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-rw-r--r--lib/IR/GCOV.cpp183
1 files changed, 114 insertions, 69 deletions
diff --git a/lib/IR/GCOV.cpp b/lib/IR/GCOV.cpp
index f69bdc4f8c..f2099d6baf 100644
--- a/lib/IR/GCOV.cpp
+++ b/lib/IR/GCOV.cpp
@@ -26,11 +26,6 @@ using namespace llvm;
//===----------------------------------------------------------------------===//
// GCOVFile implementation.
-/// ~GCOVFile - Delete GCOVFile and its content.
-GCOVFile::~GCOVFile() {
- DeleteContainerPointers(Functions);
-}
-
/// readGCNO - Read GCNO buffer.
bool GCOVFile::readGCNO(GCOVBuffer &Buffer) {
if (!Buffer.readGCNOFormat()) return false;
@@ -39,10 +34,10 @@ bool GCOVFile::readGCNO(GCOVBuffer &Buffer) {
if (!Buffer.readInt(Checksum)) return false;
while (true) {
if (!Buffer.readFunctionTag()) break;
- GCOVFunction *GFun = new GCOVFunction(*this);
+ auto GFun = make_unique<GCOVFunction>(*this);
if (!GFun->readGCNO(Buffer, Version))
return false;
- Functions.push_back(GFun);
+ Functions.push_back(std::move(GFun));
}
GCNOInitialized = true;
@@ -97,17 +92,15 @@ bool GCOVFile::readGCDA(GCOVBuffer &Buffer) {
/// dump - Dump GCOVFile content to dbgs() for debugging purposes.
void GCOVFile::dump() const {
- for (SmallVectorImpl<GCOVFunction *>::const_iterator I = Functions.begin(),
- E = Functions.end(); I != E; ++I)
- (*I)->dump();
+ for (const auto &FPtr : Functions)
+ FPtr->dump();
}
/// collectLineCounts - Collect line counts. This must be used after
/// reading .gcno and .gcda files.
void GCOVFile::collectLineCounts(FileInfo &FI) {
- for (SmallVectorImpl<GCOVFunction *>::iterator I = Functions.begin(),
- E = Functions.end(); I != E; ++I)
- (*I)->collectLineCounts(FI);
+ for (const auto &FPtr : Functions)
+ FPtr->collectLineCounts(FI);
FI.setRunCount(RunCount);
FI.setProgramCount(ProgramCount);
}
@@ -115,12 +108,6 @@ void GCOVFile::collectLineCounts(FileInfo &FI) {
//===----------------------------------------------------------------------===//
// GCOVFunction implementation.
-/// ~GCOVFunction - Delete GCOVFunction and its content.
-GCOVFunction::~GCOVFunction() {
- DeleteContainerPointers(Blocks);
- DeleteContainerPointers(Edges);
-}
-
/// readGCNO - Read a function from the GCNO buffer. Return false if an error
/// occurs.
bool GCOVFunction::readGCNO(GCOVBuffer &Buff, GCOV::GCOVVersion Version) {
@@ -150,7 +137,7 @@ bool GCOVFunction::readGCNO(GCOVBuffer &Buff, GCOV::GCOVVersion Version) {
if (!Buff.readInt(BlockCount)) return false;
for (uint32_t i = 0, e = BlockCount; i != e; ++i) {
if (!Buff.readInt(Dummy)) return false; // Block flags;
- Blocks.push_back(new GCOVBlock(*this, i));
+ Blocks.push_back(make_unique<GCOVBlock>(*this, i));
}
// read edges.
@@ -168,8 +155,8 @@ bool GCOVFunction::readGCNO(GCOVBuffer &Buff, GCOV::GCOVVersion Version) {
for (uint32_t i = 0, e = EdgeCount; i != e; ++i) {
uint32_t Dst;
if (!Buff.readInt(Dst)) return false;
- GCOVEdge *Edge = new GCOVEdge(Blocks[BlockNo], Blocks[Dst]);
- Edges.push_back(Edge);
+ Edges.push_back(make_unique<GCOVEdge>(*Blocks[BlockNo], *Blocks[Dst]));
+ GCOVEdge *Edge = Edges.back().get();
Blocks[BlockNo]->addDstEdge(Edge);
Blocks[Dst]->addSrcEdge(Edge);
if (!Buff.readInt(Dummy)) return false; // Edge flag
@@ -179,34 +166,46 @@ bool GCOVFunction::readGCNO(GCOVBuffer &Buff, GCOV::GCOVVersion Version) {
// read line table.
while (Buff.readLineTag()) {
uint32_t LineTableLength;
+ // Read the length of this line table.
