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comparison tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp @ 148:63bd29f05246

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merged
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 14 Aug 2019 19:46:37 +0900
parents c2174574ed3a
children
comparison
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146:3fc4d5c3e21e 148:63bd29f05246
1 //===-- llvm-bcanalyzer.cpp - Bitcode Analyzer --------------------------===// 1 //===-- llvm-bcanalyzer.cpp - Bitcode Analyzer --------------------------===//
2 // 2 //
3 // The LLVM Compiler Infrastructure 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // 4 // See https://llvm.org/LICENSE.txt for license information.
5 // This file is distributed under the University of Illinois Open Source 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 // License. See LICENSE.TXT for details.
7 // 6 //
8 //===----------------------------------------------------------------------===// 7 //===----------------------------------------------------------------------===//
9 // 8 //
10 // This tool may be invoked in the following manner: 9 // This tool may be invoked in the following manner:
11 // llvm-bcanalyzer [options] - Read LLVM bitcode from stdin 10 // llvm-bcanalyzer [options] - Read LLVM bitcode from stdin
25 // format that shows the containment and relationships of the information in 24 // format that shows the containment and relationships of the information in
26 // the bitcode file (-dump option). 25 // the bitcode file (-dump option).
27 // 26 //
28 //===----------------------------------------------------------------------===// 27 //===----------------------------------------------------------------------===//
29 28
30 #include "llvm/ADT/StringExtras.h" 29 #include "llvm/ADT/Optional.h"
31 #include "llvm/Bitcode/BitcodeReader.h" 30 #include "llvm/Bitcode/BitcodeAnalyzer.h"
32 #include "llvm/Bitcode/BitstreamReader.h"
33 #include "llvm/Bitcode/LLVMBitCodes.h"
34 #include "llvm/Support/CommandLine.h" 31 #include "llvm/Support/CommandLine.h"
35 #include "llvm/Support/Format.h" 32 #include "llvm/Support/Error.h"
36 #include "llvm/Support/ManagedStatic.h" 33 #include "llvm/Support/InitLLVM.h"
37 #include "llvm/Support/MemoryBuffer.h" 34 #include "llvm/Support/MemoryBuffer.h"
38 #include "llvm/Support/PrettyStackTrace.h"
39 #include "llvm/Support/SHA1.h"
40 #include "llvm/Support/Signals.h"
41 #include "llvm/Support/raw_ostream.h" 35 #include "llvm/Support/raw_ostream.h"
36 #include <memory>
42 using namespace llvm; 37 using namespace llvm;
43 38
44 static cl::opt<std::string> 39 static cl::opt<std::string>
45 InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-")); 40 InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
46 41
47 static cl::opt<bool> Dump("dump", cl::desc("Dump low level bitcode trace")); 42 static cl::opt<bool> Dump("dump", cl::desc("Dump low level bitcode trace"));
48 43
49 //===----------------------------------------------------------------------===// 44 //===----------------------------------------------------------------------===//
50 // Bitcode specific analysis. 45 // Bitcode specific analysis.
51 //===----------------------------------------------------------------------===// 46 //===----------------------------------------------------------------------===//
52 47
53 static cl::opt<bool> NoHistogram("disable-histogram", 48 static cl::opt<bool> NoHistogram("disable-histogram",
54 cl::desc("Do not print per-code histogram")); 49 cl::desc("Do not print per-code histogram"));
55 50
56 static cl::opt<bool> 51 static cl::opt<bool> NonSymbolic("non-symbolic",
57 NonSymbolic("non-symbolic", 52 cl::desc("Emit numeric info in dump even if"
58 cl::desc("Emit numeric info in dump even if" 53 " symbolic info is available"));
59 " symbolic info is available"));
60 54
61 static cl::opt<std::string> 55 static cl::opt<std::string>
62 BlockInfoFilename("block-info", 56 BlockInfoFilename("block-info",
63 cl::desc("Use the BLOCK_INFO from the given file")); 57 cl::desc("Use the BLOCK_INFO from the given file"));
64 58
65 static cl::opt<bool> 59 static cl::opt<bool>
66 ShowBinaryBlobs("show-binary-blobs", 60 ShowBinaryBlobs("show-binary-blobs",
67 cl::desc("Print binary blobs using hex escapes")); 61 cl::desc("Print binary blobs using hex escapes"));
68 62
69 static cl::opt<std::string> CheckHash( 63 static cl::opt<std::string> CheckHash(
70 "check-hash", 64 "check-hash",
71 cl::desc("Check module hash using the argument as a string table")); 65 cl::desc("Check module hash using the argument as a string table"));
72 66
73 namespace { 67 static Error reportError(StringRef Message) {
74 68 return createStringError(std::errc::illegal_byte_sequence, Message.data());
75 /// CurStreamTypeType - A type for CurStreamType
76 enum CurStreamTypeType {
77 UnknownBitstream,
78 LLVMIRBitstream
79 };
80
81 } 69 }
82 70
83 /// GetBlockName - Return a symbolic block name if known, otherwise return 71 static Expected<std::unique_ptr<MemoryBuffer>> openBitcodeFile(StringRef Path) {
84 /// null. 72 // Read the input file.
