LLVM 19.0.0git
BitcodeAnalyzer.cpp
Go to the documentation of this file.
1//===- BitcodeAnalyzer.cpp - Internal BitcodeAnalyzer 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
14#include "llvm/Support/Format.h"
15#include "llvm/Support/SHA1.h"
16#include <optional>
17
18using namespace llvm;
19
20static Error reportError(StringRef Message) {
21 return createStringError(std::errc::illegal_byte_sequence, Message.data());
22}
23
24/// Return a symbolic block name if known, otherwise return null.
25static std::optional<const char *>
26GetBlockName(unsigned BlockID, const BitstreamBlockInfo &BlockInfo,
27 CurStreamTypeType CurStreamType) {
28 // Standard blocks for all bitcode files.
29 if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
30 if (BlockID == bitc::BLOCKINFO_BLOCK_ID)
31 return "BLOCKINFO_BLOCK";
32 return std::nullopt;
33 }
34
35 // Check to see if we have a blockinfo record for this block, with a name.
37 BlockInfo.getBlockInfo(BlockID)) {
38 if (!Info->Name.empty())
39 return Info->Name.c_str();
40 }
41
42 if (CurStreamType != LLVMIRBitstream)
43 return std::nullopt;
44
45 switch (BlockID) {
46 default:
47 return std::nullopt;
49 return "OPERAND_BUNDLE_TAGS_BLOCK";
51 return "MODULE_BLOCK";
53 return "PARAMATTR_BLOCK";
55 return "PARAMATTR_GROUP_BLOCK_ID";
57 return "TYPE_BLOCK_ID";
59 return "CONSTANTS_BLOCK";
61 return "FUNCTION_BLOCK";
63 return "IDENTIFICATION_BLOCK_ID";
65 return "VALUE_SYMTAB";
67 return "METADATA_BLOCK";
69 return "METADATA_KIND_BLOCK";
71 return "METADATA_ATTACHMENT_BLOCK";
73 return "USELIST_BLOCK_ID";
75 return "GLOBALVAL_SUMMARY_BLOCK";
77 return "FULL_LTO_GLOBALVAL_SUMMARY_BLOCK";
79 return "MODULE_STRTAB_BLOCK";
81 return "STRTAB_BLOCK";
83 return "SYMTAB_BLOCK";
84 }
85}
86
87/// Return a symbolic code name if known, otherwise return null.
88static std::optional<const char *>
89GetCodeName(unsigned CodeID, unsigned BlockID,
90 const BitstreamBlockInfo &BlockInfo,
91 CurStreamTypeType CurStreamType) {
92 // Standard blocks for all bitcode files.
93 if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
94 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
95 switch (CodeID) {
96 default:
97 return std::nullopt;
99 return "SETBID";
101 return "BLOCKNAME";
103 return "SETRECORDNAME";
104 }
105 }
106 return std::nullopt;
107 }
108
109 // Check to see if we have a blockinfo record for this record, with a name.
111 BlockInfo.getBlockInfo(BlockID)) {
112 for (const std::pair<unsigned, std::string> &RN : Info->RecordNames)
113 if (RN.first == CodeID)
114 return RN.second.c_str();
115 }
116
117 if (CurStreamType != LLVMIRBitstream)
118 return std::nullopt;
119
120#define STRINGIFY_CODE(PREFIX, CODE) \
121 case bitc::PREFIX##_##CODE: \
122 return #CODE;
123 switch (BlockID) {
124 default:
125 return std::nullopt;
127 switch (CodeID) {
128 default:
129 return std::nullopt;
130 STRINGIFY_CODE(MODULE_CODE, VERSION)
131 STRINGIFY_CODE(MODULE_CODE, TRIPLE)
132 STRINGIFY_CODE(MODULE_CODE, DATALAYOUT)
133 STRINGIFY_CODE(MODULE_CODE, ASM)
134 STRINGIFY_CODE(MODULE_CODE, SECTIONNAME)
135 STRINGIFY_CODE(MODULE_CODE, DEPLIB) // Deprecated, present in old bitcode
136 STRINGIFY_CODE(MODULE_CODE, GLOBALVAR)
137 STRINGIFY_CODE(MODULE_CODE, FUNCTION)
138 STRINGIFY_CODE(MODULE_CODE, ALIAS)
139 STRINGIFY_CODE(MODULE_CODE, GCNAME)
140 STRINGIFY_CODE(MODULE_CODE, COMDAT)
141 STRINGIFY_CODE(MODULE_CODE, VSTOFFSET)
142 STRINGIFY_CODE(MODULE_CODE, METADATA_VALUES_UNUSED)
143 STRINGIFY_CODE(MODULE_CODE, SOURCE_FILENAME)
144 STRINGIFY_CODE(MODULE_CODE, HASH)
145 }
147 switch (CodeID) {
148 default:
149 return std::nullopt;
150 STRINGIFY_CODE(IDENTIFICATION_CODE, STRING)
151 STRINGIFY_CODE(IDENTIFICATION_CODE, EPOCH)
152 }
154 switch (CodeID) {
155 default:
156 return std::nullopt;
157 // FIXME: Should these be different?
