diff --git a/llvm/lib/Target/AArch64/AArch64StackTagging.cpp b/llvm/lib/Target/AArch64/AArch64StackTagging.cpp
--- a/llvm/lib/Target/AArch64/AArch64StackTagging.cpp
+++ b/llvm/lib/Target/AArch64/AArch64StackTagging.cpp
@@ -605,7 +605,7 @@
   }
 
   if (NumInterestingAllocas == 0)
-    return true;
+    return false;
 
   std::unique_ptr<DominatorTree> DeleteDT;
   DominatorTree *DT = nullptr;