diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -1351,9 +1351,13 @@
   HelpText<"Enables the global instruction selector">;
 def fexperimental_isel : Flag<["-"], "fexperimental-isel">, Group<f_clang_Group>,
   Alias<fglobal_isel>;
-defm experimental_new_pass_manager : BooleanMarshalledFFlag<"experimental-new-pass-manager", "CodeGenOpts.ExperimentalNewPassManager",
-  "static_cast<unsigned>(LLVM_ENABLE_NEW_PASS_MANAGER)", "Enables an experimental new pass manager in LLVM.",
-  "Disables an experimental new pass manager in LLVM.">, Group<f_clang_Group>, Flags<[CC1Option]>;
+defm new_pass_manager : BooleanMarshalledFFlag<"new-pass-manager", "CodeGenOpts.ExperimentalNewPassManager",
+  "static_cast<unsigned>(LLVM_ENABLE_NEW_PASS_MANAGER)", "Use the new pass manager in LLVM",
+  "Use the legacy pass manager in LLVM">, Group<f_clang_Group>, Flags<[CC1Option]>;
+def fexperimental_new_pass_manager : Flag<["-"], "fexperimental-new-pass-manager">,
+  Group<f_clang_Group>, Flags<[CC1Option]>, Alias<fnew_pass_manager>;
+def fno_experimental_new_pass_manager : Flag<["-"], "fno-experimental-new-pass-manager">,
+  Group<f_clang_Group>, Flags<[CC1Option]>, Alias<fno_new_pass_manager>;
 def fexperimental_strict_floating_point : Flag<["-"], "fexperimental-strict-floating-point">,
   Group<f_clang_Group>, Flags<[CC1Option]>,
   HelpText<"Enables experimental strict floating point in LLVM.">,
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -5835,8 +5835,8 @@
                    false))
     CmdArgs.push_back("-fmodules-debuginfo");
 
-  Args.AddLastArg(CmdArgs, options::OPT_fexperimental_new_pass_manager,
-                  options::OPT_fno_experimental_new_pass_manager);
+  Args.AddLastArg(CmdArgs, options::OPT_fnew_pass_manager,
+                  options::OPT_fno_new_pass_manager);
 
   ObjCRuntime Runtime = AddObjCRuntimeArgs(Args, Inputs, CmdArgs, rewriteKind);
   RenderObjCOptions(TC, D, RawTriple, Args, Runtime, rewriteKind != RK_None,
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -596,8 +596,8 @@
   }
 
   // Need this flag to turn on new pass manager via Gold plugin.
-  if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
-                   options::OPT_fno_experimental_new_pass_manager,
+  if (Args.hasFlag(options::OPT_fnew_pass_manager,
+                   options::OPT_fno_new_pass_manager,
                    /* Default */ LLVM_ENABLE_NEW_PASS_MANAGER)) {
     CmdArgs.push_back("-plugin-opt=new-pass-manager");
   }
diff --git a/clang/test/Driver/clang_f_opts.c b/clang/test/Driver/clang_f_opts.c
--- a/clang/test/Driver/clang_f_opts.c
+++ b/clang/test/Driver/clang_f_opts.c
@@ -469,10 +469,10 @@
 // RUN: %clang -### -fno-experimental-new-pass-manager -fexperimental-new-pass-manager %s 2>&1 | FileCheck --check-prefix=CHECK-PM --check-prefix=CHECK-NEW-PM %s
 // RUN: %clang -### -fexperimental-new-pass-manager -fno-experimental-new-pass-manager %s 2>&1 | FileCheck --check-prefix=CHECK-PM --check-prefix=CHECK-NO-NEW-PM %s
 // CHECK-PM-NOT: argument unused
-// CHECK-NEW-PM: -fexperimental-new-pass-manager
-// CHECK-NEW-PM-NOT: -fno-experimental-new-pass-manager
-// CHECK-NO-NEW-PM: -fno-experimental-new-pass-manager
-// CHECK-NO-NEW-PM-NOT: -fexperimental-new-pass-manager
+// CHECK-NEW-PM: -fnew-pass-manager
+// CHECK-NEW-PM-NOT: -fno-new-pass-manager
+// CHECK-NO-NEW-PM: -fno-new-pass-manager
+// CHECK-NO-NEW-PM-NOT: -fnew-pass-manager
 
