diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -4779,6 +4779,8 @@
 - ``f``: A 32- or 64-bit floating-point register (requires F or D extension).
 - ``r``: A 32- or 64-bit general-purpose register (depending on the platform
   ``XLEN``).
+- ``vr``: A vector register. (requires V extension).
+- ``vm``: A vector mask register. (requires V extension).
 
 Sparc: