#ifndef LLVM_PROFILEDATA_INSTRPROF_H_
#define LLVM_PROFILEDATA_INSTRPROF_H_
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSet.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/ProfileData/InstrProfData.inc"
#include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/MD5.h"
#include <cstdint>
#include <list>
#include <system_error>
#include <vector>
+#define INSTR_PROF_INDEX_VERSION 3
namespace llvm {
+class Function;
+class GlobalVariable;
+class Module;
+
/// Return the name of data section containing profile counter variables.
inline StringRef getInstrProfCountersSectionName(bool AddSegment) {
- return AddSegment ? "__DATA,__llvm_prf_cnts" : "__llvm_prf_cnts";
+ return AddSegment ? "__DATA," INSTR_PROF_CNTS_SECT_NAME_STR
+ : INSTR_PROF_CNTS_SECT_NAME_STR;
}
/// Return the name of data section containing names of instrumented
/// functions.
inline StringRef getInstrProfNameSectionName(bool AddSegment) {
- return AddSegment ? "__DATA,__llvm_prf_names" : "__llvm_prf_names";
+ return AddSegment ? "__DATA," INSTR_PROF_NAME_SECT_NAME_STR
+ : INSTR_PROF_NAME_SECT_NAME_STR;
}
/// Return the name of the data section containing per-function control
/// data.
inline StringRef getInstrProfDataSectionName(bool AddSegment) {
- return AddSegment ? "__DATA,__llvm_prf_data" : "__llvm_prf_data";
+ return AddSegment ? "__DATA," INSTR_PROF_DATA_SECT_NAME_STR
+ : INSTR_PROF_DATA_SECT_NAME_STR;
+}
+
+/// Return the name profile runtime entry point to do value profiling
+/// for a given site.
+inline StringRef getInstrProfValueProfFuncName() {
+ return INSTR_PROF_VALUE_PROF_FUNC_STR;
}
/// Return the name of the section containing function coverage mapping
/// associated with a COMDAT function.
inline StringRef getInstrProfComdatPrefix() { return "__llvm_profile_vars_"; }
-/// Return the name of a covarage mapping variable (internal linkage)
+/// Return the name of a covarage mapping variable (internal linkage)
/// for each instrumented source module. Such variables are allocated
/// in the __llvm_covmap section.
inline StringRef getCoverageMappingVarName() {
return "__llvm_profile_override_default_filename";
}
+/// Return the modified name for function \c F suitable to be
+/// used the key for profile lookup.
+std::string getPGOFuncName(const Function &F,
+ uint64_t Version = INSTR_PROF_INDEX_VERSION);
+
+/// Return the modified name for a function suitable to be
+/// used the key for profile lookup. The function's original
+/// name is \c RawFuncName and has linkage of type \c Linkage.
+/// The function is defined in module \c FileName.
+std::string getPGOFuncName(StringRef RawFuncName,
+ GlobalValue::LinkageTypes Linkage,
+ StringRef FileName,
+ uint64_t Version = INSTR_PROF_INDEX_VERSION);
+
+/// Create and return the global variable for function name used in PGO
+/// instrumentation. \c FuncName is the name of the function returned
+/// by \c getPGOFuncName call.
+GlobalVariable *createPGOFuncNameVar(Function &F, StringRef FuncName);
+
+/// Create and return the global variable for function name used in PGO
+/// instrumentation. /// \c FuncName is the name of the function
+/// returned by \c getPGOFuncName call, \c M is the owning module,
+/// and \c Linkage is the linkage of the instrumented function.
+GlobalVariable *createPGOFuncNameVar(Module &M,
+ GlobalValue::LinkageTypes Linkage,
+ StringRef FuncName);
+
const std::error_category &instrprof_category();
enum class instrprof_error {
success = 0,
eof,
+ unrecognized_format,
bad_magic,
bad_header,
unsupported_version,
}
enum InstrProfValueKind : uint32_t {
- IPVK_IndirectCallTarget = 0,
-
- IPVK_First = IPVK_IndirectCallTarget,
- IPVK_Last = IPVK_IndirectCallTarget
+#define VALUE_PROF_KIND(Enumerator, Value) Enumerator = Value,
+#include "llvm/ProfileData/InstrProfData.inc"
};
struct InstrProfStringTable {
};
struct InstrProfValueSiteRecord {
- /// Typedef for a single TargetValue-NumTaken pair.