159 return "ENTRY";
161 return "ENTRY";
162 }
164 switch (CodeID) {
165 default:
166 return std::nullopt;
168 return "ENTRY";
169 }
171 switch (CodeID) {
172 default:
173 return std::nullopt;
174 STRINGIFY_CODE(TYPE_CODE, NUMENTRY)
175 STRINGIFY_CODE(TYPE_CODE, VOID)
176 STRINGIFY_CODE(TYPE_CODE, FLOAT)
177 STRINGIFY_CODE(TYPE_CODE, DOUBLE)
178 STRINGIFY_CODE(TYPE_CODE, LABEL)
179 STRINGIFY_CODE(TYPE_CODE, OPAQUE)
180 STRINGIFY_CODE(TYPE_CODE, INTEGER)
181 STRINGIFY_CODE(TYPE_CODE, POINTER)
182 STRINGIFY_CODE(TYPE_CODE, HALF)
183 STRINGIFY_CODE(TYPE_CODE, ARRAY)
184 STRINGIFY_CODE(TYPE_CODE, VECTOR)
185 STRINGIFY_CODE(TYPE_CODE, X86_FP80)
186 STRINGIFY_CODE(TYPE_CODE, FP128)
187 STRINGIFY_CODE(TYPE_CODE, PPC_FP128)
188 STRINGIFY_CODE(TYPE_CODE, METADATA)
189 STRINGIFY_CODE(TYPE_CODE, X86_MMX)
190 STRINGIFY_CODE(TYPE_CODE, STRUCT_ANON)
191 STRINGIFY_CODE(TYPE_CODE, STRUCT_NAME)
192 STRINGIFY_CODE(TYPE_CODE, STRUCT_NAMED)
193 STRINGIFY_CODE(TYPE_CODE, FUNCTION)
194 STRINGIFY_CODE(TYPE_CODE, TOKEN)
195 STRINGIFY_CODE(TYPE_CODE, BFLOAT)
196 }
197
199 switch (CodeID) {
200 default:
201 return std::nullopt;
202 STRINGIFY_CODE(CST_CODE, SETTYPE)
203 STRINGIFY_CODE(CST_CODE, NULL)
204 STRINGIFY_CODE(CST_CODE, UNDEF)
205 STRINGIFY_CODE(CST_CODE, INTEGER)
206 STRINGIFY_CODE(CST_CODE, WIDE_INTEGER)
207 STRINGIFY_CODE(CST_CODE, FLOAT)
208 STRINGIFY_CODE(CST_CODE, AGGREGATE)
209 STRINGIFY_CODE(CST_CODE, STRING)
210 STRINGIFY_CODE(CST_CODE, CSTRING)
211 STRINGIFY_CODE(CST_CODE, CE_BINOP)
212 STRINGIFY_CODE(CST_CODE, CE_CAST)
213 STRINGIFY_CODE(CST_CODE, CE_GEP)
214 STRINGIFY_CODE(CST_CODE, CE_INBOUNDS_GEP)
215 STRINGIFY_CODE(CST_CODE, CE_SELECT)
216 STRINGIFY_CODE(CST_CODE, CE_EXTRACTELT)
217 STRINGIFY_CODE(CST_CODE, CE_INSERTELT)
218 STRINGIFY_CODE(CST_CODE, CE_SHUFFLEVEC)
219 STRINGIFY_CODE(CST_CODE, CE_CMP)
220 STRINGIFY_CODE(CST_CODE, INLINEASM)
221 STRINGIFY_CODE(CST_CODE, CE_SHUFVEC_EX)
222 STRINGIFY_CODE(CST_CODE, CE_UNOP)
223 STRINGIFY_CODE(CST_CODE, DSO_LOCAL_EQUIVALENT)
224 STRINGIFY_CODE(CST_CODE, NO_CFI_VALUE)
226 return "CST_CODE_BLOCKADDRESS";
227 STRINGIFY_CODE(CST_CODE, DATA)
228 }
230 switch (CodeID) {
231 default:
232 return std::nullopt;
233 STRINGIFY_CODE(FUNC_CODE, DECLAREBLOCKS)
234 STRINGIFY_CODE(FUNC_CODE, INST_BINOP)
235 STRINGIFY_CODE(FUNC_CODE, INST_CAST)
236 STRINGIFY_CODE(FUNC_CODE, INST_GEP_OLD)
237 STRINGIFY_CODE(FUNC_CODE, INST_INBOUNDS_GEP_OLD)
238 STRINGIFY_CODE(FUNC_CODE, INST_SELECT)
239 STRINGIFY_CODE(FUNC_CODE, INST_EXTRACTELT)
240 STRINGIFY_CODE(FUNC_CODE, INST_INSERTELT)
241 STRINGIFY_CODE(FUNC_CODE, INST_SHUFFLEVEC)
242 STRINGIFY_CODE(FUNC_CODE, INST_CMP)
243 STRINGIFY_CODE(FUNC_CODE, INST_RET)
244 STRINGIFY_CODE(FUNC_CODE, INST_BR)
245 STRINGIFY_CODE(FUNC_CODE, INST_SWITCH)
246 STRINGIFY_CODE(FUNC_CODE, INST_INVOKE)
247 STRINGIFY_CODE(FUNC_CODE, INST_UNOP)
248 STRINGIFY_CODE(FUNC_CODE, INST_UNREACHABLE)
249 STRINGIFY_CODE(FUNC_CODE, INST_CLEANUPRET)
250 STRINGIFY_CODE(FUNC_CODE, INST_CATCHRET)
251 STRINGIFY_CODE(FUNC_CODE, INST_CATCHPAD)
252 STRINGIFY_CODE(FUNC_CODE, INST_PHI)
253 STRINGIFY_CODE(FUNC_CODE, INST_ALLOCA)
254 STRINGIFY_CODE(FUNC_CODE, INST_LOAD)
255 STRINGIFY_CODE(FUNC_CODE, INST_VAARG)
256 STRINGIFY_CODE(FUNC_CODE, INST_STORE)
257 STRINGIFY_CODE(FUNC_CODE, INST_EXTRACTVAL)
258 STRINGIFY_CODE(FUNC_CODE, INST_INSERTVAL)
259 STRINGIFY_CODE(FUNC_CODE, INST_CMP2)
260 STRINGIFY_CODE(FUNC_CODE, INST_VSELECT)
261 STRINGIFY_CODE(FUNC_CODE, DEBUG_LOC_AGAIN)
262 STRINGIFY_CODE(FUNC_CODE, INST_CALL)
263 STRINGIFY_CODE(FUNC_CODE, DEBUG_LOC)
264 STRINGIFY_CODE(FUNC_CODE, INST_GEP)
265 STRINGIFY_CODE(FUNC_CODE, OPERAND_BUNDLE)
266 STRINGIFY_CODE(FUNC_CODE, INST_FENCE)
267 STRINGIFY_CODE(FUNC_CODE, INST_ATOMICRMW)
268 STRINGIFY_CODE(FUNC_CODE, INST_LOADATOMIC)
269 STRINGIFY_CODE(FUNC_CODE, INST_STOREATOMIC)
270 STRINGIFY_CODE(FUNC_CODE, INST_CMPXCHG)
271 STRINGIFY_CODE(FUNC_CODE, INST_CALLBR)
272 STRINGIFY_CODE(FUNC_CODE, BLOCKADDR_USERS)
273 STRINGIFY_CODE(FUNC_CODE, DEBUG_RECORD_DECLARE)
274 STRINGIFY_CODE(FUNC_CODE, DEBUG_RECORD_VALUE)
275 STRINGIFY_CODE(FUNC_CODE, DEBUG_RECORD_ASSIGN)
276 STRINGIFY_CODE(FUNC_CODE, DEBUG_RECORD_VALUE_SIMPLE)
277 STRINGIFY_CODE(FUNC_CODE, DEBUG_RECORD_LABEL)
278 }
280 switch (CodeID) {
281 default:
282 return std::nullopt;
283 STRINGIFY_CODE(VST_CODE, ENTRY)
284 STRINGIFY_CODE(VST_CODE, BBENTRY)
285 STRINGIFY_CODE(VST_CODE, FNENTRY)
286 STRINGIFY_CODE(VST_CODE, COMBINED_ENTRY)
287 }
289 switch (CodeID) {
290 default:
291 return std::nullopt;
292 STRINGIFY_CODE(MST_CODE, ENTRY)
