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[PGO] Introduce value profile data closure type. 

The closure is designed to abstact away two types of value profile
data:
  - InstrProfRecord which is the primary data structure used to
    represent profile data in host tools (reader, writer, and profile-use)
  - value profile runtime data structure suitable to be used by C
    runtime library.
Both sources of data need to serialize to disk/memory-buffer in common
format: ValueProfData.

The abstraction allows compiler-rt's raw profiler writer to share
the same code with indexed profile writer.

llvm-svn: 254008
This commit is contained in:
Xinliang David Li 2015-11-24 19:21:15 +00:00
parent c1986638a7
commit 6a829f78f9
1 changed files with 12 additions and 0 deletions
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12
llvm/include/llvm/ProfileData/InstrProf.h
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@ -538,6 +538,18 @@ typedef struct ValueProfData {
ValueProfRecord *getFirstValueProfRecord();
} ValueProfData;
typedef struct ValueProfRecordClosure {
void *Record;
uint32_t (*GetNumValueKinds)(void *Record);
uint32_t (*GetNumValueSites)(void *Record, uint32_t VKind);
uint32_t (*GetNumValueData)(void *Record, uint32_t VKind);
uint32_t (*GetNumValueDataForSite)(void *R, uint32_t VK, uint32_t S);
uint64_t (*RemapValueData)(uint64_t Value);
void (*GetValueForSite)(InstrProfValueData Dst[], void *R, uint32_t K,
uint32_t S);
ValueProfData *(*AllocateValueProfData)(size_t TotalSizeInBytes);
} ValueProfRecordClosure;
inline uint32_t getValueProfRecordHeaderSize(uint32_t NumValueSites) {
uint32_t Size = offsetof(ValueProfRecord, SiteCountArray) +
sizeof(uint8_t) * NumValueSites;