Add a TrailingObjects template class.

[oota-llvm.git] / include / llvm / Support / type_traits.h

diff --git a/include/llvm/Support/type_traits.h b/include/llvm/Support/type_traits.h
index 45465aea004b3b10b48473e81057d5c046c91c49..88385c3fae1e6fad3c7536627861f3a1885007c5 100644 (file)
--- a/include/llvm/Support/type_traits.h
+++ b/include/llvm/Support/type_traits.h
@@ -93,6 +93,15 @@ struct add_const_past_pointer<
 
 }
 
+// If the compiler supports detecting whether a class is final, define
+// an LLVM_IS_FINAL macro. If it cannot be defined properly, this
+// macro will be left undefined.
+#if __cplusplus >= 201402L
+#define LLVM_IS_FINAL(Ty) std::is_final<Ty>()
+#elif __has_feature(is_final) || LLVM_GNUC_PREREQ(4, 7, 0)
+#define LLVM_IS_FINAL(Ty) __is_final(Ty)
+#endif
+
 #ifdef LLVM_DEFINED_HAS_FEATURE
 #undef __has_feature
 #endif