diff --git a/lld/COFF/Config.h b/lld/COFF/Config.h
--- a/lld/COFF/Config.h
+++ b/lld/COFF/Config.h
@@ -289,6 +289,9 @@
   bool autoImport = false;
   bool pseudoRelocs = false;
   bool stdcallFixup = false;
+
+  llvm::StringRef ltoNewPmPasses;
+  llvm::SmallVector<llvm::StringRef, 0> passPlugins;
 };
 
 extern std::unique_ptr<Configuration> config;
diff --git a/lld/COFF/Driver.cpp b/lld/COFF/Driver.cpp
--- a/lld/COFF/Driver.cpp
+++ b/lld/COFF/Driver.cpp
@@ -1919,6 +1919,9 @@
       args.hasFlag(OPT_stdcall_fixup, OPT_stdcall_fixup_no, config->mingw);
   config->warnStdcallFixup = !args.hasArg(OPT_stdcall_fixup);
 
+  config->ltoNewPmPasses = args.getLastArgValue(OPT_lto_newpm_passes);
+  config->passPlugins = args::getStrings(args, OPT_load_pass_plugins);
+
   // Don't warn about long section names, such as .debug_info, for mingw or
   // when -debug:dwarf is requested.
   if (config->mingw || config->debugDwarf)
diff --git a/lld/COFF/LTO.cpp b/lld/COFF/LTO.cpp
--- a/lld/COFF/LTO.cpp
+++ b/lld/COFF/LTO.cpp
@@ -93,6 +93,10 @@
   c.CSIRProfile = std::string(config->ltoCSProfileFile);
   c.RunCSIRInstr = config->ltoCSProfileGenerate;
   c.PGOWarnMismatch = config->ltoPGOWarnMismatch;
+  c.OptPipeline = std::string(config->ltoNewPmPasses);
+
+  for (StringRef pluginFn : config->passPlugins)
+    c.PassPlugins.push_back(std::string(pluginFn));
 
   if (config->saveTemps)
     checkError(c.addSaveTemps(std::string(config->outputFile) + ".",
diff --git a/lld/COFF/Options.td b/lld/COFF/Options.td
--- a/lld/COFF/Options.td
+++ b/lld/COFF/Options.td
@@ -282,6 +282,9 @@
 
 def vfsoverlay : P<"vfsoverlay", "Path to a vfsoverlay yaml file to optionally look for /defaultlib's in">;
 
+def lto_newpm_passes: P<"lto-newpm-passes", "Passes to run during LTO">;
+def load_pass_plugins: P<"load-pass-plugin", "Load passes from plugin library">;
+
 // Flags for debugging
 def lldmap : F<"lldmap">;
 def lldmap_file : P_priv<"lldmap">;