[clang] [llvm] [Clang] C++20 Coroutines: Introduce Frontend Attribute [[clang::coro_await_elidable]] (PR #99282)

[Adrian Vogelsgesang via llvm-commits]

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@@ -825,6 +826,32 @@ ExprResult Sema::BuildOperatorCoawaitLookupExpr(Scope *S, SourceLocation Loc) {
   return CoawaitOp;
 }
 
+static bool isAttributedCoroInplaceTask(const QualType &QT) {
+  auto *Record = QT->getAsCXXRecordDecl();
+  return Record && Record->hasAttr<CoroAwaitElidableAttr>();
+}
+
+static bool isCoroInplaceCall(Expr *Operand) {
+  if (!Operand->isPRValue()) {
+    return false;
+  }
+
+  return isAttributedCoroInplaceTask(Operand->getType());
+}
+
+template <typename DesiredExpr>
+DesiredExpr *getExprWrappedByTemporary(Expr *E) {
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vogelsgesang wrote:

seems unused?

https://github.com/llvm/llvm-project/pull/99282