Index: llvm/include/llvm/IR/Intrinsics.td
===================================================================
--- llvm/include/llvm/IR/Intrinsics.td
+++ llvm/include/llvm/IR/Intrinsics.td
@@ -955,6 +955,15 @@
                                 [llvm_token_ty, llvm_i32_ty, llvm_i32_ty],
                                 [IntrReadMem, ImmArg<1>, ImmArg<2>]>;
 
+//===------------------------ Region Annotation Intrinsics ---------------===//
+// These are documented in docs/RegionAnnotation.rst
+
+// Region Annotation and Marker Intrinsics
+
+def int_region_entry : Intrinsic<[llvm_token_ty], [], []>;
+def int_region_exit : Intrinsic<[], [llvm_token_ty], []>;
+def int_region_marker : Intrinsic<[], [], []>;
+
 //===------------------------ Coroutine Intrinsics ---------------===//
 // These are documented in docs/Coroutines.rst