if (!Buff.readInt(LineTableLength)) return false;
uint32_t EndPos = Buff.getCursor() + LineTableLength*4;
uint32_t BlockNo;
+ // Read the block number this table is associated with.
if (!Buff.readInt(BlockNo)) return false;
if (BlockNo >= BlockCount) {
errs() << "Unexpected block number: " << BlockNo << " (in " << Name
<< ").\n";
return false;
}
- GCOVBlock *Block = Blocks[BlockNo];
- if (!Buff.readInt(Dummy)) return false; // flag
- while (Buff.getCursor() != (EndPos - 4)) {
+ GCOVBlock &Block = *Blocks[BlockNo];
+ // Read the word that pads the beginning of the line table. This may be a
+ // flag of some sort, but seems to always be zero.
+ if (!Buff.readInt(Dummy)) return false;
+
+ // Line information starts here and continues up until the last word.
+ if (Buff.getCursor() != (EndPos - sizeof(uint32_t))) {
StringRef F;
+ // Read the source file name.
if (!Buff.readString(F)) return false;
if (Filename != F) {
errs() << "Multiple sources for a single basic block: " << Filename
<< " != " << F << " (in " << Name << ").\n";
return false;
}
- if (Buff.getCursor() == (EndPos - 4)) break;
- while (true) {
+ // Read lines up to, but not including, the null terminator.
+ while (Buff.getCursor() < (EndPos - 2 * sizeof(uint32_t))) {
uint32_t Line;
if (!Buff.readInt(Line)) return false;
- if (!Line) break;
- Block->addLine(Line);
+ // Line 0 means this instruction was injected by the compiler. Skip it.
+ if (!Line) continue;
+ Block.addLine(Line);
}
+ // Read the null terminator.
+ if (!Buff.readInt(Dummy)) return false;
}
- if (!Buff.readInt(Dummy)) return false; // flag
+ // The last word is either a flag or padding, it isn't clear which. Skip
+ // over it.
+ if (!Buff.readInt(Dummy)) return false;
}
return true;
}
@@ -300,9 +299,8 @@ uint64_t GCOVFunction::getExitCount() const {
/// dump - Dump GCOVFunction content to dbgs() for debugging purposes.
void GCOVFunction::dump() const {
dbgs() << "===== " << Name << " @ " << Filename << ":" << LineNumber << "\n";
- for (SmallVectorImpl<GCOVBlock *>::const_iterator I = Blocks.begin(),
- E = Blocks.end(); I != E; ++I)
- (*I)->dump();
+ for (const auto &Block : Blocks)
+ Block->dump();
}
/// collectLineCounts - Collect line counts. This must be used after
@@ -313,9 +311,8 @@ void GCOVFunction::collectLineCounts(FileInfo &FI) {
if (LineNumber == 0)
return;
- for (SmallVectorImpl<GCOVBlock *>::iterator I = Blocks.begin(),
- E = Blocks.end(); I != E; ++I)
- (*I)->collectLineCounts(FI);
+ for (const auto &Block : Blocks)
+ Block->collectLineCounts(FI);
FI.addFunctionLine(Filename, LineNumber, this);
}
@@ -335,8 +332,8 @@ void GCOVBlock::addCount(size_t DstEdgeNo, uint64_t N) {
assert(DstEdgeNo < DstEdges.size()); // up to caller to ensure EdgeNo is valid
DstEdges[DstEdgeNo]->Count = N;
Counter += N;
- if (!DstEdges[DstEdgeNo]->Dst->getNumDstEdges())
- DstEdges[DstEdgeNo]->Dst->Counter += N;
+ if (!DstEdges[DstEdgeNo]->Dst.getNumDstEdges())
+ DstEdges[DstEdgeNo]->Dst.Counter += N;
}
/// sortDstEdges - Sort destination edges by block number, nop if already
@@ -363,7 +360,7 @@ void GCOVBlock::dump() const {
dbgs() << "\tSource Edges : ";
for (EdgeIterator I = SrcEdges.begin(), E = SrcEdges.end(); I != E; ++I) {
const GCOVEdge *Edge = *I;
- dbgs() << Edge->Src->Number << " (" << Edge->Count << "), ";
+ dbgs() << Edge->Src.Number << " (" << Edge->Count << "), ";
}
dbgs() << "\n";
}
@@ -371,7 +368,7 @@ void GCOVBlock::dump() const {
dbgs() << "\tDestination Edges : ";
for (EdgeIterator I = DstEdges.begin(), E = DstEdges.end(); I != E; ++I) {
const GCOVEdge *Edge = *I;
- dbgs() << Edge->Dst->Number << " (" << Edge->Count << "), ";
+ dbgs() << Edge->Dst.Number << " (" << Edge->Count << "), ";
}
dbgs() << "\n";
}
@@ -435,11 +432,35 @@ static raw_ostream &operator<<(raw_ostream &OS, const formatBranchInfo &FBI) {
return OS;
}
+namespace {
+class LineConsumer {
+ std::unique_ptr<MemoryBuffer> Buffer;
+ StringRef Remaining;
+public:
+ LineConsumer(StringRef Filename) {
+ if (error_code EC = MemoryBuffer::getFileOrSTDIN(Filename, Buffer)) {
+ errs() << Filename << ": " << EC.message() << "\n";
+ Remaining = "";
+ } else
+ Remaining = Buffer->getBuffer();
+ }
+ bool empty() { return Remaining.empty(); }
+ void printNext(raw_ostream &OS, uint32_t LineNum) {
+ StringRef Line;
+ if (empty())
+ Line = "/*EOF*/";
+ else
+ std::tie(Line, Remaining) = Remaining.split("\n");
+ OS << format("%5u:", LineNum) << Line << "\n";
+ }
+};
+}
+
/// Convert a path to a gcov filename. If PreservePaths is true, this
/// translates "/" to "#", ".." to "^", and drops ".", to match gcov.
