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
@@ -1397,6 +1397,8 @@
 // false negatives. The proper implementation requires cooperation with
 // the frontend.
 static bool isInterestingPointerComparison(Instruction *I) {
+  if (I->hasMetadata("nosanitize"))
+    return false;
   if (ICmpInst *Cmp = dyn_cast<ICmpInst>(I)) {
     if (!Cmp->isRelational())
       return false;
@@ -1411,6 +1413,8 @@
 // false negatives. The proper implementation requires cooperation with
 // the frontend.
 static bool isInterestingPointerSubtraction(Instruction *I) {
+  if (I->hasMetadata("nosanitize"))
+    return false;
   if (BinaryOperator *BO = dyn_cast<BinaryOperator>(I)) {
     if (BO->getOpcode() != Instruction::Sub)
       return false;