diff --git a/clang/include/clang/Basic/CodeGenOptions.h b/clang/include/clang/Basic/CodeGenOptions.h
--- a/clang/include/clang/Basic/CodeGenOptions.h
+++ b/clang/include/clang/Basic/CodeGenOptions.h
@@ -231,6 +231,9 @@
   /// Name of the profile file to use with -fprofile-sample-use.
   std::string SampleProfileFile;
 
+  /// Name of the profile file to use as output for with -fmemory-profile.
+  std::string MemoryProfileOutput;
+
   /// Name of the profile file to use as input for -fprofile-instr-use
   std::string ProfileInstrumentUsePath;
 
diff --git a/clang/include/clang/Basic/CodeGenOptions.def b/clang/include/clang/Basic/CodeGenOptions.def
--- a/clang/include/clang/Basic/CodeGenOptions.def
+++ b/clang/include/clang/Basic/CodeGenOptions.def
@@ -151,7 +151,6 @@
                                               ///< linker.
 CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants.
 CODEGENOPT(MergeFunctions    , 1, 0) ///< Set when -fmerge-functions is enabled.
-CODEGENOPT(MemProf           , 1, 0) ///< Set when -fmemory-profile is enabled.
 CODEGENOPT(MSVolatile        , 1, 0) ///< Set when /volatile:ms is enabled.
 CODEGENOPT(NoCommon          , 1, 0) ///< Set when -fno-common or C++ is enabled.
 CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is
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
@@ -1017,6 +1017,9 @@
   Flags<[CC1Option]>;
 
 defm memory_profile : OptInFFlag<"memory-profile", "Enable", "Disable", " heap memory profiling">;
+def fmemory_profile_EQ : Joined<["-"], "fmemory-profile=">,
+    Group<f_Group>, Flags<[CC1Option]>, MetaVarName<"<directory>">,
+    HelpText<"Enable heap memory profiling and dump results into <directory>">;
 
 // Begin sanitizer flags. These should all be core options exposed in all driver
 // modes.
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -687,7 +687,7 @@
   if (LangOpts.Coroutines)
     addCoroutinePassesToExtensionPoints(PMBuilder);
 
-  if (CodeGenOpts.MemProf) {
+  if (!CodeGenOpts.MemoryProfileOutput.empty()) {
     PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
                            addMemProfilerPasses);
     PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
@@ -1421,7 +1421,7 @@
     if (CodeGenOpts.UniqueInternalLinkageNames)
       MPM.addPass(UniqueInternalLinkageNamesPass());
 
-    if (CodeGenOpts.MemProf) {
+    if (!CodeGenOpts.MemoryProfileOutput.empty()) {
       MPM.addPass(createModuleToFunctionPassAdaptor(MemProfilerPass()));
       MPM.addPass(ModuleMemProfilerPass());
     }
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -607,6 +607,13 @@
                               !LangOpts.isSignReturnAddressWithAKey());
   }
 
+  if (!CodeGenOpts.MemoryProfileOutput.empty()) {
+    llvm::LLVMContext &Ctx = TheModule.getContext();
+    getModule().addModuleFlag(
+        llvm::Module::Error, "MemProfProfileFilename",
+        llvm::MDString::get(Ctx, CodeGenOpts.MemoryProfileOutput));
+  }
+
   if (LangOpts.CUDAIsDevice && getTriple().isNVPTX()) {
     // Indicate whether __nvvm_reflect should be configured to flush denormal
     // floating point values to 0.  (This corresponds to its "__CUDA_FTZ"
diff --git a/clang/lib/Driver/SanitizerArgs.cpp b/clang/lib/Driver/SanitizerArgs.cpp
--- a/clang/lib/Driver/SanitizerArgs.cpp
+++ b/clang/lib/Driver/SanitizerArgs.cpp
@@ -868,6 +868,7 @@
                     D.CCCIsCXX();
 
