// should not begin with a number.
SmallVector<StringRef, 4> Matches;
if (!HeadRE.match(*LineIt, &Matches)) {
- reportParseError(LineIt.line_number(),
- "Expected 'mangled_name:NUM:NUM', found " + *LineIt);
+ reportError(LineIt.line_number(),
+ "Expected 'mangled_name:NUM:NUM', found " + *LineIt);
return sampleprof_error::malformed;
}
assert(Matches.size() == 4);
// EOF or when we see the start of the next function.
while (!LineIt.is_at_eof() && isdigit((*LineIt)[0])) {
if (!LineSampleRE.match(*LineIt, &Matches)) {
- reportParseError(
- LineIt.line_number(),
- "Expected 'NUM[.NUM]: NUM[ mangled_name:NUM]*', found " + *LineIt);
+ reportError(LineIt.line_number(),
+ "Expected 'NUM[.NUM]: NUM[ mangled_name:NUM]*', found " +
+ *LineIt);
return sampleprof_error::malformed;
}
assert(Matches.size() == 5);
while (CallsLine != "") {
SmallVector<StringRef, 3> CallSample;
if (!CallSampleRE.match(CallsLine, &CallSample)) {
- reportParseError(LineIt.line_number(),
- "Expected 'mangled_name:NUM', found " + CallsLine);
+ reportError(LineIt.line_number(),
+ "Expected 'mangled_name:NUM', found " + CallsLine);
return sampleprof_error::malformed;
}
StringRef CalledFunction = CallSample[1];
EC = sampleprof_error::success;
if (EC) {
- reportParseError(0, EC.message());
+ reportError(0, EC.message());
return EC;
}
StringRef Str(reinterpret_cast<const char *>(Data));
if (Data + Str.size() + 1 > End) {
EC = sampleprof_error::truncated;
- reportParseError(0, EC.message());
+ reportError(0, EC.message());
return EC;
}
return Magic == SPMagic();
}
+bool SourceInfo::operator<(const SourceInfo &P) const {
+ if (Line != P.Line)
+ return Line < P.Line;
+ if (StartLine != P.StartLine)
+ return StartLine < P.StartLine;
+ if (Discriminator != P.Discriminator)
+ return Discriminator < P.Discriminator;
+ return FuncName < P.FuncName;
+}
+
+std::error_code SampleProfileReaderGCC::skipNextWord() {
+ uint32_t dummy;
+ if (!GcovBuffer.readInt(dummy))
+ return sampleprof_error::truncated;
+ return sampleprof_error::success;
+}
+
+template <typename T> ErrorOr<T> SampleProfileReaderGCC::readNumber() {
+ if (sizeof(T) <= sizeof(uint32_t)) {
+ uint32_t Val;
+ if (GcovBuffer.readInt(Val) && Val <= std::numeric_limits<T>::max())
+ return static_cast<T>(Val);
+ } else if (sizeof(T) <= sizeof(uint64_t)) {
+ uint64_t Val;
+ if (GcovBuffer.readInt64(Val) && Val <= std::numeric_limits<T>::max())
+ return static_cast<T>(Val);
+ }
+
+ std::error_code EC = sampleprof_error::malformed;
+ reportError(0, EC.message());
+ return EC;
+}
+
+ErrorOr<StringRef> SampleProfileReaderGCC::readString() {
+ StringRef Str;
+ if (!GcovBuffer.readString(Str))
+ return sampleprof_error::truncated;
+ return Str;
+}
+
+std::error_code SampleProfileReaderGCC::readHeader() {
+ // Read the magic identifier.
+ if (!GcovBuffer.readGCDAFormat())
+ return sampleprof_error::unrecognized_format;
+
+ // Read the version number. Note - the GCC reader does not validate this
+ // version, but the profile creator generates v704.
+ GCOV::GCOVVersion version;
+ if (!GcovBuffer.readGCOVVersion(version))
+ return sampleprof_error::unrecognized_format;
+
+ if (version != GCOV::V704)
+ return sampleprof_error::unsupported_version;
+
+ // Skip the empty integer.
