[Transforms] 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, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/Scalar/Scalarizer.cpp b/llvm/lib/Transforms/Scalar/Scalarizer.cpp
index bfbe5ae..0316a14 100644
--- a/llvm/lib/Transforms/Scalar/Scalarizer.cpp
+++ b/llvm/lib/Transforms/Scalar/Scalarizer.cpp
@@ -489,11 +489,11 @@ ScalarizerVisitor::getVectorLayout(Type *Ty, Align Alignment,
   // Make sure we're dealing with a vector.
   Layout.VecTy = dyn_cast<VectorType>(Ty);
   if (!Layout.VecTy)
-    return None;
+    return std::nullopt;
   // Check that we're dealing with full-byte elements.
   Layout.ElemTy = Layout.VecTy->getElementType();
   if (!DL.typeSizeEqualsStoreSize(Layout.ElemTy))
-    return None;
+    return std::nullopt;
   Layout.VecAlign = Alignment;
   Layout.ElemSize = DL.getTypeStoreSize(Layout.ElemTy);
   return Layout;