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[IR2Vec] Adding tests to check multiple invocations of getFunctionVector() and getInstVecMap() return same results #162365

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Merged
merged 3 commits into from
Oct 7, 2025
Merged

[IR2Vec] Adding tests to check multiple invocations of getFunctionVector() and getInstVecMap() return same results #162365

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2290ff5
Reinitialize Function Vectors
svkeerthy Oct 6, 2025
1739e5c
Adding tests
svkeerthy Oct 7, 2025
a32b12d
Fix formatting issues
svkeerthy Oct 7, 2025
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2 changes: 2 additions & 0 deletions llvm/lib/Analysis/IR2Vec.cpp
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Expand Up @@ -200,6 +200,8 @@ void Embedder::computeEmbeddings() const {
if (F.isDeclaration())
return;

FuncVector = Embedding(Dimension, 0.0);

// Consider only the basic blocks that are reachable from entry
for (const BasicBlock *BB : depth_first(&F)) {
computeEmbeddings(*BB);
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54 changes: 54 additions & 0 deletions llvm/unittests/Analysis/IR2VecTest.cpp
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Expand Up @@ -430,6 +430,60 @@ TEST_F(IR2VecTestFixture, GetFunctionVector_FlowAware) {
EXPECT_TRUE(FuncVec.approximatelyEquals(Embedding(2, 58.1)));
}

TEST_F(IR2VecTestFixture, MultipleComputeEmbeddingsConsistency_Symbolic) {
auto Emb = Embedder::create(IR2VecKind::Symbolic, *F, *V);
ASSERT_TRUE(static_cast<bool>(Emb));

// Get initial function vector
const auto &FuncVec1 = Emb->getFunctionVector();

// Compute embeddings again by calling getFunctionVector multiple times
const auto &FuncVec2 = Emb->getFunctionVector();
const auto &FuncVec3 = Emb->getFunctionVector();

// All function vectors should be identical
EXPECT_TRUE(FuncVec1.approximatelyEquals(FuncVec2));
EXPECT_TRUE(FuncVec1.approximatelyEquals(FuncVec3));
EXPECT_TRUE(FuncVec2.approximatelyEquals(FuncVec3));

// Also check that instruction vectors remain consistent
const auto &InstMap1 = Emb->getInstVecMap();
const auto &InstMap2 = Emb->getInstVecMap();

EXPECT_EQ(InstMap1.size(), InstMap2.size());
for (const auto &[Inst, Vec1] : InstMap1) {
ASSERT_TRUE(InstMap2.count(Inst));
EXPECT_TRUE(Vec1.approximatelyEquals(InstMap2.at(Inst)));
}
}

TEST_F(IR2VecTestFixture, MultipleComputeEmbeddingsConsistency_FlowAware) {
auto Emb = Embedder::create(IR2VecKind::FlowAware, *F, *V);
ASSERT_TRUE(static_cast<bool>(Emb));

// Get initial function vector
const auto &FuncVec1 = Emb->getFunctionVector();

// Compute embeddings again by calling getFunctionVector multiple times
const auto &FuncVec2 = Emb->getFunctionVector();
const auto &FuncVec3 = Emb->getFunctionVector();

// All function vectors should be identical
EXPECT_TRUE(FuncVec1.approximatelyEquals(FuncVec2));
EXPECT_TRUE(FuncVec1.approximatelyEquals(FuncVec3));
EXPECT_TRUE(FuncVec2.approximatelyEquals(FuncVec3));

// Also check that instruction vectors remain consistent
const auto &InstMap1 = Emb->getInstVecMap();
const auto &InstMap2 = Emb->getInstVecMap();

EXPECT_EQ(InstMap1.size(), InstMap2.size());
for (const auto &[Inst, Vec1] : InstMap1) {
ASSERT_TRUE(InstMap2.count(Inst));
EXPECT_TRUE(Vec1.approximatelyEquals(InstMap2.at(Inst)));
}
}

static constexpr unsigned MaxOpcodes = Vocabulary::MaxOpcodes;
[[maybe_unused]]
static constexpr unsigned MaxTypeIDs = Vocabulary::MaxTypeIDs;
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