-//===-- llvm/Support/GCOV.h - LLVM coverage tool ----------------*- C++ -*-===//
+//===- GCOV.h - LLVM coverage tool ----------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
//
-// This header provides the interface to read and write coverage files that
+// This header provides the interface to read and write coverage files that
// use 'gcov' format.
//
//===----------------------------------------------------------------------===//
#define LLVM_SUPPORT_GCOV_H
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/MemoryBuffer.h"
};
} // end GCOV namespace
+/// GCOVOptions - A struct for passing gcov options between functions.
+struct GCOVOptions {
+ GCOVOptions(bool A, bool B, bool C, bool F, bool P, bool U, bool L, bool N)
+ : AllBlocks(A), BranchInfo(B), BranchCount(C), FuncCoverage(F),
+ PreservePaths(P), UncondBranch(U), LongFileNames(L), NoOutput(N) {}
+
+ bool AllBlocks;
+ bool BranchInfo;
+ bool BranchCount;
+ bool FuncCoverage;
+ bool PreservePaths;
+ bool UncondBranch;
+ bool LongFileNames;
+ bool NoOutput;
+};
+
/// GCOVBuffer - A wrapper around MemoryBuffer to provide GCOV specific
/// read operations.
class GCOVBuffer {
/// cursor and return true otherwise return false.
bool readFunctionTag() {
StringRef Tag = Buffer->getBuffer().slice(Cursor, Cursor+4);
- if (Tag.empty() ||
+ if (Tag.empty() ||
Tag[0] != '\0' || Tag[1] != '\0' ||
Tag[2] != '\0' || Tag[3] != '\1') {
return false;
/// cursor and return true otherwise return false.
bool readBlockTag() {
StringRef Tag = Buffer->getBuffer().slice(Cursor, Cursor+4);
- if (Tag.empty() ||
+ if (Tag.empty() ||
Tag[0] != '\0' || Tag[1] != '\0' ||
Tag[2] != '\x41' || Tag[3] != '\x01') {
return false;
/// cursor and return true otherwise return false.
bool readEdgeTag() {
StringRef Tag = Buffer->getBuffer().slice(Cursor, Cursor+4);
- if (Tag.empty() ||
+ if (Tag.empty() ||
Tag[0] != '\0' || Tag[1] != '\0' ||
Tag[2] != '\x43' || Tag[3] != '\x01') {
return false;
/// cursor and return true otherwise return false.
bool readLineTag() {
StringRef Tag = Buffer->getBuffer().slice(Cursor, Cursor+4);
- if (Tag.empty() ||
+ if (Tag.empty() ||
Tag[0] != '\0' || Tag[1] != '\0' ||
Tag[2] != '\x45' || Tag[3] != '\x01') {
return false;
/// cursor and return true otherwise return false.
bool readArcTag() {
StringRef Tag = Buffer->getBuffer().slice(Cursor, Cursor+4);
- if (Tag.empty() ||
+ if (Tag.empty() ||
Tag[0] != '\0' || Tag[1] != '\0' ||
Tag[2] != '\xa1' || Tag[3] != '\1') {
return false;
}
bool readString(StringRef &Str) {
- uint32_t Len;
- if (!readInt(Len)) return false;
+ uint32_t Len = 0;
+ // Keep reading until we find a non-zero length. This emulates gcov's
+ // behaviour, which appears to do the same.
+ while (Len == 0)
+ if (!readInt(Len)) return false;
Len *= 4;
if (Buffer->getBuffer().size() < Cursor+Len) {
errs() << "Unexpected end of memory buffer: " << Cursor+Len << ".\n";
public:
GCOVFile() : GCNOInitialized(false), Checksum(0), Functions(), RunCount(0),
ProgramCount(0) {}
- ~GCOVFile();
bool readGCNO(GCOVBuffer &Buffer);
bool readGCDA(GCOVBuffer &Buffer);
uint32_t getChecksum() const { return Checksum; }
bool GCNOInitialized;
GCOV::GCOVVersion Version;
uint32_t Checksum;
- SmallVector<GCOVFunction *, 16> Functions;
+ SmallVector<std::unique_ptr<GCOVFunction>, 16> Functions;
uint32_t RunCount;
uint32_t ProgramCount;
};
+/// GCOVEdge - Collects edge information.
