return "Success";
case instrprof_error::eof:
return "End of File";
+ case instrprof_error::unrecognized_format:
+ return "Unrecognized instrumentation profile encoding format";
case instrprof_error::bad_magic:
- return "Invalid profile data (bad magic)";
+ return "Invalid instrumentation profile data (bad magic)";
case instrprof_error::bad_header:
- return "Invalid profile data (file header is corrupt)";
+ return "Invalid instrumentation profile data (file header is corrupt)";
case instrprof_error::unsupported_version:
- return "Unsupported profiling format version";
+ return "Unsupported instrumentation profile format version";
case instrprof_error::unsupported_hash_type:
- return "Unsupported profiling hash";
+ return "Unsupported instrumentation profile hash type";
case instrprof_error::too_large:
return "Too much profile data";
case instrprof_error::truncated:
return "Truncated profile data";
case instrprof_error::malformed:
- return "Malformed profile data";
+ return "Malformed instrumentation profile data";
case instrprof_error::unknown_function:
return "No profile data available for function";
case instrprof_error::hash_mismatch:
- return "Function hash mismatch";
+ return "Function control flow change detected (hash mismatch)";
case instrprof_error::count_mismatch:
- return "Function count mismatch";
+ return "Function basic block count change detected (counter mismatch)";
case instrprof_error::counter_overflow:
return "Counter overflow";
case instrprof_error::value_site_count_mismatch:
- return "Function's value site counts mismatch";
+ return "Function value site count change detected (counter mismatch)";
}
llvm_unreachable("A value of instrprof_error has no message.");
}
GlobalVariable *createPGOFuncNameVar(Function &F, StringRef FuncName) {
return createPGOFuncNameVar(*F.getParent(), F.getLinkage(), FuncName);
}
+
+/// Return the total size in bytes of the on-disk value profile data
+/// given the data stored in Record.
+uint32_t getValueProfDataSize(ValueProfRecordClosure *Closure) {
+ uint32_t Kind;
+ uint32_t TotalSize = sizeof(ValueProfData);
+ const void *Record = Closure->Record;
+ uint32_t NumValueKinds = Closure->GetNumValueKinds(Record);
+ if (NumValueKinds == 0)
+ return TotalSize;
+
+ for (Kind = IPVK_First; Kind <= IPVK_Last; Kind++) {
+ uint32_t NumValueSites = Closure->GetNumValueSites(Record, Kind);
+ if (!NumValueSites)
+ continue;
+ TotalSize += getValueProfRecordSize(NumValueSites,
+ Closure->GetNumValueData(Record, Kind));
+ }
+ return TotalSize;
+}
+
+// Extract data from \c Closure and serialize into \c This instance.
+void serializeValueProfRecordFrom(ValueProfRecord *This,
+ ValueProfRecordClosure *Closure,
+ uint32_t ValueKind, uint32_t NumValueSites) {
+ uint32_t S;
+ const void *Record = Closure->Record;
+ This->Kind = ValueKind;
+ This->NumValueSites = NumValueSites;
+ InstrProfValueData *DstVD = getValueProfRecordValueData(This);
+
+ for (S = 0; S < NumValueSites; S++) {
+ uint32_t ND = Closure->GetNumValueDataForSite(Record, ValueKind, S);
+ This->SiteCountArray[S] = ND;
+ Closure->GetValueForSite(Record, DstVD, ValueKind, S,
+ Closure->RemapValueData);
+ DstVD += ND;
+ }
+}
+
+ValueProfData *serializeValueProfDataFrom(ValueProfRecordClosure *Closure) {
+ uint32_t TotalSize = getValueProfDataSize(Closure);
+
+ ValueProfData *VPD = Closure->AllocValueProfData(TotalSize);
+
+ VPD->TotalSize = TotalSize;
+ VPD->NumValueKinds = Closure->GetNumValueKinds(Closure->Record);
+ ValueProfRecord *VR = getFirstValueProfRecord(VPD);
+ for (uint32_t Kind = IPVK_First; Kind <= IPVK_Last; Kind++) {
+ uint32_t NumValueSites = Closure->GetNumValueSites(Closure->Record, Kind);
+ if (!NumValueSites)
+ continue;
+ serializeValueProfRecordFrom(VR, Closure, Kind, NumValueSites);
+ VR = getValueProfRecordNext(VR);
+ }
+ return VPD;
+}
+
+/*! \brief ValueProfRecordClosure Interface implementation for InstrProfRecord
+ * class. These C wrappers are used as adaptors so that C++ code can be
+ * invoked as callbacks.
