mirror of
https://github.com/c64scene-ar/llvm-6502.git
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f44533c65e
This reverts commit d8acf0078c.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194040 91177308-0d34-0410-b5e6-96231b3b80d8
301 lines
9.6 KiB
C++
301 lines
9.6 KiB
C++
//===- GCOVr.cpp - LLVM coverage tool -------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// GCOV implements the interface to read and write coverage files that use
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// 'gcov' format.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/GCOV.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/MemoryObject.h"
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#include "llvm/Support/system_error.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// GCOVFile implementation.
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/// ~GCOVFile - Delete GCOVFile and its content.
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GCOVFile::~GCOVFile() {
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DeleteContainerPointers(Functions);
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}
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/// isGCDAFile - Return true if Format identifies a .gcda file.
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static bool isGCDAFile(GCOV::GCOVFormat Format) {
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return Format == GCOV::GCDA_402 || Format == GCOV::GCDA_404;
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}
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/// isGCNOFile - Return true if Format identifies a .gcno file.
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static bool isGCNOFile(GCOV::GCOVFormat Format) {
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return Format == GCOV::GCNO_402 || Format == GCOV::GCNO_404;
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}
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/// read - Read GCOV buffer.
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bool GCOVFile::read(GCOVBuffer &Buffer) {
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GCOV::GCOVFormat Format = Buffer.readGCOVFormat();
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if (Format == GCOV::InvalidGCOV)
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return false;
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if (isGCNOFile(Format)) {
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while (true) {
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GCOVFunction *GFun = new GCOVFunction();
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if (!GFun->read(Buffer, Format))
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break;
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Functions.push_back(GFun);
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}
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}
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else if (isGCDAFile(Format)) {
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for (size_t i = 0, e = Functions.size(); i < e; ++i) {
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bool ReadGCDA = Functions[i]->read(Buffer, Format);
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(void)ReadGCDA;
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assert(ReadGCDA && ".gcda data does not match .gcno data");
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}
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if (Buffer.readObjectTag()) {
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uint32_t Length = Buffer.readInt();
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Buffer.readInt(); // checksum
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Buffer.readInt(); // num
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RunCount = Buffer.readInt();
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Buffer.advanceCursor(Length-3);
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}
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while (Buffer.readProgramTag()) {
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uint32_t Length = Buffer.readInt();
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Buffer.advanceCursor(Length);
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++ProgramCount;
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}
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}
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return true;
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}
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/// dump - Dump GCOVFile content to dbgs() for debugging purposes.
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void GCOVFile::dump() {
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for (SmallVectorImpl<GCOVFunction *>::iterator I = Functions.begin(),
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E = Functions.end(); I != E; ++I)
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(*I)->dump();
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}
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/// collectLineCounts - Collect line counts. This must be used after
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/// reading .gcno and .gcda files.
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void GCOVFile::collectLineCounts(FileInfo &FI) {
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for (SmallVectorImpl<GCOVFunction *>::iterator I = Functions.begin(),
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E = Functions.end(); I != E; ++I)
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(*I)->collectLineCounts(FI);
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FI.setRunCount(RunCount);
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FI.setProgramCount(ProgramCount);
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}
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//===----------------------------------------------------------------------===//
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// GCOVFunction implementation.
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/// ~GCOVFunction - Delete GCOVFunction and its content.
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GCOVFunction::~GCOVFunction() {
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DeleteContainerPointers(Blocks);
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}
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/// read - Read a function from the buffer. Return false if buffer cursor
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/// does not point to a function tag.
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bool GCOVFunction::read(GCOVBuffer &Buff, GCOV::GCOVFormat Format) {
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if (!Buff.readFunctionTag())
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return false;
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Buff.readInt(); // Function header length
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Ident = Buff.readInt();
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Buff.readInt(); // Checksum #1
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if (Format != GCOV::GCNO_402 && Format != GCOV::GCDA_402)
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Buff.readInt(); // Checksum #2
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Name = Buff.readString();
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if (Format == GCOV::GCNO_402 || Format == GCOV::GCNO_404)
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Filename = Buff.readString();
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if (Format == GCOV::GCDA_402 || Format == GCOV::GCDA_404) {
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Buff.readArcTag();
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uint32_t i = 0;
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uint32_t Count = Buff.readInt() / 2;
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// This for loop adds the counts for each block. A second nested loop is
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// required to combine the edge counts that are contained in the GCDA file.
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for (uint32_t Line = 0; i < Count; ++Line) {
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GCOVBlock &Block = *Blocks[Line];
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for (size_t Edge = 0, End = Block.getNumEdges(); Edge < End; ++Edge) {
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assert(i < Count && "Unexpected number of Edges!");
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Block.addCount(Buff.readInt64());
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++i;
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}
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}
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return true;
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}
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LineNumber = Buff.readInt();
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// read blocks.
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bool BlockTagFound = Buff.readBlockTag();
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(void)BlockTagFound;
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assert(BlockTagFound && "Block Tag not found!");
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uint32_t BlockCount = Buff.readInt();
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for (uint32_t i = 0, e = BlockCount; i != e; ++i) {
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Buff.readInt(); // Block flags;
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Blocks.push_back(new GCOVBlock(i));
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}
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// read edges.
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while (Buff.readEdgeTag()) {
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uint32_t EdgeCount = (Buff.readInt() - 1) / 2;
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uint32_t BlockNo = Buff.readInt();
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assert(BlockNo < BlockCount && "Unexpected Block number!");
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for (uint32_t i = 0, e = EdgeCount; i != e; ++i) {
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Blocks[BlockNo]->addEdge(Buff.readInt());
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Buff.readInt(); // Edge flag
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}
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}
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// read line table.
