[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, 1 insertions, 1 deletions

diff --git a/llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp b/llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp
index e14a234..ed2aa55 100644
--- a/llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp
+++ b/llvm/unittests/CodeGen/AMDGPUMetadataTest.cpp
@@ -58,7 +58,7 @@ protected:
     TargetOptions Options;
     TM = std::unique_ptr<LLVMTargetMachine>(
         static_cast<LLVMTargetMachine *>(T->createTargetMachine(
-            "amdgcn--amdpal", "gfx1010", "", Options, None)));
+            "amdgcn--amdpal", "gfx1010", "", Options, std::nullopt)));
     if (!TM)
       GTEST_SKIP();