293 STRINGIFY_CODE(MST_CODE, HASH)
294 }
297 switch (CodeID) {
298 default:
299 return std::nullopt;
300 STRINGIFY_CODE(FS, PERMODULE)
301 STRINGIFY_CODE(FS, PERMODULE_PROFILE)
302 STRINGIFY_CODE(FS, PERMODULE_RELBF)
303 STRINGIFY_CODE(FS, PERMODULE_GLOBALVAR_INIT_REFS)
304 STRINGIFY_CODE(FS, PERMODULE_VTABLE_GLOBALVAR_INIT_REFS)
305 STRINGIFY_CODE(FS, COMBINED)
306 STRINGIFY_CODE(FS, COMBINED_PROFILE)
307 STRINGIFY_CODE(FS, COMBINED_GLOBALVAR_INIT_REFS)
308 STRINGIFY_CODE(FS, ALIAS)
309 STRINGIFY_CODE(FS, COMBINED_ALIAS)
310 STRINGIFY_CODE(FS, COMBINED_ORIGINAL_NAME)
311 STRINGIFY_CODE(FS, VERSION)
312 STRINGIFY_CODE(FS, FLAGS)
313 STRINGIFY_CODE(FS, TYPE_TESTS)
314 STRINGIFY_CODE(FS, TYPE_TEST_ASSUME_VCALLS)
315 STRINGIFY_CODE(FS, TYPE_CHECKED_LOAD_VCALLS)
316 STRINGIFY_CODE(FS, TYPE_TEST_ASSUME_CONST_VCALL)
317 STRINGIFY_CODE(FS, TYPE_CHECKED_LOAD_CONST_VCALL)
318 STRINGIFY_CODE(FS, VALUE_GUID)
319 STRINGIFY_CODE(FS, CFI_FUNCTION_DEFS)
320 STRINGIFY_CODE(FS, CFI_FUNCTION_DECLS)
321 STRINGIFY_CODE(FS, TYPE_ID)
322 STRINGIFY_CODE(FS, TYPE_ID_METADATA)
323 STRINGIFY_CODE(FS, BLOCK_COUNT)
324 STRINGIFY_CODE(FS, PARAM_ACCESS)
325 STRINGIFY_CODE(FS, PERMODULE_CALLSITE_INFO)
326 STRINGIFY_CODE(FS, PERMODULE_ALLOC_INFO)
327 STRINGIFY_CODE(FS, COMBINED_CALLSITE_INFO)
328 STRINGIFY_CODE(FS, COMBINED_ALLOC_INFO)
329 STRINGIFY_CODE(FS, STACK_IDS)
330 }
332 switch (CodeID) {
333 default:
334 return std::nullopt;
335 STRINGIFY_CODE(METADATA, ATTACHMENT)
336 }
338 switch (CodeID) {
339 default:
340 return std::nullopt;
341 STRINGIFY_CODE(METADATA, STRING_OLD)
342 STRINGIFY_CODE(METADATA, VALUE)
343 STRINGIFY_CODE(METADATA, NODE)
344 STRINGIFY_CODE(METADATA, NAME)
345 STRINGIFY_CODE(METADATA, DISTINCT_NODE)
346 STRINGIFY_CODE(METADATA, KIND) // Older bitcode has it in a MODULE_BLOCK
347 STRINGIFY_CODE(METADATA, LOCATION)
348 STRINGIFY_CODE(METADATA, OLD_NODE)
349 STRINGIFY_CODE(METADATA, OLD_FN_NODE)
350 STRINGIFY_CODE(METADATA, NAMED_NODE)
351 STRINGIFY_CODE(METADATA, GENERIC_DEBUG)
352 STRINGIFY_CODE(METADATA, SUBRANGE)
353 STRINGIFY_CODE(METADATA, ENUMERATOR)
354 STRINGIFY_CODE(METADATA, BASIC_TYPE)
355 STRINGIFY_CODE(METADATA, FILE)
356 STRINGIFY_CODE(METADATA, DERIVED_TYPE)
357 STRINGIFY_CODE(METADATA, COMPOSITE_TYPE)
358 STRINGIFY_CODE(METADATA, SUBROUTINE_TYPE)
359 STRINGIFY_CODE(METADATA, COMPILE_UNIT)
360 STRINGIFY_CODE(METADATA, SUBPROGRAM)
361 STRINGIFY_CODE(METADATA, LEXICAL_BLOCK)
362 STRINGIFY_CODE(METADATA, LEXICAL_BLOCK_FILE)
363 STRINGIFY_CODE(METADATA, NAMESPACE)
364 STRINGIFY_CODE(METADATA, TEMPLATE_TYPE)
365 STRINGIFY_CODE(METADATA, TEMPLATE_VALUE)
366 STRINGIFY_CODE(METADATA, GLOBAL_VAR)
367 STRINGIFY_CODE(METADATA, LOCAL_VAR)
368 STRINGIFY_CODE(METADATA, EXPRESSION)
369 STRINGIFY_CODE(METADATA, OBJC_PROPERTY)
370 STRINGIFY_CODE(METADATA, IMPORTED_ENTITY)
371 STRINGIFY_CODE(METADATA, MODULE)
372 STRINGIFY_CODE(METADATA, MACRO)
373 STRINGIFY_CODE(METADATA, MACRO_FILE)
374 STRINGIFY_CODE(METADATA, STRINGS)
375 STRINGIFY_CODE(METADATA, GLOBAL_DECL_ATTACHMENT)
376 STRINGIFY_CODE(METADATA, GLOBAL_VAR_EXPR)
377 STRINGIFY_CODE(METADATA, INDEX_OFFSET)
378 STRINGIFY_CODE(METADATA, INDEX)
379 STRINGIFY_CODE(METADATA, ARG_LIST)
380 }
382 switch (CodeID) {
383 default:
384 return std::nullopt;
385 STRINGIFY_CODE(METADATA, KIND)
386 }
388 switch (CodeID) {
389 default:
390 return std::nullopt;
392 return "USELIST_CODE_DEFAULT";
394 return "USELIST_CODE_BB";
395 }
396
398 switch (CodeID) {
399 default:
400 return std::nullopt;
402 return "OPERAND_BUNDLE_TAG";
403 }
405 switch (CodeID) {
406 default:
407 return std::nullopt;
409 return "BLOB";
410 }
412 switch (CodeID) {
413 default:
414 return std::nullopt;
416 return "BLOB";
417 }
418 }
419#undef STRINGIFY_CODE
420}
421
422static void printSize(raw_ostream &OS, double Bits) {
423 OS << format("%.2f/%.2fB/%luW", Bits, Bits / 8, (unsigned long)(Bits / 32));
424}
425static void printSize(raw_ostream &OS, uint64_t Bits) {
426 OS << format("%lub/%.2fB/%luW", (unsigned long)Bits, (double)Bits / 8,
427 (unsigned long)(Bits / 32));
428}
429
431 auto tryRead = [&Stream](char &Dest, size_t size) -> Error {
432 if (Expected<SimpleBitstreamCursor::word_t> MaybeWord = Stream.Read(size))
433 Dest = MaybeWord.get();
434 else
435 return MaybeWord.takeError();
436 return Error::success();
437 };
438
439 char Signature[6];
440 if (Error Err = tryRead(Signature[0], 8))
441 return std::move(Err);
442 if (Error Err = tryRead(Signature[1], 8))
443 return std::move(Err);
444
445 // Autodetect the file contents, if it is one we know.
