2011-10-04 17:24:48 +00:00
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//===- GCOVr.cpp - LLVM coverage tool -------------------------------------===//
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2011-09-28 18:50:00 +00:00
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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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2013-11-14 11:44:58 +00:00
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// GCOV implements the interface to read and write coverage files that use
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2011-10-04 17:24:48 +00:00
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// 'gcov' format.
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2011-09-28 18:50:00 +00:00
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//
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//===----------------------------------------------------------------------===//
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2013-10-25 02:22:24 +00:00
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#include "llvm/Support/Debug.h"
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2011-10-04 17:24:48 +00:00
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#include "llvm/Support/GCOV.h"
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2011-09-28 18:50:00 +00:00
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#include "llvm/ADT/OwningPtr.h"
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2011-09-29 16:46:47 +00:00
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#include "llvm/ADT/STLExtras.h"
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2013-10-22 05:09:41 +00:00
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#include "llvm/Support/Format.h"
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2011-09-28 18:50:00 +00:00
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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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2011-09-29 17:06:40 +00:00
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/// isGCDAFile - Return true if Format identifies a .gcda file.
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2012-08-31 17:31:28 +00:00
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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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2011-09-29 17:06:40 +00:00
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}
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/// isGCNOFile - Return true if Format identifies a .gcno file.
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2012-08-31 17:31:28 +00:00
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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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2011-09-29 17:06:40 +00:00
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}
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2011-09-28 18:50:00 +00:00
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/// read - Read GCOV buffer.
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bool GCOVFile::read(GCOVBuffer &Buffer) {
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2012-08-31 17:31:28 +00:00
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GCOV::GCOVFormat Format = Buffer.readGCOVFormat();
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if (Format == GCOV::InvalidGCOV)
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2011-09-28 18:50:00 +00:00
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return false;
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2013-10-25 02:22:21 +00:00
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if (isGCNOFile(Format)) {
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2013-11-20 04:15:05 +00:00
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if (!Buffer.readInt(Checksum)) return false;
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2013-10-25 02:22:21 +00:00
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while (true) {
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2013-11-14 00:07:15 +00:00
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if (!Buffer.readFunctionTag()) break;
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2013-10-25 02:22:21 +00:00
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GCOVFunction *GFun = new GCOVFunction();
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2013-12-03 00:15:49 +00:00
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if (!GFun->readGCNO(Buffer, Format))
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2013-11-14 00:07:15 +00:00
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return false;
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2011-09-29 17:06:40 +00:00
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Functions.push_back(GFun);
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2011-09-28 18:50:00 +00:00
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}
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2013-11-21 04:12:10 +00:00
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} else if (isGCDAFile(Format)) {
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2013-11-20 04:15:05 +00:00
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uint32_t Checksum2;
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if (!Buffer.readInt(Checksum2)) return false;
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if (Checksum != Checksum2) {
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errs() << "File checksum does not match.\n";
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return false;
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}
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2013-10-25 02:22:21 +00:00
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for (size_t i = 0, e = Functions.size(); i < e; ++i) {
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2013-11-14 00:07:15 +00:00
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if (!Buffer.readFunctionTag()) {
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errs() << "Unexpected number of functions.\n";
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return false;
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}
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2013-12-03 00:15:49 +00:00
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if (!Functions[i]->readGCDA(Buffer, Format))
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2013-11-14 00:07:15 +00:00
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return false;
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2013-10-25 02:22:21 +00:00
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}
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2013-11-05 01:11:58 +00:00
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if (Buffer.readObjectTag()) {
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2013-11-14 00:07:15 +00:00
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uint32_t Length;
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uint32_t Dummy;
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if (!Buffer.readInt(Length)) return false;
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if (!Buffer.readInt(Dummy)) return false; // checksum
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if (!Buffer.readInt(Dummy)) return false; // num
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if (!Buffer.readInt(RunCount)) return false;;
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2013-11-05 01:11:58 +00:00
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Buffer.advanceCursor(Length-3);
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}
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while (Buffer.readProgramTag()) {
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2013-11-14 00:07:15 +00:00
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uint32_t Length;
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if (!Buffer.readInt(Length)) return false;
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2013-11-05 01:11:58 +00:00
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Buffer.advanceCursor(Length);
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2013-10-25 02:22:21 +00:00
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++ProgramCount;
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2013-11-05 01:11:58 +00:00
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}
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2013-10-25 02:22:21 +00:00
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}
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2011-09-28 18:50:00 +00:00
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return true;
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}
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2013-10-25 02:22:24 +00:00
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/// dump - Dump GCOVFile content to dbgs() for debugging purposes.
