diff --git a/llvm/test/Other/opt-npm.ll b/llvm/test/Other/opt-npm.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Other/opt-npm.ll
@@ -0,0 +1,6 @@
+; RUN: opt -dce -enable-new-pm -disable-output -debug-pass-manager %s 2>&1 | FileCheck %s
+
+; CHECK: DCEPass
+define void @foo() {
+    ret void
+}
diff --git a/llvm/tools/opt/NewPMDriver.h b/llvm/tools/opt/NewPMDriver.h
--- a/llvm/tools/opt/NewPMDriver.h
+++ b/llvm/tools/opt/NewPMDriver.h
@@ -20,6 +20,8 @@
 #ifndef LLVM_TOOLS_OPT_NEWPMDRIVER_H
 #define LLVM_TOOLS_OPT_NEWPMDRIVER_H
 
+#include "llvm/ADT/ArrayRef.h"
+
 namespace llvm {
 class StringRef;
 class Module;
@@ -59,7 +61,8 @@
 bool runPassPipeline(StringRef Arg0, Module &M, TargetMachine *TM,
                      ToolOutputFile *Out, ToolOutputFile *ThinLinkOut,
                      ToolOutputFile *OptRemarkFile, StringRef PassPipeline,
-                     opt_tool::OutputKind OK, opt_tool::VerifierKind VK,
+                     ArrayRef<StringRef> PassInfos, opt_tool::OutputKind OK,
+                     opt_tool::VerifierKind VK,
                      bool ShouldPreserveAssemblyUseListOrder,
                      bool ShouldPreserveBitcodeUseListOrder,
                      bool EmitSummaryIndex, bool EmitModuleHash,
diff --git a/llvm/tools/opt/NewPMDriver.cpp b/llvm/tools/opt/NewPMDriver.cpp
--- a/llvm/tools/opt/NewPMDriver.cpp
+++ b/llvm/tools/opt/NewPMDriver.cpp
@@ -214,8 +214,8 @@
 bool llvm::runPassPipeline(StringRef Arg0, Module &M, TargetMachine *TM,
                            ToolOutputFile *Out, ToolOutputFile *ThinLTOLinkOut,
                            ToolOutputFile *OptRemarkFile,
-                           StringRef PassPipeline, OutputKind OK,
-                           VerifierKind VK,
+                           StringRef PassPipeline, ArrayRef<StringRef> Passes,
+                           OutputKind OK, VerifierKind VK,
                            bool ShouldPreserveAssemblyUseListOrder,
                            bool ShouldPreserveBitcodeUseListOrder,
                            bool EmitSummaryIndex, bool EmitModuleHash,
@@ -332,10 +332,19 @@
   if (EnableDebugify)
     MPM.addPass(NewPMDebugifyPass());
 
-  if (auto Err =
-          PB.parsePassPipeline(MPM, PassPipeline, VerifyEachPass, DebugPM)) {
-    errs() << Arg0 << ": " << toString(std::move(Err)) << "\n";
-    return false;
+  if (!PassPipeline.empty()) {
+    if (auto Err =
+            PB.parsePassPipeline(MPM, PassPipeline, VerifyEachPass, DebugPM)) {
+      errs() << Arg0 << ": " << toString(std::move(Err)) << "\n";
+      return false;
+    }
+  }
+  for (auto PassName : Passes) {
+    if (auto Err =
+            PB.parsePassPipeline(MPM, PassName, VerifyEachPass, DebugPM)) {
+      errs() << Arg0 << ": " << toString(std::move(Err)) << "\n";
+      return false;
+    }
   }
 
   if (VK > VK_NoVerifier)
diff --git a/llvm/tools/opt/opt.cpp b/llvm/tools/opt/opt.cpp
--- a/llvm/tools/opt/opt.cpp
+++ b/llvm/tools/opt/opt.cpp
@@ -71,6 +71,10 @@
 static cl::list<const PassInfo*, bool, PassNameParser>
 PassList(cl::desc("Optimizations available:"));
 
+static cl::opt<bool>
+    EnableNewPassManager("enable-new-pm",
+                         cl::desc("Enable the new pass manager"));
+
 // This flag specifies a textual description of the optimization pass pipeline
 // to run over the module. This flag switches opt to use the new pass manager
 // infrastructure, completely disabling all of the flags specific to the old
@@ -734,12 +738,16 @@
   if (OutputThinLTOBC)
     M->addModuleFlag(Module::Error, "EnableSplitLTOUnit", SplitLTOUnit);
 
-  if (PassPipeline.getNumOccurrences() > 0) {
-    if (PassList.size()) {
+  if (EnableNewPassManager || PassPipeline.getNumOccurrences() > 0) {
+    if (PassPipeline.getNumOccurrences() > 0 && PassList.size() > 0) {
       errs()
           << "Cannot specify passes via both -foo-pass and --passes=foo-pass";
       return 1;
     }
+    SmallVector<StringRef, 4> Passes;
+    for (const auto &P : PassList) {
+      Passes.push_back(P->getPassArgument());
+    }
     OutputKind OK = OK_NoOutput;
     if (!NoOutput)
       OK = OutputAssembly
@@ -756,7 +764,7 @@
     // string. Hand off the rest of the functionality to the new code for that
     // layer.
     return runPassPipeline(argv[0], *M, TM.get(), Out.get(), ThinLinkOut.get(),
-                           RemarksFile.get(), PassPipeline, OK, VK,
+                           RemarksFile.get(), PassPipeline, Passes, OK, VK,
                            PreserveAssemblyUseListOrder,
                            PreserveBitcodeUseListOrder, EmitSummaryIndex,
                            EmitModuleHash, EnableDebugify, Coroutines)