[BOLT][NFC] Disambiguate sample as basic/IP sample #139350
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@llvm/pr-subscribers-bolt Author: Amir Ayupov (aaupov) ChangesSample is a general term covering both basic (IP) and branch (LBR) Follow-up to #137644. Test Plan: NFC Patch is 21.42 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/139350.diff 14 Files Affected:
diff --git a/bolt/include/bolt/Core/BinaryFunction.h b/bolt/include/bolt/Core/BinaryFunction.h
index a52998564ee1b..0fd199acec1e9 100644
--- a/bolt/include/bolt/Core/BinaryFunction.h
+++ b/bolt/include/bolt/Core/BinaryFunction.h
@@ -143,7 +143,7 @@ class BinaryFunction {
enum {
PF_NONE = 0, /// No profile.
PF_LBR = 1, /// Profile is based on last branch records.
- PF_SAMPLE = 2, /// Non-LBR sample-based profile.
+ PF_IP = 2, /// Non-LBR sample-based profile.
PF_MEMEVENT = 4, /// Profile has mem events.
};
@@ -387,7 +387,7 @@ class BinaryFunction {
float ProfileMatchRatio{0.0f};
/// Raw branch count for this function in the profile.
- uint64_t RawBranchCount{0};
+ uint64_t RawSampleCount{0};
/// Dynamically executed function bytes, used for density computation.
uint64_t SampleCountInBytes{0};
@@ -1882,11 +1882,11 @@ class BinaryFunction {
/// Return the raw profile information about the number of branch
/// executions corresponding to this function.
- uint64_t getRawBranchCount() const { return RawBranchCount; }
+ uint64_t getRawSampleCount() const { return RawSampleCount; }
/// Set the profile data about the number of branch executions corresponding
/// to this function.
- void setRawBranchCount(uint64_t Count) { RawBranchCount = Count; }
+ void setRawSampleCount(uint64_t Count) { RawSampleCount = Count; }
/// Return the number of dynamically executed bytes, from raw perf data.
uint64_t getSampleCountInBytes() const { return SampleCountInBytes; }
diff --git a/bolt/include/bolt/Profile/DataAggregator.h b/bolt/include/bolt/Profile/DataAggregator.h
index c4ee75e7a6da6..5eddd85ab7a4c 100644
--- a/bolt/include/bolt/Profile/DataAggregator.h
+++ b/bolt/include/bolt/Profile/DataAggregator.h
@@ -257,7 +257,8 @@ class DataAggregator : public DataReader {
/// Semantic actions - parser hooks to interpret parsed perf samples
/// Register a sample (non-LBR mode), i.e. a new hit at \p Address
- bool doSample(BinaryFunction &Func, const uint64_t Address, uint64_t Count);
+ bool doBasicSample(BinaryFunction &Func, const uint64_t Address,
+ uint64_t Count);
/// Register an intraprocedural branch \p Branch.
bool doIntraBranch(BinaryFunction &Func, uint64_t From, uint64_t To,
diff --git a/bolt/include/bolt/Profile/DataReader.h b/bolt/include/bolt/Profile/DataReader.h
index a7a0933bd4f03..b91efca085c8c 100644
--- a/bolt/include/bolt/Profile/DataReader.h
+++ b/bolt/include/bolt/Profile/DataReader.h
@@ -218,15 +218,16 @@ struct FuncMemData {
/// Similar to BranchInfo, but instead of recording from-to address (an edge),
/// it records the address of a perf event and the number of times samples hit
/// this address.
-struct SampleInfo {
+struct BasicSampleInfo {
Location Loc;
int64_t Hits;
- SampleInfo(Location Loc, int64_t Hits) : Loc(std::move(Loc)), Hits(Hits) {}
+ BasicSampleInfo(Location Loc, int64_t Hits)
+ : Loc(std::move(Loc)), Hits(Hits) {}
- bool operator==(const SampleInfo &RHS) const { return Loc == RHS.Loc; }
+ bool operator==(const BasicSampleInfo &RHS) const { return Loc == RHS.Loc; }
- bool operator<(const SampleInfo &RHS) const {
+ bool operator<(const BasicSampleInfo &RHS) const {
if (Loc < RHS.Loc)
return true;
@@ -235,18 +236,18 @@ struct SampleInfo {
void print(raw_ostream &OS) const;
- void mergeWith(const SampleInfo &SI);
+ void mergeWith(const BasicSampleInfo &SI);
};
/// Helper class to store samples recorded in the address space of a given
/// function, analogous to FuncBranchData but for samples instead of branches.