struct GCOVEdge {
- GCOVEdge(GCOVBlock *S, GCOVBlock *D): Src(S), Dst(D), Count(0) {}
+ GCOVEdge(GCOVBlock &S, GCOVBlock &D) : Src(S), Dst(D), Count(0) {}
- GCOVBlock *Src;
- GCOVBlock *Dst;
+ GCOVBlock &Src;
+ GCOVBlock &Dst;
uint64_t Count;
};
/// GCOVFunction - Collects function information.
class GCOVFunction {
public:
+ typedef SmallVectorImpl<std::unique_ptr<GCOVBlock>>::const_iterator
+ BlockIterator;
+
GCOVFunction(GCOVFile &P) : Parent(P), Ident(0), LineNumber(0) {}
- ~GCOVFunction();
bool readGCNO(GCOVBuffer &Buffer, GCOV::GCOVVersion Version);
bool readGCDA(GCOVBuffer &Buffer, GCOV::GCOVVersion Version);
+ StringRef getName() const { return Name; }
StringRef getFilename() const { return Filename; }
+ size_t getNumBlocks() const { return Blocks.size(); }
+ uint64_t getEntryCount() const;
+ uint64_t getExitCount() const;
+
+ BlockIterator block_begin() const { return Blocks.begin(); }
+ BlockIterator block_end() const { return Blocks.end(); }
+
void dump() const;
void collectLineCounts(FileInfo &FI);
private:
GCOVFile &Parent;
uint32_t Ident;
+ uint32_t Checksum;
uint32_t LineNumber;
StringRef Name;
StringRef Filename;
- SmallVector<GCOVBlock *, 16> Blocks;
- SmallVector<GCOVEdge *, 16> Edges;
+ SmallVector<std::unique_ptr<GCOVBlock>, 16> Blocks;
+ SmallVector<std::unique_ptr<GCOVEdge>, 16> Edges;
};
/// GCOVBlock - Collects block information.
class GCOVBlock {
+ struct EdgeWeight {
+ EdgeWeight(GCOVBlock *D): Dst(D), Count(0) {}
+
+ GCOVBlock *Dst;
+ uint64_t Count;
+ };
+
+ struct SortDstEdgesFunctor {
+ bool operator()(const GCOVEdge *E1, const GCOVEdge *E2) {
+ return E1->Dst.Number < E2->Dst.Number;
+ }
+ };
public:
typedef SmallVectorImpl<GCOVEdge *>::const_iterator EdgeIterator;
- GCOVBlock(GCOVFunction &P, uint32_t N) :
- Parent(P), Number(N), Counter(0), SrcEdges(), DstEdges(), Lines() {}
+ GCOVBlock(GCOVFunction &P, uint32_t N) : Parent(P), Number(N), Counter(0),
+ DstEdgesAreSorted(true), SrcEdges(), DstEdges(), Lines() {}
~GCOVBlock();
+ const GCOVFunction &getParent() const { return Parent; }
+ void addLine(uint32_t N) { Lines.push_back(N); }
+ uint32_t getLastLine() const { return Lines.back(); }
+ void addCount(size_t DstEdgeNo, uint64_t N);
+ uint64_t getCount() const { return Counter; }
+
void addSrcEdge(GCOVEdge *Edge) {
- assert(Edge->Dst == this); // up to caller to ensure edge is valid
+ assert(&Edge->Dst == this); // up to caller to ensure edge is valid
SrcEdges.push_back(Edge);
}
void addDstEdge(GCOVEdge *Edge) {
- assert(Edge->Src == this); // up to caller to ensure edge is valid
+ assert(&Edge->Src == this); // up to caller to ensure edge is valid
+ // Check if adding this edge causes list to become unsorted.
