-/// This is the header of the data structure that defines the on-disk
-/// layout of the value profile data of a particular kind for one function.
-struct ValueProfRecord {
- // The kind of the value profile record.
- uint32_t Kind;
- // The number of value profile sites. It is guaranteed to be non-zero;
- // otherwise the record for this kind won't be emitted.
- uint32_t NumValueSites;
- // The first element of the array that stores the number of profiled
- // values for each value site. The size of the array is NumValueSites.
- // Since NumValueSites is greater than zero, there is at least one
- // element in the array.
- uint8_t SiteCountArray[1];
-
- // The fake declaration is for documentation purpose only.
- // Align the start of next field to be on 8 byte boundaries.
- // uint8_t Padding[X];
-
- // The array of value profile data. The size of the array is the sum
- // of all elements in SiteCountArray[].
- // InstrProfValueData ValueData[];
-
- /// Return the \c ValueProfRecord header size including the padding bytes.
- static uint32_t getHeaderSize(uint32_t NumValueSites);
- /// Return the total size of the value profile record including the
- /// header and the value data.
- static uint32_t getSize(uint32_t NumValueSites, uint32_t NumValueData);
- /// Return the total size of the value profile record including the
- /// header and the value data.
- uint32_t getSize() const { return getSize(NumValueSites, getNumValueData()); }
- /// Use this method to advance to the next \c ValueProfRecord.
- ValueProfRecord *getNext();
- /// Return the pointer to the first value profile data.
- InstrProfValueData *getValueData();
- /// Return the number of value sites.
- uint32_t getNumValueSites() const { return NumValueSites; }
- /// Return the number of value data.
- uint32_t getNumValueData() const;
- /// Read data from this record and save it to Record.
- void deserializeTo(InstrProfRecord &Record,
- InstrProfRecord::ValueMapType *VMap);
- /// Extract data from \c Record and serialize into this instance.
- void serializeFrom(const InstrProfRecord &Record, uint32_t ValueKind,
- uint32_t NumValueSites);
- /// In-place byte swap:
- /// Do byte swap for this instance. \c Old is the original order before
- /// the swap, and \c New is the New byte order.
- void swapBytes(support::endianness Old, support::endianness New);
-};