+ if (std::error_code EC = skipNextWord())
+ return EC;
+
+ return sampleprof_error::success;
+}
+
+std::error_code SampleProfileReaderGCC::readSectionTag(uint32_t Expected) {
+ uint32_t Tag;
+ if (!GcovBuffer.readInt(Tag))
+ return sampleprof_error::truncated;
+
+ if (Tag != Expected)
+ return sampleprof_error::malformed;
+
+ if (std::error_code EC = skipNextWord())
+ return EC;
+
+ return sampleprof_error::success;
+}
+
+std::error_code SampleProfileReaderGCC::readNameTable() {
+ if (std::error_code EC = readSectionTag(GCOVTagAFDOFileNames))
+ return EC;
+
+ uint32_t Size;
+ if (!GcovBuffer.readInt(Size))
+ return sampleprof_error::truncated;
+
+ for (uint32_t I = 0; I < Size; ++I) {
+ StringRef Str;
+ if (!GcovBuffer.readString(Str))
+ return sampleprof_error::truncated;
+ Names.push_back(Str);
+ }
+
+ return sampleprof_error::success;
+}
+
+std::error_code SampleProfileReaderGCC::readFunctionProfiles() {
+ if (std::error_code EC = readSectionTag(GCOVTagAFDOFunction))
+ return EC;
+
+ uint32_t NumFunctions;
+ if (!GcovBuffer.readInt(NumFunctions))
+ return sampleprof_error::truncated;
+
+ SourceStack Stack;
+ for (uint32_t I = 0; I < NumFunctions; ++I)
+ if (std::error_code EC = readOneFunctionProfile(Stack, true))
+ return EC;
+
+ return sampleprof_error::success;
+}
+
+std::error_code SampleProfileReaderGCC::addSourceCount(StringRef Name,
+ const SourceStack &Src,
+ uint64_t Count) {
+ if (Src.size() == 0 || Src[0].Malformed())
+ return sampleprof_error::malformed;
+ FunctionSamples &FProfile = Profiles[Name];
+ FProfile.addTotalSamples(Count);
+ // FIXME(dnovillo) - Properly update inline stack for FnName.
+ FProfile.addBodySamples(Src[0].Line, Src[0].Discriminator, Count);
+ return sampleprof_error::success;
+}
+
+
+std::error_code
+SampleProfileReaderGCC::readOneFunctionProfile(const SourceStack &Stack,
+ bool Update) {
+ uint64_t HeadCount = 0;
+ if (Stack.size() == 0)
+ if (!GcovBuffer.readInt64(HeadCount))
+ return sampleprof_error::truncated;
+
+ uint32_t NameIdx;
+ if (!GcovBuffer.readInt(NameIdx))
+ return sampleprof_error::truncated;
+
+ StringRef Name(Names[NameIdx]);
+
+ uint32_t NumPosCounts;
+ if (!GcovBuffer.readInt(NumPosCounts))
+ return sampleprof_error::truncated;
+
+ uint32_t NumCallSites;
+ if (!GcovBuffer.readInt(NumCallSites))
+ return sampleprof_error::truncated;
+
+ if (Stack.size() == 0) {
+ FunctionSamples &FProfile = Profiles[Name];
+ FProfile.addHeadSamples(HeadCount);
+ if (FProfile.getTotalSamples() > 0)
+ Update = false;
+ }
+
+ for (uint32_t I = 0; I < NumPosCounts; ++I) {
+ uint32_t Offset;
+ if (!GcovBuffer.readInt(Offset))
+ return sampleprof_error::truncated;
+
+ uint32_t NumTargets;
+ if (!GcovBuffer.readInt(NumTargets))
+ return sampleprof_error::truncated;
+
+ uint64_t Count;
+ if (!GcovBuffer.readInt64(Count))
+ return sampleprof_error::truncated;
+
+ SourceInfo Info(Name, "", "", 0, Offset >> 16, Offset & 0xffff);
+ SourceStack NewStack;
+ NewStack.push_back(Info);
+ NewStack.insert(NewStack.end(), Stack.begin(), Stack.end());
+ if (Update)