   NeedsMemProfRt = Args.hasFlag(options::OPT_fmemory_profile,
+                                options::OPT_fmemory_profile_EQ,
                                 options::OPT_fno_memory_profile, false);
 
   // Finally, initialize the set of available and recoverable sanitizers.
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
@@ -4309,9 +4309,12 @@
   if (Args.getLastArg(options::OPT_save_temps_EQ))
     Args.AddLastArg(CmdArgs, options::OPT_save_temps_EQ);
 
-  if (Args.hasFlag(options::OPT_fmemory_profile,
-                   options::OPT_fno_memory_profile, false))
-    Args.AddLastArg(CmdArgs, options::OPT_fmemory_profile);
+  auto *MemProfArg = Args.getLastArg(options::OPT_fmemory_profile,
+                                     options::OPT_fmemory_profile_EQ,
+                                     options::OPT_fno_memory_profile);
+  if (MemProfArg &&
+      !MemProfArg->getOption().matches(options::OPT_fno_memory_profile))
+    MemProfArg->render(Args, CmdArgs);
 
   // Embed-bitcode option.
   // Only white-listed flags below are allowed to be embedded.
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -1038,7 +1038,15 @@
   Opts.ThinLinkBitcodeFile =
       std::string(Args.getLastArgValue(OPT_fthin_link_bitcode_EQ));
 
-  Opts.MemProf = Args.hasArg(OPT_fmemory_profile);
+  // The memory profile runtime appends the pid to make this name more unique.
+  const char *MemProfileBasename = "memprof.profraw";
+  if (Args.hasArg(OPT_fmemory_profile_EQ)) {
+    SmallString<128> Path(
+        std::string(Args.getLastArgValue(OPT_fmemory_profile_EQ)));
+    llvm::sys::path::append(Path, MemProfileBasename);
+    Opts.MemoryProfileOutput = std::string(Path);
+  } else if (Args.hasArg(OPT_fmemory_profile))
+    Opts.MemoryProfileOutput = MemProfileBasename;
 
   Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
 
diff --git a/clang/test/CodeGen/memory-profile-filename.c b/clang/test/CodeGen/memory-profile-filename.c
new file mode 100644
--- /dev/null
+++ b/clang/test/CodeGen/memory-profile-filename.c
@@ -0,0 +1,12 @@
+// Test that we get the expected module flag metadata for the memory profile
+// filename.
+// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - %s | FileCheck %s --check-prefix=NONE
+// RUN: %clang -target x86_64-linux-gnu -fmemory-profile -S -emit-llvm -o - %s | FileCheck %s --check-prefix=DEFAULTNAME
+// RUN: %clang -target x86_64-linux-gnu -fmemory-profile=/tmp -S -emit-llvm -o - %s | FileCheck %s --check-prefix=CUSTOMNAME
+int main(void) {
+  return 0;
+}
+
+// NONE-NOT: MemProfProfileFilename
+// DEFAULTNAME: !{i32 1, !"MemProfProfileFilename", !"memprof.profraw"}
+// CUSTOMNAME: !{i32 1, !"MemProfProfileFilename", !"/tmp/memprof.profraw"}
diff --git a/clang/test/Driver/fmemprof.cpp b/clang/test/Driver/fmemprof.cpp
--- a/clang/test/Driver/fmemprof.cpp
+++ b/clang/test/Driver/fmemprof.cpp
@@ -1,6 +1,10 @@
 // RUN: %clangxx -target x86_64-linux-gnu -fmemory-profile %s -### 2>&1 | FileCheck %s
+// RUN: %clangxx -target x86_64-linux-gnu -fmemory-profile=foo %s -### 2>&1 | FileCheck %s --check-prefix=DIR
 // RUN: %clangxx -target x86_64-linux-gnu -fmemory-profile -fno-memory-profile %s -### 2>&1 | FileCheck %s --check-prefix=OFF
+// RUN: %clangxx -target x86_64-linux-gnu -fmemory-profile=foo -fno-memory-profile %s -### 2>&1 | FileCheck %s --check-prefix=OFF
 // CHECK: "-cc1" {{.*}} "-fmemory-profile"
 // CHECK: ld{{.*}}libclang_rt.memprof{{.*}}libclang_rt.memprof_cxx
+// DIR: "-cc1" {{.*}} "-fmemory-profile=foo"
+// DIR: ld{{.*}}libclang_rt.memprof{{.*}}libclang_rt.memprof_cxx
 // OFF-NOT: "-fmemory-profile"
 // OFF-NOT: libclang_rt.memprof
diff --git a/compiler-rt/test/memprof/TestCases/atexit_stats.cpp b/compiler-rt/test/memprof/TestCases/atexit_stats.cpp
--- a/compiler-rt/test/memprof/TestCases/atexit_stats.cpp
+++ b/compiler-rt/test/memprof/TestCases/atexit_stats.cpp
@@ -1,8 +1,8 @@
 // Check atexit option.
 