-struct FuncSampleData {
- typedef std::vector<SampleInfo> ContainerTy;
+struct FuncBasicSampleData {
+ typedef std::vector<BasicSampleInfo> ContainerTy;
StringRef Name;
ContainerTy Data;
- FuncSampleData(StringRef Name, ContainerTy Data)
+ FuncBasicSampleData(StringRef Name, ContainerTy Data)
: Name(Name), Data(std::move(Data)) {}
/// Get the number of samples recorded in [Start, End)
@@ -314,7 +315,7 @@ class DataReader : public ProfileReaderBase {
/// The last step is to infer edge counts based on BB execution count. Note
/// this is the opposite of the LBR way, where we infer BB execution count
/// based on edge counts.
- void readSampleData(BinaryFunction &BF);
+ void readBasicSampleData(BinaryFunction &BF);
/// Convert function-level branch data into instruction annotations.
void convertBranchData(BinaryFunction &BF) const;
@@ -388,7 +389,8 @@ class DataReader : public ProfileReaderBase {
/// Return mem data matching one of the names in \p FuncNames.
FuncMemData *getMemDataForNames(const std::vector<StringRef> &FuncNames);
- FuncSampleData *getFuncSampleData(const std::vector<StringRef> &FuncNames);
+ FuncBasicSampleData *
+ getFuncSampleData(const std::vector<StringRef> &FuncNames);
/// Return a vector of all FuncBranchData matching the list of names.
/// Internally use fuzzy matching to match special names like LTO-generated
@@ -431,7 +433,7 @@ class DataReader : public ProfileReaderBase {
}
using NamesToBranchesMapTy = std::map<StringRef, FuncBranchData>;
- using NamesToSamplesMapTy = std::map<StringRef, FuncSampleData>;
+ using NamesToSamplesMapTy = std::map<StringRef, FuncBasicSampleData>;
using NamesToMemEventsMapTy = std::map<StringRef, FuncMemData>;
using FuncsToBranchesMapTy =
std::unordered_map<const BinaryFunction *, FuncBranchData *>;
@@ -480,7 +482,7 @@ class DataReader : public ProfileReaderBase {
return parseLocation(EndChar, EndNl, true);
}
ErrorOr<BranchInfo> parseBranchInfo();
- ErrorOr<SampleInfo> parseSampleInfo();
+ ErrorOr<BasicSampleInfo> parseSampleInfo();
ErrorOr<MemInfo> parseMemInfo();
ErrorOr<bool> maybeParseNoLBRFlag();
ErrorOr<bool> maybeParseBATFlag();
diff --git a/bolt/include/bolt/Profile/ProfileYAMLMapping.h b/bolt/include/bolt/Profile/ProfileYAMLMapping.h
index a8c9f7a10bbb9..f45d411ee65ee 100644
--- a/bolt/include/bolt/Profile/ProfileYAMLMapping.h
+++ b/bolt/include/bolt/Profile/ProfileYAMLMapping.h
@@ -231,7 +231,7 @@ LLVM_YAML_STRONG_TYPEDEF(uint16_t, PROFILE_PF)
template <> struct ScalarBitSetTraits<PROFILE_PF> {
static void bitset(IO &io, PROFILE_PF &value) {
io.bitSetCase(value, "lbr", BinaryFunction::PF_LBR);
- io.bitSetCase(value, "sample", BinaryFunction::PF_SAMPLE);
+ io.bitSetCase(value, "sample", BinaryFunction::PF_IP);
io.bitSetCase(value, "memevent", BinaryFunction::PF_MEMEVENT);
}
};
diff --git a/bolt/lib/Core/BinaryFunction.cpp b/bolt/lib/Core/BinaryFunction.cpp
index 9773e21aa7522..c110632f4bb1b 100644
--- a/bolt/lib/Core/BinaryFunction.cpp
+++ b/bolt/lib/Core/BinaryFunction.cpp