+ */
+uint32_t getNumValueKindsInstrProf(const void *Record) {
+ return reinterpret_cast<const InstrProfRecord *>(Record)->getNumValueKinds();
+}
+
+uint32_t getNumValueSitesInstrProf(const void *Record, uint32_t VKind) {
+ return reinterpret_cast<const InstrProfRecord *>(Record)
+ ->getNumValueSites(VKind);
+}
+
+uint32_t getNumValueDataInstrProf(const void *Record, uint32_t VKind) {
+ return reinterpret_cast<const InstrProfRecord *>(Record)
+ ->getNumValueData(VKind);
+}
+
+uint32_t getNumValueDataForSiteInstrProf(const void *R, uint32_t VK,
+ uint32_t S) {
+ return reinterpret_cast<const InstrProfRecord *>(R)
+ ->getNumValueDataForSite(VK, S);
+}
+
+void getValueForSiteInstrProf(const void *R, InstrProfValueData *Dst,
+ uint32_t K, uint32_t S,
+ uint64_t (*Mapper)(uint32_t, uint64_t)) {
+ return reinterpret_cast<const InstrProfRecord *>(R)
+ ->getValueForSite(Dst, K, S, Mapper);
+}
+
+uint64_t stringToHash(uint32_t ValueKind, uint64_t Value) {
+ switch (ValueKind) {
+ case IPVK_IndirectCallTarget:
+ return IndexedInstrProf::ComputeHash(IndexedInstrProf::HashType,
+ (const char *)Value);
+ break;
+ default:
+ llvm_unreachable("value kind not handled !");
+ }
+ return Value;
+}
+
+ValueProfData *allocValueProfDataInstrProf(size_t TotalSizeInBytes) {
+ return (ValueProfData *)(new (::operator new(TotalSizeInBytes))
+ ValueProfData());
+}
+
+static ValueProfRecordClosure InstrProfRecordClosure = {
+ 0,
+ getNumValueKindsInstrProf,
+ getNumValueSitesInstrProf,
+ getNumValueDataInstrProf,
+ getNumValueDataForSiteInstrProf,
+ stringToHash,
+ getValueForSiteInstrProf,
+ allocValueProfDataInstrProf
+};
+
+// Wrapper implementation using the closure mechanism.
+uint32_t ValueProfData::getSize(const InstrProfRecord &Record) {
+ InstrProfRecordClosure.Record = &Record;
+ return getValueProfDataSize(&InstrProfRecordClosure);
+}
+
+// Wrapper implementation using the closure mechanism.
+std::unique_ptr<ValueProfData>
+ValueProfData::serializeFrom(const InstrProfRecord &Record) {
+ InstrProfRecordClosure.Record = &Record;
+
+ std::unique_ptr<ValueProfData> VPD(
+ serializeValueProfDataFrom(&InstrProfRecordClosure));
+ return VPD;
+}
+
+/* The value profiler runtime library stores the value profile data
+ * for a given function in NumValueSites and Nodes. This is the
+ * method to initialize the RuntimeRecord with the runtime data to
+ * pre-compute the information needed to efficiently implement
+ * ValueProfRecordClosure's callback interfaces.
