diff options
| -rw-r--r-- | tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp b/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp index 30f672a81d..9c5a3ae8ae 100644 --- a/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp +++ b/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp @@ -247,6 +247,10 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID, struct PerRecordStats { unsigned NumInstances; + unsigned NumAbbrev; + uint64_t TotalBits; + + PerRecordStats() : NumInstances(0), NumAbbrev(0), TotalBits(0) {} }; struct PerBlockIDStats { @@ -332,6 +336,8 @@ static bool ParseBlock(BitstreamCursor &Stream, unsigned IndentLevel) { if (Stream.AtEndOfStream()) return Error("Premature end of bitstream"); + uint64_t RecordStartBit = Stream.GetCurrentBitNo(); + // Read the code for this record. unsigned AbbrevID = Stream.ReadCode(); switch (AbbrevID) { @@ -375,11 +381,17 @@ static bool ParseBlock(BitstreamCursor &Stream, unsigned IndentLevel) { unsigned BlobLen = 0; unsigned Code = Stream.ReadRecord(AbbrevID, Record, BlobStart, BlobLen); + + // Increment the # occurrences of this code. if (BlockStats.CodeFreq.size() <= Code) BlockStats.CodeFreq.resize(Code+1); BlockStats.CodeFreq[Code].NumInstances++; - + BlockStats.CodeFreq[Code].TotalBits += + Stream.GetCurrentBitNo()-RecordStartBit; + if (AbbrevID != bitc::UNABBREV_RECORD) + BlockStats.CodeFreq[Code].NumAbbrev++; + if (Dump) { std::cerr << Indent << " <"; if (const char *CodeName = @@ -545,9 +557,18 @@ static int AnalyzeBitcode() { std::reverse(FreqPairs.begin(), FreqPairs.end()); std::cerr << "\tRecord Histogram:\n"; - fprintf(stderr, "\t\t Count Record Kind\n"); + fprintf(stderr, "\t\t Count # Bits %% Abv Record Kind\n"); for (unsigned i = 0, e = FreqPairs.size(); i != e; ++i) { - fprintf(stderr, "\t\t%7d ", FreqPairs[i].first); + const PerRecordStats &RecStats = Stats.CodeFreq[FreqPairs[i].second]; + + fprintf(stderr, "\t\t%7d %9llu ", RecStats.NumInstances, + RecStats.TotalBits); + + if (RecStats.NumAbbrev) + fprintf(stderr, "%7.2f ", + (double)RecStats.NumAbbrev/RecStats.NumInstances*100); + else + fprintf(stderr, " "); if (const char *CodeName = GetCodeName(FreqPairs[i].second, I->first, StreamFile)) |