTestAssumeVCalls), | ||||
6066 | std::move(PendingTypeCheckedLoadVCalls), | ||||
6067 | std::move(PendingTypeTestAssumeConstVCalls), | ||||
6068 | std::move(PendingTypeCheckedLoadConstVCalls)); | ||||
6069 | LastSeenSummary = FS.get(); | ||||
6070 | LastSeenGUID = VI.getGUID(); | ||||
6071 | FS->setModulePath(ModuleIdMap[ModuleId]); | ||||
6072 | TheIndex.addGlobalValueSummary(VI, std::move(FS)); | ||||
6073 | break; | ||||
6074 | } | ||||
6075 | // FS_COMBINED_ALIAS: [valueid, modid, flags, valueid] | ||||
6076 | // Aliases must be emitted (and parsed) after all FS_COMBINED entries, as | ||||
6077 | // they expect all aliasee summaries to be available. | ||||
6078 | case bitc::FS_COMBINED_ALIAS: { | ||||
6079 | unsigned ValueID = Record[0]; | ||||
6080 | uint64_t ModuleId = Record[1]; | ||||
6081 | uint64_t RawFlags = Record[2]; | ||||
6082 | unsigned AliaseeValueId = Record[3]; | ||||
6083 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | ||||
6084 | auto AS = std::make_unique<AliasSummary>(Flags); | ||||
6085 | LastSeenSummary = AS.get(); | ||||
6086 | AS->setModulePath(ModuleIdMap[ModuleId]); | ||||
6087 | |||||
6088 | auto AliaseeVI = getValueInfoFromValueId(AliaseeValueId).first; | ||||
6089 | auto AliaseeInModule = TheIndex.findSummaryInModule(AliaseeVI, AS->modulePath()); | ||||
6090 | AS->setAliasee(AliaseeVI, AliaseeInModule); | ||||
6091 | |||||
6092 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; | ||||
6093 | LastSeenGUID = VI.getGUID(); | ||||
6094 | TheIndex.addGlobalValueSummary(VI, std::move(AS)); | ||||
6095 | break; | ||||
6096 | } | ||||
6097 | // FS_COMBINED_GLOBALVAR_INIT_REFS: [valueid, modid, flags, n x valueid] | ||||
6098 | case bitc::FS_COMBINED_GLOBALVAR_INIT_REFS: { | ||||
6099 | unsigned ValueID = Record[0]; | ||||
6100 | uint64_t ModuleId = Record[1]; | ||||
6101 | uint64_t RawFlags = Record[2]; | ||||
6102 | unsigned RefArrayStart = 3; | ||||
6103 | GlobalVarSummary::GVarFlags GVF(/* ReadOnly */ false, | ||||
6104 | /* WriteOnly */ false); | ||||
6105 | auto Flags = getDecodedGVSummaryFlags(RawFlags, Version); | ||||
6106 | if (Version >= 5) { | ||||
6107 | GVF = getDecodedGVarFlags(Record[3]); | ||||
6108 | RefArrayStart = 4; | ||||
6109 | } | ||||
6110 | std::vector<ValueInfo> Refs = | ||||
6111 | makeRefList(ArrayRef<uint64_t>(Record).slice(RefArrayStart)); | ||||
6112 | auto FS = | ||||
6113 | std::make_unique<GlobalVarSummary>(Flags, GVF, std::move(Refs)); | ||||
6114 | LastSeenSummary = FS.get(); | ||||
6115 | FS->setModulePath(ModuleIdMap[ModuleId]); | ||||
6116 | ValueInfo VI = getValueInfoFromValueId(ValueID).first; | ||||
6117 | LastSeenGUID = VI.getGUID(); | ||||
6118 | TheIndex.addGlobalValueSummary(VI, std::move(FS)); | ||||
6119 | break; | ||||
6120 | } | ||||
6121 | // FS_COMBINED_ORIGINAL_NAME: [original_name] | ||||
6122 | case bitc::FS_COMBINED_ORIGINAL_NAME: { | ||||
6123 | uint64_t OriginalName = Record[0]; | ||||
6124 | if (!LastSeenSummary) | ||||
6125 | return error("Name attachment that does not follow a combined record"); | ||||
6126 | LastSeenSummary->setOriginalName(OriginalName); | ||||
6127 | TheIndex.addOriginalName(LastSeenGUID, OriginalName); | ||||
6128 | // Reset the LastSeenSummary | ||||
6129 | LastSeenSummary = nullptr; | ||||
6130 | LastSeenGUID = 0; | ||||
6131 | break; | ||||
6132 | } | ||||
6133 | case bitc::FS_TYPE_TESTS: | ||||
6134 | assert(PendingTypeTests.empty())((PendingTypeTests.empty()) ? static_cast<void> (0) : __assert_fail ("PendingTypeTests.empty()", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6134, __PRETTY_FUNCTION__)); | ||||
6135 | PendingTypeTests.insert(PendingTypeTests.end(), Record.begin(), | ||||
6136 | Record.end()); | ||||
6137 | break; | ||||
6138 | |||||
6139 | case bitc::FS_TYPE_TEST_ASSUME_VCALLS: | ||||
6140 | assert(PendingTypeTestAssumeVCalls.empty())((PendingTypeTestAssumeVCalls.empty()) ? static_cast<void> (0) : __assert_fail ("PendingTypeTestAssumeVCalls.empty()", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6140, __PRETTY_FUNCTION__)); | ||||
6141 | for (unsigned I = 0; I != Record.size(); I += 2) | ||||
6142 | PendingTypeTestAssumeVCalls.push_back({Record[I], Record[I+1]}); | ||||
6143 | break; | ||||
6144 | |||||
6145 | case bitc::FS_TYPE_CHECKED_LOAD_VCALLS: | ||||
6146 | assert(PendingTypeCheckedLoadVCalls.empty())((PendingTypeCheckedLoadVCalls.empty()) ? static_cast<void > (0) : __assert_fail ("PendingTypeCheckedLoadVCalls.empty()" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6146, __PRETTY_FUNCTION__)); | ||||
6147 | for (unsigned I = 0; I != Record.size(); I += 2) | ||||
6148 | PendingTypeCheckedLoadVCalls.push_back({Record[I], Record[I+1]}); | ||||
6149 | break; | ||||
6150 | |||||
6151 | case bitc::FS_TYPE_TEST_ASSUME_CONST_VCALL: | ||||
6152 | PendingTypeTestAssumeConstVCalls.push_back( | ||||
6153 | {{Record[0], Record[1]}, {Record.begin() + 2, Record.end()}}); | ||||
6154 | break; | ||||
6155 | |||||
6156 | case bitc::FS_TYPE_CHECKED_LOAD_CONST_VCALL: | ||||
6157 | PendingTypeCheckedLoadConstVCalls.push_back( | ||||
6158 | {{Record[0], Record[1]}, {Record.begin() + 2, Record.end()}}); | ||||
6159 | break; | ||||
6160 | |||||
6161 | case bitc::FS_CFI_FUNCTION_DEFS: { | ||||
6162 | std::set<std::string> &CfiFunctionDefs = TheIndex.cfiFunctionDefs(); | ||||
6163 | for (unsigned I = 0; I != Record.size(); I += 2) | ||||
6164 | CfiFunctionDefs.insert( | ||||
6165 | {Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])}); | ||||
6166 | break; | ||||
6167 | } | ||||
6168 | |||||
6169 | case bitc::FS_CFI_FUNCTION_DECLS: { | ||||
6170 | std::set<std::string> &CfiFunctionDecls = TheIndex.cfiFunctionDecls(); | ||||
6171 | for (unsigned I = 0; I != Record.size(); I += 2) | ||||
6172 | CfiFunctionDecls.insert( | ||||
6173 | {Strtab.data() + Record[I], static_cast<size_t>(Record[I + 1])}); | ||||
6174 | break; | ||||
6175 | } | ||||
6176 | |||||
6177 | case bitc::FS_TYPE_ID: | ||||
6178 | parseTypeIdSummaryRecord(Record, Strtab, TheIndex); | ||||
6179 | break; | ||||
6180 | |||||
6181 | case bitc::FS_TYPE_ID_METADATA: | ||||
6182 | parseTypeIdCompatibleVtableSummaryRecord(Record); | ||||
6183 | break; | ||||
6184 | } | ||||
6185 | } | ||||
6186 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6186); | ||||
6187 | } | ||||
6188 | |||||
6189 | // Parse the module string table block into the Index. | ||||
6190 | // This populates the ModulePathStringTable map in the index. | ||||
6191 | Error ModuleSummaryIndexBitcodeReader::parseModuleStringTable() { | ||||
6192 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_STRTAB_BLOCK_ID)) | ||||
6193 | return Err; | ||||
6194 | |||||
6195 | SmallVector<uint64_t, 64> Record; | ||||
6196 | |||||
6197 | SmallString<128> ModulePath; | ||||
6198 | ModuleSummaryIndex::ModuleInfo *LastSeenModule = nullptr; | ||||
6199 | |||||
6200 | while (true) { | ||||
6201 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
6202 | if (!MaybeEntry) | ||||
6203 | return MaybeEntry.takeError(); | ||||
6204 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
6205 | |||||
6206 | switch (Entry.Kind) { | ||||
6207 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
6208 | case BitstreamEntry::Error: | ||||
6209 | return error("Malformed block"); | ||||
6210 | case BitstreamEntry::EndBlock: | ||||
6211 | return Error::success(); | ||||
6212 | case BitstreamEntry::Record: | ||||
6213 | // The interesting case. | ||||
6214 | break; | ||||
6215 | } | ||||
6216 | |||||
6217 | Record.clear(); | ||||
6218 | Expected<unsigned> MaybeRecord = Stream.readRecord(Entry.ID, Record); | ||||
6219 | if (!MaybeRecord) | ||||
6220 | return MaybeRecord.takeError(); | ||||
6221 | switch (MaybeRecord.get()) { | ||||
6222 | default: // Default behavior: ignore. | ||||
6223 | break; | ||||
6224 | case bitc::MST_CODE_ENTRY: { | ||||
6225 | // MST_ENTRY: [modid, namechar x N] | ||||
6226 | uint64_t ModuleId = Record[0]; | ||||
6227 | |||||
6228 | if (convertToString(Record, 1, ModulePath)) | ||||
6229 | return error("Invalid record"); | ||||
6230 | |||||
6231 | LastSeenModule = TheIndex.addModule(ModulePath, ModuleId); | ||||
6232 | ModuleIdMap[ModuleId] = LastSeenModule->first(); | ||||
6233 | |||||
6234 | ModulePath.clear(); | ||||
6235 | break; | ||||
6236 | } | ||||
6237 | /// MST_CODE_HASH: [5*i32] | ||||
6238 | case bitc::MST_CODE_HASH: { | ||||
6239 | if (Record.size() != 5) | ||||
6240 | return error("Invalid hash length " + Twine(Record.size()).str()); | ||||
6241 | if (!LastSeenModule) | ||||
6242 | return error("Invalid hash that does not follow a module path"); | ||||
6243 | int Pos = 0; | ||||
6244 | for (auto &Val : Record) { | ||||
6245 | assert(!(Val >> 32) && "Unexpected high bits set")((!(Val >> 32) && "Unexpected high bits set") ? static_cast<void> (0) : __assert_fail ("!(Val >> 32) && \"Unexpected high bits set\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6245, __PRETTY_FUNCTION__)); | ||||
6246 | LastSeenModule->second.second[Pos++] = Val; | ||||
6247 | } | ||||
6248 | // Reset LastSeenModule to avoid overriding the hash unexpectedly. | ||||
6249 | LastSeenModule = nullptr; | ||||
6250 | break; | ||||
6251 | } | ||||
6252 | } | ||||
6253 | } | ||||
6254 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6254); | ||||
6255 | } | ||||
6256 | |||||
6257 | namespace { | ||||
6258 | |||||
6259 | // FIXME: This class is only here to support the transition to llvm::Error. It | ||||
6260 | // will be removed once this transition is complete. Clients should prefer to | ||||
6261 | // deal with the Error value directly, rather than converting to error_code. | ||||
6262 | class BitcodeErrorCategoryType : public std::error_category { | ||||
6263 | const char *name() const noexcept override { | ||||
6264 | return "llvm.bitcode"; | ||||
6265 | } | ||||
6266 | |||||
6267 | std::string message(int IE) const override { | ||||
6268 | BitcodeError E = static_cast<BitcodeError>(IE); | ||||
6269 | switch (E) { | ||||
6270 | case BitcodeError::CorruptedBitcode: | ||||
6271 | return "Corrupted bitcode"; | ||||
6272 | } | ||||
6273 | llvm_unreachable("Unknown error type!")::llvm::llvm_unreachable_internal("Unknown error type!", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6273); | ||||
6274 | } | ||||
6275 | }; | ||||
6276 | |||||
6277 | } // end anonymous namespace | ||||
6278 | |||||
6279 | static ManagedStatic<BitcodeErrorCategoryType> ErrorCategory; | ||||
6280 | |||||
6281 | const std::error_category &llvm::BitcodeErrorCategory() { | ||||
6282 | return *ErrorCategory; | ||||
6283 | } | ||||
6284 | |||||
6285 | static Expected<StringRef> readBlobInRecord(BitstreamCursor &Stream, | ||||
6286 | unsigned Block, unsigned RecordID) { | ||||
6287 | if (Error Err = Stream.EnterSubBlock(Block)) | ||||
6288 | return std::move(Err); | ||||
6289 | |||||
6290 | StringRef Strtab; | ||||
6291 | while (true) { | ||||
6292 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
6293 | if (!MaybeEntry) | ||||
6294 | return MaybeEntry.takeError(); | ||||