 // RUN: %clangxx_memprof -O0 %s -o %t
-// RUN: %env_memprof_opts=atexit=1 %run %t 2>&1 | FileCheck %s
-// RUN: %env_memprof_opts=atexit=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOATEXIT
+// RUN: %env_memprof_opts=log_path=stderr:atexit=1 %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr:atexit=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOATEXIT
 
 // CHECK: MemProfiler exit stats:
 // CHECK: Stats: {{[0-9]+}}M malloced ({{[0-9]+}}M for overhead) by {{[0-9]+}} calls
diff --git a/compiler-rt/test/memprof/TestCases/dump_process_map.cpp b/compiler-rt/test/memprof/TestCases/dump_process_map.cpp
--- a/compiler-rt/test/memprof/TestCases/dump_process_map.cpp
+++ b/compiler-rt/test/memprof/TestCases/dump_process_map.cpp
@@ -1,8 +1,8 @@
 // Check print_module_map option.
 
 // RUN: %clangxx_memprof -O0 %s -o %t
-// RUN: %env_memprof_opts=print_module_map=1 %run %t 2>&1 | FileCheck %s
-// RUN: %env_memprof_opts=print_module_map=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOMAP
+// RUN: %env_memprof_opts=log_path=stderr:print_module_map=1 %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr:print_module_map=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOMAP
 
 // CHECK: Process memory map follows:
 // CHECK: dump_process_map.cpp.tmp
diff --git a/compiler-rt/test/memprof/TestCases/log_path_test.cpp b/compiler-rt/test/memprof/TestCases/log_path_test.cpp
--- a/compiler-rt/test/memprof/TestCases/log_path_test.cpp
+++ b/compiler-rt/test/memprof/TestCases/log_path_test.cpp
@@ -3,8 +3,8 @@
 //
 // RUN: %clangxx_memprof  %s -o %t
 
-// Regular run.
-// RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-GOOD --dump-input=always
+// stderr log_path
+// RUN: %env_memprof_opts=log_path=stderr %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-GOOD --dump-input=always
 
 // Good log_path.
 // RUN: rm -f %t.log.*
diff --git a/compiler-rt/test/memprof/TestCases/malloc-size-too-big.cpp b/compiler-rt/test/memprof/TestCases/malloc-size-too-big.cpp
--- a/compiler-rt/test/memprof/TestCases/malloc-size-too-big.cpp
+++ b/compiler-rt/test/memprof/TestCases/malloc-size-too-big.cpp
@@ -1,8 +1,8 @@
 // RUN: %clangxx_memprof -O0 %s -o %t
-// RUN: %env_memprof_opts=allocator_may_return_null=0 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-SUMMARY
-// RUN: %env_memprof_opts=allocator_may_return_null=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
+// RUN: %env_memprof_opts=log_path=stderr:allocator_may_return_null=0 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-SUMMARY
+// RUN: %env_memprof_opts=log_path=stderr:allocator_may_return_null=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
 // Test print_summary
-// RUN: %env_memprof_opts=allocator_may_return_null=0:print_summary=0 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOSUMMARY
+// RUN: %env_memprof_opts=log_path=stderr:allocator_may_return_null=0:print_summary=0 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOSUMMARY
 
