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[PGO] Add mapper callback to interfaces retrieving value data for site (NFC)

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This allows cleaner implementation and merging retrieving/mapping in
one pass.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254038 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Xinliang David Li 2015-11-24 23:36:52 +00:00
parent f65b5feba4
commit 7de0a38604
2 changed files with 28 additions and 19 deletions
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23
include/llvm/ProfileData/InstrProf.h
View File

@ -261,9 +261,11 @@ struct InstrProfRecord {
uint32_t Site) const;
/// Return the array of profiled values at \p Site.
inline std::unique_ptr<InstrProfValueData[]>
getValueForSite(uint32_t ValueKind, uint32_t Site) const;
inline void getValueForSite(InstrProfValueData Dest[], uint32_t ValueKind,
uint32_t Site) const;
getValueForSite(uint32_t ValueKind, uint32_t Site,
uint64_t (*ValueMapper)(uint32_t, uint64_t) = 0) const;
inline void
getValueForSite(InstrProfValueData Dest[], uint32_t ValueKind, uint32_t Site,
uint64_t (*ValueMapper)(uint32_t, uint64_t) = 0) const;
/// Reserve space for NumValueSites sites.
inline void reserveSites(uint32_t ValueKind, uint32_t NumValueSites);
/// Add ValueData for ValueKind at value Site.
@ -365,22 +367,27 @@ uint32_t InstrProfRecord::getNumValueDataForSite(uint32_t ValueKind,
return getValueSitesForKind(ValueKind)[Site].ValueData.size();
}
std::unique_ptr<InstrProfValueData[]>
InstrProfRecord::getValueForSite(uint32_t ValueKind, uint32_t Site) const {
std::unique_ptr<InstrProfValueData[]> InstrProfRecord::getValueForSite(
uint32_t ValueKind, uint32_t Site,
uint64_t (*ValueMapper)(uint32_t, uint64_t)) const {
uint32_t N = getNumValueDataForSite(ValueKind, Site);
if (N == 0)
return std::unique_ptr<InstrProfValueData[]>(nullptr);
auto VD = llvm::make_unique<InstrProfValueData[]>(N);
getValueForSite(VD.get(), ValueKind, Site);
getValueForSite(VD.get(), ValueKind, Site, ValueMapper);
return VD;
}
void InstrProfRecord::getValueForSite(InstrProfValueData Dest[],
uint32_t ValueKind, uint32_t Site) const {
uint32_t ValueKind, uint32_t Site,
uint64_t (*ValueMapper)(uint32_t,
uint64_t)) const {
uint32_t I = 0;
for (auto V : getValueSitesForKind(ValueKind)[Site].ValueData) {
Dest[I] = V;
Dest[I].Value = ValueMapper ? ValueMapper(ValueKind, V.Value) : V.Value;
Dest[I].Count = V.Count;
I++;
}
}

24
lib/ProfileData/InstrProf.cpp
View File

@ -131,6 +131,18 @@ GlobalVariable *createPGOFuncNameVar(Function &F, StringRef FuncName) {
return createPGOFuncNameVar(*F.getParent(), F.getLinkage(), FuncName);
}
uint64_t StringToHash(uint32_t ValueKind, uint64_t Value) {
switch (ValueKind) {
case IPVK_IndirectCallTarget:
return IndexedInstrProf::ComputeHash(IndexedInstrProf::HashType,
(const char *)Value);
break;
default:
llvm_unreachable("value kind not handled !");
}
return Value;
}
void ValueProfRecord::deserializeTo(InstrProfRecord &Record,
InstrProfRecord::ValueMapType *VMap) {
Record.reserveSites(Kind, NumValueSites);
@ -152,17 +164,7 @@ void ValueProfRecord::serializeFrom(const InstrProfRecord &Record,
for (uint32_t S = 0; S < NumValueSites; S++) {
uint32_t ND = Record.getNumValueDataForSite(ValueKind, S);
SiteCountArray[S] = ND;
Record.getValueForSite(DstVD, ValueKind, S);
for (uint32_t I = 0; I < ND; I++) {
switch (ValueKind) {
case IPVK_IndirectCallTarget:
DstVD[I].Value = IndexedInstrProf::ComputeHash(
IndexedInstrProf::HashType, (const char *)DstVD[I].Value);
break;
default:
llvm_unreachable("value kind not handled !");
}
}
Record.getValueForSite(DstVD, ValueKind, S, StringToHash);
DstVD += ND;
}
}