[NFC][IR2Vec] Reinitialize Function Vectors

[svkeerthy]

No description provided.

[llvmbot]

@llvm/pr-subscribers-mlgo

@llvm/pr-subscribers-llvm-analysis

Author: S. VenkataKeerthy (svkeerthy)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/162165.diff

1 Files Affected:

• (modified) llvm/lib/Analysis/IR2Vec.cpp (+2)

diff --git a/llvm/lib/Analysis/IR2Vec.cpp b/llvm/lib/Analysis/IR2Vec.cpp
index 295b6d33525d9..688535161d4b9 100644
--- a/llvm/lib/Analysis/IR2Vec.cpp
+++ b/llvm/lib/Analysis/IR2Vec.cpp
@@ -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);

[mtrofin]

what would happen without this (i.e. UB, or?)

[svkeerthy]

Without this, if computeEmbeddings() is called twice, the returned function vector would be 2*(actual embedding value).