1 //===-- llvm-bcanalyzer.cpp - Bitcode Analyzer --------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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
15 // --help - Output information about command line switches
16 // --dump - Dump low-level bitcode structure in readable format
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).
28 //===----------------------------------------------------------------------===//
30 #include "llvm/ADT/OwningPtr.h"
31 #include "llvm/Analysis/Verifier.h"
32 #include "llvm/Bitcode/BitstreamReader.h"
33 #include "llvm/Bitcode/LLVMBitCodes.h"
34 #include "llvm/Bitcode/ReaderWriter.h"
35 #include "llvm/Support/CommandLine.h"
36 #include "llvm/Support/Format.h"
37 #include "llvm/Support/ManagedStatic.h"
38 #include "llvm/Support/MemoryBuffer.h"
39 #include "llvm/Support/PrettyStackTrace.h"
40 #include "llvm/Support/raw_ostream.h"
41 #include "llvm/Support/Signals.h"
42 #include "llvm/Support/system_error.h"
48 static cl::opt<std::string>
49 InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
51 static cl::opt<bool> Dump("dump", cl::desc("Dump low level bitcode trace"));
53 //===----------------------------------------------------------------------===//
54 // Bitcode specific analysis.
55 //===----------------------------------------------------------------------===//
57 static cl::opt<bool> NoHistogram("disable-histogram",
58 cl::desc("Do not print per-code histogram"));
61 NonSymbolic("non-symbolic",
62 cl::desc("Emit numeric info in dump even if"
63 " symbolic info is available"));
67 /// CurStreamTypeType - A type for CurStreamType
68 enum CurStreamTypeType {
75 /// CurStreamType - If we can sniff the flavor of this stream, we can produce
77 static CurStreamTypeType CurStreamType;
80 /// GetBlockName - Return a symbolic block name if known, otherwise return
82 static const char *GetBlockName(unsigned BlockID,
83 const BitstreamReader &StreamFile) {
84 // Standard blocks for all bitcode files.
85 if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
86 if (BlockID == bitc::BLOCKINFO_BLOCK_ID)
87 return "BLOCKINFO_BLOCK";
91 // Check to see if we have a blockinfo record for this block, with a name.
92 if (const BitstreamReader::BlockInfo *Info =
93 StreamFile.getBlockInfo(BlockID)) {
94 if (!Info->Name.empty())
95 return Info->Name.c_str();
99 if (CurStreamType != LLVMIRBitstream) return 0;
103 case bitc::MODULE_BLOCK_ID: return "MODULE_BLOCK";
104 case bitc::PARAMATTR_BLOCK_ID: return "PARAMATTR_BLOCK";
105 case bitc::TYPE_BLOCK_ID_NEW: return "TYPE_BLOCK_ID";
106 case bitc::CONSTANTS_BLOCK_ID: return "CONSTANTS_BLOCK";
107 case bitc::FUNCTION_BLOCK_ID: return "FUNCTION_BLOCK";
108 case bitc::VALUE_SYMTAB_BLOCK_ID: return "VALUE_SYMTAB";
109 case bitc::METADATA_BLOCK_ID: return "METADATA_BLOCK";
110 case bitc::METADATA_ATTACHMENT_ID: return "METADATA_ATTACHMENT_BLOCK";
114 /// GetCodeName - Return a symbolic code name if known, otherwise return
116 static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
117 const BitstreamReader &StreamFile) {
118 // Standard blocks for all bitcode files.
119 if (BlockID < bitc::FIRST_APPLICATION_BLOCKID) {
120 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
123 case bitc::BLOCKINFO_CODE_SETBID: return "SETBID";
124 case bitc::BLOCKINFO_CODE_BLOCKNAME: return "BLOCKNAME";
125 case bitc::BLOCKINFO_CODE_SETRECORDNAME: return "SETRECORDNAME";
131 // Check to see if we have a blockinfo record for this record, with a name.
