?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Fixed some bugs.
[llvm/zpu.git] / tools / llvm-bcanalyzer / llvm-bcanalyzer.cpp
blob9c0d675793d346899bbe020f3595fbf92e94d817
1 //===-- llvm-bcanalyzer.cpp - Bitcode Analyzer --------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This tool may be invoked in the following manner:
11 // llvm-bcanalyzer [options] - Read LLVM bitcode from stdin
12 // llvm-bcanalyzer [options] x.bc - Read LLVM bitcode from the x.bc file
13 //
14 // Options:
15 // --help - Output information about command line switches
16 // --dump - Dump low-level bitcode structure in readable format
17 //
18 // This tool provides analytical information about a bitcode file. It is
19 // intended as an aid to developers of bitcode reading and writing software. It
20 // produces on std::out a summary of the bitcode file that shows various
21 // statistics about the contents of the file. By default this information is
22 // detailed and contains information about individual bitcode blocks and the
23 // functions in the module.
24 // The tool is also able to print a bitcode file in a straight forward text
25 // format that shows the containment and relationships of the information in
26 // the bitcode file (-dump option).
27 //
28 //===----------------------------------------------------------------------===//
29
30 #include "llvm/Analysis/Verifier.h"
31 #include "llvm/Bitcode/BitstreamReader.h"
32 #include "llvm/Bitcode/LLVMBitCodes.h"
33 #include "llvm/Bitcode/ReaderWriter.h"
34 #include "llvm/Support/CommandLine.h"
35 #include "llvm/Support/Format.h"
36 #include "llvm/Support/ManagedStatic.h"
37 #include "llvm/Support/MemoryBuffer.h"
38 #include "llvm/Support/PrettyStackTrace.h"
39 #include "llvm/Support/raw_ostream.h"
40 #include "llvm/System/Signals.h"
41 #include <cstdio>
42 #include <map>
43 #include <algorithm>
44 using namespace llvm;
45
46 static cl::opt<std::string>
47 InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
48
49 static cl::opt<bool> Dump("dump", cl::desc("Dump low level bitcode trace"));
50
51 //===----------------------------------------------------------------------===//
52 // Bitcode specific analysis.
53 //===----------------------------------------------------------------------===//
54
55 static cl::opt<bool> NoHistogram("disable-histogram",
56 cl::desc("Do not print per-code histogram"));
57
58 static cl::opt<bool>
59 NonSymbolic("non-symbolic",
60 cl::desc("Emit numberic info in dump even if"
61 " symbolic info is available"));
62
63 /// CurStreamType - If we can sniff the flavor of this stream, we can produce
64 /// better dump info.
65 static enum {
66 UnknownBitstream,
67 LLVMIRBitstream
68 } CurStreamType;
69
70
71 /// GetBlockName - Return a symbolic block name if known, otherwise return
72 /// null.
73 static const char *GetBlockName(unsigned BlockID,
74 const BitstreamReader &StreamFile) {
75 // Standard blocks for all bitcode files.
76 if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
77 if (BlockID == bitc::BLOCKINFO_BLOCK_ID)
78 return "BLOCKINFO_BLOCK";
79 return 0;
80 }
81
82 // Check to see if we have a blockinfo record for this block, with a name.
83 if (const BitstreamReader::BlockInfo *Info =
84 StreamFile.getBlockInfo(BlockID)) {
85 if (!Info->Name.empty())
86 return Info->Name.c_str();
87 }
88
89
90 if (CurStreamType != LLVMIRBitstream) return 0;
91
92 switch (BlockID) {
93 default: return 0;
94 case bitc::MODULE_BLOCK_ID: return "MODULE_BLOCK";
95 case bitc::PARAMATTR_BLOCK_ID: return "PARAMATTR_BLOCK";
96 case bitc::TYPE_BLOCK_ID: return "TYPE_BLOCK";
97 case bitc::CONSTANTS_BLOCK_ID: return "CONSTANTS_BLOCK";
98 case bitc::FUNCTION_BLOCK_ID: return "FUNCTION_BLOCK";
99 case bitc::TYPE_SYMTAB_BLOCK_ID: return "TYPE_SYMTAB";
100 case bitc::VALUE_SYMTAB_BLOCK_ID: return "VALUE_SYMTAB";
101 case bitc::METADATA_BLOCK_ID: return "METADATA_BLOCK";
102 case bitc::METADATA_ATTACHMENT_ID: return "METADATA_ATTACHMENT_BLOCK";
103 }
104 }
105
106 /// GetCodeName - Return a symbolic code name if known, otherwise return
107 /// null.
