[llvm] 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, 3 deletions

diff --git a/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp b/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
index 712dfc0..51a2503 100644
--- a/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
+++ b/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
@@ -558,7 +558,7 @@ class SegmentBuilder {
 
     // Complete any remaining active regions.
     if (!ActiveRegions.empty())
-      completeRegionsUntil(None, 0);
+      completeRegionsUntil(std::nullopt, 0);
   }
 
   /// Sort a nested sequence of regions from a single file.
@@ -684,7 +684,7 @@ static Optional<unsigned> findMainViewFileID(const FunctionRecord &Function) {
       IsNotExpandedFile[CR.ExpandedFileID] = false;
   int I = IsNotExpandedFile.find_first();
   if (I == -1)
-    return None;
+    return std::nullopt;
   return I;
 }
 
@@ -695,7 +695,7 @@ static Optional<unsigned> findMainViewFileID(StringRef SourceFile,
   Optional<unsigned> I = findMainViewFileID(Function);
   if (I && SourceFile == Function.Filenames[*I])
     return I;
-  return None;
+  return std::nullopt;
 }
 
 static bool isExpansion(const CountedRegion &R, unsigned FileID) {