446 if (Signature[0] == 'C' && Signature[1] == 'P') {
447 if (Error Err = tryRead(Signature[2], 8))
448 return std::move(Err);
449 if (Error Err = tryRead(Signature[3], 8))
450 return std::move(Err);
451 if (Signature[2] == 'C' && Signature[3] == 'H')
453 } else if (Signature[0] == 'D' && Signature[1] == 'I') {
454 if (Error Err = tryRead(Signature[2], 8))
455 return std::move(Err);
456 if (Error Err = tryRead(Signature[3], 8))
457 return std::move(Err);
458 if (Signature[2] == 'A' && Signature[3] == 'G')
460 } else if (Signature[0] == 'R' && Signature[1] == 'M') {
461 if (Error Err = tryRead(Signature[2], 8))
462 return std::move(Err);
463 if (Error Err = tryRead(Signature[3], 8))
464 return std::move(Err);
465 if (Signature[2] == 'R' && Signature[3] == 'K')
467 } else {
468 if (Error Err = tryRead(Signature[2], 4))
469 return std::move(Err);
470 if (Error Err = tryRead(Signature[3], 4))
471 return std::move(Err);
472 if (Error Err = tryRead(Signature[4], 4))
473 return std::move(Err);
474 if (Error Err = tryRead(Signature[5], 4))
475 return std::move(Err);
476 if (Signature[0] == 'B' && Signature[1] == 'C' && Signature[2] == 0x0 &&
477 Signature[3] == 0xC && Signature[4] == 0xE && Signature[5] == 0xD)
478 return LLVMIRBitstream;
479 }
480 return UnknownBitstream;
481}
482
483static Expected<CurStreamTypeType> analyzeHeader(std::optional<BCDumpOptions> O,
484 BitstreamCursor &Stream) {
485 ArrayRef<uint8_t> Bytes = Stream.getBitcodeBytes();
486 const unsigned char *BufPtr = (const unsigned char *)Bytes.data();
487 const unsigned char *EndBufPtr = BufPtr + Bytes.size();
488
489 // If we have a wrapper header, parse it and ignore the non-bc file
490 // contents. The magic number is 0x0B17C0DE stored in little endian.
491 if (isBitcodeWrapper(BufPtr, EndBufPtr)) {
492 if (Bytes.size() < BWH_HeaderSize)
493 return reportError("Invalid bitcode wrapper header");
494
495 if (O) {
496 unsigned Magic = support::endian::read32le(&BufPtr[BWH_MagicField]);
497 unsigned Version = support::endian::read32le(&BufPtr[BWH_VersionField]);
499 unsigned Size = support::endian::read32le(&BufPtr[BWH_SizeField]);
500 unsigned CPUType = support::endian::read32le(&BufPtr[BWH_CPUTypeField]);
501
502 O->OS << "<BITCODE_WRAPPER_HEADER"
503 << " Magic=" << format_hex(Magic, 10)
504 << " Version=" << format_hex(Version, 10)
505 << " Offset=" << format_hex(Offset, 10)
506 << " Size=" << format_hex(Size, 10)
507 << " CPUType=" << format_hex(CPUType, 10) << "/>\n";
508 }
509
510 if (SkipBitcodeWrapperHeader(BufPtr, EndBufPtr, true))
511 return reportError("Invalid bitcode wrapper header");
512 }
513
514 // Use the cursor modified by skipping the wrapper header.
515 Stream = BitstreamCursor(ArrayRef<uint8_t>(BufPtr, EndBufPtr));
516
517 return ReadSignature(Stream);
518}
519
520static bool canDecodeBlob(unsigned Code, unsigned BlockID) {
521 return BlockID == bitc::METADATA_BLOCK_ID && Code == bitc::METADATA_STRINGS;
522}
523
524Error BitcodeAnalyzer::decodeMetadataStringsBlob(StringRef Indent,
526 StringRef Blob,
527 raw_ostream &OS) {
528 if (Blob.empty())
529 return reportError("Cannot decode empty blob.");
530
531 if (Record.size() != 2)
532 return reportError(
533 "Decoding metadata strings blob needs two record entries.");
534
535 unsigned NumStrings = Record[0];
536 unsigned StringsOffset = Record[1];
537 OS << " num-strings = " << NumStrings << " {\n";
538
539 StringRef Lengths = Blob.slice(0, StringsOffset);
540 SimpleBitstreamCursor R(Lengths);
541 StringRef Strings = Blob.drop_front(StringsOffset);
542 do {
543 if (R.AtEndOfStream())
544 return reportError("bad length");
545
547 if (Error E = R.ReadVBR(6).moveInto(Size))
548 return E;
549 if (Strings.size() < Size)
550 return reportError("truncated chars");
551
552 OS << Indent << " '";
553 OS.write_escaped(Strings.slice(0, Size), /*hex=*/true);
554 OS << "'\n";
555 Strings = Strings.drop_front(Size);
556 } while (--NumStrings);
557
558 OS << Indent << " }";
559 return Error::success();
560}
561
563 std::optional<StringRef> BlockInfoBuffer)
564 : Stream(Buffer) {
565 if (BlockInfoBuffer)
566 BlockInfoStream.emplace(*BlockInfoBuffer);
567}
568
569Error BitcodeAnalyzer::analyze(std::optional<BCDumpOptions> O,
570 std::optional<StringRef> CheckHash) {
571 if (Error E = analyzeHeader(O, Stream).moveInto(CurStreamType))
572 return E;
573
574 Stream.setBlockInfo(&BlockInfo);
575
576 // Read block info from BlockInfoStream, if specified.
577 // The block info must be a top-level block.
578 if (BlockInfoStream) {
579 BitstreamCursor BlockInfoCursor(*BlockInfoStream);
580 if (Error E = analyzeHeader(O, BlockInfoCursor).takeError())
581 return E;
582
583 while (!BlockInfoCursor.AtEndOfStream()) {
584 Expected<unsigned> MaybeCode = BlockInfoCursor.ReadCode();
585 if (!MaybeCode)
586 return MaybeCode.takeError();
587 if (MaybeCode.get() != bitc::ENTER_SUBBLOCK)
588 return reportError("Invalid record at top-level in block info file");
589
590 Expected<unsigned> MaybeBlockID = BlockInfoCursor.ReadSubBlockID();
591 if (!MaybeBlockID)
592 return MaybeBlockID.takeError();
593 if (MaybeBlockID.get() == bitc::BLOCKINFO_BLOCK_ID) {
594 std::optional<BitstreamBlockInfo> NewBlockInfo;
595 if (Error E =
596 BlockInfoCursor.ReadBlockInfoBlock(/*ReadBlockInfoNames=*/true)
597 .moveInto(NewBlockInfo))
598 return E;
599 if (!NewBlockInfo)
600 return reportError("Malformed BlockInfoBlock in block info file");
601 BlockInfo = std::move(*NewBlockInfo);
602 break;
603 }
604
605 if (Error Err = BlockInfoCursor.SkipBlock())
606 return Err;
607 }
608 }
609
610 // Parse the top-level structure. We only allow blocks at the top-level.