85 static const char *GetBlockName(unsigned BlockID, 73 Expected<std::unique_ptr<MemoryBuffer>> MemBufOrErr =
86 const BitstreamBlockInfo &BlockInfo, 74 errorOrToExpected(MemoryBuffer::getFileOrSTDIN(Path));
87 CurStreamTypeType CurStreamType) { 75 if (Error E = MemBufOrErr.takeError())
88 // Standard blocks for all bitcode files. 76 return std::move(E);
89 if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
90 if (BlockID == bitc::BLOCKINFO_BLOCK_ID)
91 return "BLOCKINFO_BLOCK";
92 return nullptr;
93 }
94 77
95 // Check to see if we have a blockinfo record for this block, with a name. 78 std::unique_ptr<MemoryBuffer> MemBuf = std::move(*MemBufOrErr);
96 if (const BitstreamBlockInfo::BlockInfo *Info =
97 BlockInfo.getBlockInfo(BlockID)) {
98 if (!Info->Name.empty())
99 return Info->Name.c_str();
100 }
101 79
102 80 if (MemBuf->getBufferSize() & 3)
103 if (CurStreamType != LLVMIRBitstream) return nullptr; 81 return reportError(
104 82 "Bitcode stream should be a multiple of 4 bytes in length");
105 switch (BlockID) { 83 return std::move(MemBuf);
106 default: return nullptr;
107 case bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID: return "OPERAND_BUNDLE_TAGS_BLOCK";
108 case bitc::MODULE_BLOCK_ID: return "MODULE_BLOCK";
109 case bitc::PARAMATTR_BLOCK_ID: return "PARAMATTR_BLOCK";
110 case bitc::PARAMATTR_GROUP_BLOCK_ID: return "PARAMATTR_GROUP_BLOCK_ID";
111 case bitc::TYPE_BLOCK_ID_NEW: return "TYPE_BLOCK_ID";
112 case bitc::CONSTANTS_BLOCK_ID: return "CONSTANTS_BLOCK";
113 case bitc::FUNCTION_BLOCK_ID: return "FUNCTION_BLOCK";
114 case bitc::IDENTIFICATION_BLOCK_ID:
115 return "IDENTIFICATION_BLOCK_ID";
116 case bitc::VALUE_SYMTAB_BLOCK_ID: return "VALUE_SYMTAB";
117 case bitc::METADATA_BLOCK_ID: return "METADATA_BLOCK";
118 case bitc::METADATA_KIND_BLOCK_ID: return "METADATA_KIND_BLOCK";
119 case bitc::METADATA_ATTACHMENT_ID: return "METADATA_ATTACHMENT_BLOCK";
120 case bitc::USELIST_BLOCK_ID: return "USELIST_BLOCK_ID";
121 case bitc::GLOBALVAL_SUMMARY_BLOCK_ID:
122 return "GLOBALVAL_SUMMARY_BLOCK";
123 case bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID:
124 return "FULL_LTO_GLOBALVAL_SUMMARY_BLOCK";
125 case bitc::MODULE_STRTAB_BLOCK_ID: return "MODULE_STRTAB_BLOCK";
126 case bitc::STRTAB_BLOCK_ID: return "STRTAB_BLOCK";
127 case bitc::SYMTAB_BLOCK_ID: return "SYMTAB_BLOCK";
128 }
129 } 84 }
130 85
131 /// GetCodeName - Return a symbolic code name if known, otherwise return 86 int main(int argc, char **argv) {
132 /// null. 87 InitLLVM X(argc, argv);
133 static const char *GetCodeName(unsigned CodeID, unsigned BlockID, 88 cl::ParseCommandLineOptions(argc, argv, "llvm-bcanalyzer file analyzer\n");
134 const BitstreamBlockInfo &BlockInfo, 89 ExitOnError ExitOnErr("llvm-bcanalyzer: ");
135 CurStreamTypeType CurStreamType) {
136 // Standard blocks for all bitcode files.
137 if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
138 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
139 switch (CodeID) {
140 default: return nullptr;
141 case bitc::BLOCKINFO_CODE_SETBID: return "SETBID";
142 case bitc::BLOCKINFO_CODE_BLOCKNAME: return "BLOCKNAME";
143 case bitc::BLOCKINFO_CODE_SETRECORDNAME: return "SETRECORDNAME";
144 }
145 }
146 return nullptr;
147 }
148 90
149 // Check to see if we have a blockinfo record for this record, with a name. 91 std::unique_ptr<MemoryBuffer> MB = ExitOnErr(openBitcodeFile(InputFilename));
150 if (const BitstreamBlockInfo::BlockInfo *Info = 92 std::unique_ptr<MemoryBuffer> BlockInfoMB = nullptr;
151 BlockInfo.getBlockInfo(BlockID)) { 93 if (!BlockInfoFilename.empty())
152 for (unsigned i = 0, e = Info->RecordNames.size(); i != e; ++i) 94 BlockInfoMB = ExitOnErr(openBitcodeFile(BlockInfoFilename));
153 if (Info->RecordNames[i].first == CodeID)
154 return Info->RecordNames[i].second.c_str();
155 }
156 95
96 BitcodeAnalyzer BA(MB->getBuffer(),
97 BlockInfoMB ? Optional<StringRef>(BlockInfoMB->getBuffer())
98 : None);
157 99
158 if (CurStreamType != LLVMIRBitstream) return nullptr; 100 BCDumpOptions O(outs());
101 O.Histogram = !NoHistogram;
102 O.Symbolic = !NonSymbolic;
103 O.ShowBinaryBlobs = ShowBinaryBlobs;
159 104
160 #define STRINGIFY_CODE(PREFIX, CODE) \ 105 ExitOnErr(
161 case bitc::PREFIX##_##CODE: \ 106 BA.analyze(O, CheckHash.empty() ? None : Optional<StringRef>(CheckHash)));
162 return #CODE;
163 switch (BlockID) {
164 default: return nullptr;
165 case bitc::MODULE_BLOCK_ID:
166 switch (CodeID) {
167 default: return nullptr;
168 STRINGIFY_CODE(MODULE_CODE, VERSION)
169 STRINGIFY_CODE(MODULE_CODE, TRIPLE)
170 STRINGIFY_CODE(MODULE_CODE, DATALAYOUT)
171 STRINGIFY_CODE(MODULE_CODE, ASM)
172 STRINGIFY_CODE(MODULE_CODE, SECTIONNAME)
173 STRINGIFY_CODE(MODULE_CODE, DEPLIB) // FIXME: Remove in 4.0
174 STRINGIFY_CODE(MODULE_CODE, GLOBALVAR)
175 STRINGIFY_CODE(MODULE_CODE, FUNCTION)
176 STRINGIFY_CODE(MODULE_CODE, ALIAS)
177 STRINGIFY_CODE(MODULE_CODE, GCNAME)
178 STRINGIFY_CODE(MODULE_CODE, VSTOFFSET)
179 STRINGIFY_CODE(MODULE_CODE, METADATA_VALUES_UNUSED)
180 STRINGIFY_CODE(MODULE_CODE, SOURCE_FILENAME)
181 STRINGIFY_CODE(MODULE_CODE, HASH)
182 }
183 case bitc::IDENTIFICATION_BLOCK_ID:
184 switch (CodeID) {
185 default:
186 return nullptr;
187 STRINGIFY_CODE(IDENTIFICATION_CODE, STRING)
188 STRINGIFY_CODE(IDENTIFICATION_CODE, EPOCH)
189 }
190 case bitc::PARAMATTR_BLOCK_ID:
191 switch (CodeID) {
192 default: return nullptr;
193 // FIXME: Should these be different?