132 if (const BitstreamReader::BlockInfo *Info =
133 StreamFile.getBlockInfo(BlockID)) {
134 for (unsigned i = 0, e = Info->RecordNames.size(); i != e; ++i)
135 if (Info->RecordNames[i].first == CodeID)
136 return Info->RecordNames[i].second.c_str();
140 if (CurStreamType != LLVMIRBitstream) return 0;
144 case bitc::MODULE_BLOCK_ID:
147 case bitc::MODULE_CODE_VERSION: return "VERSION";
148 case bitc::MODULE_CODE_TRIPLE: return "TRIPLE";
149 case bitc::MODULE_CODE_DATALAYOUT: return "DATALAYOUT";
150 case bitc::MODULE_CODE_ASM: return "ASM";
151 case bitc::MODULE_CODE_SECTIONNAME: return "SECTIONNAME";
152 case bitc::MODULE_CODE_DEPLIB: return "DEPLIB";
153 case bitc::MODULE_CODE_GLOBALVAR: return "GLOBALVAR";
154 case bitc::MODULE_CODE_FUNCTION: return "FUNCTION";
155 case bitc::MODULE_CODE_ALIAS: return "ALIAS";
156 case bitc::MODULE_CODE_PURGEVALS: return "PURGEVALS";
157 case bitc::MODULE_CODE_GCNAME: return "GCNAME";
159 case bitc::PARAMATTR_BLOCK_ID:
162 case bitc::PARAMATTR_CODE_ENTRY: return "ENTRY";
164 case bitc::TYPE_BLOCK_ID_NEW:
167 case bitc::TYPE_CODE_NUMENTRY: return "NUMENTRY";
168 case bitc::TYPE_CODE_VOID: return "VOID";
169 case bitc::TYPE_CODE_FLOAT: return "FLOAT";
170 case bitc::TYPE_CODE_DOUBLE: return "DOUBLE";
171 case bitc::TYPE_CODE_LABEL: return "LABEL";
172 case bitc::TYPE_CODE_OPAQUE: return "OPAQUE";
173 case bitc::TYPE_CODE_INTEGER: return "INTEGER";
174 case bitc::TYPE_CODE_POINTER: return "POINTER";
175 case bitc::TYPE_CODE_ARRAY: return "ARRAY";
176 case bitc::TYPE_CODE_VECTOR: return "VECTOR";
177 case bitc::TYPE_CODE_X86_FP80: return "X86_FP80";
178 case bitc::TYPE_CODE_FP128: return "FP128";
179 case bitc::TYPE_CODE_PPC_FP128: return "PPC_FP128";
180 case bitc::TYPE_CODE_METADATA: return "METADATA";
181 case bitc::TYPE_CODE_STRUCT_ANON: return "STRUCT_ANON";
182 case bitc::TYPE_CODE_STRUCT_NAME: return "STRUCT_NAME";
183 case bitc::TYPE_CODE_STRUCT_NAMED: return "STRUCT_NAMED";
184 case bitc::TYPE_CODE_FUNCTION: return "FUNCTION";
187 case bitc::CONSTANTS_BLOCK_ID:
190 case bitc::CST_CODE_SETTYPE: return "SETTYPE";
191 case bitc::CST_CODE_NULL: return "NULL";
192 case bitc::CST_CODE_UNDEF: return "UNDEF";
193 case bitc::CST_CODE_INTEGER: return "INTEGER";
194 case bitc::CST_CODE_WIDE_INTEGER: return "WIDE_INTEGER";
195 case bitc::CST_CODE_FLOAT: return "FLOAT";
196 case bitc::CST_CODE_AGGREGATE: return "AGGREGATE";
197 case bitc::CST_CODE_STRING: return "STRING";
198 case bitc::CST_CODE_CSTRING: return "CSTRING";
199 case bitc::CST_CODE_CE_BINOP: return "CE_BINOP";
200 case bitc::CST_CODE_CE_CAST: return "CE_CAST";
201 case bitc::CST_CODE_CE_GEP: return "CE_GEP";
202 case bitc::CST_CODE_CE_INBOUNDS_GEP: return "CE_INBOUNDS_GEP";
203 case bitc::CST_CODE_CE_SELECT: return "CE_SELECT";
204 case bitc::CST_CODE_CE_EXTRACTELT: return "CE_EXTRACTELT";
205 case bitc::CST_CODE_CE_INSERTELT: return "CE_INSERTELT";
206 case bitc::CST_CODE_CE_SHUFFLEVEC: return "CE_SHUFFLEVEC";