611 while (!Stream.AtEndOfStream()) {
612 Expected<unsigned> MaybeCode = Stream.ReadCode();
613 if (!MaybeCode)
614 return MaybeCode.takeError();
615 if (MaybeCode.get() != bitc::ENTER_SUBBLOCK)
616 return reportError("Invalid record at top-level");
617
618 Expected<unsigned> MaybeBlockID = Stream.ReadSubBlockID();
619 if (!MaybeBlockID)
620 return MaybeBlockID.takeError();
621
622 if (Error E = parseBlock(MaybeBlockID.get(), 0, O, CheckHash))
623 return E;
624 ++NumTopBlocks;
625 }
626
627 return Error::success();
628}
629
631 std::optional<StringRef> Filename) {
632 uint64_t BufferSizeBits = Stream.getBitcodeBytes().size() * CHAR_BIT;
633 // Print a summary of the read file.
634 O.OS << "Summary ";
635 if (Filename)
636 O.OS << "of " << Filename->data() << ":\n";
637 O.OS << " Total size: ";
638 printSize(O.OS, BufferSizeBits);
639 O.OS << "\n";
640 O.OS << " Stream type: ";
641 switch (CurStreamType) {
642 case UnknownBitstream:
643 O.OS << "unknown\n";
644 break;
645 case LLVMIRBitstream:
646 O.OS << "LLVM IR\n";
647 break;
649 O.OS << "Clang Serialized AST\n";
650 break;
652 O.OS << "Clang Serialized Diagnostics\n";
653 break;
655 O.OS << "LLVM Remarks\n";
656 break;
657 }
658 O.OS << " # Toplevel Blocks: " << NumTopBlocks << "\n";
659 O.OS << "\n";
660
661 // Emit per-block stats.
662 O.OS << "Per-block Summary:\n";
663 for (const auto &Stat : BlockIDStats) {
664 O.OS << " Block ID #" << Stat.first;
665 if (std::optional<const char *> BlockName =
666 GetBlockName(Stat.first, BlockInfo, CurStreamType))
667 O.OS << " (" << *BlockName << ")";
668 O.OS << ":\n";
669
670 const PerBlockIDStats &Stats = Stat.second;
671 O.OS << " Num Instances: " << Stats.NumInstances << "\n";
672 O.OS << " Total Size: ";
673 printSize(O.OS, Stats.NumBits);
674 O.OS << "\n";
675 double pct = (Stats.NumBits * 100.0) / BufferSizeBits;
676 O.OS << " Percent of file: " << format("%2.4f%%", pct) << "\n";
677 if (Stats.NumInstances > 1) {
678 O.OS << " Average Size: ";
679 printSize(O.OS, Stats.NumBits / (double)Stats.NumInstances);
680 O.OS << "\n";
681 O.OS << " Tot/Avg SubBlocks: " << Stats.NumSubBlocks << "/"
682 << Stats.NumSubBlocks / (double)Stats.NumInstances << "\n";
683 O.OS << " Tot/Avg Abbrevs: " << Stats.NumAbbrevs << "/"
684 << Stats.NumAbbrevs / (double)Stats.NumInstances << "\n";
685 O.OS << " Tot/Avg Records: " << Stats.NumRecords << "/"
686 << Stats.NumRecords / (double)Stats.NumInstances << "\n";
687 } else {
688 O.OS << " Num SubBlocks: " << Stats.NumSubBlocks << "\n";
689 O.OS << " Num Abbrevs: " << Stats.NumAbbrevs << "\n";
690 O.OS << " Num Records: " << Stats.NumRecords << "\n";
691 }
692 if (Stats.NumRecords) {
693 double pct = (Stats.NumAbbreviatedRecords * 100.0) / Stats.NumRecords;
694 O.OS << " Percent Abbrevs: " << format("%2.4f%%", pct) << "\n";
695 }
696 O.OS << "\n";
697
698 // Print a histogram of the codes we see.
699 if (O.Histogram && !Stats.CodeFreq.empty()) {
700 std::vector<std::pair<unsigned, unsigned>> FreqPairs; // <freq,code>
701 for (unsigned i = 0, e = Stats.CodeFreq.size(); i != e; ++i)
702 if (unsigned Freq = Stats.CodeFreq[i].NumInstances)
703 FreqPairs.push_back(std::make_pair(Freq, i));
704 llvm::stable_sort(FreqPairs);
705 std::reverse(FreqPairs.begin(), FreqPairs.end());
706
707 O.OS << "\tRecord Histogram:\n";
708 O.OS << "\t\t Count # Bits b/Rec % Abv Record Kind\n";
709 for (const auto &FreqPair : FreqPairs) {
710 const PerRecordStats &RecStats = Stats.CodeFreq[FreqPair.second];
711
712 O.OS << format("\t\t%7d %9lu", RecStats.NumInstances,
713 (unsigned long)RecStats.TotalBits);
714
715 if (RecStats.NumInstances > 1)
716 O.OS << format(" %9.1f",
717 (double)RecStats.TotalBits / RecStats.NumInstances);
718 else
719 O.OS << " ";
720
721 if (RecStats.NumAbbrev)
722 O.OS << format(" %7.2f", (double)RecStats.NumAbbrev /
723 RecStats.NumInstances * 100);
724 else
725 O.OS << " ";
726
727 O.OS << " ";
728 if (std::optional<const char *> CodeName = GetCodeName(
729 FreqPair.second, Stat.first, BlockInfo, CurStreamType))
730 O.OS << *CodeName << "\n";
731 else
732 O.OS << "UnknownCode" << FreqPair.second << "\n";
733 }
734 O.OS << "\n";
735 }
736 }
737}
738
739Error BitcodeAnalyzer::parseBlock(unsigned BlockID, unsigned IndentLevel,
740 std::optional<BCDumpOptions> O,
741 std::optional<StringRef> CheckHash) {
742 std::string Indent(IndentLevel * 2, ' ');
743 uint64_t BlockBitStart = Stream.GetCurrentBitNo();
744
745 // Get the statistics for this BlockID.
746 PerBlockIDStats &BlockStats = BlockIDStats[BlockID];
747
748 BlockStats.NumInstances++;
749
750 // BLOCKINFO is a special part of the stream.
