[llvm/unittests] 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, 3 insertions, 2 deletions

diff --git a/llvm/unittests/CodeGen/TargetOptionsTest.cpp b/llvm/unittests/CodeGen/TargetOptionsTest.cpp
index b3d5e75..e9d8d9a 100644
--- a/llvm/unittests/CodeGen/TargetOptionsTest.cpp
+++ b/llvm/unittests/CodeGen/TargetOptionsTest.cpp
@@ -38,8 +38,9 @@ std::unique_ptr<TargetMachine> createTargetMachine(bool EnableIPRA) {
 
   TargetOptions Options;
   Options.EnableIPRA = EnableIPRA;
-  return std::unique_ptr<TargetMachine>(T->createTargetMachine(
-      "X86", "", "", Options, None, None, CodeGenOpt::Aggressive));
+  return std::unique_ptr<TargetMachine>(
+      T->createTargetMachine("X86", "", "", Options, std::nullopt, std::nullopt,
+                             CodeGenOpt::Aggressive));
 }
 
 typedef std::function<void(bool)> TargetOptionsTest;