108 static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
109 const BitstreamReader &StreamFile) {
110 // Standard blocks for all bitcode files.
111 if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
112 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
113 switch (CodeID) {
114 default: return 0;
115 case bitc::BLOCKINFO_CODE_SETBID: return "SETBID";
116 case bitc::BLOCKINFO_CODE_BLOCKNAME: return "BLOCKNAME";
117 case bitc::BLOCKINFO_CODE_SETRECORDNAME: return "SETRECORDNAME";
118 }
119 }
120 return 0;
121 }
122
123 // Check to see if we have a blockinfo record for this record, with a name.
124 if (const BitstreamReader::BlockInfo *Info =
125 StreamFile.getBlockInfo(BlockID)) {
126 for (unsigned i = 0, e = Info->RecordNames.size(); i != e; ++i)
127 if (Info->RecordNames[i].first == CodeID)
128 return Info->RecordNames[i].second.c_str();
129 }
130
131
132 if (CurStreamType != LLVMIRBitstream) return 0;
133
134 switch (BlockID) {
135 default: return 0;
136 case bitc::MODULE_BLOCK_ID:
137 switch (CodeID) {
138 default: return 0;
139 case bitc::MODULE_CODE_VERSION: return "VERSION";
140 case bitc::MODULE_CODE_TRIPLE: return "TRIPLE";
141 case bitc::MODULE_CODE_DATALAYOUT: return "DATALAYOUT";
142 case bitc::MODULE_CODE_ASM: return "ASM";
143 case bitc::MODULE_CODE_SECTIONNAME: return "SECTIONNAME";
144 case bitc::MODULE_CODE_DEPLIB: return "DEPLIB";
145 case bitc::MODULE_CODE_GLOBALVAR: return "GLOBALVAR";
146 case bitc::MODULE_CODE_FUNCTION: return "FUNCTION";
147 case bitc::MODULE_CODE_ALIAS: return "ALIAS";
148 case bitc::MODULE_CODE_PURGEVALS: return "PURGEVALS";
149 case bitc::MODULE_CODE_GCNAME: return "GCNAME";
150 }
151 case bitc::PARAMATTR_BLOCK_ID:
152 switch (CodeID) {
153 default: return 0;
154 case bitc::PARAMATTR_CODE_ENTRY: return "ENTRY";
155 }
156 case bitc::TYPE_BLOCK_ID:
157 switch (CodeID) {
158 default: return 0;
159 case bitc::TYPE_CODE_NUMENTRY: return "NUMENTRY";
160 case bitc::TYPE_CODE_VOID: return "VOID";
161 case bitc::TYPE_CODE_FLOAT: return "FLOAT";
162 case bitc::TYPE_CODE_DOUBLE: return "DOUBLE";
163 case bitc::TYPE_CODE_LABEL: return "LABEL";
164 case bitc::TYPE_CODE_OPAQUE: return "OPAQUE";
165 case bitc::TYPE_CODE_INTEGER: return "INTEGER";
166 case bitc::TYPE_CODE_POINTER: return "POINTER";
167 case bitc::TYPE_CODE_FUNCTION: return "FUNCTION";
168 case bitc::TYPE_CODE_STRUCT: return "STRUCT";
169 case bitc::TYPE_CODE_ARRAY: return "ARRAY";
170 case bitc::TYPE_CODE_VECTOR: return "VECTOR";
171 case bitc::TYPE_CODE_X86_FP80: return "X86_FP80";
172 case bitc::TYPE_CODE_FP128: return "FP128";
173 case bitc::TYPE_CODE_PPC_FP128: return "PPC_FP128";
174 case bitc::TYPE_CODE_METADATA: return "METADATA";
175 }
176
177 case bitc::CONSTANTS_BLOCK_ID:
178 switch (CodeID) {
179 default: return 0;
180 case bitc::CST_CODE_SETTYPE: return "SETTYPE";
181 case bitc::CST_CODE_NULL: return "NULL";
182 case bitc::CST_CODE_UNDEF: return "UNDEF";
183 case bitc::CST_CODE_INTEGER: return "INTEGER";
