Introduce llvm-cov.
Add llvm-cov skeleton. It has initial support to read coverage info generated by GCOVProfiling.cpp.
Today, you can do
prompt> clang a.c -ftest-coverage -fprofile-arcs -o a
prompt> ./a
prompt> llvm-cov -gcno a.gcno -gcda a.gcda
a.c
: #include "a.h"
:
: int main() {
: int i = 0;
: if (i) {
1: int j = 0;
1: j = 1;
1: } else {
: int k = 1;
: k = 2;
: }
1: return 0;
: }
:
:
llvm-svn: 140712
diff --git a/llvm/tools/llvm-cov/GCOVReader.cpp b/llvm/tools/llvm-cov/GCOVReader.cpp
new file mode 100644
index 0000000..a8466cf
--- /dev/null
+++ b/llvm/tools/llvm-cov/GCOVReader.cpp
@@ -0,0 +1,276 @@
+//===- tools/llvm-cov/GCOVReader.cpp - LLVM coverage tool -----------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// GCOVReader implements the interface to read coverage files that use 'gcov'
+// format.
+//
+//
+//===----------------------------------------------------------------------===//
+
+#include "GCOVReader.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/Support/MemoryObject.h"
+#include "llvm/Support/system_error.h"
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+// GCOVFile implementation.
+
+/// ~GCOVFile - Delete GCOVFile and its content.
+GCOVFile::~GCOVFile() {
+ DeleteContainerPointers(Functions);
+}
+
+/// read - Read GCOV buffer.
+bool GCOVFile::read(GCOVBuffer &Buffer) {
+ Format = Buffer.readGCOVFormat();
+ if (Format == InvalidGCOV)
+ return false;
+
+ unsigned i = 0;
+ while(1) {
+ GCOVFunction *GFun = NULL;
+ if(Format == GCDA_402 || Format == GCDA_404) {
+ if (i < Functions.size())
+ GFun = Functions[i];
+ } else
+ GFun = new GCOVFunction();
+
+ if (GFun && GFun->read(Buffer, Format)) {
+ if(Format == GCNO_402 || Format == GCNO_404)
+ Functions.push_back(GFun);
+ }
+ else {
+ delete GFun;
+ break;
+ }
+ ++i;
+ }
+ return true;
+}
+
+/// dump - Dump GCOVFile content on standard out for debugging purposes.
+void GCOVFile::dump() {
+ for (SmallVector<GCOVFunction *, 16>::iterator I = Functions.begin(),
+ E = Functions.end(); I != E; ++I)
+ (*I)->dump();
+}
+
+/// collectLineCounts - Collect line counts. This must be used after
+/// reading .gcno and .gcda files.
+void GCOVFile::collectLineCounts(FileInfo &FI) {
+ for (SmallVector<GCOVFunction *, 16>::iterator I = Functions.begin(),
+ E = Functions.end(); I != E; ++I)
+ (*I)->collectLineCounts(FI);
+ FI.print();
+}
+
+//===----------------------------------------------------------------------===//
+// GCOVFunction implementation.
+
+/// ~GCOVFunction - Delete GCOVFunction and its content.
+GCOVFunction::~GCOVFunction() {
+ DeleteContainerPointers(Blocks);
+}
+
+/// read - Read a aunction from the buffer. Return false if buffer cursor
+/// does not point to a function tag.
+bool GCOVFunction::read(GCOVBuffer &Buff, GCOVFormat Format) {
+ if (!Buff.readFunctionTag())
+ return false;
+
+ Buff.readInt(); // Function header length
+ Ident = Buff.readInt();
+ Buff.readInt(); // Checksum #1
+ if (Format != GCNO_402)
+ Buff.readInt(); // Checksum #2
+
+ Name = Buff.readString();
+ if(Format == GCNO_402 || Format == GCNO_404)
+ Filename = Buff.readString();
+
+ if(Format == GCDA_402 || Format == GCDA_404) {
+ Buff.readArcTag();
+ uint32_t Count = Buff.readInt() / 2;
+ for (unsigned i = 0, e = Count; i != e; ++i) {
+ Blocks[i]->addCount(Buff.readInt64());
+ }
+ return true;;
+ }
+
+ LineNumber = Buff.readInt();
+
+ // read blocks.
+ assert (Buff.readBlockTag() && "Block Tag not found!");
+ uint32_t BlockCount = Buff.readInt();
+ for (int i = 0, e = BlockCount; i != e; ++i) {
+ Buff.readInt(); // Block flags;
+ Blocks.push_back(new GCOVBlock(i));
+ }
+
+ // read edges.
+ while (Buff.readEdgeTag()) {
+ uint32_t EdgeCount = (Buff.readInt() - 1) / 2;
+ uint32_t BlockNo = Buff.readInt();
+ assert (BlockNo < BlockCount && "Unexpected Block number!");
+ for (int i = 0, e = EdgeCount; i != e; ++i) {
+ Blocks[BlockNo]->addEdge(Buff.readInt());
+ Buff.readInt(); // Edge flag
+ }
+ }
+
+ // read line table.
