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-rw-r--r--tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp27
1 files changed, 24 insertions, 3 deletions
diff --git a/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp b/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
index 30f672a..9c5a3ae 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))