- typedef std::pair<uint64_t, uint64_t> ValueDataPair;
/// Value profiling data pairs at a given value site.
- std::list<ValueDataPair> ValueData;
+ std::list<InstrProfValueData> ValueData;
InstrProfValueSiteRecord() { ValueData.clear(); }
+ template <class InputIterator>
+ InstrProfValueSiteRecord(InputIterator F, InputIterator L)
+ : ValueData(F, L) {}
- /// Sort ValueData ascending by TargetValue
+ /// Sort ValueData ascending by Value
void sortByTargetValues() {
- ValueData.sort([](const ValueDataPair &left, const ValueDataPair &right) {
- return left.first < right.first;
- });
+ ValueData.sort(
+ [](const InstrProfValueData &left, const InstrProfValueData &right) {
+ return left.Value < right.Value;
+ });
}
/// Merge data from another InstrProfValueSiteRecord
auto IE = ValueData.end();
for (auto J = Input.ValueData.begin(), JE = Input.ValueData.end(); J != JE;
++J) {
- while (I != IE && I->first < J->first)
+ while (I != IE && I->Value < J->Value)
++I;
- if (I != IE && I->first == J->first) {
- I->second += J->second;
+ if (I != IE && I->Value == J->Value) {
+ I->Count = SaturatingAdd(I->Count, J->Count);
++I;
continue;
}
StringRef Name;
uint64_t Hash;
std::vector<uint64_t> Counts;
- std::vector<InstrProfValueSiteRecord> IndirectCallSites;
+ typedef std::vector<std::pair<uint64_t, const char *>> ValueMapType;
+
+ /// Return the number of value profile kinds with non-zero number
+ /// of profile sites.
+ inline uint32_t getNumValueKinds() const;
+ /// Return the number of instrumented sites for ValueKind.
+ inline uint32_t getNumValueSites(uint32_t ValueKind) const;
+ /// Return the total number of ValueData for ValueKind.
+ inline uint32_t getNumValueData(uint32_t ValueKind) const;
+ /// Return the number of value data collected for ValueKind at profiling
+ /// site: Site.
+ inline uint32_t getNumValueDataForSite(uint32_t ValueKind,
+ uint32_t Site) const;
+ /// Return the array of profiled values at \p Site.
+ inline std::unique_ptr<InstrProfValueData[]>
+ getValueForSite(uint32_t ValueKind, uint32_t Site,
+ uint64_t (*ValueMapper)(uint32_t, uint64_t) = 0) const;
+ inline void
+ getValueForSite(InstrProfValueData Dest[], uint32_t ValueKind, uint32_t Site,
+ uint64_t (*ValueMapper)(uint32_t, uint64_t) = 0) const;
+ /// Reserve space for NumValueSites sites.
+ inline void reserveSites(uint32_t ValueKind, uint32_t NumValueSites);
+ /// Add ValueData for ValueKind at value Site.
+ inline void addValueData(uint32_t ValueKind, uint32_t Site,
+ InstrProfValueData *VData, uint32_t N,
+ ValueMapType *HashKeys);
+
+ /// Merge the counts in \p Other into this one.
+ inline instrprof_error merge(InstrProfRecord &Other);
+
+ /// Used by InstrProfWriter: update the value strings to commoned strings in
+ /// the writer instance.
+ inline void updateStrings(InstrProfStringTable *StrTab);
+
+ /// Clear value data entries
+ inline void clearValueData() {
+ for (uint32_t Kind = IPVK_First; Kind <= IPVK_Last; ++Kind)
+ getValueSitesForKind(Kind).clear();
+ }
+
+private:
+ std::vector<InstrProfValueSiteRecord> IndirectCallSites;
const std::vector<InstrProfValueSiteRecord> &
getValueSitesForKind(uint32_t ValueKind) const {
switch (ValueKind) {
case IPVK_IndirectCallTarget:
return IndirectCallSites;
+ default:
+ llvm_unreachable("Unknown value kind!");
}
- llvm_unreachable("Unknown value kind!");
+ return IndirectCallSites;
}
std::vector<InstrProfValueSiteRecord> &
const_cast<const InstrProfRecord *>(this)
->getValueSitesForKind(ValueKind));
}
+
+ // Map indirect call target name hash to name string.