static std::string mangleCoveragePath(StringRef Filename, bool PreservePaths) {
if (!PreservePaths)
- return (sys::path::filename(Filename) + ".gcov").str();
+ return sys::path::filename(Filename).str();
// This behaviour is defined by gcov in terms of text replacements, so it's
// not likely to do anything useful on filesystems with different textual
@@ -467,28 +488,52 @@ static std::string mangleCoveragePath(StringRef Filename, bool PreservePaths) {
if (S < I)
Result.append(S, I);
- Result.append(".gcov");
return Result.str();
}
+std::string FileInfo::getCoveragePath(StringRef Filename,
+ StringRef MainFilename) {
+ if (Options.NoOutput)
+ // This is probably a bug in gcov, but when -n is specified, paths aren't
+ // mangled at all, and the -l and -p options are ignored. Here, we do the
+ // same.
+ return Filename;
+
+ std::string CoveragePath;
+ if (Options.LongFileNames && !Filename.equals(MainFilename))
+ CoveragePath =
+ mangleCoveragePath(MainFilename, Options.PreservePaths) + "##";
+ CoveragePath +=
+ mangleCoveragePath(Filename, Options.PreservePaths) + ".gcov";
+ return CoveragePath;
+}
+
+std::unique_ptr<raw_ostream>
+FileInfo::openCoveragePath(StringRef CoveragePath) {
+ if (Options.NoOutput)
+ return llvm::make_unique<raw_null_ostream>();
+
+ std::string ErrorInfo;
+ auto OS = llvm::make_unique<raw_fd_ostream>(CoveragePath.str().c_str(),
+ ErrorInfo, sys::fs::F_Text);
+ if (!ErrorInfo.empty()) {
+ errs() << ErrorInfo << "\n";
+ return llvm::make_unique<raw_null_ostream>();
+ }
+ return std::move(OS);
+}
+
/// print - Print source files with collected line count information.
-void FileInfo::print(StringRef GCNOFile, StringRef GCDAFile) {
+void FileInfo::print(StringRef MainFilename, StringRef GCNOFile,
+ StringRef GCDAFile) {
for (StringMap<LineData>::const_iterator I = LineInfo.begin(),
E = LineInfo.end(); I != E; ++I) {
StringRef Filename = I->first();
- std::unique_ptr<MemoryBuffer> Buff;
- if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
- errs() << Filename << ": " << ec.message() << "\n";
- return;
- }
- StringRef AllLines = Buff->getBuffer();
+ auto AllLines = LineConsumer(Filename);
- std::string CoveragePath = mangleCoveragePath(Filename,
- Options.PreservePaths);
- std::string ErrorInfo;
- raw_fd_ostream OS(CoveragePath.c_str(), ErrorInfo, sys::fs::F_Text);
- if (!ErrorInfo.empty())
- errs() << ErrorInfo << "\n";
+ std::string CoveragePath = getCoveragePath(Filename, MainFilename);
+ std::unique_ptr<raw_ostream> S = openCoveragePath(CoveragePath);
+ raw_ostream &OS = *S;
OS << " -: 0:Source:" << Filename << "\n";
OS << " -: 0:Graph:" << GCNOFile << "\n";
@@ -498,7 +543,8 @@ void FileInfo::print(StringRef GCNOFile, StringRef GCDAFile) {
const LineData &Line = I->second;
GCOVCoverage FileCoverage(Filename);
- for (uint32_t LineIndex = 0; !AllLines.empty(); ++LineIndex) {
+ for (uint32_t LineIndex = 0;
+ LineIndex < Line.LastLine || !AllLines.empty(); ++LineIndex) {
if (Options.BranchInfo) {
FunctionLines::const_iterator FuncsIt = Line.Functions.find(LineIndex);
if (FuncsIt != Line.Functions.end())
@@ -509,9 +555,7 @@ void FileInfo::print(StringRef GCNOFile, StringRef GCDAFile) {
if (BlocksIt == Line.Blocks.end()) {
// No basic blocks are on this line. Not an executable line of code.