184 case bitc::CST_CODE_WIDE_INTEGER: return "WIDE_INTEGER";
185 case bitc::CST_CODE_FLOAT: return "FLOAT";
186 case bitc::CST_CODE_AGGREGATE: return "AGGREGATE";
187 case bitc::CST_CODE_STRING: return "STRING";
188 case bitc::CST_CODE_CSTRING: return "CSTRING";
189 case bitc::CST_CODE_CE_BINOP: return "CE_BINOP";
190 case bitc::CST_CODE_CE_CAST: return "CE_CAST";
191 case bitc::CST_CODE_CE_GEP: return "CE_GEP";
192 case bitc::CST_CODE_CE_INBOUNDS_GEP: return "CE_INBOUNDS_GEP";
193 case bitc::CST_CODE_CE_SELECT: return "CE_SELECT";
194 case bitc::CST_CODE_CE_EXTRACTELT: return "CE_EXTRACTELT";
195 case bitc::CST_CODE_CE_INSERTELT: return "CE_INSERTELT";
196 case bitc::CST_CODE_CE_SHUFFLEVEC: return "CE_SHUFFLEVEC";
197 case bitc::CST_CODE_CE_CMP: return "CE_CMP";
198 case bitc::CST_CODE_INLINEASM: return "INLINEASM";
199 case bitc::CST_CODE_CE_SHUFVEC_EX: return "CE_SHUFVEC_EX";
200 }
201 case bitc::FUNCTION_BLOCK_ID:
202 switch (CodeID) {
203 default: return 0;
204 case bitc::FUNC_CODE_DECLAREBLOCKS: return "DECLAREBLOCKS";
205
206 case bitc::FUNC_CODE_INST_BINOP: return "INST_BINOP";
207 case bitc::FUNC_CODE_INST_CAST: return "INST_CAST";
208 case bitc::FUNC_CODE_INST_GEP: return "INST_GEP";
209 case bitc::FUNC_CODE_INST_INBOUNDS_GEP: return "INST_INBOUNDS_GEP";
210 case bitc::FUNC_CODE_INST_SELECT: return "INST_SELECT";
211 case bitc::FUNC_CODE_INST_EXTRACTELT: return "INST_EXTRACTELT";
212 case bitc::FUNC_CODE_INST_INSERTELT: return "INST_INSERTELT";
213 case bitc::FUNC_CODE_INST_SHUFFLEVEC: return "INST_SHUFFLEVEC";
214 case bitc::FUNC_CODE_INST_CMP: return "INST_CMP";
215
216 case bitc::FUNC_CODE_INST_RET: return "INST_RET";
217 case bitc::FUNC_CODE_INST_BR: return "INST_BR";
218 case bitc::FUNC_CODE_INST_SWITCH: return "INST_SWITCH";
219 case bitc::FUNC_CODE_INST_INVOKE: return "INST_INVOKE";
220 case bitc::FUNC_CODE_INST_UNWIND: return "INST_UNWIND";
221 case bitc::FUNC_CODE_INST_UNREACHABLE: return "INST_UNREACHABLE";
222
223 case bitc::FUNC_CODE_INST_PHI: return "INST_PHI";
224 case bitc::FUNC_CODE_INST_MALLOC: return "INST_MALLOC";
225 case bitc::FUNC_CODE_INST_FREE: return "INST_FREE";
226 case bitc::FUNC_CODE_INST_ALLOCA: return "INST_ALLOCA";
227 case bitc::FUNC_CODE_INST_LOAD: return "INST_LOAD";
228 case bitc::FUNC_CODE_INST_STORE: return "INST_STORE";
229 case bitc::FUNC_CODE_INST_CALL: return "INST_CALL";
230 case bitc::FUNC_CODE_INST_VAARG: return "INST_VAARG";
231 case bitc::FUNC_CODE_INST_STORE2: return "INST_STORE2";
232 case bitc::FUNC_CODE_INST_GETRESULT: return "INST_GETRESULT";
233 case bitc::FUNC_CODE_INST_EXTRACTVAL: return "INST_EXTRACTVAL";
234 case bitc::FUNC_CODE_INST_INSERTVAL: return "INST_INSERTVAL";
235 case bitc::FUNC_CODE_INST_CMP2: return "INST_CMP2";
236 case bitc::FUNC_CODE_INST_VSELECT: return "INST_VSELECT";
237 case bitc::FUNC_CODE_DEBUG_LOC: return "DEBUG_LOC";
238 case bitc::FUNC_CODE_DEBUG_LOC_AGAIN: return "DEBUG_LOC_AGAIN";
239 case bitc::FUNC_CODE_INST_CALL2: return "INST_CALL2";