+ */
+void initializeValueProfRuntimeRecord(ValueProfRuntimeRecord *RuntimeRecord,
+ uint16_t *NumValueSites,
+ ValueProfNode **Nodes) {
+ unsigned I, J, S = 0, NumValueKinds = 0;
+ RuntimeRecord->NumValueSites = NumValueSites;
+ RuntimeRecord->Nodes = Nodes;
+ for (I = 0; I <= IPVK_Last; I++) {
+ uint16_t N = NumValueSites[I];
+ if (!N) {
+ RuntimeRecord->SiteCountArray[I] = 0;
+ continue;
+ }
+ NumValueKinds++;
+ RuntimeRecord->SiteCountArray[I] = (uint8_t *)calloc(N, 1);
+ RuntimeRecord->NodesKind[I] = &RuntimeRecord->Nodes[S];
+ for (J = 0; J < N; J++) {
+ uint8_t C = 0;
+ ValueProfNode *Site = RuntimeRecord->Nodes[S + J];
+ while (Site) {
+ C++;
+ Site = Site->Next;
+ }
+ if (C > UCHAR_MAX)
+ C = UCHAR_MAX;
+ RuntimeRecord->SiteCountArray[I][J] = C;
+ }
+ S += N;
+ }
+ RuntimeRecord->NumValueKinds = NumValueKinds;
+}
+
+void finalizeValueProfRuntimeRecord(ValueProfRuntimeRecord *RuntimeRecord) {
+ unsigned I;
+ for (I = 0; I <= IPVK_Last; I++) {
+ if (RuntimeRecord->SiteCountArray[I])
+ free(RuntimeRecord->SiteCountArray[I]);
+ }
+}
+
+/* ValueProfRecordClosure Interface implementation for
+ * ValueProfDataRuntimeRecord. */
+uint32_t getNumValueKindsRT(const void *R) {
+ return ((const ValueProfRuntimeRecord *)R)->NumValueKinds;
+}
+
+uint32_t getNumValueSitesRT(const void *R, uint32_t VK) {
+ return ((const ValueProfRuntimeRecord *)R)->NumValueSites[VK];
+}
+
+uint32_t getNumValueDataForSiteRT(const void *R, uint32_t VK, uint32_t S) {
+ const ValueProfRuntimeRecord *Record = (const ValueProfRuntimeRecord *)R;
+ return Record->SiteCountArray[VK][S];
+}
+
+uint32_t getNumValueDataRT(const void *R, uint32_t VK) {
+ unsigned I, S = 0;
+ const ValueProfRuntimeRecord *Record = (const ValueProfRuntimeRecord *)R;
+ if (Record->SiteCountArray[VK] == 0)
+ return 0;
+ for (I = 0; I < Record->NumValueSites[VK]; I++)
+ S += Record->SiteCountArray[VK][I];
+ return S;
+}
+
+void getValueForSiteRT(const void *R, InstrProfValueData *Dst, uint32_t VK,
+ uint32_t S, uint64_t (*Mapper)(uint32_t, uint64_t)) {
+ unsigned I, N = 0;
+ const ValueProfRuntimeRecord *Record = (const ValueProfRuntimeRecord *)R;
+ N = getNumValueDataForSiteRT(R, VK, S);
+ ValueProfNode *VNode = Record->NodesKind[VK][S];
+ for (I = 0; I < N; I++) {
+ Dst[I] = VNode->VData;
+ VNode = VNode->Next;
+ }
+}
+
+ValueProfData *allocValueProfDataRT(size_t TotalSizeInBytes) {
+ return (ValueProfData *)calloc(TotalSizeInBytes, 1);
+}
+
+static ValueProfRecordClosure RTRecordClosure = {0,
+ getNumValueKindsRT,
+ getNumValueSitesRT,
+ getNumValueDataRT,
+ getNumValueDataForSiteRT,
+ 0,
+ getValueForSiteRT,
+ allocValueProfDataRT};
+
+/* Return the size of ValueProfData structure to store data
+ * recorded in the runtime record.
+ */
+uint32_t getValueProfDataSizeRT(const ValueProfRuntimeRecord *Record) {
+ RTRecordClosure.Record = Record;
+ return getValueProfDataSize(&RTRecordClosure);
+}
+
+/* Return a ValueProfData instance that stores the data collected
+ from runtime. */
+ValueProfData *
+serializeValueProfDataFromRT(const ValueProfRuntimeRecord *Record) {
+ RTRecordClosure.Record = Record;
+ return serializeValueProfDataFrom(&RTRecordClosure);
+}
+
+
+
+
+void ValueProfRecord::deserializeTo(InstrProfRecord &Record,
+ InstrProfRecord::ValueMapType *VMap) {
+ Record.reserveSites(Kind, NumValueSites);
+
+ InstrProfValueData *ValueData = getValueProfRecordValueData(this);
+ for (uint64_t VSite = 0; VSite < NumValueSites; ++VSite) {
+ uint8_t ValueDataCount = this->SiteCountArray[VSite];
+ Record.addValueData(Kind, VSite, ValueData, ValueDataCount, VMap);
+ ValueData += ValueDataCount;
+ }
+}
+
+// For writing/serializing, Old is the host endianness, and New is
+// byte order intended on disk. For Reading/deserialization, Old
+// is the on-disk source endianness, and New is the host endianness.
+void ValueProfRecord::swapBytes(support::endianness Old,
+ support::endianness New) {
+ using namespace support;
+ if (Old == New)
+ return;
+
+ if (getHostEndianness() != Old) {
+ sys::swapByteOrder<uint32_t>(NumValueSites);
+ sys::swapByteOrder<uint32_t>(Kind);
+ }
+ uint32_t ND = getValueProfRecordNumValueData(this);
+ InstrProfValueData *VD = getValueProfRecordValueData(this);
+
+ // No need to swap byte array: SiteCountArrray.
