compiler-rt/lib/profile/InstrProfilingMergeFile.c

/*===- InstrProfilingMergeFile.c - Profile in-process Merging  ------------===*\
|*
|* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|* See https://llvm.org/LICENSE.txt for license information.
|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|*
|*===----------------------------------------------------------------------===
|* This file defines APIs needed to support in-process merging for profile data
|* stored in files.
\*===----------------------------------------------------------------------===*/

#if !defined(__Fuchsia__)

#include "InstrProfiling.h"
#include "InstrProfilingInternal.h"

#define INSTR_PROF_VALUE_PROF_DATA
#include "profile/InstrProfData.inc"

/* Merge value profile data pointed to by SrcValueProfData into
 * in-memory profile counters pointed by to DstData.  */
COMPILER_RT_VISIBILITY
void lprofMergeValueProfData(ValueProfData *SrcValueProfData,
                             __llvm_profile_data *DstData) {
  unsigned I, S, V, DstIndex = 0;
  InstrProfValueData *VData;
  ValueProfRecord *VR = getFirstValueProfRecord(SrcValueProfData);
  for (I = 0; I < SrcValueProfData->NumValueKinds; I++) {
    VData = getValueProfRecordValueData(VR);
    unsigned SrcIndex = 0;
    for (S = 0; S < VR->NumValueSites; S++) {
      uint8_t NV = VR->SiteCountArray[S];
      for (V = 0; V < NV; V++) {
        __llvm_profile_instrument_target_value(VData[SrcIndex].Value, DstData,
                                               DstIndex, VData[SrcIndex].Count);
        ++SrcIndex;
      }
      ++DstIndex;
    }
    VR = getValueProfRecordNext(VR);
  }
}

#endif