751 bool DumpRecords = O.has_value();
752 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
753 if (O && !O->DumpBlockinfo)
754 O->OS << Indent << "<BLOCKINFO_BLOCK/>\n";
755 std::optional<BitstreamBlockInfo> NewBlockInfo;
756 if (Error E = Stream.ReadBlockInfoBlock(/*ReadBlockInfoNames=*/true)
757 .moveInto(NewBlockInfo))
758 return E;
759 if (!NewBlockInfo)
760 return reportError("Malformed BlockInfoBlock");
761 BlockInfo = std::move(*NewBlockInfo);
762 if (Error Err = Stream.JumpToBit(BlockBitStart))
763 return Err;
764 // It's not really interesting to dump the contents of the blockinfo
765 // block, so only do it if the user explicitly requests it.
766 DumpRecords = O && O->DumpBlockinfo;
767 }
768
769 unsigned NumWords = 0;
770 if (Error Err = Stream.EnterSubBlock(BlockID, &NumWords))
771 return Err;
772
773 // Keep it for later, when we see a MODULE_HASH record
774 uint64_t BlockEntryPos = Stream.getCurrentByteNo();
775
776 std::optional<const char *> BlockName;
777 if (DumpRecords) {
778 O->OS << Indent << "<";
779 if ((BlockName = GetBlockName(BlockID, BlockInfo, CurStreamType)))
780 O->OS << *BlockName;
781 else
782 O->OS << "UnknownBlock" << BlockID;
783
784 if (!O->Symbolic && BlockName)
785 O->OS << " BlockID=" << BlockID;
786
787 O->OS << " NumWords=" << NumWords
788 << " BlockCodeSize=" << Stream.getAbbrevIDWidth() << ">\n";
789 }
790
792
793 // Keep the offset to the metadata index if seen.
794 uint64_t MetadataIndexOffset = 0;
795
796 // Read all the records for this block.
797 while (true) {
798 if (Stream.AtEndOfStream())
799 return reportError("Premature end of bitstream");
800
801 uint64_t RecordStartBit = Stream.GetCurrentBitNo();
802
803 BitstreamEntry Entry;
805 .moveInto(Entry))
806 return E;
807
808 switch (Entry.Kind) {
810 return reportError("malformed bitcode file");
812 uint64_t BlockBitEnd = Stream.GetCurrentBitNo();
813 BlockStats.NumBits += BlockBitEnd - BlockBitStart;
814 if (DumpRecords) {
815 O->OS << Indent << "</";
816 if (BlockName)
817 O->OS << *BlockName << ">\n";
818 else
819 O->OS << "UnknownBlock" << BlockID << ">\n";
820 }
821 return Error::success();
822 }
823
825 uint64_t SubBlockBitStart = Stream.GetCurrentBitNo();
826 if (Error E = parseBlock(Entry.ID, IndentLevel + 1, O, CheckHash))
827 return E;
828 ++BlockStats.NumSubBlocks;
829 uint64_t SubBlockBitEnd = Stream.GetCurrentBitNo();
830
831 // Don't include subblock sizes in the size of this block.
832 BlockBitStart += SubBlockBitEnd - SubBlockBitStart;
833 continue;
834 }
836 // The interesting case.
837 break;
838 }
839
840 if (Entry.ID == bitc::DEFINE_ABBREV) {
841 if (Error Err = Stream.ReadAbbrevRecord())
842 return Err;
843 ++BlockStats.NumAbbrevs;
844 continue;
845 }
846
847 Record.clear();
848
849 ++BlockStats.NumRecords;
850
851 StringRef Blob;
852 uint64_t CurrentRecordPos = Stream.GetCurrentBitNo();
853 unsigned Code;
854 if (Error E = Stream.readRecord(Entry.ID, Record, &Blob).moveInto(Code))
855 return E;
856
857 // Increment the # occurrences of this code.
858 if (BlockStats.CodeFreq.size() <= Code)
859 BlockStats.CodeFreq.resize(Code + 1);
860 BlockStats.CodeFreq[Code].NumInstances++;
861 BlockStats.CodeFreq[Code].TotalBits +=
862 Stream.GetCurrentBitNo() - RecordStartBit;
863 if (Entry.ID != bitc::UNABBREV_RECORD) {
864 BlockStats.CodeFreq[Code].NumAbbrev++;
865 ++BlockStats.NumAbbreviatedRecords;
866 }
867
868 if (DumpRecords) {
869 O->OS << Indent << " <";
870 std::optional<const char *> CodeName =
871 GetCodeName(Code, BlockID, BlockInfo, CurStreamType);
872 if (CodeName)
873 O->OS << *CodeName;
874 else
875 O->OS << "UnknownCode" << Code;
876 if (!O->Symbolic && CodeName)
877 O->OS << " codeid=" << Code;
878 const BitCodeAbbrev *Abbv = nullptr;
879 if (Entry.ID != bitc::UNABBREV_RECORD) {
880 Expected<const BitCodeAbbrev *> MaybeAbbv = Stream.getAbbrev(Entry.ID);
881 if (!MaybeAbbv)
882 return MaybeAbbv.takeError();
883 Abbv = MaybeAbbv.get();
884 O->OS << " abbrevid=" << Entry.ID;
885 }
886
887 for (unsigned i = 0, e = Record.size(); i != e; ++i)
888 O->OS << " op" << i << "=" << (int64_t)Record[i];
889
890 // If we found a metadata index, let's verify that we had an offset
891 // before and validate its forward reference offset was correct!
892 if (BlockID == bitc::METADATA_BLOCK_ID) {
893 if (Code == bitc::METADATA_INDEX_OFFSET) {
894 if (Record.size() != 2)
895 O->OS << "(Invalid record)";
896 else {
897 auto Offset = Record[0] + (Record[1] << 32);
898 MetadataIndexOffset = Stream.GetCurrentBitNo() + Offset;
899 }
900 }
901 if (Code == bitc::METADATA_INDEX) {
902 O->OS << " (offset ";
903 if (MetadataIndexOffset == RecordStartBit)
904 O->OS << "match)";
905 else
906 O->OS << "mismatch: " << MetadataIndexOffset << " vs "
907 << RecordStartBit << ")";
908 }
909 }
910
911 // If we found a module hash, let's verify that it matches!
