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llvm-cov: Split up reading of GCNO and GCDA files.
There are now two functions: readGCNO() and readGCDA(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196173 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -210,7 +210,8 @@ class GCOVFunction {
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public:
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GCOVFunction() : Ident(0), LineNumber(0) {}
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~GCOVFunction();
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bool read(GCOVBuffer &Buffer, GCOV::GCOVFormat Format);
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bool readGCNO(GCOVBuffer &Buffer, GCOV::GCOVFormat Format);
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bool readGCDA(GCOVBuffer &Buffer, GCOV::GCOVFormat Format);
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StringRef getFilename() const { return Filename; }
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void dump() const;
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void collectLineCounts(FileInfo &FI);
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@ -50,7 +50,7 @@ bool GCOVFile::read(GCOVBuffer &Buffer) {
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while (true) {
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if (!Buffer.readFunctionTag()) break;
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GCOVFunction *GFun = new GCOVFunction();
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if (!GFun->read(Buffer, Format))
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if (!GFun->readGCNO(Buffer, Format))
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return false;
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Functions.push_back(GFun);
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}
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@ -66,7 +66,7 @@ bool GCOVFile::read(GCOVBuffer &Buffer) {
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errs() << "Unexpected number of functions.\n";
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return false;
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}
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if (!Functions[i]->read(Buffer, Format))
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if (!Functions[i]->readGCDA(Buffer, Format))
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return false;
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}
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if (Buffer.readObjectTag()) {
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@ -114,52 +114,18 @@ 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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/// 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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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::GCNO_402 && Format != GCOV::GCDA_402)
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if (Format != GCOV::GCNO_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 (Format == GCOV::GCNO_402 || Format == GCOV::GCNO_404)
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if (!Buff.readString(Filename)) return false;
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if (Format == GCOV::GCDA_402 || Format == GCOV::GCDA_404) {
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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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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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for (uint32_t Line = 0; Count > 0; ++Line) {
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if (Line >= Blocks.size()) {
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errs() << "Unexpected number of edges.\n";
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return false;
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}
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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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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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Block.addCount(ArcCount);
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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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if (!Buff.readString(Filename)) return false;
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if (!Buff.readInt(LineNumber)) return false;
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// read blocks.
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@ -226,6 +192,48 @@ bool GCOVFunction::read(GCOVBuffer &Buff, GCOV::GCOVFormat Format) {
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return true;
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}
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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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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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for (uint32_t Line = 0; Count > 0; ++Line) {
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if (Line >= Blocks.size()) {
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errs() << "Unexpected number of edges.\n";
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return false;
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}
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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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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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Block.addCount(ArcCount);
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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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/// dump - Dump GCOVFunction content to dbgs() for debugging purposes.
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void GCOVFunction::dump() const {
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dbgs() << "===== " << Name << " @ " << Filename << ":" << LineNumber << "\n";
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