1 files changed, 0 insertions, 15 deletions
diff --git a/llvm/lib/Analysis/AliasSetTracker.cpp b/llvm/lib/Analysis/AliasSetTracker.cpp
index 0a947e175d4..954b22037ed 100644
--- a/llvm/lib/Analysis/AliasSetTracker.cpp
+++ b/llvm/lib/Analysis/AliasSetTracker.cpp
@@ -413,21 +413,6 @@ void AliasSetTracker::add(MemTransferInst *MTI) {
 void AliasSetTracker::addUnknown(Instruction *Inst) {
   if (isa<DbgInfoIntrinsic>(Inst))
     return; // Ignore DbgInfo Intrinsics.
-
-  if (auto *II = dyn_cast<IntrinsicInst>(Inst)) {
-    // These intrinsics will show up as affecting memory, but they are just
-    // markers.
-    switch (II->getIntrinsicID()) {
-    default:
-      break;
-    case Intrinsic::lifetime_start:
-    case Intrinsic::lifetime_end:
-    case Intrinsic::invariant_start:
-    case Intrinsic::invariant_end:
-    case Intrinsic::assume:
-      return;
-    }
-  }
   if (!Inst->mayReadOrWriteMemory())
     return; // doesn't alias anything