207 case bitc::CST_CODE_CE_CMP: return "CE_CMP";
208 case bitc::CST_CODE_INLINEASM: return "INLINEASM";
209 case bitc::CST_CODE_CE_SHUFVEC_EX: return "CE_SHUFVEC_EX";
211 case bitc::FUNCTION_BLOCK_ID:
214 case bitc::FUNC_CODE_DECLAREBLOCKS: return "DECLAREBLOCKS";
216 case bitc::FUNC_CODE_INST_BINOP: return "INST_BINOP";
217 case bitc::FUNC_CODE_INST_CAST: return "INST_CAST";
218 case bitc::FUNC_CODE_INST_GEP: return "INST_GEP";
219 case bitc::FUNC_CODE_INST_INBOUNDS_GEP: return "INST_INBOUNDS_GEP";
220 case bitc::FUNC_CODE_INST_SELECT: return "INST_SELECT";
221 case bitc::FUNC_CODE_INST_EXTRACTELT: return "INST_EXTRACTELT";
222 case bitc::FUNC_CODE_INST_INSERTELT: return "INST_INSERTELT";
223 case bitc::FUNC_CODE_INST_SHUFFLEVEC: return "INST_SHUFFLEVEC";
224 case bitc::FUNC_CODE_INST_CMP: return "INST_CMP";
226 case bitc::FUNC_CODE_INST_RET: return "INST_RET";
227 case bitc::FUNC_CODE_INST_BR: return "INST_BR";
228 case bitc::FUNC_CODE_INST_SWITCH: return "INST_SWITCH";
229 case bitc::FUNC_CODE_INST_INVOKE: return "INST_INVOKE";
230 case bitc::FUNC_CODE_INST_UNWIND: return "INST_UNWIND";
231 case bitc::FUNC_CODE_INST_UNREACHABLE: return "INST_UNREACHABLE";
233 case bitc::FUNC_CODE_INST_PHI: return "INST_PHI";
234 case bitc::FUNC_CODE_INST_ALLOCA: return "INST_ALLOCA";
235 case bitc::FUNC_CODE_INST_LOAD: return "INST_LOAD";
236 case bitc::FUNC_CODE_INST_VAARG: return "INST_VAARG";
237 case bitc::FUNC_CODE_INST_STORE: return "INST_STORE";
238 case bitc::FUNC_CODE_INST_EXTRACTVAL: return "INST_EXTRACTVAL";
239 case bitc::FUNC_CODE_INST_INSERTVAL: return "INST_INSERTVAL";
240 case bitc::FUNC_CODE_INST_CMP2: return "INST_CMP2";
241 case bitc::FUNC_CODE_INST_VSELECT: return "INST_VSELECT";
242 case bitc::FUNC_CODE_DEBUG_LOC_AGAIN: return "DEBUG_LOC_AGAIN";
243 case bitc::FUNC_CODE_INST_CALL: return "INST_CALL";
244 case bitc::FUNC_CODE_DEBUG_LOC: return "DEBUG_LOC";
246 case bitc::VALUE_SYMTAB_BLOCK_ID:
249 case bitc::VST_CODE_ENTRY: return "ENTRY";
250 case bitc::VST_CODE_BBENTRY: return "BBENTRY";
252 case bitc::METADATA_ATTACHMENT_ID:
255 case bitc::METADATA_ATTACHMENT: return "METADATA_ATTACHMENT";
257 case bitc::METADATA_BLOCK_ID:
260 case bitc::METADATA_STRING: return "METADATA_STRING";
261 case bitc::METADATA_NAME: return "METADATA_NAME";
262 case bitc::METADATA_KIND: return "METADATA_KIND";
263 case bitc::METADATA_NODE: return "METADATA_NODE";
264 case bitc::METADATA_FN_NODE: return "METADATA_FN_NODE";
265 case bitc::METADATA_NAMED_NODE: return "METADATA_NAMED_NODE";
270 struct PerRecordStats {
271 unsigned NumInstances;
275 PerRecordStats() : NumInstances(0), NumAbbrev(0), TotalBits(0) {}
278 struct PerBlockIDStats {
279 /// NumInstances - This the number of times this block ID has been seen.
280 unsigned NumInstances;
282 /// NumBits - The total size in bits of all of these blocks.
285 /// NumSubBlocks - The total number of blocks these blocks contain.
286 unsigned NumSubBlocks;
288 /// NumAbbrevs - The total number of abbreviations.