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2013-11-19 20:33:32 +00:00
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void GCOVFile::dump() const {
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for (SmallVectorImpl<GCOVFunction *>::const_iterator I = Functions.begin(),
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2012-07-19 00:11:40 +00:00
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E = Functions.end(); I != E; ++I)
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2011-09-28 18:50:00 +00:00
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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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2013-07-04 01:31:24 +00:00
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for (SmallVectorImpl<GCOVFunction *>::iterator I = Functions.begin(),
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2013-11-14 11:44:58 +00:00
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E = Functions.end(); I != E; ++I)
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2011-09-28 18:50:00 +00:00
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(*I)->collectLineCounts(FI);
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2013-11-05 01:11:58 +00:00
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FI.setRunCount(RunCount);
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2013-10-25 02:22:21 +00:00
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FI.setProgramCount(ProgramCount);
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2011-09-28 18:50:00 +00:00
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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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2013-12-03 00:24:44 +00:00
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DeleteContainerPointers(Edges);
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2011-09-28 18:50:00 +00:00
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}
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2013-12-03 00:15:49 +00:00
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/// readGCNO - Read a function from the GCNO buffer. Return false if an error
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/// occurs.
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bool GCOVFunction::readGCNO(GCOVBuffer &Buff, GCOV::GCOVFormat Format) {
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2013-11-14 00:07:15 +00:00
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uint32_t Dummy;
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if (!Buff.readInt(Dummy)) return false; // Function header length
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if (!Buff.readInt(Ident)) return false;
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if (!Buff.readInt(Dummy)) return false; // Checksum #1
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2013-12-03 00:15:49 +00:00
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if (Format != GCOV::GCNO_402)
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2013-11-14 00:07:15 +00:00
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if (!Buff.readInt(Dummy)) return false; // Checksum #2
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if (!Buff.readString(Name)) return false;
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2013-12-03 00:15:49 +00:00
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if (!Buff.readString(Filename)) return false;
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2013-11-14 00:07:15 +00:00
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if (!Buff.readInt(LineNumber)) return false;
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2011-09-28 18:50:00 +00:00
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// read blocks.
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2013-11-14 00:07:15 +00:00
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if (!Buff.readBlockTag()) {
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errs() << "Block tag not found.\n";
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return false;
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}
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uint32_t BlockCount;
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if (!Buff.readInt(BlockCount)) return false;
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2013-10-22 20:02:36 +00:00
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for (uint32_t i = 0, e = BlockCount; i != e; ++i) {
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2013-11-14 00:07:15 +00:00
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if (!Buff.readInt(Dummy)) return false; // Block flags;
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2013-11-14 00:32:00 +00:00
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Blocks.push_back(new GCOVBlock(*this, i));
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2011-09-28 18:50:00 +00:00
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}
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// read edges.
