/*!
 * \brief Register an instrumented function.
 *
 * Calls to this are emitted by clang with -fprofile-instr-generate.  Such
 * calls are only required (and only emitted) on targets where we haven't
 * implemented linker magic to find the bounds of the sections.
 */
void __llvm_profile_register_function(void *Data_) {
  /* TODO: Only emit this function if we can't use linker magic. */
  const __llvm_profile_data *Data = (__llvm_profile_data*)Data_;
  if (!DataFirst) {
    DataFirst = Data;
    DataLast = Data + 1;
    NamesFirst = Data->Name;
    NamesLast = Data->Name + Data->NameSize;
    CountersFirst = Data->Counters;
    CountersLast = Data->Counters + Data->NumCounters;
    return;
  }

#define UPDATE_FIRST(First, New) \
  First = New < First ? New : First
  UPDATE_FIRST(DataFirst, Data);
  UPDATE_FIRST(NamesFirst, Data->Name);
  UPDATE_FIRST(CountersFirst, Data->Counters);
#undef UPDATE_FIRST

#define UPDATE_LAST(Last, New) \
  Last = New > Last ? New : Last
  UPDATE_LAST(DataLast, Data + 1);
  UPDATE_LAST(NamesLast, Data->Name + Data->NameSize);
  UPDATE_LAST(CountersLast, Data->Counters + Data->NumCounters);
#undef UPDATE_LAST
}
/*!
 * \brief Register an instrumented function.
 *
 * Calls to this are emitted by clang with -fprofile-instr-generate.  Such
 * calls are only required (and only emitted) on targets where we haven't
 * implemented linker magic to find the bounds of the sections.
 */
COMPILER_RT_VISIBILITY
void __llvm_profile_register_function(void *Data_) {
  /* TODO: Only emit this function if we can't use linker magic. */
  const __llvm_profile_data *Data = (__llvm_profile_data *)Data_;
  if (!DataFirst) {
    DataFirst = Data;
    DataLast = Data + 1;
    NamesFirst = Data->NamePtr;
    NamesLast = (const char *)Data->NamePtr + Data->NameSize;
    CountersFirst = Data->CounterPtr;
    CountersLast = (uint64_t *)Data->CounterPtr + Data->NumCounters;
    return;
  }

#define UPDATE_FIRST(First, New) First = New < First ? New : First
  UPDATE_FIRST(DataFirst, Data);
  UPDATE_FIRST(NamesFirst, (const char *)Data->NamePtr);
  UPDATE_FIRST(CountersFirst, (uint64_t *)Data->CounterPtr);
#undef UPDATE_FIRST

#define UPDATE_LAST(Last, New) Last = New > Last ? New : Last
  UPDATE_LAST(DataLast, Data + 1);
  UPDATE_LAST(NamesLast, (const char *)Data->NamePtr + Data->NameSize);
  UPDATE_LAST(CountersLast, (uint64_t *)Data->CounterPtr + Data->NumCounters);
#undef UPDATE_LAST
}