194 case bitc::PARAMATTR_CODE_ENTRY_OLD: return "ENTRY";
195 case bitc::PARAMATTR_CODE_ENTRY: return "ENTRY";
196 }
197 case bitc::PARAMATTR_GROUP_BLOCK_ID:
198 switch (CodeID) {
199 default: return nullptr;
200 case bitc::PARAMATTR_GRP_CODE_ENTRY: return "ENTRY";
201 }
202 case bitc::TYPE_BLOCK_ID_NEW:
203 switch (CodeID) {
204 default: return nullptr;
205 STRINGIFY_CODE(TYPE_CODE, NUMENTRY)
206 STRINGIFY_CODE(TYPE_CODE, VOID)
207 STRINGIFY_CODE(TYPE_CODE, FLOAT)
208 STRINGIFY_CODE(TYPE_CODE, DOUBLE)
209 STRINGIFY_CODE(TYPE_CODE, LABEL)
210 STRINGIFY_CODE(TYPE_CODE, OPAQUE)
211 STRINGIFY_CODE(TYPE_CODE, INTEGER)
212 STRINGIFY_CODE(TYPE_CODE, POINTER)
213 STRINGIFY_CODE(TYPE_CODE, ARRAY)
214 STRINGIFY_CODE(TYPE_CODE, VECTOR)
215 STRINGIFY_CODE(TYPE_CODE, X86_FP80)
216 STRINGIFY_CODE(TYPE_CODE, FP128)
217 STRINGIFY_CODE(TYPE_CODE, PPC_FP128)
218 STRINGIFY_CODE(TYPE_CODE, METADATA)
219 STRINGIFY_CODE(TYPE_CODE, STRUCT_ANON)
220 STRINGIFY_CODE(TYPE_CODE, STRUCT_NAME)
221 STRINGIFY_CODE(TYPE_CODE, STRUCT_NAMED)
222 STRINGIFY_CODE(TYPE_CODE, FUNCTION)
223 }
224 107
225 case bitc::CONSTANTS_BLOCK_ID: 108 if (Dump)
226 switch (CodeID) { 109 outs() << "\n\n";
227 default: return nullptr;
228 STRINGIFY_CODE(CST_CODE, SETTYPE)
229 STRINGIFY_CODE(CST_CODE, NULL)
230 STRINGIFY_CODE(CST_CODE, UNDEF)
231 STRINGIFY_CODE(CST_CODE, INTEGER)
232 STRINGIFY_CODE(CST_CODE, WIDE_INTEGER)
233 STRINGIFY_CODE(CST_CODE, FLOAT)
234 STRINGIFY_CODE(CST_CODE, AGGREGATE)
235 STRINGIFY_CODE(CST_CODE, STRING)
236 STRINGIFY_CODE(CST_CODE, CSTRING)
237 STRINGIFY_CODE(CST_CODE, CE_BINOP)
238 STRINGIFY_CODE(CST_CODE, CE_CAST)
239 STRINGIFY_CODE(CST_CODE, CE_GEP)
240 STRINGIFY_CODE(CST_CODE, CE_INBOUNDS_GEP)
241 STRINGIFY_CODE(CST_CODE, CE_SELECT)
242 STRINGIFY_CODE(CST_CODE, CE_EXTRACTELT)
243 STRINGIFY_CODE(CST_CODE, CE_INSERTELT)
244 STRINGIFY_CODE(CST_CODE, CE_SHUFFLEVEC)
245 STRINGIFY_CODE(CST_CODE, CE_CMP)
246 STRINGIFY_CODE(CST_CODE, INLINEASM)
247 STRINGIFY_CODE(CST_CODE, CE_SHUFVEC_EX)
248 case bitc::CST_CODE_BLOCKADDRESS: return "CST_CODE_BLOCKADDRESS";
249 STRINGIFY_CODE(CST_CODE, DATA)
250 }
251 case bitc::FUNCTION_BLOCK_ID:
252 switch (CodeID) {
253 default: return nullptr;
254 STRINGIFY_CODE(FUNC_CODE, DECLAREBLOCKS)
255 STRINGIFY_CODE(FUNC_CODE, INST_BINOP)
256 STRINGIFY_CODE(FUNC_CODE, INST_CAST)
257 STRINGIFY_CODE(FUNC_CODE, INST_GEP_OLD)
258 STRINGIFY_CODE(FUNC_CODE, INST_INBOUNDS_GEP_OLD)
259 STRINGIFY_CODE(FUNC_CODE, INST_SELECT)
260 STRINGIFY_CODE(FUNC_CODE, INST_EXTRACTELT)
261 STRINGIFY_CODE(FUNC_CODE, INST_INSERTELT)
262 STRINGIFY_CODE(FUNC_CODE, INST_SHUFFLEVEC)
263 STRINGIFY_CODE(FUNC_CODE, INST_CMP)
264 STRINGIFY_CODE(FUNC_CODE, INST_RET)
265 STRINGIFY_CODE(FUNC_CODE, INST_BR)
266 STRINGIFY_CODE(FUNC_CODE, INST_SWITCH)
267 STRINGIFY_CODE(FUNC_CODE, INST_INVOKE)
268 STRINGIFY_CODE(FUNC_CODE, INST_UNREACHABLE)
269 STRINGIFY_CODE(FUNC_CODE, INST_CLEANUPRET)
270 STRINGIFY_CODE(FUNC_CODE, INST_CATCHRET)
271 STRINGIFY_CODE(FUNC_CODE, INST_CATCHPAD)
272 STRINGIFY_CODE(FUNC_CODE, INST_PHI)
273 STRINGIFY_CODE(FUNC_CODE, INST_ALLOCA)
274 STRINGIFY_CODE(FUNC_CODE, INST_LOAD)
275 STRINGIFY_CODE(FUNC_CODE, INST_VAARG)
276 STRINGIFY_CODE(FUNC_CODE, INST_STORE)
277 STRINGIFY_CODE(FUNC_CODE, INST_EXTRACTVAL)
278 STRINGIFY_CODE(FUNC_CODE, INST_INSERTVAL)
279 STRINGIFY_CODE(FUNC_CODE, INST_CMP2)
280 STRINGIFY_CODE(FUNC_CODE, INST_VSELECT)
281 STRINGIFY_CODE(FUNC_CODE, DEBUG_LOC_AGAIN)
282 STRINGIFY_CODE(FUNC_CODE, INST_CALL)
283 STRINGIFY_CODE(FUNC_CODE, DEBUG_LOC)
284 STRINGIFY_CODE(FUNC_CODE, INST_GEP)
285 STRINGIFY_CODE(FUNC_CODE, OPERAND_BUNDLE)
286 }
287 case bitc::VALUE_SYMTAB_BLOCK_ID:
288 switch (CodeID) {
289 default: return nullptr;
290 STRINGIFY_CODE(VST_CODE, ENTRY)
291 STRINGIFY_CODE(VST_CODE, BBENTRY)
292 STRINGIFY_CODE(VST_CODE, FNENTRY)
293 STRINGIFY_CODE(VST_CODE, COMBINED_ENTRY)
294 }
295 case bitc::MODULE_STRTAB_BLOCK_ID:
296 switch (CodeID) {
297 default:
298 return nullptr;
299 STRINGIFY_CODE(MST_CODE, ENTRY)
300 STRINGIFY_CODE(MST_CODE, HASH)
301 }