912 if (BlockID == bitc::MODULE_BLOCK_ID && Code == bitc::MODULE_CODE_HASH &&
913 CheckHash) {
914 if (Record.size() != 5)
915 O->OS << " (invalid)";
916 else {
917 // Recompute the hash and compare it to the one in the bitcode
918 SHA1 Hasher;
919 std::array<uint8_t, 20> Hash;
920 Hasher.update(*CheckHash);
921 {
922 int BlockSize = (CurrentRecordPos / 8) - BlockEntryPos;
923 auto Ptr = Stream.getPointerToByte(BlockEntryPos, BlockSize);
924 Hasher.update(ArrayRef<uint8_t>(Ptr, BlockSize));
925 Hash = Hasher.result();
926 }
927 std::array<uint8_t, 20> RecordedHash;
928 int Pos = 0;
929 for (auto &Val : Record) {
930 assert(!(Val >> 32) && "Unexpected high bits set");
931 support::endian::write32be(&RecordedHash[Pos], Val);
932 Pos += 4;
933 }
934 if (Hash == RecordedHash)
935 O->OS << " (match)";
936 else
937 O->OS << " (!mismatch!)";
938 }
939 }
940
941 O->OS << "/>";
942
943 if (Abbv) {
944 for (unsigned i = 1, e = Abbv->getNumOperandInfos(); i != e; ++i) {
945 const BitCodeAbbrevOp &Op = Abbv->getOperandInfo(i);
946 if (!Op.isEncoding() || Op.getEncoding() != BitCodeAbbrevOp::Array)
947 continue;
948 assert(i + 2 == e && "Array op not second to last");
949 std::string Str;
950 bool ArrayIsPrintable = true;
951 for (unsigned j = i - 1, je = Record.size(); j != je; ++j) {
952 if (!isPrint(static_cast<unsigned char>(Record[j]))) {
953 ArrayIsPrintable = false;
954 break;
955 }
956 Str += (char)Record[j];
957 }
958 if (ArrayIsPrintable)
959 O->OS << " record string = '" << Str << "'";
960 break;
961 }
962 }
963
964 if (Blob.data()) {
965 if (canDecodeBlob(Code, BlockID)) {
966 if (Error E = decodeMetadataStringsBlob(Indent, Record, Blob, O->OS))
967 return E;
968 } else {
969 O->OS << " blob data = ";
970 if (O->ShowBinaryBlobs) {
971 O->OS << "'";
972 O->OS.write_escaped(Blob, /*hex=*/true) << "'";
973 } else {
974 bool BlobIsPrintable = true;
975 for (char C : Blob)
976 if (!isPrint(static_cast<unsigned char>(C))) {
977 BlobIsPrintable = false;
978 break;
979 }
980
981 if (BlobIsPrintable)
982 O->OS << "'" << Blob << "'";
983 else
984 O->OS << "unprintable, " << Blob.size() << " bytes.";
985 }
986 }
987 }
988
989 O->OS << "\n";
990 }
991
992 // Make sure that we can skip the current record.
993 if (Error Err = Stream.JumpToBit(CurrentRecordPos))
994 return Err;
995 if (Expected<unsigned> Skipped = Stream.skipRecord(Entry.ID))
996 ; // Do nothing.
997 else
998 return Skipped.takeError();
999 }
1000}
1001
#define STRINGIFY_CODE(PREFIX, CODE)
static bool canDecodeBlob(unsigned Code, unsigned BlockID)
static std::optional< const char * > GetBlockName(unsigned BlockID, const BitstreamBlockInfo &BlockInfo, CurStreamTypeType CurStreamType)
Return a symbolic block name if known, otherwise return null.
static Expected< CurStreamTypeType > ReadSignature(BitstreamCursor &Stream)
static std::optional< const char * > GetCodeName(unsigned CodeID, unsigned BlockID, const BitstreamBlockInfo &BlockInfo, CurStreamTypeType CurStreamType)
Return a symbolic code name if known, otherwise return null.
static void printSize(raw_ostream &OS, double Bits)
static Expected< CurStreamTypeType > analyzeHeader(std::optional< BCDumpOptions > O, BitstreamCursor &Stream)
static Error reportError(StringRef Message)
Analysis containing CSE Info
Definition: CSEInfo.cpp:27
uint64_t Size
#define FUNCTION(NAME, NARG, ROUND_MODE, INTRINSIC)
#define NODE(NodeKind)
#define KIND(ENUM, FIELD)
Definition: LVSupport.h:96
#define ENTRY(ASMNAME, ENUM)
block placement Basic Block Placement Stats
#define TOKEN(Name)
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
raw_pwrite_stream & OS
static const int BlockSize
Definition: TarWriter.cpp:33
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
Definition: ArrayRef.h:41
size_t size() const
size - Get the array size.
Definition: ArrayRef.h:165
const T * data() const
Definition: ArrayRef.h:162
BitCodeAbbrevOp - This describes one or more operands in an abbreviation.
Definition: BitCodes.h:33
BitCodeAbbrev - This class represents an abbreviation record.
Definition: BitCodes.h:103
unsigned getNumOperandInfos() const
Definition: BitCodes.h:112
const BitCodeAbbrevOp & getOperandInfo(unsigned N) const
Definition: BitCodes.h:115
BitcodeAnalyzer(StringRef Buffer, std::optional< StringRef > BlockInfoBuffer=std::nullopt)
Error analyze(std::optional< BCDumpOptions > O=std::nullopt, std::optional< StringRef > CheckHash=std::nullopt)
Analyze the bitcode file.
void printStats(BCDumpOptions O, std::optional< StringRef > Filename=std::nullopt)
Print stats about the bitcode file.
This class maintains the abbreviations read from a block info block.
const BlockInfo * getBlockInfo(unsigned BlockID) const
If there is block info for the specified ID, return it, otherwise return null.
This represents a position within a bitcode file, implemented on top of a SimpleBitstreamCursor.
Error JumpToBit(uint64_t BitNo)
Reset the stream to the specified bit number.
uint64_t GetCurrentBitNo() const
Return the bit # of the bit we are reading.
Expected< unsigned > ReadSubBlockID()
Having read the ENTER_SUBBLOCK code, read the BlockID for the block.
@ AF_DontAutoprocessAbbrevs
If this flag is used, abbrev entries are returned just like normal records.
ArrayRef< uint8_t > getBitcodeBytes() const
Expected< word_t > Read(unsigned NumBits)
Expected< BitstreamEntry > advance(unsigned Flags=0)
Advance the current bitstream, returning the next entry in the stream.
Expected< const BitCodeAbbrev * > getAbbrev(unsigned AbbrevID)
Return the abbreviation for the specified AbbrevId.
void setBlockInfo(BitstreamBlockInfo *BI)
Set the block info to be used by this BitstreamCursor to interpret abbreviated records.
const uint8_t * getPointerToByte(uint64_t ByteNo, uint64_t NumBytes)
Get a pointer into the bitstream at the specified byte offset.
Expected< unsigned > readRecord(unsigned AbbrevID, SmallVectorImpl< uint64_t > &Vals, StringRef *Blob=nullptr)
Error EnterSubBlock(unsigned BlockID, unsigned *NumWordsP=nullptr)
Having read the ENTER_SUBBLOCK abbrevid, and enter the block.
Error SkipBlock()
Having read the ENTER_SUBBLOCK abbrevid and a BlockID, skip over the body of this block.
uint64_t getCurrentByteNo() const
Expected< unsigned > ReadCode()
Expected< std::optional< BitstreamBlockInfo > > ReadBlockInfoBlock(bool ReadBlockInfoNames=false)
Read and return a block info block from the bitstream.
unsigned getAbbrevIDWidth() const
Return the number of bits used to encode an abbrev #.
