1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/include/llvm/IR/CallingConv.h b/llvm/include/llvm/IR/CallingConv.h
index c1c979c2e2ab..d0906de3ea4e 100644
--- a/llvm/include/llvm/IR/CallingConv.h
+++ b/llvm/include/llvm/IR/CallingConv.h
@@ -80,6 +80,12 @@ namespace CallingConv {
     /// be performed.
     Tail = 18,
 
+    /// Special calling convention on Windows for calling the Control
+    /// Guard Check ICall funtion. The function takes exactly one argument
+    /// (address of the target function) passed in the first argument register,
+    /// and has no return value. All register values are preserved.
+    CFGuard_Check = 19,
+
     // Target - This is the start of the target-specific calling conventions,
     // e.g. fastcall and thiscall on X86.
     FirstTargetCC = 64,