240 case bitc::FUNC_CODE_DEBUG_LOC2: return "DEBUG_LOC2";
241 }
242 case bitc::TYPE_SYMTAB_BLOCK_ID:
243 switch (CodeID) {
244 default: return 0;
245 case bitc::TST_CODE_ENTRY: return "ENTRY";
246 }
247 case bitc::VALUE_SYMTAB_BLOCK_ID:
248 switch (CodeID) {
249 default: return 0;
250 case bitc::VST_CODE_ENTRY: return "ENTRY";
251 case bitc::VST_CODE_BBENTRY: return "BBENTRY";
252 }
253 case bitc::METADATA_ATTACHMENT_ID:
254 switch(CodeID) {
255 default:return 0;
256 case bitc::METADATA_ATTACHMENT: return "METADATA_ATTACHMENT";
257 }
258 case bitc::METADATA_BLOCK_ID:
259 switch(CodeID) {
260 default:return 0;
261 case bitc::METADATA_STRING: return "METADATA_STRING";
262 case bitc::METADATA_NODE: return "METADATA_NODE";
263 case bitc::METADATA_FN_NODE: return "METADATA_FN_NODE";
264 case bitc::METADATA_NAME: return "METADATA_NAME";
265 case bitc::METADATA_NAMED_NODE: return "METADATA_NAMED_NODE";
266 case bitc::METADATA_KIND: return "METADATA_KIND";
267 case bitc::METADATA_ATTACHMENT: return "METADATA_ATTACHMENT";
268 case bitc::METADATA_NODE2: return "METADATA_NODE2";
269 case bitc::METADATA_FN_NODE2: return "METADATA_FN_NODE2";
270 case bitc::METADATA_NAMED_NODE2: return "METADATA_NAMED_NODE2";
271 case bitc::METADATA_ATTACHMENT2: return "METADATA_ATTACHMENT2";
272 }
273 }
274 }
275
276 struct PerRecordStats {
277 unsigned NumInstances;
278 unsigned NumAbbrev;
279 uint64_t TotalBits;
280
281 PerRecordStats() : NumInstances(0), NumAbbrev(0), TotalBits(0) {}
282 };
283
284 struct PerBlockIDStats {
285 /// NumInstances - This the number of times this block ID has been seen.
286 unsigned NumInstances;
287
288 /// NumBits - The total size in bits of all of these blocks.
289 uint64_t NumBits;
290
291 /// NumSubBlocks - The total number of blocks these blocks contain.
292 unsigned NumSubBlocks;
293
294 /// NumAbbrevs - The total number of abbreviations.
295 unsigned NumAbbrevs;
296
297 /// NumRecords - The total number of records these blocks contain, and the
298 /// number that are abbreviated.
299 unsigned NumRecords, NumAbbreviatedRecords;
300
301 /// CodeFreq - Keep track of the number of times we see each code.
302 std::vector<PerRecordStats> CodeFreq;
303
304 PerBlockIDStats()
305 : NumInstances(0), NumBits(0),
306 NumSubBlocks(0), NumAbbrevs(0), NumRecords(0), NumAbbreviatedRecords(0) {}
307 };
308
309 static std::map<unsigned, PerBlockIDStats> BlockIDStats;
310
311
312
313 /// Error - All bitcode analysis errors go through this function, making this a
314 /// good place to breakpoint if debugging.
315 static bool Error(const std::string &Err) {
316 errs() << Err << "\n";
317 return true;
318 }
319
320 /// ParseBlock - Read a block, updating statistics, etc.
321 static bool ParseBlock(BitstreamCursor &Stream, unsigned IndentLevel) {
322 std::string Indent(IndentLevel*2, ' ');
323 uint64_t BlockBitStart = Stream.GetCurrentBitNo();
324 unsigned BlockID = Stream.ReadSubBlockID();
325
326 // Get the statistics for this BlockID.