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while (Buff.readEdgeTag()) {
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2013-11-14 00:07:15 +00:00
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uint32_t EdgeCount;
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if (!Buff.readInt(EdgeCount)) return false;
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EdgeCount = (EdgeCount - 1) / 2;
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uint32_t BlockNo;
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if (!Buff.readInt(BlockNo)) return false;
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if (BlockNo >= BlockCount) {
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errs() << "Unexpected block number.\n";
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return false;
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}
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2013-10-22 20:02:36 +00:00
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for (uint32_t i = 0, e = EdgeCount; i != e; ++i) {
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2013-11-14 00:07:15 +00:00
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uint32_t Dst;
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if (!Buff.readInt(Dst)) return false;
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2013-12-03 00:24:44 +00:00
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GCOVEdge *Edge = new GCOVEdge(Blocks[BlockNo], Blocks[Dst]);
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Edges.push_back(Edge);
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Blocks[BlockNo]->addDstEdge(Edge);
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Blocks[Dst]->addSrcEdge(Edge);
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2013-11-14 00:07:15 +00:00
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if (!Buff.readInt(Dummy)) return false; // Edge flag
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2011-09-28 18:50:00 +00:00
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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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2013-11-14 00:07:15 +00:00
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uint32_t LineTableLength;
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if (!Buff.readInt(LineTableLength)) return false;
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2013-10-22 19:54:32 +00:00
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uint32_t EndPos = Buff.getCursor() + LineTableLength*4;
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2013-11-14 00:07:15 +00:00
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uint32_t BlockNo;
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if (!Buff.readInt(BlockNo)) return false;
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if (BlockNo >= BlockCount) {
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errs() << "Unexpected block number.\n";
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return false;
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}
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2011-09-28 18:50:00 +00:00
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GCOVBlock *Block = Blocks[BlockNo];
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2013-11-14 00:07:15 +00:00
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if (!Buff.readInt(Dummy)) return false; // flag
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2013-10-22 19:54:32 +00:00
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while (Buff.getCursor() != (EndPos - 4)) {
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2013-11-14 00:32:00 +00:00
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StringRef F;
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if (!Buff.readString(F)) return false;
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if (F != Filename) {
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errs() << "Multiple sources for a single basic block.\n";
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return false;
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}
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2013-10-22 19:54:32 +00:00
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if (Buff.getCursor() == (EndPos - 4)) break;
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2013-11-14 00:07:15 +00:00
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while (true) {
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uint32_t Line;
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if (!Buff.readInt(Line)) return false;
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if (!Line) break;
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2013-11-14 00:32:00 +00:00
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Block->addLine(Line);
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2013-11-14 00:07:15 +00:00
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}
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2011-09-28 18:50:00 +00:00
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}
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2013-11-14 00:07:15 +00:00
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if (!Buff.readInt(Dummy)) return false; // flag
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2011-09-28 18:50:00 +00:00
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}
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return true;
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}
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2013-12-03 00:15:49 +00:00
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/// readGCDA - Read a function from the GCDA buffer. Return false if an error
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/// occurs.
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bool GCOVFunction::readGCDA(GCOVBuffer &Buff, GCOV::GCOVFormat Format) {
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uint32_t Dummy;
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if (!Buff.readInt(Dummy)) return false; // Function header length
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if (!Buff.readInt(Ident)) return false;
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if (!Buff.readInt(Dummy)) return false; // Checksum #1
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if (Format != GCOV::GCDA_402)
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if (!Buff.readInt(Dummy)) return false; // Checksum #2
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if (!Buff.readString(Name)) return false;
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if (!Buff.readArcTag()) {
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errs() << "Arc tag not found.\n";
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return false;
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}
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2013-12-03 00:24:44 +00:00
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2013-12-03 00:15:49 +00:00
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uint32_t Count;
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if (!Buff.readInt(Count)) return false;
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Count /= 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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2013-12-03 00:24:44 +00:00
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for (uint32_t BlockNo = 0; Count > 0; ++BlockNo) {
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// The last block is always reserved for exit block
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if (BlockNo >= Blocks.size()-1) {
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2013-12-03 00:15:49 +00:00
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errs() << "Unexpected number of edges.\n";
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return false;
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}
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2013-12-03 00:24:44 +00:00
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GCOVBlock &Block = *Blocks[BlockNo];
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for (size_t EdgeNo = 0, End = Block.getNumDstEdges(); EdgeNo < End;
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++EdgeNo) {
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2013-12-03 00:15:49 +00:00
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if (Count == 0) {
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errs() << "Unexpected number of edges.\n";
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return false;
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}
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uint64_t ArcCount;
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if (!Buff.readInt64(ArcCount)) return false;
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2013-12-03 00:24:44 +00:00
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Block.addCount(EdgeNo, ArcCount);
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2013-12-03 00:15:49 +00:00
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--Count;
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}
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}
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return true;
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}
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2013-10-25 02:22:24 +00:00
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/// dump - Dump GCOVFunction content to dbgs() for debugging purposes.