6295 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | ||||
6296 | |||||
6297 | switch (Entry.Kind) { | ||||
6298 | case BitstreamEntry::EndBlock: | ||||
6299 | return Strtab; | ||||
6300 | |||||
6301 | case BitstreamEntry::Error: | ||||
6302 | return error("Malformed block"); | ||||
6303 | |||||
6304 | case BitstreamEntry::SubBlock: | ||||
6305 | if (Error Err = Stream.SkipBlock()) | ||||
6306 | return std::move(Err); | ||||
6307 | break; | ||||
6308 | |||||
6309 | case BitstreamEntry::Record: | ||||
6310 | StringRef Blob; | ||||
6311 | SmallVector<uint64_t, 1> Record; | ||||
6312 | Expected<unsigned> MaybeRecord = | ||||
6313 | Stream.readRecord(Entry.ID, Record, &Blob); | ||||
6314 | if (!MaybeRecord) | ||||
6315 | return MaybeRecord.takeError(); | ||||
6316 | if (MaybeRecord.get() == RecordID) | ||||
6317 | Strtab = Blob; | ||||
6318 | break; | ||||
6319 | } | ||||
6320 | } | ||||
6321 | } | ||||
6322 | |||||
6323 | //===----------------------------------------------------------------------===// | ||||
6324 | // External interface | ||||
6325 | //===----------------------------------------------------------------------===// | ||||
6326 | |||||
6327 | Expected<std::vector<BitcodeModule>> | ||||
6328 | llvm::getBitcodeModuleList(MemoryBufferRef Buffer) { | ||||
6329 | auto FOrErr = getBitcodeFileContents(Buffer); | ||||
6330 | if (!FOrErr) | ||||
6331 | return FOrErr.takeError(); | ||||
6332 | return std::move(FOrErr->Mods); | ||||
6333 | } | ||||
6334 | |||||
6335 | Expected<BitcodeFileContents> | ||||
6336 | llvm::getBitcodeFileContents(MemoryBufferRef Buffer) { | ||||
6337 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); | ||||
6338 | if (!StreamOrErr) | ||||
6339 | return StreamOrErr.takeError(); | ||||
6340 | BitstreamCursor &Stream = *StreamOrErr; | ||||
6341 | |||||
6342 | BitcodeFileContents F; | ||||
6343 | while (true) { | ||||
6344 | uint64_t BCBegin = Stream.getCurrentByteNo(); | ||||
6345 | |||||
6346 | // We may be consuming bitcode from a client that leaves garbage at the end | ||||
6347 | // of the bitcode stream (e.g. Apple's ar tool). If we are close enough to | ||||
6348 | // the end that there cannot possibly be another module, stop looking. | ||||
6349 | if (BCBegin + 8 >= Stream.getBitcodeBytes().size()) | ||||
6350 | return F; | ||||
6351 | |||||
6352 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
6353 | if (!MaybeEntry) | ||||
6354 | return MaybeEntry.takeError(); | ||||
6355 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | ||||
6356 | |||||
6357 | switch (Entry.Kind) { | ||||
6358 | case BitstreamEntry::EndBlock: | ||||
6359 | case BitstreamEntry::Error: | ||||
6360 | return error("Malformed block"); | ||||
6361 | |||||
6362 | case BitstreamEntry::SubBlock: { | ||||
6363 | uint64_t IdentificationBit = -1ull; | ||||
6364 | if (Entry.ID == bitc::IDENTIFICATION_BLOCK_ID) { | ||||
6365 | IdentificationBit = Stream.GetCurrentBitNo() - BCBegin * 8; | ||||
6366 | if (Error Err = Stream.SkipBlock()) | ||||
6367 | return std::move(Err); | ||||
6368 | |||||
6369 | { | ||||
6370 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
6371 | if (!MaybeEntry) | ||||
6372 | return MaybeEntry.takeError(); | ||||
6373 | Entry = MaybeEntry.get(); | ||||
6374 | } | ||||
6375 | |||||
6376 | if (Entry.Kind != BitstreamEntry::SubBlock || | ||||
6377 | Entry.ID != bitc::MODULE_BLOCK_ID) | ||||
6378 | return error("Malformed block"); | ||||
6379 | } | ||||
6380 | |||||
6381 | if (Entry.ID == bitc::MODULE_BLOCK_ID) { | ||||
6382 | uint64_t ModuleBit = Stream.GetCurrentBitNo() - BCBegin * 8; | ||||
6383 | if (Error Err = Stream.SkipBlock()) | ||||
6384 | return std::move(Err); | ||||
6385 | |||||
6386 | F.Mods.push_back({Stream.getBitcodeBytes().slice( | ||||
6387 | BCBegin, Stream.getCurrentByteNo() - BCBegin), | ||||
6388 | Buffer.getBufferIdentifier(), IdentificationBit, | ||||
6389 | ModuleBit}); | ||||
6390 | continue; | ||||
6391 | } | ||||
6392 | |||||
6393 | if (Entry.ID == bitc::STRTAB_BLOCK_ID) { | ||||
6394 | Expected<StringRef> Strtab = | ||||
6395 | readBlobInRecord(Stream, bitc::STRTAB_BLOCK_ID, bitc::STRTAB_BLOB); | ||||
6396 | if (!Strtab) | ||||
6397 | return Strtab.takeError(); | ||||
6398 | // This string table is used by every preceding bitcode module that does | ||||
6399 | // not have its own string table. A bitcode file may have multiple | ||||
6400 | // string tables if it was created by binary concatenation, for example | ||||
6401 | // with "llvm-cat -b". | ||||
6402 | for (auto I = F.Mods.rbegin(), E = F.Mods.rend(); I != E; ++I) { | ||||
6403 | if (!I->Strtab.empty()) | ||||
6404 | break; | ||||
6405 | I->Strtab = *Strtab; | ||||
6406 | } | ||||
6407 | // Similarly, the string table is used by every preceding symbol table; | ||||
6408 | // normally there will be just one unless the bitcode file was created | ||||
6409 | // by binary concatenation. | ||||
6410 | if (!F.Symtab.empty() && F.StrtabForSymtab.empty()) | ||||
6411 | F.StrtabForSymtab = *Strtab; | ||||
6412 | continue; | ||||
6413 | } | ||||
6414 | |||||
6415 | if (Entry.ID == bitc::SYMTAB_BLOCK_ID) { | ||||
6416 | Expected<StringRef> SymtabOrErr = | ||||
6417 | readBlobInRecord(Stream, bitc::SYMTAB_BLOCK_ID, bitc::SYMTAB_BLOB); | ||||
6418 | if (!SymtabOrErr) | ||||
6419 | return SymtabOrErr.takeError(); | ||||
6420 | |||||
6421 | // We can expect the bitcode file to have multiple symbol tables if it | ||||
6422 | // was created by binary concatenation. In that case we silently | ||||
6423 | // ignore any subsequent symbol tables, which is fine because this is a | ||||
6424 | // low level function. The client is expected to notice that the number | ||||
6425 | // of modules in the symbol table does not match the number of modules | ||||
6426 | // in the input file and regenerate the symbol table. | ||||
6427 | if (F.Symtab.empty()) | ||||
6428 | F.Symtab = *SymtabOrErr; | ||||
6429 | continue; | ||||
6430 | } | ||||
6431 | |||||
6432 | if (Error Err = Stream.SkipBlock()) | ||||
6433 | return std::move(Err); | ||||
6434 | continue; | ||||
6435 | } | ||||
6436 | case BitstreamEntry::Record: | ||||
6437 | if (Expected<unsigned> StreamFailed = Stream.skipRecord(Entry.ID)) | ||||
6438 | continue; | ||||
6439 | else | ||||
6440 | return StreamFailed.takeError(); | ||||
6441 | } | ||||
6442 | } | ||||
6443 | } | ||||
6444 | |||||
6445 | /// Get a lazy one-at-time loading module from bitcode. | ||||
6446 | /// | ||||
6447 | /// This isn't always used in a lazy context. In particular, it's also used by | ||||
6448 | /// \a parseModule(). If this is truly lazy, then we need to eagerly pull | ||||
6449 | /// in forward-referenced functions from block address references. | ||||
6450 | /// | ||||
6451 | /// \param[in] MaterializeAll Set to \c true if we should materialize | ||||
6452 | /// everything. | ||||
6453 | Expected<std::unique_ptr<Module>> | ||||
6454 | BitcodeModule::getModuleImpl(LLVMContext &Context, bool MaterializeAll, | ||||
6455 | bool ShouldLazyLoadMetadata, bool IsImporting) { | ||||
6456 | BitstreamCursor Stream(Buffer); | ||||
6457 | |||||
6458 | std::string ProducerIdentification; | ||||
6459 | if (IdentificationBit != -1ull) { | ||||
6460 | if (Error JumpFailed = Stream.JumpToBit(IdentificationBit)) | ||||
6461 | return std::move(JumpFailed); | ||||
6462 | Expected<std::string> ProducerIdentificationOrErr = | ||||
6463 | readIdentificationBlock(Stream); | ||||
6464 | if (!ProducerIdentificationOrErr) | ||||
6465 | return ProducerIdentificationOrErr.takeError(); | ||||
6466 | |||||
6467 | ProducerIdentification = *ProducerIdentificationOrErr; | ||||
6468 | } | ||||
6469 | |||||
6470 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) | ||||
6471 | return std::move(JumpFailed); | ||||
6472 | auto *R = new BitcodeReader(std::move(Stream), Strtab, ProducerIdentification, | ||||
6473 | Context); | ||||
6474 | |||||
6475 | std::unique_ptr<Module> M = | ||||
6476 | std::make_unique<Module>(ModuleIdentifier, Context); | ||||
6477 | M->setMaterializer(R); | ||||
6478 | |||||
6479 | // Delay parsing Metadata if ShouldLazyLoadMetadata is true. | ||||
6480 | if (Error Err = | ||||
6481 | R->parseBitcodeInto(M.get(), ShouldLazyLoadMetadata, IsImporting)) | ||||
6482 | return std::move(Err); | ||||
6483 | |||||
6484 | if (MaterializeAll) { | ||||
6485 | // Read in the entire module, and destroy the BitcodeReader. | ||||
6486 | if (Error Err = M->materializeAll()) | ||||
6487 | return std::move(Err); | ||||
6488 | } else { | ||||
6489 | // Resolve forward references from blockaddresses. | ||||
6490 | if (Error Err = R->materializeForwardReferencedFunctions()) | ||||
6491 | return std::move(Err); | ||||
6492 | } | ||||
6493 | return std::move(M); | ||||
6494 | } | ||||
6495 | |||||
6496 | Expected<std::unique_ptr<Module>> | ||||
6497 | BitcodeModule::getLazyModule(LLVMContext &Context, bool ShouldLazyLoadMetadata, | ||||
6498 | bool IsImporting) { | ||||
6499 | return getModuleImpl(Context, false, ShouldLazyLoadMetadata, IsImporting); | ||||
6500 | } | ||||
6501 | |||||
6502 | // Parse the specified bitcode buffer and merge the index into CombinedIndex. | ||||
6503 | // We don't use ModuleIdentifier here because the client may need to control the | ||||
6504 | // module path used in the combined summary (e.g. when reading summaries for | ||||
6505 | // regular LTO modules). | ||||
6506 | Error BitcodeModule::readSummary(ModuleSummaryIndex &CombinedIndex, | ||||
6507 | StringRef ModulePath, uint64_t ModuleId) { | ||||
6508 | BitstreamCursor Stream(Buffer); | ||||
6509 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) | ||||
6510 | return JumpFailed; | ||||
6511 | |||||
6512 | ModuleSummaryIndexBitcodeReader R(std::move(Stream), Strtab, CombinedIndex, | ||||
6513 | ModulePath, ModuleId); | ||||
6514 | return R.parseModule(); | ||||
6515 | } | ||||
6516 | |||||
6517 | // Parse the specified bitcode buffer, returning the function info index. | ||||
6518 | Expected<std::unique_ptr<ModuleSummaryIndex>> BitcodeModule::getSummary() { | ||||
6519 | BitstreamCursor Stream(Buffer); | ||||
6520 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) | ||||
6521 | return std::move(JumpFailed); | ||||
6522 | |||||
6523 | auto Index = std::make_unique<ModuleSummaryIndex>(/*HaveGVs=*/false); | ||||
6524 | ModuleSummaryIndexBitcodeReader R(std::move(Stream), Strtab, *Index, | ||||
6525 | ModuleIdentifier, 0); | ||||
6526 | |||||
6527 | if (Error Err = R.parseModule()) | ||||
6528 | return std::move(Err); | ||||
6529 | |||||
6530 | return std::move(Index); | ||||
6531 | } | ||||
6532 | |||||
6533 | static Expected<bool> getEnableSplitLTOUnitFlag(BitstreamCursor &Stream, | ||||
6534 | unsigned ID) { | ||||
6535 | if (Error Err = Stream.EnterSubBlock(ID)) | ||||
6536 | return std::move(Err); | ||||
6537 | SmallVector<uint64_t, 64> Record; | ||||
6538 | |||||
6539 | while (true) { | ||||
6540 | Expected<BitstreamEntry> MaybeEntry = Stream.advanceSkippingSubblocks(); | ||||
6541 | if (!MaybeEntry) | ||||
6542 | return MaybeEntry.takeError(); | ||||
