From c2c50cdcdc19a1bca993c06d13d8cdca87083ce4 Mon Sep 17 00:00:00 2001 From: Chandler Carruth Date: Wed, 2 Jan 2013 09:10:48 +0000 Subject: Rename VMCore directory to IR. Aside from moving the actual files, this patch only updates the build system and the source file comments under lib/... that are relevant. I'll be updating other docs and other files in smaller subsequnet commits. While I've tried to test this, but it is entirely possible that there will still be some build system fallout. Also, note that I've not changed the library name itself: libLLVMCore.a is still the library name. I'd be interested in others' opinions about whether we should rename this as well (I think we should, just not sure what it might break) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171359 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/IR/GCOV.cpp | 283 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 283 insertions(+) create mode 100644 lib/IR/GCOV.cpp (limited to 'lib/IR/GCOV.cpp') diff --git a/lib/IR/GCOV.cpp b/lib/IR/GCOV.cpp new file mode 100644 index 0000000000..ea2f0a6d55 --- /dev/null +++ b/lib/IR/GCOV.cpp @@ -0,0 +1,283 @@ +//===- GCOVr.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. +// +//===----------------------------------------------------------------------===// +// +// GCOV implements the interface to read and write coverage files that use +// 'gcov' format. +// +//===----------------------------------------------------------------------===// + +#include "llvm/Support/GCOV.h" +#include "llvm/ADT/OwningPtr.h" +#include "llvm/ADT/STLExtras.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); +} + +/// isGCDAFile - Return true if Format identifies a .gcda file. +static bool isGCDAFile(GCOV::GCOVFormat Format) { + return Format == GCOV::GCDA_402 || Format == GCOV::GCDA_404; +} + +/// isGCNOFile - Return true if Format identifies a .gcno file. +static bool isGCNOFile(GCOV::GCOVFormat Format) { + return Format == GCOV::GCNO_402 || Format == GCOV::GCNO_404; +} + +/// read - Read GCOV buffer. +bool GCOVFile::read(GCOVBuffer &Buffer) { + GCOV::GCOVFormat Format = Buffer.readGCOVFormat(); + if (Format == GCOV::InvalidGCOV) + return false; + + unsigned i = 0; + while (1) { + GCOVFunction *GFun = NULL; + if (isGCDAFile(Format)) { + // Use existing function while reading .gcda file. + assert(i < Functions.size() && ".gcda data does not match .gcno data"); + GFun = Functions[i]; + } else if (isGCNOFile(Format)){ + GFun = new GCOVFunction(); + Functions.push_back(GFun); + } + if (!GFun || !GFun->read(Buffer, Format)) + break; + ++i; + } + return true; +} + +/// dump - Dump GCOVFile content on standard out for debugging purposes. +void GCOVFile::dump() { + for (SmallVector::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::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, GCOV::GCOVFormat Format) { + if (!Buff.readFunctionTag()) + return false; + + Buff.readInt(); // Function header length + Ident = Buff.readInt(); + Buff.readInt(); // Checksum #1 + if (Format != GCOV::GCNO_402) + Buff.readInt(); // Checksum #2 + + Name = Buff.readString(); + if (Format == GCOV::GCNO_402 || Format == GCOV::GCNO_404) + Filename = Buff.readString(); + + if (Format == GCOV::GCDA_402 || Format == GCOV::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. + bool BlockTagFound = Buff.readBlockTag(); + (void)BlockTagFound; + assert(BlockTagFound && "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::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::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::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::iterator I = Edges.begin(), E = Edges.end(); + I != E; ++I) + outs() << (*I) << ","; + outs() << "\n"; + } + if (!Lines.empty()) { + outs() << "\tLines : "; + for (StringMap::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::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::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 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::iterator I = LineInfo.begin(), E = LineInfo.end(); + I != E; ++I) { + StringRef Filename = I->first(); + outs() << Filename << "\n"; + LineCounts &L = LineInfo[Filename]; + OwningPtr 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 P = AllLines.split('\n'); + if (AllLines != P.first) + outs() << P.first; + outs() << "\n"; + AllLines = P.second; + } + } +} + + -- cgit v1.2.3