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2013-11-19 20:33:32 +00:00
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void GCOVFunction::dump() const {
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2013-10-25 02:22:24 +00:00
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dbgs() << "===== " << Name << " @ " << Filename << ":" << LineNumber << "\n";
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2013-11-19 20:33:32 +00:00
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for (SmallVectorImpl<GCOVBlock *>::const_iterator I = Blocks.begin(),
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2012-07-19 00:11:40 +00:00
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E = Blocks.end(); I != E; ++I)
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2011-09-28 18:50:00 +00:00
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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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2013-07-04 01:31:24 +00:00
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for (SmallVectorImpl<GCOVBlock *>::iterator I = Blocks.begin(),
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2012-07-19 00:11:40 +00:00
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E = Blocks.end(); I != E; ++I)
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2011-09-28 18:50:00 +00:00
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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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2013-12-03 00:24:44 +00:00
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SrcEdges.clear();
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DstEdges.clear();
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2013-11-14 00:32:00 +00:00
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Lines.clear();
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2011-09-28 18:50:00 +00:00
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}
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2013-12-03 00:24:44 +00:00
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/// addCount - Add to block counter while storing the edge count. If the
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/// destination has no outgoing edges, also update that block's count too.
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void GCOVBlock::addCount(size_t DstEdgeNo, uint64_t N) {
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assert(DstEdgeNo < DstEdges.size()); // up to caller to ensure EdgeNo is valid
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DstEdges[DstEdgeNo]->Count = N;
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Counter += N;
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if (!DstEdges[DstEdgeNo]->Dst->getNumDstEdges())
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DstEdges[DstEdgeNo]->Dst->Counter += N;
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}
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2011-09-28 18:50:00 +00:00
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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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2013-11-14 00:32:00 +00:00
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for (SmallVectorImpl<uint32_t>::iterator I = Lines.begin(),
|
2012-07-19 00:11:40 +00:00
|
|
|
E = Lines.end(); I != E; ++I)
|
2013-12-03 00:38:21 +00:00
|
|
|
FI.addBlockLine(Parent.getFilename(), *I, this);
|
2011-09-28 18:50:00 +00:00
|
|
|
}
|
|
|
|
|
2013-10-25 02:22:24 +00:00
|
|
|
/// dump - Dump GCOVBlock content to dbgs() for debugging purposes.
|
2013-11-19 20:33:32 +00:00
|
|
|
void GCOVBlock::dump() const {
|
2013-10-25 02:22:24 +00:00
|
|
|
dbgs() << "Block : " << Number << " Counter : " << Counter << "\n";
|
2013-12-03 00:24:44 +00:00
|
|
|
if (!SrcEdges.empty()) {
|
|
|
|
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() << "\n";
|
|
|
|
}
|
|
|
|
if (!DstEdges.empty()) {
|
|
|
|
dbgs() << "\tDestination Edges : ";
|
|
|
|
for (EdgeIterator I = DstEdges.begin(), E = DstEdges.end(); I != E; ++I) {
|
|
|
|
const GCOVEdge *Edge = *I;
|
|
|
|
dbgs() << Edge->Dst->Number << " (" << Edge->Count << "), ";
|
|
|
|
}
|
2013-10-25 02:22:24 +00:00
|
|
|
dbgs() << "\n";
|
2011-09-28 18:50:00 +00:00
|
|
|
}
|
|
|
|
if (!Lines.empty()) {
|
2013-10-25 02:22:24 +00:00
|
|
|
dbgs() << "\tLines : ";
|
2013-11-19 20:33:32 +00:00
|
|
|
for (SmallVectorImpl<uint32_t>::const_iterator I = Lines.begin(),
|
2013-11-14 00:32:00 +00:00
|
|
|
E = Lines.end(); I != E; ++I)
|
|
|
|
dbgs() << (*I) << ",";
|
|
|
|
dbgs() << "\n";
|
2011-09-28 18:50:00 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// FileInfo implementation.