@@ -473,7 +473,7 @@ void BinaryFunction::print(raw_ostream &OS, std::string Annotation) {
OS << "\n Image : 0x" << Twine::utohexstr(getImageAddress());
if (ExecutionCount != COUNT_NO_PROFILE) {
OS << "\n Exec Count : " << ExecutionCount;
- OS << "\n Branch Count: " << RawBranchCount;
+ OS << "\n Sample Count: " << RawSampleCount;
OS << "\n Profile Acc : " << format("%.1f%%", ProfileMatchRatio * 100.0f);
}
diff --git a/bolt/lib/Passes/BinaryPasses.cpp b/bolt/lib/Passes/BinaryPasses.cpp
index d8628c62d8654..420ffc8e01c5c 100644
--- a/bolt/lib/Passes/BinaryPasses.cpp
+++ b/bolt/lib/Passes/BinaryPasses.cpp
@@ -1445,7 +1445,7 @@ Error PrintProgramStats::runOnFunctions(BinaryContext &BC) {
if (!Function.hasProfile())
continue;
- uint64_t SampleCount = Function.getRawBranchCount();
+ uint64_t SampleCount = Function.getRawSampleCount();
TotalSampleCount += SampleCount;
if (Function.hasValidProfile()) {
diff --git a/bolt/lib/Passes/MCF.cpp b/bolt/lib/Passes/MCF.cpp
index 77dea7369140e..cd254a41ffd89 100644
--- a/bolt/lib/Passes/MCF.cpp
+++ b/bolt/lib/Passes/MCF.cpp
@@ -458,7 +458,7 @@ void EstimateEdgeCounts::runOnFunction(BinaryFunction &BF) {
Error EstimateEdgeCounts::runOnFunctions(BinaryContext &BC) {
if (llvm::none_of(llvm::make_second_range(BC.getBinaryFunctions()),
[](const BinaryFunction &BF) {
- return BF.getProfileFlags() == BinaryFunction::PF_SAMPLE;
+ return BF.getProfileFlags() == BinaryFunction::PF_IP;
}))
return Error::success();
@@ -466,7 +466,7 @@ Error EstimateEdgeCounts::runOnFunctions(BinaryContext &BC) {
runOnFunction(BF);
};
ParallelUtilities::PredicateTy SkipFunc = [&](const BinaryFunction &BF) {
- return BF.getProfileFlags() != BinaryFunction::PF_SAMPLE;
+ return BF.getProfileFlags() != BinaryFunction::PF_IP;
};
ParallelUtilities::runOnEachFunction(
diff --git a/bolt/lib/Profile/DataAggregator.cpp b/bolt/lib/Profile/DataAggregator.cpp
index dda737341a9c6..7a85297fe5f0e 100644
--- a/bolt/lib/Profile/DataAggregator.cpp
+++ b/bolt/lib/Profile/DataAggregator.cpp
@@ -571,10 +571,10 @@ void DataAggregator::processProfile(BinaryContext &BC) {
BinaryFunction &BF = BFI.second;
if (FuncBranchData *FBD = getBranchData(BF)) {
BF.markProfiled(BinaryFunction::PF_LBR);
- BF.RawBranchCount = FBD->getNumExecutedBranches();
- } else if (FuncSampleData *FSD = getFuncSampleData(BF.getNames())) {
- BF.markProfiled(BinaryFunction::PF_SAMPLE);
- BF.RawBranchCount = FSD->getSamples();
+ BF.RawSampleCount = FBD->getNumExecutedBranches();
+ } else if (FuncBasicSampleData *FSD = getFuncSampleData(BF.getNames())) {
+ BF.markProfiled(BinaryFunction::PF_IP);
+ BF.RawSampleCount = FSD->getSamples();
}
}
@@ -629,8 +629,8 @@ StringRef DataAggregator::getLocationName(const BinaryFunction &Func,
return OrigFunc->getOneName();
}
-bool DataAggregator::doSample(BinaryFunction &OrigFunc, uint64_t Address,
- uint64_t Count) {
+bool DataAggregator::doBasicSample(BinaryFunction &OrigFunc, uint64_t Address,
+ uint64_t Count) {
// To record executed bytes, use basic block size as is regardless of BAT.