OS << " -:";
- std::pair<StringRef, StringRef> P = AllLines.split('\n');
- OS << format("%5u:", LineIndex+1) << P.first << "\n";
- AllLines = P.second;
+ AllLines.printNext(OS, LineIndex + 1);
} else {
const BlockVector &Blocks = BlocksIt->second;
@@ -573,9 +617,7 @@ void FileInfo::print(StringRef GCNOFile, StringRef GCDAFile) {
}
++FileCoverage.LogicalLines;
- std::pair<StringRef, StringRef> P = AllLines.split('\n');
- OS << format("%5u:", LineIndex+1) << P.first << "\n";
- AllLines = P.second;
+ AllLines.printNext(OS, LineIndex + 1);
uint32_t BlockNo = 0;
uint32_t EdgeNo = 0;
@@ -605,10 +647,11 @@ void FileInfo::print(StringRef GCNOFile, StringRef GCDAFile) {
if (Options.FuncCoverage)
printFuncCoverage();
printFileCoverage();
+ return;
}
/// printFunctionSummary - Print function and block summary.
-void FileInfo::printFunctionSummary(raw_fd_ostream &OS,
+void FileInfo::printFunctionSummary(raw_ostream &OS,
const FunctionVector &Funcs) const {
for (FunctionVector::const_iterator I = Funcs.begin(), E = Funcs.end();
I != E; ++I) {
@@ -617,8 +660,8 @@ void FileInfo::printFunctionSummary(raw_fd_ostream &OS,
uint32_t BlocksExec = 0;
for (GCOVFunction::BlockIterator I = Func->block_begin(),
E = Func->block_end(); I != E; ++I) {
- const GCOVBlock *Block = *I;
- if (Block->getNumDstEdges() && Block->getCount())
+ const GCOVBlock &Block = **I;
+ if (Block.getNumDstEdges() && Block.getCount())
++BlocksExec;
}
@@ -630,7 +673,7 @@ void FileInfo::printFunctionSummary(raw_fd_ostream &OS,
}
/// printBlockInfo - Output counts for each block.
-void FileInfo::printBlockInfo(raw_fd_ostream &OS, const GCOVBlock &Block,
+void FileInfo::printBlockInfo(raw_ostream &OS, const GCOVBlock &Block,
uint32_t LineIndex, uint32_t &BlockNo) const {
if (Block.getCount() == 0)
OS << " $$$$$:";
@@ -640,7 +683,7 @@ void FileInfo::printBlockInfo(raw_fd_ostream &OS, const GCOVBlock &Block,
}
/// printBranchInfo - Print conditional branch probabilities.
-void FileInfo::printBranchInfo(raw_fd_ostream &OS, const GCOVBlock &Block,
+void FileInfo::printBranchInfo(raw_ostream &OS, const GCOVBlock &Block,
GCOVCoverage &Coverage, uint32_t &EdgeNo) {
SmallVector<uint64_t, 16> BranchCounts;
uint64_t TotalCounts = 0;
@@ -670,7 +713,7 @@ void FileInfo::printBranchInfo(raw_fd_ostream &OS, const GCOVBlock &Block,
}
/// printUncondBranchInfo - Print unconditional branch probabilities.
-void FileInfo::printUncondBranchInfo(raw_fd_ostream &OS, uint32_t &EdgeNo,
+void FileInfo::printUncondBranchInfo(raw_ostream &OS, uint32_t &EdgeNo,
uint64_t Count) const {
OS << format("unconditional %2u ", EdgeNo++)
<< formatBranchInfo(Options, Count, Count) << "\n";
@@ -716,6 +759,8 @@ void FileInfo::printFileCoverage() const {
const GCOVCoverage &Coverage = I->second;
outs() << "File '" << Coverage.Name << "'\n";
printCoverage(Coverage);
- outs() << Coverage.Name << ":creating '" << Filename << "'\n\n";
+ if (!Options.NoOutput)
+ outs() << Coverage.Name << ":creating '" << Filename << "'\n";
+ outs() << "\n";
}
}
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