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while (Buff.readLineTag()) {
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uint32_t LineTableLength = Buff.readInt();
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uint32_t EndPos = Buff.getCursor() + LineTableLength*4;
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uint32_t BlockNo = Buff.readInt();
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assert(BlockNo < BlockCount && "Unexpected Block number!");
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GCOVBlock *Block = Blocks[BlockNo];
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Buff.readInt(); // flag
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while (Buff.getCursor() != (EndPos - 4)) {
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StringRef Filename = Buff.readString();
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if (Buff.getCursor() == (EndPos - 4)) break;
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while (uint32_t L = Buff.readInt())
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Block->addLine(Filename, L);
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}
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Buff.readInt(); // flag
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}
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return true;
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}
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/// dump - Dump GCOVFunction content to dbgs() for debugging purposes.
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void GCOVFunction::dump() {
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dbgs() << "===== " << Name << " @ " << Filename << ":" << LineNumber << "\n";
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for (SmallVectorImpl<GCOVBlock *>::iterator I = Blocks.begin(),
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E = Blocks.end(); I != E; ++I)
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(*I)->dump();
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}
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/// collectLineCounts - Collect line counts. This must be used after
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/// reading .gcno and .gcda files.
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void GCOVFunction::collectLineCounts(FileInfo &FI) {
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for (SmallVectorImpl<GCOVBlock *>::iterator I = Blocks.begin(),
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E = Blocks.end(); I != E; ++I)
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(*I)->collectLineCounts(FI);
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}
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//===----------------------------------------------------------------------===//
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// GCOVBlock implementation.
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/// ~GCOVBlock - Delete GCOVBlock and its content.
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GCOVBlock::~GCOVBlock() {
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Edges.clear();
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DeleteContainerSeconds(Lines);
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}
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void GCOVBlock::addLine(StringRef Filename, uint32_t LineNo) {
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GCOVLines *&LinesForFile = Lines[Filename];
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if (!LinesForFile)
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LinesForFile = new GCOVLines();
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LinesForFile->add(LineNo);
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}
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/// collectLineCounts - Collect line counts. This must be used after
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/// reading .gcno and .gcda files.
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void GCOVBlock::collectLineCounts(FileInfo &FI) {
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for (StringMap<GCOVLines *>::iterator I = Lines.begin(),
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E = Lines.end(); I != E; ++I)
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I->second->collectLineCounts(FI, I->first(), Counter);
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}
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/// dump - Dump GCOVBlock content to dbgs() for debugging purposes.
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void GCOVBlock::dump() {
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dbgs() << "Block : " << Number << " Counter : " << Counter << "\n";
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if (!Edges.empty()) {
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dbgs() << "\tEdges : ";
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for (SmallVectorImpl<uint32_t>::iterator I = Edges.begin(), E = Edges.end();
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I != E; ++I)
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dbgs() << (*I) << ",";
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dbgs() << "\n";
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}
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if (!Lines.empty()) {
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dbgs() << "\tLines : ";
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for (StringMap<GCOVLines *>::iterator LI = Lines.begin(),
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LE = Lines.end(); LI != LE; ++LI) {
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dbgs() << LI->first() << " -> ";
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LI->second->dump();
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dbgs() << "\n";
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}
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}
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}
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//===----------------------------------------------------------------------===//
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// GCOVLines implementation.
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/// collectLineCounts - Collect line counts. This must be used after
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/// reading .gcno and .gcda files.
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void GCOVLines::collectLineCounts(FileInfo &FI, StringRef Filename,
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uint64_t Count) {
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for (SmallVectorImpl<uint32_t>::iterator I = Lines.begin(),
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E = Lines.end(); I != E; ++I)
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FI.addLineCount(Filename, *I, Count);
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}
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/// dump - Dump GCOVLines content to dbgs() for debugging purposes.
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void GCOVLines::dump() {
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for (SmallVectorImpl<uint32_t>::iterator I = Lines.begin(),
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E = Lines.end(); I != E; ++I)
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dbgs() << (*I) << ",";
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}
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//===----------------------------------------------------------------------===//
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// FileInfo implementation.
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/// print - Print source files with collected line count information.
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void FileInfo::print(raw_fd_ostream &OS, StringRef gcnoFile,
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StringRef gcdaFile) {
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for (StringMap<LineCounts>::iterator I = LineInfo.begin(), E = LineInfo.end();
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I != E; ++I) {
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StringRef Filename = I->first();
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OS << " -: 0:Source:" << Filename << "\n";
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OS << " -: 0:Graph:" << gcnoFile << "\n";
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OS << " -: 0:Data:" << gcdaFile << "\n";
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OS << " -: 0:Runs:" << RunCount << "\n";
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OS << " -: 0:Programs:" << ProgramCount << "\n";
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LineCounts &L = LineInfo[Filename];
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OwningPtr<MemoryBuffer> Buff;
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if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
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errs() << Filename << ": " << ec.message() << "\n";
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return;
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}
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StringRef AllLines = Buff.take()->getBuffer();
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uint32_t i = 0;
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while (!AllLines.empty()) {
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if (L.find(i) != L.end()) {
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if (L[i] == 0)
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OS << " #####:";
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else
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OS << format("%9lu:", L[i]);
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} else {
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OS << " -:";
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}
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std::pair<StringRef, StringRef> P = AllLines.split('\n');
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if (AllLines != P.first)
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OS << format("%5u:", i+1) << P.first;
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OS << "\n";
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AllLines = P.second;
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++i;
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}
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}
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}
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