uint64_t BlockSize = 0;
if (BinaryBasicBlock *BB = OrigFunc.getBasicBlockContainingOffset(
@@ -648,9 +648,9 @@ bool DataAggregator::doSample(BinaryFunction &OrigFunc, uint64_t Address,
if (I == NamesToSamples.end()) {
bool Success;
StringRef LocName = getLocationName(Func, BAT);
- std::tie(I, Success) = NamesToSamples.insert(
- std::make_pair(Func.getOneName(),
- FuncSampleData(LocName, FuncSampleData::ContainerTy())));
+ std::tie(I, Success) = NamesToSamples.insert(std::make_pair(
+ Func.getOneName(),
+ FuncBasicSampleData(LocName, FuncBasicSampleData::ContainerTy())));
}
Address -= Func.getAddress();
@@ -1663,7 +1663,7 @@ void DataAggregator::processBasicEvents() {
continue;
}
- doSample(*Func, PC, HitCount);
+ doBasicSample(*Func, PC, HitCount);
}
outs() << "PERF2BOLT: read " << NumTotalSamples << " samples\n";
@@ -2195,8 +2195,8 @@ DataAggregator::writeAggregatedFile(StringRef OutputFilename) const {
OutFile << "\n";
for (const auto &KV : NamesToSamples) {
- const FuncSampleData &FSD = KV.second;
- for (const SampleInfo &SI : FSD.Data) {
+ const FuncBasicSampleData &FSD = KV.second;
+ for (const BasicSampleInfo &SI : FSD.Data) {
writeLocation(SI.Loc);
OutFile << SI.Hits << "\n";
++BranchValues;
@@ -2269,8 +2269,8 @@ std::error_code DataAggregator::writeBATYAML(BinaryContext &BC,
for (const StringMapEntry<std::nullopt_t> &EventEntry : EventNames)
EventNamesOS << LS << EventEntry.first().str();
- BP.Header.Flags = opts::BasicAggregation ? BinaryFunction::PF_SAMPLE
- : BinaryFunction::PF_LBR;
+ BP.Header.Flags =
+ opts::BasicAggregation ? BinaryFunction::PF_IP : BinaryFunction::PF_LBR;
// Add probe inline tree nodes.
YAMLProfileWriter::InlineTreeDesc InlineTree;
diff --git a/bolt/lib/Profile/DataReader.cpp b/bolt/lib/Profile/DataReader.cpp
index 42b1557db3f02..fda62e8c073ea 100644
--- a/bolt/lib/Profile/DataReader.cpp
+++ b/bolt/lib/Profile/DataReader.cpp
@@ -103,20 +103,20 @@ uint64_t FuncBranchData::getNumExecutedBranches() const {
return ExecutedBranches;
}
-void SampleInfo::mergeWith(const SampleInfo &SI) { Hits += SI.Hits; }
+void BasicSampleInfo::mergeWith(const BasicSampleInfo &SI) { Hits += SI.Hits; }
-void SampleInfo::print(raw_ostream &OS) const {
+void BasicSampleInfo::print(raw_ostream &OS) const {
OS << Loc.IsSymbol << " " << Loc.Name << " " << Twine::utohexstr(Loc.Offset)
<< " " << Hits << "\n";
}
-uint64_t FuncSampleData::getSamples(uint64_t Start, uint64_t End) const {
+uint64_t FuncBasicSampleData::getSamples(uint64_t Start, uint64_t End) const {
assert(llvm::is_sorted(Data));
struct Compare {
- bool operator()(const SampleInfo &SI, const uint64_t Val) const {
+ bool operator()(const BasicSampleInfo &SI, const uint64_t Val) const {
return SI.Loc.Offset < Val;
}
- bool operator()(const uint64_t Val, const SampleInfo &SI) const {
+ bool operator()(const uint64_t Val, const BasicSampleInfo &SI) const {
return Val < SI.Loc.Offset;
}
};
@@ -128,21 +128,21 @@ uint64_t FuncSampleData::getSamples(uint64_t Start, uint64_t End) const {
return Result;
}
-uint64_t FuncSampleData::getSamples() const {
+uint64_t FuncBasicSampleData::getSamples() const {
uint64_t Result = 0;
- for (const SampleInfo &I : Data)
+ for (const BasicSampleInfo &I : Data)
Result += I.Hits;
return Result;
}