+ if (DstEdges.size() && DstEdges.back()->Dst.Number > Edge->Dst.Number)
+ DstEdgesAreSorted = false;
DstEdges.push_back(Edge);
}
- void addLine(uint32_t N) { Lines.push_back(N); }
- void addCount(size_t DstEdgeNo, uint64_t N);
- uint64_t getCount() const { return Counter; }
size_t getNumSrcEdges() const { return SrcEdges.size(); }
size_t getNumDstEdges() const { return DstEdges.size(); }
+ void sortDstEdges();
EdgeIterator src_begin() const { return SrcEdges.begin(); }
EdgeIterator src_end() const { return SrcEdges.end(); }
GCOVFunction &Parent;
uint32_t Number;
uint64_t Counter;
+ bool DstEdgesAreSorted;
SmallVector<GCOVEdge *, 16> SrcEdges;
SmallVector<GCOVEdge *, 16> DstEdges;
SmallVector<uint32_t, 16> Lines;
};
-typedef SmallVector<const GCOVBlock *, 4> BlockVector;
-typedef DenseMap<uint32_t, BlockVector> LineData;
class FileInfo {
+ // It is unlikely--but possible--for multiple functions to be on the same line.
+ // Therefore this typedef allows LineData.Functions to store multiple functions
+ // per instance. This is rare, however, so optimize for the common case.
+ typedef SmallVector<const GCOVFunction *, 1> FunctionVector;
+ typedef DenseMap<uint32_t, FunctionVector> FunctionLines;
+ typedef SmallVector<const GCOVBlock *, 4> BlockVector;
+ typedef DenseMap<uint32_t, BlockVector> BlockLines;
+
+ struct LineData {
+ LineData() : LastLine(0) {}
+ BlockLines Blocks;
+ FunctionLines Functions;
+ uint32_t LastLine;
+ };
+
+ struct GCOVCoverage {
+ GCOVCoverage(StringRef Name) :
+ Name(Name), LogicalLines(0), LinesExec(0), Branches(0), BranchesExec(0),
+ BranchesTaken(0) {}
+
+ StringRef Name;
+
+ uint32_t LogicalLines;
+ uint32_t LinesExec;
+
+ uint32_t Branches;
+ uint32_t BranchesExec;
+ uint32_t BranchesTaken;
+ };
public:
+ FileInfo(const GCOVOptions &Options) :
+ Options(Options), LineInfo(), RunCount(0), ProgramCount(0) {}
+
void addBlockLine(StringRef Filename, uint32_t Line, const GCOVBlock *Block) {
- LineInfo[Filename][Line-1].push_back(Block);
+ if (Line > LineInfo[Filename].LastLine)
+ LineInfo[Filename].LastLine = Line;
+ LineInfo[Filename].Blocks[Line-1].push_back(Block);
+ }
+ void addFunctionLine(StringRef Filename, uint32_t Line,
+ const GCOVFunction *Function) {
+ if (Line > LineInfo[Filename].LastLine)
+ LineInfo[Filename].LastLine = Line;
+ LineInfo[Filename].Functions[Line-1].push_back(Function);
}
void setRunCount(uint32_t Runs) { RunCount = Runs; }
void setProgramCount(uint32_t Programs) { ProgramCount = Programs; }
- void print(StringRef GCNOFile, StringRef GCDAFile) const;
+ void print(StringRef MainFilename, StringRef GCNOFile, StringRef GCDAFile);
+
private:
+ std::string getCoveragePath(StringRef Filename, StringRef MainFilename);
+ std::unique_ptr<raw_ostream> openCoveragePath(StringRef CoveragePath);
+ void printFunctionSummary(raw_ostream &OS,
+ const FunctionVector &Funcs) const;
+ void printBlockInfo(raw_ostream &OS, const GCOVBlock &Block,
+ uint32_t LineIndex, uint32_t &BlockNo) const;
+ void printBranchInfo(raw_ostream &OS, const GCOVBlock &Block,
+ GCOVCoverage &Coverage, uint32_t &EdgeNo);
+ void printUncondBranchInfo(raw_ostream &OS, uint32_t &EdgeNo,
+ uint64_t Count) const;
+
+ void printCoverage(const GCOVCoverage &Coverage) const;
+ void printFuncCoverage() const;
+ void printFileCoverage() const;
+
+ const GCOVOptions &Options;
StringMap<LineData> LineInfo;
uint32_t RunCount;
uint32_t ProgramCount;
+
+ typedef SmallVector<std::pair<std::string, GCOVCoverage>, 4>
+ FileCoverageList;
+ typedef MapVector<const GCOVFunction *, GCOVCoverage> FuncCoverageMap;
+
+ FileCoverageList FileCoverages;
+ FuncCoverageMap FuncCoverages;
};
}
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