+ addSourceCount(NewStack[NewStack.size() - 1].FuncName, NewStack, Count);
+
+ for (uint32_t J = 0; J < NumTargets; J++) {
+ uint32_t HistVal;
+ if (!GcovBuffer.readInt(HistVal))
+ return sampleprof_error::truncated;
+
+ if (HistVal != HIST_TYPE_INDIR_CALL_TOPN)
+ return sampleprof_error::malformed;
+
+ uint64_t TargetIdx;
+ if (!GcovBuffer.readInt64(TargetIdx))
+ return sampleprof_error::truncated;
+ StringRef TargetName(Names[TargetIdx]);
+
+ uint64_t TargetCount;
+ if (!GcovBuffer.readInt64(TargetCount))
+ return sampleprof_error::truncated;
+
+ if (Update) {
+ FunctionSamples &TargetProfile = Profiles[TargetName];
+ TargetProfile.addBodySamples(NewStack[0].Line,
+ NewStack[0].Discriminator, TargetCount);
+ }
+ }
+ }
+
+ for (uint32_t I = 0; I < NumCallSites; I++) {
+ // The offset is encoded as:
+ // high 16 bits: line offset to the start of the function.
+ // low 16 bits: discriminator.
+ uint32_t Offset;
+ if (!GcovBuffer.readInt(Offset))
+ return sampleprof_error::truncated;
+ SourceInfo Info(Name, "", "", 0, Offset >> 16, Offset & 0xffff);
+ SourceStack NewStack;
+ NewStack.push_back(Info);
+ NewStack.insert(NewStack.end(), Stack.begin(), Stack.end());
+ if (std::error_code EC = readOneFunctionProfile(NewStack, Update))
+ return EC;
+ }
+
+ return sampleprof_error::success;
+}
+
+std::error_code SampleProfileReaderGCC::readModuleGroup() {
+ // FIXME(dnovillo) - Module support still not implemented.
+ return sampleprof_error::not_implemented;
+}
+
+std::error_code SampleProfileReaderGCC::readWorkingSet() {
+ // FIXME(dnovillo) - Working sets still not implemented.
+ return sampleprof_error::not_implemented;
+}
+
+
+/// \brief Read a GCC AutoFDO profile.
+///
+/// This format is generated by the Linux Perf conversion tool at
+/// https://github.com/google/autofdo.
+std::error_code SampleProfileReaderGCC::read() {
+ // Read the string table.
+ if (std::error_code EC = readNameTable())
+ return EC;
+
+ // Read the source profile.
+ if (std::error_code EC = readFunctionProfiles())
+ return EC;
+
+ // FIXME(dnovillo) - Module groups and working set support are not
+ // yet implemented.
+#if 0
+ // Read the module group file.
+ if (std::error_code EC = readModuleGroup())
+ return EC;
+
+ // Read the working set.
+ if (std::error_code EC = readWorkingSet())
+ return EC;
+#endif
+
+ return sampleprof_error::success;
+}
+
+bool SampleProfileReaderGCC::hasFormat(const MemoryBuffer &Buffer) {
+ StringRef Magic(reinterpret_cast<const char *>(Buffer.getBufferStart()));
+ return Magic == "adcg*704";
+}
+
/// \brief Prepare a memory buffer for the contents of \p Filename.
///
/// \returns an error code indicating the status of the buffer.
std::unique_ptr<SampleProfileReader> Reader;
if (SampleProfileReaderBinary::hasFormat(*Buffer))
Reader.reset(new SampleProfileReaderBinary(std::move(Buffer), C));
+ else if (SampleProfileReaderGCC::hasFormat(*Buffer))
+ Reader.reset(new SampleProfileReaderGCC(std::move(Buffer), C));
else
Reader.reset(new SampleProfileReaderText(std::move(Buffer), C));
projects / oota-llvm.git / blobdiff