+ uint64_t remapValue(uint64_t Value, uint32_t ValueKind,
+ ValueMapType *HashKeys) {
+ if (!HashKeys)
+ return Value;
+ switch (ValueKind) {
+ case IPVK_IndirectCallTarget: {
+ auto Result =
+ std::lower_bound(HashKeys->begin(), HashKeys->end(), Value,
+ [](const std::pair<uint64_t, const char *> &LHS,
+ uint64_t RHS) { return LHS.first < RHS; });
+ if (Result != HashKeys->end())
+ Value = (uint64_t)Result->second;
+ break;
+ }
+ }
+ return Value;
+ }
+
+ // Merge Value Profile data from Src record to this record for ValueKind.
+ instrprof_error mergeValueProfData(uint32_t ValueKind, InstrProfRecord &Src) {
+ uint32_t ThisNumValueSites = getNumValueSites(ValueKind);
+ uint32_t OtherNumValueSites = Src.getNumValueSites(ValueKind);
+ if (ThisNumValueSites != OtherNumValueSites)
+ return instrprof_error::value_site_count_mismatch;
+ std::vector<InstrProfValueSiteRecord> &ThisSiteRecords =
+ getValueSitesForKind(ValueKind);
+ std::vector<InstrProfValueSiteRecord> &OtherSiteRecords =
+ Src.getValueSitesForKind(ValueKind);
+ for (uint32_t I = 0; I < ThisNumValueSites; I++)
+ ThisSiteRecords[I].mergeValueData(OtherSiteRecords[I]);
+ return instrprof_error::success;
+ }
};
+uint32_t InstrProfRecord::getNumValueKinds() const {
+ uint32_t NumValueKinds = 0;
+ for (uint32_t Kind = IPVK_First; Kind <= IPVK_Last; ++Kind)
+ NumValueKinds += !(getValueSitesForKind(Kind).empty());
+ return NumValueKinds;
+}
+
+uint32_t InstrProfRecord::getNumValueData(uint32_t ValueKind) const {
+ uint32_t N = 0;
+ const std::vector<InstrProfValueSiteRecord> &SiteRecords =
+ getValueSitesForKind(ValueKind);
+ for (auto &SR : SiteRecords) {
+ N += SR.ValueData.size();
+ }
+ return N;
+}
+
+uint32_t InstrProfRecord::getNumValueSites(uint32_t ValueKind) const {
+ return getValueSitesForKind(ValueKind).size();
+}
+
+uint32_t InstrProfRecord::getNumValueDataForSite(uint32_t ValueKind,
+ uint32_t Site) const {
+ return getValueSitesForKind(ValueKind)[Site].ValueData.size();
+}
+
+std::unique_ptr<InstrProfValueData[]> InstrProfRecord::getValueForSite(
+ uint32_t ValueKind, uint32_t Site,
+ uint64_t (*ValueMapper)(uint32_t, uint64_t)) const {
+ uint32_t N = getNumValueDataForSite(ValueKind, Site);
+ if (N == 0)
+ return std::unique_ptr<InstrProfValueData[]>(nullptr);
+
+ auto VD = llvm::make_unique<InstrProfValueData[]>(N);
+ getValueForSite(VD.get(), ValueKind, Site, ValueMapper);
+
+ return VD;
+}
+
+void InstrProfRecord::getValueForSite(InstrProfValueData Dest[],
+ uint32_t ValueKind, uint32_t Site,
+ uint64_t (*ValueMapper)(uint32_t,
+ uint64_t)) const {
+ uint32_t I = 0;
+ for (auto V : getValueSitesForKind(ValueKind)[Site].ValueData) {
+ Dest[I].Value = ValueMapper ? ValueMapper(ValueKind, V.Value) : V.Value;
+ Dest[I].Count = V.Count;
+ I++;
+ }
+}
+
+void InstrProfRecord::addValueData(uint32_t ValueKind, uint32_t Site,
+ InstrProfValueData *VData, uint32_t N,
+ ValueMapType *HashKeys) {
+ for (uint32_t I = 0; I < N; I++) {
+ VData[I].Value = remapValue(VData[I].Value, ValueKind, HashKeys);
+ }
+ std::vector<InstrProfValueSiteRecord> &ValueSites =
+ getValueSitesForKind(ValueKind);
+ if (N == 0)
+ ValueSites.push_back(InstrProfValueSiteRecord());
+ else
+ ValueSites.emplace_back(VData, VData + N);
+}
+
