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[memprof] Add another constructor to MemProfReader #88952

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Merged
merged 1 commit into from
Apr 16, 2024
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[memprof] Add another constructor to MemProfReader #88952

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9 changes: 9 additions & 0 deletions llvm/include/llvm/ProfileData/MemProfReader.h
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,15 @@ class MemProfReader {
llvm::DenseMap<FrameId, Frame> FrameIdMap,
llvm::MapVector<GlobalValue::GUID, IndexedMemProfRecord> ProfData);

// Initialize the MemProfReader with the frame mappings, call stack mappings,
// and profile contents.
MemProfReader(
llvm::DenseMap<FrameId, Frame> FrameIdMap,
llvm::DenseMap<CallStackId, llvm::SmallVector<FrameId>> CSIdMap,
llvm::MapVector<GlobalValue::GUID, IndexedMemProfRecord> ProfData)
: IdToFrame(std::move(FrameIdMap)), CSIdToCallStack(std::move(CSIdMap)),
FunctionProfileData(std::move(ProfData)) {}

protected:
// A helper method to extract the frame from the IdToFrame map.
const Frame &idToFrame(const FrameId Id) const {
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41 changes: 41 additions & 0 deletions llvm/unittests/ProfileData/MemProfTest.cpp
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Expand Up @@ -436,6 +436,47 @@ TEST(MemProf, BaseMemProfReader) {
FrameContains("bar", 10U, 2U, false));
}

TEST(MemProf, BaseMemProfReaderWithCSIdMap) {
llvm::DenseMap<FrameId, Frame> FrameIdMap;
Frame F1(/*Hash=*/IndexedMemProfRecord::getGUID("foo"), /*LineOffset=*/20,
/*Column=*/5, /*IsInlineFrame=*/true);
Frame F2(/*Hash=*/IndexedMemProfRecord::getGUID("bar"), /*LineOffset=*/10,
/*Column=*/2, /*IsInlineFrame=*/false);
FrameIdMap.insert({F1.hash(), F1});
FrameIdMap.insert({F2.hash(), F2});

llvm::DenseMap<CallStackId, llvm::SmallVector<FrameId>> CSIdMap;
llvm::SmallVector<FrameId> CallStack = {F1.hash(), F2.hash()};
CallStackId CSId = llvm::memprof::hashCallStack(CallStack);
CSIdMap.insert({CSId, CallStack});

llvm::MapVector<llvm::GlobalValue::GUID, IndexedMemProfRecord> ProfData;
IndexedMemProfRecord FakeRecord;
MemInfoBlock Block;
Block.AllocCount = 1U, Block.TotalAccessDensity = 4,
Block.TotalLifetime = 200001;
FakeRecord.AllocSites.emplace_back(
/*CS=*/llvm::SmallVector<FrameId>(),
/*CSId=*/llvm::memprof::hashCallStack(CallStack),
/*MB=*/Block);
ProfData.insert({F1.hash(), FakeRecord});

MemProfReader Reader(FrameIdMap, CSIdMap, ProfData);

llvm::SmallVector<MemProfRecord, 1> Records;
for (const auto &KeyRecordPair : Reader) {
Records.push_back(KeyRecordPair.second);
}

ASSERT_THAT(Records, SizeIs(1));
ASSERT_THAT(Records[0].AllocSites, SizeIs(1));
ASSERT_THAT(Records[0].AllocSites[0].CallStack, SizeIs(2));
EXPECT_THAT(Records[0].AllocSites[0].CallStack[0],
FrameContains("foo", 20U, 5U, true));
EXPECT_THAT(Records[0].AllocSites[0].CallStack[1],
FrameContains("bar", 10U, 2U, false));
}

TEST(MemProf, IndexedMemProfRecordToMemProfRecord) {
// Verify that MemProfRecord can be constructed from IndexedMemProfRecord with
// CallStackIds only.
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