6543 | BitstreamEntry Entry = MaybeEntry.get(); | ||||
6544 | |||||
6545 | switch (Entry.Kind) { | ||||
6546 | case BitstreamEntry::SubBlock: // Handled for us already. | ||||
6547 | case BitstreamEntry::Error: | ||||
6548 | return error("Malformed block"); | ||||
6549 | case BitstreamEntry::EndBlock: | ||||
6550 | // If no flags record found, conservatively return true to mimic | ||||
6551 | // behavior before this flag was added. | ||||
6552 | return true; | ||||
6553 | case BitstreamEntry::Record: | ||||
6554 | // The interesting case. | ||||
6555 | break; | ||||
6556 | } | ||||
6557 | |||||
6558 | // Look for the FS_FLAGS record. | ||||
6559 | Record.clear(); | ||||
6560 | Expected<unsigned> MaybeBitCode = Stream.readRecord(Entry.ID, Record); | ||||
6561 | if (!MaybeBitCode) | ||||
6562 | return MaybeBitCode.takeError(); | ||||
6563 | switch (MaybeBitCode.get()) { | ||||
6564 | default: // Default behavior: ignore. | ||||
6565 | break; | ||||
6566 | case bitc::FS_FLAGS: { // [flags] | ||||
6567 | uint64_t Flags = Record[0]; | ||||
6568 | // Scan flags. | ||||
6569 | assert(Flags <= 0x3f && "Unexpected bits in flag")((Flags <= 0x3f && "Unexpected bits in flag") ? static_cast <void> (0) : __assert_fail ("Flags <= 0x3f && \"Unexpected bits in flag\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6569, __PRETTY_FUNCTION__)); | ||||
6570 | |||||
6571 | return Flags & 0x8; | ||||
6572 | } | ||||
6573 | } | ||||
6574 | } | ||||
6575 | llvm_unreachable("Exit infinite loop")::llvm::llvm_unreachable_internal("Exit infinite loop", "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/lib/Bitcode/Reader/BitcodeReader.cpp" , 6575); | ||||
6576 | } | ||||
6577 | |||||
6578 | // Check if the given bitcode buffer contains a global value summary block. | ||||
6579 | Expected<BitcodeLTOInfo> BitcodeModule::getLTOInfo() { | ||||
6580 | BitstreamCursor Stream(Buffer); | ||||
6581 | if (Error JumpFailed = Stream.JumpToBit(ModuleBit)) | ||||
6582 | return std::move(JumpFailed); | ||||
6583 | |||||
6584 | if (Error Err = Stream.EnterSubBlock(bitc::MODULE_BLOCK_ID)) | ||||
6585 | return std::move(Err); | ||||
6586 | |||||
6587 | while (true) { | ||||
6588 | Expected<llvm::BitstreamEntry> MaybeEntry = Stream.advance(); | ||||
6589 | if (!MaybeEntry) | ||||
6590 | return MaybeEntry.takeError(); | ||||
6591 | llvm::BitstreamEntry Entry = MaybeEntry.get(); | ||||
6592 | |||||
6593 | switch (Entry.Kind) { | ||||
6594 | case BitstreamEntry::Error: | ||||
6595 | return error("Malformed block"); | ||||
6596 | case BitstreamEntry::EndBlock: | ||||
6597 | return BitcodeLTOInfo{/*IsThinLTO=*/false, /*HasSummary=*/false, | ||||
6598 | /*EnableSplitLTOUnit=*/false}; | ||||
6599 | |||||
6600 | case BitstreamEntry::SubBlock: | ||||
6601 | if (Entry.ID == bitc::GLOBALVAL_SUMMARY_BLOCK_ID) { | ||||
6602 | Expected<bool> EnableSplitLTOUnit = | ||||
6603 | getEnableSplitLTOUnitFlag(Stream, Entry.ID); | ||||
6604 | if (!EnableSplitLTOUnit) | ||||
6605 | return EnableSplitLTOUnit.takeError(); | ||||
6606 | return BitcodeLTOInfo{/*IsThinLTO=*/true, /*HasSummary=*/true, | ||||
6607 | *EnableSplitLTOUnit}; | ||||
6608 | } | ||||
6609 | |||||
6610 | if (Entry.ID == bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID) { | ||||
6611 | Expected<bool> EnableSplitLTOUnit = | ||||
6612 | getEnableSplitLTOUnitFlag(Stream, Entry.ID); | ||||
6613 | if (!EnableSplitLTOUnit) | ||||
6614 | return EnableSplitLTOUnit.takeError(); | ||||
6615 | return BitcodeLTOInfo{/*IsThinLTO=*/false, /*HasSummary=*/true, | ||||
6616 | *EnableSplitLTOUnit}; | ||||
6617 | } | ||||
6618 | |||||
6619 | // Ignore other sub-blocks. | ||||
6620 | if (Error Err = Stream.SkipBlock()) | ||||
6621 | return std::move(Err); | ||||
6622 | continue; | ||||
6623 | |||||
6624 | case BitstreamEntry::Record: | ||||
6625 | if (Expected<unsigned> StreamFailed = Stream.skipRecord(Entry.ID)) | ||||
6626 | continue; | ||||
6627 | else | ||||
6628 | return StreamFailed.takeError(); | ||||
6629 | } | ||||
6630 | } | ||||
6631 | } | ||||
6632 | |||||
6633 | static Expected<BitcodeModule> getSingleModule(MemoryBufferRef Buffer) { | ||||
6634 | Expected<std::vector<BitcodeModule>> MsOrErr = getBitcodeModuleList(Buffer); | ||||
6635 | if (!MsOrErr) | ||||
6636 | return MsOrErr.takeError(); | ||||
6637 | |||||
6638 | if (MsOrErr->size() != 1) | ||||
6639 | return error("Expected a single module"); | ||||
6640 | |||||
6641 | return (*MsOrErr)[0]; | ||||
6642 | } | ||||
6643 | |||||
6644 | Expected<std::unique_ptr<Module>> | ||||
6645 | llvm::getLazyBitcodeModule(MemoryBufferRef Buffer, LLVMContext &Context, | ||||
6646 | bool ShouldLazyLoadMetadata, bool IsImporting) { | ||||
6647 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | ||||
6648 | if (!BM) | ||||
6649 | return BM.takeError(); | ||||
6650 | |||||
6651 | return BM->getLazyModule(Context, ShouldLazyLoadMetadata, IsImporting); | ||||
6652 | } | ||||
6653 | |||||
6654 | Expected<std::unique_ptr<Module>> llvm::getOwningLazyBitcodeModule( | ||||
6655 | std::unique_ptr<MemoryBuffer> &&Buffer, LLVMContext &Context, | ||||
6656 | bool ShouldLazyLoadMetadata, bool IsImporting) { | ||||
6657 | auto MOrErr = getLazyBitcodeModule(*Buffer, Context, ShouldLazyLoadMetadata, | ||||
6658 | IsImporting); | ||||
6659 | if (MOrErr) | ||||
6660 | (*MOrErr)->setOwnedMemoryBuffer(std::move(Buffer)); | ||||
6661 | return MOrErr; | ||||
6662 | } | ||||
6663 | |||||
6664 | Expected<std::unique_ptr<Module>> | ||||
6665 | BitcodeModule::parseModule(LLVMContext &Context) { | ||||
6666 | return getModuleImpl(Context, true, false, false); | ||||
6667 | // TODO: Restore the use-lists to the in-memory state when the bitcode was | ||||
6668 | // written. We must defer until the Module has been fully materialized. | ||||
6669 | } | ||||
6670 | |||||
6671 | Expected<std::unique_ptr<Module>> llvm::parseBitcodeFile(MemoryBufferRef Buffer, | ||||
6672 | LLVMContext &Context) { | ||||
6673 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | ||||
6674 | if (!BM) | ||||
6675 | return BM.takeError(); | ||||
6676 | |||||
6677 | return BM->parseModule(Context); | ||||
6678 | } | ||||
6679 | |||||
6680 | Expected<std::string> llvm::getBitcodeTargetTriple(MemoryBufferRef Buffer) { | ||||
6681 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); | ||||
6682 | if (!StreamOrErr) | ||||
6683 | return StreamOrErr.takeError(); | ||||
6684 | |||||
6685 | return readTriple(*StreamOrErr); | ||||
6686 | } | ||||
6687 | |||||
6688 | Expected<bool> llvm::isBitcodeContainingObjCCategory(MemoryBufferRef Buffer) { | ||||
6689 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); | ||||
6690 | if (!StreamOrErr) | ||||
6691 | return StreamOrErr.takeError(); | ||||
6692 | |||||
6693 | return hasObjCCategory(*StreamOrErr); | ||||
6694 | } | ||||
6695 | |||||
6696 | Expected<std::string> llvm::getBitcodeProducerString(MemoryBufferRef Buffer) { | ||||
6697 | Expected<BitstreamCursor> StreamOrErr = initStream(Buffer); | ||||
6698 | if (!StreamOrErr) | ||||
6699 | return StreamOrErr.takeError(); | ||||
6700 | |||||
6701 | return readIdentificationCode(*StreamOrErr); | ||||
6702 | } | ||||
6703 | |||||
6704 | Error llvm::readModuleSummaryIndex(MemoryBufferRef Buffer, | ||||
6705 | ModuleSummaryIndex &CombinedIndex, | ||||
6706 | uint64_t ModuleId) { | ||||
6707 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | ||||
6708 | if (!BM) | ||||
6709 | return BM.takeError(); | ||||
6710 | |||||
6711 | return BM->readSummary(CombinedIndex, BM->getModuleIdentifier(), ModuleId); | ||||
6712 | } | ||||
6713 | |||||
6714 | Expected<std::unique_ptr<ModuleSummaryIndex>> | ||||
6715 | llvm::getModuleSummaryIndex(MemoryBufferRef Buffer) { | ||||
6716 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | ||||
6717 | if (!BM) | ||||
6718 | return BM.takeError(); | ||||
6719 | |||||
6720 | return BM->getSummary(); | ||||
6721 | } | ||||
6722 | |||||
6723 | Expected<BitcodeLTOInfo> llvm::getBitcodeLTOInfo(MemoryBufferRef Buffer) { | ||||
6724 | Expected<BitcodeModule> BM = getSingleModule(Buffer); | ||||
6725 | if (!BM) | ||||
6726 | return BM.takeError(); | ||||
6727 | |||||
6728 | return BM->getLTOInfo(); | ||||
6729 | } | ||||
6730 | |||||
6731 | Expected<std::unique_ptr<ModuleSummaryIndex>> | ||||
6732 | llvm::getModuleSummaryIndexForFile(StringRef Path, | ||||
6733 | bool IgnoreEmptyThinLTOIndexFile) { | ||||
6734 | ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr = | ||||
6735 | MemoryBuffer::getFileOrSTDIN(Path); | ||||
6736 | if (!FileOrErr) | ||||
6737 | return errorCodeToError(FileOrErr.getError()); | ||||
6738 | if (IgnoreEmptyThinLTOIndexFile && !(*FileOrErr)->getBufferSize()) | ||||
6739 | return nullptr; | ||||
6740 | return getModuleSummaryIndex(**FileOrErr); | ||||
6741 | } |
1 | //===- llvm/Support/Error.h - Recoverable error handling --------*- C++ -*-===// |
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 | // This file defines an API used to report recoverable errors. |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #ifndef LLVM_SUPPORT_ERROR_H |
14 | #define LLVM_SUPPORT_ERROR_H |
15 | |
16 | #include "llvm-c/Error.h" |
17 | #include "llvm/ADT/STLExtras.h" |
18 | #include "llvm/ADT/SmallVector.h" |
19 | #include "llvm/ADT/StringExtras.h" |
20 | #include "llvm/ADT/Twine.h" |
21 | #include "llvm/Config/abi-breaking.h" |
22 | #include "llvm/Support/AlignOf.h" |
23 | #include "llvm/Support/Compiler.h" |
24 | #include "llvm/Support/Debug.h" |
25 | #include "llvm/Support/ErrorHandling.h" |
26 | #include "llvm/Support/ErrorOr.h" |
27 | #include "llvm/Support/Format.h" |
28 | #include "llvm/Support/raw_ostream.h" |
29 | #include <algorithm> |
30 | #include <cassert> |
31 | #include <cstdint> |
32 | #include <cstdlib> |
33 | #include <functional> |
34 | #include <memory> |
35 | #include <new> |
36 | #include <string> |
37 | #include <system_error> |
38 | #include <type_traits> |
39 | #include <utility> |
40 | #include <vector> |
41 | |
42 | namespace llvm { |
43 | |
44 | class ErrorSuccess; |
45 | |
46 | /// Base class for error info classes. Do not extend this directly: Extend |
47 | /// the ErrorInfo template subclass instead. |
48 | class ErrorInfoBase { |
49 | public: |
50 | virtual ~ErrorInfoBase() = default; |
51 | |
52 | /// Print an error message to an output stream. |
53 | virtual void log(raw_ostream &OS) const = 0; |
54 | |
55 | /// Return the error message as a string. |
56 | virtual std::string message() const { |
57 | std::string Msg; |
58 | raw_string_ostream OS(Msg); |
59 | log(OS); |
60 | return OS.str(); |
61 | } |
62 | |
63 | /// Convert this error to a std::error_code. |
64 | /// |
65 | /// This is a temporary crutch to enable interaction with code still |
66 | /// using std::error_code. It will be removed in the future. |
67 | virtual std::error_code convertToErrorCode() const = 0; |
68 | |
69 | // Returns the class ID for this type. |
70 | static const void *classID() { return &ID; } |
71 | |
72 | // Returns the class ID for the dynamic type of this ErrorInfoBase instance. |