302 case bitc::GLOBALVAL_SUMMARY_BLOCK_ID:
303 case bitc::FULL_LTO_GLOBALVAL_SUMMARY_BLOCK_ID:
304 switch (CodeID) {
305 default:
306 return nullptr;
307 STRINGIFY_CODE(FS, PERMODULE)
308 STRINGIFY_CODE(FS, PERMODULE_PROFILE)
309 STRINGIFY_CODE(FS, PERMODULE_RELBF)
310 STRINGIFY_CODE(FS, PERMODULE_GLOBALVAR_INIT_REFS)
311 STRINGIFY_CODE(FS, COMBINED)
312 STRINGIFY_CODE(FS, COMBINED_PROFILE)
313 STRINGIFY_CODE(FS, COMBINED_GLOBALVAR_INIT_REFS)
314 STRINGIFY_CODE(FS, ALIAS)
315 STRINGIFY_CODE(FS, COMBINED_ALIAS)
316 STRINGIFY_CODE(FS, COMBINED_ORIGINAL_NAME)
317 STRINGIFY_CODE(FS, VERSION)
318 STRINGIFY_CODE(FS, FLAGS)
319 STRINGIFY_CODE(FS, TYPE_TESTS)
320 STRINGIFY_CODE(FS, TYPE_TEST_ASSUME_VCALLS)
321 STRINGIFY_CODE(FS, TYPE_CHECKED_LOAD_VCALLS)
322 STRINGIFY_CODE(FS, TYPE_TEST_ASSUME_CONST_VCALL)
323 STRINGIFY_CODE(FS, TYPE_CHECKED_LOAD_CONST_VCALL)
324 STRINGIFY_CODE(FS, VALUE_GUID)
325 STRINGIFY_CODE(FS, CFI_FUNCTION_DEFS)
326 STRINGIFY_CODE(FS, CFI_FUNCTION_DECLS)
327 STRINGIFY_CODE(FS, TYPE_ID)
328 }
329 case bitc::METADATA_ATTACHMENT_ID:
330 switch(CodeID) {
331 default:return nullptr;
332 STRINGIFY_CODE(METADATA, ATTACHMENT)
333 }
334 case bitc::METADATA_BLOCK_ID:
335 switch(CodeID) {
336 default:return nullptr;
337 STRINGIFY_CODE(METADATA, STRING_OLD)
338 STRINGIFY_CODE(METADATA, VALUE)
339 STRINGIFY_CODE(METADATA, NODE)
340 STRINGIFY_CODE(METADATA, NAME)
341 STRINGIFY_CODE(METADATA, DISTINCT_NODE)
342 STRINGIFY_CODE(METADATA, KIND) // Older bitcode has it in a MODULE_BLOCK
343 STRINGIFY_CODE(METADATA, LOCATION)
344 STRINGIFY_CODE(METADATA, OLD_NODE)
345 STRINGIFY_CODE(METADATA, OLD_FN_NODE)
346 STRINGIFY_CODE(METADATA, NAMED_NODE)
347 STRINGIFY_CODE(METADATA, GENERIC_DEBUG)
348 STRINGIFY_CODE(METADATA, SUBRANGE)
349 STRINGIFY_CODE(METADATA, ENUMERATOR)
350 STRINGIFY_CODE(METADATA, BASIC_TYPE)
351 STRINGIFY_CODE(METADATA, FILE)
352 STRINGIFY_CODE(METADATA, DERIVED_TYPE)
353 STRINGIFY_CODE(METADATA, COMPOSITE_TYPE)
354 STRINGIFY_CODE(METADATA, SUBROUTINE_TYPE)
355 STRINGIFY_CODE(METADATA, COMPILE_UNIT)
356 STRINGIFY_CODE(METADATA, SUBPROGRAM)
357 STRINGIFY_CODE(METADATA, LEXICAL_BLOCK)
358 STRINGIFY_CODE(METADATA, LEXICAL_BLOCK_FILE)
359 STRINGIFY_CODE(METADATA, NAMESPACE)
360 STRINGIFY_CODE(METADATA, TEMPLATE_TYPE)
361 STRINGIFY_CODE(METADATA, TEMPLATE_VALUE)
362 STRINGIFY_CODE(METADATA, GLOBAL_VAR)
363 STRINGIFY_CODE(METADATA, LOCAL_VAR)
364 STRINGIFY_CODE(METADATA, EXPRESSION)
365 STRINGIFY_CODE(METADATA, OBJC_PROPERTY)
366 STRINGIFY_CODE(METADATA, IMPORTED_ENTITY)
367 STRINGIFY_CODE(METADATA, MODULE)
368 STRINGIFY_CODE(METADATA, MACRO)
369 STRINGIFY_CODE(METADATA, MACRO_FILE)
370 STRINGIFY_CODE(METADATA, STRINGS)
371 STRINGIFY_CODE(METADATA, GLOBAL_DECL_ATTACHMENT)
372 STRINGIFY_CODE(METADATA, GLOBAL_VAR_EXPR)
373 STRINGIFY_CODE(METADATA, INDEX_OFFSET)
374 STRINGIFY_CODE(METADATA, INDEX)
375 }
376 case bitc::METADATA_KIND_BLOCK_ID:
377 switch (CodeID) {
378 default:
379 return nullptr;
380 STRINGIFY_CODE(METADATA, KIND)
381 }
382 case bitc::USELIST_BLOCK_ID:
383 switch(CodeID) {
384 default:return nullptr;
385 case bitc::USELIST_CODE_DEFAULT: return "USELIST_CODE_DEFAULT";
386 case bitc::USELIST_CODE_BB: return "USELIST_CODE_BB";
387 }
388 110
389 case bitc::OPERAND_BUNDLE_TAGS_BLOCK_ID: 111 BA.printStats(O, StringRef(InputFilename.getValue()));
390 switch(CodeID) {
391 default: return nullptr;
392 case bitc::OPERAND_BUNDLE_TAG: return "OPERAND_BUNDLE_TAG";
393 }
394 case bitc::STRTAB_BLOCK_ID:
395 switch(CodeID) {
396 default: return nullptr;
397 case bitc::STRTAB_BLOB: return "BLOB";
398 }
399 case bitc::SYMTAB_BLOCK_ID:
400 switch(CodeID) {
401 default: return nullptr;
402 case bitc::SYMTAB_BLOB: return "BLOB";
403 }
404 }
405 #undef STRINGIFY_CODE
406 }
407
408 struct PerRecordStats {
409 unsigned NumInstances;
410 unsigned NumAbbrev;
411 uint64_t TotalBits;
412
413 PerRecordStats() : NumInstances(0), NumAbbrev(0), TotalBits(0) {}
414 };
415
416 struct PerBlockIDStats {
417 /// NumInstances - This the number of times this block ID has been seen.