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/compiler-rt/test/memprof/TestCases/mem_info_cache_entries.cpp b/compiler-rt/test/memprof/TestCases/mem_info_cache_entries.cpp
--- a/compiler-rt/test/memprof/TestCases/mem_info_cache_entries.cpp
+++ b/compiler-rt/test/memprof/TestCases/mem_info_cache_entries.cpp
@@ -1,6 +1,6 @@
 // Check mem_info_cache_entries option.
 
-// RUN: %clangxx_memprof -O0 %s -o %t && %env_memprof_opts=mem_info_cache_entries=15:print_mem_info_cache_miss_rate=1:print_mem_info_cache_miss_rate_details=1 %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_memprof -O0 %s -o %t && %env_memprof_opts=log_path=stderr:mem_info_cache_entries=15:print_mem_info_cache_miss_rate=1:print_mem_info_cache_miss_rate_details=1 %run %t 2>&1 | FileCheck %s
 
 // CHECK: Set 14 miss rate: 0 / {{.*}} = 0.00%
 // CHECK-NOT: Set
diff --git a/compiler-rt/test/memprof/TestCases/print_miss_rate.cpp b/compiler-rt/test/memprof/TestCases/print_miss_rate.cpp
--- a/compiler-rt/test/memprof/TestCases/print_miss_rate.cpp
+++ b/compiler-rt/test/memprof/TestCases/print_miss_rate.cpp
@@ -2,8 +2,8 @@
 // print_mem_info_cache_miss_rate_details options.
 
 // RUN: %clangxx_memprof -O0 %s -o %t
-// RUN: %env_memprof_opts=print_mem_info_cache_miss_rate=1 %run %t 2>&1 | FileCheck %s
-// RUN: %env_memprof_opts=print_mem_info_cache_miss_rate=1:print_mem_info_cache_miss_rate_details=1 %run %t 2>&1 | FileCheck %s --check-prefix=DETAILS
+// RUN: %env_memprof_opts=log_path=stderr:print_mem_info_cache_miss_rate=1 %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr:print_mem_info_cache_miss_rate=1:print_mem_info_cache_miss_rate_details=1 %run %t 2>&1 | FileCheck %s --check-prefix=DETAILS
 
 // CHECK: Overall miss rate: 0 / {{.*}} = 0.00%
 // DETAILS: Set 0 miss rate: 0 / {{.*}} = 0.00%
diff --git a/compiler-rt/test/memprof/TestCases/stress_dtls.c b/compiler-rt/test/memprof/TestCases/stress_dtls.c
--- a/compiler-rt/test/memprof/TestCases/stress_dtls.c
+++ b/compiler-rt/test/memprof/TestCases/stress_dtls.c
@@ -7,9 +7,9 @@
 // RUN: %clangxx_memprof %s -ldl -pthread -o %t
 // RUN: %run %t 0 3
 // RUN: %run %t 2 3
-// RUN: %env_memprof_opts=verbosity=2 %run %t 10 2 2>&1 | FileCheck %s
-// RUN: %env_memprof_opts=verbosity=2:intercept_tls_get_addr=1 %run %t 10 2 2>&1 | FileCheck %s
-// RUN: %env_memprof_opts=verbosity=2:intercept_tls_get_addr=0 %run %t 10 2 2>&1 | FileCheck %s --check-prefix=CHECK0
+// RUN: %env_memprof_opts=log_path=stderr:verbosity=2 %run %t 10 2 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr:verbosity=2:intercept_tls_get_addr=1 %run %t 10 2 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr:verbosity=2:intercept_tls_get_addr=0 %run %t 10 2 2>&1 | FileCheck %s --check-prefix=CHECK0
 // CHECK: __tls_get_addr
 // CHECK: Creating thread 0
 // CHECK: __tls_get_addr
diff --git a/compiler-rt/test/memprof/TestCases/test_malloc_load_store.c b/compiler-rt/test/memprof/TestCases/test_malloc_load_store.c
--- a/compiler-rt/test/memprof/TestCases/test_malloc_load_store.c
+++ b/compiler-rt/test/memprof/TestCases/test_malloc_load_store.c
@@ -3,10 +3,10 @@
 // before exit.
 
