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Print statistics for each record kind saying the number of bits

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and % abbreviated.  For example:

	Record Histogram:
		  Count    # Bits   % Abv  Record Kind
		  25738   3424174  100.00  SM_SLOC_INSTANTIATION_ENTRY
		    814    562079  100.00  SM_SLOC_FILE_ENTRY
		    798     34110          SM_HEADER_FILE_INFO
		      3     91104  100.00  SM_SLOC_BUFFER_BLOB
		      3       498  100.00  SM_SLOC_BUFFER_ENTRY
		      1       465          SM_LINE_TABLE



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70215 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-04-27 18:15:27 +00:00
parent 2443747e45
commit c167cac8f0
1 changed files with 24 additions and 3 deletions
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27
tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
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@ -247,6 +247,10 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
struct PerRecordStats { struct PerRecordStats {
unsigned NumInstances; unsigned NumInstances;
unsigned NumAbbrev;
uint64_t TotalBits;
PerRecordStats() : NumInstances(0), NumAbbrev(0), TotalBits(0) {}
}; };
struct PerBlockIDStats { struct PerBlockIDStats {
@ -332,6 +336,8 @@ static bool ParseBlock(BitstreamCursor &Stream, unsigned IndentLevel) {
if (Stream.AtEndOfStream()) if (Stream.AtEndOfStream())
return Error("Premature end of bitstream"); return Error("Premature end of bitstream");
uint64_t RecordStartBit = Stream.GetCurrentBitNo();
// Read the code for this record. // Read the code for this record.
unsigned AbbrevID = Stream.ReadCode(); unsigned AbbrevID = Stream.ReadCode();
switch (AbbrevID) { switch (AbbrevID) {
@ -375,11 +381,17 @@ static bool ParseBlock(BitstreamCursor &Stream, unsigned IndentLevel) {
unsigned BlobLen = 0; unsigned BlobLen = 0;
unsigned Code = Stream.ReadRecord(AbbrevID, Record, BlobStart, BlobLen); unsigned Code = Stream.ReadRecord(AbbrevID, Record, BlobStart, BlobLen);
// Increment the # occurrences of this code. // Increment the # occurrences of this code.
if (BlockStats.CodeFreq.size() <= Code) if (BlockStats.CodeFreq.size() <= Code)
BlockStats.CodeFreq.resize(Code+1); BlockStats.CodeFreq.resize(Code+1);
BlockStats.CodeFreq[Code].NumInstances++; BlockStats.CodeFreq[Code].NumInstances++;
BlockStats.CodeFreq[Code].TotalBits +=
Stream.GetCurrentBitNo()-RecordStartBit;
if (AbbrevID != bitc::UNABBREV_RECORD)
BlockStats.CodeFreq[Code].NumAbbrev++;
if (Dump) { if (Dump) {
std::cerr << Indent << " <"; std::cerr << Indent << " <";
if (const char *CodeName = if (const char *CodeName =
@ -545,9 +557,18 @@ static int AnalyzeBitcode() {
std::reverse(FreqPairs.begin(), FreqPairs.end()); std::reverse(FreqPairs.begin(), FreqPairs.end());
std::cerr << "\tRecord Histogram:\n"; 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) { 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 = if (const char *CodeName =
GetCodeName(FreqPairs[i].second, I->first, StreamFile)) GetCodeName(FreqPairs[i].second, I->first, StreamFile))