418 unsigned NumInstances;
419
420 /// NumBits - The total size in bits of all of these blocks.
421 uint64_t NumBits;
422
423 /// NumSubBlocks - The total number of blocks these blocks contain.
424 unsigned NumSubBlocks;
425
426 /// NumAbbrevs - The total number of abbreviations.
427 unsigned NumAbbrevs;
428
429 /// NumRecords - The total number of records these blocks contain, and the
430 /// number that are abbreviated.
431 unsigned NumRecords, NumAbbreviatedRecords;
432
433 /// CodeFreq - Keep track of the number of times we see each code.
434 std::vector<PerRecordStats> CodeFreq;
435
436 PerBlockIDStats()
437 : NumInstances(0), NumBits(0),
438 NumSubBlocks(0), NumAbbrevs(0), NumRecords(0), NumAbbreviatedRecords(0) {}
439 };
440
441 static std::map<unsigned, PerBlockIDStats> BlockIDStats;
442
443
444
445 /// ReportError - All bitcode analysis errors go through this function, making this a
446 /// good place to breakpoint if debugging.
447 static bool ReportError(const Twine &Err) {
448 errs() << Err << "\n";
449 return true;
450 }
451
452 static bool decodeMetadataStringsBlob(StringRef Indent,
453 ArrayRef<uint64_t> Record,
454 StringRef Blob) {
455 if (Blob.empty())
456 return true;
457
458 if (Record.size() != 2)
459 return true;
460
461 unsigned NumStrings = Record[0];
462 unsigned StringsOffset = Record[1];
463 outs() << " num-strings = " << NumStrings << " {\n";
464
465 StringRef Lengths = Blob.slice(0, StringsOffset);
466 SimpleBitstreamCursor R(Lengths);
467 StringRef Strings = Blob.drop_front(StringsOffset);
468 do {
469 if (R.AtEndOfStream())
470 return ReportError("bad length");
471
472 unsigned Size = R.ReadVBR(6);
473 if (Strings.size() < Size)
474 return ReportError("truncated chars");
475
476 outs() << Indent << " '";
477 outs().write_escaped(Strings.slice(0, Size), /*hex=*/true);
478 outs() << "'\n";
479 Strings = Strings.drop_front(Size);
480 } while (--NumStrings);
481
482 outs() << Indent << " }";
483 return false;
484 }
485
486 static bool decodeBlob(unsigned Code, unsigned BlockID, StringRef Indent,
487 ArrayRef<uint64_t> Record, StringRef Blob) {
488 if (BlockID != bitc::METADATA_BLOCK_ID)
489 return true;
490 if (Code != bitc::METADATA_STRINGS)
491 return true;
492
493 return decodeMetadataStringsBlob(Indent, Record, Blob);
494 }
495
496 /// ParseBlock - Read a block, updating statistics, etc.
497 static bool ParseBlock(BitstreamCursor &Stream, BitstreamBlockInfo &BlockInfo,
498 unsigned BlockID, unsigned IndentLevel,
499 CurStreamTypeType CurStreamType) {
500 std::string Indent(IndentLevel*2, ' ');
501 uint64_t BlockBitStart = Stream.GetCurrentBitNo();
502
503 // Get the statistics for this BlockID.
504 PerBlockIDStats &BlockStats = BlockIDStats[BlockID];
505
506 BlockStats.NumInstances++;
507
508 // BLOCKINFO is a special part of the stream.
509 bool DumpRecords = Dump;
510 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
511 if (Dump) outs() << Indent << "<BLOCKINFO_BLOCK/>\n";
512 Optional<BitstreamBlockInfo> NewBlockInfo =
513 Stream.ReadBlockInfoBlock(/*ReadBlockInfoNames=*/true);
514 if (!NewBlockInfo)
515 return ReportError("Malformed BlockInfoBlock");
516 BlockInfo = std::move(*NewBlockInfo);
517 Stream.JumpToBit(BlockBitStart);
518 // It's not really interesting to dump the contents of the blockinfo block.
519 DumpRecords = false;
520 }
521
522 unsigned NumWords = 0;
523 if (Stream.EnterSubBlock(BlockID, &NumWords))
524 return ReportError("Malformed block record");
525
526 // Keep it for later, when we see a MODULE_HASH record
527 uint64_t BlockEntryPos = Stream.getCurrentByteNo();
528
529 const char *BlockName = nullptr;
530 if (DumpRecords) {
531 outs() << Indent << "<";
532 if ((BlockName = GetBlockName(BlockID, BlockInfo, CurStreamType)))
533 outs() << BlockName;
534 else
535 outs() << "UnknownBlock" << BlockID;
536
537 if (NonSymbolic && BlockName)
538 outs() << " BlockID=" << BlockID;
539
540 outs() << " NumWords=" << NumWords
541 << " BlockCodeSize=" << Stream.getAbbrevIDWidth() << ">\n";
542 }
543
544 SmallVector<uint64_t, 64> Record;
545
546 // Keep the offset to the metadata index if seen.
