[Analysis] Use std::nullopt instead of None (NFC)

This patch mechanically replaces None with std::nullopt where the
compiler would warn if None were deprecated.  The intent is to reduce
the amount of manual work required in migrating from Optional to
std::optional.

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Analysis/AliasAnalysis.cpp b/llvm/lib/Analysis/AliasAnalysis.cpp
index 4f27aca..f3faae9 100644
--- a/llvm/lib/Analysis/AliasAnalysis.cpp
+++ b/llvm/lib/Analysis/AliasAnalysis.cpp
@@ -603,7 +603,7 @@ ModRefInfo AAResults::getModRefInfo(const AtomicRMWInst *RMW,
 ModRefInfo AAResults::getModRefInfo(const Instruction *I,
                                     const Optional<MemoryLocation> &OptLoc,
                                     AAQueryInfo &AAQIP) {
-  if (OptLoc == None) {
+  if (OptLoc == std::nullopt) {
     if (const auto *Call = dyn_cast<CallBase>(I))
       return getMemoryEffects(Call, AAQIP).getModRef();
   }