73 | virtual const void *dynamicClassID() const = 0; |
74 | |
75 | // Check whether this instance is a subclass of the class identified by |
76 | // ClassID. |
77 | virtual bool isA(const void *const ClassID) const { |
78 | return ClassID == classID(); |
79 | } |
80 | |
81 | // Check whether this instance is a subclass of ErrorInfoT. |
82 | template <typename ErrorInfoT> bool isA() const { |
83 | return isA(ErrorInfoT::classID()); |
84 | } |
85 | |
86 | private: |
87 | virtual void anchor(); |
88 | |
89 | static char ID; |
90 | }; |
91 | |
92 | /// Lightweight error class with error context and mandatory checking. |
93 | /// |
94 | /// Instances of this class wrap a ErrorInfoBase pointer. Failure states |
95 | /// are represented by setting the pointer to a ErrorInfoBase subclass |
96 | /// instance containing information describing the failure. Success is |
97 | /// represented by a null pointer value. |
98 | /// |
99 | /// Instances of Error also contains a 'Checked' flag, which must be set |
100 | /// before the destructor is called, otherwise the destructor will trigger a |
101 | /// runtime error. This enforces at runtime the requirement that all Error |
102 | /// instances be checked or returned to the caller. |
103 | /// |
104 | /// There are two ways to set the checked flag, depending on what state the |
105 | /// Error instance is in. For Error instances indicating success, it |
106 | /// is sufficient to invoke the boolean conversion operator. E.g.: |
107 | /// |
108 | /// @code{.cpp} |
109 | /// Error foo(<...>); |
110 | /// |
111 | /// if (auto E = foo(<...>)) |
112 | /// return E; // <- Return E if it is in the error state. |
113 | /// // We have verified that E was in the success state. It can now be safely |
114 | /// // destroyed. |
115 | /// @endcode |
116 | /// |
117 | /// A success value *can not* be dropped. For example, just calling 'foo(<...>)' |
118 | /// without testing the return value will raise a runtime error, even if foo |
119 | /// returns success. |
120 | /// |
121 | /// For Error instances representing failure, you must use either the |
122 | /// handleErrors or handleAllErrors function with a typed handler. E.g.: |
123 | /// |
124 | /// @code{.cpp} |
125 | /// class MyErrorInfo : public ErrorInfo<MyErrorInfo> { |
126 | /// // Custom error info. |
127 | /// }; |
128 | /// |
129 | /// Error foo(<...>) { return make_error<MyErrorInfo>(...); } |
130 | /// |
131 | /// auto E = foo(<...>); // <- foo returns failure with MyErrorInfo. |
132 | /// auto NewE = |
133 | /// handleErrors(E, |
134 | /// [](const MyErrorInfo &M) { |
135 | /// // Deal with the error. |
136 | /// }, |
137 | /// [](std::unique_ptr<OtherError> M) -> Error { |
138 | /// if (canHandle(*M)) { |
139 | /// // handle error. |
140 | /// return Error::success(); |
141 | /// } |
142 | /// // Couldn't handle this error instance. Pass it up the stack. |
143 | /// return Error(std::move(M)); |
144 | /// ); |
145 | /// // Note - we must check or return NewE in case any of the handlers |
146 | /// // returned a new error. |
147 | /// @endcode |
148 | /// |
149 | /// The handleAllErrors function is identical to handleErrors, except |
150 | /// that it has a void return type, and requires all errors to be handled and |
151 | /// no new errors be returned. It prevents errors (assuming they can all be |
152 | /// handled) from having to be bubbled all the way to the top-level. |
153 | /// |
154 | /// *All* Error instances must be checked before destruction, even if |
155 | /// they're moved-assigned or constructed from Success values that have already |
156 | /// been checked. This enforces checking through all levels of the call stack. |
157 | class LLVM_NODISCARD[[clang::warn_unused_result]] Error { |
158 | // ErrorList needs to be able to yank ErrorInfoBase pointers out of Errors |
159 | // to add to the error list. It can't rely on handleErrors for this, since |
160 | // handleErrors does not support ErrorList handlers. |
161 | friend class ErrorList; |
162 | |
163 | // handleErrors needs to be able to set the Checked flag. |
164 | template <typename... HandlerTs> |
165 | friend Error handleErrors(Error E, HandlerTs &&... Handlers); |
166 | |
167 | // Expected<T> needs to be able to steal the payload when constructed from an |
168 | // error. |
169 | template <typename T> friend class Expected; |
170 | |
171 | // wrap needs to be able to steal the payload. |
172 | friend LLVMErrorRef wrap(Error); |
173 | |
174 | protected: |
175 | /// Create a success value. Prefer using 'Error::success()' for readability |
176 | Error() { |
177 | setPtr(nullptr); |
178 | setChecked(false); |
179 | } |
180 | |
181 | public: |
182 | /// Create a success value. |
183 | static ErrorSuccess success(); |
184 | |
185 | // Errors are not copy-constructable. |
186 | Error(const Error &Other) = delete; |
187 | |
188 | /// Move-construct an error value. The newly constructed error is considered |
189 | /// unchecked, even if the source error had been checked. The original error |
190 | /// becomes a checked Success value, regardless of its original state. |
191 | Error(Error &&Other) { |
192 | setChecked(true); |
193 | *this = std::move(Other); |
194 | } |
195 | |
196 | /// Create an error value. Prefer using the 'make_error' function, but |
197 | /// this constructor can be useful when "re-throwing" errors from handlers. |
198 | Error(std::unique_ptr<ErrorInfoBase> Payload) { |
199 | setPtr(Payload.release()); |
200 | setChecked(false); |
201 | } |
202 | |
203 | // Errors are not copy-assignable. |
204 | Error &operator=(const Error &Other) = delete; |
205 | |
206 | /// Move-assign an error value. The current error must represent success, you |
207 | /// you cannot overwrite an unhandled error. The current error is then |
208 | /// considered unchecked. The source error becomes a checked success value, |
209 | /// regardless of its original state. |
210 | Error &operator=(Error &&Other) { |
211 | // Don't allow overwriting of unchecked values. |
212 | assertIsChecked(); |
213 | setPtr(Other.getPtr()); |
214 | |
215 | // This Error is unchecked, even if the source error was checked. |
216 | setChecked(false); |
217 | |
218 | // Null out Other's payload and set its checked bit. |
219 | Other.setPtr(nullptr); |
220 | Other.setChecked(true); |
221 | |
222 | return *this; |
223 | } |
224 | |
225 | /// Destroy a Error. Fails with a call to abort() if the error is |
226 | /// unchecked. |
227 | ~Error() { |
228 | assertIsChecked(); |
229 | delete getPtr(); |
230 | } |
231 | |
232 | /// Bool conversion. Returns true if this Error is in a failure state, |
233 | /// and false if it is in an accept state. If the error is in a Success state |
234 | /// it will be considered checked. |
235 | explicit operator bool() { |
236 | setChecked(getPtr() == nullptr); |
237 | return getPtr() != nullptr; |
238 | } |
239 | |
240 | /// Check whether one error is a subclass of another. |
241 | template <typename ErrT> bool isA() const { |
242 | return getPtr() && getPtr()->isA(ErrT::classID()); |
243 | } |
244 | |
245 | /// Returns the dynamic class id of this error, or null if this is a success |
246 | /// value. |
247 | const void* dynamicClassID() const { |
248 | if (!getPtr()) |
249 | return nullptr; |
250 | return getPtr()->dynamicClassID(); |
251 | } |
252 | |
253 | private: |
254 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
255 | // assertIsChecked() happens very frequently, but under normal circumstances |
256 | // is supposed to be a no-op. So we want it to be inlined, but having a bunch |
257 | // of debug prints can cause the function to be too large for inlining. So |
258 | // it's important that we define this function out of line so that it can't be |
259 | // inlined. |
260 | LLVM_ATTRIBUTE_NORETURN__attribute__((noreturn)) |
261 | void fatalUncheckedError() const; |
262 | #endif |
263 | |
264 | void assertIsChecked() { |
265 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
266 | if (LLVM_UNLIKELY(!getChecked() || getPtr())__builtin_expect((bool)(!getChecked() || getPtr()), false)) |
267 | fatalUncheckedError(); |
268 | #endif |
269 | } |
270 | |
271 | ErrorInfoBase *getPtr() const { |
272 | return reinterpret_cast<ErrorInfoBase*>( |
273 | reinterpret_cast<uintptr_t>(Payload) & |
274 | ~static_cast<uintptr_t>(0x1)); |
275 | } |
276 | |
277 | void setPtr(ErrorInfoBase *EI) { |
278 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
279 | Payload = reinterpret_cast<ErrorInfoBase*>( |
280 | (reinterpret_cast<uintptr_t>(EI) & |
281 | ~static_cast<uintptr_t>(0x1)) | |
282 | (reinterpret_cast<uintptr_t>(Payload) & 0x1)); |
283 | #else |
284 | Payload = EI; |
285 | #endif |
286 | } |
287 | |
288 | bool getChecked() const { |
289 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
290 | return (reinterpret_cast<uintptr_t>(Payload) & 0x1) == 0; |
291 | #else |
292 | return true; |
293 | #endif |
294 | } |
295 | |
296 | void setChecked(bool V) { |
297 | Payload = reinterpret_cast<ErrorInfoBase*>( |
298 | (reinterpret_cast<uintptr_t>(Payload) & |
299 | ~static_cast<uintptr_t>(0x1)) | |
300 | (V ? 0 : 1)); |
301 | } |
302 | |
303 | std::unique_ptr<ErrorInfoBase> takePayload() { |
304 | std::unique_ptr<ErrorInfoBase> Tmp(getPtr()); |
305 | setPtr(nullptr); |
306 | setChecked(true); |
307 | return Tmp; |
308 | } |
309 | |
310 | friend raw_ostream &operator<<(raw_ostream &OS, const Error &E) { |
311 | if (auto P = E.getPtr()) |
312 | P->log(OS); |
313 | else |
314 | OS << "success"; |
315 | return OS; |
316 | } |
317 | |
318 | ErrorInfoBase *Payload = nullptr; |
319 | }; |
320 | |
321 | /// Subclass of Error for the sole purpose of identifying the success path in |
322 | /// the type system. This allows to catch invalid conversion to Expected<T> at |
323 | /// compile time. |
324 | class ErrorSuccess final : public Error {}; |
325 | |
326 | inline ErrorSuccess Error::success() { return ErrorSuccess(); } |
327 | |
328 | /// Make a Error instance representing failure using the given error info |
329 | /// type. |
330 | template <typename ErrT, typename... ArgTs> Error make_error(ArgTs &&... Args) { |
331 | return Error(std::make_unique<ErrT>(std::forward<ArgTs>(Args)...)); |
332 | } |
333 | |
334 | /// Base class for user error types. Users should declare their error types |
335 | /// like: |
336 | /// |
337 | /// class MyError : public ErrorInfo<MyError> { |
338 | /// .... |
339 | /// }; |
340 | /// |
341 | /// This class provides an implementation of the ErrorInfoBase::kind |
342 | /// method, which is used by the Error RTTI system. |
343 | template <typename ThisErrT, typename ParentErrT = ErrorInfoBase> |
344 | class ErrorInfo : public ParentErrT { |
345 | public: |
346 | using ParentErrT::ParentErrT; // inherit constructors |
347 | |
348 | static const void *classID() { return &ThisErrT::ID; } |
349 | |
350 | const void *dynamicClassID() const override { return &ThisErrT::ID; } |
351 | |
352 | bool isA(const void *const ClassID) const override { |