 // RUN: %clangxx_memprof -O0 %s -o %t
-// RUN: %env_memprof_opts= %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr %run %t 2>&1 | FileCheck %s
 
 // RUN: %clangxx_memprof -DFREE -O0 %s -o %t
-// RUN: %env_memprof_opts= %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr %run %t 2>&1 | FileCheck %s
 
 // This is actually:
 //  Memory allocation stack id = STACKID
diff --git a/compiler-rt/test/memprof/TestCases/test_memintrin.cpp b/compiler-rt/test/memprof/TestCases/test_memintrin.cpp
--- a/compiler-rt/test/memprof/TestCases/test_memintrin.cpp
+++ b/compiler-rt/test/memprof/TestCases/test_memintrin.cpp
@@ -1,6 +1,6 @@
 // Check profile with calls to memory intrinsics.
 
-// RUN: %clangxx_memprof -O0 %s -o %t && %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_memprof -O0 %s -o %t && %env_memprof_opts=log_path=stderr %run %t 2>&1 | FileCheck %s
 
 // This is actually:
 //  Memory allocation stack id = STACKIDP
diff --git a/compiler-rt/test/memprof/TestCases/test_new_load_store.cpp b/compiler-rt/test/memprof/TestCases/test_new_load_store.cpp
--- a/compiler-rt/test/memprof/TestCases/test_new_load_store.cpp
+++ b/compiler-rt/test/memprof/TestCases/test_new_load_store.cpp
@@ -3,14 +3,14 @@
 // before exit.
 
 // RUN: %clangxx_memprof -O0 %s -o %t
-// RUN: %env_memprof_opts= %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr %run %t 2>&1 | FileCheck %s
 
 // RUN: %clangxx_memprof -DFREE -O0 %s -o %t
-// RUN: %env_memprof_opts= %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr %run %t 2>&1 | FileCheck %s
 
 // Try again with callbacks instead of inline sequences
 // RUN: %clangxx_memprof -mllvm -memprof-use-callbacks -O0 %s -o %t
-// RUN: %env_memprof_opts= %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr %run %t 2>&1 | FileCheck %s
 
 // This is actually:
 //  Memory allocation stack id = STACKID
diff --git a/compiler-rt/test/memprof/TestCases/test_terse.cpp b/compiler-rt/test/memprof/TestCases/test_terse.cpp
--- a/compiler-rt/test/memprof/TestCases/test_terse.cpp
+++ b/compiler-rt/test/memprof/TestCases/test_terse.cpp
@@ -3,10 +3,10 @@
 // deallocated before exit.
 
 // RUN: %clangxx_memprof -O0 %s -o %t
-// RUN: %env_memprof_opts=print_terse=1 %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr:print_terse=1 %run %t 2>&1 | FileCheck %s
 
 // RUN: %clangxx_memprof -DFREE -O0 %s -o %t
-// RUN: %env_memprof_opts=print_terse=1 %run %t 2>&1 | FileCheck %s
+// RUN: %env_memprof_opts=log_path=stderr:print_terse=1 %run %t 2>&1 | FileCheck %s
 