+void InstrProfRecord::reserveSites(uint32_t ValueKind, uint32_t NumValueSites) {
+ std::vector<InstrProfValueSiteRecord> &ValueSites =
+ getValueSitesForKind(ValueKind);
+ ValueSites.reserve(NumValueSites);
+}
+
+void InstrProfRecord::updateStrings(InstrProfStringTable *StrTab) {
+ if (!StrTab)
+ return;
+
+ Name = StrTab->insertString(Name);
+ for (auto &VSite : IndirectCallSites)
+ for (auto &VData : VSite.ValueData)
+ VData.Value = (uint64_t)StrTab->insertString((const char *)VData.Value);
+}
+
+instrprof_error InstrProfRecord::merge(InstrProfRecord &Other) {
+ // If the number of counters doesn't match we either have bad data
+ // or a hash collision.
+ if (Counts.size() != Other.Counts.size())
+ return instrprof_error::count_mismatch;
+
+ instrprof_error Result = instrprof_error::success;
+
+ for (size_t I = 0, E = Other.Counts.size(); I < E; ++I) {
+ bool ResultOverflowed;
+ Counts[I] = SaturatingAdd(Counts[I], Other.Counts[I], &ResultOverflowed);
+ if (ResultOverflowed)
+ Result = instrprof_error::counter_overflow;
+ }
+
+ for (uint32_t Kind = IPVK_First; Kind <= IPVK_Last; ++Kind) {
+ instrprof_error MergeValueResult = mergeValueProfData(Kind, Other);
+ if (MergeValueResult != instrprof_error::success)
+ Result = MergeValueResult;
+ }
+
+ return Result;
+}
+
+inline support::endianness getHostEndianness() {
+ return sys::IsLittleEndianHost ? support::little : support::big;
+}
+
+
+// Include definitions for value profile data
+#define INSTR_PROF_VALUE_PROF_DATA
+#include "llvm/ProfileData/InstrProfData.inc"
+
+ /*
+ * Initialize the record for runtime value profile data.
+ * Return 0 if the initialization is successful, otherwise
+ * return 1.
+ */
+int initializeValueProfRuntimeRecord(ValueProfRuntimeRecord *RuntimeRecord,
+ const uint16_t *NumValueSites,
+ ValueProfNode **Nodes);
+
+/* Release memory allocated for the runtime record. */
+void finalizeValueProfRuntimeRecord(ValueProfRuntimeRecord *RuntimeRecord);
+
+/* Return the size of ValueProfData structure that can be used to store
+ the value profile data collected at runtime. */
+uint32_t getValueProfDataSizeRT(const ValueProfRuntimeRecord *Record);
+
+/* Return a ValueProfData instance that stores the data collected at runtime. */
+ValueProfData *
+serializeValueProfDataFromRT(const ValueProfRuntimeRecord *Record,
+ ValueProfData *Dst);
+
namespace IndexedInstrProf {
+
enum class HashT : uint32_t {
MD5,
static inline uint64_t ComputeHash(HashT Type, StringRef K) {
switch (Type) {
- case HashT::MD5:
- return IndexedInstrProf::MD5Hash(K);
+ case HashT::MD5:
+ return IndexedInstrProf::MD5Hash(K);
}
llvm_unreachable("Unhandled hash type");
}
-const uint64_t Magic = 0x8169666f72706cff; // "\xfflprofi\x81"
-const uint64_t Version = 3;
+const uint64_t Magic = 0x8169666f72706cff; // "\xfflprofi\x81"
+const uint64_t Version = INSTR_PROF_INDEX_VERSION;
const HashT HashType = HashT::MD5;
+// This structure defines the file header of the LLVM profile
+// data file in indexed-format.
struct Header {
uint64_t Magic;
uint64_t Version;
uint64_t HashOffset;
};
-} // end namespace IndexedInstrProf
+} // end namespace IndexedInstrProf
namespace RawInstrProf {
-const uint64_t Version = 1;
-
-// Magic number to detect file format and endianness.
