[llvm-branch-commits] [llvm] [IR2Vec] Consider only reachable BBs and non-debug instructions (PR #143476)

[S. VenkataKeerthy via llvm-branch-commits]

================
@@ -218,9 +222,12 @@ void SymbolicEmbedder::computeEmbeddings(const BasicBlock 
&BB) const {
 void SymbolicEmbedder::computeEmbeddings() const {
   if (F.isDeclaration())
     return;
-  for (const auto &BB : F) {
-    computeEmbeddings(BB);
-    FuncVector += BBVecMap[&BB];
+
+  // Consider only the basic blocks that are reachable from entry
+  ReversePostOrderTraversal<const Function *> RPOT(&F);
----------------
svkeerthy wrote:

Thanks. Seems like constructing RPO is costly. Changed it to DF Traversal.

https://github.com/llvm/llvm-project/pull/143476
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