353 | return ClassID == classID() || ParentErrT::isA(ClassID); |
354 | } |
355 | }; |
356 | |
357 | /// Special ErrorInfo subclass representing a list of ErrorInfos. |
358 | /// Instances of this class are constructed by joinError. |
359 | class ErrorList final : public ErrorInfo<ErrorList> { |
360 | // handleErrors needs to be able to iterate the payload list of an |
361 | // ErrorList. |
362 | template <typename... HandlerTs> |
363 | friend Error handleErrors(Error E, HandlerTs &&... Handlers); |
364 | |
365 | // joinErrors is implemented in terms of join. |
366 | friend Error joinErrors(Error, Error); |
367 | |
368 | public: |
369 | void log(raw_ostream &OS) const override { |
370 | OS << "Multiple errors:\n"; |
371 | for (auto &ErrPayload : Payloads) { |
372 | ErrPayload->log(OS); |
373 | OS << "\n"; |
374 | } |
375 | } |
376 | |
377 | std::error_code convertToErrorCode() const override; |
378 | |
379 | // Used by ErrorInfo::classID. |
380 | static char ID; |
381 | |
382 | private: |
383 | ErrorList(std::unique_ptr<ErrorInfoBase> Payload1, |
384 | std::unique_ptr<ErrorInfoBase> Payload2) { |
385 | assert(!Payload1->isA<ErrorList>() && !Payload2->isA<ErrorList>() &&((!Payload1->isA<ErrorList>() && !Payload2-> isA<ErrorList>() && "ErrorList constructor payloads should be singleton errors" ) ? static_cast<void> (0) : __assert_fail ("!Payload1->isA<ErrorList>() && !Payload2->isA<ErrorList>() && \"ErrorList constructor payloads should be singleton errors\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 386, __PRETTY_FUNCTION__)) |
386 | "ErrorList constructor payloads should be singleton errors")((!Payload1->isA<ErrorList>() && !Payload2-> isA<ErrorList>() && "ErrorList constructor payloads should be singleton errors" ) ? static_cast<void> (0) : __assert_fail ("!Payload1->isA<ErrorList>() && !Payload2->isA<ErrorList>() && \"ErrorList constructor payloads should be singleton errors\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 386, __PRETTY_FUNCTION__)); |
387 | Payloads.push_back(std::move(Payload1)); |
388 | Payloads.push_back(std::move(Payload2)); |
389 | } |
390 | |
391 | static Error join(Error E1, Error E2) { |
392 | if (!E1) |
393 | return E2; |
394 | if (!E2) |
395 | return E1; |
396 | if (E1.isA<ErrorList>()) { |
397 | auto &E1List = static_cast<ErrorList &>(*E1.getPtr()); |
398 | if (E2.isA<ErrorList>()) { |
399 | auto E2Payload = E2.takePayload(); |
400 | auto &E2List = static_cast<ErrorList &>(*E2Payload); |
401 | for (auto &Payload : E2List.Payloads) |
402 | E1List.Payloads.push_back(std::move(Payload)); |
403 | } else |
404 | E1List.Payloads.push_back(E2.takePayload()); |
405 | |
406 | return E1; |
407 | } |
408 | if (E2.isA<ErrorList>()) { |
409 | auto &E2List = static_cast<ErrorList &>(*E2.getPtr()); |
410 | E2List.Payloads.insert(E2List.Payloads.begin(), E1.takePayload()); |
411 | return E2; |
412 | } |
413 | return Error(std::unique_ptr<ErrorList>( |
414 | new ErrorList(E1.takePayload(), E2.takePayload()))); |
415 | } |
416 | |
417 | std::vector<std::unique_ptr<ErrorInfoBase>> Payloads; |
418 | }; |
419 | |
420 | /// Concatenate errors. The resulting Error is unchecked, and contains the |
421 | /// ErrorInfo(s), if any, contained in E1, followed by the |
422 | /// ErrorInfo(s), if any, contained in E2. |
423 | inline Error joinErrors(Error E1, Error E2) { |
424 | return ErrorList::join(std::move(E1), std::move(E2)); |
425 | } |
426 | |
427 | /// Tagged union holding either a T or a Error. |
428 | /// |
429 | /// This class parallels ErrorOr, but replaces error_code with Error. Since |
430 | /// Error cannot be copied, this class replaces getError() with |
431 | /// takeError(). It also adds an bool errorIsA<ErrT>() method for testing the |
432 | /// error class type. |
433 | template <class T> class LLVM_NODISCARD[[clang::warn_unused_result]] Expected { |
434 | template <class T1> friend class ExpectedAsOutParameter; |
435 | template <class OtherT> friend class Expected; |
436 | |
437 | static const bool isRef = std::is_reference<T>::value; |
438 | |
439 | using wrap = std::reference_wrapper<typename std::remove_reference<T>::type>; |
440 | |
441 | using error_type = std::unique_ptr<ErrorInfoBase>; |
442 | |
443 | public: |
444 | using storage_type = typename std::conditional<isRef, wrap, T>::type; |
445 | using value_type = T; |
446 | |
447 | private: |
448 | using reference = typename std::remove_reference<T>::type &; |
449 | using const_reference = const typename std::remove_reference<T>::type &; |
450 | using pointer = typename std::remove_reference<T>::type *; |
451 | using const_pointer = const typename std::remove_reference<T>::type *; |
452 | |
453 | public: |
454 | /// Create an Expected<T> error value from the given Error. |
455 | Expected(Error Err) |
456 | : HasError(true) |
457 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
458 | // Expected is unchecked upon construction in Debug builds. |
459 | , Unchecked(true) |
460 | #endif |
461 | { |
462 | assert(Err && "Cannot create Expected<T> from Error success value.")((Err && "Cannot create Expected<T> from Error success value." ) ? static_cast<void> (0) : __assert_fail ("Err && \"Cannot create Expected<T> from Error success value.\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 462, __PRETTY_FUNCTION__)); |
463 | new (getErrorStorage()) error_type(Err.takePayload()); |
464 | } |
465 | |
466 | /// Forbid to convert from Error::success() implicitly, this avoids having |
467 | /// Expected<T> foo() { return Error::success(); } which compiles otherwise |
468 | /// but triggers the assertion above. |
469 | Expected(ErrorSuccess) = delete; |
470 | |
471 | /// Create an Expected<T> success value from the given OtherT value, which |
472 | /// must be convertible to T. |
473 | template <typename OtherT> |
474 | Expected(OtherT &&Val, |
475 | typename std::enable_if<std::is_convertible<OtherT, T>::value>::type |
476 | * = nullptr) |
477 | : HasError(false) |
478 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
479 | // Expected is unchecked upon construction in Debug builds. |
480 | , Unchecked(true) |
481 | #endif |
482 | { |
483 | new (getStorage()) storage_type(std::forward<OtherT>(Val)); |
484 | } |
485 | |
486 | /// Move construct an Expected<T> value. |
487 | Expected(Expected &&Other) { moveConstruct(std::move(Other)); } |
488 | |
489 | /// Move construct an Expected<T> value from an Expected<OtherT>, where OtherT |
490 | /// must be convertible to T. |
491 | template <class OtherT> |
492 | Expected(Expected<OtherT> &&Other, |
493 | typename std::enable_if<std::is_convertible<OtherT, T>::value>::type |
494 | * = nullptr) { |
495 | moveConstruct(std::move(Other)); |
496 | } |
497 | |
498 | /// Move construct an Expected<T> value from an Expected<OtherT>, where OtherT |
499 | /// isn't convertible to T. |
500 | template <class OtherT> |
501 | explicit Expected( |
502 | Expected<OtherT> &&Other, |
503 | typename std::enable_if<!std::is_convertible<OtherT, T>::value>::type * = |
504 | nullptr) { |
505 | moveConstruct(std::move(Other)); |
506 | } |
507 | |
508 | /// Move-assign from another Expected<T>. |
509 | Expected &operator=(Expected &&Other) { |
510 | moveAssign(std::move(Other)); |
511 | return *this; |
512 | } |
513 | |
514 | /// Destroy an Expected<T>. |
515 | ~Expected() { |
516 | assertIsChecked(); |
517 | if (!HasError) |
518 | getStorage()->~storage_type(); |
519 | else |
520 | getErrorStorage()->~error_type(); |
521 | } |
522 | |
523 | /// Return false if there is an error. |
524 | explicit operator bool() { |
525 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
526 | Unchecked = HasError; |
527 | #endif |
528 | return !HasError; |
529 | } |
530 | |
531 | /// Returns a reference to the stored T value. |
532 | reference get() { |
533 | assertIsChecked(); |
534 | return *getStorage(); |
535 | } |
536 | |
537 | /// Returns a const reference to the stored T value. |
538 | const_reference get() const { |
539 | assertIsChecked(); |
540 | return const_cast<Expected<T> *>(this)->get(); |
541 | } |
542 | |
543 | /// Check that this Expected<T> is an error of type ErrT. |
544 | template <typename ErrT> bool errorIsA() const { |
545 | return HasError && (*getErrorStorage())->template isA<ErrT>(); |
546 | } |
547 | |
548 | /// Take ownership of the stored error. |
549 | /// After calling this the Expected<T> is in an indeterminate state that can |
550 | /// only be safely destructed. No further calls (beside the destructor) should |
551 | /// be made on the Expected<T> value. |
552 | Error takeError() { |
553 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
554 | Unchecked = false; |
555 | #endif |
556 | return HasError ? Error(std::move(*getErrorStorage())) : Error::success(); |
557 | } |
558 | |
559 | /// Returns a pointer to the stored T value. |
560 | pointer operator->() { |
561 | assertIsChecked(); |
562 | return toPointer(getStorage()); |
563 | } |
564 | |
565 | /// Returns a const pointer to the stored T value. |
566 | const_pointer operator->() const { |
567 | assertIsChecked(); |
568 | return toPointer(getStorage()); |
569 | } |
570 | |
571 | /// Returns a reference to the stored T value. |
572 | reference operator*() { |
573 | assertIsChecked(); |
574 | return *getStorage(); |
575 | } |
576 | |
577 | /// Returns a const reference to the stored T value. |
578 | const_reference operator*() const { |
579 | assertIsChecked(); |
580 | return *getStorage(); |
581 | } |
582 | |
583 | private: |
584 | template <class T1> |
585 | static bool compareThisIfSameType(const T1 &a, const T1 &b) { |
586 | return &a == &b; |
587 | } |
588 | |
589 | template <class T1, class T2> |
590 | static bool compareThisIfSameType(const T1 &a, const T2 &b) { |
591 | return false; |
592 | } |
593 | |
594 | template <class OtherT> void moveConstruct(Expected<OtherT> &&Other) { |
595 | HasError = Other.HasError; |
596 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
597 | Unchecked = true; |
598 | Other.Unchecked = false; |
599 | #endif |
600 | |
601 | if (!HasError) |
602 | new (getStorage()) storage_type(std::move(*Other.getStorage())); |
603 | else |
604 | new (getErrorStorage()) error_type(std::move(*Other.getErrorStorage())); |
605 | } |
606 | |
607 | template <class OtherT> void moveAssign(Expected<OtherT> &&Other) { |
608 | assertIsChecked(); |
609 | |
610 | if (compareThisIfSameType(*this, Other)) |
611 | return; |
612 | |
613 | this->~Expected(); |
614 | new (this) Expected(std::move(Other)); |
615 | } |
616 | |
617 | pointer toPointer(pointer Val) { return Val; } |
618 | |
619 | const_pointer toPointer(const_pointer Val) const { return Val; } |
620 | |
621 | pointer toPointer(wrap *Val) { return &Val->get(); } |
622 | |
623 | const_pointer toPointer(const wrap *Val) const { return &Val->get(); } |
624 | |
625 | storage_type *getStorage() { |