291 /// NumRecords - The total number of records these blocks contain, and the
292 /// number that are abbreviated.
293 unsigned NumRecords, NumAbbreviatedRecords;
295 /// CodeFreq - Keep track of the number of times we see each code.
296 std::vector<PerRecordStats> CodeFreq;
299 : NumInstances(0), NumBits(0),
300 NumSubBlocks(0), NumAbbrevs(0), NumRecords(0), NumAbbreviatedRecords(0) {}
303 static std::map<unsigned, PerBlockIDStats> BlockIDStats;
307 /// Error - All bitcode analysis errors go through this function, making this a
308 /// good place to breakpoint if debugging.
309 static bool Error(const std::string &Err) {
310 errs() << Err << "\n";
314 /// ParseBlock - Read a block, updating statistics, etc.
315 static bool ParseBlock(BitstreamCursor &Stream, unsigned IndentLevel) {
316 std::string Indent(IndentLevel*2, ' ');
317 uint64_t BlockBitStart = Stream.GetCurrentBitNo();
318 unsigned BlockID = Stream.ReadSubBlockID();
320 // Get the statistics for this BlockID.
321 PerBlockIDStats &BlockStats = BlockIDStats[BlockID];
323 BlockStats.NumInstances++;
325 // BLOCKINFO is a special part of the stream.
326 if (BlockID == bitc::BLOCKINFO_BLOCK_ID) {
327 if (Dump) errs() << Indent << "<BLOCKINFO_BLOCK/>\n";
328 if (Stream.ReadBlockInfoBlock())
329 return Error("Malformed BlockInfoBlock");
330 uint64_t BlockBitEnd = Stream.GetCurrentBitNo();
331 BlockStats.NumBits += BlockBitEnd-BlockBitStart;
335 unsigned NumWords = 0;
336 if (Stream.EnterSubBlock(BlockID, &NumWords))
337 return Error("Malformed block record");
339 const char *BlockName = 0;
341 errs() << Indent << "<";
342 if ((BlockName = GetBlockName(BlockID, *Stream.getBitStreamReader())))
345 errs() << "UnknownBlock" << BlockID;
347 if (NonSymbolic && BlockName)
348 errs() << " BlockID=" << BlockID;
350 errs() << " NumWords=" << NumWords
351 << " BlockCodeSize=" << Stream.GetAbbrevIDWidth() << ">\n";
354 SmallVector<uint64_t, 64> Record;
356 // Read all the records for this block.
358 if (Stream.AtEndOfStream())
359 return Error("Premature end of bitstream");
361 uint64_t RecordStartBit = Stream.GetCurrentBitNo();
363 // Read the code for this record.
364 unsigned AbbrevID = Stream.ReadCode();
366 case bitc::END_BLOCK: {
367 if (Stream.ReadBlockEnd())
368 return Error("Error at end of block");
369 uint64_t BlockBitEnd = Stream.GetCurrentBitNo();
370 BlockStats.NumBits += BlockBitEnd-BlockBitStart;
372 errs() << Indent << "</";
374 errs() << BlockName << ">\n";
376 errs() << "UnknownBlock" << BlockID << ">\n";
380 case bitc::ENTER_SUBBLOCK: {
381 uint64_t SubBlockBitStart = Stream.GetCurrentBitNo();
382 if (ParseBlock(Stream, IndentLevel+1))
384 ++BlockStats.NumSubBlocks;
385 uint64_t SubBlockBitEnd = Stream.GetCurrentBitNo();
387 // Don't include subblock sizes in the size of this block.
388 BlockBitStart += SubBlockBitEnd-SubBlockBitStart;
391 case bitc::DEFINE_ABBREV:
392 Stream.ReadAbbrevRecord();
393 ++BlockStats.NumAbbrevs;
398 ++BlockStats.NumRecords;
399 if (AbbrevID != bitc::UNABBREV_RECORD)
400 ++BlockStats.NumAbbreviatedRecords;
402 const char *BlobStart = 0;
403 unsigned BlobLen = 0;
404 unsigned Code = Stream.ReadRecord(AbbrevID, Record, BlobStart, BlobLen);
408 // Increment the # occurrences of this code.