This class represents an Operation in the Expression.
Lightweight error class with error context and mandatory checking.
Definition: Error.h:160
static ErrorSuccess success()
Create a success value.
Definition: Error.h:334
Tagged union holding either a T or a Error.
Definition: Error.h:474
Error takeError()
Take ownership of the stored error.
Definition: Error.h:601
reference get()
Returns a reference to the stored T value.
Definition: Error.h:571
A class that wrap the SHA1 algorithm.
Definition: SHA1.h:26
void update(ArrayRef< uint8_t > Data)
Digest more data.
Definition: SHA1.cpp:208
This represents a position within a bitstream.
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition: SmallVector.h:1209
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
constexpr bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:134
StringRef drop_front(size_t N=1) const
Return a StringRef equal to 'this' but with the first N elements dropped.
Definition: StringRef.h:605
StringRef slice(size_t Start, size_t End) const
Return a reference to the substring from [Start, End).
Definition: StringRef.h:680
constexpr const char * data() const
data - Get a pointer to the start of the string (which may not be null terminated).
Definition: StringRef.h:131
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
raw_ostream & write_escaped(StringRef Str, bool UseHexEscapes=false)
Output Str, turning '\', '\t', ' ', '"', and anything that doesn't satisfy llvm::isPrint into an esca...
@ C
The default llvm calling convention, compatible with C.
Definition: CallingConv.h:34
@ METADATA_INDEX_OFFSET
Definition: LLVMBitCodes.h:362
@ CST_CODE_BLOCKADDRESS
Definition: LLVMBitCodes.h:398
@ BLOCKINFO_CODE_BLOCKNAME
Definition: BitCodeEnums.h:82
@ BLOCKINFO_CODE_SETRECORDNAME
Definition: BitCodeEnums.h:83
@ BLOCKINFO_CODE_SETBID
Definition: BitCodeEnums.h:81
@ USELIST_CODE_DEFAULT
Definition: LLVMBitCodes.h:649
@ PARAMATTR_BLOCK_ID
Definition: LLVMBitCodes.h:33
@ TYPE_BLOCK_ID_NEW
Definition: LLVMBitCodes.h:48
@ CONSTANTS_BLOCK_ID
Definition: LLVMBitCodes.h:36
@ PARAMATTR_GROUP_BLOCK_ID
Definition: LLVMBitCodes.h:34
@ METADATA_KIND_BLOCK_ID
Definition: LLVMBitCodes.h:57
@ IDENTIFICATION_BLOCK_ID
Definition: LLVMBitCodes.h:42
@ GLOBALVAL_SUMMARY_BLOCK_ID
Definition: LLVMBitCodes.h:53
@ METADATA_ATTACHMENT_ID
Definition: LLVMBitCodes.h:46
@ METADATA_BLOCK_ID
Definition: LLVMBitCodes.h:45
@ FUNCTION_BLOCK_ID
Definition: LLVMBitCodes.h:37
@ FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID
Definition: LLVMBitCodes.h:61
@ MODULE_STRTAB_BLOCK_ID
Definition: LLVMBitCodes.h:52
@ VALUE_SYMTAB_BLOCK_ID
Definition: LLVMBitCodes.h:44
@ OPERAND_BUNDLE_TAGS_BLOCK_ID
Definition: LLVMBitCodes.h:55
@ USELIST_BLOCK_ID
Definition: LLVMBitCodes.h:50
@ BLOCKINFO_BLOCK_ID
BLOCKINFO_BLOCK is used to define metadata about blocks, for example, standard abbrevs that should be...
Definition: BitCodeEnums.h:69
@ FIRST_APPLICATION_BLOCKID
Definition: BitCodeEnums.h:72
@ DEFINE_ABBREV
DEFINE_ABBREV - Defines an abbrev for the current block.
Definition: BitCodeEnums.h:53
@ OPERAND_BUNDLE_TAG
Definition: LLVMBitCodes.h:183
@ PARAMATTR_CODE_ENTRY_OLD
Definition: LLVMBitCodes.h:128
@ PARAMATTR_GRP_CODE_ENTRY
Definition: LLVMBitCodes.h:131
@ PARAMATTR_CODE_ENTRY
Definition: LLVMBitCodes.h:130
NodeAddr< CodeNode * > Code
Definition: RDFGraph.h:388
void write32be(void *P, uint32_t V)
Definition: Endian.h:476
uint32_t read32le(const void *P)
Definition: Endian.h:424
bool isPrint(int c)
Definition: Locale.cpp:13
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
@ Offset
Definition: DWP.cpp:456
void stable_sort(R &&Range)
Definition: STLExtras.h:1995
auto size(R &&Range, std::enable_if_t< std::is_base_of< std::random_access_iterator_tag, typename std::iterator_traits< decltype(Range.begin())>::iterator_category >::value, void > *=nullptr)
Get the size of a range.
Definition: STLExtras.h:1680
@ BWH_OffsetField
Definition: BitCodeEnums.h:29
@ BWH_VersionField
Definition: BitCodeEnums.h:28
@ BWH_MagicField
Definition: BitCodeEnums.h:27
@ BWH_HeaderSize
Definition: BitCodeEnums.h:32
@ BWH_CPUTypeField
Definition: BitCodeEnums.h:31
@ BWH_SizeField
Definition: BitCodeEnums.h:30
Error createStringError(std::error_code EC, char const *Fmt, const Ts &... Vals)
Create formatted StringError object.
Definition: Error.h:1258
@ MODULE
Definition: Attributor.h:6427
FormattedNumber format_hex(uint64_t N, unsigned Width, bool Upper=false)
format_hex - Output N as a fixed width hexadecimal.
Definition: Format.h:187
format_object< Ts... > format(const char *Fmt, const Ts &... Vals)
These are helper functions used to produce formatted output.
Definition: Format.h:125
CurStreamTypeType
CurStreamTypeType - A type for CurStreamType.
@ UnknownBitstream
@ ClangSerializedDiagnosticsBitstream
@ LLVMIRBitstream
@ ClangSerializedASTBitstream
@ LLVMBitstreamRemarks
bool SkipBitcodeWrapperHeader(const unsigned char *&BufPtr, const unsigned char *&BufEnd, bool VerifyBufferSize)
SkipBitcodeWrapperHeader - Some systems wrap bc files with a special header for padding or other reas...
bool isBitcodeWrapper(const unsigned char *BufPtr, const unsigned char *BufEnd)
isBitcodeWrapper - Return true if the given bytes are the magic bytes for an LLVM IR bitcode wrapper.
This contains information emitted to BLOCKINFO_BLOCK blocks.
When advancing through a bitstream cursor, each advance can discover a few different kinds of entries...