626 | assert(!HasError && "Cannot get value when an error exists!")((!HasError && "Cannot get value when an error exists!" ) ? static_cast<void> (0) : __assert_fail ("!HasError && \"Cannot get value when an error exists!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 626, __PRETTY_FUNCTION__)); |
627 | return reinterpret_cast<storage_type *>(TStorage.buffer); |
628 | } |
629 | |
630 | const storage_type *getStorage() const { |
631 | assert(!HasError && "Cannot get value when an error exists!")((!HasError && "Cannot get value when an error exists!" ) ? static_cast<void> (0) : __assert_fail ("!HasError && \"Cannot get value when an error exists!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 631, __PRETTY_FUNCTION__)); |
632 | return reinterpret_cast<const storage_type *>(TStorage.buffer); |
633 | } |
634 | |
635 | error_type *getErrorStorage() { |
636 | assert(HasError && "Cannot get error when a value exists!")((HasError && "Cannot get error when a value exists!" ) ? static_cast<void> (0) : __assert_fail ("HasError && \"Cannot get error when a value exists!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 636, __PRETTY_FUNCTION__)); |
637 | return reinterpret_cast<error_type *>(ErrorStorage.buffer); |
638 | } |
639 | |
640 | const error_type *getErrorStorage() const { |
641 | assert(HasError && "Cannot get error when a value exists!")((HasError && "Cannot get error when a value exists!" ) ? static_cast<void> (0) : __assert_fail ("HasError && \"Cannot get error when a value exists!\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 641, __PRETTY_FUNCTION__)); |
642 | return reinterpret_cast<const error_type *>(ErrorStorage.buffer); |
643 | } |
644 | |
645 | // Used by ExpectedAsOutParameter to reset the checked flag. |
646 | void setUnchecked() { |
647 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
648 | Unchecked = true; |
649 | #endif |
650 | } |
651 | |
652 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
653 | LLVM_ATTRIBUTE_NORETURN__attribute__((noreturn)) |
654 | LLVM_ATTRIBUTE_NOINLINE__attribute__((noinline)) |
655 | void fatalUncheckedExpected() const { |
656 | dbgs() << "Expected<T> must be checked before access or destruction.\n"; |
657 | if (HasError) { |
658 | dbgs() << "Unchecked Expected<T> contained error:\n"; |
659 | (*getErrorStorage())->log(dbgs()); |
660 | } else |
661 | dbgs() << "Expected<T> value was in success state. (Note: Expected<T> " |
662 | "values in success mode must still be checked prior to being " |
663 | "destroyed).\n"; |
664 | abort(); |
665 | } |
666 | #endif |
667 | |
668 | void assertIsChecked() { |
669 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
670 | if (LLVM_UNLIKELY(Unchecked)__builtin_expect((bool)(Unchecked), false)) |
671 | fatalUncheckedExpected(); |
672 | #endif |
673 | } |
674 | |
675 | union { |
676 | AlignedCharArrayUnion<storage_type> TStorage; |
677 | AlignedCharArrayUnion<error_type> ErrorStorage; |
678 | }; |
679 | bool HasError : 1; |
680 | #if LLVM_ENABLE_ABI_BREAKING_CHECKS1 |
681 | bool Unchecked : 1; |
682 | #endif |
683 | }; |
684 | |
685 | /// Report a serious error, calling any installed error handler. See |
686 | /// ErrorHandling.h. |
687 | LLVM_ATTRIBUTE_NORETURN__attribute__((noreturn)) void report_fatal_error(Error Err, |
688 | bool gen_crash_diag = true); |
689 | |
690 | /// Report a fatal error if Err is a failure value. |
691 | /// |
692 | /// This function can be used to wrap calls to fallible functions ONLY when it |
693 | /// is known that the Error will always be a success value. E.g. |
694 | /// |
695 | /// @code{.cpp} |
696 | /// // foo only attempts the fallible operation if DoFallibleOperation is |
697 | /// // true. If DoFallibleOperation is false then foo always returns |
698 | /// // Error::success(). |
699 | /// Error foo(bool DoFallibleOperation); |
700 | /// |
701 | /// cantFail(foo(false)); |
702 | /// @endcode |
703 | inline void cantFail(Error Err, const char *Msg = nullptr) { |
704 | if (Err) { |
705 | if (!Msg) |
706 | Msg = "Failure value returned from cantFail wrapped call"; |
707 | #ifndef NDEBUG |
708 | std::string Str; |
709 | raw_string_ostream OS(Str); |
710 | OS << Msg << "\n" << Err; |
711 | Msg = OS.str().c_str(); |
712 | #endif |
713 | llvm_unreachable(Msg)::llvm::llvm_unreachable_internal(Msg, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 713); |
714 | } |
715 | } |
716 | |
717 | /// Report a fatal error if ValOrErr is a failure value, otherwise unwraps and |
718 | /// returns the contained value. |
719 | /// |
720 | /// This function can be used to wrap calls to fallible functions ONLY when it |
721 | /// is known that the Error will always be a success value. E.g. |
722 | /// |
723 | /// @code{.cpp} |
724 | /// // foo only attempts the fallible operation if DoFallibleOperation is |
725 | /// // true. If DoFallibleOperation is false then foo always returns an int. |
726 | /// Expected<int> foo(bool DoFallibleOperation); |
727 | /// |
728 | /// int X = cantFail(foo(false)); |
729 | /// @endcode |
730 | template <typename T> |
731 | T cantFail(Expected<T> ValOrErr, const char *Msg = nullptr) { |
732 | if (ValOrErr) |
733 | return std::move(*ValOrErr); |
734 | else { |
735 | if (!Msg) |
736 | Msg = "Failure value returned from cantFail wrapped call"; |
737 | #ifndef NDEBUG |
738 | std::string Str; |
739 | raw_string_ostream OS(Str); |
740 | auto E = ValOrErr.takeError(); |
741 | OS << Msg << "\n" << E; |
742 | Msg = OS.str().c_str(); |
743 | #endif |
744 | llvm_unreachable(Msg)::llvm::llvm_unreachable_internal(Msg, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 744); |
745 | } |
746 | } |
747 | |
748 | /// Report a fatal error if ValOrErr is a failure value, otherwise unwraps and |
749 | /// returns the contained reference. |
750 | /// |
751 | /// This function can be used to wrap calls to fallible functions ONLY when it |
752 | /// is known that the Error will always be a success value. E.g. |
753 | /// |
754 | /// @code{.cpp} |
755 | /// // foo only attempts the fallible operation if DoFallibleOperation is |
756 | /// // true. If DoFallibleOperation is false then foo always returns a Bar&. |
757 | /// Expected<Bar&> foo(bool DoFallibleOperation); |
758 | /// |
759 | /// Bar &X = cantFail(foo(false)); |
760 | /// @endcode |
761 | template <typename T> |
762 | T& cantFail(Expected<T&> ValOrErr, const char *Msg = nullptr) { |
763 | if (ValOrErr) |
764 | return *ValOrErr; |
765 | else { |
766 | if (!Msg) |
767 | Msg = "Failure value returned from cantFail wrapped call"; |
768 | #ifndef NDEBUG |
769 | std::string Str; |
770 | raw_string_ostream OS(Str); |
771 | auto E = ValOrErr.takeError(); |
772 | OS << Msg << "\n" << E; |
773 | Msg = OS.str().c_str(); |
774 | #endif |
775 | llvm_unreachable(Msg)::llvm::llvm_unreachable_internal(Msg, "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 775); |
776 | } |
777 | } |
778 | |
779 | /// Helper for testing applicability of, and applying, handlers for |
780 | /// ErrorInfo types. |
781 | template <typename HandlerT> |
782 | class ErrorHandlerTraits |
783 | : public ErrorHandlerTraits<decltype( |
784 | &std::remove_reference<HandlerT>::type::operator())> {}; |
785 | |
786 | // Specialization functions of the form 'Error (const ErrT&)'. |
787 | template <typename ErrT> class ErrorHandlerTraits<Error (&)(ErrT &)> { |
788 | public: |
789 | static bool appliesTo(const ErrorInfoBase &E) { |
790 | return E.template isA<ErrT>(); |
791 | } |
792 | |
793 | template <typename HandlerT> |
794 | static Error apply(HandlerT &&H, std::unique_ptr<ErrorInfoBase> E) { |
795 | assert(appliesTo(*E) && "Applying incorrect handler")((appliesTo(*E) && "Applying incorrect handler") ? static_cast <void> (0) : __assert_fail ("appliesTo(*E) && \"Applying incorrect handler\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 795, __PRETTY_FUNCTION__)); |
796 | return H(static_cast<ErrT &>(*E)); |
797 | } |
798 | }; |
799 | |
800 | // Specialization functions of the form 'void (const ErrT&)'. |
801 | template <typename ErrT> class ErrorHandlerTraits<void (&)(ErrT &)> { |
802 | public: |
803 | static bool appliesTo(const ErrorInfoBase &E) { |
804 | return E.template isA<ErrT>(); |
805 | } |
806 | |
807 | template <typename HandlerT> |
808 | static Error apply(HandlerT &&H, std::unique_ptr<ErrorInfoBase> E) { |
809 | assert(appliesTo(*E) && "Applying incorrect handler")((appliesTo(*E) && "Applying incorrect handler") ? static_cast <void> (0) : __assert_fail ("appliesTo(*E) && \"Applying incorrect handler\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 809, __PRETTY_FUNCTION__)); |
810 | H(static_cast<ErrT &>(*E)); |
811 | return Error::success(); |
812 | } |
813 | }; |
814 | |
815 | /// Specialization for functions of the form 'Error (std::unique_ptr<ErrT>)'. |
816 | template <typename ErrT> |
817 | class ErrorHandlerTraits<Error (&)(std::unique_ptr<ErrT>)> { |
818 | public: |
819 | static bool appliesTo(const ErrorInfoBase &E) { |
820 | return E.template isA<ErrT>(); |
821 | } |
822 | |
823 | template <typename HandlerT> |
824 | static Error apply(HandlerT &&H, std::unique_ptr<ErrorInfoBase> E) { |
825 | assert(appliesTo(*E) && "Applying incorrect handler")((appliesTo(*E) && "Applying incorrect handler") ? static_cast <void> (0) : __assert_fail ("appliesTo(*E) && \"Applying incorrect handler\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 825, __PRETTY_FUNCTION__)); |
826 | std::unique_ptr<ErrT> SubE(static_cast<ErrT *>(E.release())); |
827 | return H(std::move(SubE)); |
828 | } |
829 | }; |
830 | |
831 | /// Specialization for functions of the form 'void (std::unique_ptr<ErrT>)'. |
832 | template <typename ErrT> |
833 | class ErrorHandlerTraits<void (&)(std::unique_ptr<ErrT>)> { |
834 | public: |
835 | static bool appliesTo(const ErrorInfoBase &E) { |
836 | return E.template isA<ErrT>(); |
837 | } |
838 | |
839 | template <typename HandlerT> |
840 | static Error apply(HandlerT &&H, std::unique_ptr<ErrorInfoBase> E) { |
841 | assert(appliesTo(*E) && "Applying incorrect handler")((appliesTo(*E) && "Applying incorrect handler") ? static_cast <void> (0) : __assert_fail ("appliesTo(*E) && \"Applying incorrect handler\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 841, __PRETTY_FUNCTION__)); |
842 | std::unique_ptr<ErrT> SubE(static_cast<ErrT *>(E.release())); |
843 | H(std::move(SubE)); |
844 | return Error::success(); |
845 | } |
846 | }; |
847 | |
848 | // Specialization for member functions of the form 'RetT (const ErrT&)'. |
849 | template <typename C, typename RetT, typename ErrT> |
850 | class ErrorHandlerTraits<RetT (C::*)(ErrT &)> |
851 | : public ErrorHandlerTraits<RetT (&)(ErrT &)> {}; |
852 | |
853 | // Specialization for member functions of the form 'RetT (const ErrT&) const'. |
854 | template <typename C, typename RetT, typename ErrT> |
855 | class ErrorHandlerTraits<RetT (C::*)(ErrT &) const> |
856 | : public ErrorHandlerTraits<RetT (&)(ErrT &)> {}; |
857 | |
858 | // Specialization for member functions of the form 'RetT (const ErrT&)'. |
859 | template <typename C, typename RetT, typename ErrT> |
860 | class ErrorHandlerTraits<RetT (C::*)(const ErrT &)> |