327 PerBlockIDStats &BlockStats = BlockIDStats[BlockID];
328
329 BlockStats.NumInstances++;
330
331 // BLOCKINFO is a special part of the stream.
332 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
333 if (Dump) errs() << Indent << "<BLOCKINFO_BLOCK/>\n";
334 if (Stream.ReadBlockInfoBlock())
335 return Error("Malformed BlockInfoBlock");
336 uint64_t BlockBitEnd = Stream.GetCurrentBitNo();
337 BlockStats.NumBits += BlockBitEnd-BlockBitStart;
338 return false;
339 }
340
341 unsigned NumWords = 0;
342 if (Stream.EnterSubBlock(BlockID, &NumWords))
343 return Error("Malformed block record");
344
345 const char *BlockName = 0;
346 if (Dump) {
347 errs() << Indent << "<";
348 if ((BlockName = GetBlockName(BlockID, *Stream.getBitStreamReader())))
349 errs() << BlockName;
350 else
351 errs() << "UnknownBlock" << BlockID;
352
353 if (NonSymbolic && BlockName)
354 errs() << " BlockID=" << BlockID;
355
356 errs() << " NumWords=" << NumWords
357 << " BlockCodeSize=" << Stream.GetAbbrevIDWidth() << ">\n";
358 }
359
360 SmallVector<uint64_t, 64> Record;
361
362 // Read all the records for this block.
363 while (1) {
364 if (Stream.AtEndOfStream())
365 return Error("Premature end of bitstream");
366
367 uint64_t RecordStartBit = Stream.GetCurrentBitNo();
368
369 // Read the code for this record.
370 unsigned AbbrevID = Stream.ReadCode();
371 switch (AbbrevID) {
372 case bitc::END_BLOCK: {
373 if (Stream.ReadBlockEnd())
374 return Error("Error at end of block");
375 uint64_t BlockBitEnd = Stream.GetCurrentBitNo();
376 BlockStats.NumBits += BlockBitEnd-BlockBitStart;
377 if (Dump) {
378 errs() << Indent << "</";
379 if (BlockName)
380 errs() << BlockName << ">\n";
381 else
382 errs() << "UnknownBlock" << BlockID << ">\n";
383 }
384 return false;
385 }
386 case bitc::ENTER_SUBBLOCK: {
387 uint64_t SubBlockBitStart = Stream.GetCurrentBitNo();
388 if (ParseBlock(Stream, IndentLevel+1))
389 return true;
390 ++BlockStats.NumSubBlocks;
391 uint64_t SubBlockBitEnd = Stream.GetCurrentBitNo();
392
393 // Don't include subblock sizes in the size of this block.
394 BlockBitStart += SubBlockBitEnd-SubBlockBitStart;
395 break;
396 }
397 case bitc::DEFINE_ABBREV:
398 Stream.ReadAbbrevRecord();
399 ++BlockStats.NumAbbrevs;
400 break;
401 default:
402 Record.clear();
403
404 ++BlockStats.NumRecords;
405 if (AbbrevID != bitc::UNABBREV_RECORD)
406 ++BlockStats.NumAbbreviatedRecords;
407
408 const char *BlobStart = 0;
409 unsigned BlobLen = 0;
410 unsigned Code = Stream.ReadRecord(AbbrevID, Record, BlobStart, BlobLen);
411
412
413
414 // Increment the # occurrences of this code.
