diff --git a/llvm/include/llvm/Analysis/ValueTracking.h b/llvm/include/llvm/Analysis/ValueTracking.h
--- a/llvm/include/llvm/Analysis/ValueTracking.h
+++ b/llvm/include/llvm/Analysis/ValueTracking.h
@@ -415,8 +415,10 @@
                             const DataLayout &DL);
 
   /// Finds alloca where the value comes from.
-  AllocaInst *
-  findAllocaForValue(Value *V, DenseMap<Value *, AllocaInst *> &AllocaForValue);
+  AllocaInst *findAllocaForValue(Value *V);
+  inline const AllocaInst *findAllocaForValue(const Value *V) {
+    return findAllocaForValue(const_cast<Value *>(V));
+  }
 
   /// Return true if the only users of this pointer are lifetime markers.
   bool onlyUsedByLifetimeMarkers(const Value *V);
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -4313,9 +4313,8 @@
   return true;
 }
 
-AllocaInst *
-llvm::findAllocaForValue(Value *V,
-                         DenseMap<Value *, AllocaInst *> &AllocaForValue) {
+static AllocaInst *
+findAllocaForValue(Value *V, DenseMap<Value *, AllocaInst *> &AllocaForValue) {
   if (AllocaInst *AI = dyn_cast<AllocaInst>(V))
     return AI;
   // See if we've already calculated (or started to calculate) alloca for a
@@ -4348,6 +4347,11 @@
   return Res;
 }
 
+AllocaInst *llvm::findAllocaForValue(Value *V) {
+  DenseMap<Value *, AllocaInst *> AllocaForValue;
+  return ::findAllocaForValue(V, AllocaForValue);
+}
+
 static bool onlyUsedByLifetimeMarkersOrDroppableInstsHelper(
     const Value *V, bool AllowLifetime, bool AllowDroppable) {
   for (const User *U : V->users()) {
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
@@ -544,7 +544,6 @@
 
   MapVector<AllocaInst *, AllocaInfo> Allocas; // need stable iteration order
   SmallVector<Instruction *, 8> RetVec;
-  DenseMap<Value *, AllocaInst *> AllocaForValue;
   SmallVector<Instruction *, 4> UnrecognizedLifetimes;
 
   for (auto &BB : *F) {
@@ -566,8 +565,7 @@
       auto *II = dyn_cast<IntrinsicInst>(I);
       if (II && (II->getIntrinsicID() == Intrinsic::lifetime_start ||
                  II->getIntrinsicID() == Intrinsic::lifetime_end)) {
-        AllocaInst *AI =
-            llvm::findAllocaForValue(II->getArgOperand(1), AllocaForValue);
+        AllocaInst *AI = findAllocaForValue(II->getArgOperand(1));
         if (!AI) {
           UnrecognizedLifetimes.push_back(I);
           continue;
diff --git a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
--- a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -911,10 +911,6 @@
   AllocaInst *DynamicAllocaLayout = nullptr;
   IntrinsicInst *LocalEscapeCall = nullptr;
 
-  // Maps Value to an AllocaInst from which the Value is originated.
-  using AllocaForValueMapTy = DenseMap<Value *, AllocaInst *>;
-  AllocaForValueMapTy AllocaForValue;
-
   bool HasInlineAsm = false;
   bool HasReturnsTwiceCall = false;
 
@@ -1065,8 +1061,7 @@
         !ConstantInt::isValueValidForType(IntptrTy, SizeValue))
       return;
     // Find alloca instruction that corresponds to llvm.lifetime argument.
-    AllocaInst *AI =
-        llvm::findAllocaForValue(II.getArgOperand(1), AllocaForValue);
+    AllocaInst *AI = findAllocaForValue(II.getArgOperand(1));
     if (!AI) {
       HasUntracedLifetimeIntrinsic = true;
       return;
diff --git a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
--- a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -2693,9 +2693,7 @@
   void handleLifetimeStart(IntrinsicInst &I) {
     if (!PoisonStack)
       return;
-    DenseMap<Value *, AllocaInst *> AllocaForValue;
-    AllocaInst *AI =
-        llvm::findAllocaForValue(I.getArgOperand(1), AllocaForValue);
+    AllocaInst *AI = llvm::findAllocaForValue(I.getArgOperand(1));
     if (!AI)
       InstrumentLifetimeStart = false;
     LifetimeStartList.push_back(std::make_pair(&I, AI));