861 | : public ErrorHandlerTraits<RetT (&)(ErrT &)> {}; |
862 | |
863 | // Specialization for member functions of the form 'RetT (const ErrT&) const'. |
864 | template <typename C, typename RetT, typename ErrT> |
865 | class ErrorHandlerTraits<RetT (C::*)(const ErrT &) const> |
866 | : public ErrorHandlerTraits<RetT (&)(ErrT &)> {}; |
867 | |
868 | /// Specialization for member functions of the form |
869 | /// 'RetT (std::unique_ptr<ErrT>)'. |
870 | template <typename C, typename RetT, typename ErrT> |
871 | class ErrorHandlerTraits<RetT (C::*)(std::unique_ptr<ErrT>)> |
872 | : public ErrorHandlerTraits<RetT (&)(std::unique_ptr<ErrT>)> {}; |
873 | |
874 | /// Specialization for member functions of the form |
875 | /// 'RetT (std::unique_ptr<ErrT>) const'. |
876 | template <typename C, typename RetT, typename ErrT> |
877 | class ErrorHandlerTraits<RetT (C::*)(std::unique_ptr<ErrT>) const> |
878 | : public ErrorHandlerTraits<RetT (&)(std::unique_ptr<ErrT>)> {}; |
879 | |
880 | inline Error handleErrorImpl(std::unique_ptr<ErrorInfoBase> Payload) { |
881 | return Error(std::move(Payload)); |
882 | } |
883 | |
884 | template <typename HandlerT, typename... HandlerTs> |
885 | Error handleErrorImpl(std::unique_ptr<ErrorInfoBase> Payload, |
886 | HandlerT &&Handler, HandlerTs &&... Handlers) { |
887 | if (ErrorHandlerTraits<HandlerT>::appliesTo(*Payload)) |
888 | return ErrorHandlerTraits<HandlerT>::apply(std::forward<HandlerT>(Handler), |
889 | std::move(Payload)); |
890 | return handleErrorImpl(std::move(Payload), |
891 | std::forward<HandlerTs>(Handlers)...); |
892 | } |
893 | |
894 | /// Pass the ErrorInfo(s) contained in E to their respective handlers. Any |
895 | /// unhandled errors (or Errors returned by handlers) are re-concatenated and |
896 | /// returned. |
897 | /// Because this function returns an error, its result must also be checked |
898 | /// or returned. If you intend to handle all errors use handleAllErrors |
899 | /// (which returns void, and will abort() on unhandled errors) instead. |
900 | template <typename... HandlerTs> |
901 | Error handleErrors(Error E, HandlerTs &&... Hs) { |
902 | if (!E) |
903 | return Error::success(); |
904 | |
905 | std::unique_ptr<ErrorInfoBase> Payload = E.takePayload(); |
906 | |
907 | if (Payload->isA<ErrorList>()) { |
908 | ErrorList &List = static_cast<ErrorList &>(*Payload); |
909 | Error R; |
910 | for (auto &P : List.Payloads) |
911 | R = ErrorList::join( |
912 | std::move(R), |
913 | handleErrorImpl(std::move(P), std::forward<HandlerTs>(Hs)...)); |
914 | return R; |
915 | } |
916 | |
917 | return handleErrorImpl(std::move(Payload), std::forward<HandlerTs>(Hs)...); |
918 | } |
919 | |
920 | /// Behaves the same as handleErrors, except that by contract all errors |
921 | /// *must* be handled by the given handlers (i.e. there must be no remaining |
922 | /// errors after running the handlers, or llvm_unreachable is called). |
923 | template <typename... HandlerTs> |
924 | void handleAllErrors(Error E, HandlerTs &&... Handlers) { |
925 | cantFail(handleErrors(std::move(E), std::forward<HandlerTs>(Handlers)...)); |
926 | } |
927 | |
928 | /// Check that E is a non-error, then drop it. |
929 | /// If E is an error, llvm_unreachable will be called. |
930 | inline void handleAllErrors(Error E) { |
931 | cantFail(std::move(E)); |
932 | } |
933 | |
934 | /// Handle any errors (if present) in an Expected<T>, then try a recovery path. |
935 | /// |
936 | /// If the incoming value is a success value it is returned unmodified. If it |
937 | /// is a failure value then it the contained error is passed to handleErrors. |
938 | /// If handleErrors is able to handle the error then the RecoveryPath functor |
939 | /// is called to supply the final result. If handleErrors is not able to |
940 | /// handle all errors then the unhandled errors are returned. |
941 | /// |
942 | /// This utility enables the follow pattern: |
943 | /// |
944 | /// @code{.cpp} |
945 | /// enum FooStrategy { Aggressive, Conservative }; |
946 | /// Expected<Foo> foo(FooStrategy S); |
947 | /// |
948 | /// auto ResultOrErr = |
949 | /// handleExpected( |
950 | /// foo(Aggressive), |
951 | /// []() { return foo(Conservative); }, |
952 | /// [](AggressiveStrategyError&) { |
953 | /// // Implicitly conusme this - we'll recover by using a conservative |
954 | /// // strategy. |
955 | /// }); |
956 | /// |
957 | /// @endcode |
958 | template <typename T, typename RecoveryFtor, typename... HandlerTs> |
959 | Expected<T> handleExpected(Expected<T> ValOrErr, RecoveryFtor &&RecoveryPath, |
960 | HandlerTs &&... Handlers) { |
961 | if (ValOrErr) |
962 | return ValOrErr; |
963 | |
964 | if (auto Err = handleErrors(ValOrErr.takeError(), |
965 | std::forward<HandlerTs>(Handlers)...)) |
966 | return std::move(Err); |
967 | |
968 | return RecoveryPath(); |
969 | } |
970 | |
971 | /// Log all errors (if any) in E to OS. If there are any errors, ErrorBanner |
972 | /// will be printed before the first one is logged. A newline will be printed |
973 | /// after each error. |
974 | /// |
975 | /// This function is compatible with the helpers from Support/WithColor.h. You |
976 | /// can pass any of them as the OS. Please consider using them instead of |
977 | /// including 'error: ' in the ErrorBanner. |
978 | /// |
979 | /// This is useful in the base level of your program to allow clean termination |
980 | /// (allowing clean deallocation of resources, etc.), while reporting error |
981 | /// information to the user. |
982 | void logAllUnhandledErrors(Error E, raw_ostream &OS, Twine ErrorBanner = {}); |
983 | |
984 | /// Write all error messages (if any) in E to a string. The newline character |
985 | /// is used to separate error messages. |
986 | inline std::string toString(Error E) { |
987 | SmallVector<std::string, 2> Errors; |
988 | handleAllErrors(std::move(E), [&Errors](const ErrorInfoBase &EI) { |
989 | Errors.push_back(EI.message()); |
990 | }); |
991 | return join(Errors.begin(), Errors.end(), "\n"); |
992 | } |
993 | |
994 | /// Consume a Error without doing anything. This method should be used |
995 | /// only where an error can be considered a reasonable and expected return |
996 | /// value. |
997 | /// |
998 | /// Uses of this method are potentially indicative of design problems: If it's |
999 | /// legitimate to do nothing while processing an "error", the error-producer |
1000 | /// might be more clearly refactored to return an Optional<T>. |
1001 | inline void consumeError(Error Err) { |
1002 | handleAllErrors(std::move(Err), [](const ErrorInfoBase &) {}); |
1003 | } |
1004 | |
1005 | /// Convert an Expected to an Optional without doing anything. This method |
1006 | /// should be used only where an error can be considered a reasonable and |
1007 | /// expected return value. |
1008 | /// |
1009 | /// Uses of this method are potentially indicative of problems: perhaps the |
1010 | /// error should be propagated further, or the error-producer should just |
1011 | /// return an Optional in the first place. |
1012 | template <typename T> Optional<T> expectedToOptional(Expected<T> &&E) { |
1013 | if (E) |
1014 | return std::move(*E); |
1015 | consumeError(E.takeError()); |
1016 | return None; |
1017 | } |
1018 | |
1019 | /// Helper for converting an Error to a bool. |
1020 | /// |
1021 | /// This method returns true if Err is in an error state, or false if it is |
1022 | /// in a success state. Puts Err in a checked state in both cases (unlike |
1023 | /// Error::operator bool(), which only does this for success states). |
1024 | inline bool errorToBool(Error Err) { |
1025 | bool IsError = static_cast<bool>(Err); |
1026 | if (IsError) |
1027 | consumeError(std::move(Err)); |
1028 | return IsError; |
1029 | } |
1030 | |
1031 | /// Helper for Errors used as out-parameters. |
1032 | /// |
1033 | /// This helper is for use with the Error-as-out-parameter idiom, where an error |
1034 | /// is passed to a function or method by reference, rather than being returned. |
1035 | /// In such cases it is helpful to set the checked bit on entry to the function |
1036 | /// so that the error can be written to (unchecked Errors abort on assignment) |
1037 | /// and clear the checked bit on exit so that clients cannot accidentally forget |
1038 | /// to check the result. This helper performs these actions automatically using |
1039 | /// RAII: |
1040 | /// |
1041 | /// @code{.cpp} |
1042 | /// Result foo(Error &Err) { |
1043 | /// ErrorAsOutParameter ErrAsOutParam(&Err); // 'Checked' flag set |
1044 | /// // <body of foo> |
1045 | /// // <- 'Checked' flag auto-cleared when ErrAsOutParam is destructed. |
1046 | /// } |
1047 | /// @endcode |
1048 | /// |
1049 | /// ErrorAsOutParameter takes an Error* rather than Error& so that it can be |
1050 | /// used with optional Errors (Error pointers that are allowed to be null). If |
1051 | /// ErrorAsOutParameter took an Error reference, an instance would have to be |
1052 | /// created inside every condition that verified that Error was non-null. By |
1053 | /// taking an Error pointer we can just create one instance at the top of the |
1054 | /// function. |
1055 | class ErrorAsOutParameter { |
1056 | public: |
1057 | ErrorAsOutParameter(Error *Err) : Err(Err) { |
1058 | // Raise the checked bit if Err is success. |
1059 | if (Err) |
1060 | (void)!!*Err; |
1061 | } |
1062 | |
1063 | ~ErrorAsOutParameter() { |
1064 | // Clear the checked bit. |
1065 | if (Err && !*Err) |
1066 | *Err = Error::success(); |
1067 | } |
1068 | |
1069 | private: |
1070 | Error *Err; |
1071 | }; |
1072 | |
1073 | /// Helper for Expected<T>s used as out-parameters. |
1074 | /// |
1075 | /// See ErrorAsOutParameter. |
1076 | template <typename T> |
1077 | class ExpectedAsOutParameter { |
1078 | public: |
1079 | ExpectedAsOutParameter(Expected<T> *ValOrErr) |
1080 | : ValOrErr(ValOrErr) { |
1081 | if (ValOrErr) |
1082 | (void)!!*ValOrErr; |
1083 | } |
1084 | |
1085 | ~ExpectedAsOutParameter() { |
1086 | if (ValOrErr) |
1087 | ValOrErr->setUnchecked(); |
1088 | } |
1089 | |
1090 | private: |
1091 | Expected<T> *ValOrErr; |
1092 | }; |
1093 | |
1094 | /// This class wraps a std::error_code in a Error. |
1095 | /// |
1096 | /// This is useful if you're writing an interface that returns a Error |
1097 | /// (or Expected) and you want to call code that still returns |
1098 | /// std::error_codes. |
1099 | class ECError : public ErrorInfo<ECError> { |
1100 | friend Error errorCodeToError(std::error_code); |
1101 | |
1102 | virtual void anchor() override; |
1103 | |
1104 | public: |
1105 | void setErrorCode(std::error_code EC) { this->EC = EC; } |
1106 | std::error_code convertToErrorCode() const override { return EC; } |
1107 | void log(raw_ostream &OS) const override { OS << EC.message(); } |
1108 | |
1109 | // Used by ErrorInfo::classID. |
1110 | static char ID; |
1111 | |
1112 | protected: |
1113 | ECError() = default; |
1114 | ECError(std::error_code EC) : EC(EC) {} |
1115 | |
1116 | std::error_code EC; |
