[clang] Use std::optional instead of llvm::Optional (NFC)

This patch replaces (llvm::|)Optional< with std::optional<.  I'll post
a separate patch to remove #include "llvm/ADT/Optional.h".

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/clang/lib/Analysis/ThreadSafety.cpp b/clang/lib/Analysis/ThreadSafety.cpp
index feaca52..5333379 100644
--- a/clang/lib/Analysis/ThreadSafety.cpp
+++ b/clang/lib/Analysis/ThreadSafety.cpp
@@ -821,7 +821,7 @@ static void findBlockLocations(CFG *CFGraph,
       for (CFGBlock::const_reverse_iterator BI = CurrBlock->rbegin(),
            BE = CurrBlock->rend(); BI != BE; ++BI) {
         // FIXME: Handle other CFGElement kinds.
-        if (Optional<CFGStmt> CS = BI->getAs<CFGStmt>()) {
+        if (std::optional<CFGStmt> CS = BI->getAs<CFGStmt>()) {
           CurrBlockInfo->ExitLoc = CS->getStmt()->getBeginLoc();
           break;
         }
@@ -833,7 +833,7 @@ static void findBlockLocations(CFG *CFGraph,
       // of the first statement in the block.
       for (const auto &BI : *CurrBlock) {
         // FIXME: Handle other CFGElement kinds.
-        if (Optional<CFGStmt> CS = BI.getAs<CFGStmt>()) {
+        if (std::optional<CFGStmt> CS = BI.getAs<CFGStmt>()) {
           CurrBlockInfo->EntryLoc = CS->getStmt()->getBeginLoc();
           break;
         }
@@ -2217,7 +2217,7 @@ static bool neverReturns(const CFGBlock *B) {
     return false;
 
   CFGElement Last = B->back();
-  if (Optional<CFGStmt> S = Last.getAs<CFGStmt>()) {
+  if (std::optional<CFGStmt> S = Last.getAs<CFGStmt>()) {
     if (isa<CXXThrowExpr>(S->getStmt()))
       return true;
   }