diff --git a/llvm/docs/AliasAnalysis.rst b/llvm/docs/AliasAnalysis.rst
index 02b749ffb918..e201333f3007 100644
--- a/llvm/docs/AliasAnalysis.rst
+++ b/llvm/docs/AliasAnalysis.rst
@@ -136,7 +136,7 @@ be overlapping in some way, but do not start at the same address.
 
 The ``MustAlias`` response may only be returned if the two memory objects are
 guaranteed to always start at exactly the same location. A ``MustAlias``
-response implies that the pointers compare equal.
+response does not imply that the pointers compare equal.
 
 The ``getModRefInfo`` methods
 -----------------------------
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index c65c9eef7762..1d0b9068d31e 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -5121,6 +5121,16 @@ Examples:
    !0 = !{!"magic ptr"}
    !1 = !{!"other ptr"}
 
+The invariant.group metadata must be dropped when replacing one pointer by
+another based on aliasing information. This is because invariant.group is tied
+to the SSA value of the pointer operand.
+
+.. code-block:: llvm
+  %v = load i8, i8* %x, !invariant.group !0
+  ; if %x mustalias %y then we can replace the above instruction with
+  %v = load i8, i8* %y
+
+
 '``type``' Metadata
 ^^^^^^^^^^^^^^^^^^^