[llvm] Include <optional> instead of "llvm/ADT/Optional.h" (NFC)

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

llvm/include/llvm/ADT/STLForwardCompat.h

@@ -17,7 +17,6 @@
 #ifndef LLVM_ADT_STLFORWARDCOMPAT_H
 #define LLVM_ADT_STLFORWARDCOMPAT_H
 
-#include "llvm/ADT/Optional.h"
 #include <optional>
 #include <type_traits>
 

llvm/include/llvm/BinaryFormat/Wasm.h

@@ -15,7 +15,6 @@
 #define LLVM_BINARYFORMAT_WASM_H
 
 #include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include <optional>

llvm/include/llvm/Debuginfod/Debuginfod.h

@@ -22,7 +22,6 @@
 
 #include "HTTPServer.h"
 
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Object/BuildID.h"
@@ -34,6 +33,7 @@
 
 #include <chrono>
 #include <condition_variable>
+#include <optional>
 #include <queue>
 
 namespace llvm {

llvm/include/llvm/FuzzMutate/IRMutator.h

@@ -18,9 +18,9 @@
 #ifndef LLVM_FUZZMUTATE_IRMUTATOR_H
 #define LLVM_FUZZMUTATE_IRMUTATOR_H
 
-#include "llvm/ADT/Optional.h"
 #include "llvm/FuzzMutate/OpDescriptor.h"
 #include "llvm/Support/ErrorHandling.h"
+#include <optional>
 
 namespace llvm {
 class BasicBlock;

llvm/include/llvm/LineEditor/LineEditor.h

@@ -9,10 +9,10 @@
 #ifndef LLVM_LINEEDITOR_LINEEDITOR_H
 #define LLVM_LINEEDITOR_LINEEDITOR_H
 
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringRef.h"
 #include <cstdio>
 #include <memory>
+#include <optional>
 #include <string>
 #include <utility>
 #include <vector>

llvm/include/llvm/Support/raw_ostream.h

@@ -13,7 +13,6 @@
 #ifndef LLVM_SUPPORT_RAW_OSTREAM_H
 #define LLVM_SUPPORT_RAW_OSTREAM_H
 
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/DataTypes.h"

llvm/include/llvm/Testing/Support/SupportHelpers.h

@@ -9,7 +9,6 @@
 #ifndef LLVM_TESTING_SUPPORT_SUPPORTHELPERS_H
 #define LLVM_TESTING_SUPPORT_SUPPORTHELPERS_H
 
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/FileSystem.h"
@@ -18,6 +17,7 @@
 #include "gmock/gmock-matchers.h"
 #include "gtest/gtest-printers.h"
 
+#include <optional>
 #include <string>
 
 namespace llvm {

llvm/include/llvm/XRay/InstrumentationMap.h

@@ -14,11 +14,11 @@
 #ifndef LLVM_XRAY_INSTRUMENTATIONMAP_H
 #define LLVM_XRAY_INSTRUMENTATIONMAP_H
 
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/YAMLTraits.h"
 #include <cstdint>
+#include <optional>
 #include <unordered_map>
 #include <vector>
 

llvm/lib/FuzzMutate/IRMutator.cpp

@@ -7,7 +7,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/FuzzMutate/IRMutator.h"
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
@@ -28,6 +27,7 @@
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Transforms/Scalar/DCE.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
+#include <optional>
 
 using namespace llvm;
 

llvm/lib/Support/VirtualFileSystem.cpp

@@ -14,7 +14,6 @@
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"

llvm/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ToolDrivers/llvm-dlltool/DlltoolDriver.h"
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/Object/COFF.h"
 #include "llvm/Object/COFFImportFile.h"
@@ -22,6 +21,7 @@
 #include "llvm/Support/Host.h"
 #include "llvm/Support/Path.h"
 
+#include <optional>
 #include <vector>
 
 using namespace llvm;

llvm/lib/Transforms/Instrumentation/HWAddressSanitizer.cpp

@@ -13,7 +13,6 @@
 
 #include "llvm/Transforms/Instrumentation/HWAddressSanitizer.h"
 #include "llvm/ADT/MapVector.h"
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
@@ -56,6 +55,7 @@
 #include "llvm/Transforms/Utils/MemoryTaggingSupport.h"
 #include "llvm/Transforms/Utils/ModuleUtils.h"
 #include "llvm/Transforms/Utils/PromoteMemToReg.h"
+#include <optional>
 
 using namespace llvm;
 

llvm/unittests/IR/CFGBuilder.h

@@ -15,12 +15,12 @@
 #define LLVM_UNITTESTS_CFG_BUILDER_H
 
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Debug.h"
 
 #include <memory>
+#include <optional>
 #include <set>
 #include <tuple>
 #include <vector>

llvm/unittests/Support/TypeTraitsTest.cpp

@@ -8,13 +8,13 @@
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/FunctionExtras.h"
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/type_traits.h"
 #include "gtest/gtest.h"
+#include <optional>
 
 namespace {
 

llvm/utils/UnicodeData/UnicodeNameMappingGenerator.cpp

@@ -11,7 +11,6 @@
 // https://unicode.org/Public/15.0.0/ucd/
 //===----------------------------------------------------------------------===//
 
-#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringRef.h"
@@ -20,6 +19,7 @@
 #include <deque>
 #include <fstream>
 #include <memory>
+#include <optional>
 #include <set>
 #include <string>
 #include <unordered_map>