 // CHECK: MIB:[[STACKID:[0-9]+]]/1/40.00/40/40/20.00/20/20/[[AVELIFETIME:[0-9]+]].00/[[AVELIFETIME]]/[[AVELIFETIME]]/0/0/0/0
 // CHECK: Stack for id [[STACKID]]:
diff --git a/compiler-rt/test/memprof/TestCases/unaligned_loads_and_stores.cpp b/compiler-rt/test/memprof/TestCases/unaligned_loads_and_stores.cpp
--- a/compiler-rt/test/memprof/TestCases/unaligned_loads_and_stores.cpp
+++ b/compiler-rt/test/memprof/TestCases/unaligned_loads_and_stores.cpp
@@ -1,4 +1,4 @@
-// RUN: %clangxx_memprof -O0 %s -o %t && %run %t 2>&1 | FileCheck %s
+// RUN: %clangxx_memprof -O0 %s -o %t && %env_memprof_opts=log_path=stderr %run %t 2>&1 | FileCheck %s
 
 // This is actually:
 //  Memory allocation stack id = STACKID
diff --git a/llvm/lib/Transforms/Instrumentation/MemProfiler.cpp b/llvm/lib/Transforms/Instrumentation/MemProfiler.cpp
--- a/llvm/lib/Transforms/Instrumentation/MemProfiler.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemProfiler.cpp
@@ -60,6 +60,8 @@
 constexpr char MemProfShadowMemoryDynamicAddress[] =
     "__memprof_shadow_memory_dynamic_address";
 
+constexpr char MemProfFilenameVar[] = "__memprof_profile_filename";
+
 // Command-line flags.
 
 static cl::opt<bool> ClInsertVersionCheck(
@@ -486,6 +488,26 @@
   IRB.CreateStore(ShadowValue, ShadowAddr);
 }
 
+// Create the variable for the profile file name.
+void createProfileFileNameVar(Module &M) {
+  const MDString *MemProfFilename =
+      dyn_cast_or_null<MDString>(M.getModuleFlag("MemProfProfileFilename"));
+  if (!MemProfFilename)
+    return;
+  assert(!MemProfFilename->getString().empty() &&
+         "Unexpected MemProfProfileFilename metadata with empty string");
+  Constant *ProfileNameConst = ConstantDataArray::getString(
+      M.getContext(), MemProfFilename->getString(), true);
+  GlobalVariable *ProfileNameVar = new GlobalVariable(
+      M, ProfileNameConst->getType(), /*isConstant=*/true,
+      GlobalValue::WeakAnyLinkage, ProfileNameConst, MemProfFilenameVar);
+  Triple TT(M.getTargetTriple());
+  if (TT.supportsCOMDAT()) {
+    ProfileNameVar->setLinkage(GlobalValue::ExternalLinkage);
+    ProfileNameVar->setComdat(M.getOrInsertComdat(MemProfFilenameVar));
+  }
+}
+
 bool ModuleMemProfiler::instrumentModule(Module &M) {
   // Create a module constructor.
   std::string MemProfVersion = std::to_string(LLVM_MEM_PROFILER_VERSION);
@@ -500,6 +522,8 @@
   const uint64_t Priority = getCtorAndDtorPriority(TargetTriple);
   appendToGlobalCtors(M, MemProfCtorFunction, Priority);
 
+  createProfileFileNameVar(M);
+
   return true;
 }
 
diff --git a/llvm/test/Instrumentation/HeapProfiler/filename.ll b/llvm/test/Instrumentation/HeapProfiler/filename.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Instrumentation/HeapProfiler/filename.ll
@@ -0,0 +1,15 @@
+; Test to ensure that the filename provided by clang in the module flags
+; metadata results in the expected __memprof_profile_filename insertion.
+
+; RUN: opt < %s -mtriple=x86_64-unknown-linux -memprof -memprof-module -S | FileCheck --check-prefixes=CHECK %s
+
+define i32 @main() {
+entry:
+  ret i32 0
+}
+
+!llvm.module.flags = !{!0}
+!0 = !{i32 1, !"MemProfProfileFilename", !"/tmp/memprof.profraw"}
+
+; CHECK: $__memprof_profile_filename = comdat any
+; CHECK: @__memprof_profile_filename = constant [21 x i8] c"/tmp/memprof.profraw\00", comdat