Re-apply "[libcxx] implement <simd> ABI for Clang/GCC vector extension, constructors, copy_from and copy_to."
...with proper guarding #ifdefs for unsupported C++11.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@338318 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__config b/include/__config
index c01ac12..bba7f53 100644
--- a/include/__config
+++ b/include/__config
@@ -620,6 +620,8 @@
#define _LIBCPP_ALWAYS_INLINE __forceinline
+#define _LIBCPP_HAS_NO_VECTOR_EXTENSION
+
#elif defined(_LIBCPP_COMPILER_IBM)
#define _ALIGNAS(x) __attribute__((__aligned__(x)))
@@ -652,6 +654,8 @@
#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__))
+#define _LIBCPP_HAS_NO_VECTOR_EXTENSION
+
#endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM]
#if _LIBCPP_STD_VER >= 17