409 if (BlockStats.CodeFreq.size() <= Code)
410 BlockStats.CodeFreq.resize(Code+1);
411 BlockStats.CodeFreq[Code].NumInstances++;
412 BlockStats.CodeFreq[Code].TotalBits +=
413 Stream.GetCurrentBitNo()-RecordStartBit;
414 if (AbbrevID != bitc::UNABBREV_RECORD)
415 BlockStats.CodeFreq[Code].NumAbbrev++;
418 errs() << Indent << " <";
419 if (const char *CodeName =
420 GetCodeName(Code, BlockID, *Stream.getBitStreamReader()))
423 errs() << "UnknownCode" << Code;
425 GetCodeName(Code, BlockID, *Stream.getBitStreamReader()))
426 errs() << " codeid=" << Code;
427 if (AbbrevID != bitc::UNABBREV_RECORD)
428 errs() << " abbrevid=" << AbbrevID;
430 for (unsigned i = 0, e = Record.size(); i != e; ++i)
431 errs() << " op" << i << "=" << (int64_t)Record[i];
436 errs() << " blob data = ";
437 bool BlobIsPrintable = true;
438 for (unsigned i = 0; i != BlobLen; ++i)
439 if (!isprint(BlobStart[i])) {
440 BlobIsPrintable = false;
445 errs() << "'" << std::string(BlobStart, BlobStart+BlobLen) <<"'";
447 errs() << "unprintable, " << BlobLen << " bytes.";
458 static void PrintSize(double Bits) {
459 fprintf(stderr, "%.2f/%.2fB/%luW", Bits, Bits/8,(unsigned long)(Bits/32));
461 static void PrintSize(uint64_t Bits) {
462 fprintf(stderr, "%lub/%.2fB/%luW", (unsigned long)Bits,
463 (double)Bits/8, (unsigned long)(Bits/32));
467 /// AnalyzeBitcode - Analyze the bitcode file specified by InputFilename.
468 static int AnalyzeBitcode() {
469 // Read the input file.
470 OwningPtr<MemoryBuffer> MemBuf;
473 MemoryBuffer::getFileOrSTDIN(InputFilename.c_str(), MemBuf))
474 return Error("Error reading '" + InputFilename + "': " + ec.message());
476 if (MemBuf->getBufferSize() & 3)
477 return Error("Bitcode stream should be a multiple of 4 bytes in length");
479 unsigned char *BufPtr = (unsigned char *)MemBuf->getBufferStart();
480 unsigned char *EndBufPtr = BufPtr+MemBuf->getBufferSize();
482 // If we have a wrapper header, parse it and ignore the non-bc file contents.
483 // The magic number is 0x0B17C0DE stored in little endian.
484 if (isBitcodeWrapper(BufPtr, EndBufPtr))
485 if (SkipBitcodeWrapperHeader(BufPtr, EndBufPtr))
486 return Error("Invalid bitcode wrapper header");
488 BitstreamReader StreamFile(BufPtr, EndBufPtr);
489 BitstreamCursor Stream(StreamFile);
490 StreamFile.CollectBlockInfoNames();
492 // Read the stream signature.
494 Signature[0] = Stream.Read(8);
495 Signature[1] = Stream.Read(8);
496 Signature[2] = Stream.Read(4);
497 Signature[3] = Stream.Read(4);
498 Signature[4] = Stream.Read(4);
499 Signature[5] = Stream.Read(4);
501 // Autodetect the file contents, if it is one we know.
502 CurStreamType = UnknownBitstream;
503 if (Signature[0] == 'B' && Signature[1] == 'C' &&
504 Signature[2] == 0x0 && Signature[3] == 0xC &&
505 Signature[4] == 0xE && Signature[5] == 0xD)
506 CurStreamType = LLVMIRBitstream;
508 unsigned NumTopBlocks = 0;
510 // Parse the top-level structure. We only allow blocks at the top-level.
511 while (!Stream.AtEndOfStream()) {
512 unsigned Code = Stream.ReadCode();
513 if (Code != bitc::ENTER_SUBBLOCK)
514 return Error("Invalid record at top-level");
516 if (ParseBlock(Stream, 0))
521 if (Dump) errs() << "\n\n";
523 uint64_t BufferSizeBits = (EndBufPtr-BufPtr)*CHAR_BIT;
524 // Print a summary of the read file.