547 uint64_t MetadataIndexOffset = 0;
548
549 // Read all the records for this block.
550 while (1) {
551 if (Stream.AtEndOfStream())
552 return ReportError("Premature end of bitstream");
553
554 uint64_t RecordStartBit = Stream.GetCurrentBitNo();
555
556 BitstreamEntry Entry =
557 Stream.advance(BitstreamCursor::AF_DontAutoprocessAbbrevs);
558
559 switch (Entry.Kind) {
560 case BitstreamEntry::Error:
561 return ReportError("malformed bitcode file");
562 case BitstreamEntry::EndBlock: {
563 uint64_t BlockBitEnd = Stream.GetCurrentBitNo();
564 BlockStats.NumBits += BlockBitEnd-BlockBitStart;
565 if (DumpRecords) {
566 outs() << Indent << "</";
567 if (BlockName)
568 outs() << BlockName << ">\n";
569 else
570 outs() << "UnknownBlock" << BlockID << ">\n";
571 }
572 return false;
573 }
574
575 case BitstreamEntry::SubBlock: {
576 uint64_t SubBlockBitStart = Stream.GetCurrentBitNo();
577 if (ParseBlock(Stream, BlockInfo, Entry.ID, IndentLevel + 1,
578 CurStreamType))
579 return true;
580 ++BlockStats.NumSubBlocks;
581 uint64_t SubBlockBitEnd = Stream.GetCurrentBitNo();
582
583 // Don't include subblock sizes in the size of this block.
584 BlockBitStart += SubBlockBitEnd-SubBlockBitStart;
585 continue;
586 }
587 case BitstreamEntry::Record:
588 // The interesting case.
589 break;
590 }
591
592 if (Entry.ID == bitc::DEFINE_ABBREV) {
593 Stream.ReadAbbrevRecord();
594 ++BlockStats.NumAbbrevs;
595 continue;
596 }
597
598 Record.clear();
599
600 ++BlockStats.NumRecords;
601
602 StringRef Blob;
603 unsigned CurrentRecordPos = Stream.GetCurrentBitNo();
604 unsigned Code = Stream.readRecord(Entry.ID, Record, &Blob);
605
606 // Increment the # occurrences of this code.
607 if (BlockStats.CodeFreq.size() <= Code)
608 BlockStats.CodeFreq.resize(Code+1);
609 BlockStats.CodeFreq[Code].NumInstances++;
610 BlockStats.CodeFreq[Code].TotalBits +=
611 Stream.GetCurrentBitNo()-RecordStartBit;
612 if (Entry.ID != bitc::UNABBREV_RECORD) {
613 BlockStats.CodeFreq[Code].NumAbbrev++;
614 ++BlockStats.NumAbbreviatedRecords;
615 }
616
617 if (DumpRecords) {
618 outs() << Indent << " <";
619 if (const char *CodeName =
620 GetCodeName(Code, BlockID, BlockInfo, CurStreamType))
621 outs() << CodeName;
622 else
623 outs() << "UnknownCode" << Code;
624 if (NonSymbolic && GetCodeName(Code, BlockID, BlockInfo, CurStreamType))
625 outs() << " codeid=" << Code;
626 const BitCodeAbbrev *Abbv = nullptr;
627 if (Entry.ID != bitc::UNABBREV_RECORD) {
628 Abbv = Stream.getAbbrev(Entry.ID);
629 outs() << " abbrevid=" << Entry.ID;
630 }
631
632 for (unsigned i = 0, e = Record.size(); i != e; ++i)
633 outs() << " op" << i << "=" << (int64_t)Record[i];
634
635 // If we found a metadata index, let's verify that we had an offset before
636 // and validate its forward reference offset was correct!
637 if (BlockID == bitc::METADATA_BLOCK_ID) {
638 if (Code == bitc::METADATA_INDEX_OFFSET) {
639 if (Record.size() != 2)
640 outs() << "(Invalid record)";
641 else {
642 auto Offset = Record[0] + (Record[1] << 32);
643 MetadataIndexOffset = Stream.GetCurrentBitNo() + Offset;
644 }
645 }
646 if (Code == bitc::METADATA_INDEX) {
647 outs() << " (offset ";
648 if (MetadataIndexOffset == RecordStartBit)
649 outs() << "match)";
650 else
651 outs() << "mismatch: " << MetadataIndexOffset << " vs "
652 << RecordStartBit << ")";
653 }
654 }
655
656 // If we found a module hash, let's verify that it matches!
657 if (BlockID == bitc::MODULE_BLOCK_ID && Code == bitc::MODULE_CODE_HASH &&
658 !CheckHash.empty()) {
659 if (Record.size() != 5)
660 outs() << " (invalid)";
661 else {
662 // Recompute the hash and compare it to the one in the bitcode
663 SHA1 Hasher;
664 StringRef Hash;
665 Hasher.update(CheckHash);
666 {
667 int BlockSize = (CurrentRecordPos / 8) - BlockEntryPos;
668 auto Ptr = Stream.getPointerToByte(BlockEntryPos, BlockSize);
669 Hasher.update(ArrayRef<uint8_t>(Ptr, BlockSize));
670 Hash = Hasher.result();
671 }
672 SmallString<20> RecordedHash;
673 RecordedHash.resize(20);
674 int Pos = 0;
675 for (auto &Val : Record) {
676 assert(!(Val >> 32) && "Unexpected high bits set");
677 RecordedHash[Pos++] = (Val >> 24) & 0xFF;
678 RecordedHash[Pos++] = (Val >> 16) & 0xFF;
679 RecordedHash[Pos++] = (Val >> 8) & 0xFF;
680 RecordedHash[Pos++] = (Val >> 0) & 0xFF;
681 }
682 if (Hash == RecordedHash)
683 outs() << " (match)";
684 else
685 outs() << " (!mismatch!)";
686 }
687 }
688
689 outs() << "/>";
690
691 if (Abbv) {
692 for (unsigned i = 1, e = Abbv->getNumOperandInfos(); i != e; ++i) {
693 const BitCodeAbbrevOp &Op = Abbv->getOperandInfo(i);
694 if (!Op.isEncoding() || Op.getEncoding() != BitCodeAbbrevOp::Array)
695 continue;
696 assert(i + 2 == e && "Array op not second to last");
697 std::string Str;
698 bool ArrayIsPrintable = true;
699 for (unsigned j = i - 1, je = Record.size(); j != je; ++j) {
700 if (!isprint(static_cast<unsigned char>(Record[j]))) {
701 ArrayIsPrintable = false;
702 break;
703 }
704 Str += (char)Record[j];
705 }
706 if (ArrayIsPrintable)
707 outs() << " record string = '" << Str << "'";
708 break;
709 }
710 }
711
712 if (Blob.data() && decodeBlob(Code, BlockID, Indent, Record, Blob)) {
713 outs() << " blob data = ";
714 if (ShowBinaryBlobs) {
715 outs() << "'";
716 outs().write_escaped(Blob, /*hex=*/true) << "'";
717 } else {
718 bool BlobIsPrintable = true;
719 for (unsigned i = 0, e = Blob.size(); i != e; ++i)
720 if (!isprint(static_cast<unsigned char>(Blob[i]))) {
721 BlobIsPrintable = false;
722 break;
723 }
724
725 if (BlobIsPrintable)
726 outs() << "'" << Blob << "'";
727 else
728 outs() << "unprintable, " << Blob.size() << " bytes.";
729 }
730 }
731
732 outs() << "\n";
733 }
734
735 // Make sure that we can skip the current record.
