Index: test/Transforms/Util/libcalls-opt-remarks.ll
===================================================================
--- test/Transforms/Util/libcalls-opt-remarks.ll
+++ test/Transforms/Util/libcalls-opt-remarks.ll
@@ -1,8 +1,9 @@
-; RUN: opt < %s -instcombine -o /dev/null  -pass-remarks-output=%t -S -pass-remarks=instcombine \
-; RUN:     2>&1 | FileCheck %s
+; RUN: opt < %s -instcombine -o /dev/null  -pass-remarks-output=%t -S \
+; RUN:     -pass-remarks=instcombine 2>&1 | FileCheck %s
+; RUN: cat %t | FileCheck -check-prefix=YAML %s
+; RUN: opt < %s -passes='require<opt-remark-emit>,instcombine' -o /dev/null \
+; RUN:     -pass-remarks-output=%t -S -pass-remarks=instcombine 2>&1 | FileCheck %s
 ; RUN: cat %t | FileCheck -check-prefix=YAML %s
-; RUN: opt < %s -passes='require<opt-remark-emit>,instcombine' -o /dev/null -S -pass-remarks=instcombine \
-; RUN:     2>&1 | FileCheck %s
 
 ; CHECK:      remark: libcalls-opt-remarks.c:10:10: folded strlen(select) to select of constants{{$}}
 ; CHECK-NOT:  remark:
Index: tools/opt/NewPMDriver.h
===================================================================
--- tools/opt/NewPMDriver.h
+++ tools/opt/NewPMDriver.h
@@ -53,8 +53,8 @@
 /// nullptr.
 bool runPassPipeline(StringRef Arg0, Module &M, TargetMachine *TM,
                      tool_output_file *Out, tool_output_file *ThinLinkOut,
-                     StringRef PassPipeline, opt_tool::OutputKind OK,
-                     opt_tool::VerifierKind VK,
+                     tool_output_file *OptRemarkFile, StringRef PassPipeline,
+                     opt_tool::OutputKind OK, opt_tool::VerifierKind VK,
                      bool ShouldPreserveAssemblyUseListOrder,
                      bool ShouldPreserveBitcodeUseListOrder,
                      bool EmitSummaryIndex, bool EmitModuleHash);
Index: tools/opt/NewPMDriver.cpp
===================================================================
--- tools/opt/NewPMDriver.cpp
+++ tools/opt/NewPMDriver.cpp
@@ -170,6 +170,7 @@
 bool llvm::runPassPipeline(StringRef Arg0, Module &M, TargetMachine *TM,
                            tool_output_file *Out,
                            tool_output_file *ThinLTOLinkOut,
+                           tool_output_file *OptRemarkFile,
                            StringRef PassPipeline, OutputKind OK,
                            VerifierKind VK,
                            bool ShouldPreserveAssemblyUseListOrder,
@@ -266,5 +267,9 @@
     if (OK == OK_OutputThinLTOBitcode && ThinLTOLinkOut)
       ThinLTOLinkOut->keep();
   }
+
+  if (OptRemarkFile)
+    OptRemarkFile->keep();
+
   return true;
 }
Index: tools/opt/opt.cpp
===================================================================
--- tools/opt/opt.cpp
+++ tools/opt/opt.cpp
@@ -430,17 +430,17 @@
   if (PassRemarksHotnessThreshold)
     Context.setDiagnosticsHotnessThreshold(PassRemarksHotnessThreshold);
 
-  std::unique_ptr<tool_output_file> YamlFile;
+  std::unique_ptr<tool_output_file> OptRemarkFile;
   if (RemarksFilename != "") {
     std::error_code EC;
-    YamlFile = llvm::make_unique<tool_output_file>(RemarksFilename, EC,
-                                                   sys::fs::F_None);
+    OptRemarkFile = llvm::make_unique<tool_output_file>(RemarksFilename, EC,
+                                                        sys::fs::F_None);
     if (EC) {
       errs() << EC.message() << '\n';
       return 1;
     }
     Context.setDiagnosticsOutputFile(
-        llvm::make_unique<yaml::Output>(YamlFile->os()));
+        llvm::make_unique<yaml::Output>(OptRemarkFile->os()));
   }
 
   // Load the input module...
@@ -540,7 +540,8 @@
     // 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(),
-                           PassPipeline, OK, VK, PreserveAssemblyUseListOrder,
+                           OptRemarkFile.get(), PassPipeline, OK, VK,
+                           PreserveAssemblyUseListOrder,
                            PreserveBitcodeUseListOrder, EmitSummaryIndex,
                            EmitModuleHash)
                ? 0
@@ -767,8 +768,8 @@
                 "the compile-twice option\n";
       Out->os() << BOS->str();
       Out->keep();
-      if (YamlFile)
-        YamlFile->keep();
+      if (OptRemarkFile)
+        OptRemarkFile->keep();
       return 1;
     }
     Out->os() << BOS->str();
@@ -778,8 +779,8 @@
   if (!NoOutput || PrintBreakpoints)
     Out->keep();
 
-  if (YamlFile)
-    YamlFile->keep();
+  if (OptRemarkFile)
+    OptRemarkFile->keep();
 
   if (ThinLinkOut)
     ThinLinkOut->keep();