+ for (uint32_t I = 0; I < ND; I++) {
+ sys::swapByteOrder<uint64_t>(VD[I].Value);
+ sys::swapByteOrder<uint64_t>(VD[I].Count);
+ }
+ if (getHostEndianness() == Old) {
+ sys::swapByteOrder<uint32_t>(NumValueSites);
+ sys::swapByteOrder<uint32_t>(Kind);
+ }
+}
+
+void ValueProfData::deserializeTo(InstrProfRecord &Record,
+ InstrProfRecord::ValueMapType *VMap) {
+ if (NumValueKinds == 0)
+ return;
+
+ ValueProfRecord *VR = getFirstValueProfRecord(this);
+ for (uint32_t K = 0; K < NumValueKinds; K++) {
+ VR->deserializeTo(Record, VMap);
+ VR = getValueProfRecordNext(VR);
+ }
+}
+
+template <class T>
+static T swapToHostOrder(const unsigned char *&D, support::endianness Orig) {
+ using namespace support;
+ if (Orig == little)
+ return endian::readNext<T, little, unaligned>(D);
+ else
+ return endian::readNext<T, big, unaligned>(D);
+}
+
+static std::unique_ptr<ValueProfData> allocValueProfData(uint32_t TotalSize) {
+ return std::unique_ptr<ValueProfData>(new (::operator new(TotalSize))
+ ValueProfData());
+}
+
+ErrorOr<std::unique_ptr<ValueProfData>>
+ValueProfData::getValueProfData(const unsigned char *D,
+ const unsigned char *const BufferEnd,
+ support::endianness Endianness) {
+ using namespace support;
+ if (D + sizeof(ValueProfData) > BufferEnd)
+ return instrprof_error::truncated;
+
+ const unsigned char *Header = D;
+ uint32_t TotalSize = swapToHostOrder<uint32_t>(Header, Endianness);
+ uint32_t NumValueKinds = swapToHostOrder<uint32_t>(Header, Endianness);
+
+ if (D + TotalSize > BufferEnd)
+ return instrprof_error::too_large;
+ if (NumValueKinds > IPVK_Last + 1)
+ return instrprof_error::malformed;
+ // Total size needs to be mulltiple of quadword size.
+ if (TotalSize % sizeof(uint64_t))
+ return instrprof_error::malformed;
+
+ std::unique_ptr<ValueProfData> VPD = allocValueProfData(TotalSize);
+
+ memcpy(VPD.get(), D, TotalSize);
+ // Byte swap.
+ VPD->swapBytesToHost(Endianness);
+
+ // Data integrity check:
+ ValueProfRecord *VR = getFirstValueProfRecord(VPD.get());
+ for (uint32_t K = 0; K < VPD->NumValueKinds; K++) {
+ if (VR->Kind > IPVK_Last)
+ return instrprof_error::malformed;
+ VR = getValueProfRecordNext(VR);
+ if ((char *)VR - (char *)VPD.get() > (ptrdiff_t)TotalSize)
+ return instrprof_error::malformed;
+ }
+
+ return std::move(VPD);
+}
+
+void ValueProfData::swapBytesToHost(support::endianness Endianness) {
+ using namespace support;
+ if (Endianness == getHostEndianness())
+ return;
+
+ sys::swapByteOrder<uint32_t>(TotalSize);
+ sys::swapByteOrder<uint32_t>(NumValueKinds);
+
+ ValueProfRecord *VR = getFirstValueProfRecord(this);
+ for (uint32_t K = 0; K < NumValueKinds; K++) {
+ VR->swapBytes(Endianness, getHostEndianness());
+ VR = getValueProfRecordNext(VR);
+ }
+}
+
+void ValueProfData::swapBytesFromHost(support::endianness Endianness) {
+ using namespace support;
+ if (Endianness == getHostEndianness())
+ return;
+
+ ValueProfRecord *VR = getFirstValueProfRecord(this);
+ for (uint32_t K = 0; K < NumValueKinds; K++) {
+ ValueProfRecord *NVR = getValueProfRecordNext(VR);
+ VR->swapBytes(getHostEndianness(), Endianness);
+ VR = NVR;
+ }
+ sys::swapByteOrder<uint32_t>(TotalSize);
+ sys::swapByteOrder<uint32_t>(NumValueKinds);
+}
+
}
projects / oota-llvm.git / blobdiff