diff --git a/clang/docs/ClangCommandLineReference.rst b/clang/docs/ClangCommandLineReference.rst
--- a/clang/docs/ClangCommandLineReference.rst
+++ b/clang/docs/ClangCommandLineReference.rst
@@ -907,10 +907,6 @@
 
 Inline functions which are (explicitly or implicitly) marked inline
 
-.. option:: -flegacy-pass-manager, -fno-legacy-pass-manager
-
-Use the legacy pass manager in LLVM (deprecated, to be removed in a future release)
-
 .. option:: -fno-crash-diagnostics
 
 Disable auto-generation of preprocessed source files and a script for reproduction during a clang crash
diff --git a/llvm/docs/NewPassManager.rst b/llvm/docs/NewPassManager.rst
--- a/llvm/docs/NewPassManager.rst
+++ b/llvm/docs/NewPassManager.rst
@@ -480,12 +480,9 @@
 the new PM, whereas the backend target-dependent code generation only works
 with the legacy PM.
 
-For the optimization pipeline, the new PM is the default PM. The legacy PM is
-available for the optimization pipeline by setting various compiler/linker
-flags, e.g. ``-flegacy-pass-manager`` for ``clang``.
-
-There will be efforts to deprecate and remove the legacy PM for the
-optimization pipeline in the future.
+For the optimization pipeline, the new PM is the default PM. Using the legacy PM
+for the optimization pipeline is deprecated and there are ongoing efforts to
+remove its usage.
 
 Some IR passes are considered part of the backend codegen pipeline even if
 they are LLVM IR passes (whereas all MIR passes are codegen passes). This