-void FuncSampleData::bumpCount(uint64_t Offset, uint64_t Count) {
+void FuncBasicSampleData::bumpCount(uint64_t Offset, uint64_t Count) {
auto Iter = Index.find(Offset);
if (Iter == Index.end()) {
Data.emplace_back(Location(true, Name, Offset), Count);
Index[Offset] = Data.size() - 1;
return;
}
- SampleInfo &SI = Data[Iter->second];
+ BasicSampleInfo &SI = Data[Iter->second];
SI.Hits += Count;
}
@@ -358,8 +358,8 @@ void DataReader::readProfile(BinaryFunction &BF) {
return;
if (!hasLBR()) {
- BF.ProfileFlags = BinaryFunction::PF_SAMPLE;
- readSampleData(BF);
+ BF.ProfileFlags = BinaryFunction::PF_IP;
+ readBasicSampleData(BF);
return;
}
@@ -414,12 +414,12 @@ void DataReader::matchProfileData(BinaryFunction &BF) {
FuncBranchData *FBD = getBranchData(BF);
if (FBD) {
BF.ProfileMatchRatio = evaluateProfileData(BF, *FBD);
- BF.RawBranchCount = FBD->getNumExecutedBranches();
+ BF.RawSampleCount = FBD->getNumExecutedBranches();
if (BF.ProfileMatchRatio == 1.0f) {
if (fetchProfileForOtherEntryPoints(BF)) {
BF.ProfileMatchRatio = evaluateProfileData(BF, *FBD);
BF.ExecutionCount = FBD->ExecutionCount;
- BF.RawBranchCount = FBD->getNumExecutedBranches();
+ BF.RawSampleCount = FBD->getNumExecutedBranches();
}
return;
}
@@ -561,8 +561,8 @@ float DataReader::evaluateProfileData(BinaryFunction &BF,
return MatchRatio;
}
-void DataReader::readSampleData(BinaryFunction &BF) {
- FuncSampleData *SampleDataOrErr = getFuncSampleData(BF.getNames());
+void DataReader::readBasicSampleData(BinaryFunction &BF) {
+ FuncBasicSampleData *SampleDataOrErr = getFuncSampleData(BF.getNames());
if (!SampleDataOrErr)
return;
@@ -1013,7 +1013,7 @@ ErrorOr<MemInfo> DataReader::parseMemInfo() {
return MemInfo(Offset, Addr, CountRes.get());
}
-ErrorOr<SampleInfo> DataReader::parseSampleInfo() {
+ErrorOr<BasicSampleInfo> DataReader::parseSampleInfo() {
ErrorOr<Location> Res = parseLocation(FieldSeparator);
if (std::error_code EC = Res.getError())
return EC;
@@ -1031,7 +1031,7 @@ ErrorOr<SampleInfo> DataReader::parseSampleInfo() {
return make_error_code(llvm::errc::io_error);
}
- return SampleInfo(std::move(Address), Occurrences);
+ return BasicSampleInfo(std::move(Address), Occurrences);
}
ErrorOr<bool> DataReader::maybeParseNoLBRFlag() {
@@ -1094,7 +1094,7 @@ std::error_code DataReader::parseInNoLBRMode() {
if (I == NamesToSamples.end()) {
bool Success;
std::tie(I, Success) = NamesToSamples.insert(std::make_pair(
- Name, FuncSampleData(Name, FuncSampleData::ContainerTy())));
+ Name, FuncBasicSampleData(Name, FuncBasicSampleData::ContainerTy())));
assert(Success && "unexpected result of insert");
}
@@ -1113,11 +1113,11 @@ std::error_code DataReader::parseInNoLBRMode() {
};
while (hasBranchData()) {
- ErrorOr<SampleInfo> Res = parseSampleInfo();
+ ErrorOr<BasicSampleInfo> Res = parseSampleInfo();
if (std::error_code EC = Res.getError())
return EC;
- SampleInfo SI = Res.get();
+ BasicSampleInfo SI = Res.get();
// Ignore samples not involving known locations
if (!SI.Loc.IsSymbol)
@@ -1359,7 +1359,7 @@ DataReader::getMemDataForNames(const std::vector<StringRef> &FuncNames) {
return fetchMapEntry<NamesToMemEventsMapTy>(NamesToMemEvents, FuncNames);
}
-FuncSampleData *
+FuncBasicSampleData *
DataReader::getFuncSampleData(const std::vector<StringRef> &FuncNames) {