415 if (BlockStats.CodeFreq.size() <= Code)
416 BlockStats.CodeFreq.resize(Code+1);
417 BlockStats.CodeFreq[Code].NumInstances++;
418 BlockStats.CodeFreq[Code].TotalBits +=
419 Stream.GetCurrentBitNo()-RecordStartBit;
420 if (AbbrevID != bitc::UNABBREV_RECORD)
421 BlockStats.CodeFreq[Code].NumAbbrev++;
422
423 if (Dump) {
424 errs() << Indent << " <";
425 if (const char *CodeName =
426 GetCodeName(Code, BlockID, *Stream.getBitStreamReader()))
427 errs() << CodeName;
428 else
429 errs() << "UnknownCode" << Code;
430 if (NonSymbolic &&
431 GetCodeName(Code, BlockID, *Stream.getBitStreamReader()))
432 errs() << " codeid=" << Code;
433 if (AbbrevID != bitc::UNABBREV_RECORD)
434 errs() << " abbrevid=" << AbbrevID;
435
436 for (unsigned i = 0, e = Record.size(); i != e; ++i)
437 errs() << " op" << i << "=" << (int64_t)Record[i];
438
439 errs() << "/>";
440
441 if (BlobStart) {
442 errs() << " blob data = ";
443 bool BlobIsPrintable = true;
444 for (unsigned i = 0; i != BlobLen; ++i)
445 if (!isprint(BlobStart[i])) {
446 BlobIsPrintable = false;
447 break;
448 }
449
450 if (BlobIsPrintable)
451 errs() << "'" << std::string(BlobStart, BlobStart+BlobLen) <<"'";
452 else
453 errs() << "unprintable, " << BlobLen << " bytes.";
454 }
455
456 errs() << "\n";
457 }
458
459 break;
460 }
461 }
462 }
463
464 static void PrintSize(double Bits) {
465 fprintf(stderr, "%.2f/%.2fB/%lluW", Bits, Bits/8,(unsigned long long)Bits/32);
466 }
467 static void PrintSize(uint64_t Bits) {
468 fprintf(stderr, "%llub/%.2fB/%lluW", (unsigned long long)Bits,
469 (double)Bits/8, (unsigned long long)Bits/32);
470 }
471
472
473 /// AnalyzeBitcode - Analyze the bitcode file specified by InputFilename.
474 static int AnalyzeBitcode() {
475 // Read the input file.
476 MemoryBuffer *MemBuf = MemoryBuffer::getFileOrSTDIN(InputFilename.c_str());
477
478 if (MemBuf == 0)
479 return Error("Error reading '" + InputFilename + "'.");
480
481 if (MemBuf->getBufferSize() & 3)
482 return Error("Bitcode stream should be a multiple of 4 bytes in length");
483
484 unsigned char *BufPtr = (unsigned char *)MemBuf->getBufferStart();
485 unsigned char *EndBufPtr = BufPtr+MemBuf->getBufferSize();
486
487 // If we have a wrapper header, parse it and ignore the non-bc file contents.
488 // The magic number is 0x0B17C0DE stored in little endian.
489 if (isBitcodeWrapper(BufPtr, EndBufPtr))
490 if (SkipBitcodeWrapperHeader(BufPtr, EndBufPtr))
491 return Error("Invalid bitcode wrapper header");
492
493 BitstreamReader StreamFile(BufPtr, EndBufPtr);
494 BitstreamCursor Stream(StreamFile);
495 StreamFile.CollectBlockInfoNames();
496
497 // Read the stream signature.
498 char Signature[6];
499 Signature[0] = Stream.Read(8);
500 Signature[1] = Stream.Read(8);
501 Signature[2] = Stream.Read(4);
502 Signature[3] = Stream.Read(4);
503 Signature[4] = Stream.Read(4);
504 Signature[5] = Stream.Read(4);
505
506 // Autodetect the file contents, if it is one we know.
507 CurStreamType = UnknownBitstream;
508 if (Signature[0] == 'B' && Signature[1] == 'C' &&
509 Signature[2] == 0x0 && Signature[3] == 0xC &&
510 Signature[4] == 0xE && Signature[5] == 0xD)
511 CurStreamType = LLVMIRBitstream;
512
513 unsigned NumTopBlocks = 0;
514
515 // Parse the top-level structure. We only allow blocks at the top-level.
516 while (!Stream.AtEndOfStream()) {
517 unsigned Code = Stream.ReadCode();
518 if (Code != bitc::ENTER_SUBBLOCK)
519 return Error("Invalid record at top-level");
520
521 if (ParseBlock(Stream, 0))
522 return true;
523 ++NumTopBlocks;
524 }
525
526 if (Dump) errs() << "\n\n";
527
528 uint64_t BufferSizeBits = (EndBufPtr-BufPtr)*CHAR_BIT;
529 // Print a summary of the read file.
530 errs() << "Summary of " << InputFilename << ":\n";
531 errs() << " Total size: ";
532 PrintSize(BufferSizeBits);
533 errs() << "\n";
534 errs() << " Stream type: ";
535 switch (CurStreamType) {
536 default: assert(0 && "Unknown bitstream type");
537 case UnknownBitstream: errs() << "unknown\n"; break;
538 case LLVMIRBitstream: errs() << "LLVM IR\n"; break;
539 }
540 errs() << " # Toplevel Blocks: " << NumTopBlocks << "\n";
541 errs() << "\n";
542
543 // Emit per-block stats.
