[Local] Promote an utility that could be used elsewhere. NFCI.
llvm-svn: 348804
diff --git a/llvm/lib/Transforms/Scalar/Reassociate.cpp b/llvm/lib/Transforms/Scalar/Reassociate.cpp
index 61b6d7c..cb893ea 100644
--- a/llvm/lib/Transforms/Scalar/Reassociate.cpp
+++ b/llvm/lib/Transforms/Scalar/Reassociate.cpp
@@ -789,13 +789,7 @@
// Discard any debug info related to the expressions that has changed (we
// can leave debug infor related to the root, since the result of the
// expression tree should be the same even after reassociation).
- SmallVector<DbgVariableIntrinsic *, 1> DbgUsers;
- findDbgUsers(DbgUsers, ExpressionChanged);
- for (auto *DII : DbgUsers) {
- Value *Undef = UndefValue::get(ExpressionChanged->getType());
- DII->setOperand(0, MetadataAsValue::get(DII->getContext(),
- ValueAsMetadata::get(Undef)));
- }
+ replaceDbgUsesWithUndef(ExpressionChanged);
ExpressionChanged->moveBefore(I);
ExpressionChanged = cast<BinaryOperator>(*ExpressionChanged->user_begin());