1117 | }; |
1118 | |
1119 | /// The value returned by this function can be returned from convertToErrorCode |
1120 | /// for Error values where no sensible translation to std::error_code exists. |
1121 | /// It should only be used in this situation, and should never be used where a |
1122 | /// sensible conversion to std::error_code is available, as attempts to convert |
1123 | /// to/from this error will result in a fatal error. (i.e. it is a programmatic |
1124 | ///error to try to convert such a value). |
1125 | std::error_code inconvertibleErrorCode(); |
1126 | |
1127 | /// Helper for converting an std::error_code to a Error. |
1128 | Error errorCodeToError(std::error_code EC); |
1129 | |
1130 | /// Helper for converting an ECError to a std::error_code. |
1131 | /// |
1132 | /// This method requires that Err be Error() or an ECError, otherwise it |
1133 | /// will trigger a call to abort(). |
1134 | std::error_code errorToErrorCode(Error Err); |
1135 | |
1136 | /// Convert an ErrorOr<T> to an Expected<T>. |
1137 | template <typename T> Expected<T> errorOrToExpected(ErrorOr<T> &&EO) { |
1138 | if (auto EC = EO.getError()) |
1139 | return errorCodeToError(EC); |
1140 | return std::move(*EO); |
1141 | } |
1142 | |
1143 | /// Convert an Expected<T> to an ErrorOr<T>. |
1144 | template <typename T> ErrorOr<T> expectedToErrorOr(Expected<T> &&E) { |
1145 | if (auto Err = E.takeError()) |
1146 | return errorToErrorCode(std::move(Err)); |
1147 | return std::move(*E); |
1148 | } |
1149 | |
1150 | /// This class wraps a string in an Error. |
1151 | /// |
1152 | /// StringError is useful in cases where the client is not expected to be able |
1153 | /// to consume the specific error message programmatically (for example, if the |
1154 | /// error message is to be presented to the user). |
1155 | /// |
1156 | /// StringError can also be used when additional information is to be printed |
1157 | /// along with a error_code message. Depending on the constructor called, this |
1158 | /// class can either display: |
1159 | /// 1. the error_code message (ECError behavior) |
1160 | /// 2. a string |
1161 | /// 3. the error_code message and a string |
1162 | /// |
1163 | /// These behaviors are useful when subtyping is required; for example, when a |
1164 | /// specific library needs an explicit error type. In the example below, |
1165 | /// PDBError is derived from StringError: |
1166 | /// |
1167 | /// @code{.cpp} |
1168 | /// Expected<int> foo() { |
1169 | /// return llvm::make_error<PDBError>(pdb_error_code::dia_failed_loading, |
1170 | /// "Additional information"); |
1171 | /// } |
1172 | /// @endcode |
1173 | /// |
1174 | class StringError : public ErrorInfo<StringError> { |
1175 | public: |
1176 | static char ID; |
1177 | |
1178 | // Prints EC + S and converts to EC |
1179 | StringError(std::error_code EC, const Twine &S = Twine()); |
1180 | |
1181 | // Prints S and converts to EC |
1182 | StringError(const Twine &S, std::error_code EC); |
1183 | |
1184 | void log(raw_ostream &OS) const override; |
1185 | std::error_code convertToErrorCode() const override; |
1186 | |
1187 | const std::string &getMessage() const { return Msg; } |
1188 | |
1189 | private: |
1190 | std::string Msg; |
1191 | std::error_code EC; |
1192 | const bool PrintMsgOnly = false; |
1193 | }; |
1194 | |
1195 | /// Create formatted StringError object. |
1196 | template <typename... Ts> |
1197 | inline Error createStringError(std::error_code EC, char const *Fmt, |
1198 | const Ts &... Vals) { |
1199 | std::string Buffer; |
1200 | raw_string_ostream Stream(Buffer); |
1201 | Stream << format(Fmt, Vals...); |
1202 | return make_error<StringError>(Stream.str(), EC); |
1203 | } |
1204 | |
1205 | Error createStringError(std::error_code EC, char const *Msg); |
1206 | |
1207 | inline Error createStringError(std::error_code EC, const Twine &S) { |
1208 | return createStringError(EC, S.str().c_str()); |
1209 | } |
1210 | |
1211 | template <typename... Ts> |
1212 | inline Error createStringError(std::errc EC, char const *Fmt, |
1213 | const Ts &... Vals) { |
1214 | return createStringError(std::make_error_code(EC), Fmt, Vals...); |
1215 | } |
1216 | |
1217 | /// This class wraps a filename and another Error. |
1218 | /// |
1219 | /// In some cases, an error needs to live along a 'source' name, in order to |
1220 | /// show more detailed information to the user. |
1221 | class FileError final : public ErrorInfo<FileError> { |
1222 | |
1223 | friend Error createFileError(const Twine &, Error); |
1224 | friend Error createFileError(const Twine &, size_t, Error); |
1225 | |
1226 | public: |
1227 | void log(raw_ostream &OS) const override { |
1228 | assert(Err && !FileName.empty() && "Trying to log after takeError().")((Err && !FileName.empty() && "Trying to log after takeError()." ) ? static_cast<void> (0) : __assert_fail ("Err && !FileName.empty() && \"Trying to log after takeError().\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 1228, __PRETTY_FUNCTION__)); |
1229 | OS << "'" << FileName << "': "; |
1230 | if (Line.hasValue()) |
1231 | OS << "line " << Line.getValue() << ": "; |
1232 | Err->log(OS); |
1233 | } |
1234 | |
1235 | StringRef getFileName() { return FileName; } |
1236 | |
1237 | Error takeError() { return Error(std::move(Err)); } |
1238 | |
1239 | std::error_code convertToErrorCode() const override; |
1240 | |
1241 | // Used by ErrorInfo::classID. |
1242 | static char ID; |
1243 | |
1244 | private: |
1245 | FileError(const Twine &F, Optional<size_t> LineNum, |
1246 | std::unique_ptr<ErrorInfoBase> E) { |
1247 | assert(E && "Cannot create FileError from Error success value.")((E && "Cannot create FileError from Error success value." ) ? static_cast<void> (0) : __assert_fail ("E && \"Cannot create FileError from Error success value.\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 1247, __PRETTY_FUNCTION__)); |
1248 | assert(!F.isTriviallyEmpty() &&((!F.isTriviallyEmpty() && "The file name provided to FileError must not be empty." ) ? static_cast<void> (0) : __assert_fail ("!F.isTriviallyEmpty() && \"The file name provided to FileError must not be empty.\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 1249, __PRETTY_FUNCTION__)) |
1249 | "The file name provided to FileError must not be empty.")((!F.isTriviallyEmpty() && "The file name provided to FileError must not be empty." ) ? static_cast<void> (0) : __assert_fail ("!F.isTriviallyEmpty() && \"The file name provided to FileError must not be empty.\"" , "/build/llvm-toolchain-snapshot-10~++20200112100611+7fa5290d5bd/llvm/include/llvm/Support/Error.h" , 1249, __PRETTY_FUNCTION__)); |
1250 | FileName = F.str(); |
1251 | Err = std::move(E); |
1252 | Line = std::move(LineNum); |
1253 | } |
1254 | |
1255 | static Error build(const Twine &F, Optional<size_t> Line, Error E) { |
1256 | std::unique_ptr<ErrorInfoBase> Payload; |
1257 | handleAllErrors(std::move(E), |
1258 | [&](std::unique_ptr<ErrorInfoBase> EIB) -> Error { |
1259 | Payload = std::move(EIB); |
1260 | return Error::success(); |
1261 | }); |
1262 | return Error( |
1263 | std::unique_ptr<FileError>(new FileError(F, Line, std::move(Payload)))); |
1264 | } |
1265 | |
1266 | std::string FileName; |
1267 | Optional<size_t> Line; |
1268 | std::unique_ptr<ErrorInfoBase> Err; |
1269 | }; |
1270 | |
1271 | /// Concatenate a source file path and/or name with an Error. The resulting |
1272 | /// Error is unchecked. |
1273 | inline Error createFileError(const Twine &F, Error E) { |
1274 | return FileError::build(F, Optional<size_t>(), std::move(E)); |
1275 | } |
1276 | |
1277 | /// Concatenate a source file path and/or name with line number and an Error. |
1278 | /// The resulting Error is unchecked. |
1279 | inline Error createFileError(const Twine &F, size_t Line, Error E) { |
1280 | return FileError::build(F, Optional<size_t>(Line), std::move(E)); |
1281 | } |
1282 | |
1283 | /// Concatenate a source file path and/or name with a std::error_code |
1284 | /// to form an Error object. |
1285 | inline Error createFileError(const Twine &F, std::error_code EC) { |
1286 | return createFileError(F, errorCodeToError(EC)); |
1287 | } |
1288 | |
1289 | /// Concatenate a source file path and/or name with line number and |
1290 | /// std::error_code to form an Error object. |
1291 | inline Error createFileError(const Twine &F, size_t Line, std::error_code EC) { |
1292 | return createFileError(F, Line, errorCodeToError(EC)); |
1293 | } |
1294 | |
1295 | Error createFileError(const Twine &F, ErrorSuccess) = delete; |
1296 | |
1297 | /// Helper for check-and-exit error handling. |
1298 | /// |
1299 | /// For tool use only. NOT FOR USE IN LIBRARY CODE. |
1300 | /// |
1301 | class ExitOnError { |
1302 | public: |
1303 | /// Create an error on exit helper. |
1304 | ExitOnError(std::string Banner = "", int DefaultErrorExitCode = 1) |
1305 | : Banner(std::move(Banner)), |
1306 | GetExitCode([=](const Error &) { return DefaultErrorExitCode; }) {} |
1307 | |
1308 | /// Set the banner string for any errors caught by operator(). |
1309 | void setBanner(std::string Banner) { this->Banner = std::move(Banner); } |
1310 | |
1311 | /// Set the exit-code mapper function. |
1312 | void setExitCodeMapper(std::function<int(const Error &)> GetExitCode) { |
1313 | this->GetExitCode = std::move(GetExitCode); |
1314 | } |
1315 | |
1316 | /// Check Err. If it's in a failure state log the error(s) and exit. |
1317 | void operator()(Error Err) const { checkError(std::move(Err)); } |
1318 | |
1319 | /// Check E. If it's in a success state then return the contained value. If |
1320 | /// it's in a failure state log the error(s) and exit. |
1321 | template <typename T> T operator()(Expected<T> &&E) const { |
1322 | checkError(E.takeError()); |
1323 | return std::move(*E); |
1324 | } |
1325 | |
1326 | /// Check E. If it's in a success state then return the contained reference. If |
1327 | /// it's in a failure state log the error(s) and exit. |
1328 | template <typename T> T& operator()(Expected<T&> &&E) const { |
1329 | checkError(E.takeError()); |
1330 | return *E; |
1331 | } |
1332 | |
1333 | private: |
1334 | void checkError(Error Err) const { |
1335 | if (Err) { |
1336 | int ExitCode = GetExitCode(Err); |
1337 | logAllUnhandledErrors(std::move(Err), errs(), Banner); |
1338 | exit(ExitCode); |
1339 | } |
1340 | } |
1341 | |
1342 | std::string Banner; |
1343 | std::function<int(const Error &)> GetExitCode; |
1344 | }; |
1345 | |
1346 | /// Conversion from Error to LLVMErrorRef for C error bindings. |
1347 | inline LLVMErrorRef wrap(Error Err) { |
1348 | return reinterpret_cast<LLVMErrorRef>(Err.takePayload().release()); |
1349 | } |
1350 | |
1351 | /// Conversion from LLVMErrorRef to Error for C error bindings. |
1352 | inline Error unwrap(LLVMErrorRef ErrRef) { |
1353 | return Error(std::unique_ptr<ErrorInfoBase>( |
1354 | reinterpret_cast<ErrorInfoBase *>(ErrRef))); |
1355 | } |
1356 | |
1357 | } // end namespace llvm |
1358 | |
1359 | #endif // LLVM_SUPPORT_ERROR_H |