1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
index f5208d5..81d8537 100644
--- a/llvm/lib/Transforms/Utils/Local.cpp
+++ b/llvm/lib/Transforms/Utils/Local.cpp
@@ -3381,7 +3381,11 @@ static void combineMetadata(Instruction *K, const Instruction *J,
           K->setMetadata(Kind,
                          MDNode::getMostGenericNoaliasAddrspace(JMD, KMD));
         break;
-    }
+      case LLVMContext::MD_nosanitize:
+        // Preserve !nosanitize if both K and J have it.
+        K->setMetadata(Kind, JMD);
+        break;
+      }
   }
   // Set !invariant.group from J if J has it. If both instructions have it
   // then we will just pick it from J - even when they are different.