-// Use 255 at one end, since no UTF-8 file can use that character. Avoid 0,
-// so that utilities, like strings, don't grab it as a string. 129 is also
-// invalid UTF-8, and high enough to be interesting.
-// Use "lprofr" in the centre to stand for "LLVM Profile Raw", or "lprofR"
-// for 32-bit platforms.
-// The magic and version need to be kept in sync with
-// projects/compiler-rt/lib/profile/InstrProfiling.c
+const uint64_t Version = INSTR_PROF_RAW_VERSION;
-template <class IntPtrT>
-inline uint64_t getMagic();
-template <>
-inline uint64_t getMagic<uint64_t>() {
- return uint64_t(255) << 56 | uint64_t('l') << 48 | uint64_t('p') << 40 |
- uint64_t('r') << 32 | uint64_t('o') << 24 | uint64_t('f') << 16 |
- uint64_t('r') << 8 | uint64_t(129);
+template <class IntPtrT> inline uint64_t getMagic();
+template <> inline uint64_t getMagic<uint64_t>() {
+ return INSTR_PROF_RAW_MAGIC_64;
}
-template <>
-inline uint64_t getMagic<uint32_t>() {
- return uint64_t(255) << 56 | uint64_t('l') << 48 | uint64_t('p') << 40 |
- uint64_t('r') << 32 | uint64_t('o') << 24 | uint64_t('f') << 16 |
- uint64_t('R') << 8 | uint64_t(129);
+template <> inline uint64_t getMagic<uint32_t>() {
+ return INSTR_PROF_RAW_MAGIC_32;
}
+// Per-function profile data header/control structure.
// The definition should match the structure defined in
// compiler-rt/lib/profile/InstrProfiling.h.
// It should also match the synthesized type in
// Transforms/Instrumentation/InstrProfiling.cpp:getOrCreateRegionCounters.
-
-template <class IntPtrT>
-struct ProfileData {
- const uint32_t NameSize;
- const uint32_t NumCounters;
- const uint64_t FuncHash;
- const IntPtrT NamePtr;
- const IntPtrT CounterPtr;
+template <class IntPtrT> struct LLVM_ALIGNAS(8) ProfileData {
+ #define INSTR_PROF_DATA(Type, LLVMType, Name, Init) Type Name;
+ #include "llvm/ProfileData/InstrProfData.inc"
};
+// File header structure of the LLVM profile data in raw format.
// The definition should match the header referenced in
// compiler-rt/lib/profile/InstrProfilingFile.c and
// InstrProfilingBuffer.c.
-
struct Header {
- const uint64_t Magic;
- const uint64_t Version;
- const uint64_t DataSize;
- const uint64_t CountersSize;
- const uint64_t NamesSize;
- const uint64_t CountersDelta;
- const uint64_t NamesDelta;
+#define INSTR_PROF_RAW_HEADER(Type, Name, Init) const Type Name;
+#include "llvm/ProfileData/InstrProfData.inc"
};
} // end namespace RawInstrProf
+namespace coverage {
+
+// Profile coverage map has the following layout:
+// [CoverageMapFileHeader]
+// [ArrayStart]
+// [CovMapFunctionRecord]
+// [CovMapFunctionRecord]
+// ...
+// [ArrayEnd]
+// [Encoded Region Mapping Data]
+LLVM_PACKED_START
+template <class IntPtrT> struct CovMapFunctionRecord {
+ #define COVMAP_FUNC_RECORD(Type, LLVMType, Name, Init) Type Name;
+ #include "llvm/ProfileData/InstrProfData.inc"
+};
+LLVM_PACKED_END
+
+}
+
} // end namespace llvm
namespace std {
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