736 Stream.JumpToBit(CurrentRecordPos);
737 Stream.skipRecord(Entry.ID);
738 }
739 }
740
741 static void PrintSize(double Bits) {
742 outs() << format("%.2f/%.2fB/%luW", Bits, Bits/8,(unsigned long)(Bits/32));
743 }
744 static void PrintSize(uint64_t Bits) {
745 outs() << format("%lub/%.2fB/%luW", (unsigned long)Bits,
746 (double)Bits/8, (unsigned long)(Bits/32));
747 }
748
749 static bool openBitcodeFile(StringRef Path,
750 std::unique_ptr<MemoryBuffer> &MemBuf,
751 BitstreamCursor &Stream,
752 CurStreamTypeType &CurStreamType) {
753 // Read the input file.
754 ErrorOr<std::unique_ptr<MemoryBuffer>> MemBufOrErr =
755 MemoryBuffer::getFileOrSTDIN(Path);
756 if (std::error_code EC = MemBufOrErr.getError())
757 return ReportError(Twine("ReportError reading '") + Path + "': " + EC.message());
758 MemBuf = std::move(MemBufOrErr.get());
759
760 if (MemBuf->getBufferSize() & 3)
761 return ReportError("Bitcode stream should be a multiple of 4 bytes in length");
762
763 const unsigned char *BufPtr = (const unsigned char *)MemBuf->getBufferStart();
764 const unsigned char *EndBufPtr = BufPtr + MemBuf->getBufferSize();
765
766 // If we have a wrapper header, parse it and ignore the non-bc file contents.
767 // The magic number is 0x0B17C0DE stored in little endian.
768 if (isBitcodeWrapper(BufPtr, EndBufPtr)) {
769 if (MemBuf->getBufferSize() < BWH_HeaderSize)
770 return ReportError("Invalid bitcode wrapper header");
771
772 if (Dump) {
773 unsigned Magic = support::endian::read32le(&BufPtr[BWH_MagicField]);
774 unsigned Version = support::endian::read32le(&BufPtr[BWH_VersionField]);
775 unsigned Offset = support::endian::read32le(&BufPtr[BWH_OffsetField]);
776 unsigned Size = support::endian::read32le(&BufPtr[BWH_SizeField]);
777 unsigned CPUType = support::endian::read32le(&BufPtr[BWH_CPUTypeField]);
778
779 outs() << "<BITCODE_WRAPPER_HEADER"
780 << " Magic=" << format_hex(Magic, 10)
781 << " Version=" << format_hex(Version, 10)
782 << " Offset=" << format_hex(Offset, 10)
783 << " Size=" << format_hex(Size, 10)
784 << " CPUType=" << format_hex(CPUType, 10) << "/>\n";
785 }
786
787 if (SkipBitcodeWrapperHeader(BufPtr, EndBufPtr, true))
788 return ReportError("Invalid bitcode wrapper header");
789 }
790
791 Stream = BitstreamCursor(ArrayRef<uint8_t>(BufPtr, EndBufPtr));
792
793 // Read the stream signature.
794 char Signature[6];
795 Signature[0] = Stream.Read(8);
796 Signature[1] = Stream.Read(8);
797 Signature[2] = Stream.Read(4);
798 Signature[3] = Stream.Read(4);
799 Signature[4] = Stream.Read(4);
800 Signature[5] = Stream.Read(4);
801
802 // Autodetect the file contents, if it is one we know.
803 CurStreamType = UnknownBitstream;
804 if (Signature[0] == 'B' && Signature[1] == 'C' &&
805 Signature[2] == 0x0 && Signature[3] == 0xC &&
806 Signature[4] == 0xE && Signature[5] == 0xD)
807 CurStreamType = LLVMIRBitstream;
808
809 return false;
810 }
811
812 /// AnalyzeBitcode - Analyze the bitcode file specified by InputFilename.
813 static int AnalyzeBitcode() {
814 std::unique_ptr<MemoryBuffer> StreamBuffer;
815 BitstreamCursor Stream;
816 BitstreamBlockInfo BlockInfo;
817 CurStreamTypeType CurStreamType;
818 if (openBitcodeFile(InputFilename, StreamBuffer, Stream, CurStreamType))
819 return true;
820 Stream.setBlockInfo(&BlockInfo);
821
822 // Read block info from BlockInfoFilename, if specified.
823 // The block info must be a top-level block.