525 errs() << "Summary of " << InputFilename << ":\n";
526 errs() << " Total size: ";
527 PrintSize(BufferSizeBits);
529 errs() << " Stream type: ";
530 switch (CurStreamType) {
531 default: assert(0 && "Unknown bitstream type");
532 case UnknownBitstream: errs() << "unknown\n"; break;
533 case LLVMIRBitstream: errs() << "LLVM IR\n"; break;
535 errs() << " # Toplevel Blocks: " << NumTopBlocks << "\n";
538 // Emit per-block stats.
539 errs() << "Per-block Summary:\n";
540 for (std::map<unsigned, PerBlockIDStats>::iterator I = BlockIDStats.begin(),
541 E = BlockIDStats.end(); I != E; ++I) {
542 errs() << " Block ID #" << I->first;
543 if (const char *BlockName = GetBlockName(I->first, StreamFile))
544 errs() << " (" << BlockName << ")";
547 const PerBlockIDStats &Stats = I->second;
548 errs() << " Num Instances: " << Stats.NumInstances << "\n";
549 errs() << " Total Size: ";
550 PrintSize(Stats.NumBits);
552 double pct = (Stats.NumBits * 100.0) / BufferSizeBits;
553 errs() << " Percent of file: " << format("%2.4f%%", pct) << "\n";
554 if (Stats.NumInstances > 1) {
555 errs() << " Average Size: ";
556 PrintSize(Stats.NumBits/(double)Stats.NumInstances);
558 errs() << " Tot/Avg SubBlocks: " << Stats.NumSubBlocks << "/"
559 << Stats.NumSubBlocks/(double)Stats.NumInstances << "\n";
560 errs() << " Tot/Avg Abbrevs: " << Stats.NumAbbrevs << "/"
561 << Stats.NumAbbrevs/(double)Stats.NumInstances << "\n";
562 errs() << " Tot/Avg Records: " << Stats.NumRecords << "/"
563 << Stats.NumRecords/(double)Stats.NumInstances << "\n";
565 errs() << " Num SubBlocks: " << Stats.NumSubBlocks << "\n";
566 errs() << " Num Abbrevs: " << Stats.NumAbbrevs << "\n";
567 errs() << " Num Records: " << Stats.NumRecords << "\n";
569 if (Stats.NumRecords) {
570 double pct = (Stats.NumAbbreviatedRecords * 100.0) / Stats.NumRecords;
571 errs() << " Percent Abbrevs: " << format("%2.4f%%", pct) << "\n";
575 // Print a histogram of the codes we see.
576 if (!NoHistogram && !Stats.CodeFreq.empty()) {
577 std::vector<std::pair<unsigned, unsigned> > FreqPairs; // <freq,code>
578 for (unsigned i = 0, e = Stats.CodeFreq.size(); i != e; ++i)
579 if (unsigned Freq = Stats.CodeFreq[i].NumInstances)
580 FreqPairs.push_back(std::make_pair(Freq, i));
581 std::stable_sort(FreqPairs.begin(), FreqPairs.end());
582 std::reverse(FreqPairs.begin(), FreqPairs.end());
584 errs() << "\tRecord Histogram:\n";
585 fprintf(stderr, "\t\t Count # Bits %% Abv Record Kind\n");
586 for (unsigned i = 0, e = FreqPairs.size(); i != e; ++i) {
587 const PerRecordStats &RecStats = Stats.CodeFreq[FreqPairs[i].second];
589 fprintf(stderr, "\t\t%7d %9lu ", RecStats.NumInstances,
590 (unsigned long)RecStats.TotalBits);
592 if (RecStats.NumAbbrev)
593 fprintf(stderr, "%7.2f ",
594 (double)RecStats.NumAbbrev/RecStats.NumInstances*100);
596 fprintf(stderr, " ");
598 if (const char *CodeName =
599 GetCodeName(FreqPairs[i].second, I->first, StreamFile))
600 fprintf(stderr, "%s\n", CodeName);
602 fprintf(stderr, "UnknownCode%d\n", FreqPairs[i].second);
612 int main(int argc, char **argv) {
613 // Print a stack trace if we signal out.
614 sys::PrintStackTraceOnErrorSignal();
615 PrettyStackTraceProgram X(argc, argv);
616 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
617 cl::ParseCommandLineOptions(argc, argv, "llvm-bcanalyzer file analyzer\n");
619 return AnalyzeBitcode();