|
|
|
|
|
|
|
|
/// print - Print source files with collected line count information.
|
2013-11-02 00:09:17 +00:00
|
|
|
void FileInfo::print(raw_fd_ostream &OS, StringRef gcnoFile,
|
2013-11-19 20:33:32 +00:00
|
|
|
StringRef gcdaFile) const {
|
2013-12-03 00:38:21 +00:00
|
|
|
for (StringMap<LineData>::const_iterator I = LineInfo.begin(),
|
2013-11-19 20:33:32 +00:00
|
|
|
E = LineInfo.end(); I != E; ++I) {
|
2011-09-28 18:50:00 +00:00
|
|
|
StringRef Filename = I->first();
|
2013-11-05 01:56:29 +00:00
|
|
|
OwningPtr<MemoryBuffer> Buff;
|
|
|
|
if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
|
|
|
|
errs() << Filename << ": " << ec.message() << "\n";
|
|
|
|
return;
|
|
|
|
}
|
2013-11-15 09:44:17 +00:00
|
|
|
StringRef AllLines = Buff->getBuffer();
|
2013-11-19 20:57:20 +00:00
|
|
|
|
|
|
|
OS << " -: 0:Source:" << Filename << "\n";
|
|
|
|
OS << " -: 0:Graph:" << gcnoFile << "\n";
|
|
|
|
OS << " -: 0:Data:" << gcdaFile << "\n";
|
|
|
|
OS << " -: 0:Runs:" << RunCount << "\n";
|
|
|
|
OS << " -: 0:Programs:" << ProgramCount << "\n";
|
|
|
|
|
2013-12-03 00:38:21 +00:00
|
|
|
const LineData &L = I->second;
|
2013-10-23 19:45:03 +00:00
|
|
|
uint32_t i = 0;
|
|
|
|
while (!AllLines.empty()) {
|
2013-12-03 00:38:21 +00:00
|
|
|
LineData::const_iterator BlocksIt = L.find(i);
|
|
|
|
if (BlocksIt != L.end()) {
|
|
|
|
const BlockVector &Blocks = BlocksIt->second;
|
|
|
|
uint64_t LineCount = 0;
|
|
|
|
for (BlockVector::const_iterator I = Blocks.begin(), E = Blocks.end();
|
|
|
|
I != E; ++I) {
|
|
|
|
LineCount += (*I)->getCount();
|
|
|
|
}
|
|
|
|
if (LineCount == 0)
|
2013-11-02 00:09:17 +00:00
|
|
|
OS << " #####:";
|
2013-10-23 19:45:03 +00:00
|
|
|
else
|
2013-12-03 00:38:21 +00:00
|
|
|
OS << format("%9" PRIu64 ":", LineCount);
|
2013-10-23 19:45:03 +00:00
|
|
|
} else {
|
2013-11-02 00:09:17 +00:00
|
|
|
OS << " -:";
|
2013-10-23 19:45:03 +00:00
|
|
|
}
|
2011-09-28 18:50:00 +00:00
|
|
|
std::pair<StringRef, StringRef> P = AllLines.split('\n');
|
|
|
|
if (AllLines != P.first)
|
2013-11-02 00:09:17 +00:00
|
|
|
OS << format("%5u:", i+1) << P.first;
|
|
|
|
OS << "\n";
|
2011-09-28 18:50:00 +00:00
|
|
|
AllLines = P.second;
|
2013-10-23 19:45:03 +00:00
|
|
|
++i;
|
2011-09-28 18:50:00 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|