#define LLVM_PROFILEDATA_INSTRPROF_H_
#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSet.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MD5.h"
+#include <cstdint>
+#include <list>
#include <system_error>
#include <vector>
namespace llvm {
+
+/// 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 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 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 the name of the section containing function coverage mapping
+/// data.
+inline StringRef getInstrProfCoverageSectionName(bool AddSegment) {
+ return AddSegment ? "__DATA,__llvm_covmap" : "__llvm_covmap";
+}
+
+/// Return the name prefix of variables containing instrumented function names.
+inline StringRef getInstrProfNameVarPrefix() { return "__llvm_profile_name_"; }
+
+/// Return the name prefix of variables containing per-function control data.
+inline StringRef getInstrProfDataVarPrefix() { return "__llvm_profile_data_"; }
+
+/// Return the name prefix of profile counter variables.
+inline StringRef getInstrProfCountersVarPrefix() {
+ return "__llvm_profile_counters_";
+}
+
+/// Return the name prefix of the COMDAT group for instrumentation variables
+/// associated with a COMDAT function.
+inline StringRef getInstrProfComdatPrefix() { return "__llvm_profile_vars_"; }
+
+/// 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_coverage_mapping";
+}
+
+/// Return the name of function that registers all the per-function control
+/// data at program startup time by calling __llvm_register_function. This
+/// function has internal linkage and is called by __llvm_profile_init
+/// runtime method. This function is not generated for these platforms:
+/// Darwin, Linux, and FreeBSD.
+inline StringRef getInstrProfRegFuncsName() {
+ return "__llvm_profile_register_functions";
+}
+
+/// Return the name of the runtime interface that registers per-function control
+/// data for one instrumented function.
+inline StringRef getInstrProfRegFuncName() {
+ return "__llvm_profile_register_function";
+}
+
+/// Return the name of the runtime initialization method that is generated by
+/// the compiler. The function calls __llvm_profile_register_functions and
+/// __llvm_profile_override_default_filename functions if needed. This function
+/// has internal linkage and invoked at startup time via init_array.
+inline StringRef getInstrProfInitFuncName() { return "__llvm_profile_init"; }
+
+/// Return the name of the hook variable defined in profile runtime library.
+/// A reference to the variable causes the linker to link in the runtime
+/// initialization module (which defines the hook variable).
+inline StringRef getInstrProfRuntimeHookVarName() {
+ return "__llvm_profile_runtime";
+}
+
+/// Return the name of the compiler generated function that references the
+/// runtime hook variable. The function is a weak global.
+inline StringRef getInstrProfRuntimeHookVarUseFuncName() {
+ return "__llvm_profile_runtime_user";
+}
+
+/// Return the name of the profile runtime interface that overrides the default
+/// profile data file name.
+inline StringRef getInstrProfFileOverriderFuncName() {
+ return "__llvm_profile_override_default_filename";
+}
+
const std::error_category &instrprof_category();
enum class instrprof_error {
- success = 0,
- eof,
- bad_magic,
- bad_header,
- unsupported_version,
- unsupported_hash_type,
- too_large,
- truncated,
- malformed,
- unknown_function,
- hash_mismatch,
- count_mismatch,
- counter_overflow
+ success = 0,
+ eof,
+ bad_magic,
+ bad_header,
+ unsupported_version,
+ unsupported_hash_type,
+ too_large,
+ truncated,
+ malformed,
+ unknown_function,
+ hash_mismatch,
+ count_mismatch,
+ counter_overflow,
+ value_site_count_mismatch
};
inline std::error_code make_error_code(instrprof_error E) {
return std::error_code(static_cast<int>(E), instrprof_category());
}
+enum InstrProfValueKind : uint32_t {
+ IPVK_IndirectCallTarget = 0,
+
+ IPVK_First = IPVK_IndirectCallTarget,
+ IPVK_Last = IPVK_IndirectCallTarget
+};
+
+struct InstrProfStringTable {
+ // Set of string values in profiling data.