+ while (Buff.readLineTag()) {
+ uint32_t LineTableLength = Buff.readInt();
+ uint32_t Size = Buff.getCursor() + LineTableLength*4;
+ uint32_t BlockNo = Buff.readInt();
+ assert (BlockNo < BlockCount && "Unexpected Block number!");
+ GCOVBlock *Block = Blocks[BlockNo];
+ Buff.readInt(); // flag
+ while (Buff.getCursor() != (Size - 4)) {
+ StringRef Filename = Buff.readString();
+ if (Buff.getCursor() == (Size - 4)) break;
+ while (uint32_t L = Buff.readInt())
+ Block->addLine(Filename, L);
+ }
+ Buff.readInt(); // flag
+ }
+ return true;
+}
+
+/// dump - Dump GCOVFunction content on standard out for debugging purposes.
+void GCOVFunction::dump() {
+ outs() << "===== " << Name << " @ " << Filename << ":" << LineNumber << "\n";
+ for (SmallVector<GCOVBlock *, 16>::iterator I = Blocks.begin(),
+ E = Blocks.end(); I != E; ++I)
+ (*I)->dump();
+}
+
+/// collectLineCounts - Collect line counts. This must be used after
+/// reading .gcno and .gcda files.
+void GCOVFunction::collectLineCounts(FileInfo &FI) {
+ for (SmallVector<GCOVBlock *, 16>::iterator I = Blocks.begin(),
+ E = Blocks.end(); I != E; ++I)
+ (*I)->collectLineCounts(FI);
+}
+
+//===----------------------------------------------------------------------===//
+// GCOVBlock implementation.
+
+/// ~GCOVBlock - Delete GCOVBlock and its content.
+GCOVBlock::~GCOVBlock() {
+ Edges.clear();
+ DeleteContainerSeconds(Lines);
+}
+
+void GCOVBlock::addLine(StringRef Filename, uint32_t LineNo) {
+ GCOVLines *&LinesForFile = Lines[Filename];
+ if (!LinesForFile)
+ LinesForFile = new GCOVLines();
+ LinesForFile->add(LineNo);
+}
+
+/// collectLineCounts - Collect line counts. This must be used after
+/// reading .gcno and .gcda files.
+void GCOVBlock::collectLineCounts(FileInfo &FI) {
+ for (StringMap<GCOVLines *>::iterator I = Lines.begin(),
+ E = Lines.end(); I != E; ++I)
+ I->second->collectLineCounts(FI, I->first(), Counter);
+}
+
+/// dump - Dump GCOVBlock content on standard out for debugging purposes.
+void GCOVBlock::dump() {
+ outs() << "Block : " << Number << " Counter : " << Counter << "\n";
+ if (!Edges.empty()) {
+ outs() << "\tEdges : ";
+ for (SmallVector<uint32_t, 16>::iterator I = Edges.begin(), E = Edges.end();
+ I != E; ++I)
+ outs() << (*I) << ",";
+ outs() << "\n";
+ }
+ if (!Lines.empty()) {
+ outs() << "\tLines : ";
+ for (StringMap<GCOVLines *>::iterator LI = Lines.begin(),
+ LE = Lines.end(); LI != LE; ++LI) {
+ outs() << LI->first() << " -> ";
+ LI->second->dump();
+ outs() << "\n";
+ }
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// GCOVLines implementation.
+
+/// collectLineCounts - Collect line counts. This must be used after
+/// reading .gcno and .gcda files.
+void GCOVLines::collectLineCounts(FileInfo &FI, StringRef Filename,
+ uint32_t Count) {
+ for (SmallVector<uint32_t, 16>::iterator I = Lines.begin(),
+ E = Lines.end(); I != E; ++I)
+ FI.addLineCount(Filename, *I, Count);
+}
+
+/// dump - Dump GCOVLines content on standard out for debugging purposes.
+void GCOVLines::dump() {
+ for (SmallVector<uint32_t, 16>::iterator I = Lines.begin(),
+ E = Lines.end(); I != E; ++I)
+ outs() << (*I) << ",";
+}
+
+//===----------------------------------------------------------------------===//
+// FileInfo implementation.
+
+/// addLineCount - Add line count for the given line number in a file.
+void FileInfo::addLineCount(StringRef Filename, uint32_t Line, uint32_t Count) {
+ if (LineInfo.find(Filename) == LineInfo.end()) {
+ OwningPtr<MemoryBuffer> Buff;
+ if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
+ errs() << Filename << ": " << ec.message() << "\n";
+ return;
+ }
+ StringRef AllLines = Buff.take()->getBuffer();
+ LineCounts L(AllLines.count('\n')+2);
+ L[Line-1] = Count;
+ LineInfo[Filename] = L;
+ return;
+ }
+ LineCounts &L = LineInfo[Filename];
+ L[Line-1] = Count;
+}
+
+/// print - Print source files with collected line count information.
+void FileInfo::print() {
+ for (StringMap<LineCounts>::iterator I = LineInfo.begin(), E = LineInfo.end();
+ I != E; ++I) {
+ StringRef Filename = I->first();
+ outs() << Filename << "\n";
+ LineCounts &L = LineInfo[Filename];
+ OwningPtr<MemoryBuffer> Buff;
+ if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
+ errs() << Filename << ": " << ec.message() << "\n";
+ return;
+ }
+ StringRef AllLines = Buff.take()->getBuffer();
+ for (unsigned i = 0, e = L.size(); i != e; ++i) {
+ if (L[i])
+ outs() << L[i] << ":\t";
+ else
+ outs() << " :\t";
+ std::pair<StringRef, StringRef> P = AllLines.split('\n');
+ if (AllLines != P.first)
+ outs() << P.first;
+ outs() << "\n";
+ AllLines = P.second;
+ }
+ }
+}
+
+