544 errs() << "Per-block Summary:\n";
545 for (std::map<unsigned, PerBlockIDStats>::iterator I = BlockIDStats.begin(),
546 E = BlockIDStats.end(); I != E; ++I) {
547 errs() << " Block ID #" << I->first;
548 if (const char *BlockName = GetBlockName(I->first, StreamFile))
549 errs() << " (" << BlockName << ")";
550 errs() << ":\n";
551
552 const PerBlockIDStats &Stats = I->second;
553 errs() << " Num Instances: " << Stats.NumInstances << "\n";
554 errs() << " Total Size: ";
555 PrintSize(Stats.NumBits);
556 errs() << "\n";
557 double pct = (Stats.NumBits * 100.0) / BufferSizeBits;
558 errs() << " Percent of file: " << format("%2.4f%%", pct) << "\n";
559 if (Stats.NumInstances > 1) {
560 errs() << " Average Size: ";
561 PrintSize(Stats.NumBits/(double)Stats.NumInstances);
562 errs() << "\n";
563 errs() << " Tot/Avg SubBlocks: " << Stats.NumSubBlocks << "/"
564 << Stats.NumSubBlocks/(double)Stats.NumInstances << "\n";
565 errs() << " Tot/Avg Abbrevs: " << Stats.NumAbbrevs << "/"
566 << Stats.NumAbbrevs/(double)Stats.NumInstances << "\n";
567 errs() << " Tot/Avg Records: " << Stats.NumRecords << "/"
568 << Stats.NumRecords/(double)Stats.NumInstances << "\n";
569 } else {
570 errs() << " Num SubBlocks: " << Stats.NumSubBlocks << "\n";
571 errs() << " Num Abbrevs: " << Stats.NumAbbrevs << "\n";
572 errs() << " Num Records: " << Stats.NumRecords << "\n";
573 }
574 if (Stats.NumRecords) {
575 double pct = (Stats.NumAbbreviatedRecords * 100.0) / Stats.NumRecords;
576 errs() << " Percent Abbrevs: " << format("%2.4f%%", pct) << "\n";
577 }
578 errs() << "\n";
579
580 // Print a histogram of the codes we see.
581 if (!NoHistogram && !Stats.CodeFreq.empty()) {
582 std::vector<std::pair<unsigned, unsigned> > FreqPairs; // <freq,code>
583 for (unsigned i = 0, e = Stats.CodeFreq.size(); i != e; ++i)
584 if (unsigned Freq = Stats.CodeFreq[i].NumInstances)
585 FreqPairs.push_back(std::make_pair(Freq, i));
586 std::stable_sort(FreqPairs.begin(), FreqPairs.end());
587 std::reverse(FreqPairs.begin(), FreqPairs.end());
588
589 errs() << "\tRecord Histogram:\n";
590 fprintf(stderr, "\t\t Count # Bits %% Abv Record Kind\n");
591 for (unsigned i = 0, e = FreqPairs.size(); i != e; ++i) {
592 const PerRecordStats &RecStats = Stats.CodeFreq[FreqPairs[i].second];
593
594 fprintf(stderr, "\t\t%7d %9llu ", RecStats.NumInstances,
595 (unsigned long long)RecStats.TotalBits);
596
597 if (RecStats.NumAbbrev)
598 fprintf(stderr, "%7.2f ",
599 (double)RecStats.NumAbbrev/RecStats.NumInstances*100);
600 else
601 fprintf(stderr, " ");
602
603 if (const char *CodeName =
604 GetCodeName(FreqPairs[i].second, I->first, StreamFile))
605 fprintf(stderr, "%s\n", CodeName);
606 else
607 fprintf(stderr, "UnknownCode%d\n", FreqPairs[i].second);
608 }
609 errs() << "\n";
610
611 }
612 }
613 return 0;
614 }
615
616
617 int main(int argc, char **argv) {
618 // Print a stack trace if we signal out.
619 sys::PrintStackTraceOnErrorSignal();
620 PrettyStackTraceProgram X(argc, argv);
621 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
622 cl::ParseCommandLineOptions(argc, argv, "llvm-bcanalyzer file analyzer\n");
623
624 return AnalyzeBitcode();
625 }
ZPU llvm backend wip