return fetchMapEntry<NamesToSamplesMapTy>(NamesToSamples, FuncNames);
}
@@ -1403,9 +1403,9 @@ void DataReader::dump() const {
}
for (const auto &KV : NamesToSamples) {
const StringRef Name = KV.first;
- const FuncSampleData &FSD = KV.second;
+ const FuncBasicSampleData &FSD = KV.second;
Diag << Name << " samples:\n";
- for (const SampleInfo &SI : FSD.Data)
+ for (const BasicSampleInfo &SI : FSD.Data)
Diag << SI.Loc.Name << " " << SI.Loc.Offset << " " << SI.Hits << "\n";
}
diff --git a/bolt/lib/Profile/YAMLProfileReader.cpp b/bolt/lib/Profile/YAMLProfileReader.cpp
index f5636bfe3e1f1..1cdc51aa800a8 100644
--- a/bolt/lib/Profile/YAMLProfileReader.cpp
+++ b/bolt/lib/Profile/YAMLProfileReader.cpp
@@ -181,7 +181,7 @@ bool YAMLProfileReader::parseFunctionProfile(
for (const yaml::bolt::BinaryBasicBlockProfile &YamlBB : YamlBF.Blocks)
for (const yaml::bolt::SuccessorInfo &YamlSI : YamlBB.Successors)
FuncRawBranchCount += YamlSI.Count;
- BF.setRawBranchCount(FuncRawBranchCount);
+ BF.setRawSampleCount(FuncRawBranchCount);
if (BF.empty())
return true;
@@ -221,7 +221,7 @@ bool YAMLProfileReader::parseFunctionProfile(
// Basic samples profile (without LBR) does not have branches information
// and needs a special processing.
- if (YamlBP.Header.Flags & BinaryFunction::PF_SAMPLE) {
+ if (YamlBP.Header.Flags & BinaryFunction::PF_IP) {
if (!YamlBB.EventCount) {
BB.setExecutionCount(0);
continue;
@@ -338,7 +338,7 @@ bool YAMLProfileReader::parseFunctionProfile(
if (BB.getExecutionCount() == BinaryBasicBlock::COUNT_NO_PROFILE)
BB.setExecutionCount(0);
- if (YamlBP.Header.Flags & BinaryFunction::PF_SAMPLE)
+ if (YamlBP.Header.Flags & BinaryFunction::PF_IP)
BF.setExecutionCount(FunctionExecutionCount);
ProfileMatched &= !MismatchedBlocks && !MismatchedCalls && !MismatchedEdges;
diff --git a/bolt/test/X86/branch-data.test b/bolt/test/X86/branch-data.test
index 231a77307ffef..8ff2120bdf967 100644
--- a/bolt/test/X86/branch-data.test
+++ b/bolt/test/X86/branch-data.test
@@ -15,7 +15,7 @@ CHECK: Section : .text
CHECK: IsSimple : 1
CHECK: BB Count : 5
CHECK: Exec Count : 199
-CHECK: Branch Count: 7689
+CHECK: Sample Count: 7689
CHECK: }
CHECK: .LBB{{.*}}
CHECK: Exec Count : 199
diff --git a/bolt/test/X86/reader-stale-yaml-std.test b/bolt/test/X86/reader-stale-yaml-std.test
index 9abe042d0e968..a02928adc80cd 100644
--- a/bolt/test/X86/reader-stale-yaml-std.test
+++ b/bolt/test/X86/reader-stale-yaml-std.test
@@ -24,7 +24,7 @@ CHECK: Section : .text
CHECK: IsSimple : 1
CHECK: BB Count : 18
CHECK: Exec Count : 151
-CHECK: Branch Count: 552
+CHECK: Sample Count: 552
CHECK: }
## Verify block counts.
CHECK: .LBB00 (43 instructions, align : 1)
@@ -51,7 +51,7 @@ CHECK: Section : .text
CHECK: IsSimple : 1
CHECK: BB Count : 5
CHECK: Exec Count : 20
-CHECK: Branch Count: 640
+CHECK: Sample Count: 640
CHECK: }
## Verify block counts.
CHECK: .LBB01 (4 instructions, align : 1)
diff --git a/bolt/test/X86/reader-stale-yaml.test ...
[truncated]
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Sample is a general term covering both basic (IP) and branch (LBR)
profiles. Find and replace ambiguous uses of sample in a basic sample
sense.
Rename
RawBranchCountintoRawSampleCountreflecting its use forboth kinds of profile.
Follow-up to #137644.
Test Plan: NFC