+ StringSet<> StringValueSet;
+ InstrProfStringTable() { StringValueSet.clear(); }
+ // Get a pointer to internal storage of a string in set
+ const char *getStringData(StringRef Str) {
+ auto Result = StringValueSet.find(Str);
+ return (Result == StringValueSet.end()) ? nullptr : Result->first().data();
+ }
+ // Insert a string to StringTable
+ const char *insertString(StringRef Str) {
+ auto Result = StringValueSet.insert(Str);
+ return Result.first->first().data();
+ }
+};
+
+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;
+
+ InstrProfValueSiteRecord() { ValueData.clear(); }
+
+ /// Sort ValueData ascending by TargetValue
+ void sortByTargetValues() {
+ ValueData.sort([](const ValueDataPair &left, const ValueDataPair &right) {
+ return left.first < right.first;
+ });
+ }
+
+ /// Merge data from another InstrProfValueSiteRecord
+ void mergeValueData(InstrProfValueSiteRecord &Input) {
+ this->sortByTargetValues();
+ Input.sortByTargetValues();
+ auto I = ValueData.begin();
+ auto IE = ValueData.end();
+ for (auto J = Input.ValueData.begin(), JE = Input.ValueData.end(); J != JE;
+ ++J) {
+ while (I != IE && I->first < J->first)
+ ++I;
+ if (I != IE && I->first == J->first) {
+ I->second += J->second;
+ ++I;
+ continue;
+ }
+ ValueData.insert(I, *J);
+ }
+ }
+};
+
/// Profiling information for a single function.
struct InstrProfRecord {
InstrProfRecord() {}
- InstrProfRecord(StringRef Name, uint64_t Hash, std::vector<uint64_t> &Counts)
+ InstrProfRecord(StringRef Name, uint64_t Hash, std::vector<uint64_t> Counts)
: Name(Name), Hash(Hash), Counts(std::move(Counts)) {}
StringRef Name;
uint64_t Hash;
std::vector<uint64_t> Counts;
+ std::vector<InstrProfValueSiteRecord> IndirectCallSites;
+
+ const std::vector<InstrProfValueSiteRecord> &
+ getValueSitesForKind(uint32_t ValueKind) const {
+ switch (ValueKind) {
+ case IPVK_IndirectCallTarget:
+ return IndirectCallSites;
+ }
+ llvm_unreachable("Unknown value kind!");
+ }
+
+ std::vector<InstrProfValueSiteRecord> &
+ getValueSitesForKind(uint32_t ValueKind) {
+ return const_cast<std::vector<InstrProfValueSiteRecord> &>(
+ const_cast<const InstrProfRecord *>(this)
+ ->getValueSitesForKind(ValueKind));
+ }
+};
+
+namespace IndexedInstrProf {
+enum class HashT : uint32_t {
+ MD5,
+
+ Last = MD5
};
+static inline uint64_t MD5Hash(StringRef Str) {
+ MD5 Hash;
+ Hash.update(Str);
+ llvm::MD5::MD5Result Result;
+ Hash.final(Result);
+ // Return the least significant 8 bytes. Our MD5 implementation returns the
+ // result in little endian, so we may need to swap bytes.
+ using namespace llvm::support;
+ return endian::read<uint64_t, little, unaligned>(Result);
+}
+
+static inline uint64_t ComputeHash(HashT Type, StringRef K) {
+ switch (Type) {
+ 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 HashT HashType = HashT::MD5;
+
+struct Header {
+ uint64_t Magic;
+ uint64_t Version;
+ uint64_t MaxFunctionCount;
+ uint64_t HashType;
+ uint64_t HashOffset;
+};
+
+} // 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
+
+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 <>
+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);
+}
+
+// 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;
+};
+
+// 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;
+};
+
+} // end namespace RawInstrProf
+
} // end namespace llvm
namespace std {
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