824 if (!BlockInfoFilename.empty()) {
825 std::unique_ptr<MemoryBuffer> BlockInfoBuffer;
826 BitstreamCursor BlockInfoCursor;
827 CurStreamTypeType BlockInfoStreamType;
828 if (openBitcodeFile(BlockInfoFilename, BlockInfoBuffer, BlockInfoCursor,
829 BlockInfoStreamType))
830 return true;
831
832 while (!BlockInfoCursor.AtEndOfStream()) {
833 unsigned Code = BlockInfoCursor.ReadCode();
834 if (Code != bitc::ENTER_SUBBLOCK)
835 return ReportError("Invalid record at top-level in block info file");
836
837 unsigned BlockID = BlockInfoCursor.ReadSubBlockID();
838 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
839 Optional<BitstreamBlockInfo> NewBlockInfo =
840 BlockInfoCursor.ReadBlockInfoBlock(/*ReadBlockInfoNames=*/true);
841 if (!NewBlockInfo)
842 return ReportError("Malformed BlockInfoBlock in block info file");
843 BlockInfo = std::move(*NewBlockInfo);
844 break;
845 }
846
847 BlockInfoCursor.SkipBlock();
848 }
849 }
850
851 unsigned NumTopBlocks = 0;
852
853 // Parse the top-level structure. We only allow blocks at the top-level.
854 while (!Stream.AtEndOfStream()) {
855 unsigned Code = Stream.ReadCode();
856 if (Code != bitc::ENTER_SUBBLOCK)
857 return ReportError("Invalid record at top-level");
858
859 unsigned BlockID = Stream.ReadSubBlockID();
860
861 if (ParseBlock(Stream, BlockInfo, BlockID, 0, CurStreamType))
862 return true;
863 ++NumTopBlocks;
864 }
865
866 if (Dump) outs() << "\n\n";
867
868 uint64_t BufferSizeBits = Stream.getBitcodeBytes().size() * CHAR_BIT;
869 // Print a summary of the read file.
870 outs() << "Summary of " << InputFilename << ":\n";
871 outs() << " Total size: ";
872 PrintSize(BufferSizeBits);
873 outs() << "\n";
874 outs() << " Stream type: ";
875 switch (CurStreamType) {
876 case UnknownBitstream: outs() << "unknown\n"; break;
877 case LLVMIRBitstream: outs() << "LLVM IR\n"; break;
878 }
879 outs() << " # Toplevel Blocks: " << NumTopBlocks << "\n";
880 outs() << "\n";
881
882 // Emit per-block stats.
883 outs() << "Per-block Summary:\n";
884 for (std::map<unsigned, PerBlockIDStats>::iterator I = BlockIDStats.begin(),
885 E = BlockIDStats.end(); I != E; ++I) {
886 outs() << " Block ID #" << I->first;
887 if (const char *BlockName =
888 GetBlockName(I->first, BlockInfo, CurStreamType))
889 outs() << " (" << BlockName << ")";
890 outs() << ":\n";
891
892 const PerBlockIDStats &Stats = I->second;
893 outs() << " Num Instances: " << Stats.NumInstances << "\n";
894 outs() << " Total Size: ";
895 PrintSize(Stats.NumBits);
896 outs() << "\n";
897 double pct = (Stats.NumBits * 100.0) / BufferSizeBits;
898 outs() << " Percent of file: " << format("%2.4f%%", pct) << "\n";
899 if (Stats.NumInstances > 1) {
900 outs() << " Average Size: ";
901 PrintSize(Stats.NumBits/(double)Stats.NumInstances);
902 outs() << "\n";
903 outs() << " Tot/Avg SubBlocks: " << Stats.NumSubBlocks << "/"
904 << Stats.NumSubBlocks/(double)Stats.NumInstances << "\n";
905 outs() << " Tot/Avg Abbrevs: " << Stats.NumAbbrevs << "/"
906 << Stats.NumAbbrevs/(double)Stats.NumInstances << "\n";
907 outs() << " Tot/Avg Records: " << Stats.NumRecords << "/"
908 << Stats.NumRecords/(double)Stats.NumInstances << "\n";
909 } else {
910 outs() << " Num SubBlocks: " << Stats.NumSubBlocks << "\n";
911 outs() << " Num Abbrevs: " << Stats.NumAbbrevs << "\n";
912 outs() << " Num Records: " << Stats.NumRecords << "\n";
913 }
914 if (Stats.NumRecords) {
915 double pct = (Stats.NumAbbreviatedRecords * 100.0) / Stats.NumRecords;
916 outs() << " Percent Abbrevs: " << format("%2.4f%%", pct) << "\n";
917 }
918 outs() << "\n";
919
920 // Print a histogram of the codes we see.
921 if (!NoHistogram && !Stats.CodeFreq.empty()) {
922 std::vector<std::pair<unsigned, unsigned> > FreqPairs; // <freq,code>
923 for (unsigned i = 0, e = Stats.CodeFreq.size(); i != e; ++i)
924 if (unsigned Freq = Stats.CodeFreq[i].NumInstances)
925 FreqPairs.push_back(std::make_pair(Freq, i));
926 std::stable_sort(FreqPairs.begin(), FreqPairs.end());
927 std::reverse(FreqPairs.begin(), FreqPairs.end());
928
929 outs() << "\tRecord Histogram:\n";
930 outs() << "\t\t Count # Bits b/Rec % Abv Record Kind\n";
931 for (unsigned i = 0, e = FreqPairs.size(); i != e; ++i) {
932 const PerRecordStats &RecStats = Stats.CodeFreq[FreqPairs[i].second];
933
934 outs() << format("\t\t%7d %9lu",
935 RecStats.NumInstances,
936 (unsigned long)RecStats.TotalBits);
937
938 if (RecStats.NumInstances > 1)
939 outs() << format(" %9.1f",
940 (double)RecStats.TotalBits/RecStats.NumInstances);
941 else
942 outs() << " ";
943
944 if (RecStats.NumAbbrev)
945 outs() <<
946 format(" %7.2f",
947 (double)RecStats.NumAbbrev/RecStats.NumInstances*100);
948 else
949 outs() << " ";
950
951 outs() << " ";
952 if (const char *CodeName = GetCodeName(FreqPairs[i].second, I->first,
953 BlockInfo, CurStreamType))
954 outs() << CodeName << "\n";
955 else
956 outs() << "UnknownCode" << FreqPairs[i].second << "\n";
957 }
958 outs() << "\n";
959
960 }
961 }
962 return 0; 112 return 0;
963 } 113 }
964
965
966 int main(int argc, char **argv) {
967 // Print a stack trace if we signal out.
968 sys::PrintStackTraceOnErrorSignal(argv[0]);
969 PrettyStackTraceProgram X(argc, argv);
970 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
971 cl::ParseCommandLineOptions(argc, argv, "llvm-bcanalyzer file analyzer\n");
972
973 return AnalyzeBitcode();
974 }