 // RUN: %clang -### -S -fstrict-return %s 2>&1 | FileCheck -check-prefix=CHECK-STRICT-RETURN %s
 // RUN: %clang -### -S -fno-strict-return %s 2>&1 | FileCheck -check-prefix=CHECK-NO-STRICT-RETURN %s
diff --git a/clang/test/Driver/fnew-pass-manager.c b/clang/test/Driver/fnew-pass-manager.c
new file mode 100644
--- /dev/null
+++ b/clang/test/Driver/fnew-pass-manager.c
@@ -0,0 +1,26 @@
+// RUN: %clang -### -c -fno-new-pass-manager -fnew-pass-manager %s 2>&1 | FileCheck --check-prefixes=NOWARN,NEW %s
+// RUN: %clang -### -c -fnew-pass-manager -fno-new-pass-manager %s 2>&1 | FileCheck --check-prefixes=NOWARN,LEGACY %s
+
+/// -f[no-]experimental-new-pass-manager are legacy aliases when the new PM was still experimental.
+// RUN: %clang -### -c -fno-experimental-new-pass-manager -fexperimental-new-pass-manager %s 2>&1 | FileCheck --check-prefixes=NOWARN,NEW %s
+// RUN: %clang -### -c -fexperimental-new-pass-manager -fno-experimental-new-pass-manager %s 2>&1 | FileCheck --check-prefixes=NOWARN,LEGACY %s
+
+// NOWARN-NOT: warning: argument unused
+
+// NEW:        -fnew-pass-manager
+// NEW-NOT:    -fno-new-pass-manager
+
+// LEGACY:     -fno-new-pass-manager
+// LEGACY-NOT: -fnew-pass-manager
+
+/// For full/Thin LTO, -fnew-pass-manager passes -plugin-opt=new-pass-manager to the linker (which may not be LLD).
+// RUN: %clang -### -target x86_64-linux -flto -fnew-pass-manager %s 2>&1 | FileCheck --check-prefix=LTO_NEW %s
+// RUN: %clang -### -target x86_64-linux -flto=thin -fexperimental-new-pass-manager %s 2>&1 | FileCheck --check-prefix=LTO_NEW %s
+
+// LTO_NEW:    "-plugin-opt=new-pass-manager"
+
+/// TODO Add the negative option and pass it to the linker.
+// RUN: %clang -### -target x86_64-linux -flto -fno-new-pass-manager %s 2>&1 | FileCheck --check-prefix=LTO_LEGACY %s
+// RUN: %clang -### -target x86_64-linux -flto=thin -fno-experimental-new-pass-manager %s 2>&1 | FileCheck --check-prefix=LTO_LEGACY %s
+
+// LTO_LEGACY-NOT: "-plugin-opt=new-pass-manager"
diff --git a/clang/test/Driver/gold-lto-new-pass-man.c b/clang/test/Driver/gold-lto-new-pass-man.c
deleted file mode 100644
--- a/clang/test/Driver/gold-lto-new-pass-man.c
+++ /dev/null
@@ -1,7 +0,0 @@
-// RUN: touch %t.o
-//
-// RUN: %clang -target ppc64le-unknown-linux -### %t.o -flto 2>&1 \
-// RUN:     -Wl,-plugin-opt=foo -O3 \
-// RUN:     -fexperimental-new-pass-manager \
-// RUN:     | FileCheck %s
-// CHECK: "-plugin-opt=new-pass-manager"