1 files changed, 16 insertions, 0 deletions
diff --git a/include/clang/Basic/LangOptions.h b/include/clang/Basic/LangOptions.h
index 8099eed28c5e0..5f808f04e9ae7 100644
--- a/include/clang/Basic/LangOptions.h
+++ b/include/clang/Basic/LangOptions.h
@@ -138,6 +138,12 @@ public:
     /// rather than returning the required alignment.
     Ver7,
 
+    /// Attempt to be ABI-compatible with code generated by Clang 9.0.x
+    /// (SVN r351319). This causes vectors of __int128 to be passed in memory
+    /// instead of passing in multiple scalar registers on x86_64 on Linux and
+    /// NetBSD.
+    Ver9,
+
     /// Conform to the underlying platform's C and C++ ABIs as closely
     /// as we can.
     Latest
@@ -178,6 +184,16 @@ public:
     FEA_On
   };
 
+  enum class LaxVectorConversionKind {
+    /// Permit no implicit vector bitcasts.
+    None,
+    /// Permit vector bitcasts between integer vectors with different numbers
+    /// of elements but the same total bit-width.
+    Integer,
+    /// Permit vector bitcasts between all vectors with the same total
+    /// bit-width.
+    All,
+  };
 
 public:
   /// Set of enabled sanitizers.